Process and apparatus for oxygen enrichment in fuel...

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

Patent

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F23D 1/00 (2006.01) F23L 7/00 (2006.01) F23N 5/00 (2006.01)

Patent

CA 2509631

An improved process for burning solid fuel particles in a combustion chamber and creating a flue gas is disclosed. The method comprises creating a fuel gas stream by mixing the solid fuel particles with a conveying gas, transporting the fuel gas stream through a fuel duct terminating at the combustion chamber at a fuel exit plane and injecting an oxygen stream through an injection device into said fuel gas at an oxygen injection location selected to create a mixing zone to mix the oxygen stream and the fuel gas stream immediately prior to or coincident with combustion of the fuel. Operating parameters of the process can be varied to optimally reduce NO X emissions.

L'invention concerne un procédé amélioré permettant de brûler des particules de combustible solides dans une chambre de combustion et de créer un gaz de combustion. Le procédé consiste à créer un courant de gaz combustible par mélange des particules de combustible solides avec un gaz de transport, à transporter le courant de gaz combustible par une conduite de combustible se terminant dans la chambre de combustion au niveau d'un plan de sortie de combustible et à injecter un courant d'oxygène par le biais d'un dispositif d'injection dans le gaz combustible à un emplacement d'injection d'oxygène choisi de manière à créer une zone de mélange conçue pour mélanger le courant d'oxygène et le courant de gaz combustible immédiatement avant ou en même temps que la combustion du combustible. Les paramètres d'exploitation peuvent varier de manière à réduire les émissions de NO¿x? de façon optimale.

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