发明名称 |
METHOD FOR MANUFACTURING CARBOXYLIC ACID |
摘要 |
A process and a production apparatus for producing a high-purity carboxylic acid, from which a metal-containing impurity and/or a carbonyl-group-containing impurity have been highly purified, are provided. The process for producing a carboxylic acid according to the present invention comprises subjecting a carboxylic acid stream containing a metal-containing impurity to a first flash system 1 to give a vaporized fraction, distilling the vaporized fraction by a distillation system 5 to separate into a stream mainly containing a carboxylic acid and a fraction containing ahigh-volatile impurity (or lowerboilingpoint impurity), and feeding the separated stream mainly containing the carboxylic acid to a second flash system 10 or an adsorption system to form a purified carboxylic acid. |
申请公布号 |
EP2949640(A4) |
申请公布日期 |
2016.09.21 |
申请号 |
EP20140742900 |
申请日期 |
2014.01.24 |
申请人 |
DAICEL CORPORATION |
发明人 |
MIURA, HIROYUKI;SHIMIZU, MASAHIKO;UENO, TAKASHI |
分类号 |
C07C51/44;C07B61/00;C07C51/12;C07C51/47;C07C53/08 |
主分类号 |
C07C51/44 |
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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