Method for supersonically injecting oxygen into a furnace
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United States of America Patent
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Nov 27, 2012
Grant Date -
Nov 13, 2008
app pub date -
Oct 23, 2006
filing date -
Nov 10, 2005
priority date (Note) -
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Abstract
The invention relates to a method and device for supersonically injecting oxygen into a furnace, in particular a cupola furnace, in which the total oxygen required for the furnace operation is injected with the aid of two distinct circuits, i.e., the first circuit comprising at least one supersonic oxygen injecting nozzle and a second circuit which comprises additionally oxygen injecting means and is connected to the first circuit by pressure-sensitive means, such as a discharging device (or upstream pressure adjuster), in such a way that a stable pressure is obtained in the first circuit upon the attainment of the maximum flowrate thereof, wherein the first circuit can consists of several supersonic nozzle groups.
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