Log in

Relevant bibliographies by topics / Plug-flow reactor / Journal articles

To see the other types of publications on this topic, follow the link: Plug-flow reactor.

Journal articles on the topic 'Plug-flow reactor'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Plug-flow reactor.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Selvamony, Subash Chandra Bose. "Kinetics and Product Selectivity (Yield) of Second Order Competitive Consecutive Reactions in Fed-Batch Reactor and Plug Flow Reactor." ISRN Chemical Engineering 2013 (September 12, 2013): 1–17. http://dx.doi.org/10.1155/2013/591546.

Full text

Abstract:

This literature compares the performance of second order competitive consecutive reaction in Fed-Batch Reactor with that in continuous Plug Flow Reactor. In a kinetic sense, this simulation study aims to develop a case for continuous Plug Flow Reactor in pharmaceutical, fine chemical, and related other chemical industries. MATLAB is used to find solutions for the differential equations. The simulation results show that, for certain cases of nonelementary scenario, product selectivity is higher in Plug Flow Reactor than Fed-Batch Reactor despite the fact that it is the same in both the reactors for elementary reaction. The effect of temperature and concentration gradients is beyond the scope of this literature.

APA, Harvard, Vancouver, ISO, and other styles

2

Wojciechowski, B. W., and N. M. Rice. "Temperature-scanning plug flow reactor." Chemical Engineering Science 48, no. 16 (August 1993): 2881–87. http://dx.doi.org/10.1016/0009-2509(93)80034-n.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Lindeque, Rowan, and John Woodley. "Reactor Selection for Effective Continuous Biocatalytic Production of Pharmaceuticals." Catalysts 9, no. 3 (March 14, 2019): 262. http://dx.doi.org/10.3390/catal9030262.

Full text

Abstract:

Enzyme catalyzed reactions are rapidly becoming an invaluable tool for the synthesis of many active pharmaceutical ingredients. These reactions are commonly performed in batch, but continuous biocatalysis is gaining interest in industry because it would allow seamless integration of chemical and enzymatic reaction steps. However, because this is an emerging field, little attention has been paid towards the suitability of different reactor types for continuous biocatalytic reactions. Two types of continuous flow reactor are possible: continuous stirred tank and continuous plug-flow. These reactor types differ in a number of ways, but in this contribution, we focus on residence time distribution and how enzyme kinetics are affected by the unique mass balance of each reactor. For the first time, we present a tool to facilitate reactor selection for continuous biocatalytic production of pharmaceuticals. From this analysis, it was found that plug-flow reactors should generally be the system of choice. However, there are particular cases where they may need to be coupled with a continuous stirred tank reactor or replaced entirely by a series of continuous stirred tank reactors, which can approximate plug-flow behavior. This systematic approach should accelerate the implementation of biocatalysis for continuous pharmaceutical production.

APA, Harvard, Vancouver, ISO, and other styles

4

Liu, Daoyin, Zhonglin Zhang, Yaming Zhuang, and Xiaoping Chen. "Comparison of CFD Simulation and Simplified Modeling of a Fluidized Bed CO2 Capture Reactor." International Journal of Chemical Reactor Engineering 14, no. 1 (February 1, 2016): 133–41. http://dx.doi.org/10.1515/ijcre-2015-0058.

Full text

Abstract:

AbstractCO2 capture using solid sorbents in fluidized bed reactors is a promising technology. The multiphase CFD model is increasingly developed to study the reactors, but it is difficult to model all the realistic details and it requires significant computational time. In this study, both the multiphase CFD model (i.e., CFD-DEM model coupled with reaction) and the simplified reactor models (i.e., plug flow model and bubbling two-phase model) are developed for modeling a fluidized bed CO2 capture reactor. The comparisons are made at different gas velocities from fixed bed to fluidized bed. The DEM based model reveals a detailed view of CO2 adsorption process with particle flow dynamics, based on which the assumptions in the simplified models can be evaluated. The plug flow model predictions generally show similar trends to the DEM model but there are quantitative differences; thus, it can be used to determine the reactor performance limit. The bubbling two-phase model gives better predictions than the plug flow model because the effect of bubbles on the inter-phase mass transfer and reaction is included. In the future, a closer combination of the multiphase CFD simulation and the simplified reactor models will likely be an efficient design method of CO2 capture fluidized bed reactors.

