Apparatus for the direct reduction of iron and production of fuel gas using gas from coal

摘要

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.