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Journal articles on the topic 'CHEMCAD'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 May 2022

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1

Wang, Xiao Guang, and Yue Yun Yang. "Auxiliary of ChemCAD in Chemical Engineering Design." Advanced Materials Research 347-353 (October 2011): 3750–53. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3750.

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ChemCAD was applied to the simulation of distillation, and SCDS was used as a platform. to simulate distillation of benzene rectifying, obtaining the simulation result and the impact of operating parameters were analyzed to select the appropriate distillation conditions. Providing theoretical instructions for engineering design, and optimizing operations.
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2

Nurislamov, R. M., A. Z. Abilmagzhanov, N. R. Kenzin, A. N. Nefedov, and A. K. Akurpekova. "USING THE CHEMCAD COMPLEX TO SIMULATE REFINING PROCESSES." REPORTS OF THE NAS RK 6, no. 340 (2021): 147–53. http://dx.doi.org/10.32014/2021.2518-1483.123.

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3

Поджарский, Михаил А., та Анатолий М. Нестеров. "МОДЕЛЮВАННЯ ТЕХНОЛОГІЧНОГО ПРОЦЕСУ ОКИСНЕННЯ ДІОКСИДУ СІРКИ З ВИКОРИСТАННЯМ ПРОГРАМИ CHEMCAD". Journal of Chemistry and Technologies 29, № 4 (2022): 570–79. http://dx.doi.org/10.15421/jchemtech.v29i4.244347.

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Очищення технологічних газів, насамперед продуктів нафтогазодобування, від сірковмісних сполук з перетворенням останніх на сірчану кислоту методом мокрого каталізу – один з затребуваних виробничих процесів. Мета цієї роботи – розробка способу розрахунку найбільш складного апарату даної технології – контактного апарату для окислення діоксиду сірки – з використанням програми CHEMCAD. Досліджена поведінка моделі процесу окислення SO2 у п'ятиполичному контактному апараті. Запропоновано спосіб розрахунку засобами CHEMCAD лінії оптимальних температур для окислення SO2 і показаний зроблений на його основі графічний розрахунок схеми процесу контактування. Результати цієї роботи можна використати для розробки методики розрахунку контактних апаратів для окислення SO2 в інтересах перспективного проектування.
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Mysov, Oleg, Igor Levchuk, Kseniia Fesenko, Mariia Savchenko, and Olena Gnatko. "DEVELOPMENT OF A COMPUTER MODEL FOR OBTAINING A SOLUTION OF COPPER SULFATE ADAPTED FOR SOLVING CONTROL PROBLEMS." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 299, no. 4 (2021): 59–66. http://dx.doi.org/10.31891/2307-5732-2021-299-4-59-66.

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Copper sulfate is an inorganic compound that is currently widely used in the chemical industry, medicine and agriculture. When developing systems for automated control of the process of obtaining copper sulfate, there is a need for simple, high-speed and at the same time accurate mathematical models that are used both in improving algorithms for optimal control of this process, and in developing operator interfaces and debugging control algorithms. At the same time, the development of full-fledged mathematical models of technological processes is a very laborious task that requires significant material and time costs. The subject of study in the article is a computer model of the process of obtaining a solution of copper sulfate, implemented in the software environment of the universal modeling program ChemCAD. The aim of the work is to develop in a software environment a universal modeling program ChemCAD, a computer model of the process of obtaining a solution of copper sulphate, adapted for solving problems of control and integration into modern SCADA systems. Objectives: to develop a computer model of the process of obtaining a solution of copper sulfate in the ChemCAD simulation program; explore the process using a computer model, get graphical dependencies that describe the main technological parameters of the process; perform a comparative analysis of the data obtained by calculation with the experimental data of the laboratory setup and draw a conclusion about the functionality of the developed computer model; adapt the computer model to solve the control problem and develop the principles of two-way information exchange of the computer model based on OPC technology with the modern SCADA system TRACE-MODE 6. The methods used are: computer modeling of technological processes; OPC technology; SCADA. Conclusions: the novelty of the results obtained is as follows. In the ChemCAD software environment, a computer model of the process of obtaining a solution of copper sulfate has been developed, adapted for solving control problems and integration into existing SCADA systems. The principles and structure of two-way information exchange of a computer model with external control programs based on OPC technology have been developed.
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5

Pérez Sánchez, Amaury, José G. Baltá García, Jesús R. Montalván Viart, Elizabeth Ranero González, and Eddy J. Pérez Sánchez. "Simulation of the ethylene oxide production process in ChemCAD® simulator." Revista de Ciencia y Tecnología, no. 37 (May 10, 2022): 15–31. http://dx.doi.org/10.36995/j.recyt.2022.37.002.

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Ethylene oxide is an important industrial chemical compound used as an intermediate in the production of glycols and other plastics. In the present work, the process of ethylene oxide (EO) production from the catalytic oxidation of ethylene was simulated using the ChemCAD® simulator. Heat curves were obtained for each of the shell and tube heat exchangers used, while the flow rate and composition of the most important streams involved in the production process were determined. A sensitivity study was also carried out to establish the influence of a decrease in the feed temperature of the wash water to the absorbers on the amount of EO to be obtained in the distillation column. 22,163.5 kg/h of EO is obtained from the top of the distillation column with a purity of 98.29 %. The wash water should be fed to the absorbers at a temperature of 5 ºC to maximise the amount of EO to be obtained in the distillation column.
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6

Wang, Xiao Guang, and Yue Yun Yang. "Simulation of Reactive Distillation Process with ChemCAD Software." Advanced Materials Research 347-353 (October 2011): 3706–9. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3706.

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The concepts and application of reactive distillation process were introduced, SCDS was used as a platform was applied to the simulation of reactive distillation of acetic acid and ethanol, and the usage principles and methods of simulated reaction in ChemCAD were introduced. Simulation results and experimental data agreed satisfactorily. It has certain directive significance to real production.
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7

James, C., M. Armstrong, G. Washington, and A. Biaglow. "Consistency of thermodynamic properties from CHEMCAD process simulations." Chemical Data Collections 27 (June 2020): 100371. http://dx.doi.org/10.1016/j.cdc.2020.100371.

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8

Levchuk, І., O. Mysov, and К. Fesenko. "Modeling of acetylene synthesis process in ChemCAD and features of SCADA connection using OPC technology." Computer Modeling: Analysis, Control, Optimization 8, no. 2 (2020): 34–40. http://dx.doi.org/10.32434/2521-6406-2020-8-2-34-40.

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The article examines the features of constructing mathematical models in modern universal modeling programs and their further use using OPC technology in control systems for processes of chemical technology based on SCADA systems. The objective is to study the features of information exchange using OPC technology between the universal ChemCAD simulator and the modern SCADA system TRACE-MODE 6 using the example of a mathematical model of a kinetic reactor for the synthesis of acetylene. To achieve this goal, a mathematical model of a kinetic reactor for the synthesis of acetylene based on a model of a continuous stirring reactor has been developed in the ChemCAD simulation software environment. The reactor was tuned and the parameters of material flows were experimentally selected. A study of the process of synthesis of acetylene was carried out according to a mathematical model, a graphical dependence of the yield of acetylene on temperature was obtained and its analysis was carried out, according to the results of which the temperature providing the maximum yield of acetylene was established. With the help of OPC technology, information exchange between the model and the control system of the acetylene synthesis process is carried out, which is based on the modern SCADA system TRACE-MODE 6. A graphical dependence is obtained describing the transient process of the system through the acetylene output channel when using a PID controller and perturbing with a change in the task. The analysis of the transient process revealed the absence of transport lag, which is explained by the calculated nature of the control object and is impossible for a real technological process. To solve the problem, an experiment was carried out, according to the results of which a method for emulating transport lag using the functionality of the information channels of the SCADA system was proposed. The graph of the transient process of the system through the acetylene outlet channel was obtained, which confirms the effectiveness of the proposed method of emulation of transport delay when using external calculation models in SCADA systems. Keywords: mathematical modeling, universal modeling programs, OPC, control systems, SCADA-based control, TRACE-MODE, ChemCAD.
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9

Wibowo, Agung Ari, Mufid Mufid, Asalil Mustain, Rizqy Romadhona Ginting, and Dhoni Hartanto. "Reparameterization of Binary Interaction Parameters For Gamma-Valerolactone Purification Process." Jurnal Teknik Kimia dan Lingkungan 6, no. 1 (2022): 44. http://dx.doi.org/10.33795/jtkl.v6i1.286.

