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US 8,940,956 B2Granted
Methods and systems for processing crude oil using cross-flow filtration
AssigneePall Corporation
InventorThomas Harris Wines
Life of this patent
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Abstract
Methods and systems for processing crude oil comprise adding water to the crude oil to produce an emulsion comprising brine and oil and solids; separating oil from brine including producing brine comprising a rag layer; separating the rag layer into a hydrocarbon emulsion having finer solids and brine comprising larger solids; and passing the hydrocarbon emulsion along a cross-flow filter to produce a retentate comprising brine and solids and a permeate comprising hydrocarbon.
Claims10
A method of processing crude oil comprising:
- adding water to the crude oil to produce oil and brine and a rag layer including an emulsion comprising brine and oil and solids;
- separating oil from brine including producing brine comprising the rag layer;
- separating the rag layer into a hydrocarbon emulsion having finer solids and brine comprising larger solids;
- and
- passing the hydrocarbon emulsion and finer solids along a cross-flow filter to produce a retentate comprising brine and solids and a permeate comprising hydrocarbon.
2 more elements
A method of processing crude oil comprising:
- passing the crude oil through a desalter, including separating oil from brine comprising a rag layer and removing the brine comprising a rag layer from the desalter via a first port and removing the oil via a second port;
- passing the brine comprising the rag layer through a separator including separating the rag layer into a hydrocarbon emulsion having finer solids and brine comprising larger solids, including removing the brine comprising larger solids from the separator via a third port and removing the hydrocarbon emulsion and finer solids from the separator via a fourth port;
- and
- filtering the hydrocarbon emulsion and finer solids using a cross-flow filter to produce a retentate comprising brine and solids and a permeate comprising hydrocarbon, including removing the retentate from the cross-flow filter via a fifth port and removing the permeate from the cross-flow filter via a sixth port.
1 more element
Dependencies are inferred from the claim text.