等温列管式碳二加氢反应器开车风险辨识与控制

乙烯工业 ›› 2021, Vol. 33 ›› Issue (4): 33-36.

等温列管式碳二加氢反应器开车风险辨识与控制

梁多，杜新民，张伟，李兆龙，赵万庆

中国石油天然气股份有限公司独山子石化分公司，新疆独山子 833699

收稿日期:2021-01-30 修回日期:2021-09-10 出版日期:2021-12-25 发布日期:2021-12-27
作者简介:梁多，男，2012年毕业于四川大学化学工程与工艺专业，现主要从事乙烯生产运行工作，工程师。

Risk Identification and Control during Start-Up of Isothermal Tubular C₂ Hydrogenation Reactor

Liang Duo, Du Xinmin, Zhang Wei, Li Zhaolong, Zhao Wanqing

PetroChina Dushanzi Petrochemical Company, Dushanzi, Xinjiang, P.C.833699

Received:2021-01-30 Revised:2021-09-10 Online:2021-12-25 Published:2021-12-27

摘要/Abstract

摘要：

独山子1 000 kt/a乙烯装置采用前脱乙烷前加氢工艺，碳二加氢过程选用等温列管式反应器，该反应器具有操作周期和寿命都较长，催化剂选择性好，基本不产生或很少产生绿油等优势，但存在开车时间长、难度大的操作特点。经过装置4次检修后的新剂开车，辨识出新剂开车过程中存在的4个风险，即反应器充压填充操作、甲醇沸腾控制、CO浓度控制、出口乙炔合格操作调整。根据已辨识出的风险，落实消减措施、固化开车操作模式，确保碳二加氢反应开车操作安全、高效，减少乙烯不合格品的产生。

关键词: 乙烯装置 ')">乙烯装置 , 等温列管式 , 碳二加氢反应器 ')"> 碳二加氢反应器 , 操作调整')">操作调整

Abstract:

The 1,000 kt/a ethylene plant in Dushanzi adopts front-end deethanization and front-end hydrogenation process, and isothermal tubular reactor is selected for C₂ hydrogenation process. The reactor has the advantages of long operation cycle and service life, good catalyst selectivity, and basically no or little green oil produced, but it has the operation characteristics of long start-up time and great difficulty. The plant was started up with new catalyst after four rounds of overhaul, and four risks existed in the start-up with new catalyst were identified including reactor pressurization and filling operation, methanol boiling control, CO concentration control and operation adjustment for on-spec acetylene at outlet. According to the identified risks, some mitigation measures were implemented and the start-up operation mode was fixed to ensure the safety and efficiency during the start-up of C₂ hydrogenation reactor and reduce the production of off-spec ethylene products.

Key words: ethylene plant, isothermal tubular, C₂ hydrogenation reactor, operation adjustment

梁多, 杜新民, 张伟, 李兆龙, 赵万庆. 等温列管式碳二加氢反应器开车风险辨识与控制[J]. 乙烯工业, 2021, 33(4): 33-36.

Liang Duo, Du Xinmin, Zhang Wei, Li Zhaolong, Zhao Wanqing. Risk Identification and Control during Start-Up of Isothermal Tubular C₂ Hydrogenation Reactor[J]. Ethylene Industry, 2021, 33(4): 33-36.