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Selain produksi biodiesel, bioetanol, biometana dan biohidrogen dari sumber terbarukan, gamma-valerolactone (GVL) muncul sebagai bahan bakar terbarukan potensial lainnya yang dapat diproduksi dari biomassa. GVL menunjukkan karakteristik yang sesuai sebagai sumber energi cair berkelanjutan yang menjanjikan. Dlaam kegiatan produksi GVL murni jumlah besar pastinya melibatkan proses pemisahan/ pemurnian, salah satunya adalah distilasi. Dalam perancangan proses distilasi diperlukan data kesetimbangan Uap – Cair (VLE), dan untuk akurasi perancangan biasanya digunakakan software simulasi proses seperti ChemCAD. Dalam penelitian ini, data VLE yang tersedia akan direparamterisasi sehingga bisa digunakan sebagai parameter model thermodinamika di Software ChemCAD. Pada penelitian ini dilakukan reparemeterisasi parameter interaksi biner (BIP) model NRTL untuk data VLE komponen yang terlibat dalam produksi GVL dari literature yang tersedia. Kemudian BIP hasil reparemterisasi digunakan untuk analisis sensitivitas pada shortcut kolom distilasi. Hasil analisis sensitivitas menunjukan bahwa perubahan suhu umpan berpengaruh terhadap konvigurasi kolom, tetapi tidak pada kualitas GVL yang dihasilkan. In addition to producing biodiesel, bioethanol, biomethane, and biohydrogen from renewable sources, gamma-valerolactone (GVL) is emerging as a potential renewable fuel from biomass. As a promising long-term liquid energy source, GVL possesses the necessary characteristics. The production of pure GVL in large quantities involves a separation/purification process, one of which is distillation. In designing the distillation process, Vapor-Liquid equilibrium(VLE) data is needed, and process simulation software such as ChemCAD is usually used for design accuracy. In this study, the available VLE data will be reparameterized to be used as a thermodynamic model parameter in ChemCAD Software. The binary interaction parameter (BIP) NRTL model reparameterization for the VLE data of the components involved in the creation of GVL was carried out in this work using data from the literature. The reparameterized BIP was then applied to the distillation column shortcut for sensitivity analysis. The findings of the sensitivity study reveal that changing the feed temperature changes the column arrangement but not the quality of the GVL produced.
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10

Aker, B., J. Rarey, and A. Fricke. "Regression of custom component data and import to CHEMCAD." Chemie Ingenieur Technik 90, no. 9 (2018): 1208. http://dx.doi.org/10.1002/cite.201855167.

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11

Nugraheny, Nurhaning Ilmika, and Ade Sonya Suryandari. "STUDI PENGARUH KONSENTRASI UMPAN GLISEROL PADA PROSES PEMURNIAN TRIASETIN BERBASIS CHEMCAD." Jurnal Chemurgy 4, no. 1 (2020): 12. http://dx.doi.org/10.30872/cmg.v4i1.4076.

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Gliserol merupakan produk samping dari biodiesel yang dihasilkan dari proses transesterifikasi. Melalui reaksi esterifikasi gliserol dengan asam asetat akan membentuk triasetin. Triasetin merupakan bahan baku terbarukan serta ramah lingkungan yang dapat meningkatkan nilai oktan dan anti-knocking pada mesin mobil. Gliserol merupakan bahan baku utama yang dapat mempengaruhi kemurnian produk triasetin. Pengaruh konsetrasi umpan gliserol dalam penelitian ini bertujuan untuk meningkatkan kemurnian triasetin. Kemurnian produk triasetin minimal 99,8% di tetapkan dalam penelitian ini. Untuk mendapatkan triasetin dengan kemurnian dan jumlah yang tinggi dapat dilakukan dengan mempertimbangkan konsentrasi umpan gliserol pada simulasi ChemCAD. Simulasi dilakukan dengan mengutamakan penentuan konsentrasi gliserol pada aliran feed tank dengan melakukan trial mulai konsentrasi 90%. Hasil yang di dapatkan semakin tinggi konsentrasi gliserol akan dihasilkan jumlah produk triasetin yang semakin banyak, namun semakin tinggi konsentrasi gliserol akan di dapatkan produk triasetin dengan kemurnian rendah. Sehingga dari simulasi yang telah dilakukan konsentrasi gliserol optimum adalah 99% dan jumlah produk triasetin sebesar 2339 kg/jam dengan kemurnian 99,94%. Kata Kunci : ChemCAD, Feed Tank, Gliserol, Triasetin
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12

Rahima, Aldila Afini, and Ernia Novika Dewi. "SIMULASI PENGARUH REFLUX RATIO PADA PROSES PEMURNIAN ETIL ASETAT DENGAN DISTILASI EKSTRAKTIF MENGGUNAKAN CHEMCAD." Jurnal Chemurgy 4, no. 1 (2020): 6. http://dx.doi.org/10.30872/cmg.v4i1.4071.

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Kebutuhan etil asetat di Indonesia semakin meningkat dari tahun ke tahun. Etil asetat di industri banyak dimanfaatkan sebagai pelarut dan bahan aditif untuk meningkatkan bilangan oktan pada bensin. Pemisahan campuran terner etil asetat/etanol/air tidak dapat dilakukan dengan distilasi konvensional karena adanya titik azeotrop. Salah satu cara yang bisa dilakukan adalah menggunakan distilasi ekstraktif. Distilasi ekstraktif merupakan proses pemisahan campuran yang terkendala titik azeotrop dengan menambahkan zat ketiga yang bersifat non-volatile dan biasanya disebut sebagai solvent atau entrainer. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh reflux ratio terhadap proses pemurnian etil asetat untuk mendapatkan etil asetat dengan kemurnian tertinggi. Simulasi dilakukan pada kolom distilasi ekstraktif dengan software CHEMCAD dan menggunakan model termodinamika NRTL. Hasil simulasi terbaik diperoleh pada reflux ratio 2,0 dengan kemurnian etil asetat 98% mol pada suhu 77oC dengan laju alir mol etil asetat sebesar 85,09 kmol/jam. Kata Kunci : CHEMCAD, distilasi ekstraktif, etil asetat, reflux ratio
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13

Wyczesany, Andrzej. "Use of ChemCad simulator for the modeling of isopropanol dehydration by heterogeneous azeotropic distillation Zastosowanie symulatora ChemCad do modelowania odwadniania izopropanolu poprzez destylację heteroazeotropową." PRZEMYSŁ CHEMICZNY 1, no. 10 (2016): 116–20. http://dx.doi.org/10.15199/62.2016.10.24.

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14

Pérez Sánchez, Amaury, Eddy Javier Pérez Sánchez, and Rutdali María Segura Silva. "Simulation of the styrene production process via catalytic dehydrogenation of ethylbenzene using CHEMCAD® process simulator." Tecnura 21, no. 53 (2017): 15–31. http://dx.doi.org/10.14483/22487638.11499.