APA, Harvard, Vancouver, ISO, and other styles

5

Wojciechowski, B. W. "The temperature-scanning adiabatic plug-flow reactor." Canadian Journal of Chemical Engineering 70, no. 4 (March 27, 2009): 721–26. http://dx.doi.org/10.1002/cjce.5450700415.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

García-Lacuna, Jorge, Gema Domínguez, Jaime Blanco-Urgoiti, and Javier Pérez-Castells. "A catalytic scalable Pauson–Khand reaction in a plug flow reactor." Chemical Communications 53, no. 28 (2017): 4014–17. http://dx.doi.org/10.1039/c7cc01749a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Castro Figueroa, A. R., J. Talavera, and M. Colominas. "Flow Optimization in a Class of Enzymatic Plug-Flow Reactor." Biotechnology Progress 13, no. 1 (February 5, 1997): 109–12. http://dx.doi.org/10.1021/bp9600905.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Gadgil, Prasad N. "Capillary plug flow distributor for stagnation point flow APCVD reactor." Materials Letters 20, no. 5-6 (August 1994): 351–54. http://dx.doi.org/10.1016/0167-577x(94)90043-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Muñoz Sierra, J. D., C. Picioreanu, and M. C. M. van Loosdrecht. "Modeling phototrophic biofilms in a plug-flow reactor." Water Science and Technology 70, no. 7 (August 23, 2014): 1261–70. http://dx.doi.org/10.2166/wst.2014.368.

Full text

Abstract:

The use of phototrophic biofilms in wastewater treatment has been recognized as a potential option for development of new reactor configurations. For better understanding of these systems, a numerical model was developed including relevant microbial processes. As a novelty, this model was implemented in COMSOL Multiphysics, a modern computational environment for complex dynamic models. A two-dimensional biofilm model was used to study the spatial distribution of microbial species within the biofilm and along the length of the reactor. The biofilm model was coupled with a one-dimensional plug-flow bulk liquid model. The impact of different operational conditions on the chemical oxygen demand (COD) and ammonia conversions was assessed. The model was tuned by varying two parameters: the half-saturation coefficient for light use by phototrophs and the oxygen mass transfer coefficient. The mass transfer coefficient was found to be determining for the substrate conversion rate. Simulations indicate that heterotrophs would overgrow nitrifiers and phototrophs within the biofilm until a low biodegradable COD value in the wastewater is reached (organic loading rate <2.32 gCOD/(m2 d)). This limits the proposed positive effect of treating wastewater with a combination of algae and heterotrophs/autotrophs. Mechanistic models like this one are made for understanding the microbial interactions and their influence on the reactor performance.

APA, Harvard, Vancouver, ISO, and other styles

10

Taylor, Annette F., Jonathan R. Bamforth, and Peter Bardsley. "Complex pattern development in a plug–flow reactor." Phys. Chem. Chem. Phys. 4, no. 22 (2002): 5640–43. http://dx.doi.org/10.1039/b207836h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Adesina, A. A., and J. A. Omoleye. "Optimal design of an adiabatic plug flow reactor." Computers & Chemical Engineering 15, no. 7 (July 1991): 521–24. http://dx.doi.org/10.1016/0098-1354(91)85030-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Liu, Tuanchi. "Anaerobic digestion of solid substrates in an innovative two-phase plug-flow reactor (TPPFR) and a conventional single-phase continuously stirred-tank reactor." Water Science and Technology 38, no. 8-9 (October 1, 1998): 453–61. http://dx.doi.org/10.2166/wst.1998.0837.

