摘要
茂名2号乙烯装置脱丁烷塔长时间运行,进料中的不饱和烯烃组分发生聚合结垢堵塞塔盘,降低了脱丁烷塔的分离效果,导致脱丁烷塔塔釜中碳四损失升高。针对脱丁烷塔碳四损失严重的问题,利用闲置的2号裂解汽油加氢装置后脱戊烷塔对其进行了流程改造,将脱丁烷塔与后脱戊烷塔串联操作,脱丁烷塔塔釜的物料采出作为脱戊烷塔进料,进一步分离回收碳四产品,大幅降低了高附加值产品碳四的损失率,增加经济效益。
The debutanizer of No.2 cracking unit of the ethylene plant in Maoming had been operated for a long time.The unsaturated olefins in the feed polymerized at high temperature and blocked the trays,reducing the separation effect of the debutanizer.As a result,the loss rate of C 4 in the bottom of debutanizer increased.To solve the high C 4 loss in the debutanizer,the process flow was revamped by utilizing the idle post depentanizer of the No.2 cracking gasoline hydrogenation unit.The debutanizer and the post depentanizer were operated in series,and the material from the bottom of the debutanizer was used as the feed to the depentanizer to further separate and recover C 4,thus greatly reducing the loss rate of high value-added C 4 products and improving the economic benefit.
作者
刘茂
吴金辉
吴儒毅
Liu Mao;Wu Jinhui;Wu Ruyi(SINOPEC Maoming Company,Maoming,Guangdong,P.C.525000)
出处
《乙烯工业》
CAS
2021年第1期23-28,I0001,共7页
Ethylene Industry
关键词
后脱戊烷塔改造
塔盘堵塞
碳四收率
revamping of post depentanizer
tray blocking
C 4 yield
作者简介
刘茂,男,2003年毕业于茂名学院石油化工工艺专业,主要从事乙烯装置生产和技术管理工作,工程师。
