Continuous process for the desulphurization of carbonaceous resi

Details Continuous process for the desulphurization of carbonaceous resi Continuous process for the desulphurization of carbonaceous resi

1989-01-17

1990-01-16

Woodard, Joye L.

Distillation: processes, thermolytic

And refining char, e.g., desulfurizing coke

201 19, 201 31, 201 36, 201 44, 423461, C01B 3102

Patent

active

048941220

ABSTRACT:
A process for the desulphurization of residuals of petroleum distillation in the form of coke particles having an initial sulphur content greater than about 5% by weight. Desulphurization is effected by means of a continuous electrothermal process based on a plurality of sequentially connected fluidized beds into which the coke particles are successively introduced. The necessary heat generation to desulphurize the coke particles is obtained by using the coke particles as an electrical resistance in each fluidized bed by providing a pair of electrodes that extend into the fluidized coke particles and passing an electrical current through the electrodes and through the fluidized coke particles. A last fluidized bed without electrodes is provided for cooling the desulphurized coke particles after the sulphur level has been reduced to less than about 1% by weight.

REFERENCES:
patent: 2983673 (1961-05-01), Grove
patent: 3086923 (1963-04-01), Destremps et al.
patent: 3284317 (1966-11-01), Jahnig et al.
patent: 3929585 (1975-12-01), Grimmett
patent: 4160813 (1979-07-01), Markel et al.
patent: 4359451 (1982-11-01), Tipton

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