发明名称 |
Process and plant for the production of urea |
摘要 |
A process for urea production in a synthesis loop based on CO2 stripping is distinguished by the fact that at least part of a flow recycle carbamate is sent to a treatment of carbamate decomposition and removal of free ammonia to obtain a vapour flow containing CO2 and NH3 with minimum content of water, and a weak water carbamate solution sent back to a urea recovery unit URS and being at least part of above vapour flow containing CO2 and NH3 with minimum content of water directly fed to the bottom zone of a reaction space.
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申请公布号 |
US6552224(B2) |
申请公布日期 |
2003.04.22 |
申请号 |
US20020049687 |
申请日期 |
2002.05.16 |
申请人 |
UREA CASALE S.A. |
发明人 |
PAGANI GIORGIO;ZARDI FEDERICO;ROMITI DOMENICO |
分类号 |
B01J12/02;C07C273/04;(IPC1-7):C07C273/04 |
主分类号 |
B01J12/02 |
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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