锅炉中硫酸盐和硅酸盐垢的化学清洗  

Chemical cleaning of sulfate and silicate scale in boiler

作　　者：张敏[1] 吴晋英[1] 黄长山[1] 徐会武[1] 薛冕[1] 陈敏[1] 张晓光 ZHANG Min;WU Jin-ying;HUANG Chang-shan;XU Hui-wu;XUE Mian;CHEN Min;ZHANG Xiao-guang(Henan Academy of Science and Energy Research Institute Co.,Ltd.,Zhengzhou 450008,China)

机构地区：[1]河南省科学院能源研究所有限公司,河南郑州450008

出　　处：《应用化工》2018年第10期2296-2299,共4页Applied Chemical Industry

基　　金：河南省杰出人才项目(144200510025)

摘　　要：针对锅炉腔内壁上生成的碳酸盐、硫酸盐和硅酸盐等混合水垢,采用碱煮转化+酸洗相结合的方式进行化学清洗。结果表明,在50℃温度下,将混合水垢放入含量为0. 3%碳酸钠和1. 0%磷酸三钠的碱煮液中转化24 h;水冲洗后,用浓度0. 5 mol/L的锅炉除垢剂进行酸洗,水垢易被清除,并可得到满意的清洗效果,同时缩短了清洗时间,降低了清洗成本。Aimed at the mixed scale of carbonate,sulfate and silicate formed on the inner wall of the boiler chamber,the chemical cleaning was carried out by the combination of alkali boiling and conversion acid pickling.The results showed that:at 50℃,the mixed scale was put into the alkaline cooking solution containing 0.3%,sodium carbonate and 1.0%,trisodium phosphate for 24 h.After water washing,the scale was easily removed and a satisfactory cleaning effect was obtained by using the boiler scale remover with concentration of 0.5 mol/L.At the same time,the cleaning time is shortened and the cleaning cost is reduced.

关 键 词：工业锅炉 硫酸盐 硅酸盐 碳酸钠 磷酸三钠 碱煮转化 酸洗 

分 类 号：TQ09[化学工程] TQ170