发明名称 |
METHOD FOR PURIFYING TETRAHYDROFURAN BY DISTILLATION |
摘要 |
<p>Crude water-containing tetrahydrofuran is purified by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrahydrofuran from the top of the second column into the first column, passing a sidestream of the first column into the second column, recycling the bottom product of the third column into the first column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.</p> |
申请公布号 |
EP1483252(B1) |
申请公布日期 |
2005.07.20 |
申请号 |
EP20030709732 |
申请日期 |
2003.02.28 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
WINDECKER, GUNTHER;WECK, ALEXANDER;FISCHER, ROLF-HARTMUTH;ROESCH, MARKUS;BOTTKE, NILS;HESSE, MICHAEL;SCHLITTER, STEPHAN;BORCHERT, HOLGER |
分类号 |
B01D3/14;C07D307/08;(IPC1-7):C07D307/08 |
主分类号 |
B01D3/14 |
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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