乙烯工业 ›› 2019, Vol. 31 ›› Issue (3): 13-17.

• 工业技术 • 上一篇    下一篇

乙烯装置气相干燥器分子筛的在线更换

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童雄师,朱俊桦,陈锦丰   

  1. 中国石油化工股份有限公司茂名分公司,广东 茂名 525000
  • 收稿日期:2019-05-09 出版日期:2018-09-25 发布日期:2019-09-28
  • 作者简介:童雄师,男,2016年毕业于中国石油大学(北京)化学工程与技术专业,硕士,主要从事乙烯装置生产工作,工程师。

Online Replacement of Molecular Sieves of Vapor Dryer in Ethylene Plant

Tong Xiongshi, Zhu Junhua, Chen Jinfeng   

  1. SINOPEC Maoming Company, Maoming, Guangdong, P.C.525000

  • Received:2019-05-09 Online:2018-09-25 Published:2019-09-28

摘要: 介绍了中国石油化工股份有限公司茂名分公司1号乙烯装置气相干燥器(V-370A)在长周期运行中出现出口裂解气水分含量超标、压差高的问题。经优化操作,将V-370A再生的恒温时间从24 h延长到6 h和缩短备用干燥器(V-370B)的再生时间等举措,可以在一定时期内维持装置平稳运行。通过在线更换分子筛,彻底解决了因分子筛粉化所导致的干燥失效问题。结合床层各部位分子筛的粉化程度,分析了分子筛粉化的原因和粉化后对干燥效果的影响,并提出相应的改进措施。

关键词: 干燥器 ,  , 分子筛 ,  , 粉化 ,  , 在线更换

Abstract:

This paper discusses the problems in the long-term operation of vapor dryer in the No. 1 ethylene plant at SINOPEC Maoming Company including the overhigh water content of outlet cracking gas and the high pressure difference. After taking some optimization measures such as extending the constant temperature time of regeneration of the dryer V-370A from 2~4 hours to 6 hours and shortening the regeneration time of the standby dryer V-370B, the smooth operation of the plant could be maintained for a certain period of time. By replacing the molecular sieves online, the problem of drying failure caused by molecular sieve pulverization could be completely solved. According to the degree of pulverization of molecular sieves in various parts of the bed, the causes of molecular sieve pulverization and the impact of pulverization on drying effect are analyzed, and corresponding improvement measures are put forward.

Key words: dryer, molecular sieve, pulverization, online replacement