BLEED-OFF GAS RECOVERY IN A DIRECT REDUCTION PROCESS
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United States of America Patent
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N/A
Issued Date -
Mar 14, 2024
app pub date -
Feb 1, 2022
filing date -
Feb 3, 2021
priority date (Note) -
Published
status (Latency Note)
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Abstract
The disclosure relates to a process for the production of sponge iron from iron ore that includes the steps: charging iron ore into a direct reduction shaft; introducing a hydrogen-rich reducing gas into the direct reduction shaft in order to reduce the iron ore and produce sponge iron; removing a top gas from the direct reduction shaft; dividing the top gas into a recycle stream and a bleed-off stream; processing the bleed-off stream through a separation unit to provide a hydrogen-enriched off-stream and an inert-enriched off-stream; and introducing the recycle stream and the hydrogen-enriched off-stream as constituent parts of the hydrogen-rich reducing gas to the direct reduction shaft. The disclosure further relates to a system for the production of sponge iron.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| SE | C2 | SE547126 | Feb 03, 2021 |
| CN | A | CN116867912 | Feb 01, 2022 |
| AU | A1 | AU2022217704 | Feb 01, 2022 |
| CA | A1 | CA3205171 | Feb 01, 2022 |
| MX | A | MX2023009089 | Feb 01, 2022 |
| KR | A | KR20230138002 | Feb 01, 2022 |
| JP | A | JP2024508605 | Feb 01, 2022 |
| WO | A1 | WO2022169392 | Feb 01, 2022 |
| EP | B1 | EP4288571 | Feb 01, 2022 |
International Classification(s)
- 2022 Application Filing Year
- C01B Class
- 1733 Applications Filed
- 386 Patents Issued To-Date
- 22.28 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
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- C01B Class
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- 1 Age