Relevant bibliographies by topics / Vibrated fluidised bed dryer

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Academic literature on the topic 'Vibrated fluidised bed dryer'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Vibrated fluidised bed dryer"

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Lehmann, Soeren E., Moritz Buchholz, Alfred Jongsma, Fredrik Innings, and Stefan Heinrich. "Modeling and Flowsheet Simulation of Vibrated Fluidized Bed Dryers." Processes 9, no. 1 (December 29, 2020): 52. http://dx.doi.org/10.3390/pr9010052.

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Drying in fluidized beds is an important step in the production of powdered materials. Especially in the food and pharmaceutical industry, fluidized bed dryers are often vibrated to improve the drying process. In the current work, a continuous fluidized bed drying model is implemented in the novel, open-source flowsheet simulation framework Dyssol. The new model accounts for the hydrodynamic characteristics of all Geldart groups as well as the impact of mechanical vibration on the drying process. Distributed particle properties are considered by the model. Comprehensive validation of the model was conducted for a wide range of process parameters, different materials, dryer geometries and dimensions as well as the impact of vibration. Particle properties are predicted accurately and represent the broad experimental data well. A sensitivity analysis of the model confirmed grid independence and the validity of underlying model assumptions.
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Alvarez, P. I., R. Blasco, J. Gomez, and F. A. Cubillos. "A First Principles–Neural Networks Approach to Model a Vibrated Fluidized Bed Dryer: Simulations and Experimental Results." Drying Technology 23, no. 1-2 (February 23, 2005): 187–203. http://dx.doi.org/10.1081/drt-200047661.

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Suherman, Suherman, and Rona Trisnaningtyas. "ANALISA ENERGI DAN EKSERGI PADA PENGERINGAN TEPUNG TAPIOKA MENGGUNAKAN PENGERING KONTINYU UNGGUN FLUIDISASI GETAR." Reaktor 16, no. 1 (May 15, 2016): 24. http://dx.doi.org/10.14710/reaktor.16.1.24-31.

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Energy and exergy analysis of cassava starch drying in continuous vibrated fluidized bed dryer were carried out to assess the performance of the system in terms of energy utilization ratio, energy efficiency, exergy inflow and outflow, exergy loss, and exergetic efficiency. The results showed cassava starch has starch content 87%, degree of whiteness 95%, negative fiber content, sperichal granula with average diameter12.32 μm, orthorhombic crystal structure and crystal size 47.467 nm . Energy utilization and energy utilization ratio increased from 0.08 to 0.20 J/s and 0.35 to 0.4 as the drying temperature increased from 50 to 70 oC. Energy efficiency increased from 13.80 % to 23.31 %, while exergy inflow, outflow, and losses increased from 4.701 to 14.678, 2.277 to 6.344, and 2.424 to 8.334 J/s respectively in the above temperature range. Exergetic efficiency decreased with increase in drying air temperature, while exergetic improvement potential increased with increased drying air temperature. Keywords: Cassava starch, continuous drying, energy and exergy analysis, vibrated fluidized bed Abstrak Analisis energi dan eksergi pengeringan pati tapioka menggunakan pengering kontinu unggun fluidisasi getar, telah dilakukan untuk menilai kinerja sistem dalam bentuk utilisasi energi, efisiensi energi, eksergi masuk dan keluar, eksergi hilang dan efisiensi eksergi. Hasil analisis pati memiliki kandungan starch 87%, tingkat keputihan 95%, kandungan serat negatif, bentuk partikel granular spherical dengan diameter 12,32 μm, struktur kristal orthorhombic dan ukuran kristal sebesar 47,467 nm. Peningkatan suhu pengering dari 50 menjadi 70 0C akan meningkatkan utilisasi energi dan rasio utilisasi energi dari 0,08 menjadi 0,20 J/s dan 0,35 menjadi 0,4. Efisiensi energi meningkat dari 13,80% hingga 23,31%, sedangkan eksergi masuk dan keluar, eksergi hilang meningkat dari 4,701 menjadi 14,678, 2,277 menjadi 6,344, dan 2,424 menjadi 8,334 J/s. Efisiensi eksergi menurun dengan naiknya suhu sedangkan potensi pengembangan eksergi meningkat dengan naiknya suhu. Kata kunci:. Analisis energi dan eksergi, pati tapioka, pengeringan kontinu, unggun fluidisasi getar
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Eflita, Yohana, Haryanto Ismoyo, Dwiputra Muhamad Adrian, and Luqmanul H. Yusuf. "Static and Dynamic Analysis of Vibro Fluidized Bed Dryer using Finite Element Method." E3S Web of Conferences 73 (2018): 05029. http://dx.doi.org/10.1051/e3sconf/20187305029.

