Process and installation for producing substitute gas

Details Process and installation for producing substitute gas Process and installation for producing substitute gas

C - Chemistry, Metallurgy

21

B

C21B 5/06 (2006.01) C21B 13/00 (2006.01)

Patent

CA 2752953

Disclosed are a method and a plant for reducing particulate iron oxide- containing material, in which the iron oxide-containing material is at least partially reduced in a reduction zone using reduction gas, and the waste gas produced during the reduction process is withdrawn and then subjected to a CO2 purification process in a CO2 separation device (1), a CO2-containing tail gas being separated in said process. The tail gas is combusted and then dehydrated in a dehydrator (5), wherein the obtained substitute gas is used to replace inert gas.

L'invention concerne un procédé et une installation de réduction de matière particulaire contenant de l'oxyde de fer, la matière contenant de l'oxyde de fer étant au moins partiellement réduite dans une zone de réduction avec un gaz de réduction et les fumées produites lors de la réduction étant aspirées puis soumises à une purification du CO2 dans un dispositif de séparation du CO2 (1), dans lequel un gaz résiduaire contenant du CO2 est séparé. Le gaz résiduaire est soumis à une combustion puis à une déshydratation dans un dispositif de déshydratation (5), le gaz de substitution ainsi formé étant utilisé comme substitut de gaz inerte.

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