CO<sub>2</sub> Abatement in the Steel Industry through Carbon Recycle and Electrification by Means of Advanced Polymer Membranes
The potential of advanced polymer or hybrid polymer membranes to reduce CO<sub>2</sub> emissions in steel production was evaluated. For this, a conceptual process design and assessment was performed for a process that is a combination of carbon recycling and electrification of the steel...
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| Main Authors: | , , |
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| Format: | article |
| Language: | EN |
| Published: |
MDPI AG
2021
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| Subjects: | |
| Online Access: | https://doaj.org/article/d17e30fe2b5746d38a5b018e9792ce03 |
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| Summary: | The potential of advanced polymer or hybrid polymer membranes to reduce CO<sub>2</sub> emissions in steel production was evaluated. For this, a conceptual process design and assessment was performed for a process that is a combination of carbon recycling and electrification of the steel making process. The results indicate a CO<sub>2</sub> avoidance of 9%. CO<sub>2</sub> emissions were reduced by factor 1.78 when using renewable electricity according to the proposed scheme compared to feeding this renewable electricity to the electrical grid. The CO<sub>2</sub> abatement potential of the studied concept is highly dependent on the CO<sub>2</sub> conversion in the plasma torch. If CO<sub>2</sub> conversion in the plasma torch could be increased from 84.4% to 95.0%, the overall CO<sub>2</sub> avoidance could be further increased to 16.5%, which is comparable to the values reported for the top gas recycling blast furnace. In this case, the CO<sub>2</sub> emissions reduction achieved when using renewable electricity in the proposed scheme compared to using the same electricity in the electrical grid increases a factor from 1.78 to 3.27. |
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