Modeling and Simulation of Coke Combustion Regeneration for Coked Cr2O3/Al2O3 Propane Dehydrogenation Catalyst

张新平; 隋志军; 周兴贵; 袁渭康

doi:10.1016/S1004-9541(10)60265-0

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Modeling and Simulation of Coke Combustion Regeneration for Coked Cr₂O₃/Al₂O₃ Propane Dehydrogenation Catalyst

Updated：2026-01-06

- Modeling and Simulation of Coke Combustion Regeneration for Coked Cr₂O₃/Al₂O₃ Propane Dehydrogenation Catalyst
- Modeling and Simulation of Coke Combustion Regeneration for Coked Cr₂O₃/Al₂O₃ Propane Dehydrogenation Catalyst
- 中国化学工程学报（英文版） 2010年18卷第4期页码：618-625
- Affiliations：
  
  State Key Laboratory of Chemical Engineering, East China University of Science and Technology,Shanghai,China,200237
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China(20736011);the Ministry of Education of China(IRT0721)
- DOI：10.1016/S1004-9541(10)60265-0
  中图分类号：
- 纸质出版：2010
- Accepted：
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张新平, 隋志军, 周兴贵, 等. Modeling and Simulation of Coke Combustion Regeneration for Coked Cr₂O₃/Al₂O₃ Propane Dehydrogenation Catalyst[J]. 中国化学工程学报（英文版）, 2010,18(4):618-625. DOI: 10.1016/S1004-9541(10)60265-0.

O
张新平, 隋志军, 周兴贵, 等. Modeling and Simulation of Coke Combustion Regeneration for Coked Cr₂O₃/Al₂O₃ Propane Dehydrogenation Catalyst[J]. 中国化学工程学报（英文版）, 2010,18(4):618-625. DOI: 10.1016/S1004-9541(10)60265-0. DOI：

O DOI： 10.1016/S1004-9541(10)60265-0.

摘要

Abstract

A heterogeneous model is developed for the regeneration of the Cr

/Al

catalyst for the propane dehydrogenation process by considering the internal mass transfer and external mass/heat transfer during the coke combustion.Simulation shows that under practical operating conditions

multi-steady states exist for the catalyst pellets and the catalyst temperature is sensitive to gas temperature.However

at increased mass flow rate or lowered oxygen concentration

multi-steady states will not appear.Under the strong influences of film diffusion

the coke in the packed bed reactor will first be exhausted at the inlet

while if the film diffusion resistance is decreased

the position of first coke exhaustion moves toward the outlet of the reactor.

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