发明名称 |
Method and apparatus for the production of alkylene carbonate |
摘要 |
A method for the production of an alkylene carbonate at high yields and high selectivity by a reaction between an alkylene glycol and urea, the method being capable to preventing the deposition of a white crystal in the reflux condenser used in a conventional method for the production of alkylene carbonate and the subsequent decrease in the yield, wherein: a gas washing member and a cooling member are disposed above a reaction portion where alkylene glycol and urea are allowed to react, ammonia-containing steam exhausted from the reaction portion is downwardly introduced into the cooling member through the gas washing member, condensate and ammonia gas exhausted from a bottom of the cooling member are gas-liquid separated, the condensate is introduced into the gas washing member, and the ammonia gas is removed from the reaction system.
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申请公布号 |
US5440004(A) |
申请公布日期 |
1995.08.08 |
申请号 |
US19940238743 |
申请日期 |
1994.05.05 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
DOYA, MASAHARU;KANBARA, YUTAKA;KIMIZUKA, KEN-ICHI;OKAWA, TAKASHI |
分类号 |
C07D317/36;(IPC1-7):C08G64/00 |
主分类号 |
C07D317/36 |
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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