摘要
某石化公司二期100万t/a乙烯装置原始开工后,急冷水塔裂解汽油带水严重,急冷水持续乳化,急冷系统波动大。经排除检查,确定现场返急冷水塔的气相管线接口配管位置在急冷水侧油水界位以下导致油水分离效果变差,尤其在分离系统干燥器通过气相线向急冷水塔泄压时,对油水界位与汽油槽液位影响尤为严重。通过带压开孔作业,将气相返回线改至急冷水塔裂解气进料管线,解决了汽油带水问题,急冷系统平稳运行。
Since the initial startup of the 1 MMt/a ethylene plant in the company,the water entrainment of pyrolysis gasoline in the quench water tower was serious,leading to continuous emulsification of quench water and large fluctuation of quench water system operation.After troubleshooting inspection,it was found that the location of the gas pipeline interface piping of the on-site quenching water tower was below the oil-water boundary on the quench water side,resulting in poor oil-water separation,especially when the dryers of the separation system discharged pressure to the quench water tower through the gas phase line,the impact on the oil-water boundary and the gasoline tank level was particularly serious.Through the hot-tapping operation,the gas return line was changed to the pyrolysis gas feed line of the quench water tower,which solved the problem of gasoline with entrained water and the quench system resumed smooth operation.
作者
吕升辉
LV Shenghui(Sinochem Quanzhou Petrochemical Co.,Ltd,Quanzhou Fujian 362100,China)
出处
《石油石化绿色低碳》
2022年第1期43-46,共4页
Green Petroleum & Petrochemicals
关键词
急冷系统
裂解汽油带水
急冷水乳化
油水分离
技术改造
quench system
pyrolysis gasoline carrying water
quench water emulsification
oil-water separation
technical improvement
