Premix burner system for low BTU gas fuel
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United States of America Patent
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Aug 4, 1981
Grant Date -
N/A
app pub date -
Apr 6, 1979
filing date -
Apr 6, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A premix-type gaseous fuel burning system for alternate or simultaneous combustion of low BTU gas and normal BTU gas comprises a gas supply means for providing both high BTU gas and low BTU gas at selected substantial velocity, and a burner tube for receiving said gas, whereby primary air is inducted into the burner tube and mixed with the gas flow. A burner head comprises a long narrow rectangular structure of tapered construction that is inserted upwardly into a corresponding rectangular opening in the floor of the furnace. The opening is also tapered in the same direction as the burner head, but with a selected annular spacing between the walls of the opening and the burner head. Means are provided for vertically adjusting the position of the burner head within the opening. Secondary combustion air is directed through the annular space between the burner head and the opening in the floor of a furnace.
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