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Computational Fluid Dynamics Study of Channel Geometric Effect for Fischer-Tropsch Microchannel Reactor
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  • Journal title : Korean Chemical Engineering Research
  • Volume 52, Issue 6,  2014, pp.826-833
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2014.52.6.826
 Title & Authors
Computational Fluid Dynamics Study of Channel Geometric Effect for Fischer-Tropsch Microchannel Reactor
Na, Jonggeol; Jung, Ikhwan; Kshetrimayum, Krishnadash S.; Park, Seongho; Park, Chansaem; Han, Chonghun;
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Driven by both environmental and economic reasons, the development of small to medium scale GTL(gas-to-liquid) process for offshore applications and for utilizing other stranded or associated gas has recently been studied increasingly. Microchannel GTL reactors have been prefrered over the conventional GTL reactors for such applications, due to its compactness, and additional advantages of small heat and mass transfer distance desired for high heat transfer performance and reactor conversion. In this work, multi-microchannel reactor was simulated by using commercial CFD code, ANSYS FLUENT, to study the geometric effect of the microchannels on the heat transfer phenomena. A heat generation curve was first calculated by modeling a Fischer-Tropsch reaction in a single-microchannel reactor model using Matlab-ASPEN integration platform. The calculated heat generation curve was implemented to the CFD model. Four design variables based on the microchannel geometry namely coolant channel width, coolant channel height, coolant channel to process channel distance, and coolant channel to coolant channel distance, were selected for calculating three dependent variables namely, heat flux, maximum temperature of coolant channel, and maximum temperature of process channel. The simulation results were visualized to understand the effects of the design variables on the dependent variables. Heat flux and maximum temperature of cooling channel and process channel were found to be increasing when coolant channel width and height were decreased. Coolant channel to process channel distance was found to have no effect on the heat transfer phenomena. Finally, total heat flux was found to be increasing and maximum coolant channel temperature to be decreasing when coolant channel to coolant channel distance was decreased. Using the qualitative trend revealed from the present study, an appropriate process channel and coolant channel geometry along with the distance between the adjacent channels can be recommended for a microchannel reactor that meet a desired reactor performance on heat transfer phenomena and hence reactor conversion of a Fischer-Tropsch microchannel reactor.
GTL;Fischer Tropsch;Microchannel;CFD;Simulation;Reactor;
 Cited by
전산유체역학을 이용한 Fischer-Tropsch 마이크로채널 반응기 반응채널구조에 따른 열적 효과 분석,이용규;정익환;나종걸;박성호;;한종훈;

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Oxford Catalysts Group PLC., Technical experts' report on the Velocys technology prepared by Nexant, Inc., 27(2008).

Jun, K.-W., "GTL: Manufacturing Technology of Natural Gas to Synthetic Crude Oil," KCS, 36(3), 8-15(2009).

TOYO EGINEERING., "Offshore GTL Process Development By Microchannel Reactor," Automation Systems, 8, 82-88(2012).

Jarosch, K. T., Tonkovich, A. L. Y., Perry, S. T., Kuhlmann, D. and Wang, Y., "Microchannel Reactors for Intensifying Gas-toliquid Technology," ACS Symp. Ser., 914, 258-272(2005).

Bajus, M., "Microchannel-Technologies," Petroleum & Coal, 54, 294-300(2012).

Wang, Y., Vanderwiel, D. P., Tonkovich, A. L. Y., Gao, Y. and Baker, E. G., "Catalyst Structure and Method of Fischer-tropsch Synthesis," U.S. Patent No. 6, 451, 864(2002).

Arzamendi, G., Dieguez, P. M., Montes, M., Odriozola, J. A., Falabella Sousa-Aguiar, E. and Gandia, L. M., "Computational Fluid Dynamics Study of Heat Transfer in a Microchannel Reactor for Low-temperature Fischer-Tropsch Synthesis," Chem. Eng. J., 160, 915(2010). crossref(new window)

Kandlikar, S. G. and Upadhye, H. R., "Extending the Heat Flux Limit with Enhanced Microchannels in Direct Single-phase Cooling of Computer Chips," Semiconductor Thermal Measurement and Management Symposium 2005 IEEE Twenty First Annual IEEE, 8-15(2005).

