METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON UTILIZING A CATALYTICAL PRETREATMENT OF HYDROCARBONS AS A SOURCE OF REDUCING GAS

A method and apparatus for producing direct reduced iron using a pre-treated make-up gas as a reducing agent in a direct reduced iron reactor are provided. The method involves pre-treating a stream of make-up gas containing heavy hydrocarbons by subjecting the stream to low temperature adiabatic ref...

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Hauptverfasser: CONDOSTA, Michele, PRIMAVERA, Alessandra, DALLE NOGARE, Daniela, MARTINIS, Alessandro, ZENDEJAS MARTINEZ, Eugenio
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A method and apparatus for producing direct reduced iron using a pre-treated make-up gas as a reducing agent in a direct reduced iron reactor are provided. The method involves pre-treating a stream of make-up gas containing heavy hydrocarbons by subjecting the stream to low temperature adiabatic reforming at a temperature between 300° C. and 600° C., prior to using the stream of make-up gas as a reducing agent for producing direct reduced iron. The method also involves adjusting the humidity content of the stream of make-up gas after the low temperature adiabatic reforming by bypassing the stream to selectively split it into a first part of the stream of make-up gas and a second part of the stream of make-up gas, subjecting the first part to water separation, and then mixing the first part with the second part to obtain a reducing stream to be sent to direct reduced iron production.