发明名称 |
METHOD FOR THE PRODUCTION OF AN AQUEOUS HYDROXYLAMINE SOLUTION |
摘要 |
This invention relates to a method for producing an aqueous solution of free hydroxylamine (HA) by simultaneous countercurrent treatment of a HA salt with ammonia or ammonia water, then separating the HA by distillation and reconcentrating the aqueous HA solution in a countercurrent with a stripping medium. The stripping medium used according to the invention is a mixture of steam and a non-condensable inert gas and the process temperature at a defined pressure is controlled by the quantity of non-condensable inert gas at the column inlet. The preferred non-condensable inert gas is nitrogen. This results in increased safety and a reduction in losses of the method for producing aqueous solutions of free HA. |
申请公布号 |
EP1534630(B1) |
申请公布日期 |
2006.04.26 |
申请号 |
EP20040710790 |
申请日期 |
2004.02.13 |
申请人 |
DOMO CAPROLEUNA GMBH |
发明人 |
LEETSCH, NORBERT;STRECKER, THOMAS;KRETSCHMAR, MANFRED;SEIDLER, JOACHIM |
分类号 |
C01B21/14;B01D3/34 |
主分类号 |
C01B21/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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