RFCC化学汽提过程的模拟研究

doi:10.11949/j.issn.0438-1157.20160489

化工学报 ›› 2016, Vol. 67 ›› Issue (8): 3244-3250.DOI: 10.11949/j.issn.0438-1157.20160489

RFCC化学汽提过程的模拟研究

刘英杰^1,2, 杨基和¹, 蓝兴英², 高金森²

1 常州大学江苏省绿色催化材料与技术重点实验室, 江苏常州 213164;
2 中国石油大学(北京)重质油国家重点实验室, 北京 102249

收稿日期:2016-04-14 修回日期:2016-06-15 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: 杨基和
基金资助:
国家重点基础研究发展计划项目（2012CB215003）；国家自然科学基金项目（21306014）；江苏省绿色催化材料与技术实验室开放课题基金资助项目（BM2012110）。

Numerical study on RFCC chemical stripping process

LIU Yingjie^1,2, YANG Jihe¹, LAN Xingying², GAO Jinsen²

1 Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, Jiangsu, China;
2 State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

Received:2016-04-14 Revised:2016-06-15 Online:2016-08-05 Published:2016-08-05
Supported by:
supported by the National Basic Research Program of China(2012CB215003), the National Natural Science Foundation of China (21306014) and the Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology (BM2012110).

摘要/Abstract

摘要：

采用欧拉模型耦合反应模型对重油催化裂化环流汽提段内的化学汽提过程进行了模拟研究，考察了汽提段内的颗粒体积分数分布、油气组分分布以及高温再生剂的加入对汽提效果的影响，并与实验值进行了对比。结果表明模拟结果与实验数据基本吻合。模拟得到的汽提段底部颗粒体积分数约为0.3～0.45，而在上部迅速降低至0.2左右。由汽提段底部向上，气体组分和汽油组分含量（质量分数）显著增加，在床层上部达到了20%左右，重组分含量显著降低至床层上部的约30%，而柴油组分含量保持在30%左右变化不大。随着再生剂的加入，汽提段顶部气体组分和汽油组分的含量增加，重组分和柴油组分的含量减小，当再生剂加入量为60%时，重组分含量降至18%。

关键词: 石油, 催化裂化, 汽提, 化学反应, 计算流体力学

Abstract:

Numerical simulation was adopted to study the chemical stripping process in an annular resid fluid catalytic cracking (RFCC) stripper coupling Eulerian model as well as desorption, thermal cracking and catalytic cracking models. Solid volume fraction distributions and species contents in the gas oil along the stripper were investigated. Furtherly, the effect of adding high temperature activated catalysts in the catalyst inlet on stripping was analyzed. The results showed that the simulation results were in acceptable agreements with the experimental data. The simulated solid volume fraction at the bottom of the stripper was about 0.3-0.45, while in the upper section it showed a sharp decrease to 0.2. From bottom up, the contents of gas and gasoline components increased significantly to about 20% at the top, those of heavy components decreased to nearly 30% and of diesel components about 30% do not change much. With adding high temperature activated catalysts in the catalyst inlet, the contents of gas and gasoline components at the gas outlet increased, while those of diesel and heavy components decreased. When adding 60% of activated catalysts, the content of heavy components decreased to 18%.

Key words: petroleum, fluid catalytic cracking, stripping, chemical reaction, CFD

中图分类号:

TQ018

刘英杰, 杨基和, 蓝兴英, 高金森. RFCC化学汽提过程的模拟研究[J]. 化工学报, 2016, 67(8): 3244-3250.

LIU Yingjie, YANG Jihe, LAN Xingying, GAO Jinsen. Numerical study on RFCC chemical stripping process[J]. CIESC Journal, 2016, 67(8): 3244-3250.

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RFCC化学汽提过程的模拟研究

Numerical study on RFCC chemical stripping process

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