Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors

›› 2008, Vol. 16 ›› Issue (5): 670-678.

• TRANSPORT PHENOMENA & FLUID MECHANICS • Previous Articles Next Articles

Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors

WANG Shuyan¹, LU Huilin¹, GAO Jinsen², XU Chunming², SUN Dan¹

1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. State Key Laboratory of Heavy Oil processing, China University of Petroleum, Beijing 102249, China

Received:2007-10-09 Revised:2008-08-06 Online:2008-10-28 Published:2008-10-28
Supported by:
the National Natural Science Foundation of China (50776023);NSFC-Petro China (20490200).

Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors

王淑彦¹, 陆慧林¹, 高金森², 徐春明², 孙丹¹

1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. State Key Laboratory of Heavy Oil processing, China University of Petroleum, Beijing 102249, China

通讯作者: WANG Shuyan,E-mail:wangshuyan@hit.edu.cn
基金资助:
the National Natural Science Foundation of China (50776023);NSFC-Petro China (20490200).

Abstract

Abstract: Behavior of catalytic cracking reactions of particle cluster in fluid catalytic cracking (FCC) riser reactors was numerically analyzed using a four-lump mathematical model. Effects of the cluster porosity, inlet gas velocity and temperature, and coke deposition on cracking reactions of the cluster were investigated. Distributions of temperature, gases, and gasoline from both catalyst particle cluster and an isolated catalyst particle are presented. The reaction rates from vacuum gas oil (VGO) to gasoline, gas and coke of individual particle in the cluster are higher than those of the isolated particle, but it reverses for the reaction rates from gasoline to gas and coke. Less gasoline is produced by particle clustering. Simulated results show that the produced mass fluxes of gas and gasoline increase with the operating temperature and molar concentration of VGO, and decrease due to the formation of coke.

Key words: cluster, fluid catalytic cracking, numerical simulation, riser

摘要： Behavior of catalytic cracking reactions of particle cluster in fluid catalytic cracking (FCC) riser reactors was numerically analyzed using a four-lump mathematical model. Effects of the cluster porosity, inlet gas velocity and temperature, and coke deposition on cracking reactions of the cluster were investigated. Distributions of temperature, gases, and gasoline from both catalyst particle cluster and an isolated catalyst particle are presented. The reaction rates from vacuum gas oil (VGO) to gasoline, gas and coke of individual particle in the cluster are higher than those of the isolated particle, but it reverses for the reaction rates from gasoline to gas and coke. Less gasoline is produced by particle clustering. Simulated results show that the produced mass fluxes of gas and gasoline increase with the operating temperature and molar concentration of VGO, and decrease due to the formation of coke.

关键词: cluster, fluid catalytic cracking, numerical simulation, riser

WANG Shuyan, LU Huilin, GAO Jinsen, XU Chunming, SUN Dan. Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors[J]. , 2008, 16(5): 670-678.

王淑彦, 陆慧林, 高金森, 徐春明, 孙丹. Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors[J]. , 2008, 16(5): 670-678.

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Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors

Numerical Predication of Cracking Reaction of Particle Clusters in Fluid Catalytic Cracking Riser Reactors

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