湿法磷酸萃取过滤中阻垢机理的研究  

Research on Scale Resistance in the Production of Wet Process Phosphoric Acid

作　　者：文忠勇[1] 段洁[1] 唐建华[1,2] 

机构地区：[1]四川大学化学工程学院,成都610065 [2]成都川科化工有限公司,成都610065

出　　处：《四川化工》2009年第3期25-27,共3页Sichuan Chemical Industry

摘　　要：结垢问题对湿法磷酸生产过程有着十分严重的影响,本文从结垢主要成分氟硅酸钾(钠)结晶形成的机理研究入手,考虑寻求通过添加外加物质来抑制其结晶形成。通过实验发现M和N两类正电荷离子具有较明显的阻垢效应。在适当的添加量情况下,添加M和N两类离子的阻垢率达到了80.6%。During the production of wet--process phosphoric acid , there is a common problem which is that scale deposition blocks up the equipment. It is very important to solve the scale problem. Using M and N ion as an additive , the authors made a research in its effect on the crystallization of sodium fluorosilicate and potassium fluorosilicate and found that the rate of preventing scale is up to 80. 6 %.

关 键 词：湿法磷酸 氟硅酸钾(钠) 结垢 

分 类 号：TQ126.35[化学工程—无机化工]