发明公开
- 专利标题: PROCESS FOR PRODUCING HYDROXYLAMINE
- 专利标题(中): 用于生产HYDROXYLAMINE
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申请号: EP04771815.0申请日: 2004-08-12
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公开(公告)号: EP1663862A2公开(公告)日: 2006-06-07
- 发明人: AOKI, Takanori, Showa Denko K.K. , HIRO, Toshitaka, Showa Denko K.K.
- 申请人: Showa Denko K.K.
- 申请人地址: 13-9, Shiba Daimon, 1-chome, Minato-ku Tokyo 105-8518 JP
- 专利权人: Showa Denko K.K.
- 当前专利权人: Showa Denko K.K.
- 当前专利权人地址: 13-9, Shiba Daimon, 1-chome, Minato-ku Tokyo 105-8518 JP
- 代理机构: Strehl Schübel-Hopf & Partner
- 优先权: JP2003293143 20030813; JP2004020217 20040128
- 国际公布: WO2005016817 20050224
- 主分类号: C01B21/14
- IPC分类号: C01B21/14
摘要:
It is an object of the present invention to provide a process for producing a hydroxylamine by reacting a salt of hydroxylamine with an alkali compound, where the yield reduction due to formation of a complex between the produced hydroxylamine and a salt produced as a by-product or adsorption of the hydroxylamine to the by-product salt is decreased, and a high-concentration and high-purity hydroxylamine is safely produced at a high yield. The process for producing a hydroxylamine of the present invention comprises a reaction step of reacting a salt of hydroxylamine with an alkali compound to obtain a hydroxylamine while keeping the reaction solution at a pH of 7 or more, a purification step of purifying the hydroxylamine by ion exchange, and a concentration step of concentrating the hydroxylamine by distillation at the column bottom.
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