Full text

Abstract:

An innovative mesophilic continuous-feed anaerobic plug-flow reactor was employed to study system performance with solid feeds from 3% to 16% TS and hydraulic retention times from 32.0 to 13.1 days. The reactor performance under high-solid feeds (>10% TS) corresponding to phase separation along the longitudinal distance of the plug-flow reactor was discussed. The two-phase plug-flow reactor (TPPFR) always recovered from acidogenic conditions prevailing at the head end of the TPPFR, and the methanogenic phase was dominant within the remainder of the TPPFR. As the feed solids concentration increased to greater than 16% (loading capacity of the feed solids concentration) and as the acidogenic phase was extended, the methanogenic bacteria could not recover from the “sour” digestion as shown by the decreased gas/or methane production rate. With same feeds and under same operating conditions, the performance of the plug-flow reactor with phase separation is much better than that of the conventional single-phase continuously stirred-tank reactor (CSTR) in terms of efficiency and overall bioconversion.

APA, Harvard, Vancouver, ISO, and other styles

13

Yin, Shui E. "Numerical Simulation of NO Conversion in the N₂/O₂/NO by Dielectric Barrier Discharge." Applied Mechanics and Materials 84-85 (August 2011): 426–30. http://dx.doi.org/10.4028/www.scientific.net/amm.84-85.426.

Full text

Abstract:

The SO2 and NOX from the coal-fired power station are the main gaseous pollutants in the air, which causes acid rain and photochemical smog. However, the two consequences are recognized as one of the most serious global environment problems and must be controlled. The electro-catalysts oxidation technology is capable of oxidized the NO which the wet flue gas desulfurization processes (WFGD) could not achieve this goal, the products from the electro-catalysts oxidation reactor entering the WFGD and to removal then removed simultaneously. In this work, a plug-flow reactors model is presented that can describe the conversion of NOx by the discharge treatment of the exhaust gases at low temperatures and at atmospheric pressure in dielectric barrier reactors. The model takes into account the behavior of a plug-flow reactor are simplified versions of the general relations for conservation of mass, energy, and momentum. The variation regularity of the generated nitrogen oxides, the main free radicals, and the rate of NO produce (ROP) were be analog by take the plug flow reactor (PFR) model of chemical reaction kinetics in the mixed flue gas of N2/NO/O2 , and trying to seek out the dominant reactions relation to production and consumption NO in the non-equilibrium plasma system. The results indicated that the dominant free radical is the O3 in the mixed flue gas of N2/NO/O2.

APA, Harvard, Vancouver, ISO, and other styles

14

Butler, Robert G., and Irvin Glassman. "Cyclopentadiene combustion in a plug flow reactor near 1150K." Proceedings of the Combustion Institute 32, no. 1 (2009): 395–402. http://dx.doi.org/10.1016/j.proci.2008.05.010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Muslu, Yilmaz. "Numerical approach to plug-flow activated sludge reactor kinetics." Computers in Biology and Medicine 30, no. 4 (July 2000): 207–23. http://dx.doi.org/10.1016/s0010-4825(00)00009-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Siettos, C. I., A. G. Boudouvis, and G. V. Bafas. "Fuzzy Adaptive Control of a Plug Flow Tubular Reactor." IFAC Proceedings Volumes 31, no. 11 (June 1998): 685–89. http://dx.doi.org/10.1016/s1474-6670(17)45005-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Fassouane, Aziz, Jean-Marc Laval, Jacques Moiroux, and Christian Bourdillon. "Electrochemical regeneration of NAD in a plug-flow reactor." Biotechnology and Bioengineering 35, no. 9 (April 15, 1990): 935–39. http://dx.doi.org/10.1002/bit.260350911.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Alopaeus, Ville, Helena Laavi, and Juhani Aittamaa. "A dynamic model for plug flow reactor state profiles." Computers & Chemical Engineering 32, no. 7 (July 2008): 1494–506. http://dx.doi.org/10.1016/j.compchemeng.2007.06.025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Tsai, D. D. W., and P. H. Chen. "Differentiation criteria study for continuous stirred tank reactor and plug flow reactor." Теоретические основы химической технологии 47, no. 6 (2013): 690–97. http://dx.doi.org/10.7868/s0040357113060134.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Manzello, Samuel L., David B. Lenhert, Ahmet Yozgatligil, Michael T. Donovan, George W. Mulholland, Michael R. Zachariah, and Wing Tsang. "Soot particle size distributions in a well-stirred reactor/plug flow reactor." Proceedings of the Combustion Institute 31, no. 1 (January 2007): 675–83. http://dx.doi.org/10.1016/j.proci.2006.07.013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Tsai, D. D. W., and P. H. Chen. "Differentiation criteria study for continuous stirred tank reactor and plug flow reactor." Theoretical Foundations of Chemical Engineering 47, no. 6 (November 2013): 750–57. http://dx.doi.org/10.1134/s0040579513060122.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Tseng, S. K., R. T. Lin, and K. L. Liau. "Verification of Dispersion Model on Anaerobic Reaction Simulation." Water Science and Technology 26, no. 9-11 (November 1, 1992): 2377–80. http://dx.doi.org/10.2166/wst.1992.0741.

