摘要
中国石油天然气股份有限公司独山子石化分公司220 kt/a乙烯装置裂解气压缩机开车运行3 a后,其高压缸径向轴承推力瓦TE12820/21轴瓦温度达到120℃/121℃(报警值120℃),接近压缩机联锁值125℃。对这一现象进行了原因查找及分析,认为裂解气压缩机叶轮及流道结焦加剧造成轴瓦温度上涨的主要原因。采取调整润滑油供油温度、加大注水量、调整助剂注入量及增加润滑油过滤系统等措施,取得了较好的效果,TE12820/21轴瓦温度由120℃/121℃降低至113℃/110℃,保证裂解气压缩机运行平稳,避免了因轴瓦温度异常导致全装置非计划停工,乃至全厂停工,大幅减少了损失。
After 3 years’operation of the cracking gas compressor in the 220 kt/a ethylene plant at PetroChina Dushanzi Petrochemical Company,the bearing shell temperature of the thrust bearings TE12820/21 in high pressure cylinder reached 120℃/121℃(120℃is the alarm value)and approached 125℃,which is the interlock value of compressor.The causes of this phenomenon were analyzed,and the severe coking of the impeller and flow channel of cracking gas compressor was identified as the main reason for the temperature rise of bearing shell.Some measures including adjusting the lube oil temperature,increasing the water injection rate,adjusting the injection rate of additives and installing lube oil filtration system were taken,and good effect were achieved.The bearing shell temperature of TE12820/21 dropped from 120℃/121℃to 113℃/110℃,ensuring the smooth operation of cracking gas compressor,avoiding the unplanned shutdown of the ethylene plant and even the shutdown of the whole plant as a result of abnormal bearing shell temperature,and remarkably reducing losses.
作者
胡恒伟
薛新超
王晨宇
游笑辉
张铭灿
Hu Hengwei;Xue Xinchao;Wang Chenyu;You Xiaohui;Zhang Mingcan(PetroChina Dushanzi Petrochemical Company,Dushanzi,Xinjiang,P.C.833699)
出处
《乙烯工业》
CAS
2020年第2期51-56,I0002,共7页
Ethylene Industry
关键词
裂解气压缩机
轴瓦温度升高
原因分析
cracking gas compressor
temperature rise of bearing shell
cause analysis
