Process for removing mercury from flue gases

Details Process for removing mercury from flue gases Process for removing mercury from flue gases

2005-04-12

2005-04-12

Silverman, Stanely S. (Department: 1754)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

C075S670000, C075S742000

Reexamination Certificate

active

06878358

ABSTRACT:
Process for removing mercury from flue gases of high-temperature plants, in particular power stations and waste incineration plants in which a bromine compound is fed to the multistage furnace and/or the flue gas in a plant section downstream of the furnace, the temperature during contact of the bromine compound with the flue gas being at least 500° C., preferably at least 800° C. The combustion is carried out in the presence of a sulphur compound, in particular sulphur dioxide. Subsequently to the furnace, the flue gas is subjected to an optional multistage cleanup for removing mercury from the flue gas, which cleanup comprises a wet scrubber and/or a dry cleanup.

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Shoichi, Takao et al; 2000197811 A; Patent Abstracts of Japan; Jul. 18, 2000.

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