发明名称 |
APPARATUS AND METHOD FOR RECOVERY OF ACETIC ACID FROM AN AQUEOUS SOLUTION THEREOF |
摘要 |
The invention disclosed relates to an apparatus and method for recovering acetic acid from an aqueous feed stream containing acetic acid, in particular a stream generated during terephthalic acid production. The apparatus includes: a liquid-liquid extraction column to which water-rich feed streams are fed, having a guard bed situated near the top and within the extraction column for conversion by reaction with acetic acid of alcohol within the mixture to the corresponding ester; and an azeotropic distillation column to remove residual water from acetic acid, to which water-poor feed streams are fed directly at a height of the azeotropic distillation column at which the mixture therein has a similar water concentration. The liquid-liquid extraction column produces an extract comprising an extraction solvent and acetic acid which is sent to the azeotropic distillation column to separate residual water and acetic acid. |
申请公布号 |
KR20120013948(A) |
申请公布日期 |
2012.02.15 |
申请号 |
KR20117023948 |
申请日期 |
2010.03.01 |
申请人 |
AMT INTERNATIONAL, INC. |
发明人 |
JANG, JI YOUNG;WU KUANG YEU;CHUANG KARL TZE TANG |
分类号 |
C07C51/48;C07C51/265;C07C51/46;C07C53/08 |
主分类号 |
C07C51/48 |
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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