Process for recovering methanol

Details Process for recovering methanol Process for recovering methanol

C - Chemistry, Metallurgy

07

C

C07C 29/74 (2006.01) B01D 53/00 (2006.01)

Patent

CA 2590872

Disclosed is a method for recovering methanol from mixtures containing methanol and water. Said method comprises multistage evaporation with the integration of heat, the pressure being decreased from one stage to the next, followed by a series of distillation stages with the integration of heat, the pressure being increased from one stage to the next. The inventive method allows the amount of energy required for recovering methanol to be reduced.

L'invention concerne un procédé pour récupérer du méthanol à partir de mélanges contenant du méthanol et de l'eau. Ledit procédé comprend une évaporation en plusieurs étapes comprenant l'intégration de chaleur, la pression diminuant d'une étape à l'autre, puis une série d'étapes de distillation grâce à l'insertion de chaleur, la pression augmentant d'une étape à l'autre. Le procédé de l'invention permet de réduire la quantité d'énergie nécessaire pour récupérer du méthanol.

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