Full text

Abstract:

A dispersion model was established on the combination of biological reaction and related physical-operational characteristics, such as dispersion, diffusion, cell accumulation and transportation. Also, the feasibility of the dispersion model in anaerobic filter digester simulation was identified. Under low loading rate and without recirculation, the digester behaves like a plug flow reactor. Therefore, the simulated results of dispersion model and plug flow model are similiar. However, at higher loading rate, the dispersion of digester increases, and the simulated results of the dispersion model are closer to experimental data than the plug model. That proved the applicability of dispersion model in anaerobic reaction simulation.

APA, Harvard, Vancouver, ISO, and other styles

23

Molin, Paul, and Patrick Gervais. "Convergence of a series of well-stirred reactors to plug-flow reactor." AIChE Journal 41, no. 5 (May 1995): 1346–48. http://dx.doi.org/10.1002/aic.690410533.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Hadisoebroto, Rositayanti, Yazid Bindar, and Suprihanto Notodarmojo. "Simulation of effective volume increasement inside oxidation ditch reactor." MATEC Web of Conferences 197 (2018): 13022. http://dx.doi.org/10.1051/matecconf/201819713022.

Full text

Abstract:

Oxidation ditch reactor is wastewater treatment unit that based on activated sludge process. Water flow characteristic inside reactor is either completely-mixed reactor or plug flow reactor. Water flow characterization plays important role in wastewater treatment process. To ensure the biological process going well, the water flow in reactor must be completely mixed type. Characterization study of water flow in reactor consume time thus financial, so the simulation using CFD (Computational Fluid Dynamics) becomes a good solution. Based on the calibrated model, the CFD simulation was generate to define the water flow characteristic of the oxidation ditch reactor in longitudinal section. The simulation was conducted using VoF (Volume of Fluid) scheme, an open surface model in unsteady flow with k-ε turbulence model. The simulation result shows that water flow inside the oxidation ditch reactor was plug flow. The role of aeration system is to increase water flow to be more homogen, indicated by higher effective volume inside the reactor. The simulation result shows that the aerator could increase effective volume inside the reactor from 32,94% into 55,5%. The higher effective volume means dead zone inside the reactor is reduced.

APA, Harvard, Vancouver, ISO, and other styles

25

Dockhorn, T., N. Dichtl, and R. Kayser. "Comparative investigations on COD-removal in sequencing batch reactors and continuous flow plants." Water Science and Technology 43, no. 3 (February 1, 2001): 45–52. http://dx.doi.org/10.2166/wst.2001.0117.

Full text

Abstract:

Investigations on enhanced COD removal from municipal wastewater were performed over a period of 2.5 years, comparing three different types of reactor. The main idea was to determine the influence of the mixing characteristics of the reactor on the treatment processes and the effluent quality. Therefore three pilot plants (a completely mixed reactor, a cascade of three reactors and a SBR) were operated under equal conditions (wastewater, hydraulic load, temperature, sludge age) in parallel to each other. Investigations were carried out at different sludge ages. It could be shown that within one sludge age the CODf removal efficiency increased, when mixing characteristics came closer to the plug flow and it also increased with higher temperatures. A significant correlation was observed between the COD removal efficiency and the sludge load. The higher the sludge load was the greater the CODf concentration in the effluent. Especially the SBR reactor showed an excellent performance under the given operating conditions. Dynamic simulation calculations were carried out, to investigate whether the influence of the type of reactor on the COD-elimination could be described theoretically by combining growth kinetics and the mixing characteristics of the individual reactors. The results showed that performance was better when mixing characteristics came closer to plug flow.