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Background: Process simulation has been extensively used in recent years to design, evaluate or optimize processes, systems and specific operations of the chemical industry and its related disciplines. Currently, CHEMCAD® constitute one of the most used process simulators because of the great number of chemical and petrochemical processes that can be simulated.Method: The simulation of the production process of styrene via catalytic dehydrogenation of ethyl-benzene is carried out by using the process simulator CHEMCAD® version 5.2.0, in order to determine the composition and mass flow-rate of each process involved in the production, as well as the main operating parameters of the equipment used. Two sensitivity studies were carried out: firstly, the influence of the temperature and pressure values applied at the LLV Separator on the amounts of ethyl-benzene and styrene to be obtained by the intermediate and top currents of this equipment; secondly, the influence of the operating pressure of the Distillation Column No. 1 (benzene-toluene column) on the quantity of ethyl-benzene and styrene obtained at the bottom stream. The simulating software MATLAB® version 7.8.0 was used to process the results obtained.Results: Around 9234.436 kg/h of styrene is obtained in the last distillation column with 99.6% purity. Additionally, it was found that the water is the main impurity found on this stream, which represents 0.35% of the weight.Conclusions: The LLV Separator must operate at a low temperature (5 – 10 ºC) and at a relatively high pressure (10 bar), whereas the Distillation Column No. 1 must work at a pressure near atmospheric (1.0 bar), or preferably under vacuum conditions in order to obtain the highest yields of styrene and ethyl-benzene.
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Pérez Sánchez, Amaury, Elizabeth Ranero González, Eddy J. Pérez Sánchez, and Norlem Liaño Abascal. "Simulación del proceso de producción del cumeno mediante el simulador ChemCAD." Revista de Ciencia y Tecnología, no. 33 (June 25, 2020): 38–46. http://dx.doi.org/10.36995/j.recyt.2020.33.006.

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En el presente trabajo se realizó la simulación del proceso de producción del cumeno a partir de la alquilación del benceno con propileno mediante el simulador ChemCAD® versión 5.2.0. Se obtuvieron las curvas de calor de cada uno de los intercambiadores de calor de tubo y coraza utilizados, mientras que se calculó la composición y caudal de cada una de las corrientes involucradas en el proceso. También se efectuó un estudio de sensibilidad con el fin de conocer la influencia de la presión de operación del tanque flash sobre la cantidad de cumeno a obtener por la corriente del fondo de este equipo. Se obtienen 13 403,54 kg/h de cumeno por el tope de la segunda columna de destilación (columna de cumeno), con una pureza del 98,6%, siendo el benceno (1,2%) la principal impureza encontrada en esta corriente. El tanque flash deberá operar a una presión de 7 atm para obtener el mayor rendimiento de cumeno en este equipo.
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Wyczesany, Andrzej. "Zastosowanie symulatora ChemCAD do modelowania osuszania n-butanolu poprzez destylację heteroazeotropową." Nafta-Gaz 72, no. 10 (2016): 863–71. http://dx.doi.org/10.18668/ng.2016.10.12.

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Krzywda, Roman. "Zastosowanie pakietu programów CHEMCAD do projektowania i optymalizacji instalacji oczyszczania etanolu." PRZEMYSŁ CHEMICZNY 1, no. 3 (2020): 88–93. http://dx.doi.org/10.15199/62.2020.3.9.

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18

Kökdemir, Bugay, and Nil Acaralı. "A novel study on CHEMCAD simulation of isopropyl alcohol dehydrogenation process development." Journal of the Indian Chemical Society 98, no. 3 (2021): 100035. http://dx.doi.org/10.1016/j.jics.2021.100035.

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Wyczesany, Andrzej. "Simulation of N-Propanol Dehydration Process Via Heterogeneous Azeotropic Distillation Using the NRTL Equation." Chemical and Process Engineering 38, no. 1 (2017): 163–75. http://dx.doi.org/10.1515/cpe-2017-0013.

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Abstract Numerical values of the NRTL equation parameters for calculation of the vapour - liquid - liquid equilibria (VLLE) at atmospheric pressures have been presented for 5 ternary mixtures. These values were fitted to the experimental VLLE and vapour - liquid equilibrium (VLE) data to describe simultaneously, as accurately as possible, the VLE and the liquid - liquid equilibria (LLE). The coefficients of this model called further NRTL-VLL were used for simulations of n-propanol dehydration via heterogeneous azeotropic distillation. The calculations performed by a ChemCAD simulator were done for 4 mixtures using hydrocarbons, ether and ester as an entrainer. In majority simulations the top streams of the azeotropic column had composition and temperature similar to the corresponding experimental values of ternary azeotropes. The agreement between the concentrations of both liquid phases formed in a decanter and the experimental values of the LLE was good for all four simulations. The energy requirements were the most advantageous for the simulation with di-npropyl ether (DNPE) and isooctane. Simulations were performed also for one mixture using the NRTL equation coefficients taken from the ChemCAD database. In that case the compositions of the liquid organic phases leaving the decanter differed significantly from the experimental LLE data.
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Hastuti, Endiah Puji, Muhammad Subekti, Sukmanto Dibyo, and M. Darwis Isnaini. "OPTIMASI DESAIN TERMOHIDROLIKA TERAS DAN SISTEM PENDINGIN REAKTOR RISET INOVATIF DAYA TINGGI." JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 17, no. 3 (2015): 127. http://dx.doi.org/10.17146/tdm.2015.17.3.2327.

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ABSTRAK OPTIMASI DESAIN TERMOHIDROLIKA TERAS DAN SISTEM PENDINGIN REAKTOR RISET INOVATIF DAYA TINGGI. Implementasi reaktor inovasi telah diterapkan pada berbagai reaktor riset baru yang saat ini sedang dibangun. Pada saat ini BATAN sedang merancang desain konseptual reaktor riset daya tinggi yang telah masuk pada tahap optimasi desain. Spesifikasi desain konseptual reaktor riset inovatif adalah reaktor tipe kolam berpendingin air dan reflektor D2O. Teras reaktor memiliki kisi 5x5 dengan 16 bahan bakar dan 4 batang kendali. Teras reaktor berada di dalam tabung berisi D2O yang berfungsi sebagai posisi iradiasi. Daya reaktor 50 MW didesain untuk membangkitkan fluks neutron termal sebesar 5x1014 n/cm2s. Teras reaktor berbentuk kompak dan menggunakan bahan bakar U9Mo-Al dengan tingkat muat uranium 7-9 gU/cm3. Desain termohidrolika yang mencakup pemodelan, perhitungan dan analisis kecukupan pendingin dibuat sinergi dengan desain fisika teras agar keselamatan reaktor terjamin. Makalah ini bertujuan menyampaikan hasil analisis perhitungan termohidrolika teras dan sistem reaktor riset inovatif pada kondisi tunak. Analisis dilakukan menggunakan program perhitungan yang telah tervalidasi, masing-masing adalah Caudvap, PARET-ANL, Fluent dan ChemCad 6.4.1. Hasil perhitungan menunjukkan bahwa pembangkitan panas yang tinggi dapat dipindahkan tanpa menyebabkan pendidihan dengan menerapkan desain teras reaktor bertekanan, di samping itu desain awal komponen utama sistem pembuangan panas yang terintegrasi telah dilakukan, sehingga konseptual desain termohidrolika RRI-50 dapat diselesaikan. Kata kunci : reaktor riset inovatif, Caudvap, PARET-ANL, Fluent, ChemCad 6.4.1. ABSTRACT THERMALHYDRAULIC DESIGN AND COOLING SYSTEM OPTIMIZATION OF THE HIGH POWER INOVATIVE RESEARCH REACTOR. Reactor innovation has been implemented in a variety of new research reactors that currently are being built. At this time BATAN is designing a conceptual design of the high power research reactor which has entered the stage of design optimization. The conceptual design specifications of the innovative research reactor is a pool type reactor, water-cooled and reflected by D2O. The reactor core has a 5 x 5 grid with 16 fuels and 4 control rods, which is inserted into a tube containing D2O as an irradiation position. Reactor power of 50 MW is designed to generate thermal neutron flux of 5x1014 n/cm2s. The compact core reactor is using U9Mo-Al fuel with uranium loading of 7-9 gU/cm3. Thermal hydraulic design includes modeling, calculation and analysis of the adequacy of coolant created synergy with the physical design of reactor safety. This paper aims to deliver the results of thermal hydraulic calculation and system design analysis at steady state condition. The analysis was done using various calculation programs that have been validated, i.e. Caudvap, PARET-ANL, Fluent and ChemCad 6.4.1. The calculation results show that the heat generation can be transfered without causing a two phase flow boiling by applying pressurized reactor core design, while the main components of initial design system with an integrated heat dissipation has been done, to complete the conceptual design of the RRI-50 thermalhydraulics. Keywords : inovative research reactor, Caudvap, PARET-ANL, Fluent, ChemCad 6.4.1.
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Міщенко, С. О., І. М. Глікіна та М. А. Глікін. "Створення технологічної схеми процесу отримання етилену з біоетанолу в умовах аерозольного нанокаталізу за допомогою програми ChemCad". ВІСНИК СХІДНОУКРАЇНСЬКОГО НАЦІОНАЛЬНОГО УНІВЕРСИТЕТУ імені Володимира Даля, № 2 (266) (13 березня 2021): 85–89. http://dx.doi.org/10.33216/1998-7927-2021-266-2-85-89.

