Continuous process for obtaining glass, comprises loading raw materials in upstream of a furnace along which number of burners are placed, obtaining a mass of molten glass, and moving the molten glass mass towards a furnace area

摘要

The continuous process comprises loading raw materials in upstream of a furnace along which number of burners are placed, obtaining a mass of molten glass, moving the molten glass mass towards a furnace area located further downstream, and forming a glass sheet having a chemical composition. One of the burners is placed at the area, which is fed with an over-stoichiometric quantity of combustive fuel. The furnace comprises aerial burners arranged at the side walls of the furnace, and each of aerial burners is capable of developing a flame transversely to the furnace axis. The continuous process comprises loading raw materials in upstream of a furnace along which number of burners are placed, obtaining a mass of molten glass, moving the molten glass mass towards a furnace area located further downstream, and forming a glass sheet having a chemical composition. One of the burners is placed at the area, which is fed with an over-stoichiometric quantity of combustive fuel. The furnace comprises aerial burners arranged at the side walls of the furnace, and each of aerial burners is capable of developing a flame transversely to the furnace axis. The aerial burners are regularly arranged from upstream to downstream of the furnace, and are arranged in pairs facing each other. The burners of each pair work alternately so that at a given time only the burners are arranged in a side wall develop a flame. The furnace further comprises 6-8 pairs of burners. Only two or three pairs of burners are located further downstream. The last pair of burners situated further downstream is fed with over-stoichiometric amount of combustive fuel. A first tank is arranged for defining a glass melting area and refining area. A second tank is arranged for defining a cooling area of molten glass. All burners are arranged at the level of first tank. Individual burner fed with an over-stoichiometric quantity of combustive fuel is located at the refining area of the glass. The burners are fed with air and fuel. The fuel is natural gas and/or fuel oil. The over-stoichiometric quantity of combustive fuel is such that the molar ratio of oxygen/fuel is 1.1-1.3. The glass sheet is formed on a tin bath by floating. An independent claim is included for a glass sheet.