Multiphysics coupling rule of semi-coke catalytic tar cracking

Feng Jie; Xue Jun; Hu Yaowei; Song Yuncai; Li Wenying

doi:10.1016/j.cjche.2025.07.016

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Multiphysics coupling rule of semi-coke catalytic tar cracking

Updated：2026-03-13

- Multiphysics coupling rule of semi-coke catalytic tar cracking
- Chinese Journal of Chemical Engineering Vol. 89, Issue 1, Pages: 293-301(2026)
- Affiliations：
  
  State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
  Shanxi Research Institute of Huairou Laboratory, Taiyuan 030032, China
- Author bio：
  
  Corresponding authors. E-mail addresses: songyuncai@tyut.edu.cn(Y. Song)
  ying@tyut.edu.cn(W. Li).
- Funds：
- DOI：10.1016/j.cjche.2025.07.016
  CLC：
- Received：10 May 2025，
  
  Revised：2025-07-21，
  
  Accepted：27 July 2025，
  
  Online First：08 January 2026，
  
  Published：2026-01
- Accepted：
Scan QR Code
Feng Jie, Xue Jun, Hu Yaowei, et al. Multiphysics coupling rule of semi-coke catalytic tar cracking[J]. Chinese Journal of Chemical Engineering, 2026, 89(1): 293-301.
DOI：

Feng Jie, Xue Jun, Hu Yaowei, et al. Multiphysics coupling rule of semi-coke catalytic tar cracking[J]. Chinese Journal of Chemical Engineering, 2026, 89(1): 293-301. DOI： 10.1016/j.cjche.2025.07.016.

摘要

Abstract

This study investigates catalytic tar cracking over semi-coke catalysts

addressing reaction kinetics challenges by integrating experimental data with a COMSOL Multiphysics model. A multi-physics framework combines catalysis

carbon deposition

and self-consumption to analyze toluene (tar model compound) removal. The model evaluates intrinsic catalytic activity

porosity evolution

and porous media flow

revealing that toluene conversion is governed by diffusion/convective mass transfer

homogeneous reactions

and surface reactions influenced by dynamic carbon deposition/removal. Increasing temperature from 973 to 1173 K enhances gas-film heat and mass transfer coefficient

accelerating tar cracking rates and extending catalyst lifetime. Elevated temperatures improve gas-solid phase heat/mass transfer

promoting efficient tar removal during syngas purification. The results highlight the interplay between reaction kinetics

carbon deposition dynamics

and transport phenomena in optimizing semi-coke catalyst performance under high-temperature conditions.

关键词

Keywords

references

D. Xu, Y.Q. Xiong, J.D. Ye, Y.H. Su, Q. Dong, S.P. Zhang, Performances of syngas production and deposited coke regulation during co-gasification of biomass and plastic wastes over Ni/γ-Al 2 O 3 catalyst: role of biomass to plastic ratio in feedstock, Chem. Eng. J. 392 (2020) 123728.

X. Zeng, F. Wang, H.L. Li, Y. Wang, L. Dong, J. Yu, G.W. Xu, Pilot verification of a low-tar two-stage coal gasification process with a fluidized bed pyrolyzer and fixed bed gasifier, Appl. Energy 115(2014) 9—16.

Y.F. Shen, Chars as carbonaceous adsorbents/catalysts for tar elimination during biomass pyrolysis or gasification, Renew. Sustain. Energy Rev. 43 (2015) 281—295.

V. Ahuja, A.K. Palai, A. Kumar, A.K. Patel, A.A. Farooque, Y.H. Yang, S.K. Bhatia, Biochar: empowering the future of energy production and storage, J. Anal. Appl. Pyrolysis 177(2024)106370.

R. Potnuri, D.V. Surya, C.S. Rao, A. Yadav, V. Sridevi, N. Remya, A review on analysis of biochar produced from microwave-assisted pyrolysis of agricultural waste biomass, J. Anal. Appl. Pyrolysis 173 (2023) 106094.

C. Di Stasi, S. Renda, G. Greco, B. Gonza'lez, V. Palma, J.J. Manya`, Wheat-strawderived activated biochar as a renewable support of Ni-CeO 2 catalysts for CO 2 methanation, Sustainability 13 (16) (2021) 8939.

Z. Abu El-Rub, E.A. Bramer , G. Brem, Experimental comparison of biomass chars with other catalysts for tar reduction, Fuel 87(10—11)(2008)2243—2252.

M. Zhang, G.F. Fan, N. Liu, M.D. Yang, X.X. Li, Y.L. Wu, Tar removal in pine pyrolysis catalyzed by bio-char supported nickel catalyst, J. Anal. Appl. Pyrolysis 169 (2023) 105843.

W.Q. Fan, M.H. Tahir, D.Z. Chen, L. Hong, L.J. Yin, H.M. Yu, High quality oil and H 2 -rich gas production from municipal solid wastes through pyrolysis and catalytic reforming: Comparison of differently modified waste char-based catalysts, J. Anal. Appl. Pyrolysis 178 (2024) 106382.