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Дана робота дає можливість розглянути можливість теоретичних розрахунків на моделі хімічного перетворення етилового спирту в етилен за допомогою програмного комплексу ChemCad. Були розглянуті різні концентрації вихідної сировини з метою отримання цільового продукту від параметрів реакції: температура, тиск, концентрація.
 Робота є розширенням можливості застосування нової перспективної технології аерозольного нанокаталізу. Технологія добре зарекомендувала себе як в процесах глибокого окислення, які знаходять застосування в екологічному напрямку при знешкодженні різних відходів, так і деяких процесах синтезу, наприклад синтез Фішера-Тропша (отримання вуглеводнів з синтез-газу).
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CLAUS, MICHAEL J., and KRIS A. BERGLUND. "DEFINING STILL PARAMETERS USING CHEMCAD BATCH DISTILLATION MODEL FOR MODELING FRUIT SPIRITS DISTILLATIONS." Journal of Food Process Engineering 32, no. 6 (2009): 881–92. http://dx.doi.org/10.1111/j.1745-4530.2008.00251.x.

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23

Pérez Sánchez, Amaury, Elizabeth Ranero González, and Eddy Javier Pérez Sánchez. "Simulación del proceso de producción de anhídrido maleico mediante el simulador ChemCAD®." Revista Mutis 11, no. 2 (2021): 8–21. http://dx.doi.org/10.21789/22561498.1752.

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El anhídrido maleico es una un producto químico con un amplio rango de aplicaciones como compuesto intermedio en la producción de resinas, polímeros, barnices y pinturas. En el siguiente trabajo se llevó a cabo la simulación del proceso de producción del anhídrido maleico a partir de la oxidación catalítica de benceno mediante el simulador ChemCADâ, versión 5.2.0, con el fin de realizar los balances de masa de todas las corrientes de proceso, determinar el consumo de los servicios auxiliares en los intercambiadores de calor y conocer los parámetros de diseño más importantes del equipamiento empleado. Se llevaron a cabo dos estudios de sensibilidad: influencia de la temperatura y presión de operación del absorbedor sobre la cantidad a obtener de anhídrido maleico por la corriente del fondo de este equipo. Se obtienen 5.027,14 kg/h de anhídrido maleico por la corriente del tope de la columna de destilación con una pureza del 97,45 %. El absorbedor debe operar a una temperatura cercana a 20 ºC y una presión de 5 bar para reducir las pérdidas de anhídrido maleico e incrementar las ganancias económicas del proceso
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24

Otte, Daniel, Hilke-Marie Lorenz, and Jens-Uwe Repke. "A toolbox using the stochastic optimization algorithm MIPT and ChemCAD for the systematic process retrofit of complex chemical processes." Computers & Chemical Engineering 84 (January 2016): 371–81. http://dx.doi.org/10.1016/j.compchemeng.2015.08.023.

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25

Irianto, Ignatius Djoko, Sukmanto Dibyo, Sriyono Sriyono, Djati H. Salimy, Rahayu Kusumastuti, and Marliyadi Pancoko. "PERFORMANCE ANALYSIS OF RDE ENERGY CONVERSION SYSTEM IN VARIOUS REACTOR POWER CONDITION." JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 21, no. 3 (2019): 99. http://dx.doi.org/10.17146/tdm.2019.21.3.5570.

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Reaktor Daya Eksperimental (RDE) is an experimental power reactor based on High Temperature Gas-cooled Reactor (HTGR) technology with thermal power of 10 MW. As an experimental power reactor, RDE is designed for electricity generation and provides thermal energy for experimental purposes. RDE energy conversion system is designed with cogeneration configuration in the Rankine cycle. To ensure the effectiveness of its cogeneration, the outlet temperature of the RDE is set at 700°C and steam generator outlet temperature is around 530°C. Analysis of the performance of the energy conversion system in various power levels is needed to determine the RDE operating conditions. This research is aimed to study the performance characteristics of RDE energy conversion systems in various reactor power conditions. The analysis was carried out by simulating thermodynamic parameter calculations on the RDE energy conversion system and the overall cooling system using the ChemCad program package. The simulation is carried out by increasing the reactor power from 0 MW to 10 MW at constant pressure and constant mass flow rate. The simulation results show that the steam fraction at the steam generator outlet increases starting from 3 MW reactor power and reaches saturated steam after the thermal power level of 7.5 MW. From the results, it can be concluded that with constant mass flow rate and operating pressure, optimal turbine power is obtained after the reactor thermal power reached 7.5 MW.Keywords: RDE, Energy Conversion System, Performance, Reactor Power, ChemCad
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Benanti, Enzo, Cesare Freda, Vincenzo Lorefice, Giacobbe Braccio, and Vinod Sharma. "Simulation of olive pits pyrolysis in a rotary kiln plant." Thermal Science 15, no. 1 (2011): 145–58. http://dx.doi.org/10.2298/tsci090901073b.

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This work deals with the simulation of an olive pits fed rotary kiln pyrolysis plant installed in Southern Italy. The pyrolysis process was simulated by commercial software CHEMCAD. The main component of the plant, the pyrolyzer, was modelled by a Plug Flow Reactor in accordance to the kinetic laws. Products distribution and the temperature profile was calculated along reactor's axis. Simulation results have been found to fit well the experimental data of pyrolysis. Moreover, sensitivity analyses were executed to investigate the effect of biomass moisture on the pyrolysis process.
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Ligeris, Nikolas, and Kalala Jalama. "Energy Requirement Estimates for Two Step Ethanolysis of Waste Vegetable Oils for Biodiesel Production." Applied Mechanics and Materials 492 (January 2014): 356–60. http://dx.doi.org/10.4028/www.scientific.net/amm.492.356.

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ChemCad 6.4 simulation package was used to model a two-step biodiesel production process from waste vegetable oils (WVO) and ethanol using homogeneous acid and alkali catalysts respectively. The developed process flowsheet consisted of pre-esterification and transesterification of WVO, ethanol and glycerol recovery, and biodiesel refining. The energy required for each processing unit as well as the energy required for the whole process have been estimated. Ethanol recovery accounted for the highest portion of the energy required for the entire process estimated as 2.75 MJ per kg of biodiesel produced.
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Kihlman, Jonas, and Christer Gustavsson. "The feasibility of utilizing existing process streams in kraft pulp mills as a source of chemicals for lignin extraction." BioResources 16, no. 1 (2020): 1009–28. http://dx.doi.org/10.15376/biores.16.1.1009-1028.

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Lignin is a sustainable raw material with a high potential for use in the production of renewable products. While the market for lignin is slowly growing, lignin recovery via acid precipitation during the kraft pulping process requires the addition of chemicals that will impact the chemical balance of the pulp mill. This negatively affects both the environmental and business operations. Utilizing existing process streams as a source of chemicals will allow the mill to close the chemical loop and reduce emissions, which will have positive environmental impacts. This study investigated the internal production of sulphuric acid (H2SO4) and carbon dioxide (CO2) for use in lignin separation (also called extraction) at a Swedish kraft pulp mill. The process simulation tool CHEMCAD was used to model and analyze the wet gas H2SO4 (WSA) process to produce H2SO4. The chemical absorption process using monoethanolamine (MEA) to capturing CO2 was also analyzed. The utilization of the sulphur-containing gases to produce H2SO4 can generate an amount that corresponds to a significant lignin extraction rate. The CO2 available in the flue gases from a mill well exceeds the amount required for lignin extraction.
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Giwa, Abdulwahab, and Saidat Olanipekun Giwa. "Steady-State Modelling and Simulation of a Reactive Distillation Process for n-Butyl Acetate Production Using CHEMCAD." International Journal of Engineering Research in Africa 29 (March 2017): 70–80. http://dx.doi.org/10.4028/www.scientific.net/jera.29.70.

