Method for increasing the purity of hydrogen recycle gas

C - Chemistry – Metallurgy – 01 – B

Patent

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C01B 3/24 (2006.01) C01B 3/34 (2006.01) C01B 3/52 (2006.01) C10G 35/00 (2006.01) C10G 49/00 (2006.01)

Patent

CA 1092786

ABSTRACT OF THE DISCLOSURE Disclosed is a process for hydrotreating hydrocarbon feedstocks and for recovering from the resulting effluent stream selected hydrocarbon fractions, and hydrogen for recycle and other uses with improved purity. Relatively pure hydrogen is provided by separating the effluent stream into a hydrogen- containing gaseous stream and a liquid phase hydrocarbon product, and the contacting the gaseous hydrogen-containing stream in a first absorption step with the liquid phase hydrocarbon product obtained in the gas-liquid separation step, and in a second extraction step with a stabilized portion of the liquid phase hydrocarbon product.

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