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Vibro Fluidized bed dryer is a widely used tea dryer now. Its function is to stop the enzymatic oxidation process and decrease water content up to 2,8-3,8%. The working principle is to use the vibrations generated by the eccentric motor so that the tea powder that runs on the bed will vibrate. The purpose of this research is to model, static and dynamic of vibro fluidized bed dryer. The analysis was to determine the maximum stress and natural frequency of the vibro fluidized bed dryer to the variation of green tea mass being processed. Using dynamic analysis the obtained first three natural frequencies of the vibro fluidized bed dryer were 5,8876 Hz, 9,5267 Hz, and 10,512 Hz. The results showed that at 695 kg tea mass the natural frequency has the same as the excitation frequency. In this case, the safety factor of the vibro fluidized bed dryer is 27.6. It can be concluded that the maximum capacity of the vibro fluidized bed dryer is 695 kg..
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Lehmann, S. E., A. Jongsma, F. Innings, and S. Heinrich. "Modeling of vibrated fluidized‐bed dryers." Chemie Ingenieur Technik 92, no. 9 (August 28, 2020): 1161. http://dx.doi.org/10.1002/cite.202055069.

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Jading, Abadi, Paulus Payung, and Reniana Reniana. "KAJIAN TEKNIS-EKONOMIS ALAT PENGERING PATI SAGU MODEL CROSS FLOW VIBRO FLUIDIZED BED (Study on Technical-Economic of Sago Starch Dryer Model of Cross Flow Vibro Fluidized Bed)." Jurnal Agritech 34, no. 04 (February 11, 2015): 448. http://dx.doi.org/10.22146/agritech.9440.

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The purpose of this research was to evaluate performance of vibro cross flow fluidized bed dryer using biomass fuel for drying sago starch. The phase of research were evaluation of dryer heated by a biomass stove using coconut shell as a fuel and observation of the drying temperature, moisture content, drying time, energy analysis, and drying effiviency, as well as calculation of its economic analysis. The dryer has dimension of 200x50x1500 cm for length, width, hight, respectively, and working capacity of 35kg/process. The results showed that biomass fuel consumption for drying sago starch for 7 hours was 12740,00 MJ (70 kg/process) and electricity consumption for blower and vibrator was 37,80 MJ. Furthermore, the dryer reduced moisture content of sago starch from 42% (wb) to 12% (wb) with temperature in the vibrator chamber of 40-60 oC and relative humidity of 50%, as well as ambient temperature of 30 3C and drying efficiency of 46,02%. Economic analysis showed that the dryer had NPV of Rp. 16.002.858, BCR of 1,53, IRR of 35%, and PBP of 3,51 years.Keywords: Cross flow, vibro fluidized bed dryer, biomass stoves, sago starch, financial analysis ABSTRAKTujuan penelitian ini adalah melakukan pengujian terhadap alat pengering pati berbasis sagu model cross flow vibrofluidized bed bertenaga biomassa. Tahapan penelitian meliputi pengujian alat pengering menggunakan tungku biomassa berbahan bakar tempurung kelapa dengan melakukan pengamatan suhu selama pengeringan, penurunan kadar air, waktu pengeringan, kebutuhan energi, efisiensi pengering, dan analisis finansial. Konstruksi alat pengering pati sagu model vibro fluidized bed bertenaga biomassa berukuran panjang, lebar dan tinggi masing-masing (200x50x1500) cm, serta memiliki daya tampung atau kapasitas maksimum pati sagu basah 35 kg/proses. Hasil pengujian menunjukkan bahwa alat pengering ini mampu mengeringkan pati sagu selama 7 jam, dengan konsumsi bahan bakar tempurung kelapa sebanyak 70 kg/proses (1274MJ), kebutuhan daya listrik untuk tenaga blower dan vibrator(37,80 MJ), serta mampu menurunkan kadar air pati sagu dari 42%bb menjadi 12%bb dengan suhu dalam ruang vibrator adalah 40-60 oC, RH 50%, suhu lingkungan 30C dan efisiensi pemanasan (pengeringan) 46,02%.Hasil analisis finansial menunjukan bahwa investasi alat pengering vibro fluidized bedsangat layak dilaksanakan berdasarkan kriteria NPV = Rp. 16.002.858, BCR= 1,53, IRR= 35%, dan PBP tertutupi setelah 3,51 tahun. Kata kunci: Aliran silang, vibro fluidized bed dryer, tungku biomassa, pati sagu, analisis finansial
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Bahu, R. E. "FLUIDISED BED DRYER SCALE-UP." Drying Technology 12, no. 1-2 (January 1994): 329–39. http://dx.doi.org/10.1080/07373939408959959.

