发明名称 |
Preparation of an aqueous solution of free hydroxylamine |
摘要 |
An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.
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申请公布号 |
US6299734(B1) |
申请公布日期 |
2001.10.09 |
申请号 |
US19980122099 |
申请日期 |
1998.07.24 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
WATZENBERGER OTTO;MAUER PETER;STROEFER ECKHARD;SCHELLING HEINER;SCHNEIDER HANS-MICHAEL |
分类号 |
C01B21/14;(IPC1-7):B01D3/34;B01D3/38 |
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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