Engie

Gaz De France-(gdf) Service National

Gaz De France

Thierry Bellin-Croyat

Neil Fricker

Thierry Landais

Isabelle Alliat

Richard Stanley Pont

Thierry Laplace

An end-fired melting furnace and a method of melting raw materials by an end-fired melting furnace are provided, where the furnace includes a melting tank, a melting chamber, first and second ports, at least one burner, and at least one auxiliary fuel injector arranged in the end-fired melting furnace in a roof or in first and second side walls so that the at least one auxiliary fuel injector introduces a fraction X2 of auxiliary fuel, in a direction of re-circulating combustion products, without additional oxidiser, into the re-circulating combustion products in a direction of a flow of the re-circulating combustion products, and with a chosen velocity such that the fraction X2 of auxiliary fuel mixes with the re-circulating combustion products before being combusted by oxidiser entering the furnace.

Combustion method applied to melting materials such as glass in an end-fired furnace

The invention relates to a radiant device with a burner of the &ldquo;glove finger&rdquo; type, comprising an exchanger ( ) for heating air (T ) by the burned gases (T ), a furnace tube ( ) drilled with air-intake orifices ( ) and terminated by a nozzle ( ) disposed facing a recirculation tube ( ), and a central gas-injection tube ( ). According to the invention, the central injection tube ( ) is fed with gaseous fluids in proportions that can be regulated by means of one or two valves ( ), via two conduits ( ), the first ( ) of which transports at least gas and the second ( ) of which transports at least air, and the central injection tube ( ) ends at a burner ( ), which is disposed in the furnace tube ( ) and which discharges at the level of the nozzle ( ), this arrangement making it possible to adapt existing devices very easily for the purpose of reduced production of nitrogen oxides.

Radiant device with gas burner and recirculation, adapted in view of reduced production of nitrogen oxides

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Montmorency, France

Thierry Bellin-Croyat