精喹禾灵原药生产废水中对甲苯磺酸钾及碳酸钾的分离回收工艺  

Separation Process of p-MePhSO_3K and K_2CO_3 from the Waste-water of Quizalofop-p-ethyl Production

作　　者：李丽霞[1] 王宗 陈梦琦 郝双红[1] 

机构地区：[1]青岛农业大学化学与药学院山东省农业仿生应用工程技术研究中心,山东青岛266109 [2]京博农化科技股份有限公司,山东博兴256500

出　　处：《农药》2017年第7期489-491,共3页Agrochemicals

基　　金：国家级大学生创新训练计划项目(201510435015)

摘　　要：[目的]建立精喹禾灵原药生产废水中对甲苯磺酸钾及碳酸钾的分离回收工艺。[方法]测定绘制25℃碳酸钾-碳酸氢钾-对甲苯磺酸钾-水四元体系固液平衡相图,并以此为基础设计精喹禾灵原药生产废水中对甲苯磺酸钾及碳酸钾的分步蒸发分离回收工艺。[结果]利用分步蒸发分离回收工艺,精喹禾灵原药生产废水中对甲苯磺酸钾的回收率及纯度分别为98.5%和98.2%;碳酸氢钾热解为碳酸钾可全部回收,回收的碳酸钾纯度达98.5%。[结论]利用碳酸钾-碳酸氢钾-对甲苯磺酸钾-水四元体系固液平衡相图很好地指导该体系中混合盐的分离回收。[Aims] This study aims to set up a separation process ofp-MePhSO3K and K2CO3 from the waste-water of quizalofop-p-ethyl production. [Methods] The solid-liquid phase diagram ofp-MePhSO3K-KHCO3-K2CO3-H2O at 25 ℃ was measured and plotted, and the separation process of p-MePhSO3K and K2CO3 from the waste-water of quizalofop-p-ethyl production was designed. [Results] The recovery and purity ofp-MePhSO3K from waste-water of quizalofop-p-ethyl production were 98.5 and 98.2%, respectively. K2CO3 could be completely recovered by pyrolysis of KHCO3, and its purity was 98.5%. [Conclusions] The solid-liquid phase diagram ofp-MePhSO3K-KHCO3-K2CO3-H2O plays a good role in separation of these salts.

关 键 词：固液平衡相图 分离 工业废水 混合盐 精喹禾灵 

分 类 号：X786[环境科学与工程—环境工程]