An, H., Li, A., Sasmito, A. P., Kurnia, J. C., Jangam, S. V. and Mujumdar, A. S., "Computational Fluid Dynamics (CFD) Analysis of Micro-reactor Performance: Effect of Various Configurations," Chem. Eng. Sci., 75, 85(2012). crossref(new window)

Kusakabe, K., Morooka, S. and Maeda, H., "Development of a Microchannel Catalytic Reactor System," Korean J. Chem. Eng., 18, 271(2001). crossref(new window)

Yand, J.-I., Chun, D. H., Park, J. C. and Jung, H., "Kinetic Study of the Fischer-Tropsch Synthesis and Water Gas Shift Reactions over a Precipitated Iron Catalyst," Korean Chem. Eng. Res., 50, 358(2012). crossref(new window)

Guettel, R. and Turek, T., "Comparison of Different Reactor Types for Lowtemperature Fischer-Tropsch Synthesis: A Simulation Study," Chem. Eng. Sci., 64(5), 955-964(2009). crossref(new window)

Derevich, I. V., Ermolaev, V. S., Mordkovich, V. Z. and Galdina, D. D., "Simulation of Fluid Dynamics in a Microchannel Fischer-Tropsch Reactor," Theor. Found. Chem. Eng., 46(1), 8-19(2012). crossref(new window)

Van der Laan, G. P. and Beenackers, A. A. C. M., "Kinetics and Selectivity of the Fischer-Tropsch Synthesis: A Literature Review," Cat. Rev. Sci. Eng., 41(3-4), 255-318(1999). crossref(new window)

Yates, I. C. and Satterfield, C. N., "Intrinsic Kinetics of the Fischer-Tropsch Synthesis on a Cobalt Catalyst," Energy Fuels, 5(1), 168-173(1991). crossref(new window)

Atashi, H., Siami, F., Mirzaei, A. A. and Sarkari, M., "Kinetic study of Fischer-Tropsch Process on Titania-supported Cobaltmanganese Catalyst," J. Ind. Eng. Chem., 16(6), 952-961(2010). crossref(new window)

Fazlollahi, F., Sarkari, M., Zare, A., Mirzaei, A. A. and Atashi, H., "Development of a Kinetic Model for Fischer-Tropsch Synthesis over $Co/Ni/Al_2O_3$ Catalyst," J. Ind. Eng. Chem., 18(4), 1223-1232(2012). crossref(new window)

Krishna, K. R. and Bell, A. T., "Estimates of the Rate Coefficients for Chain Initiation, Propagation, and Termination during Fischer-Tropsch Synthesis over $Ru/TiO_2$," J. Catal., 139(1), 104-118(1993). crossref(new window)

Knochen, J., Guttel, R., Knobloch, C. and Turek, T., "Fischertropsch Synthesis in Milli-structured Fixed-bed Reactors: Experimental Study and Scale-up Considerations," Chem. Eng. Process., 49, 958(2010). crossref(new window)

Post, M., Van't Hoog, A., Minderhoud, J. and Sie, S., "Diffusion Limitations in Fischer-tropsch Catalysts," AIChE J., 35, 1107(1989). crossref(new window)

Menter, F. R., "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications," AIAA J., 32, 1598(1994). crossref(new window)

Derevich, I. V., Ermolaev, V. S. and Mordkovich, V. Z., "Liquid-Vpor Thermodynamic Equilibrium in Fischer-Tropsch Synthesis Products," Theor. Found. Chem. Eng., 42, 216(2008). crossref(new window)

Lee, C.-J., Lim, Y., Kim, H. S. and Han, C., "Optimal Gas-To-Liquid Product Selection from Natural Gas under Uncertain Price Scenarios," Ind. Eng. Chem. Res., 48, 794(2008).

Derevich, I. V., Ermolaev, V. S., Zol'nikova, N. V. and Mordkovich, V. Z., "Thermodynamics of Wax Formation in the Fischer-Tropsch Synthesis Products," Theor. Found. Chem. Eng., 47, 191(2013). crossref(new window)