提高碳二后加氢反应选择性的优化措施

乙烯工业 ›› 2024, Vol. 36 ›› Issue (4): 27-30.

提高碳二后加氢反应选择性的优化措施

张祜，王文，黄伯维，胡志刚，肯吉别克·夏木西

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:2023-12-20 修回日期:2024-07-15 出版日期:2024-12-25 发布日期:2025-01-03
作者简介:张祜，男， 2008年毕业于西南石油大学化学工程与工艺专业，主要从事烯烃生产运行管理工作，高级技师，值班长。

Optimization Measures for Improving Selectivity of Back-end C₂ Hydrogenation Reaction

Zhang Hu, Wang Wen, Huang Bowei, Hu Zhigang, Kenjibieke•Xiamuxi

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

Received:2023-12-20 Revised:2024-07-15 Online:2024-12-25 Published:2025-01-03

摘要/Abstract

摘要：

中国石油独山子石化分公司220 kt/a乙烯装置碳二加氢反应器(R-401C/D)2022年11月8日切入运行，在生产运行过程中反应器出口乙烯增量不稳定。利用产品收率分析软件，每4 h提取1次生产数据，优化裂解深度控制反应器入口乙炔含量。投用聚合级乙烯外送EVA流程，保证聚合级乙烯外送流量维持在26 t/h，从而平衡系统冷量，控制脱乙烷塔顶温。通过脱除绿油技改流程，定期脱除反应器一段绿油，减少进入二段床层绿油量，提高了催化剂的活性和反应器出口乙烯增量。2023年反应器出口平均乙烯增量为301 kg/h，较技术协议平均增加了165 kg/h。

关键词: 碳二加氢反应器 , 催化剂活性 , 乙烯增量 , 优化措施

Abstract:

The C₂ hydrogenation reactor (R-401C/D) in the 220 kt/a ethylene plant of PetroChina Dushanzi Petrochemical Company was put into operation on November 8, 2022, and the ethylene increment at the reactor outlet was unstable during production. Product yield analysis software was used to extract production data every 4 hours to optimize the cracking depth and control the acetylene content at the reactor inlet. The EVA process of polymer grade ethylene was used to ensure that the flow rate of polymer grade ethylene was maintained at 26 t/h, so as to balance the cooling capacity of the system and control the overhead temperature of the deethanizer. The green oil in the first stage of reactor was removed regularly, and the amount of green oil entering the second stage bed was reduced, thus improving the activity of catalysts and the ethylene increment at the reactor outlet. In 2023, the average ethylene increment at the reactor outlet was 301 kg/h, with an average increase of 165 kg/h compared with that in the technical agreement.

Key words: C₂ hydrogenation reactor, catalyst activity, ethylene increment, optimization measure

张祜, 王文, 黄伯维, 胡志刚, 肯吉别克·夏木西. 提高碳二后加氢反应选择性的优化措施[J]. 乙烯工业, 2024, 36(4): 27-30.

Zhang Hu, Wang Wen, Huang Bowei, Hu Zhigang, Kenjibieke•Xiamuxi. Optimization Measures for Improving Selectivity of Back-end C₂ Hydrogenation Reaction[J]. Ethylene Industry, 2024, 36(4): 27-30.

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