Fluidized oxydesulfurization of coal

Details Fluidized oxydesulfurization of coal Fluidized oxydesulfurization of coal

1994-03-16

1996-06-25

Medley, Margaret

Fuel and related compositions

Coal treating process or product thereof

Removal of undesirable

44622, 44629, C10L 906, C10L 908

Patent

active

055295878

ABSTRACT:
The method of the subject invention comprises a method and apparatus for removing sulfur in coal prior to combustion. In a fluid bed reactor, coal particles pass through a gaseous medium of air and superheated steam in a fluidized state under pressure. A continuous spray of atomizing water forms an aqueous thin film on the coal particles moving in the fluid bed. The thin aqueous film oxides the sulfur compounds contained within the coal. Usable coal is discharged from the fluid bed reactor as a portion of the discharge gas is vented and a portion of discharge gas recycled.

REFERENCES:
patent: 3909212 (1975-09-01), Schroeder
patent: 4013426 (1977-03-01), Schroeder
patent: 4118201 (1978-10-01), Yan
patent: 4329156 (1982-05-01), Othmer
patent: 4486959 (1984-12-01), Chang
patent: 4681598 (1987-07-01), Godbold et al.
patent: 5036013 (1991-07-01), Wood et al.
Coal Desulfurization Prior to Combustion, Eliot Chemical Technology Review No. 113, Pollution Technology Review No. 45 1978.

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