Bioregenerative flue gas desulfurization process

Details Bioregenerative flue gas desulfurization process Bioregenerative flue gas desulfurization process

C - Chemistry, Metallurgy

12

S

C12S 5/00 (2006.01) B01D 53/34 (2006.01) B01D 53/50 (2006.01) B01D 53/84 (2006.01)

Patent

CA 2132372

ABSTRACT Flue gas is desulfurized using a bioregenerated reagent in a system in which flue gas, reagent and water are provided to an absorber means for producing a reaction in order for the reagent to absorb sulfur from the flue gas. The reagent from the absorber means is provided to a digester reactor wherein sulfur reducing bacteria are used to regenerate the reagent. Gases produced by the digester reactor, such as H2S, are collected by a gas collector for further processing. A separator is used to separate a product produced in the digester reactor into regenerated reagent and organic solids so that the regenerated reagent can be provided back into the absorber. A nutrient source such as an organic waste sludge from municipal waste water treatment plants can be used to promote growth of the sulfur reducing bacteria. Means are provided to monitor and control various parameters affecting bacteria growth, such as temperature, pH, oxygen content, and flow rate of the nutrient source into the digester reactor.

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