NOVELTY - A feed stream is supplied to hydroprocessing reactor, and effluent liquid stream and a separate gas stream are produced. The effluent gas stream is compressed and compressed recycle gas stream is cooled. Cooled stream is contacted with lean liquid solvent stream to absorb methane and heavier hydrocarbon, and hydrogen rich gas stream is produced. Hydrogen rich gas stream is added to reactor feed stream as recycle gas stream. The rich liquid solvent stream is flashed to produce lean liquid solvent stream, and methane and heavier hydrocarbon gas product stream is produced.    USE - For hydrogenating feed stream and producing hydrogen rich gas stream.    ADVANTAGE - The hydrogen partial pressure in feed stream supplied to hydroprocessor is increased.    DETAILED DESCRIPTION - A feed stream comprises heavy hydrocarbon liquid component and hydrogen gas input component is supplied to hydroprocessing reactor. The hydrogen gas input component comprises a recycle-hydrogen gas stream and a make-up hydrogen gas stream. The hydroprocessing reactor produces effluent liquid stream and a separate gas stream comprising unreacted hydrogen, methane and the heavier hydrocarbon. The effluent gas stream is compressed in a recycle gas compressor to produce a compressed recycle gas stream. The compressed recycle gas stream is cooled to 30degreesF (-1.1degreesC) to -40degreesF (-40degreesC). The cooled stream is contacted with a lean liquid solvent stream comprising 4-5C hydrocarbon component in an absorption zone to absorb methane and heavier hydrocarbon from compressed recycle gas stream, and hydrogen rich gas stream containing 90-99 mol% of hydrogen and a rich liquid solvent stream is produced. The hydrogen rich gas stream is recovered from the absorption zone, and added to the hydroprocessing reactor feed stream as recycle gas stream. The rich liquid solvent stream is flashed in at least one flashing stage to produce lean liquid solvent stream comprising 4-5C hydrocarbon component contained in compressed recycle gas stream, and methane and heavier hydrocarbon gas product stream is produced.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic flow diagram of hydrocracking process.    Hydrocracker reactor (10)    Bed (12)    Combined stream (14)    Vacuum gas oil stream (16)    Portion of stream (18)