APA, Harvard, Vancouver, ISO, and other styles

26

Rojnuckarin, Atipat, Christodoulos A. Floudas, Herschel Rabitz, and Richard A. Yetter. "Optimal control of a plug flow reactor with a complex reaction mechanism." Journal of Physical Chemistry 97, no. 45 (November 1993): 11689–95. http://dx.doi.org/10.1021/j100147a023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Beniich, N., A. El Bouhtouri, and D. Dochain. "Constrained global adaptive controller for a plug-flow tubular reactor with partial temperature measurements." IMA Journal of Mathematical Control and Information 36, no. 4 (June 19, 2018): 1089–104. http://dx.doi.org/10.1093/imamci/dny019.

Full text

Abstract:

Abstract In this work, a global constrained adaptive output feedback is presented for a class of plug-flow tubular reactors models described by non-linear partial differential equations. The output of the system is the measured temperature in a fixed zone of the reactor. It is then used to regulate the temperature throughout the reactor to a ball with radius $\lambda $ (arbitrarily small) centred at the fixed temperature profile.

APA, Harvard, Vancouver, ISO, and other styles

28

Gardoni, Davide, Elena Ficara, Pompilio Vergine, and Roberto Canziani. "A full-scale plug-flow reactor for biological sludge ozonation." Water Science and Technology 71, no. 4 (October 24, 2014): 560–65. http://dx.doi.org/10.2166/wst.2014.432.

Full text

Abstract:

The reduction of biological excess sludge production using ozone is a well-known technology and is applied in several full-scale plants around the world. Nevertheless, optimisation of the process is not yet adequately documented in the literature. Operational parameters are usually chosen by assuming a direct proportionality between ozone dose and excess sludge reduction. This paper investigates the role of ozone concentration on process efficiency and demonstrates the (non-linear) inverse relationship between ozone dose and specific particulate chemical oxygen demand solubilisation in plug-flow contact reactors. The influence of total suspended solids concentration is also studied and described. No short-term lethal effects on heterotrophic biomass have been observed.

APA, Harvard, Vancouver, ISO, and other styles

29

Gadek, Waldemar, Angelika Łyczkowska, Alexander Scherrmann, Hans-Joachim Gehrmann, Andrzej Szlęk, Helmut Seifert, and Dieter Stapf. "Characterization of Biomass Fuels in Isothermal Plug Flow Reactor (IPFR)." Transactions of the VŠB - Technical University of Ostrava, Mechanical Series 63, no. 2 (December 20, 2017): 11–20. http://dx.doi.org/10.22223/tr.2017-2/2031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Pitarch, J. L., M. Rakhshan, M. M. Mardani, M. S. Sadeghi, and C. de Prada. "Distributed Nonlinear Control of a Plug-flow Reactor Under Saturation." IFAC-PapersOnLine 49, no. 24 (2016): 87–92. http://dx.doi.org/10.1016/j.ifacol.2016.10.760.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Chen, Yu‐Wen, and Charles M. Ablow. "Catalyst deactivation by surface poisoning in a plug flow reactor." Journal of the Chinese Institute of Engineers 10, no. 2 (March 1987): 183–89. http://dx.doi.org/10.1080/02533839.1987.9676959.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Lu, Zhewen, Julien Cochet, Nicolas Leplat, Yi Yang, and Michael J. Brear. "A high-pressure plug flow reactor for combustion chemistry investigations." Measurement Science and Technology 28, no. 10 (September 6, 2017): 105902. http://dx.doi.org/10.1088/1361-6501/aa8023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Fox, David, Noel W. Dunn, Peter P. Gray, and Warwick L. Marsden. "Saccharification of bagasse using a counter-current plug-flow reactor." Journal of Chemical Technology and Biotechnology. Biotechnology 33, no. 2 (April 16, 2008): 114–18. http://dx.doi.org/10.1002/jctb.280330206.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Bogatykh, Innokentij, and Thomas Osterland. "Characterization of Residence Time Distribution in a Plug Flow Reactor." Chemie Ingenieur Technik 91, no. 5 (February 8, 2019): 668–72. http://dx.doi.org/10.1002/cite.201800170.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

