Selective removal and recovery of ammonia and hydrogen sulfide

Details Selective removal and recovery of ammonia and hydrogen sulfide Selective removal and recovery of ammonia and hydrogen sulfide

C - Chemistry, Metallurgy

10

G

196/132, 23/216

C10G 45/02 (2006.01) C07C 7/04 (2006.01) C07C 7/163 (2006.01) C10G 1/00 (2006.01) C10G 49/22 (2006.01) C10G 65/12 (2006.01) C10G 67/04 (2006.01) C10G 67/14 (2006.01)

Patent

CA 1185416

ABSTRACT OF THE DISCLOSURE A hydrocarbon material is subjected to severe hydrotreatment and washed with only enough water to absorb the bulk of the H2S but only a fraction of the NH3 present in the hydrocarbon material. The washed hydrotreated hydrocarbon material is separated from the water stream, and then a vapor phase is separated from the hydrocarbon material in a high pressure separator. The vapor phase is scrubbed with water to form an aqueous solution of NH3 which contains only a minor amount of H2S (an NH3 to H2S ratio of at least 6:1).

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