Saint-Gobain Glass France

Saint-Gobain Emballage

Laurent Pierrot

Laurent Joubaud

Biagio Palmieri

Frederic Lopepe

David Galley

Philippe Pedeboscq

Philippe Meunier

Paula Goncalves-Ferreira

A furnace for melting batch materials, including, upstream in the direction of flow of the molten materials, a zone for introducing solid batch materials, and including a submerged burner and an overhead surface burner providing a flame that touches the surface of the glass at the point where the bubble from the submerged burner emerges. This association of an overhead, especially roof-mounted, burner and a submerged burner reduces the quantity of batch stones that may be sent toward the downstream end of the furnace.

Furnace with immersed burner and overhead burner

The invention relates to a method of combustion in a furnace provided with a burner comprising an inlet for oxidizer comprising between 10% and 30% of oxygen and an inlet for fuel terminating in the furnace outside the oxidizer inlet and at a distance therefrom of between 0.3 and 4 times the equivalent diameter of the oxidizer inlet, said oxidizer entering the furnace at a speed of between 10 and 60 m/s. This method permits a significant reduction in nitrogen oxide emissions and is suitable for glass furnaces in particular.

Dilute combustion

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Chalon sur Saone, France

Laurent Pierrot