发明名称 |
Verfahren zur Herstellung von hochreinem Monoethylenglykol |
摘要 |
The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. During the vacuum dehydration, an aqueous stream containing monoethylene glycol in a concentration of less than 1 wt. %, preferably less than 0.1 wt. %, medium boilers and light boilers is drawn off and then sluiced out, optionally after reprocessing.
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申请公布号 |
DE19843697(A1) |
申请公布日期 |
2000.03.30 |
申请号 |
DE1998143697 |
申请日期 |
1998.09.23 |
申请人 |
BASF AG |
发明人 |
ADRIAN, TILL;BESLING, BERND;HASSE, HANS;VANSANT, FRANS;THEIS, GERHARD |
分类号 |
C07C29/10;C07C29/80;C07C31/20;(IPC1-7):C07C29/80 |
主分类号 |
C07C29/10 |
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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