发明名称 |
PROCEDE DE DISTILLATION D'AMMONIAC CONTENU DANS UN MELANGE COMPRENANT DU CAPROLACTAME |
摘要 |
<p>The present invention relates to an improved process for distilling ammonia from a mixture, more particular from a mixture resulting from the reaction between aminonitrile and water (which reaction is also called cyclizing hydrolysis). The process for distilling the ammonia contained in an aqueous caprolactam solution, uses a column with a bottom temperature less than or equal to 160° C. and at an absolute pressure less than or equal to 5 bar, the ammonia distilled at the top of the column being compressed to a pressure greater than or equal to 10 bar and then condensed at a temperature of 25° C. to 60° C.</p> |
申请公布号 |
FR2781476(B1) |
申请公布日期 |
2000.09.22 |
申请号 |
FR19980009530 |
申请日期 |
1998.07.22 |
申请人 |
RHODIA FIBER AND RESIN INTERMEDIATES |
发明人 |
BOCQUENET GERALD;HOUSSIER PATRICK |
分类号 |
C07D223/10;B01D1/28;B01D3/00;C01C1/02;C01C1/10;C07D201/16;(IPC1-7):C01C1/02;B01D3/14 |
主分类号 |
C07D223/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|