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This work has been carried out to demonstrate the application of a process simulator known as CHEMCAD to the modelling and the simulation of a reactive distillation process used for the production of n-butyl acetate, with water as the by-product, from the esterification reaction between acetic acid and n-butanol. The esterification reaction, which is generally an equilibrium type, was modelled as two kinetic reaction types in the reaction section of the column used, which had 17 stages with the middle section (stages 6 – 12) being the reaction section. A reflux ratio of 3 and reboiler duty of 78 kJ/min as well as 30 mL/min of each of the reactants with 99% molar purity were used for the simulation of the column. The results obtained revealed that the developed model was a valid one because there was a very good agreement between the results and the theoretical knowledge of a distillation column based on the fact that the desired (which was the heavy) product (n-butyl acetate) was found to have the highest mole fraction in the bottom section of the column while the by-product of the process (water) was discovered to have a mole fraction higher than that of n-butyl acetate in the top (condenser) section of the column. Therefore, CHEMCAD has been applied to the steady-state simulation of the reactive distillation process used for the production of n-butyl acetate from the esterification reaction of acetic acid and n-butanol successfully.
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Giwa, Abdulwahab, and Saidat Olanipekun Giwa. "Dynamic Simulation of a Reactive Distillation Process for n-Butyl Acetate Production Using CHEMCAD." International Journal of Engineering Research in Africa 30 (May 2017): 154–66. http://dx.doi.org/10.4028/www.scientific.net/jera.30.154.

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The dynamic simulation of a reactive distillation process developed with the aid of CHEMCAD for the production of n-butyl acetate has been carried out in this research work. Originally, the by-product of the process was water. The developed model of the system was first simulated for steady state using a reflux ratio of 3 and a reboiler duty of 1.4 kW in order to have initial values for the mole fractions of the components involved. The model was converted to a dynamic type by activating the “Dynamics” in the “Convergence” tab of the “Run” menu of CHEMCAD. The dynamic model of the system was run using different (positive and negative) step changes applied to the input variables, which were reflux ratio and reboiler duty, of the process. The results obtained from the steady-state simulation showed that only n-butyl acetate and unconverted acetic acid were existing in the reboiler section of the column initially. The dynamic simulation of the process showed that the system was a stable one because it could get settled after some running time of its dynamic model for all the step changes in the two input variables considered. It was also discovered from the simulations carried out that the dynamic responses of the system to negative step changes in reflux ratio were smoother than those obtained when positive step changes were applied to the same input variable. Moreover, the applications of negative step changes to the reboiler duty resulted in decreases in the mole fractions of n-butyl acetate present in the bottom section of the column while the applications of positive changes to the same reboiler duty gave rise to increases in the mole fraction values of the desired product that was collected through the reboiler section of the column. It was discovered from the results obtained that the higher the reboiler duty of the system that was applied in the production of n-butyl acetate from the esterification reaction involving acetic acid and n-butanol, the faster the system was approaching its dynamic steady state.
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Gartman, T. N., F. S. Sovetin, and D. K. Novikova. "Experience in the application of the CHEMCAD program to the modeling of reactor processes." Theoretical Foundations of Chemical Engineering 43, no. 6 (2009): 944–54. http://dx.doi.org/10.1134/s0040579509060128.

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32

Левчук, Ігор Леонідович, Олег Петрович Мисов, Ксенія Олексіївна Фесенко та Антон Романович Шейкус. "МОДЕЛЮВАННЯ ХІМІКО-ТЕХНОЛОГІЧНИХ ПРОЦЕСІВ У SCADA ЗА ДОПОМОГОЮ ТЕХНОЛОГІЇ OPEN PLATFORM COMMUNICATIONS". RADIOELECTRONIC AND COMPUTER SYSTEMS, № 2 (26 квітня 2020): 59–66. http://dx.doi.org/10.32620/reks.2020.2.05.

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The subject of study in the article are methods for integrating mathematical models of chemical-technological processes implemented in universal modeling programs into modern SCADA systems for developing and improving methods for controlling these processes. The goal is to develop a control system for the synthesis of acetylene in a kinetic reactor, based on a computer model created in universal modeling programs and integrated into SCADA using open platform communications (OPC) technology. Tasks: to create a mathematical model of the process of synthesis of acetylene based on the selected universal modeling program; to develop a way to integrate the resulting model into modern SCADA using OPC technology; to develop in SCADA a control system for the process of synthesis of acetylene according to a mathematical model as part of a functional human-machine interface and control subsystem algorithms; get transient graphs and prove the efficiency of the control system. Conduct a process study using a mathematical model. The methods used are computer simulation of technological processes; OPC technology; SCADA based management. The following results are obtained. A control system for the acetylene synthesis process based on SCADA Trace-Mode and a mathematical model implemented in the ChemCAD package has been developed, while the model - control system information exchange is implemented based on OPC technology. Checked and proved the efficiency of the resulting control system. A mathematical study of the process was carried out, an experimental dependence of the yield of the final product, acetylene, on the temperature, and consumption of raw materials at the inlet of the reactor was established. Conclusions. The novelty of the results is as follows. A new method is proposed for integrating mathematical models implemented in the ChemCAD modeling package into modern SCADA, based on OPC technology. A study of the process of acetylene synthesis by a mathematical model was carried out, experimental dependences of the acetylene yield on temperature and ethylene consumption at the inlet of the synthesis reactor were obtained. An analysis of the obtained experimental dependences showed the need to use cascade control algorithms to increase the efficiency of controlling the process of acetylene synthesis in a kinetic reactor.
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Dibyo, Sukmanto, Endiah Puji Hastuti, and Ign Djoko Irianto. "ANALISIS DESAIN PROSES SISTEM PENDINGIN PADA REAKTOR RISET INOVATIF 50 MW." JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 17, no. 1 (2015): 19. http://dx.doi.org/10.17146/tdm.2015.17.1.2235.

