Downward Firing Oxygen-Fuel Burners for Glass Melting Furnaces
OwnerZhifa Zhang, Hao Yanginventors
Life of this patent
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Abstract
This invention relates to a glass melting furnace with downward firing oxygen-fuel burners placed in the breast walls of the combustion space and adjacent to the skew block. The downward firing oxygen-fuel burner may be placed at an angle so that the oxygen-fuel flame from the downward firing oxygen-fuel burner impinges on the upper surface of the glass bath. The placement and angle of the downward firing oxygen-fuel burner may maximize the amount of heat transferred to the batch cover or the molten glass, ensure the formation of high quality glass products, and protect the integrity of the downward firing oxygen-fuel burners and the glass melting furnace.
Claims25
A furnace for melting a solid mixture in order to provide a molten product, the furnace comprising
- a bath enclosure holding the molten product;
- a combustion space above the bath enclosure, the combustion space having a front wall, a rear wall, breast walls, and a roof supported by a skew block placed atop each breast wall;
- and
- a downward firing burner with a longitudinal axis
- wherein the downward firing burner is placed in the breast wall of the combustion space at a location and an angle inclined downwardly from a horizontal plane.
A downward firing burner for transferring heat to materials in a bath enclosure, the burner comprising
- an inner fuel conduit;
- and
- a concentric outer oxidant conduit surrounding the inner fuel conduit
- wherein the burner has a longitudinal axis and is placed at a location and an angle in a breast wall of a furnace such that the heat transferred to the materials in the bath enclosure is maximized.
A glass melting furnace for producing a molten glass product, the glass melting furnace comprising
- a glass bath holding the molten glass;
- a combustion space above the glass bath, the combustion space having a front wall, a rear wall, breast walls, and a roof supported by a skew block placed atop each breast wall;
- and
- a downward firing oxygen-fuel burner with a longitudinal axis
- wherein the downward firing oxygen-fuel burner is placed in the breast wall of the combustion space at a location and an angle inclined downwardly from a horizontal plane.
A method of producing molten glass in a glass melting furnace, the method comprising the steps of
- providing a glass bath;
- providing a combustion space above the glass bath, the combustion space having a front wall, a rear wall, breast walls, and a roof supported by a skew block placed atop each breast wall;
- providing a downward firing oxygen-fuel burner with an inner fuel conduit surrounded by a concentric outer oxidant conduit, the downward firing oxygen fuel burner having a longitudinal axis;
- placing the downward firing oxygen-fuel burner in the breast wall of the combustion space at a location and an angle;
- injecting a jet of gaseous fuel having a fuel velocity through the inner fuel conduit;
- injecting a jet of oxidant having an oxidant velocity through the concentric outer oxidant conduit;
- and
- combining the gaseous fuel and the oxidant to produce an oxygen-fuel flame that impinges on the upper surface of the glass bath.
Dependencies are inferred from the claim text.