发明名称 |
Purification process for removal of impurities in acetic acid-ethylene reactions |
摘要 |
This invention is a process for the removal of acetaldehyde impurities from ethyl acetate formed by reacting acetic acid with ethylene over a catalyst by refining a crude mixture of ethyl acetate, diethyl ether, acetaldehye and water in a column (C) so as to remove (a) refined ethyl acetate as a base product to be further purified, and (b) light ends mixture comprising diethyl ether and acetaldehyde overhead to be fed to an aldehyde removal column; a purge comprising acetaldehyde is removed at or near the top of the aldehyde removal column. The process is a very important step in the commercial manufacture of ethyl acetate because the presence of acetaldehyde is detrimental to the esterification catalyst.
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申请公布号 |
US6232491(B1) |
申请公布日期 |
2001.05.15 |
申请号 |
US19990298999 |
申请日期 |
1999.04.26 |
申请人 |
BP CHEMICALS LIMITED |
发明人 |
CUNNINGTON MALCOLM J.;KHAN MOHAMMED HUSSAIN;PACYNKO WITOLD FRANCISZEK |
分类号 |
C07C67/04;C07C67/48;C07C67/54;C07C67/56;C07C69/14;(IPC1-7):C07C67/48 |
主分类号 |
C07C67/04 |
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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