Heating – Processes of heating or heater operation – Including melting – vaporizing – sintering – expanding...
Patent
1991-09-30
1993-04-06
Yuen, Henry C.
Heating
Processes of heating or heater operation
Including melting, vaporizing, sintering, expanding...
431181, 431187, 431 10, 431 8, 110265, F27B 1400, F23M 304, F23C 500
Patent
active
051998670
ABSTRACT:
The present invention provides a burner for burning a fuel in an oxidant. In accordance with the apparatus, a fuel nozzle is provided for producing a fuel jet of the fuel adapted to burn within the oxidant with the flame extending outwardly from the fuel nozzle and such that the particles of fuel become increasingly more buoyant along the length of the flame. A lower oxidant nozzle is located below the fuel nozzle for creating a lower oxidant jet of the oxidant that produces a low-pressure field below the fuel jet for downwardly spreading the fuel into the oxidant. Additionally, an upper oxidant nozzle is located above the fuel and lower oxidant nozzles for creating an upper oxidant jet of the oxidant to burn the increasingly more buoyant particles of the fuel. The velocities of the upper and lower oxidant jets can be adjusted independently of their mass flow rates to adjust the flame shape from sharp (convection dominated) to lazy (radiation dominated) without changing the stoichiometry of the flame. Additionally, the present invention provides a furnace containing such a burner for heating a melt confined between bottom and sidewalls of the furnace.
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Cassett Larry R.
Rosenblum David M.
The BOC Group Inc.
Yuen Henry C.
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