Liquid purification or separation – Processes – Chemical treatment
Patent
1997-04-30
1999-04-06
Woo, Jay H.
Liquid purification or separation
Processes
Chemical treatment
210752, C02F 172
Patent
active
058913467
ABSTRACT:
The invention provides a process for treating a sulfide-containing alkaline aqueous effluent, which includes subjecting it to a wet air oxidation treatment which oxidizes sulfide ions to environmentally acceptable sulfur acid ions, the oxidation being carried out in two or more chambers connected in series, flow of effluent between the chambers being effected at least primarily by gravity such that the pressures in the respective chambers can be maintained at substantially the same value.
REFERENCES:
patent: 3054602 (1962-05-01), Proudman
patent: 3761409 (1973-09-01), McCoy et al.
patent: 3849536 (1974-11-01), Morgan et al.
patent: 3945918 (1976-03-01), Kirk
patent: 3963611 (1976-06-01), Dardene-Ankringa, Jr.
patent: 4179365 (1979-12-01), Sumi
patent: 4347144 (1982-08-01), Bodenbenner et al.
patent: 4372940 (1983-02-01), Brandenburg et al.
patent: 4415452 (1983-11-01), Heil et al.
patent: 4417986 (1983-11-01), Connaught et al.
patent: 4584107 (1986-04-01), Odaka et al.
patent: 4666689 (1987-05-01), Maple et al.
patent: 4746434 (1988-05-01), Grieves et al.
patent: 4793931 (1988-12-01), Stevens et al.
patent: 4948511 (1990-08-01), Swanson et al.
patent: 5080793 (1992-01-01), Urlings
patent: 5244576 (1993-09-01), DeRoeck et al.
patent: 5368726 (1994-11-01), Masoomian
A.G. Smith, "Ridding Process Waters and Caustic Solutions of Sulphide", Oil and Gas Journal, Jul. 9, 1956, pp. 95-99.
J.D. Martin and L.D. Levanus, "New Column Removes Sulfide with Air", Hydrocarbon Processing and Petroleum Refiner, 41 May 1962, pp. 149-153.
Otto Abegg, "A Plant for the Oxidation of Sulphide-Containing Refinery Wastes by Air", Erdol and Kohl, Erdgas, Petrochemie, vol. 14, No. 8, pp. 621-626 (1961).
Otto Abegg and Johannes Elster, "A Plant for the Oxidation of Sulphide-Containing Refinery Wastes by Air", Erdol and Kohl, Erdgas, Petrochemie, vol. 15, No. 9, pp. 721-722 (1962).
Yi-Shon Chen and P. Douglas Burgess, "Spent Caustic Treatment and Disposal", Proceedings of the 42nd Industrial Waste Conference, May 1987.
M. Sitting, "Petroleum Refining Industry", Engergy Saving and Environmental Control, .COPYRGT.1978.
Morrison Betsey J.
Stone & Webster Engineering Limited
Woo Jay H.
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