Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1983-09-29
1986-02-18
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423244, C01B 1700, B01J 800
Patent
active
045713308
ABSTRACT:
Systems for desulfurization of a flue gas containing fly ash including formation of a dry powder in a spray dryer absorber resulting from reaction of an alkaline aqueous feed and the flue gas. The dry powder is collected and a specifically selected fraction is recycled to a feed preparation subsystem for inclusion in the aqueous feed. Selective recycle is based on physical or chemical properties and, for example, large diameter and dense particles provide enhanced reagent utilization compared to smaller and less dense particles.
REFERENCES:
patent: 4197278 (1980-04-01), Gehri et al.
patent: 4279873 (1981-07-01), Felsvang et al.
Haaland Harold H.
Krigmont Henry V.
Spencer, III Herbert W.
Stern Jay L.
Triscori Ronald J.
Heller Gregory A.
Joy Manufacturing Company
Levine Edward L.
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