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Finzer, J. R. D., M. A. Sfredo, G. D. B. Sousa, and J. R. Limaverde. "Dispersion coefficient of coffee berries in vibrated bed dryer." Journal of Food Engineering 79, no. 3 (April 2007): 905–12. http://dx.doi.org/10.1016/j.jfoodeng.2006.03.011.

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Villegas, J. A., W. Q. Yang, S. R. Duncan, R. S. Raghavan, and H. G. Wang. "Optimal operating conditions for a batch fluidised bed dryer." IET Control Theory & Applications 4, no. 2 (February 1, 2010): 294–302. http://dx.doi.org/10.1049/iet-cta.2009.0039.

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Villegas, Javier A., Stephen R. Duncan, Haigang G. Wang, Wuquiang Q. Yang, and Rambali S. Raghavan. "Distributed parameter control of a batch fluidised bed dryer." Control Engineering Practice 17, no. 9 (September 2009): 1096–106. http://dx.doi.org/10.1016/j.conengprac.2009.04.012.

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Dissertations / Theses on the topic "Vibrated fluidised bed dryer"

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Picado, Apolinar. "An Analytical Solution Applied to Heat and Mass Transfer in a Vibrated Fluidised Bed Dryer." Licentiate thesis, KTH, Teknisk strömningslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34241.

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A mathematical model for the drying of particulate solids in a continuous vibrated fluidised bed dryer was developed and applied to the drying of grain wetted with a single liquid and porous particles containing multicomponent liquid mixtures. Simple equipment and material models were applied to describe the process. In the plug-flow equipment model, a thin layer of particles moving forward and well mixed in the direction of the gas flow was regarded; thus, only the longitudinal changes of particle moisture content and composition as well as temperature along the dryer were considered. Concerning the material model, mass and heat transfer in a single isolated particle was studied. For grain wetted with a single liquid, mass and heat transfer within the particles was described by effective transfer coefficients. Assuming a constant effective mass transport coefficient and effective thermal conductivity of the wet particles, analytical solutions of the mass and energy balances were obtained. The variation of both transport coefficients along the dryer was taken into account by a stepwise application of the analytical solution in space intervals with non-uniform inlet conditions and averaged coefficients from previous locations in the dryer. Calculation results were verified by comparison with experimental data from the literature. There was fairly good agreement between experimental data and simulation but the results depend strongly on the correlation used to calculate heat and mass transfer coefficients.   For the case of particles containing a multicomponent liquid mixture dried in the vibrated fluidised bed dryer, interactive diffusion and heat conduction were considered the main mechanisms for mass and heat transfer within the particles. Assuming a constant matrix of effective multicomponent diffusion coefficients and thermal conductivity of the wet particles, analytical solutions of the diffusion and conduction equations were obtained. The equations for mass transfer were decoupled by a similarity transformation and solved simultaneously with conduction equation by the variable separation method. Simulations gave a good insight into the selectivity of the drying process and can be used to find conditions to improve aroma retention during drying.   Also, analytical solutions of the diffusion and conduction equations applied to liquid-side-controlled convective drying of a multicomponent liquid film were developed. Assuming constant physical properties of the liquid, the equations describing interactive mass transfer are decoupled by a similarity transformation and solved simultaneously with conduction equation and the ordinary differential equation that describes the changes in the liquid film thickness. Variations of physical properties along the process trajectory were taken into account as in the previous cases. Simulation results were compared with experimental data from the literature and a fairly good agreement was obtained. Simulations performed with ternary liquid mixtures containing only volatile components and ternary mixtures containing components of negligible volatility showed that it is difficult to obtain an evaporation process that is completely controlled by the liquid-side mass transfer. This occurs irrespective of the initial drying conditions.   Despite simplifications, the analytical solution of the material model gives a good insight into the selectivity of the drying process and is computationally fast. The solution can be a useful tool for process exploration and optimisation. It can also be used to accelerate convergence and reduce tedious and time-consuming calculations when more rigorous models are solved numerically.
QC 20110614
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Haeri, Nejad Masoud. "Drying of Porous Particles containing Liquid Mixtures in a Continuous Vibrated Fluid Bed Dryer." Thesis, KTH, Skolan för kemivetenskap (CHE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156215.

