无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2014, Vol. 46 ›› Issue (1): 56-.

• 论文 • 上一篇    下一篇

溶剂萃取法净化萃余酸制磷酸二氢钾

尤彩霞1,杨政发2,王贵珍1,周骏宏2,孙 娜1   

  1. 1.河北化工医药职业技术学院化学与环境工程系,河北石家庄 050026;2.黔南民族师范学院化学与化工系
  • 出版日期:2014-01-10 发布日期:2014-01-13

Preparation of potassium dihydrogen phosphate with raffinate from phosphoric acid purification by extraction method

You Caixia1,Yang Zhengfa2,Wang Guizhen1,Zhou Junhong2,Sun Na1   

  1. 1.Department of Chemical and Environmental Engineering,Hebei Chemical & Pharmaceutical Vocational Technology College, Shijiazhuang 050026,China;2.Department  of Chemistry and Chemical Engineering,Qiannan Normal College for Nationalities
  • Published:2014-01-10 Online:2014-01-13

摘要:  研究了以氯化钾和湿法磷酸净化后的萃余酸为原料,利用正丁醇为萃取剂回收萃余酸中湿法磷酸制备磷酸二氢钾的新方法。研究了正丁醇含水量、萃取时间、萃取温度及萃余酸用量等因素对产品产量的影响,确定了适宜的工艺条件。实验结果表明,优化的工艺条件为:m(萃余酸)∶V(正丁醇)为127.4 g/L、m(水)∶V(正丁醇)为95 g/L、温度为30 ℃、萃取时间为60 min、m(氯化钾)∶V(正丁醇)为26.075 g/L。本研究提供了一种回收利用萃余酸的经济、简单的方法。

关键词: 磷酸二氢钾, 正丁醇, 萃取法, 萃余酸

Abstract: A new method for preparation of potassium dihydrogen phosphate from potassium chloride and the raffinate from phosphoric acid purification by extraction method with butyl alcohol as extractant was studied.The influences of the butyl alcohol′s water content,extraction time,extraction temperature,and amounts of the raffinate on product quality were investigated and the optimum conditions were confirmed as follows:127.4 g raffinate was contained per 1 L butyl alcohol,95 g water was contained per 1 L butyl alcohol,the extraction time was 60 min,the extraction temperature was 30 ℃,and 26.075 g potassium chloride was used per 1 L butyl alcohol.The advantages of the method were economical and simple in operation.

Key words: potassium dihydrogen phosphate, butyl alcohol, extraction method, raffinate

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