Low NOx mixed injector
AssigneesSaint-Gobain Emballage, Saint-Gobain Glass France
InventorsPatrice Rouchy, Laurent Garnier, Joseph Vernaz, Carlos Mazzotti De Oliveira
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Abstract
The invention relates to a combustion method for glass melting, in which a flame is created both by a liquid fuel pulse and a single gaseous fuel pulse, characterized in that the fraction of the total power due to the liquid fuel varies between 20 and 80%, and in that the specific gaseous fuel pulse is limited to a value that is sufficiency low so that the NOx content of the flue gases produced does not exceed 800 mg/Sm3 for a cross-fired furnace and 600 mg/Sm3 for an end-fired furnace; an injector for implementing this method; a burner comprising one or more such injectors; a furnace comprising at least one such burner.
Claims9
A combustion method comprising igniting a liquid fuel pulse and a single gaseous fuel pulse ejected from an injector to create a flame, wherein
- the fraction of the total power due to the liquid fuel varies between 20 and 80%, and the specific gaseous fuel pulse is not more than 3 N/MW,
- the NOx content of the fuel gases produced does not exceed 800 mg/Sm3 for a cross-fired furnace and 600 mg/Sm3 for an end-fired furnace,
- the injector comprises a duct system that consists of a liquid fuel inlet duct, a coaxial fluid inlet duct, and a single coaxial gaseous fuel inlet duct,
- the liquid fuel inlet duct is circumscribed in the coaxial fluid inlet duct, and the coaxial fluid inlet duct is itself circumscribed in the single coaxial gaseous fuel inlet duct.
Dependencies are inferred from the claim text.