| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an industrially advantageous method for producing dimethyl ether. <P>SOLUTION: The method (process) for producing dimethyl ether is provided, comprising the steps of (a) feeding a first stream containing methanol into a pre-reactor with a fixed bed solid acidic catalytic structure to conduct a catalytic reaction to form dimethyl ether and water, (b) feeding part of the product stream of the pre-reactor to a distillation column reactor, (c) contacting the stream containing methanol with a fixed bed solid acidic catalytic structure in a distillation reaction zone to conduct a catalytic reaction to form dimethyl ether, (d) fractionating the resultant dimethyl ether from water and unreacted material, (e) extracting the dimethyl ether product from the distillation column reactor as a first stream containing dimethyl ether, and (f) extracting water and unreacted material as a second stream. The process improves the effectiveness of the production of dimethyl ether. Besides, the process can be combined with a process for the production of methanol. <P>COPYRIGHT: (C)2009,JPO&INPIT |
