Liquid salt extraction of aromatics from process feed streams

Details Liquid salt extraction of aromatics from process feed streams Liquid salt extraction of aromatics from process feed streams

C - Chemistry, Metallurgy

07

C

260/715.2

C07C 7/10 (2006.01)

Patent

CA 1164892

ABSTRACT OF THE DISCLOSURE Liquid salts such as quarternary phosphonium and ammonium salts of halides, acids, or more complex anions can be utilized to extract aromatics from mixed aliphatic/ aromatic hydrocarbon feeds such as isomerization process feed streams, cat naphthas, lube stocks, and the like. Such salts show the required solubilities in various solvents to exhibit a distinct selectivity advantage over more commonly used extraction solvents such as sulfolane in the extraction of benzene and other aromatics from heptane and other aliphatic feedstreams.

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