Method for desulfurizing off-gases

Details Method for desulfurizing off-gases Method for desulfurizing off-gases

B - Operations, Transporting

01

D

B01D 53/52 (2006.01) B01D 53/84 (2006.01) C01B 17/05 (2006.01)

Patent

CA 2295443

The invention relates to a method for removing H2S from off-gases which contain at least 20 % by volume of water vapor, comprising treating the off- gases at a temperature above the water dew point of the off-gases with an aqueous, alkaline solution under absorption of the H2S, followed by subjecting the sulfide-containing solution formed to a biological oxidation of the sulfide.

L'invention concerne un procédé d'élimination du H¿2?S dans les effluents gazeux renfermant au moins 20 % en volume de vapeur d'eau. Ce procédé consiste à prendre les effluents gazeux à une température dépassant le point de rosée de l'eau des effluents gazeux, à réaliser une absorption du H¿2?S au moyen d'une solution alcaline aqueuse, et à soumettre à oxydation biologique du sulfure la solution sulfurée formée.

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