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by Hypx
2001 days ago
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The amount of hydrogen you need for hydrogen DRI is quite small. From this source: https://www.energy.gov/sites/prod/files/2018/08/f54/fcto-h2-... You need about 54kg of hydrogen per ton of iron. Assuming it takes 50 kWh of energy to make 1 kg of hydrogen, you get something like 2.7 kWh per kg of iron. This is significantly more energy efficient than the idea you're proposing. |
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918249/
The Norwegian pilot plant used a crude asbestos separator for the anode and cathode. The above used some magic polymer.
They got it down to 3.53 kwh/kg