Loading patent…
AssigneeKorf Engineering GmbH
InventorsLudwig von Bogdandy, Werner Kepplinger, Kurt Stift, Gero Papst, Rolf Hauk
Estimating the term…
To gain electric energy in addition to producing molten pig iron, from lumpy iron ore and solid fuels, by using a direct reduction zone for the reduction of the iron ore to sponge iron and a meltdown-gasifying zone for the production of molten pig iron, carbon carriers are used in, and oxygen-containing gases are supplied to, the meltdown-gasifying zone. The reduction gas forming is fed into the direct reduction zone. The reduction gas reacted there is supplied as top gas to a power generation plant including a turbine. In order to adapt the power generation to the power consumption by simultaneously avoiding any influence on the metallurgical conditions at the production of pig iron and its further processing, the charge of carbon carriers into the meltdown-gasifying zone is varied as a function of the gas consumption of the power generation plant in a manner that, with a higher gas consumption, the volatile constituents of the charge are increased and the C.sub.fix charge is reduced and, with a lower gas consumption, it is proceeded the other way round, while keeping the amount and composition of the pig iron produced substantially constant.
In a process for gaining electric energy in addition to producing molten pig iron from lumpy iron ore and solid fuels by using a direct reduction zone operating under overpressure to reduce the iron ore to sponge iron and a meltdown-gasifying zone to produce molten pig iron, said sponge iron being fed to said meltdown-gasifying zone as produced, introducing a charge of carbon carriers including volatile constituents and a C.sub.fix portion into said meltdown-gasifying zone and supplying oxygen-containing gases thereto to form reduction gas, injecting said reduction gas into said direct reduction zone to obtain reacted reduction gas, withdrawing said reacted reduction gas as a top gas, and feeding said reacted reduction gas as said top gas to a power generation plant including at least one turbine, the improvement comprising
In an arrangement or obtaining electric energy in addition to producing molten pig iron, from lumpy iron ore and solid fuels, which arrangement comprises a direct reduction shaft furnace including a first supply means for lumpy iron ore, a second supply means for reduction gas, a first discharge means for the reduction product formed in said direct reduction shaft furnace and a second discharge means for top gas,
Dependencies are inferred from the claim text.