发明名称 |
Processes for Preparing Acetic Anhydride |
摘要 |
In one embodiment, the invention is to a process for producing acetic anhydride. The process includes at least a step of carbonylating methanol and/or a methanol derivative with carbon monoxide to form acetic acid, and contacting ketene with the acetic acid to form a crude acetic anhydride product stream and a vent stream having unreacted ketene. The process further comprises a step of directing at least a portion of the vent stream to a liquid ring vacuum compressor having a ring seal fluid comprising acetic acid The unreacted ketene in the portion of the vent stream contacts the ring seal fluid to form supplemental acetic anhydride.
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申请公布号 |
US2013197267(A1) |
申请公布日期 |
2013.08.01 |
申请号 |
US201213359060 |
申请日期 |
2012.01.26 |
申请人 |
WARNER R. JAY;MEILCHEN MELCHOIR;CELANESE INTERNATIONAL CORPORATION |
发明人 |
WARNER R. JAY;MEILCHEN MELCHOIR |
分类号 |
C07C51/56;C07C51/573 |
主分类号 |
C07C51/56 |
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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