“石膏雨”生成原因及治理措施研究

Origin and Solution of the "Gypsum Rain" Problem of WFGD

对"石膏雨"成因素进行了分析,WFGD取消GGH致使排烟温度降低是"石膏雨"产生的主因,另外,还包括设备设计、运行及外界环境等。基于此,归纳了"石膏雨"治理的主要措施:WFGD的设计运行优化、尾部烟道设计优化及增设湿式静电除尘器等。

In this paper,the factors affecting the formation of ＂ gypsum rain＂ were analyzed. The main reason for ＂ gypsum rain＂ was canceling GGH in the WFGD system which lowered exhaust temperature,and other influence factors included equipment design,operation parameters and external environment. Three solutions of design and operation optimization of dust removal equipment and WFGD system,design optimization of tail flue gas duct,and additional WESP were proposed.