乙烯工业 ›› 2020, Vol. 32 ›› Issue (3): 13-15.

• 工业技术 • 上一篇    下一篇

脱乙烷塔系统存在的问题及优化

黄登胜,史长洪,马  俊,蒋晓勇   

  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:2019-12-19 修回日期:2020-07-28 出版日期:2020-09-25 发布日期:2020-09-29
  • 作者简介:黄登胜,男,2003年毕业于承德石油高等专科学校化学工程与工艺专业,主要从事乙烯生产工作,助理工程师。

Problems in Deethanizer System and the Optimization

Huang Dengsheng, Shi Changhong, Ma Jun,Jiang Xiaoyong   

  1. PetroChina Dushanzi Petrochemical Company, Dushanzi, Xinjiang, P.C.833699
  • Received:2019-12-19 Revised:2020-07-28 Online:2020-09-25 Published:2020-09-29

摘要: 针对独山子2号乙烯装置脱乙烷塔出现的塔顶物流丙烯含量高,塔釜液在线分析乙烷超标,对脱乙烷塔进料、塔釜出料,前向预切割系统的设计数据和运行数据进行分析,得出2号预切割塔进料温度高是造成脱乙烷塔塔顶温度高、丙烯损失量大的原因,通过技改增加旁路调节,降低了脱乙烷塔进料量和进料温度,提高了脱乙烷塔精馏效果,降低了脱乙烷塔顶碳三损失和釜液中碳二损失。

关键词: 乙烯装置 ,  , 预切割塔 ,  , 脱乙烷塔  , 丙烯损失  , 优化

Abstract:

In view of the high propylene content of overhead stream and the over high ethane in tower bottoms of deethanizer in the No.2 ethylene plant in Dushanzi, this paper analyzes the design data and operation data of deethanizer feed, tower bottom product and front-end predistillation system, and concludes that the high temperature of feed in the No.2 predistillation tower is the cause of the high overhead temperature and high propylene loss of deethanizer. Through technical transformation, by-pass regulation is installed, the quantity and temperature of the feed to deethanizer are reduced, the distillation effect of deethanizer is improved, and the loss of overhead C3 and the loss of C2 in tower bottoms are reduced.

Key words: ethylene plant, predistillation tower, deethanizer, propylene loss, optimization