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The influence of operation parameters on the drying of spherical porous particles containing a mixture of solvents evaporating into nitrogen in a continuously worked vibrated fluid-bed dryer was studied. A simulation based on the analytical solution to heat and mass transfer equations was applied and modifications were suggested.   Four different ternary liquid mixtures were selected: Acetone-Chloroform-Methanol (ACM), Ethanol- 2-propanol-Water (EIpW), Water-Ethanol-Ethyl Acetate (WEEa) and Ethanol-Methylethylketone- Toluene (EMekT). For the solid, physical properties of Pyrex was used.   Comparison of composition- and temperature- profiles indicated that there is no resistance against heat transfer within the solid and that the heat transfer is much faster than mass transfer.   Selectivity diagrams were drawn. The results indicated that selectivity is an important parameter in predicting the drying behavior.   The retention ratio was studied as performance parameter. Its variation was studied in response to changes in operation parameters, including gas velocity and temperature, as well as solid temperature and particle size.   A  modification  to  the  model  was  examined  by  assuming  a  liquid-content-dependent  diffusion resistance factor. It was observed that implementing such an assumption yields decreased values for retention ratios.   The  effect  of  vibration  on  heat  and  mass  transfer  coefficients  was  included  using  a  correlation suggested by Sbrodov and the resulting effect on retention ratio was examined.
Inverkan   av   driftparameter  på  torkning  av   sfäriska  porösa  partiklar  som   innehåller lösningsmedelblandningar som avdunstar i kväve i en kontinuerligt viberande fluidbädd-tork studerades.  En  simuleringsmodell  baserad  på  den  analytiska  lösningen  till  värme-  och materieöverföringsekvationerna användes och ändringar föreslogs.   Fyra  olika  tärnar  vätskeblandningar  valdes:  aceton-kloroform-metanol(ACM),  etanol-2- propanolvatten,(EIpW),     vatten-etanol-etylacetat     (WEEa)     och     etanol-metyletylketon- toluen(EMekT). För den fasta fasen användes fysikaliska egenskaper liknande Pyrex.   Sammansättnings-  och  temperatur-profiler  visade  att  det  inte  finns  något  motstånd  mot värmeöverföring  i  den  fasta  fasen  och  att  värmeöverföringen  sker  mycket  snabbare  än materieöverförningen.   Selektivitetsdiagram ritades. Resultaten indikerar att selektivititen är en viktig parmeter för att förutsäga beteendet vid torkning.   Retentionsförhållandet  användes  som  ett  prestandamått.  Dess  variation  med  avseende  på förändringar av  driftsparmetrar,  bland  annat  gasen  hastighet  och  temperatur  samt  den  fasta  fasens temperatur och partikelstorlek, studerades.   En modifiering av modellen undersöktes genom att införa en vätskehalts-beroende faktor för diffusionsmotståndet. Detta minskade värdena på retentionsförhållandena.   Vibrationens inverkan på värme- och materieöverföring infördes genom att använda Sbrodov samband, och den resulterande effekten på retentionsförhållandet observerades.
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Book chapters on the topic "Vibrated fluidised bed dryer"

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Elkhashap, A., D. Abel, and R. Meier. "Modelling and Control of a Continuous Vibrated Fluidized Bed Dryer in Pharmaceutical Production." In Automation 2019, 159–74. VDI Verlag, 2019. http://dx.doi.org/10.51202/9783181023518-159.