SANO, Hideki. "On Reachability and Observability of a Plug-Flow Reactor Equation." Transactions of the Institute of Systems, Control and Information Engineers 20, no. 12 (2007): 457–64. http://dx.doi.org/10.5687/iscie.20.457.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Chen, Zhong, Hongzhen Chen, Xiaoling Liu, Chunlan He, Datian Yue, and Yuanjian Xu. "An inclined plug-flow reactor design for supercritical water oxidation." Chemical Engineering Journal 343 (July 2018): 351–61. http://dx.doi.org/10.1016/j.cej.2018.03.018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Rosso, Cristian, Sebastian Gisbertz, Jason D. Williams, Hannes P. L. Gemoets, Wouter Debrouwer, Bartholomäus Pieber, and C. Oliver Kappe. "An oscillatory plug flow photoreactor facilitates semi-heterogeneous dual nickel/carbon nitride photocatalytic C–N couplings." Reaction Chemistry & Engineering 5, no. 3 (2020): 597–604. http://dx.doi.org/10.1039/d0re00036a.

Full text

Abstract:

Dual nickel/photocatalytic C–N couplings are performed with an organic heterogeneous photocatalyst, in an oscillatory plug flow reactor. Reaction was complete in 20 min residence time, enabling 2.7 g h⁻¹ throughput and 10-fold catalyst recycling.

APA, Harvard, Vancouver, ISO, and other styles

38

Wernik, Michaela, Gellért Sipos, Balázs Buchholcz, Ferenc Darvas, Zoltán Novák, Sándor B. Ötvös, and C. Oliver Kappe. "Continuous flow heterogeneous catalytic reductive aminations under aqueous micellar conditions enabled by an oscillatory plug flow reactor." Green Chemistry 23, no. 15 (2021): 5625–32. http://dx.doi.org/10.1039/d1gc02039k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Azizan, Amizon, and Nornizar Anuar. "Simulating Trambouze reaction for a series reactor." Malaysian Journal of Chemical Engineering and Technology (MJCET) 3, no. 1 (November 30, 2020): 1. http://dx.doi.org/10.24191/mjcet.v3i1.10930.

Full text

Abstract:

Simulating the existing data on Trambouze reaction is compiled in this article. The objective of the work is to present the change of volumetric flow rate and the inlet concentration of key reactant A in a series continuous stirred tank reactor-plug flow reactor (CSTR-PFR) configurations. The volumetric flow rate does not affect selectivity and conversion for a constant volumetric flow rate operating condition, entering CSTR and PFR, at a specific concentration of reactant. The CSTR-PFR series reactor configuration is proposed for the aim of maximizing the selectivity of the desired product B in comparison to the undesired products X and Y. CSTR as the first reactor is capable to achieve the maximum conversion at the highest selectivity of A. PFR is then proposed after CSTR in a configuration of CSTR-PFR, to allow higher conversion value to be achieved for the resulted outlet stream conditions coming out of the first reactor, CSTR. Both reactors commonly encounter a decrease in the initial concentration of A and an increase to the formation of other products. The CSTR entering volumetric flow rate influence the volume sizes needed in achieving the maximum selectivity and conversion

APA, Harvard, Vancouver, ISO, and other styles

40

Horák, Josef, Zdeněk Bělohlav, and František Madron. "Analysis of the oscillatory behaviour of an industrial reactor for the oxonation of propene. Evaluation of flow models based on the response to a pulse signal." Collection of Czechoslovak Chemical Communications 52, no. 6 (1987): 1454–60. http://dx.doi.org/10.1135/cccc19871454.

