L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Thierry Duboudin

Louis C Philippe

Eric L Duchateau

Bernard Labegorre

Serge Laurenceau

Jean-Yves Iatrides

Mohammed Youbi-Idrissi

Antony Dallais

Celso Zerbinatti

Maxime Lambert

Combustion process in a furnace comprising a floor on which a charge to be heated is placed, and a roof lying above the charge, in which process the combustible fluid and the oxidizer fluid are injected separately between the surface of the charge and the roof, characterized in that the oxidizer and the fuel are injected at two different levels and in that the ratio of the impulsive forces (m.sub.2.v.sub.2 /m.sub.1.v.sub.1) of the combustible and oxidizer fluids is greater than or equal to approximately 1/3, m.sub.1 being the mass flow rate of the top fluid and v.sub.1, its velocity of injection into the furnace, m.sub.2 being the mass flow rate of the bottom fluid and v.sub.2 its velocity of injection into the furnace.

Combustion process using separate injections of fuel and of oxidizer

An oxyburner (1) is associated with an opening (3) comprising a through passage (2) comprising a substantially cylindrical inlet region (5) receiving the downstream end of the oxyburner (1) and a substantially cylindrical outlet region (4) of a diameter D.sub.s and a length L.sub.s, the ratio D.sub.s /D.sub.e being comprised between 1.5 and 2.5 and the ratio L.sub.s /(D.sub.s -D.sub.e) comprised between 2 and 7. The speed of ejection of the oxygenated combustible gas is greater than 5 meters/second and the speed of ejection of the combustible gas is greater than the speed of the combustion-supporting gas.

Working hole for oxyburner, oxyburner assembly comprising such a working

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Vincennes, France

Thierry Duboudin