Direct reduction with coal gasification and coke oven gas
US11021766B2 · kind B2 · utility
0Cited by
4References
11Claims
0Family size
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Key dates
| Filing date | Nov 3, 2017 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Dec 30, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus for producing direct reduced iron (DRI), including: generating a reducing gas in a coal gasifier using coal, oxygen, steam, and a first coke oven gas (COG) stream as inputs to the coal gasifier; and delivering the reducing gas to a shaft furnace and exposing iron ore agglomerates to the reducing gas to form metallic iron agglomerates. The method further includes delivering a second COG stream directly to the shaft furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.