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Reaktor Riset Inovatif (RRI) merupakan jenis MTR (Material Testing Reactor) yang dipersiapkan ke depan sebagai desain reaktor baru. Daya RRI telah ditetapkan dari perhitungan neutronik dan termohidrolika teras yaitu 50 MW termal. Reaktor bertekanan 8 kgf/cm2 dan laju aliran massa pendingin primer 900 kg/s. Tantangan yang penting dalam menindak lanjuti desain reaktor ini adalah analisis desain pada sistem pendingin. Makalah ini bertujuan untuk menganalisis desain proses sistem pendingin utama reaktor RRI daya 50 MW (RRI-50) dengan menggunakan program Chemcad 6.1.4. Dalam analisis ini dilakukan perhitungan neraca massa dan energi (mass/energy balances) pada sistem pendingin primer dan sekunder sebagai pendingin utama. Masing-masing sistem pendingin tersebut terdiri dari 2 jalur beroperasi secara paralel dan 1 jalur redundansi. Disamping itu untuk desain termal unit komponen telah dianalisis dengan program RELAP5, frenchcreek dan Metoda Analitik. Hasil analisis yang diperoleh adalah desain diagram sistem pendingin yang mencakup data parameter entalpi, temperatur, tekanan dan laju aliran massa pendingin untuk masing-masing jalur. Adapun hasil desain unit komponen utama pada RRI-50 adalah tangki tunda dengan volume 51,5 m3, 2 unit pompa sentrifugal dan 1 unit pompa cadangan pada pendingin primer daya 141 kW/pompa dan pendingin sekunder daya 206 kW/pompa, 2 unit penukar panas tipe shell-tube dengan koefisien termal overall 1377 W/m2.oC dan 4 unit menara pendingin yang mampu melepaskan panas ke udara dengan desain temperatur approach 5,0 oC dan temperatur range 9,0 oC. Desain sistem pendingin reaktor RRI-50 ini telah menetapkan parameter operasi sistem pendingin yaitu temperatur, tekanan dan laju aliran massa pendingin dengan mempertimbangkan tuntutan aspek keselamatan teras reaktor sehingga desain temperatur maksimum pendingin masuk ke teras 44,5 oC. Kata kunci : RRI 50 MW, desain sistem pendingin, program Chemcad 6.1.4 Innovative Research Reactor RRI is a type of MTR (Material Testing Reactor), which is being prepared in the future as a design of new reactor. The power of RRI has been determined based on the core thermalhydraulic and neutronic calculation, which is 50 MWt. The reactor pressure is 8 kgf/cm 2 and coolant mass flow rate is 900 kg/s. The important challenge in the follow up of this reactor design is the design analysis of cooling system. The purpose of this study is to analyze the design of RRI reactor main coolant system at the power of 50 MWt (RRI-50) using ChemCAD 6.1.4. In this analysis the mass and energy balances at the primary and secondary cooling system are calculated as main coolant. Each of the cooling system consists of two lines operating in parallel and redundancy lines. Besides that, the thermal design of the component units have been analyzed using RELAP5, FrenchCreek and Analytical Methods. The analyses result obtained is a design of cooling system diagram which includes parameter of enthalpy, temperature, pressure and coolant mass flow rate of each line. Meanwhile, design result of main component unit are delay tank of 51.5 m3 volume, 2 unit centrifugal pumps and 1 unit stand-by pump for the primary coolant pump each of 141 kW power and secondary coolant pump each of 206 kW power, 2 unit of shell-tube heat exchanger with overall thermal coefficient of 1377 W/m2.oC and 4 unit cooling tower that capable to release the heat to the air at approach temperature of 5,0 oC and range temperature of 9,0 oC. design of reactor coolant system RRI-50 has decided the operating parameters of cooling system are temperature, pressure and mass flow rate by considering into the demands of the safety aspects of the reactor core therefore design of maximum coolant temperature to the reactor core is 44,5 oC. Keywords : RRI 50MW, design of cooling system, program Chemcad 6.1.4.
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Wibowo, Agung Ari, Cucuk Evi Lusiani, Rizqy Romadhona Ginting, and Dhoni Hartanto. "Simulasi CHEMCAD: Studi Kasus Distilasi Ekstraktif pada Campuran Terner n-Propil Asetat/n-Propanol/Air." Jurnal Teknik Kimia dan Lingkungan 2, no. 2 (2018): 75. http://dx.doi.org/10.33795/jtkl.v2i2.75.

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Pemisahan n-propil asetat dari campuran terner n-propil asetat/n-propanol/air merupakan salah satu proses yang tidak dapat dilakukan dengan distilasi sederhana. Adanya azeotrop terner minimum dari campuran tersebut menyebabkan n-propil asetat hanya dapat dipisahkan dari campuran n-propanol dan air salah satunya dengan metode distilasi ekstraktif. Distilasi ekstraktif merupakan proses vaporisasi parsial dengan menambahkan suatu agen pemisah non-volatil yang disebut sebagai sovent atau agen ekstraktif. Solvent yang digunakan dalam simulasi proses ini adalah campuran DMSO (Dimetil Sulfoksida) dan Gliserol dengan komposisi 50 % massa dengan perbandingan 1:2 untuk massa umpan kolom : solvent. Feed yang digunakan adalah n-propanol (10 kmol/jam) dan asam asetat (13 kmol/jam) masing-masing pada suhu 25°C dan tekanan 101,3 kPa. Hasil n-propil asetat terbaik diperoleh saat solvent diumpankan pada stage 5 dengan fraksi mol n-propil asetat pada distilat 0,9975 disertai dengan minimumnya energi reboiler yang digunakan pada konfigurasi kolom ini.n-Propyl acetate separation of the n-propyl acetate /n-propanol/water mixture composition can't be done by simple distillation. The existence of minimum ternary azeotrope on the mixture causes n-propyl acetate can be separated only by extractive distillation method. Extractive distillation is a partial vaporization process in the presence of a non-volatile separating agent called as solvent or extractive agent. Solvent used in the simulation process is DMSO (Dimethyl Sulfoxide)-Glycerol mixture (50% mass) with a ratio of 1: 2 for column feed : solvent. n-Propanol (10 kmol/hour) and acetic acid (13 kmol/hour) are fed into reactor (before extractive distillation process) at 25°C and 101.3 kPa, respectively. The best results of n-propyl acetate were obtained when the solvent was fed to stage 5 in which mole fraction of n-propyl acetate in distillate 0.9975 accompanied by the minimum reboiler energy used in this column configuration.
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Markova, D., K. Valters, and G. Bažbauers. "Optimization of Ethanol Autothermal Reforming Process with Chemical Equilibrium Calculations." Scientific Journal of Riga Technical University. Environmental and Climate Technologies 3, no. 3 (2009): 79–85. http://dx.doi.org/10.2478/v10145-009-0011-x.

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Optimization of Ethanol Autothermal Reforming Process with Chemical Equilibrium Calculations The dependence of carbon formation, hydrogen yield and efficiency of the ethanol autothermal reforming process on critical process factors is studied in the work by using chemical equilibrium calculations with a process simulation model made in the ChemCAD environment. The studied process factors are carbon-to-steam ratio S/C, air-to-fuel ratio λ and temperature in the reactor TATR. Since the goal of the reforming process is to achieve possibly higher values of H2 concentration in the reforming gas, by operating reformer at the maximum efficiency at the same time, the optimization of the reforming process was done by using objective functions which include hydrogen yield and the amount of heat supplied to the process. As a result it was found that the maximum process efficiency, which is defined as the ratio of obtained hydrogen energy to the energy supplied to the process in the studied range of process factors is 0,61, and this value can be achieved at λ value of 0,1, S/C values of 2,5-3 and temperatures in the reactor TATR 680 - 695°C. Hydrogen yield under these conditions is 4,41-4,55 mol/molC2H5OH.
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Naletov, V. A., M. B. Glebov, and A. Yu Naletov. "Efficiency of Working Fluids for Rankine Cycle in Energy-Saving Gas Transport Systems." Oil and Gas Technologies 136, no. 5 (2021): 37–41. http://dx.doi.org/10.32935/1815-2600-2021-136-5-37-41.

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In this paper, the application of various non-ozone-depleting low-boiling working fluids for the Rankine cycle is analyzed based on exergy efficiency. The Rankine cycle is used for high-efficiency waste heat recovery from flue gases generated in gas transport systems at natural gas compressor stations. The system was modelled based on calculations using the CHEMCAD software in conjunction with the “Energy unit” module compatible with the main program interface, which was used for assessing system energy efficiency. It was concluded that the neopentane Rankine cycle with a regenerator is more efficient. Preliminary economic analysis has shown that the proposed system has an acceptable payback period (up to 6 years).
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Sriyono, Sriyono, Atiqah M. Hilda, and Mia Kamayani. "Pemodelan dan Simulasi Proses Adsorpsi Gas Pengotor oleh Molecular Sieve pada Pendingin Rde dengan Software Chemcad." Prosiding Seminar Nasional Teknoka 3 (January 11, 2019): 69. http://dx.doi.org/10.22236/teknoka.v3i0.2918.

