Apparatus for injecting gas into a vessel
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United States of America Patent
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Issued Date -
Jun 5, 2008
app pub date -
Dec 5, 2006
filing date -
Dec 5, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lance for injecting gas into a furnace vessel. The lance imparts a spiral or swirling flow to gas discharged by the lance. The lance includes a plurality of internally water-cooled flow vanes in fluid communication with a fluid-cooled structure that is discrete from the fluid-cooled outer wall of the lance. The result is a lance that effectively discharges gas with a desired swirling motion, that is comparatively simple in design and construction, and whose flow vanes are capable of withstanding the extreme thermal stresses encountered in a metallurgical or other high temperature furnace vessel.
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