发明公开
- 专利标题： PROCESS AND APPARATUS FOR RECOVERING AMMONIA FROM A GAS STREAM
- 专利标题（中）： 方法和设备中回收氨从气流中
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申请号： EP10740559.9申请日： 2010-07-27
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公开(公告)号： EP2459301A1公开(公告)日： 2012-06-06
- 发明人: CASARA, Paolo
- 申请人： Saipem S.p.A.
- 申请人地址： Via Martiri di Cefalonia, 67 San Donato Milanese IT
- 专利权人： Saipem S.p.A.
- 当前专利权人： Saipem S.p.A.
- 当前专利权人地址： Via Martiri di Cefalonia, 67 San Donato Milanese IT
- 代理机构： Bottero, Carlo
- 优先权： ITMI20091372 20090730
- 国际公布： WO2011012324 20110203
- 主分类号： B01D53/58
- IPC分类号： B01D53/58 ; B01D53/96 ; C01C1/12
摘要：
The present invention relates to a process for the recovery of ammonia contained in a gaseous stream, said process comprising the following phases: (a) subjecting the gaseous stream containing ammonia to a washing with an aqueous washing solution having a pH lower than 7.0, with the formation of a purified gaseous stream and an aqueous solution containing an ammonium salt; (b) treating the aqueous solution containing the ammonium salt coming from phase (a) in a vertical falling film heat exchanger at a temperature from 50 to 250°C and an absolute pressure ranging from 50 KPa to 4 MPa with the formation of a regenerated washing solution and a gaseous stream comprising NH
3 and H
2 O; (c) recycling said regenerated washing solution to phase (a). The present invention also relates to equipment for effecting the above process.
3 and H
2 O; (c) recycling said regenerated washing solution to phase (a). The present invention also relates to equipment for effecting the above process.
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