Sorbents for the oxidation and removal of mercury

Details Sorbents for the oxidation and removal of mercury Sorbents for the oxidation and removal of mercury

B - Operations, Transporting

01

D

B01D 53/02 (2006.01) B01D 53/64 (2006.01) F23J 15/00 (2006.01)

Patent

CA 2757309

A promoted carbon and/or non-carbon base sorbent are described that are highly effective for the removal of mercury from flue gas streams. The promoted sorbent comprises a carbon and/or non- carbon base sorbent that has reacted with and contains forms of halogen and halides. Optional components may be added to increase and/or preserve reactivity and mercury capacity. These may be added directly with the base sorbent, or in-flight within a gas stream (air, flue gas, etc.), to enhance base sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The promoted sorbent can be regenerated and reused. Base sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active base sorbent into the mercury contaminated gas stream are described.

L'invention concerne un sorbant amélioré à base de carbone et/ou sans carbone, très efficace pour l'élimination du mercure de courants d'effluents gazeux. Le sorbant amélioré comprend un sorbant à base de carbone et/ou sans carbone, qui a réagi avec des formes d'halogène et d'halogénures et qui les contient. Des composants facultatifs peuvent être ajoutés pour augmenter et/ou préserver la réactivité et la capacité au mercure. Ceux-ci peuvent être ajoutés directement au sorbant de base, ou au vol dans un courant gazeux (air, effluents gazeux, etc.) pour amplifier la performance du sorbant de base et/ou la capture du mercure. L'efficacité d'élimination du mercure obtenue dépasse celle des procédés classiques. Le sorbant amélioré peut être régénéré et réutilisé. Des procédés de traitement et de préparation du sorbant de base sont également décrits. De nouveaux procédés de préparation au vol, d'introduction et de contrôle du sorbant de base actif dans le courant gazeux contaminé au mercure sont décrits.

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