COLD WIND GENERATION FROM SLAG HEAT
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Dec 14, 2012
filing date -
Dec 16, 2011
priority date (Note) -
Abandoned
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Abstract
The present invention describes a method for generating cold-air blast from slag heat, wherein the method comprises the following steps: a. providing hot, granulated slag, b. providing wet blast furnace gas, c. preheating the wet blast furnace gas, whereby preheated blast furnace gas is obtained, d. transferring heat from the hot, granulated slag to the preheated blast furnace gas, wherein hot blast furnace gas is obtained, e. expanding the hot blast furnace gas in a turbine, wherein energy is released and expanded blast furnace gas is obtained, f. using the released energy to drive a cold-air blast compressor for compressing the cold-air blast, wherein a shaft is driven by expansion of the hot blast furnace gas in a turbine, wherein said shaft drives the cold-air blast compressor and wherein the expanded blast furnace gas is used for preheating the wet blast furnace gas, whereby cold, expanded blast furnace gas is obtained.
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