Low emission and low excess air system

Details Low emission and low excess air system Low emission and low excess air system

F - Mech Eng,Light,Heat,Weapons

23

K

F23K 1/00 (2006.01) F23N 5/00 (2006.01)

Patent

CA 2179505

A pulverized coal steam generator (10) employing low NO2 firing methods is operated at very low excess air levels. This is possible because the unburned carbon in the flyash is measured and the pulverizers (24) are adjusted to control the particles size of the pulverized coal and maintain a desired carbon level.

L'invention concerne un générateur de vapeur (10) alimenté avec du charbon pulvérisé, fonctionnant selon des procédés de chauffage à faible émission de NO¿x? et avec un très faible excès d'air. Ceci est rendu possible par la mesure du charbon non brûlé dans les cendres volantes et par le réglage du fonctionnement des pulvérisateurs (24) de charbon en vue de modifier la taille des particules de charbon pulvérisé, afin de maintenir le niveau de carbone souhaité.

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