Process for producing purified methanol

Details Process for producing purified methanol Process for producing purified methanol

C - Chemistry, Metallurgy

07

C

202/84

C07C 29/80 (2006.01) B01D 3/14 (2006.01) B01D 3/32 (2006.01)

Patent

CA 1110994

ABSTRACT OF THE DISCLOSURE Purified methanol is produced by distilling a water methanol mixture in (a) a first column from which is taken a product methanil stream at an upper level, weakly aqueous methanol as a side stream and water as bottom and (b) a second column in which that weakly aqueous methanol is separate into an overhead product stream and aqueous methanol bottoms. The first column may be preceded by a preliminary volatiles- removal column. The process is economical in heat consumption, especially when methanol vapour from the second column is heat- exchanged with the feed or bottoms of the first column.

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