Flue gas desulfurization process

Details Flue gas desulfurization process Flue gas desulfurization process

1985-03-22

1986-07-15

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423243, 423244, C01B 1700, B01J 800

Patent

active

046005684

ABSTRACT:
Flue gas is desulfurized by mixing into it at a temperature between about 120.degree. and about 230.degree. C. a finely divided sorbent such as calcium hydroxide and, immediately downstream of the mixing point, spraying the gaseous suspension with an aqueous solution of solubilizing agent such as a deliquescent compound or a strongly ionizing inorganic salt. In one embodiment, make-up sorbent is derived from injection of limestone or dolomite into the combustion zone, and in another embodiment a portion of the solids separated from the flue gas is reactivated for reuse as sorbent.

REFERENCES:
patent: 3632306 (1972-01-01), Villiers-Fisher et al.
patent: 3798309 (1974-03-01), Knowles et al.
patent: 4080428 (1978-03-01), Holter et al.
patent: 4454102 (1984-06-01), Lindau et al.
patent: 4533532 (1985-08-01), Gebhard et al.

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