公开(公告)号：US3660276A

公开(公告)日：1972-05-02

申请号：US3660276D

申请日：1969-03-20

Applicant: GAS COUNCIL

Inventor： LACEY JOHN ALDWYN

IPC: C10G49/00 ,  C10G67/06 ,  C10G23/00 ,  C10G31/14

CPC classification number: C10G67/06 ,  C10G49/007

Abstract: IN A PROCESS FOR DESULPHURISING HYDROCARBON DISTILLATE OILS, A MIXTURE OF THE OIL VAPOUR AND A CARBON OXIDE-CONTAINING HYDROGENATING GAS IS PASSED OVER (A) A HYDRODESULPHURISATION CATALYST AND THEN (B) A MATERIAL CAPABLE OF ABSORBING HYDROGEN SULPHIDE AND RAPIDLY ELIMINATING ANY CARBONYL SUPHIDE PRESENT EITHER BY ABSORBING THE CARBONYL SULPHIDE OR BY CONVERTING IT TO HYDROGEN SULPHIDE AND ABSORBING THE HYDROGEN SULPHIDE. THE HYDROGENATING GAS MAY BE A LEAN GAS, A TOWN GAS, A RICH GAS, OR A SUBSTITUTE NATURAL GAS PRODUCED BY STEAM REFORMING THE DESULPHURISED DISTILLATE OIL. THE MATERIAL USED IN STAGE (B) IS PREFERABLY ZINC OXIDE. THE PROCESS IS CAPABLE OF ATTAINING A VERY HIGH DEGREE OF PURIFICATION (E.G. 0.2 P.P.M. OR LESS). WHEN A HIGH DEGREE OF PURIFICATION CANNOT BE ATTAINED BY USE OF A SINGLE PAIR OF STAGES (A) AND (B), THE DESIRED DEGREE OF PURIFICATION CAN BE ATTAINED BY PASSING THE MIXTURE OVER (C) A ZINC OXIDE-COPPER OXIDE COMPOSITION OR BY REPEATING THE STAGES (A) AND (B).