发明名称 |
Purification of solvents used for the purification of alkylene oxide |
摘要 |
This invention concerns a process for removing carbonyl-containing impurities from impure extractive distillation solvent such as a glycol, comprising: contacting the impure extractive distillation solvent with an acidic ion exchange resin. The purified extractive distillation solvent can be recycled for use as a solvent in an extractive distillation process that removes impurities from alkylene oxide. The extractive distillation solvent can be ethylene glycol monomethyl ether (EGME) used to purify propylene oxide.
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申请公布号 |
US2004211658(A1) |
申请公布日期 |
2004.10.28 |
申请号 |
US20030421367 |
申请日期 |
2003.04.23 |
申请人 |
HUNTSMAN PETROCHEMICAL COMPANY |
发明人 |
SANDERSON JOHN R.;MUELLER MARK;FARONE JAMES P. |
分类号 |
B01D3/40;B01J39/04;C07C29/76;C07C41/36;(IPC1-7):B01D3/34;C02F1/42;C07C29/74 |
主分类号 |
B01D3/40 |
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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