Method for operating a top gas recycling blast furnace installation
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United States of America Patent
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Sep 11, 2018
Grant Date -
Jan 5, 2017
app pub date -
Nov 27, 2014
filing date -
Dec 20, 2013
priority date (Note) -
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Abstract
Method of operating a blast furnace installation comprising a top gas recycle blast furnace and hot stones, whereby a hydrocarbon containing fuel is transformed into a transformed gas stream consisting mainly of CO and H2 and substantially devoid of hydrocarbon, whereby a low-heating-value gaseous fuel is generated comprising a mixture of the transformed gas with a portion of the CO2-rich tail gas obtained by decarbonatation of the blast furnace gas, and whereby the low-heating-value fuel is used to heat the hot furnace gas is heated before being injected into the blast-furnace.
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