乙烯工业 ›› 2020, Vol. 32 ›› Issue (4): 25-27.

• 工业技术 • 上一篇    下一篇

乙烯精馏塔压差高原因分析及解决措施

  乐,王  强,王曜宸,张校禄,李兆龙   

  1. 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:2020-04-07 修回日期:2020-08-15 出版日期:2020-12-25 发布日期:2021-01-04
  • 作者简介:张乐,男,2005年毕业于兰州交通大学化学工程与工艺专业,主要从事乙烯装置工艺技术管理工作,工艺主管,高级工程师。

Cause Analysis of High Pressure Difference of Ethylene Distillation Tower in Ethylene Plant and Its Solution

Zhang Le, Wang Qiang, Wang Yaochen, Zhang Xiaolu, Li Zhaolong   

  1. PetroChina Dushanzi Petrochemical Company, Dushanzi, Xinjiang, P.C.833699
  • Received:2020-04-07 Revised:2020-08-15 Online:2020-12-25 Published:2021-01-04

摘要:

独山子1 000 kt/a乙烯装置乙烯精馏塔压差超出设计操作值,进料负荷降低,成为装置整体加工负荷提高的制约点。经分析,原因为在碳二加氢反应器中反应生成的绿油进入导致塔盘堵塞,通过在合适的位置注入甲醇成功清除堵塞,且操作过程在短时间内注入较多的甲醇比在长时间内注入少量的甲醇更有效。

关键词: 乙烯精馏塔 ,  , 压差高 ,  , 绿油 ,  , 注甲醇

Abstract:

The pressure difference indicated by the differential gauge of ethylene distillation tower in the 1000 kt/a ethylene plant in Dushanzi exceeded the design operating value, and the feed load was reduced, restricting the increase of overall processing load of the ethylene plant. Through analysis, it was found that the reason for this problem was the plugging of tray caused by the entrance of green oil generated in C2 hydrogenation reactor. The plugging was removed successfully by injecting methanol into the proper position, and it was more effective to inject a large amount of methanol within a short period of time than injecting a small amount of methanol within a long period of time.

Key words:  , ethylene distillation tower;high pressure difference;green oil;methanol injection