Patent ID: 6800665
Filing Date: 2004-10-05
Classification: B01J,C01B,C07C,Y02P

Abstract:
A method for producing dimethyl ether comprising:(a) reacting a raw material gas containing carbon monoxide and hydrogen in the presence of a catalyst to produce a reaction gas including dimethyl ether, carbon dioxide, carbon monoxide and hydrogen; (b) separating the reaction gas from step (a) into carbon monoxide and hydrogen, and into dimethyl ether and carbon dioxide; (c) recycling to step (a) the carbon monoxide and the hydrogen which were separated from the reaction gas in step (b); (d) removing the carbon dioxide from the dimethyl ether and the carbon dioxide from step (b) to obtain the dimethyl ether; and (e) recycling the dimethyl ether from step (d) to step (b).