Acetaldehyde removal from methyl acetate by distillation at...

Details Acetaldehyde removal from methyl acetate by distillation at... Acetaldehyde removal from methyl acetate by distillation at...

2007-10-30

2011-11-22

Manoharan, Virginia (Department: 1771)

Distillation: processes, separatory

With measuring, testing or inspecting

C203S002000, C203S003000, C203S029000, C203S091000, C203SDIG021, C203SDIG023, C560S231000, C560S248000, C562S519000, C562S608000, C568S420000, C568S487000, C568S492000

Reexamination Certificate

active

08062482

ABSTRACT:
A method for removing acetaldehyde from a mixture of methyl acetate, methanol and acetaldehyde includes: (a) feeding the mixture of methyl acetate, methanol and acetaldehyde to a distillation column; (b) distilling the feed mixture of methyl acetate methanol and acetaldehyde at a pressure of 10 psig or more to generate an overhead vapor stream enriched in acetaldehyde as compared with the feed mixture and a residue stream depleted in acetaldehyde as compared with the feed mixture; and (c) withdrawing the residue stream depleted in acetaldehyde from the distillation column.

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