发明名称 |
FALLING-FILM STRIPPER FOR CARBAMATE DECOMPOSITION |
摘要 |
A stripper (SN) for carbamate decomposition and ammonia plus carbon dioxide recovery from a urea solution (U) is realized with a shell-and-tube heat exchanger, where a liquid falling film of urea solution and a counter- current gaseous flow of a stripping medium fed to a bundle of surface-heated tubes (6); the stripping medium such as carbon dioxide is distributed into the tubes (6) by a plurality of gas risers (32); the gas risers are preferably associated to a perforated tray (30) in the bottom chamber (11) of the stripper. Revamping of a conventional CO2 stripper is also disclosed. |
申请公布号 |
WO2011098335(A1) |
申请公布日期 |
2011.08.18 |
申请号 |
WO2011EP50796 |
申请日期 |
2011.01.21 |
申请人 |
UREA CASALE SA;SCOTTO, ANDREA;VISCIOTTI, DAMIANO |
发明人 |
SCOTTO, ANDREA;VISCIOTTI, DAMIANO |
分类号 |
B01D1/06;B01D1/14;B01D3/00;B01D3/04;C07C273/04 |
主分类号 |
B01D1/06 |
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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