Method for generating combustion by means of a burner...

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

Patent

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Details

F23D 14/22 (2006.01) F23D 14/32 (2006.01)

Patent

CA 2734955

A method for generating combustion by means of a burner assembly (12) and corresponding burner assembly are disclosed. The burner assembly comprises a refractory block (12), a fuel supply system (18) and an oxidant supply system (20). The refractory block (12) defines along one plane P1 at least one fuel passageway (28A, 28B, 28C) extending from a fuel inlet port (28) to a fuel outlet port, and along a second plane P2 at least one oxidant passageway extending from an oxidant inlet port to an oxidant outlet port, said first and second planes intersecting along a line that is beyond said outlet ports, said oxidant supply system comprising a pair of oxidant supply means, an inlet of the inner oxidant supply means being connected to a source of a first oxidant having a first oxygen concentration and an inlet of the concentric outer oxidant supply means being connected to a source of a second oxidant having a second oxygen concentration, the method having improved flexibility in oxygen concentration in the oxidant.

L'invention concerne un procédé destiné à générer une combustion au moyen dun ensemble brûleur (12), ainsi quun ensemble brûleur correspondant. Lensemble brûleur comporte un bloc réfractaire (12), un système (18) dalimentation en combustible et un système (20) dalimentation en oxydant. Le bloc réfractaire (12) définit le long dun premier plan P1 au moins un passage (28A, 28B, 28C) de combustible sétendant dun orifice (28) dentrée de combustible à un orifice de sortie de combustible, et définit le long dun deuxième plan P2 au moins un passage doxydant sétendant dun orifice dentrée doxydant à un orifice de sortie doxydant, lesdits premier et deuxième plans se croisant le long dune ligne située au-delà desdits orifices de sortie, ledit système dalimentation en oxydant comportant une paire de moyens dalimentation en oxydant, une entrée du moyen intérieur dalimentation en oxydant étant reliée à une source dun premier oxydant présentant une première concentration doxygène et une entrée du moyen extérieur concentrique dalimentation en oxydant étant reliée à une source dun deuxième oxydant présentant une deuxième concentration doxygène, ce qui confère au procédé une souplesse accrue en termes de concentration doxygène dans loxydant.

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