H.L. Sun, D.D. Feng, Y.J. Zhao, S.Z. Sun, J.Q. Wu, P.X. Wang, G.Z. Chang, X.Y. Lai, H.P. Tan, Y.K. Qin, Mechanism of catalytic tar reforming over biochar:description of volatile-H 2 O-char interaction, Fuel 275 (2020) 117954.

N. Wang, D.Z. Chen, U. Arena, P.J. He, Hot char-catalytic reforming of volatiles from MSW pyrolysis, Appl. Energy 191(2017)111—124.

C.Y. Deng, W.J. Song, Z. Chai, S. Guo, Z.P. Zhu, Characteristics of tar thermal cracking and catalytic conversion during circulating fluidized bed char gasification, Energy Fuel. 34 (1)(2020)142—149.

X. Zeng, F. Wang, Z.N. Han, J.Z. Han, J.L. Zhang, R.C. Wu, G.W. Xu, Assessment of char property on tar catalytic reforming in a fluidized bed reactor for adopting a two-stage gasification process, Appl. Energy 248(2019)115—125.

N. Muradov, F. Smith, A. T-Raissi, Cat alytic activity of carbons for methane decomposition reaction, Catal. Today 102-103(2005)225—233.

A. Voorhies Jr., Carbon formation in catalytic cracking, Ind. Eng. Chem. 37(4) (1945)318—322.

D. Buentello-Montoya, X.L. Zhang, J. Li, V. Ranade, S. Marques, M. Geron, Performance of biochar as a catalyst for tar steam reforming: effect of the porous structure, Appl. Energy 259 (2020)114176.

Y. Song, Y. Chen, Y. Song, J. Feng, Catalyst design and reactor analysis for insitu purification of organic solid waste syngas, Chem. Ind. Eng. Prog. 42 (2023) 1383—1396. (in Chinese)

J.T. Richardson, S.A. Paripatyadar, Carbon dioxide reforming of methane with supported rhodium, Appl. Catal. 61 (1)(1990)293—309.

J.W. Snoeck, G.F. Froment, M. Fowles, Filamentous carbon formation and gasification: thermodynamics, driving force, nucleation, and steady-state growth, J. Catal. 169(1)(1997)240—249.

Y. Song, J. Feng, W. Li, A reaction device for catalytic cracking of tar with a carbon-based catalyst, US Pat., CN214881318U (2021). (in Chinese)

J.J. Carberry, A boundary-layer model of fluid-particle mass transfer in fixed beds, AIChE J. 6(3)(1960)460—463.

N. Kishore, S. Gu, Momentum and heat transfer phenomena of spheroid particles at moderate Reynolds and Prandtl numbers, Int. J. Heat Mass Tran. 54(11—12)(2011)2595—2601.

F. Yoshida, D. Ramaswami, O.A. Hougen, Temperatures and partial pressures at the surfaces of catalyst particles, AIChE J. 8(1)(1962)5—11.

D.J. Gunn, Transfer of heat or mass to particles in fixed and fluidised beds, Int. J. Heat Mass Tran. 21 (4)(1978)467—476.

J.W. Snoeck, G.F. Froment, M. Fowles, Steam/CO 2 reforming of methane. carbon filament formation by the Boudouard reaction and gasification by CO 2 , by H 2 , and by steam: kinetic study, Ind. Eng. Chem. Res. 41 (17) (2002) 4252—4265.

U. Oemar, M.L. Ang, K. Hidajat, S. Kawi, Mechanism and kinetic modeling for steam reforming of toluene on La 0.8 Sr 0.2 Ni 0.8 Fe 0.2 O 3 catalyst, AIChE J. 60 (12) (2014) 4190—4198.

S.G. Zavarukhin, G.G. Kuvshinov, The kinetic model of formation of nanofibrous carbon from CH 4 —H 2 mixture over a high-loaded nickel catalyst with consideration for the catalyst deactivation, Appl. Catal. Gen. 272 (1—2) (2004) 219—227.

X. Zeng, L.M. Wang, F. Wang, D.D. Hu, P. Wu, X.Y. Lai, Comparison of reaction characteristics and kinetics between tar thermal cracking and steam reforming in a micro fluidized bed reaction analyzer, J. Anal. Appl. Pyrolysis 169(2023)105846.

J. Fermoso, M.V. Gil, C. Pevida, J.J. Pis, F. Rubiera, Kinetic models comparison for non-isothermal steam gasification of coal—biomass blend chars, Chem. Eng. J. 161(1—2) (2010 )276—284.

M.M. Sun, J.L. Zhang, K.J. Li, K. Guo, Z.M. Wang, C.H. Jiang, Gasification kinetics of bulk coke in theCO 2 /CO/H 2 /H 2 O/N 2 system simulating the atmosphere in the industrial blast furnace, Int. J. Miner. Metall. Mater. 26 (10) (2019) 1247—1257.

M. Yan, M. Zeng, Q.Y. Chen, Q.W. Wang, Numerical study on carbon deposition of SOFC with unsteady state variation of porosity, Appl. Energy 97 (2012) 754—762.

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