摘要
国内某800 kt/a乙烯装置裂解气压缩机为国产化三缸五段大型机组,设计有"三返一"、"四返四"、"五返五"防喘振系统。运行3年来,一直存在着"三返一"防喘振系统操作安全裕度低、"四返四"防喘振阀门动作易导致压缩机跳车、"五返五"防喘振阀门动作导致碳二加氢反应器跳车等问题。2016年,利用装置大检修的机会,对裂解气压缩机机组控制系统进行了优化,成功解决了上述问题,并提高了自动化程度,达到了节能降耗的目的,稳定了机组的运行。
The cracking gas compressor of an 800 kt/a ethylene plant in China is large localized compressor unit with three cylinders and five stages,and is designed with three stages of backflow to one-stage suction,four stages of backflow to four-stage suction and five stages of backflow to five-stage suction to prevent the surge. In three years' operation, there were problems including the operation safety margin of three-stage anti-surge system is low,the action of four-stage anti-surge valve easily leads to compressor trip,and the action of five-stage anti-surge valve easily leads to C_2 front-end hydrogenation reactor trip. During the overhaul in 2016, the control system of the cracking gas compressor unit was optimized, the above-mentioned problems were solved successfully,the degree of automation was improved,energy saving and consumption reduction were achieved,and the operation of the compressor unit was stabilized.
出处
《乙烯工业》
CAS
2018年第3期56-59,共4页
Ethylene Industry
关键词
乙烯装置
裂解气压缩机
防喘振
优化
ethylene plant
cracking gas compressor
anti-surge
optimization
