摘要
在制盐及废水处理的蒸发结晶工艺系统(MVR)中,由于蒸汽压缩机工况区较窄,容易出现液击、频繁喘振、振动值超过极限导致跳车等状况。为解决这些问题,本文在DCS上通过控制蒸汽压缩机出口压力和温度、设置防喘振预警控制程序及喘振画面报警等措施,以及增加回流管线等方式,在蒸汽压缩机喘振情况出现时,DCS通过喘振预警程序及喘振报警画面等方式发出信号,当喘振信号出现时能自动开启喘振阀门,或以人工手动开启喘振阀门,避免了蒸汽压缩机液击和喘振等状况的出现。
In the evaporation crystallization process system(MVR)of salt production and wastewater treatment,due to the narrow working area of the steam compressor,it was easy to have problems of interlock protection and automatic control,such as liquid hammer,frequent surge,over large vibration value,etc. measures such as controlling the pressure and temperature at the outlet of the compressor,setting the anti surge early warning control program,surge screen alarm,and increasing the return pipeline were adopted on DCS. When compressor surge occured,DCS could automatically open surge valve by means of surge warning program or manually open surge valve by means of surge alarm screen,so as to avoid compressor surge and liquid hammer.
作者
黄光明
饶佳
钟志辉
HUANG Guangming;RAO Jia;ZHONG Zhihui(China CEC Engineering Corporation,Changsha,Hu’nan Province,410004)
出处
《中国造纸》
CAS
北大核心
2020年第4期56-61,共6页
China Pulp & Paper
关键词
蒸汽压缩机
喘振
性能曲线
预警
振动
compressor
surge
performance curve
warning
vibration
