| abstract |
An industrial glass furnace comprising: an furnace comprising an electrothermal heat exchanger, a regenerator, an electrical boost, or other device for providing heat to a glass batch material; At least one staged combustion oxy-fuel burner is mounted to the ceiling of the furnace to provide fuel flow to the oxy fuel burner, to inject fuel and oxidant into the furnace, and to burn the fuel so that at least a portion of the combustion Applied in the vicinity of the glass forming material provides heat for melting the glass batch material by improving heat convection and radiation to the glass forming material without substantially disturbing the glass forming material. In one embodiment, the oxy-fuel burner is adapted to inject liquid fuel. In a variant embodiment, the oxy-fuel burner is adapted for fuel staged combustion and includes at least one outer oxidant injector and two inner fuel injectors, the innermost fuel injector being applied for high speed fuel injection, and Another fuel injector disposed between the innermost fuel injector and the outer oxidant injector is applied for low speed fuel injection. |