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US 5,180,505 AGranted
Dewatering method
OwnerMarek J. Stefanski, Maria Stefanski +1inventors
InventorsMarek J. Stefanski, Maria Stefanski, Louis L. Sirois
Life of this patent
Estimating the term…
Abstract
A method to improve dewatering of filter cakes in a filtration process. The method involves introducing a surfactant as a vapor or mist into a flow of steam and treating the filter cake with this gaseous mixture.
Claims20
In a method of dewatering a filter cake, an improvement comprising the steps of:
- (a) supplying a flow of steam to the filtered cake;
- and
- (b) adding a surfactant to the steam whereby said surfactant is vaporized or dispersed into a fine mist and carried to the filter cake.
Dependencies are inferred from the claim text.