Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By plural serial diverse separations
Patent
1988-01-15
1990-08-28
Pal, Asok
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By plural serial diverse separations
208210, 208211, 208212, 208251H, 208254H, 2082621, 2082625, 585258, 585823, 585826, C07C 713, C07C 711, C07C 712
Patent
active
049527460
ABSTRACT:
A process for the removal of hydrogenatable hydrocarbonaceous compounds comprising a component selected from the group consisting of halogen, metal, sulfur, oxygen and nitrogen from a hydrocarbonaceous stream which comprises the steps of: (a) contacting the hydrocarbonaceous stream with an adsorbent to remove at least a portion of the hydrogenatable hydrocarbonaceous compounds from the hydrocarbonaceous stream to provide a hydrocarbonaceous stream having a reduced concentration of hydrogenatable hydrocarbonaceous compounds; (b) contacting spent adsorbent with an elution solvent to remove the hydrogenatable hydrocarbonaceous compounds from the spent adsorbent thereby regenerating the adsorbent; (c) contacting the elution solvent in admixture with the hydrogenatable hydrocarbonaceous compounds in the presence of hydrogen with a hydrogenation catalyst; (d) contacting the effluent with an aqueous scrubbing solution; (e) introducing a resulting admixture of the reaction zone effluent and the aqueous scrubbing solution into a separation zone to provide a hydrotreated elution solvent and a spent aqueous stream; and (f) recycling at least a portion of the hydrotreated elution solvent from step (e) to provide at least a portion of the elution solvent utilized in step (b).
REFERENCES:
patent: 3595931 (1971-07-01), Hay et al.
patent: 3892818 (1975-07-01), Scharfe et al.
patent: 3919398 (1975-11-01), Davis
patent: 4201665 (1980-05-01), Savage et al.
patent: 4578194 (1986-03-01), Reinartz et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, vol. 12, p. 999.
Hilfman Lee
Johnson Russell W.
Cutts, Jr. John G.
McBride Thomas K.
Pal Asok
Tolomei John G.
UOP
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