发明名称 |
Process for the production of terephthalic acid |
摘要 |
A terephthalic acid slurry in acetic acid is produced by oxidizing p-xylene in acetic acid, removing water by evaporation of a stream of water and acetic acid, and returning acetic acid to the oxidation step. The terephthalic acid is separated from the reaction medium in a first zone to leave a deposit on a band, the deposit is washed with a first aqueous medium in a second zone, removed from the band in a third zone, and admixed with a second aqueous medium. Reaction medium is passed from the first zone to the oxidation step and terephthalic acid is recovered, preferably after further purification.
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申请公布号 |
US5527957(A) |
申请公布日期 |
1996.06.18 |
申请号 |
US19950470965 |
申请日期 |
1995.06.06 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
HINDMARSH, ERIC;TURNER, JOHN A.;URE, ALAN M. |
分类号 |
B01J23/42;B01J23/44;C07B61/00;C07C51/265;C07C51/42;C07C51/43;C07C51/487;C07C63/26;(IPC1-7):C07C51/16 |
主分类号 |
B01J23/42 |
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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