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US 4,619,770 AGranted
Method and apparatus for recovering a fluid from a filter
AssigneePhillips Petroleum Company
InventorErnest B. Boston
Life of this patent
Estimating the term…
Abstract
A method and apparatus for recovering a product fluid from a filter, wherein a wash fluid is passed through the filter so as to yield a mixture of product fluid and wash fluid. The mixture is then phase separated in a phase separator into a first phase substantially comprising product fluid, and a second phase substantially comprising wash fluid.
Claims17
A method of recovering a first fluid, comprising sulfolane, from a filter in which it is trapped as a filtrate, comprising the steps of:
- (a) washing the filter by passing an aliphatic hydrocarbon wash fluid in the molecular weight range of about C.sub.5 to about C.sub.16 through the filter, the wash fluid and first fluid being substantially insoluble in each other and of different densities, wherein a first mixture containing wash fluid and first fluid results from said washing;
- and
- (b) phase separating the first mixture into at least two phases in a phase separator, wherein a first phase substantially comprises first fluid, and wherein a second phase substantially comprises wash fluid.
An apparatus comprising:
- a filter;
- means for passing a wash fluid through said filter, wherein any of a first fluid trapped in said filter is displaced from said filter to yield a first mixture substantially comprising wash fluid and first fluid;
- phase separator means for phase separating the first mixture into at least two phases, a first phase substantially comprising first fluid, and a second phase substantially comprising wash fluid;
- means for passing a second mixture, which includes first fluid, through said filter;
- valve means for allowing only one of said second mixture and said wash fluid to be passed through said filter at any one time;
- second separator means for receiving a third mixture which includes first fluid and at least one other fluid, said second separator means being capable of separating said at least one other fluid from the third mixture to yield the second mixture.
3 more elements
Dependencies are inferred from the claim text.