裂解气压缩机结焦危害与分析  

HARM AND ANALYSIS OF COKING IN CRACKING GAS COMPRESSOR

作　　者：李云龙[1] 周磊[1] 刘嘉[1] Li Yunlong;Zhou Lei;Liu Jia(PetroChina Jilin Petrochemical Company,Jilin,Jilin,P.C.132021)

机构地区：[1]中国石油天然气股份有限公司吉林石化分公司,吉林吉林132021

出　　处：《乙烯工业》2022年第3期36-38,I0001,I0002,共5页Ethylene Industry

摘　　要：吉林石化公司150 kt/a乙烯装置受原料结构变化影响,造成裂解气压缩机N因子增长,排出管道和机腔内结焦,二段排出压力升高及裂解气压缩机转速和振动值超标等问题。通过注入分散型阻垢剂,维持一段时间的运行,但随着结焦问题的恶化,装置被迫停车检修。通过研究聚合机理,优化裂解原料和控制压缩机段间温度是防止聚合的关键。Affected by the changes in raw material structure,the 150 kt/a ethylene plant at PetroChina Jilin Petrochemical Company had problems such as N factor increase of cracking gas compressor,coking in discharge line and cavity,increased discharge pressure at the second stage and over high speed and vibration of cracking gas compressor.By injecting dispersed scale inhibitor,the operation could be maintained for a period of time.However,with the worsening of coking,the unit was forced to be shut down for maintenance.By studying the polymerization mechanism,this paper puts forward that the optimization of cracking raw materials and the control of compressor inter-stage temperature are the key to prevent polymerization.

关 键 词：裂解气压缩机 结焦 裂解原料 

分 类 号：TQ221.211[化学工程—有机化工]