Process for desulphurization of flue gas

Details Process for desulphurization of flue gas Process for desulphurization of flue gas

1986-11-26

1988-12-20

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

047924403

ABSTRACT:
In a process for purification, in particular desulphurization, of flue gas from the combustion of sulphur-containing fuel in a combustion furnace, fresh, alkaline absorption agent selected among oxides and hydroxides of calcium, magnesium and the alkai metals, is added in the flue gas channel from the combustion furnace, and the formed reaction product is separated from the flue gas.
By adding the absorption agent drily after adjusting the water-dewpoint of the flue gas and/or the temperature of the flue gas so that the distance between dewpoint temperature and flue gas temperature is 5.degree.-50.degree. C., preferably 10.degree.-20.degree. C., a very effective desulphurization is obtained.

REFERENCES:
patent: 3343908 (1967-09-01), Wickert
patent: 4509436 (1985-04-01), Schrofelbauer et al.
patent: 4519995 (1985-05-01), Schrofelbauer et al.
patent: 4559211 (1985-12-01), Feldman et al.
patent: 4590049 (1986-05-01), Staudinger
patent: 4603037 (1986-07-01), Yoon
G. M. Blythe et al., "Dry Systems," Flue Gas Desulphurization Technology, Feb. 1980, pp. 179-195.

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