Full text

Abstract:

The response of an industrial reactor for the oxonation of propene to its spiking with a radioactive tracer was compared with simulated responses obtained for models of various structures, viz. a cascade of two perfectly stirred cells of different size, a cascade of two perfectly stirred cells of the same size with recirculation of the reaction mixture, a cascade of two perfectly stirred cells of the same size with inflow into both cells, and a system of two perfectly stirred cells with back-flow involving a plug-flow element. None of the flow models fitted the experiment perfectly; the best fit was obtained for the combination of perfectly stirred cells and back-flow with a plug-flow element.

APA, Harvard, Vancouver, ISO, and other styles

41

Mularski, Jakub, and Norbert Modliński. "Impact of Chemistry–Turbulence Interaction Modeling Approach on the CFD Simulations of Entrained Flow Coal Gasification." Energies 13, no. 23 (December 7, 2020): 6467. http://dx.doi.org/10.3390/en13236467.

Full text

Abstract:

This paper examines the impact of different chemistry–turbulence interaction approaches on the accuracy of simulations of coal gasification in entrained flow reactors. Infinitely fast chemistry is compared with the eddy dissipation concept considering the influence of turbulence on chemical reactions. Additionally, ideal plug flow reactor study and perfectly stirred reactor study are carried out to estimate the accuracy of chosen simplified chemical kinetic schemes in comparison with two detailed mechanisms. The most accurate global approach and the detailed one are further implemented in the computational fluid dynamics (CFD) code. Special attention is paid to the water–gas shift reaction, which is found to have the key impact on the final gas composition. Three different reactors are examined: a pilot-scale Mitsubishi Heavy Industries reactor, a laboratory-scale reactor at Brigham Young University and a Conoco-Philips E-gas reactor. The aim of this research was to assess the impact of gas phase reaction model accuracy on simulations of the entrained flow gasification process. The investigation covers the following issues: impact of the choice of gas phase kinetic reactions mechanism as well as influence of the turbulence–chemistry interaction model. The advanced turbulence–chemistry models with the complex kinetic mechanisms showed the best agreement with the experimental data.

APA, Harvard, Vancouver, ISO, and other styles

42

Li, Yifeng, Maria Skyllas-Kazacos, and Jie Bao. "A dynamic plug flow reactor model for a vanadium redox flow battery cell." Journal of Power Sources 311 (April 2016): 57–67. http://dx.doi.org/10.1016/j.jpowsour.2016.02.018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Cutler, Andrew Hall, Michael Jerry Antal, and Maitland Jones. "A critical evaluation of the plug-flow idealization of tubular-flow reactor data." Industrial & Engineering Chemistry Research 27, no. 4 (April 1988): 691–97. http://dx.doi.org/10.1021/ie00076a027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Slavnic, Danijela, Branko Bugarski, and Nikola Nikacevic. "Oscillatory flow chemical reactors." Chemical Industry 68, no. 3 (2014): 363–79. http://dx.doi.org/10.2298/hemind130419062s.

Full text

Abstract:

Global market competition, increase in energy and other production costs, demands for high quality products and reduction of waste are forcing pharmaceutical, fine chemicals and biochemical industries, to search for radical solutions. One of the most effective ways to improve the overall production (cost reduction and better control of reactions) is a transition from batch to continuous processes. However, the reactions of interests for the mentioned industry sectors are often slow, thus continuous tubular reactors would be impractically long for flow regimes which provide sufficient heat and mass transfer and narrow residence time distribution. The oscillatory flow reactors (OFR) are newer type of tube reactors which can offer solution by providing continuous operation with approximately plug flow pattern, low shear stress rates and enhanced mass and heat transfer. These benefits are the result of very good mixing in OFR achieved by vortex generation. OFR consists of cylindrical tube containing equally spaced orifice baffles. Fluid oscillations are superimposed on a net (laminar) flow. Eddies are generated when oscillating fluid collides with baffles and passes through orifices. Generation and propagation of vortices create uniform mixing in each reactor cavity (between baffles), providing an overall flow pattern which is close to plug flow. Oscillations can be created by direct action of a piston or a diaphragm on fluid (or alternatively on baffles). This article provides an overview of oscillatory flow reactor technology, its operating principles and basic design and scale - up characteristics. Further, the article reviews the key research findings in heat and mass transfer, shear stress, residence time distribution in OFR, presenting their advantages over the conventional reactors. Finally, relevant process intensification examples from pharmaceutical, polymer and biofuels industries are presented.

