Ethylene oxide purification method

A technology of ethylene oxide and separation method, applied in the direction of organic chemistry and the like, can solve the problems of low absorption rate and removal rate of ethylene oxide and high energy consumption, and achieve good absorption effect, low energy consumption and good separation effect. Effect

CN109422708AActive Publication Date: 2019-03-05CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-03-05

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Abstract

Ethylene oxide purification method. The invention relates to a separation method of ethylene oxide, which mainly solves the problems of high energy consumption, low ethylene oxide absorption rate andlow removal rate in the prior art. The invention aims at the low-concentration ethylene oxide product at the outlet of an ethylene oxide reactor, and the low-concentration ethylene oxide is separatedand enriched by adopting a mixed absorbent of an ionic liquid with anion as hexafluorophosphate radical and triethylene glycol dimethyl ether. Compared with the traditional process using water or ethylene carbonate as absorbent, the process flow is simplified, the separation efficiency is higher, and the process has industrial application potential.
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