On the application of gasification to reduced iron
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Developing the direct reduction process for iron ore is indeed of great significance for addressing iron smelting issues in areas without coking coal or in those where coke prices are high. For large-scale iron production, a significant amount of reducing gas (CO+H2) is indeed required, and the operating pressure is around 1.0 MPa, which is not high ； In such a case, there is the issue of using the high-pressure reduction gas resulting from popular high-pressure gasification at lower pressures. I would like to ask if anyone has worked on this aspect, that is, comparing low-pressure gasification with high-pressure gasification for selection purposes And what about the issue of how to utilize energy when high-pressure gas is depressurized?
Select a suitable gasification process technology.
How can the expansion work of high-pressure gas be better utilized when it is used as low-pressure gas?
For the gas generated by the direct reduction of iron ore, 0.01 MPa is sufficient; 1.0 MPa is not necessary.
Just like in the air separation unit, the previous expander generates electricity.
Just like in the air separation unit, the previous expander generates electricity.