发明名称 |
Process for recovering high-purity organic acid |
摘要 |
The present invention relates to a process for inexpensively and effectively recovering a high-purity organic acid, according to which a crude organic acid is subjected to extraction treatment with an organic solvent to obtain an organic solvent extract containing an organic acid; the organic solvent extract is mixed with a high-pressure gas to precipitate and separate impurities thereby obtaining a solution containing a high-purity organic acid; and the organic acid is separated from the solution to obtain a high-purity organic acid.
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申请公布号 |
US5349084(A) |
申请公布日期 |
1994.09.20 |
申请号 |
US19910765582 |
申请日期 |
1991.09.25 |
申请人 |
IDEMITSU PETROCHEMICAL CO., LTD. |
发明人 |
SHISHIKURA, AKIHIRO;KIMBARA, HIROSHI;YAMAGUCHI, KATSUHISA;ARAI, KUNIO |
分类号 |
C07C51/42;C07C51/48;(IPC1-7):C07C51/42 |
主分类号 |
C07C51/42 |
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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