Burner for generating soot and furnace to deposit soot by using the same
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United States of America Patent
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-
Aug 24, 1993
Grant Date -
N/A
app pub date -
Mar 27, 1992
filing date -
Mar 28, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Prior to annealing of cold rolled stainless steel strip, soot is deposited on the surface of the stainless steel strip by a soot generating burner, and thereby the heat absorption efficiency of the stainless steel strip in the annealing furnace is increased to enhance the heat treatment capability in the annealing furnace. This soot generating burner forms a flame by injecting a premixed gas at low air ratio of fuel gas and pure oxygen or high oxygen enriched air from the nozzle opening, and an air injection port for injecting air for guiding the flame is formed on the outer circumference of the nozzle opening. By this guide air, the flame is guided to form, so to speak, an air curtain, and it is therefore possible to direct the flame efficiently to the surface of the stainless steel strip, thereby preventing the soot from depositing near the nozzle opening.
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