PREHEATING OXYGEN FOR INJECTION INTO BLAST FURNACES
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United States of America Patent
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Issued Date -
Jun 12, 2014
app pub date -
Dec 31, 2012
filing date -
Dec 10, 2012
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Abandoned
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Abstract
A side stream of hot blast air is used to preheat oxygen at a heat exchanger. The resultant hot oxygen is injected into a tuyere of a blast furnace with pulverized or granular coal. The cooled side stream may be recombined with the hot blast air for injection into the tuyere, fed to the stove as part of the cold blast air, or fed to stove for combustion with blast furnace gas.
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