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The purity of RDE10 helium coolant should be maintained from various impurities gas due to water/air ingress that reacts with the reflector graphite (C). These impurities are CH4, CO, CO2, H2O, H2, O2, and N2 which can initiate oxidation corrosion or carburization-decarburization so the concentration should be maintain to be a minimum. The helium coolant is purified by Helium Purification System (HPS). One of the stages in HPS is adsorption by Molecular Sieve mainly for CO2 and H2O molecules. This paper discusses the influence of pressure, known as pressure swing adsorption (PSA) on the adsorption ability of the Molecular Sieve aims to determine the most effective pressure that will be operated on Molecular Sieve column. Molecular Sieve is modeled with CHEMCAD computer code in two columns, one column for the adsorption process, and the other for the regeneration (desorption). Adsorption methods used in the analysis is the Langmuir method. Models that have been developed simulated by providing input: total flow rate of 10.5 kg/hour, 30 °C, porosity 0.7, bed height 2 m, pore diameter 5 A, and the amount of O2 and N2 impurities respective each 1 g/s. The pressure varies between 5 to 50 bars, and the Molecular Sieve adsorption capability is analyzed. Simulation results show that with the increase in pressure of 5 to 50 bar, indicating an increase in Molecular Sieve absorption capacity to CO2 is 15.90% and to H2O is 15.80%. In the SPH design, the input stream to the Molecular Sieve must be compressed until 50 bar to obtain high absorption capability of the CO2 and H2O.
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38

Fogarasi, Szabolcs, Árpád Imre-Lucaci, and Florica Imre-Lucaci. "Dismantling of Waste Printed Circuit Boards with the Simultaneous Recovery of Copper: Experimental Study and Process Modeling." Materials 14, no. 18 (2021): 5186. http://dx.doi.org/10.3390/ma14185186.

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The study was carried out with the aim to demonstrate the applicability of a combined chemical–electrochemical process for the dismantling of waste printed circuit boards (WPCBs) created from different types of electronic equipment. The concept implies a simple and less polluting process that allows the chemical dismantling of WPCBs with the simultaneous recovery of copper from the leaching solution and the regeneration of the leaching agent. In order to assess the performance of the dismantling process, various tests were performed on different types of WPCBs using the 0.3 M FeCl3 in 0.5 M HCl leaching system. The experimental results show that, through the leaching process, the electronic components (EC) together with other fractions can be efficiently dismounted from the surface of WPCBs, with the parallel electrowinning of copper from the copper rich leaching solution. In addition, the process was scaled up for the dismantling of 100 kg/h WPCBs and modeled and simulated using process flow modelling software ChemCAD in order to assess the impact of all steps and equipment on the technical and environmental performance of the overall process. According to the results, the dismantling of 1 kg of WPCBs requires a total energy of 0.48 kWh, and the process can be performed with an overall low environmental impact based on the obtained general environmental indexes (GEIs) values.
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Huzova, I. "Using ChemCad software for simulation of the process of distillation of benzene raffinate to prepare petroleum solvents." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 6 (November 2019): 60–68. http://dx.doi.org/10.32434/0321-4095-2019-127-6-60-68.

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Pérez Sánchez, Amaury, Eddy Javier Pérez Sánchez, and Rutdali María Segura Silva. "Simulation of the acrylic acid production process through catalytic oxidation of gaseous propylene using ChemCAD ® simulator." Ingeniare. Revista chilena de ingeniería 27, no. 1 (2019): 142–50. http://dx.doi.org/10.4067/s0718-33052019000100142.

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Swain, Ranjita, Rudra Narayan Mohapatro, Sunita Routray, and Ranjan R. Pradhan. "Design with Simulation on the Separation of Ethanol from Water and Ethanol Azeotropic Mixture Using Chemcad Software." Advanced Science Letters 22, no. 2 (2016): 551–54. http://dx.doi.org/10.1166/asl.2016.6860.

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42

Kızıltaş, Hakan. "The Energy and Exergy Analysis of the Reactor Unit of Boric Acid Production Process with ChemCAD Simulation." Brilliant Engineering 3, no. 2 (2022): 1–6. http://dx.doi.org/10.36937/ben.2022.4617.

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Energy and exergy analysis of systems are of great importance to enhance the energy and exergy efficiency of industrial production facilities. With the energy and exergy analyses performed, the energy dependency of the production facilities and their energy consumption can be reduced, the price of the product can decrease, and the profit margin can increase. Additionally, it is ensured that the energy produced based on fossil fuels is used in a controlled way. In the present study, the analysis of energy and exergy has been performed for the production reactor unit of the Boric Acid from Colemanite. The first law of thermodynamics and ChemCAD simulation program was used for energy analysis calculations, and the calculations of exergy analysis were carried out by using the second law of thermodynamics. The total energy loss of the reactor unit and the calculated energy loss per 100 kcal input steam were calculated as 110880 kcal/h and 3.724%, and the losses of total exergy in the reactor units and the losses of exergy calculated per 100 kcal input steam were calculated as 225058.86 kcal/h and 30.095%, respectively. Exergy efficiency for the reactor unit has been determined as 3.3 %. Some suggestions were given for the reactor units of boric acid production plants to minimize system losses.
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43

Suganal, Miftahul Huda, Muhammad Ade A. Efendi, et al. "Study on coal to methanol of Arutmin coal." IOP Conference Series: Earth and Environmental Science 882, no. 1 (2021): 012028. http://dx.doi.org/10.1088/1755-1315/882/1/012028.

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Abstract The Indonesian government has encouraged coal mining companies to expand into coal downstream industries. In response to this policy, PT. Arutmin Indonesia has conducted a pre-feasibility study on the construction of a coal-to-methanol plant. The plant was located in the Pulau Laut Utara Coal Terminal (NPLCT). The plant is designed to produce 3.0 million tons of methanol/year. The raw material is supplied from the Sarongga coal mine, about 5 km away from NPLCT. The coal-to-methanol process was simulated using ChemCad to solve chemical and energy problems. Based on heat & material balance simulation results, the plant requires coal of 6.0 million tons/year as a raw material. Air Product technology was chosen for coal gasification and Davy Technology for methanol synthesis. Air product gasifier requires lower oxygen to produce syngas than other technologies, thereby reducing oxygen production costs. The plant needs an investment cost of USD 3.0 billion. With the assumption of a methanol price of 311 USD/ton and 20 years of tax holiday incentives, the financial analysis results show that the construction of coal-to-methanol plant is financially feasible with an NPV value of 289.7 million USD and an IRR of 13.35%.
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44

Huzova, І. O., and V. М. Atamanyuk. "Energy analysis of the production line for canned carrot production." Chemistry, Technology and Application of Substances 4, no. 1 (2021): 145–51. http://dx.doi.org/10.23939/ctas2021.01.145.

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An energy-saving scheme for the production of candied carrots has been developed. The developed scheme includes: washing of raw materials with 1 % NaHCO3 solution, reduction of water consumption for blanching, reduction of syrup consumption for saturation of raw materials with sugar. A new drying technology is introduced: candied fruits are dried in a variable temperature mode, namely: in the initial stages with a heat agent at a temperature of 70 °C, at the final stage – with a heat agent at a temperature of 20 °C. The process of modeling the traditional and energy-saving scheme of candied carrot production in the universal simulation software ChemCad is carried out. The simulation results are analyzed. It is proved that the total energy efficiency of the implemented technology is 340.4 MJ / h or 354.6 kJ / kg of finished product.
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45

James, Corey, Matthew Armstrong, and Andrew Biaglow. "Comparison of pure component thermodynamic properties from CHEMCAD with direct calculation using the Peng-Robinson equation of state." Chemical Data Collections 30 (December 2020): 100571. http://dx.doi.org/10.1016/j.cdc.2020.100571.

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46

Gómez Páez, Sebastián. "Análisis de la ecuación cúbica de estado de Van der Waals: desde la termodinámica clásica hasta la estadística." Revista de Investigación 12, no. 2 (2020): 201–11. http://dx.doi.org/10.29097/2011-639x.299.

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Hoy en día, el equilibrio entre vapor y líquido se estudia y realiza, normalmente, utilizando programas de simulación que permiten a los ingenieros desarrollar diseños, avances y nuevas investigaciones, evadiendo el emocionante análisis de la termodinámica molecular desde sus fundamentos, ya que paquetes computacionales como Aspen® o CHEMCAD® incluyen la mayoría de las ecuaciones de estado disponibles y adecuadas, según el sistema bajo estudio. Sin embargo, el desarrollo ulterior de nuevas y mejores correlaciones para predecir, y, posteriormente, modelar el equilibrio entre vapor y líquido puede detenerse por la novedosa ingeniería química computacional; por esta razón, en este documento se formula una demostración procedimental de cómo la ecuación de Van der Waals, la más famosa y fructífera ecuación de estado, es discernida desde el punto de vista de la termodinámica clásica y la estadística, e incluye una detallada ilustración fenomenológica y matemática acompañada de un caso de estudio.
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47

Piotrowski, Wojciech, and Robert Kubica. "Integration of the Process for Production of Ethyl Acetate by an Enhanced Extraction Process." Processes 9, no. 8 (2021): 1425. http://dx.doi.org/10.3390/pr9081425.

