发明公开
- 专利标题： Process for purifying phosphoric acid
- 专利标题（中）： 用于净化磷酸的方法
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申请号： EP88890169.1申请日： 1988-06-29
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公开(公告)号： EP0298948A3公开(公告)日： 1989-02-22
- 发明人: Dore, Jeffrey C. , Brochu, David P. , Hall, Richard E.
- 申请人： FMC Corporation
- 申请人地址： 2000 Market Street Philadelphia Pennsylvania 19103 US
- 专利权人： FMC Corporation
- 当前专利权人： FMC Corporation
- 当前专利权人地址： 2000 Market Street Philadelphia Pennsylvania 19103 US
- 代理机构： Pawloy, Heinrich, Dr.
- 优先权： US69991 19870706
- 主分类号： C01B25/238
- IPC分类号： C01B25/238 ; C01B25/46
摘要：
The invention is a process to purify a solution of phosphoric acid by removing transition metal impurities such as iron, chromium and vanadium. In the process a solution of phosphoric acid in an organic solvent which is substantially immiscible with water is contacted with an aqueous solution of a salt of an alkali metal of phosphoric acid. The phosphoric acid recovered following the contacting contains a substantially lesser content of transition metal impurities.
公开/授权文献
- EP0298948B1 Process for purifying phosphoric acid 公开/授权日：1991-12-27
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