METHOD FOR DIRECTLY PREPARING GLYCOL DIMETHYL ETHER AND CO-PRODUCING ETHYLENE GLYCOL FROM ETHYLENE GLYCOL MONOMETHYL ETHER

WIPO Patent Application WO/2017/054321

A1

Provided is a method for directly preparing glycol dimethyl ether and co-producing ethylene glycol from ethylene glycol monomethyl ether. More specifically, the method comprises reacting the raw material of ethylene glycol monomethyl ether with optionally an inert gas as a carrier gas in a reactor loaded with a solid acid catalyst, under conditions of a reaction temperature of 40-150ºC and a reaction pressure of 0.1-15.0 MPa, to produce glycol dimethyl ether and ethylene glycol. The mass space velocity of the raw material of ethylene glycol monomethyl ether is 0.05-5.0h-1, the volume concentration of the raw material of ethylene glycol monomethyl ether is 1-100%, and the volume concentration of the carrier gas is 0-99%. In the method of the present invention, with a solid acid as a catalyst and ethylene glycol monomethyl ether as a raw material, under a low temperature condition, glycol dimethyl ether and ethylene glycol are prepared directly with high selectivity; moreover, there is substantially or completely no production of a 1,4-dioxane by-product that causes pollution to the environment and is harmful to the human body or animal bodies.

SHI LEI (CN)
NI YOUMING (CN)
ZHU WENLIANG (CN)
LIU YONG (CN)
LIU HONGCHAO (CN)
LIU ZHONGMIN (CN)

PCT/CN2015/097160

April 06, 2017

December 11, 2015

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DALIAN INST CHEMICAL PHYSICS CAS (CN)

C07C41/14; C07C29/10; C07C31/20; C07C41/01; C07C43/10

JPS60120829A	1985-06-28
CN104250206A	2014-12-31
CN1184461A	1998-06-10
CN1762947A	2006-04-26
US20040044253A1	2004-03-04
JPS6011438A	1985-01-21

See also references of EP 3330246A4

CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)

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