A process for producing dimethyl ether from methanol

Details A process for producing dimethyl ether from methanol A process for producing dimethyl ether from methanol

C - Chemistry, Metallurgy

07

C

C07C 41/09 (2006.01) B01J 29/08 (2006.01) C07C 43/04 (2006.01)

Patent

CA 2719517

Disclosed is a process for producing dimethyl ether from methanol, which is characterized in that the absorbing liquid used in said absorbing column is the bottom liquid of DME-fractionating column and/or bottom waste water of the methanol-recovering column. Said process can significantly reduce energy consumption of the apparatus.

La présente invention concerne un procédé pour produire de l'éther diméthylique (DME) à partir de méthanol, qui est caractérisé en ce que le liquide absorbant utilisé dans la colonne absorbante est le liquide inférieur de colonne de fractionnement de DME et/ou les eaux usées inférieures de la colonne de récupération de méthanol. Ledit procédé peut réduire significativement la consommation d'énergie de l'appareil.

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