Absorption of pollutant material from a polluted gas

Details Absorption of pollutant material from a polluted gas Absorption of pollutant material from a polluted gas

1983-02-18

1985-02-26

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423244, 55 73, C01B 1700

Patent

active

045017220

ABSTRACT:
In a method of absorbing pollutant material e.g. sulphur dioxide from a polluted gas, an aqueous suspension of a solid absorbent e.g. calcium hydroxide is sprayed into the gas; and the ambient conditions in the gas are such that all the water is evaporated and the absorption product is dried as it is formed. The spray droplet size is controlled to be a practical maximum consistent with maintaining the ambient conditions. The spray droplet size may be so controlled that the arithmetical average spray droplet lifetime is at least 80% of the theoretical maximum spray droplet lifetime consistent with maintaining the ambient conditions.

REFERENCES:
patent: 3885918 (1975-05-01), Isahaya
patent: 4269812 (1981-05-01), Edwards et al.
"SO.sub.2 Removal by Dry FGD"-Parsons et al., pp. 801-852.

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