CIESC Journal ›› 2018, Vol. 69 ›› Issue (7): 2985-2992.doi: 10.11949/j.issn.0438-1157.20180104

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Application of CFD to improve calculated process of methanation over plum-shaped catalyst

ZHANG Jie, LI Tao   

  1. Engineering Research Center of Large Scale Reactor Engineering and Technology, East China University of Science and Technology, Shanghai 200237, China
  • Received:2018-01-23 Revised:2018-03-09 Online:2018-07-05 Published:2018-03-14

Abstract:

The simulation of methanation process is studied by CFD, and makes reasonable improvement to the model. The three-dimensional model of methanation reaction on the plum-shaped catalyst was established and the validity of the model was verified. Due to strong diffusion limitations the CO concentration of catalyst particles has great difference between the internal and external. Inside the catalyst, reaction conditions are changed to be a high H/C value. The diffusion rate of H2 is larger than CO. A single kinetics can't describe the reaction accurately. The catalyst domain is divided into two parts according to the variety of CO concentration in catalyst, and different kinetics is applied into the corresponding domain. Under the control of two kinetics, the average reaction rate of methanation has been accelerated, which is closer to the actual process and show that the new model is more accurate.

Key words: methanation, computational fluid dynamics, catalyst, optimal design, diffusion

CLC Number: 

