Method of removing selenium from flue gases

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture

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Details

423508, B01D 4700, B01J 800, C01B 1900

Patent

active

051925141

ABSTRACT:
A method of removing gaseous selenium from a flue gas is disclosed. The method includes injecting an effective amount of ammonia into the flue gas to produce a solid selenium reaction product. The solid selenium reaction product is removed from the flue gas by undergoing deposition in a filter assembly. The filter assembly may then be cleaned through conventional methods.

REFERENCES:
patent: 2409835 (1946-10-01), Clark et al.
patent: 3966889 (1976-06-01), Kakuta et al.
patent: 4931073 (1990-06-01), Miller et al.
Andren, Anders W. and Klein, David H.; "Selenium in Coal-Fired Steam Plant Emissions"; Environmental Science & Technology; vol. 9, No. 9, Sep. 1975.
Ericzon, Christina et al; "Determination and Speciation of Selenium in End Products from a Garbage Incinerator"; Environ Sci. Technol, vol. 23, No. 12, 1989.
Felix, Larry G., Merritt, Randy L. and Duncan, Kent; "Improving Baghouse Performance"; APCA Journal, vol. 36, No. 9, Sep. 1986.

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