C10G 21/04
Refining of hydrocarbon oils in the absence of hydrogen, by extraction with selective solvents with two or more solvents, which are introduced or withdrawn separately by introducing simultaneously at least two immiscible solvents counter-current to each other
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Edits on 16 Mar, 2022
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C10G 21/04
Refining of hydrocarbon oils in the absence of hydrogen, by extraction with selective solvents with two or more solvents, which are introduced or withdrawn separately by introducing simultaneously at least two immiscible solvents counter-current to each other
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