APA, Harvard, Vancouver, ISO, and other styles

45

Khongprom, Parinya, Supawadee Ratchasombat, Waritnan Wanchan, Panut Bumphenkiattikul, and Sunun Limtrakul. "Scaling of a catalytic cracking fluidized bed downer reactor based on computational fluid dynamics simulations." RSC Advances 10, no. 5 (2020): 2897–914. http://dx.doi.org/10.1039/c9ra10080f.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

García-Lacuna, Jorge, Gema Domínguez, Jaime Blanco-Urgoiti, and Javier Pérez-Castells. "Synthesis of treprostinil: key Claisen rearrangement and catalytic Pauson–Khand reactions in continuous flow." Organic & Biomolecular Chemistry 17, no. 43 (2019): 9489–501. http://dx.doi.org/10.1039/c9ob02124h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Riittonen, T., T. Salmi, J. P. Mikkola, and J. Wärnå. "Direct Synthesis of 1-Butanol from Ethanol in a Plug Flow Reactor: Reactor and Reaction Kinetics Modeling." Topics in Catalysis 57, no. 17-20 (September 3, 2014): 1425–29. http://dx.doi.org/10.1007/s11244-014-0314-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Guo, Feng Bo, and Yong Fa Zhang. "Carbon Dioxide Reforming of Methane over Carbonaceous Catalyst in a Plug Flow Reactor." Applied Mechanics and Materials 291-294 (February 2013): 726–29. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.726.

Full text

Abstract:

The CO2 reforming of CH4 over carbonaceous catalyst was performed using a Plug Flow Reactor in the temperature range 800~1100°C, the ratio of CH4/CO2=1 and residence time 2~30s under normal pressure. The results showed the carbonaceous catalyst was an effective catalyst for carbon dioxide reforming of methane. With increasing the reaction temperature and residence time both the CH4 conversion and CO2 conversion increased. However, the CO2 conversion was significantly higher compared with the CH4 conversion under the same reaction conditions, which indicated that the gasification reaction of the carbonaceous catalyst and carbon dioxide occurred during the reforming process. Under a reaction temperature of 1050°C and residence time over 30s, the conversion of CH4 and CO2 were 92.7% and 95.4% respectively. The oxygen groups, surface area and pore volume decreased as well as the micro-porous structure of the catalyst surface was significantly reduced for the carbonaceous catalyst after reaction.

APA, Harvard, Vancouver, ISO, and other styles

49

Kruit, J., J. Hulsbeek, and A. Visser. "Bulking sludge solved?!" Water Science and Technology 46, no. 1-2 (July 1, 2002): 457–64. http://dx.doi.org/10.2166/wst.2002.0517.

Full text

Abstract:

At present there is still no final theory explaining the bulking of activated sludge. Previous investigations showed that the sludge settling properties become better and more stable when more plug flow conditions are implemented in wastewater treatment plants for biological nutrient removal. In this research the effect of the process configuration (4 wwtps with fully biological nutrient removal) on the sludge settling properties has been investigated. The results show that a separate anoxic reactor can not avoid the presence of LCFA for the growth of M. parvicella in the anaerobic reactor. A SVI < 120 ml/g could be achieved by: implementation of a separate anoxic reactor with plug flow conditions, introducing of a strictly anaerobic reactor (UCT-modification), implementation of an extra anoxic/aerobic reactor, maintaining a high oxygen concentration (> 1.5 mg/l) and creating a low ammonium concentration (< 1 mg/l) in the aerobic reactor.

APA, Harvard, Vancouver, ISO, and other styles

50

Aksikas, Ilyasse, Adrian M. Fuxman, and J. Fraser Forbes. "Control of Time-Varying Distributed Parameter Plug Flow Reactor by LQR." IFAC Proceedings Volumes 41, no. 2 (2008): 11955–60. http://dx.doi.org/10.3182/20080706-5-kr-1001.02023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!