| CFD SIMULATION OF FLUID CATALYTIC CRACKING IN DOWNER REACTORS |
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| 引用本文： | Fei Liu Fei Wei Yu Zheng Yong Jin. CFD SIMULATION OF FLUID CATALYTIC CRACKING IN DOWNER REACTORS[J]. 中国颗粒学报, 2006, 4(3): 160-166 |
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| 作者姓名： | Fei Liu Fei Wei Yu Zheng Yong Jin |
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| 作者单位： | Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： |
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| 关 键 词： | 流化床催化裂化 动态模型 计算流体动力学 气体微粒 |
| 收稿时间： | 2006-01-04 |
| 修稿时间： | 2006-01-042006-04-12 |
CFD SIMULATION OF FLUID CATALYTIC CRACKING IN DOWNER REACTORS |
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| Fei Liu,Fei Wei,Yu Zheng,Yong Jin. CFD SIMULATION OF FLUID CATALYTIC CRACKING IN DOWNER REACTORS[J]. China Particuology, 2006, 4(3): 160-166 |
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| Authors: | Fei Liu Fei Wei Yu Zheng Yong Jin |
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| Abstract: | A mathematical model has been developed for the simulation of gas-particle flow and fluid catalytic cracking in downer reactors. The model takes into account both cracking reaction and flow behavior through a four-lump reaction kinetics coupled with two-phase turbulent flow. The prediction results show that the relatively large change of gas velocity affects directly the axial distribution of solids velocity and void fraction, which significantly interact with the chemical reaction. Furthermore, model simulations are carried out to determine the effects of such parameters on product yields, as bed diameter, reaction temperature and the ratio of catalyst to oil, which are helpful for optimizing the yields of desired products. The model equations are coded and solved on CFX4.4. |
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| Keywords: | downer fluid catalytic cracking (FCC) lumping kinetic model computational fluid dynamics (CFD) |
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