Purification of acetone
AssigneeThe Dow Chemical Company
InventorsEdward A. Fraini, George W. Tepera
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Abstract
The present invention includes a process for removing aldehydes from acetone having aldehyde impurities comprising contacting the acetone with a sufficient amount of at least one diamine compound to react with at least a portion of the aldehyde and heating the acetone in the presence of the diamine compound sufficiently to result in reaction of the diamine compound and aldehyde, thus reducing the amount of aldehyde in the acetone. It is preferred that the process is an improvement in a process for purifying crude acetone having aldehydes therein, by fractionally distilling the acetone in a multiple plate distillation, the improvement comprising adding to the acetone a sufficient amount of at least one diamine compound to react with at least a portion of the aldehydes.
Claims13
A process for removing aldehyde from acetone containing aldehyde impurities comprising contacting, the acetone with an amount of at least one diamine compound sufficient to react with at least a portion of the aldehyde and heating the acetone and diamine compound sufficiently to result in reaction of the diamine compound and aldehyde.
An improvement in a process for purifying crude acetone having aldehyde impurities therein, by fractionally distilling the crude acetone in distillation column having a lower first tray and upper top tray, wherein the acetone is fed to the column at a feed point between the first and top trays and is separated into liquid and gas phases, and purified acetone is removed as overhead product from the top of the column the improvement comprising adding sufficient diamine to the acetone to reduce the levels of aldehyde therein.
Dependencies are inferred from the claim text.