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The paper presents a study on the performance of a conventional plant-producing ethyl acetate from ethanol and acetic acid. Process models were compiled in the simulator Chemcad 7. The impact of key parameters on the performance of individual installation nodes was examined by sensitivity analysis. Three installation approaches are presented and compared: two classic with different heat duties and an improved one. An improved technological solution, with a closed circulation of the extractant as well as the azeotrope subcooling for better extraction is demonstrated. The energy and mass balance of the installation were developed. The proposed enhancement of a technology with significantly reduced consumption of the fresh extractant also offers a deep recovery of the raw materials, i.e., ethyl acetate and ethanol from wastewater. We assumed that the same energy consumption relative to the classic strategy consumption of ethanol was reduced from 0.531 to 0.524 t/tproduct (−1.2%), fresh process water from 2.18 to 1.42 t/tproduct (−34.9%), and wastewater 2.36 to 1.61 t/tproduct (−31.8%). By this, the wastewater total organic loading (TOL), as well as chemical oxygen demand were nine times reduced. The major advantage is achieved through subcooling of azeotrope, which improves extraction efficiency, making the organic phase enriched with ethyl acetate. Therefore, the performance of the product separation node and the whole system are improved.
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48

Dibyo, Sukmanto, and Ign Djoko Irianto. "DESIGN ANALYSIS ON OPERATING PARAMETER OF OUTLET TEMPERATURE AND VOID FRACTION IN RDE STEAM GENERATOR." JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 19, no. 1 (2017): 33. http://dx.doi.org/10.17146/tdm.2017.19.1.3228.

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HTGR is one of the next generation reactor types. HTGR is currently considered as one of the leading reactors for the future nuclear power plant. The steam generator is one of the main components in HTGR as well as in RDE. In the steam generator, the heat is transferred by high temperature helium gas in the shell side to water in the tube side to generate the superheated steam. the purpose of this work is to design the operating parameter of outlet temperature and void fraction of steam based on feed water mass flow rate and inlet temperature variations in RDE steam generator. In this work, the Chemcad program was used. Both inlet and outlet temperature of helium gas have been set up as boundary conditions. The result shows that using the mass flow rate of 4.3 kg/s - 4.8 kg/s and water inlet temperature of 110 oC - 160 oC, the superheated steam outlet temperature (void fraction = 1.0) is obtained in the range of 275.5 oC – 600 oC.This analysis is beneficial to assess 10 MW RDE design especially in the steam generator system operating parameters.Keywords: outlet temperature, void fraction, superheated steam, RDE steam generator ANALISIS DESAIN PARAMETER OPERASI UNTUK TEMPERATUR KELUARAN DAN FRAKSI UAP PADA PEMBANGKIT UAP RDE. Reaktor daya HTGR adalah salah satu tipe reaktor generasi lanjut. HTGR saat ini merupakan desain reaktor yang dipertimbangkan untuk pembangkit listrik unggulan dimasa mendatang. Pembangkit uap merupakan salah satu komponen utama pada HTGR begitu pula pada RDE. Di dalam pembangkit uap, panas dari gas helium temperatur tinggi pada sisi shell di transfer ke air pada sisi tube pembangkit uap untuk menghasilkan uap lewat jenuh. Tujuan analisis ini adalah mendesain parameter operasi terhadap temperatur keluaran dan fraksi uap berdasarkan variasi laju alir massa air umpan dan temperatur masuk pada RDE. Dalam analisis digunakan program Chemcad, temperatur gas helium masuk dan keluar ditentukan sebagai kondisi batas. Hasil menunjukkan bahwa dengan menggunakan laju alir massa 4,3 kg/detik - 4,8 kg/detik dan temperatur masukan air umpan dari 110 oC -160 oC dapat diperoleh uap lewat jenuh (fraksi uap= 1,0) pada temperatur keluaran dalam rentang 275,5 oC - 600 oC. Analisis ini berguna untuk memberikan kajian desain RDE 10 MW khususnya parameter operasi sistem pembangkit uap.Kata-kata kunci: temperatur keluaran, fraksi uap, uap lewat jenuh, pembangkit uap RDE
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49

Giwa, Abdulwahab, John Olusoji Owolabi, and Saidat Olanipekun Giwa. "System Identification and IMC-Based PID Control of a Reactive Distillation Process: A Case Study of n-Butyl Acetate Production." International Journal of Engineering Research in Africa 31 (July 2017): 104–19. http://dx.doi.org/10.4028/www.scientific.net/jera.31.104.

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The identification of a reactive distillation system for the production of n-butyl acetate from the esterification reaction between acetic acid and n-butanol has been carried out in this research work. In order to achieve the aim of the research work, a prototype plant of the process was developed using ChemCAD from which dynamics data were generated upon applications of step changes to the reboiler duty and the reflux ratio, which were the input variables of the system. Thereafter, the transfer function of the process, later represented in Simulink environment, was formulated using the dynamics data and with the aid of MATLAB. The simulation of the transfer function model of the system was also carried out for open loop by applying step changes unto the input variables using the developed Simulink model of the system. Thereafter, the closed-loop control system developed also in Simulink environment was simulated by applying step changes to the set-point variable, which was the bottom mole fraction of n-butyl acetate. The results obtained from the simulation of the prototype plant of the reactive distillation process showed ChemCAD to be a powerful tool for steady state and dynamics prototype plant development. Furthermore, good representation and stability were also observed to exist in the system from the formulation and the simulation of the transfer function model of the process, which were carried out with the aid of MATLAB/Simulink. Moreover, the selection of appropriate closed-loop time constant contained in the tuning parameter formulas of IMC-based control system showed that the value suggested by Rivera et al. [1] was very good for this system, compared to those of Chien and Fruehauf [2] and Skogestad [3], because it could give closed-loop dynamic response with comparatively very low values of integral squared error (ISE), integral absolute error (IAE) and integral time absolute error (ITAE) for both proportional-integral (PI) and proportional-integral-derivative (PID) control systems. In addition, the comparison made between the IMC-based tuning approach and other ones (Cohen-Coon, Tyreus-Luyben and Ziegler-Nichols) considered in this work made it known that IMC-based tuning technique was the best among all those considered because its ISE, IAE and ITAE were found to be the lowest for both PI-and PID-controlled cases simulated.
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50

Sanchez-Segado, Sergio, María José Salar-García, Víctor Manuel Ortiz-Martínez, Antonia Pérez de los Ríos, Francisco José Hernández-Fernández, and Luis Javier Lozano-Blanco. "Evaluation of Ionic Liquids as In Situ Extraction Agents during the Alcoholic Fermentation of Carob Pod Extracts." Fermentation 5, no. 4 (2019): 90. http://dx.doi.org/10.3390/fermentation5040090.

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Anhydrous ethanol is a promising alternative to gasoline in fuel engines. However, since ethanol forms an azeotrope with water, high-energy-consumption separation techniques such as azeotropic distillation, extractive distillation, and molecular sieves are needed to produce anhydrous ethanol. This work discusses the potential development of an integrated process for bioethanol production using ionic liquids and Ceratonia siliqua as a carbohydrate source for further fermentation of the aqueous extracts. A four-stage counter-current system was designed to improve the sugar extraction yield to values close to 99%. The alcoholic fermentation of the extracts showed ethanol concentrations of 95 g/L using the microorganism Saccharomyces cerevisae. The production of anhydrous ethanol through extractive distillation with ethylene glycol was simulated using CHEMCAD software, with an energy consumption of 13.23 MJ/Kg of anhydrous ethanol. Finally, several ionic liquids were analyzed and are proposed as potential solvents for the recovery of bioethanol for the design of an integrated extraction–fermentation–separation process, according to their ability to extract ethanol from aqueous solutions and their biocompatibility with the microorganism used in this study.
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