Sonic injection furnace
AssigneesVerallia France, Saint-Gobain Glass France
InventorsFrédéric HAYAU, Laurent GARNIER
Life of this patent
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Abstract
A low-NOx end-fired furnace for melting glass equipped with an overhead burner includes an inlet duct for oxidizer, including 15% to 30% of oxygen, in its upstream wall, a duct for receiving the combustion flue gases in its upstream wall, and a sonic injection system including at least one injector for injecting a jet of a gas at a speed at least equal to 80% of the speed of sound, referred to as a sonic injector, opening into the upstream wall or opening into the duct for receiving the combustion flue gases, the sonic injector injecting its gas counter-current to the stream of the combustion flue gases that are heading toward the duct for receiving the combustion flue gases.
Claims16
An end-fired furnace for melting glass equipped with an overhead burner comprising an inlet duct for oxidizer, comprising 15% to 30% of oxygen, in its upstream wall, a duct for receiving the combustion flue gases in its upstream wall, and a sonic injection system comprising at least one sonic injector for injecting a jet of a gas at a speed at least equal to 80% of the speed of sound, opening into the upstream wall or opening into the duct for receiving the combustion flue gases, said sonic injector injecting its gas counter-current to a stream of the combustion flue gases that are heading toward the duct for receiving the combustion flue gases.
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Dependencies are inferred from the claim text.