循环冷却水硅垢的成因及预防.pdfVIP

第47卷第3期 应 用 化 工 Vol.47 No.3 2018年3月 Applied Chemical Industry Mar.2018 循环冷却水硅垢的成因及预防 1 2 1 1 牛犇 ,徐一 ,刘通 ,黄河雨 (1.武汉大学 动力与机械学院,湖北 武汉 430072;2.中南电力设计院,湖北 武汉 430072) 摘 要:论述了硅垢的成因及影响因素,总结了石灰软化法、混凝法、超滤法、电絮凝法等近年来国内外常用的除硅 方法,分析了不同方法的除硅效果及适用条件,同时介绍了硅垢阻垢剂的发展与应用。 结合循环冷却水实际运行 情况,提出了补充水预处理、阻垢分散剂添加、旁流处理等措施,并指出了循环冷却水处理未来的发展方向。 关键词:循环冷却水;硅垢;除硅方法;阻垢剂 + 中图分类号:TQ085 .4 文献标识码:A 文章编号:1671-3206(2018)03-0554-05 Formation mechanism and prevention of silica scale in cooling water systems 1 2 1 1 NIUBen ,XU Yi ,LIU Tong ,HUANGHe-yu (1.School of Power and Mechanical Engineering,Wuhan University,Wuhan430072,China; 2.Central Southern China Electric Power Design Institute,Wuhan430072,China) Abstract:The mechanismof silicascaleformationincoolingwatersystemswasdiscussedandtheremoval methods of silica,such aslimestone-concrete treatment,coagulation,ultrafiltration,electrocoagulation,etc, weremainlyintroduced.Inaddition,theeffectsandconditionsof differentprocesseswereanalyzedandthe development and applications of silica scale inhibitor were presented.Based on the actual operation,the paper proposed the prevention measures including water pretreatment,the addition of inhibitor and the side flow treatment.At the last,the future direction of cooling water treatment was pointed out. Key words:cooling water systems;silica scale;silica removal;scale inhibitor [1] 热交换器的表面一般会有垢的生成 。 例如