Method of removing mercury from flue gases

Details Method of removing mercury from flue gases Method of removing mercury from flue gases

B - Operations, Transporting

01

D

B01D 53/64 (2006.01) B01D 53/00 (2006.01)

Patent

CA 2372474

A method of removing metallic mercury and ionic mercury from flue gases, especially of a power plant, is provided. A gas that contains sulfur dioxide, or other adequate amounts of sulfur in the form of H2S or COS and a gas that contains hydrogen, are conveyed to a catalyzer for producing a gas that contains elemental sulfur and hydrogen sulfide. This gas is conveyed to flue gas upstream of a separator, wherein mercury in the flue gas reacts with the sulfur and ionic sulfur in the gas and is separated out in the separator.

Divulgation d'une méthode pour éliminer du mercure métallique et du mercure ionique de gaz de carneau, particulièrement de ceux d'une centrale énergétique. Un gaz contenant du dioxyde de soufre, ou du soufre en quantité suffisante sous forme de H2S ou de COS, et un gaz contenant de l'hydrogène sont acheminés jusqu'à un catalyseur pour produire un gaz contenant du soufre élémentaire et du sulfure d'hydrogène. Ce gaz est acheminé jusqu'au gaz de carneau en amont d'un séparateur, où le mercure contenu dans le gaz de carneau réagit avec le soufre et le soufre ionique dans le gaz et est séparé dans le séparateur.

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