发明名称 |
PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS |
摘要 |
The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/l or less, preferably 250 g carboxylate ions/l or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar. |
申请公布号 |
EP1232137(B1) |
申请公布日期 |
2005.07.13 |
申请号 |
EP20000989029 |
申请日期 |
2000.11.27 |
申请人 |
PURAC BIOCHEM B.V. |
发明人 |
WINKELAAR, HENDRIK, MARTINUS;VAN BREUGEL, JAN;VILA CAMPRUBI, MARGARITA;VIDAL LANCIS, JOSE MARIA;KAISER, BERNHARD;CONSILIUS, WOLF-DIETER |
分类号 |
B01D1/22;B01D3/10;C07C51/44;C07C59/00;C07C59/08;(IPC1-7):C07C51/44 |
主分类号 |
B01D1/22 |
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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