| 催化裂化再生器树枝状主风分布管磨损的气相流场分析 |
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| 引用本文： | 万古军,魏耀东,时铭显.催化裂化再生器树枝状主风分布管磨损的气相流场分析[J].炼油技术与工程,2006,36(3):21-24. |
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| 作者姓名： | 万古军 魏耀东 时铭显 |
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| 作者单位： | 中国石油大学(北京)化工学院,北京市,102200 |
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| 基金项目： | 中国科学院资助项目，中国石油化工股份有限公司资助项目 |
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| 摘 要： | 通过对催化裂化装置再生器树枝状主风分布管内流场的数值模拟,分析了树枝状主风分布管磨损的机理.再生器树枝状主风分布管的磨损一般发生在分支管内部和喷嘴内壁,属于气固两相流的冲蚀磨损.流场计算表明,沿管程各喷嘴的出流流量不均匀,压力降也不相等,造成分支管外部的催化剂颗粒倒流至分支管内部从下游的喷嘴流出,进而导致分支管内部和喷嘴内壁的冲蚀磨损.
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| 关 键 词： | 再生器 主风分布管 气相流场 磨损 催化裂化装置 |
| 收稿时间： | 2005-12-22 |
| 修稿时间： | 2006-01-20 |
ANALYSIS OF GAS-PHASE FLOW FIELD FOR EROSION OF FCC DENDRITIC MAIN AIR PIPE DISTRIBUTOR |
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| Wan Gujun,Wei Yaodong,Shi Mingxian.ANALYSIS OF GAS-PHASE FLOW FIELD FOR EROSION OF FCC DENDRITIC MAIN AIR PIPE DISTRIBUTOR[J].Petroleum Refinery Engineering,2006,36(3):21-24. |
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| Authors: | Wan Gujun Wei Yaodong Shi Mingxian |
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| Affiliation: | Chemical Engineering College of China University of Petroleum ( Beijing 102200, China |
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| Abstract: | The erosion mechanisms of dendritic main air distributor of FCC unit is analyzed by numerical simulation of internal flow field of distributor. The erosion, which is caused by gas-solid flow impingement, is usually found in the internal wall of branch tubes and nozzles. The flow field calculation shows an uneven outlet flow and different pressure drops of the nozzle along the branch tubes. This leads to the back flow of catalyst particles into the branch tubes and come out in the down-stream nozzles. Therefore, the impingement erosion of internal wall of branch tubes and nozzles is the result. |
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| Keywords: | regenerator main distributor gas-phase flow field erosion FCC unit |
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