低压脱丙烷塔运行分析及应对措施  

ANALYSIS AND COUNTERMEASURES FOR OPERATION BOTTLENECKS OF LOW-PRESSURE DEPROPANIZER

作　　者：王俊斌 李中华 李磊[1] 康鸿才 马丽华 Wang Junbin;Li Zhonghua;Li Lei;Kang Hongcai;Ma Lihua(PetroChina Dushanzi Petrochemical Company,Dushanzi,Xinjiang,P.C.833699)

机构地区：[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

出　　处：《乙烯工业》2023年第4期32-35,I0001,共5页Ethylene Industry

摘　　要：介绍了独山子石化220 kt/a乙烯装置分离单元低压脱丙烷塔运行操作过程中出现的问题。通过对该塔物料组成分析,找出易产生聚合的组分,主要为丁二烯和环戊二烯,还有少量的苯乙烯,物料结垢造成塔釜液位计堵塞从而显示异常。针对低压脱丙烷塔操作中遇到的波动进行分析、探讨及危害识别,并制定出相对应的防范措施,确保了低压脱丙烷塔的长周期稳定运行。This paper introduces the problems in the operation of low-pressure depropanizer of the separation unit in the 220 kt/a ethylene plant of PetroChina Dushanzi Petrochemical Company.Through the analysis of the material composition in the tower,it is found that the components that easily polymerize are mainly butadiene and cyclopentadiene and a small amount of styrene,and the scaling will cause the blockage of the bottom level gauge,resulting in abnormal display.The fluctuations in the operation of the low-pressure depropanizer are analyzed and discussed,the hazards are identified,and some corresponding preventive measures are developed,so as to ensure the long-term stable operation of the low-pressure depropanizer.

关 键 词：低压脱丙烷塔 结焦 操作优化 

分 类 号：TQ221.211[化学工程—有机化工]