RECENT AIR LIQUIDE DEVELOPMENTS IN OXY FUEL FOR LARGE GLASS MELTING FURNACES

摘要

This paper presents the latest AIR LIQUIDE innovations for large glass melting furnaces. First AIR LIQUIDE has developed a new burner to go further into NOx emissions minimization and heat transfer flexibility: ALGLASS SUN~(TM) burner, which relies on a large separation of the fuel and oxidant streams. First tests of this technology in pilot and industrial furnaces have let appear a flexible and soft flame particularly adapted to glass process with a positive impact on glass quality and wall temperatures. AIR LIQUIDE has also developed some new numerical tools in particular a 1D software called GLASS 1D which enables to more efficiently orientate the start-up of 3D calculations. Finally, the third axis of development followed by AIR LIQUIDE is heat recovery in oxy fuel furnaces and especially the indirect preheating of the reactants with metallic recuperators.