BURNERS FOR GLASS-MELTING FURNACES ORIENTED AT ANGLE UPWARDS Russian patent published in 2019 - IPC C03B5/235 

FIELD: chemistry.

SUBSTANCE: invention relates to production of glass and glassmaking furnaces. Proposed method comprises feeding material of glass charge into furnace including rear wall and front wall facing each other and two side walls. Four walls form a chamber, a canopy above the chamber, which is in contact with four walls, at least one hole, through which material to be melted can be supplied into the chamber, at least one hole in the front wall, through which molten glass can be removed from the chamber, and a layer of molten glass inside the chamber in contact with inner parts of four walls. Supply of gaseous oxidizer with oxygen content of at least 21 vol. % and fuel is fed into a burner located in a hole in the side wall, which is in range from 35 % to 65 % of the distance from the upper surface of molten glass to the top of the side wall. Burner is oriented so that to produce a flame passing inside the chamber to the canopy along the line which forms an angle exceeding zero degrees making up to 15 degrees relative to the horizontal plane passing through the burner. In combustion, visible flame areas do not contact with opposite side wall, do not contact with molten glass and do not contact with dome. Gaseous oxidant and fuel are fed into burner at different heights above molten glass. Fuel and part of said gaseous oxidant are fed above the level whereto gaseous oxidant is supplied in amount required in compliance with stoichiometric balance. As a result of combustion on upper surface of flame or near it a layer is formed, which contains unburnt fuel, partially burnt fuel and products formed as a result of partial combustion of fuel, and in which total amount of unburned fuel, partially burnt fuel and products formed as a result of partial combustion of fuel, exceeds their number in areas of flame below this layer.

EFFECT: preventing the formation of nitrogen oxides and breaking the roof above the furnace.

3 cl, 6 dwg