PROCESS FOR THE PREPARATION OF DIMETHYL Aether Product by CATALYTIC CONVERSION OF SYNTHESIS GAS IN DIMETHYL Aether

摘要

PROCESS FOR THE PREPARATION OF DIMETHYL ALCOHOL PRODUCT BY CATALYTIC CONVERSION OF SYNTHESIS GAS IN DIMETHYL Aether. A process for the preparation of dimethyl ether product by catalytic conversion of synthesis gas to dimethyl ether comprising the steps of contacting a synthesis gas stream comprising carbon dioxide in a dimethyl ether synthesis step in one or more reactors and with one or more reactors. Further catalysts being active in methanol formation and methanol dehydration in dimethyl ether, to form a product mixture comprising dimethyl ether and carbon dioxide, wash the product mixture in a scrubbing zone with a liquid solvent being rich in dialkyl ether of a polyalkylene glycol and thus dissolve carbon dioxide and dimethyl ether in the liquid solvent, treat the liquid solvent being removed from the scrubbing zone sequentially in the separation zone to desorpt the dissolved carbon dioxide and recover a substantially pure, dimethyl ether product. the liquid solvent in its substance form recycle the poor liquid solvent into the purification zone.