Production of activated char using hot gas

Details Production of activated char using hot gas Production of activated char using hot gas

C - Chemistry, Metallurgy

01

B

C01B 31/10 (2006.01)

Patent

CA 2600875

A gas mixture preheated to high temperatures using an oxy-fuel, an oxygen- enriched air-fuel or an air-fuel burner is used to devolatilize and partially oxidize carbonaceous feedstock, thereby producing an active residual char that can be used in applications utilizing activated carbon. Use of hot gas and ground carbonaceous feedstock allows the equipment to be minimized, thereby allowing the activated carbon to be produced at or near points of use, for example the production of activated char at or near utility boilers for use in the reduction of mercury emissions from flue gas streams.

On utilise un mélange de gaz chauffé à haute température obtenu au moyen d'un brûleur d'oxygaz, de mélange air/combustible enrichi en oxygène ou d'air /combustible, pour dévolatiliser et oxygéner partiellement une charge carbonée et produire du carbone actif résiduel utilisable dans des applications requérant du charbon actif. L'utilisation de gaz chauds et d'une charge carbonée de base permet de réduire les équipements, et de produire le charbon actif sur ou au voisinage de lieux d'utilisation tels que par exemple les chaudières servant à réduire les émissions de mercure de certaines fumées industrielles.

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