Dearsenating of shale oil with polyacrylamides
AssigneePhillips Petroleum Company
InventorPaul R. Stapp
Life of this patent
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Abstract
Arsenic impurities are removed from a hydrocarbon-containing feed stream, preferably shale oil, by contacting it with an aqueous solution of a polyacrylamide.
Claims21
A process for removing at least a portion of arsenic impurities from a hydrocarbon-containing feed stream, which contains arsenic compounds, comprising the step (a) of contacting said feed stream with an aqueous extractant, which contains at least one substantially dissolved polyacrylamide, under suitable dearsenating conditions so as to produce a hydrocarbon-containing stream having a reduced level of arsenic.
A process for reducing the arsenic content of an arsenic containing hydrocarbon feed stream, said process comprising:
- (a) contacting said feed stream with an aqueous extractant, which contains at least on substantially dissolved polyacrylamide, to form a two-phase liquid mixture,
- (b) separating said two-phase liquid mixture first into a hydrocarbon material having reduced arsenic content (as compared to said hydrocarbon feed stream) and an aqueous stream, and then
- (c) recovering said hydrocarbon material having a reduced arsenic content.
Dependencies are inferred from the claim text.