Method and afterburner apparatus for control of highly...

F - Mech Eng,Light,Heat,Weapons – 23 – G

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F23G 7/06 (2006.01) B01D 53/72 (2006.01) B01D 53/86 (2006.01) B01J 8/00 (2006.01) B01J 8/04 (2006.01) F23C 13/00 (2006.01) F23G 5/16 (2006.01) F23G 5/50 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2167310

Methods and apparatus are provided for destruction of volatile organic compounds ("VOC's") from process fumes having variable amounts of such VOC's wherein a nominal amount of the fumes are passed through an oxidizer (24) for destruction of the VOC's and the hot products from the oxidizer (24) are fed to an afterburner (30) that is principally made up of a matrix bed of heat resistant material. The heat from the oxidized gases heats the matrix bed. Fume flows exceeding the nominal flow are bypassed directly to an inlet port of the afterburner where they are passed through the matrix bed of the afterburner, which has been heated by the oxidized gases from the oxidizer (24) and are combusted into additional gaseous products in a combustion wave. The system allows for utilisation of the heat produced from the oxidation of the nominal flow for destructing fume flows that exceed the nominal flow.

L'invention concerne des méthodes et un appareil d'élimination des composés organiques volatils ("COV") contenus en quantités variables dans les vapeurs produites en usine. On fait passer une quantité nominale de ces vapeurs à travers un agent d'oxydation pour éliminer les COV, et les produits chauds après passage dans cet oxydant sont acheminés vers une chambre de post-combustion constituée essentiellement d'un lit matrice en matériau réfractaire. La chaleur émanant des gaz oxydés chauffe le lit matrice. Les excédents de flux de vapeur par rapport au flux nominal sont dérivés directement vers un orifice d'entrée de la chambre de post-combustion, chauffée préalablement par les gaz oxydés émanant de l'agent d'oxydation, et forment en brûlant d'autres produits gazeux dans une vague de combustion. Le système permet d'utiliser la chaleur produite par oxydation du flux nominal pour éliminer l'excédent de flux de vapeur.

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