Dry injection flue gas desulfurization process

Details Dry injection flue gas desulfurization process Dry injection flue gas desulfurization process

1984-07-24

1985-11-26

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423242, B01J 800, C01B 1700

Patent

active

045553912

ABSTRACT:
YUtilization of a soda-type dry sorbent in a dry injection flue gas desulfurization process is increased, without sacrifice in the SO.sub.2 removal efficiency, by reinjecting a portion of the sorbent collected in the baghouse filter back into the hot flue gas stream along with fresh sorbent; the recycled sorbent is optionally cooled below the bag filter temperature prior to its reinjection.

REFERENCES:
patent: 3852410 (1974-12-01), Rivers et al.
patent: 3880629 (1975-04-01), Dulin et al.
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patent: 4197278 (1980-04-01), Gehri et al.
patent: 4324770 (1982-04-01), Bakke
L. J. Muzio et al, "22 MW Coal-Fired Demonstration of Dry SO.sub.2 Scrubbing with Sodium Sorbent Compounds", Second EPRI Conference on Fabric Filter Technology for Coal-Fired Power Plants, Denver, Colo., (Mar. 1983).

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