萃取法制备硫酸钾技术研究  

Study on preparation of potassium sulfate by extraction method

作　　者：孟洋 廖秋实 田承涛 肖林波 黄琴 MENG Yang;LIAO Qiu-shi;TIAN Cheng-tao;XIAO Lin-bo;HUANG Qin(Hubei Sanning Chemical Co.,Ltd.,Zhijiang 443206,China;Hubei Engineering and Technical Research Center of Phosphoric Acid and Phosphate,Yichang 443000,China;Wuhan Institute of Technology,Wuhan 430070,China)

机构地区：[1]湖北三宁化工股份有限公司,湖北枝江443206 [2]湖北省磷酸及磷酸盐工程技术研究中心,湖北宜昌443000 [3]武汉工程大学,湖北武汉430070

出　　处：《化学工程师》2024年第7期99-102,共4页Chemical Engineer

基　　金：湖北省重点研发计划项目(2023BCB079)。

摘　　要：本文采用醇类作为萃取剂,以工业KHSO4为原料,探究生成优等品K2SO4的最佳反应条件。结果表明,将2mol·L^(-1) KHSO_(4)溶液与甲醇以体积比3∶5,在常温下萃取60min,可得到产品收率93.8%、K2O含量为53%、Cl^(-)含量低于0.04%、S含量为18.12%的K2SO4固体,且甲醇可通过蒸馏进行回收。此流程工艺简单,且无“三废”产生,生成的K2SO4达到国家优等品标准,可为企业创造一定的经济效益。In this study,alcohols were used as extractants and industrial potassium bisulfate was used as raw materials to explore the best reaction conditions for producing superior potassium sulfate.The results showed that 2mol·L^(-1) potassium bisulfate solution was extracted with methanol in the volume ratio of 3∶5 for 60min at room temperature to obtain potassium sulfate solid with 93.8%product yeild 53%K_(2)O content,less than 0.04%Cl^(-)and 18.12%S,and methanol can be recovered by distillation.This process is simple,and there is no“three wastes”produced,and the generated potassium sulfate reaches the national excellent product standard,which can create certain economic benefits for enterprises.

关 键 词：溶剂萃取 KHSO4 K2SO4 

分 类 号：TQ443[化学工程—化学肥料工业]