Apparatus for the direct reduction of iron and production of fuel gas using gas from coal
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United States of America Patent
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Nov 18, 1980
Issued Date -
N/A
app pub date -
Sep 24, 1979
filing date -
Sep 24, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for the direct reduction of iron and production of fuel gas in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide rich gas. The mixture is reacted with carbon to upgrade it in reducing potential and is desulfurized by reaction with lime in a first shaft furnace to form a hot reducing gas. The hot reducing gas is utilized as the reductant in a counterflow shaft reduction furnace, a minor portion of the spent reducing gas is recycled as tempering gas for the gas from the hot gasifier, and the major portion of spent reducing gas becomes a source of fuel gas. The apparatus includes a gasifier, counterflow shaft gas reactor, a shaft type direct reduction furnace and associated equipment.
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