Method for producing ethylene glycol by hydrolyzing ethylene glycol monomethyl ether

The present invention is a target product in which ethylene glycol monomethyl ether, which is a fresh raw material, and water are passed through a reaction zone on which a solid acid catalyst is supported and reacted, and the mixture after the reaction is separated by a separation system. Obtain ethylene glycol, by-products methanol, dimethyl ether and ethylene glycol derivatives, and unreacted raw material ethylene glycol monomethyl ether and water, then transport the target product ethylene glycol to the product collection system. , By-product methanol and dimethyl ether are transported to a by-product collection system, and unreacted raw material ethylene glycol monomethyl ether, unreacted raw material water and by-product ethylene glycol derivative Circulate and use fresh ingredients That ethylene glycol is mixed with monomethyl ether and water are reacted placed in a reaction zone, ethylene glycol monomethyl ether is hydrolyzed to provide a process for producing ethylene glycol. The present invention provides a novel method for producing ethylene glycol by hydrolyzing ethylene glycol monomethyl ether by the above-described process, and has a long catalyst life and excellent stability in this method.