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"Spray-Fluid Bed–Vibrated Fluid Bed Dryer." In Advanced Drying Technologies, Second Edition, 375–77. CRC Press, 2009. http://dx.doi.org/10.1201/9781420073898.ch28.

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Conference papers on the topic "Vibrated fluidised bed dryer"

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Suherman and Rona Trisnaningtyas. "Thin layer drying of cassava starch using continuous vibrated fluidized bed dryer." In INTERNATIONAL CONFERENCE OF CHEMICAL AND MATERIAL ENGINEERING (ICCME) 2015: Green Technology for Sustainable Chemical Products and Processes. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4938375.

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Elkhashap, Ahmed, Robin Meier, and Dirk Abel. "A Grey Box Distributed Parameter Model for a Continuous Vibrated Fluidized Bed Dryer in Pharmaceutical Manufacturing." In 2020 European Control Conference (ECC). IEEE, 2020. http://dx.doi.org/10.23919/ecc51009.2020.9143770.

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MEOR TALIB, MEOR ZAINAL, SUHAILA BINTI ABDULLAH, WAN RAMLI WAN DAUD, and SITI MASRINDA TASIRIN. "ON-LINE WEB-BASED DESIGN SIMULATOR OF A PLUG FLOW FLUIDISED BED CROSS-FLOW DRYER." In The Proceedings of the 5th Asia-Pacific Drying Conference. World Scientific Publishing Company, 2007. http://dx.doi.org/10.1142/9789812771957_0091.

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Taheri, Saeedeh, Graham Ian Brodie, and Dorin Gupta. "EFFECTIVENESS OF A MICROWAVE FLUIDISED BED DRYER IN ERADICATION OF SEED-BORNE BOTRYTIS GREY MOLD OF LENTILS." In Ampere 2019. Valencia: Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9635.

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Lentil is one of the important pulse crops in the world with a high proportion of easily digestible protein. However, there are several pests and pathogens which cause losses during crop growth, harvesting and post-harvest storage. Microwave processing has shown great potential to eradicate pests and pathogens from grains; however, there is still concerns about its heat uniformity, which is of crucial importance in pest and pathogen control. Fluidization using forced hot air is one of the potential solutions for having uniform temperature during microwave processing. In this study, a single mode microwave cavity, with a 2.45 GHz microwave source, was modified to have a microwave fluidized bed and used to evaluate its potential to eliminate the Botrytis grey mold (BGM) pathogen, which is one of the important seed-borne pathogens of lentil crops in Australia. Air speed was maintained to be constant during the experiment and was just enough to fluidize 100g of red lentils in the sample holder. Two wet based (w.b.) seed moisture contents (m.c.) of 10.5% and 18.5% were prepared and the process parameters were selected as: air temperature at 50 and 60°C; microwave power at 0, 300, 400 W for 18.5% m.c. and 0, 400, 500 W for 10.5% m.c.; and exposure times of 5 and 10 min. These parameters were chosen to reach the final temperature of below 70°C. The effect of process parameters on seed moisture loss, seed germination, electrical conductivity of seed soaking water and percentage of infected seeds (IS%) were analyzed using general factorial regression and analysis of variance. The results showed that the most effective factors on moisture loss, after seed moisture content, was exposure time, followed by microwave power and air temperature. While final bed temperature was affected mostly by air temperature, and then by microwave power. Furthermore, based on general full factorial regression and pareto chart of standardized effects, moisture content had by far the most influence on the reduction of IS%. Seed pathogen inoculum reduction, without significant seed viability loss, was obtained by applying microwave power of 300W and set air temperature of 60°C (actual inlet air temperature of 57±1°C) on seeds with m.c. of 18.5% for 10 min. This gave a 27% reduction in IS% (from 82% to 55%).
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