乙烯工业 ›› 2019, Vol. 31 ›› Issue (3): 28-30.

• 工业技术 • 上一篇    下一篇

乙烯装置低排放开工

彭志荣,刘  军,薛  峰,史云伟,董万军,张林涛   

  1. 中国石油四川石化有限责任公司,四川 彭州 611930
  • 收稿日期:2018-07-17 修回日期:2019-01-29 出版日期:2018-09-25 发布日期:2019-09-28
  • 作者简介:彭志荣,男,2006年毕业于兰州石化学院化工机械专业,主要从事乙烯生产工作,工程师。

Low-Emission Startup of Ethylene Plant

Peng Zhirong,Liu Jun,Xue Feng,Shi Yunwei,Dong Wanjun,Zhang Lintao   

  1. PetroChina Sichuan Petrochemical Company Limited, Pengzhou, Sichuan, P.C.611930

  • Received:2018-07-17 Revised:2019-01-29 Online:2018-09-25 Published:2019-09-28

摘要: 目前乙烯装置开工普遍采用有乙烯倒开工方案。先启动丙烯制冷压缩机和乙烯制冷压缩机,再启动裂解气压缩机并进行氮气运行。用氮气作为介质,乙烯和丙烯为冷剂对冷箱、脱甲烷塔等深冷系统进行预冷,同时引进乙烯、丙烯对乙烯精馏塔和丙烯精馏塔进行全回流运转。在深冷系统预冷完成后裂解气压缩机引进天然气提前进行分离系统预开车,打通从裂解气压缩机到冷箱、脱甲烷塔、脱乙烷塔、高压脱丙烷塔及碳二加氢反应器的整个流程。

关键词: 乙烯 ,  , 开工 ,  , 低排放

Abstract:

At present, ethylene plant is generally started up in the reverse sequence. Propylene refrigeration compressor and ethylene refrigeration compressor are started first, and then cracking gas compressor is started and nitrogen is introduced. Nitrogen is used as the medium and ethylene and propylene are used as the cold agent to precool the cryogenic systems such as cold box and demethanizer, and ethylene and propylene are introduced to achieve the total reflux operation of ethylene rectification column and propylene rectification column. After the precooling of cryogenic systems, natural gas is introduced into the cracking gas compressor to pre-start the separation system in advance, so as to get through the whole process from cracking gas compressor to cold box, demethanizer, deethanizer, high-pressure depropanizer and Chydrogenation reactor.

Key words: ethylene, startup, low-emission