烟气湿法脱硫“石膏雨”产生机理及控制措施研究

Study on the Mechanism and Control Measures of "Gypsum Rain" in WFGD

"石膏雨"现象是石灰石-石膏湿法烟气脱硫工艺存在的普遍现象,会对周边企业和群众的生产生活造成影响。本文分析了烟气脱硫系统运转过程中,产生石膏雨的影响因素,提出了加强污染源头控制,提升用煤品质,加强除雾器选型,超低排放技术改造等控制措施。

The ph enomenon of ＂Gypsum Rain＂ is common in the desulfurization process of limestone-Gypsum wet process, which affects the production and living of surrounding industries and habitants. This paper reviews the mechanism of Gypsum Rain, analyzes the influencing factors of gypsum rain, and puts forward to strengthening the control of pollution source as well as improving coal quality, the choice of demister, ultra low emission technology and other control measures.