Importance

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Abstract

A method for operating a blast furnace for producing of pig iron, includes the following steps

heating a first stream of steam in a first heater, before or after having been mixed with an oxygen source selected from oxygen and oxygen-enriched air, to provide a first heated stream of oxygen-enriched steam;heating a first stream of blast furnace gas from the blast furnace and a first stream of natural gas in a second heater, before or after being mixed together, to provide a heated carbon feed stream;feeding the first heated stream of oxygen-enriched steam and the heated carbon feed stream either as a combined stream or separately to a catalytic partial oxidation reactor to produce a stream of syngas; andfeeding the stream of syngas to the shaft of the blast furnace.

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First Claim