| 丙烷脱氢Cr_2O_3/Al_2O_3催化剂烧焦再生过程的模型化与模拟(英文) |
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| 引用本文： | 张新平,隋志军,周兴贵,袁渭康.丙烷脱氢Cr_2O_3/Al_2O_3催化剂烧焦再生过程的模型化与模拟(英文)[J].中国化学工程学报,2010,18(4):618-625. |
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| 作者姓名： | 张新平 隋志军 周兴贵 袁渭康 |
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| 作者单位： | State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| 基金项目： | the National Natural Science Foundation of China;the Ministry of Education of China |
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| 摘 要： | A heterogeneous model is developed for the regeneration of the Cr2O3/Al2O3 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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| 关 键 词： | propane dehydrogenation coke combustion regeneration heterogeneous model simulation |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31
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Modeling and simulation of coke combustion regeneration for coked Cr2O3/Al2O3 propane dehydrogenation catalyst |
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| ZHANG Xinping,SUI Zhijun,ZHOU Xinggui,YUAN Weikang.Modeling and simulation of coke combustion regeneration for coked Cr2O3/Al2O3 propane dehydrogenation catalyst[J].Chinese Journal of Chemical Engineering,2010,18(4):618-625. |
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| Authors: | ZHANG Xinping SUI Zhijun ZHOU Xinggui YUAN Weikang |
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| Affiliation: | State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | A heterogeneous model is developed for the regeneration of the Cr2O3/Al2O3 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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| Keywords: | propane dehydrogenation coke combustion regeneration heterogeneous model simulation |
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