  • TQ021.4

[1] 崔晓曦, 曹会博, 孟凡会, 等. 合成气甲烷化热力学计算分析[J]. 天然气化工, 2012, 37(5):15-19. CUI X X, CAO H B, MENG F H, et al. Thermodynamic analysis for methanation of syngas[J]. Natural Gas Chemical Industry, 2012, 37(5):15-19.
[2] KOPYSCINSKI J, SCHILDHAUER T J, BIOLLAZ S M A. Production of synthetic natural gas (SNG) from coal and dry biomass-a technology review from 1950 to 2009[J]. Fuel, 2010, 89(8):1763-1783.
[3] 朱瑞春, 公维恒, 范少锋.煤制天然气工艺技术研究[J]. 洁净煤技术, 2011, 17(6):81-85. ZHU R C, GONG W H, FAN S F. Research on technology of synthetic natural gas from coal[J]. Clean Coal Technology, 2011, 17(6):81-85.
[4] 胡大成, 高加俭, 贾春苗. 甲烷化催化剂及反应机理的研究进展[J]. 过程工程学报, 2011, 11(5):880-893. HU D C, GAO J J, JIA C M. Research advances in methanation catalysts and their catalytic mechanisms[J]. The Chinese Journal of Process Engineering, 2011, 11(5):880-893.
[5] ROSTRUP J R, PEDERSEN K, SEHESTED J. High temperature methanation:sintering and structure sensitivity[J]. Applied Catalysis A General, 2007, 330(40):134-138.
[6] GAO J, LIU Q, GU F, et al. Recent advances in methanation catalysts for the production of synthetic natural gas[J]. RSC Advances, 2015, 5(29):22759-22776.
[7] KAGYRMANOVA A P, ZOLOTARSKⅡ I A, SMIRNOV E I, et al. Optimum dimensions of shaped steam reforming catalyst[J]. Chemical Engineering Journal, 2007, 134(1):228-234.
[8] NGUYEN T T M, WISSING L, SKIØTH R M S. High temperature methanation:catalyst consideration[J]. Catalysis Today, 2013, 215:233-238.
[9] 樊蓉蓉, 甘霖, 朱炳辰. 异形多通孔催化剂工程研究(Ⅰ):12孔及24孔当量直径测定[J]. 化工学报, 2001, 52(2):170-172. FAN R R, GAN L, ZHU B C. Engineering research of irregular shape catalyst with through-hole(Ⅰ):Determination of equivalent diameters of pellets with 12 and 24 through-holes[J]. Journal of Chemical Industry and Engineering (China), 2001, 52(2):170-172.
[10] MARIANI N J, KEEGAN S D, MARINEZ O M, et al. A onedimensional equivalent model to evaluate overall reaction rates in catalytic pellets[J]. Chemical Engineering Research & Design, 2003, 81(8):1033-1042.
[11] PEDEMARA M N, PINA J, BORIO D O, et al. Use of a heterogeneous two-dimensional model to improve the primary steam reformer performance[J]. Chemical Engineering Journal, 2003, 94(1):29-40.
[12] FRIAS F A, TUDELA I, LOUISNARD O, et al. Optimized design of an electrochemical filter-press reactor using CFD methods[J]. Chemical Engineering Journal, 2011, 169:270-281.
[13] EKAMBARA K, NANDAKUMAR K, JOSHI J B. CFD simulation of bubble column reactor using population balance[J]. Industrial & Engineering Chemistry Research, 2008, 47(21):8505-8516.
[14] NIJEMEISLAND M, DIXON A G. Comparison of CFD simulations to experiment for convective heat transfer in a gas-solid fixed bed[J]. Chemical Engineering Journal, 2001, 82:231-246.
[15] BEHNAM M, DIXON A G, NIJEMEISLAND M, et al. Catalyst deactivation in 3D CFD resolved particle simulations of propane dehydrogenation[J]. Industrial Engineering Chemistry Research, 2010, 49:10641-10650.
[16] NIJEMEISLAND M, DIXON A G, STITT E H.Catalyst design by CFD for heat transfer and reaction in steam reforming[J]. Chemical Engineering Science, 2004, 59(2):5185-5191.
[17] TASKIN M E, DIXON A G, NIJEMEISLAND M, et al. CFD study of the influence of catalyst particle design on steam reforming reaction heat effects in narrow packed tubes[J]. Industrial & Engineering Chemistry Research, 2008, 47(16):5966-5975.
[18] 房鼎业. 扩散过程对气-固相催化反应速率的影响[J]. 化肥设计, 1981, (1):15-26. FANG D Y. Effect of diffusion process on gas-solid catalytic reaction rate[J]. Chemical Fertilizer Design, 1981, (1):15-26.
[19] LI H, WANG J, CHEN C, et al. Effects of macro-pores on reducing internal diffusion limitations in Fischer-Tropsch synthesis using a hierarchical cobalt catalyst[J]. RSC Advances, 2017, 7(16):9436-9445.
[20] TASKIN ME, TROUPEL A, DIXON A G, et al. Flow, transport, and reaction interactions for cylindrical particles with strongly endothermic reactions[J]. Industrial & Engineering Chemistry Research, 2010, 49(19):9026-9037.
[21] NASERI A T, PEPPLEY B A, PHARAOH J G. Computational analysis of the reacting flow in a microstructured reformer using a multiscale approach[J]. AIChE Journal, 2014, 60(6):2263-2274.
[22] KOLACZKOWSKI S T, CHAO R, AWDRY S, et al. Application of a CFD code (Fluent) to formulate models of catalytic gas phase reactions in porous catalyst pellets[J]. Chemical Engineering Research & Design, 2007, 85(11):1539-1552.
[23] TASKIN M E, DIXON A G, STITT E H, et al. Approximation of reaction heat effects in cylindrical catalyst particles with internal voids using CFD[J]. Chemical Engineering Faculty Publications, 2007, 5(1):56-72.
[24] DIXON A G, NIJEMEISLAND M, STITT E H. Systematic mesh development for 3D CFD simulation of fixed beds:single sphere study[J]. Computers & Chemical Engineering, 2011, 35(7):1171-1185.
[25] DIXON A G, NIJEMEISLAND M, STITT E H. Systematic mesh development for 3D CFD simulation of fixed beds:contact point study[J]. Computers & Chemical Engineering, 2013, 48:135-153.
[26] FOGLER H S. Elements of Chemical Reaction Engineering.[M]. 4th ed. New York:Pearson Education, 2006:813-827.
[27] KOPYSCINSKI J, SCHILDHAUER T J, VOGEL F, et al. Applying spatially resolved concentration and temperature measurements in a catalytic plate reactor for the kinetic study of CO methanation[J]. Journal of Catalysis, 2010, 271(2):262-279.
[28] 张继炎, 霍夫曼H. 在内循环式无梯度反应器中一氧化碳甲烷化反应动力学的研究[J]. 化工学报, 1986, 37(2):252-257. ZHANG J Y, HUFFMAN H. A kinetic study of carbon monoxide methanation in a gradientless reactor with internal recycle[J]. Journal of Chemical Industry and Engineering (China), 1986, 37(2):252-257.
[29] TASKIN M E, DIXON A G, STITT E H. CFD study of fluid flow and heat transfer in a fixed bed of cylinders[J]. Numerical Heat Transfer Part A:Applications, 2007, 52(3):203-218.
[30] DIXON A G, BOUDREAU J, ROCHELEAU A, et al. Flow, transport, and reaction interactions in shaped cylindrical particles for steam methane reforming[J]. Industrial & Engineering Chemistry Research, 2012, 51(49):15839-15854.

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