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US 4,287,161 AGranted
Method for defoaming in gas purification systems
AssigneeMichigan Consolidated Gas Company
InventorJagdish M. Agrawal
Life of this patent
Estimating the term…
Abstract
Disclosed is the method of defoaming an aqueous amine gas purification scrubbing solution by stripping gaseous contaminants from the scrubbing solution and then passing a side stream of from about 10% to about 20% of the scrubbing solution through a carbon filter.
Claims2
In a method for purifying a gaseous mixture by removing contaminants therefrom with an aqueous ethanolamine scrubbing solution, the method of defoaming and regenerating the scrubbing solution comprising the steps of sequentially:
- (a) separating gaseous contaminants from said scrubbing solution by passing said scrubbing solution through a stripper still;
- (b) cooling said scrubbing solution;
- (c) dividing said scrubbing solution into a major stream and a minor stream, said minor stream comprising from about 10% to about 20% of flow by volume of said scrubbing solution;
- (d) passing said minor stream through an activated charcoal filter;
- and
- (e) combining said minor stream and said major stream to provide a regenerated scrubbing solution.
3 more elements
Dependencies are inferred from the claim text.