FLUIDIZED CATALYTIC PROCESS FOR PRODUCTION OF DIMETHYL ETHER FROM METHANOL

摘要

Disclosed is a fluid catalytic process of producing dimethyl ether from methanol which is carried out in a reactor of fluidized state, comprising: (1) the starting materials of methanol are introduced from two or more positions at the bottom, the lower part, the middle part and the upper part of the reactor, and are contacted with catalysts for dehydrating methanol to form dimethyl ether, thereby the reaction of dehydrating methanol into dimethyl ether is carried out to obtain the product stream, and then the product stream is separated to obtain the carbon-deposited catalyst and the crude product mainly containing the title product; (2) allor part of the carbon-deposited catalyst from step (1) is introduced continuously or intermittently into regenerator for burning regeneration, and all or part of the regenerated catalyst is directly returned to step (1) after being cooled.