Process for the recovery of methanol.

2005 
Process for recovering methanol from mixtures containing methanol and water, comprising a) a concentration by evaporation multistage least two stages of evaporation, comprising each stage evaporation an evaporator, and in the evaporation multistage pressure is reduced from each stage of evaporation to the next stage of evaporation, and the evaporator of the second stage of evaporation and each of the subsequent stages of concentration evaporation, is heated with the overhead product vaporous stage in each previous case, and b) a series of at least two distillation stages, each comprising distillation stage distillation column and an evaporator, and time providing the second and each subsequent distillation stages, the produc to queue the distillation step in each previous case, in the series of distillation stages the pressure is increased from each distillation stage to the next distillation stage, with the exception of the final distillation stage, in each stage distillation evaporator is heated in each case with the top product as vapor from the distillation column of the subsequent distillation stage, being fed the bottom product obtained in the last stage of evaporation of the evaporation multistage a), the first distillation stage of the series of distillation stages b).
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