Fossil-fired steam generator with a nitrogen removal device...

F - Mech Eng,Light,Heat,Weapons – 22 – B

Patent

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Details

F22B 21/34 (2006.01) F22B 37/00 (2006.01) F23J 15/00 (2006.01)

Patent

CA 2377681

A steam generator (2) has a nitrogen removal device for fuel gas (G) and a combustion chamber (4) which is followed on the fuel-gas side, via a horizontal gas flue (6) and a vertical gas flue (8), by the nitrogen removal device (54) for fuel gas (G). The steam generator is to have a particularly low space requirement and ensure particularly reliably a removal of nitrogen from the fuel gases (G) of the fossil fuel (B). For this purpose, the combustion chamber has a number of burners (70) arranged level with the horizontal gas flue (6). Moreover, the vertical gas flue (8) is designed for an approximately vertical flow of the fuel gas (G) from the bottom upward and the nitrogen removal device (54) for fuel gas (G) is designed for an approximately vertical flow of the fuel gas (G) from the top downward.

L'invention concerne un générateur de vapeur (2) qui présente un dispositif de déazotage pour le gaz de chauffage (G) et une chambre de combustion (4), en aval de laquelle, côté gaz de chauffage, est monté le dispositif de déazotage (54) pour gaz de chauffage (G), par l'intermédiaire d'une zone de tirage de gaz horizontale (6) et d'une zone de tirage de gaz verticale (8). Le générateur de vapeur ne doit présenter qu'un encombrement particulièrement faible et garantir, de façon particulièrement fiable, un déazotage du gaz de chauffage (G) du carburant fossile (B). A cet effet, la chambre de combustion comporte une pluralité de brûleurs (70) disposés en hauteur dans la zone de tirage de gaz horizontale (6). En outre, la zone de tirage de gaz verticale (8) est conçue pour un écoulement sensiblement vertical du gaz de chauffage (G), de bas en haut, et le dispositif de déazotage (54) pour le gaz de chauffage (G) est conçu pour un écoulement sensiblement vertical du gaz de chauffage (G), de haut en bas.

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