裂解汽油加氢二段反应器急冷剂管道开裂原因分析及对策

乙烯工业 ›› 2023, Vol. 35 ›› Issue (1): 38-41.

裂解汽油加氢二段反应器急冷剂管道开裂原因分析及对策

谢亮1，董万军1,胡菊香2

1 中国石油四川石化有限责任公司，四川成都 611930； 2 四川蜀道装备科技股份有限公司，四川成都 611730

收稿日期:2022-03-30 修回日期:2023-01-05 出版日期:2023-03-25 发布日期:2023-03-27
作者简介:谢亮，男，2015年毕业于中国石油大学（华东）化学工程与工艺专业，主要从事汽油加氢装置生产工作，工程师。

Cause Analysis and Countermeasures for Cracking of Quench Pipeline in Second-stage Reactor of Pyrolysis Gasoline Hydrogenation #br#

Xie Liang¹, Dong Wanjun¹，Hu Juxiang²

1.PetroChina Sichuan Petrochemical Company Limited, Chengdu, Sichuan, P.C.611930;
2. Sichuan Shudao Equipment &Technology Co., Ltd., Chengdu, Sichuan, P.C.611730

Received:2022-03-30 Revised:2023-01-05 Online:2023-03-25 Published:2023-03-27

摘要/Abstract

摘要：

对裂解汽油加氢二段反应器急冷剂管道因化学腐蚀和应力腐蚀引起的开裂进行了溯源分析。通过对1号外管宏观及低倍金相检验、样管化学成分分析、样管显微组织分析、电镜观察及能谱分析等方式进行综合分析急冷剂管道开裂原因。确定氯离子应力腐蚀开裂起主导作用，焊缝及热影响区敏化加速了开裂进程，采取相应对策有效地防止管道开裂发生，为乙烯裂解汽油加氢装置长周期安全稳定运行提供了保障。

关键词: 裂解汽油 , 二段反应器 , 急冷剂管道 , 开裂分析

Abstract:

The traceability analysis of the cracking of quench pipeline in second-stage reactor of pyrolysis gasoline hydrogenation caused by chemical corrosion and stress corrosion was carried out. Through the macroscopic and low-magnification metallographic examination of the 1# outer tube, the chemical composition analysis of the sample tube, the microstructure analysis of the sample tube, the electron microscope observation and the energy spectrum analysis, the reasons for the cracking of quench pipeline were comprehensively analyzed. It was determined that chloride ion stress corrosion cracking played a leading role, and the sensitization of welds and heat-affected zone accelerated the cracking process. Corresponding countermeasures were taken to effectively prevent the cracking of pipelines, which provides a guarantee for the long-term, safe and stable operation of pyrolysis gasoline hydrogenation unit.

Key words: , pyrolysis gasoline, second-stage reactor, quench pipeline, cracking analysis

谢亮, 董万军, 胡菊香.

裂解汽油加氢二段反应器急冷剂管道开裂原因分析及对策 [J]. 乙烯工业, 2023, 35(1): 38-41.

Xie Liang, Dong Wanjun, Hu Juxiang.

Cause Analysis and Countermeasures for Cracking of Quench Pipeline in Second-stage Reactor of Pyrolysis Gasoline Hydrogenation #br#[J]. Ethylene Industry, 2023, 35(1): 38-41.