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US 2026/0201485 A1Published application
Method of producing reduced iron
AssigneeJfe Steel Corporation
InventorsYoshiko NAKAHARA, Kota MORIYA, Koki TERUI, Taihei NOUCHI
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Abstract
Provided is a method of producing reduced iron that can achieve both energy savings and a decrease in CO2 emissions. The system is configured to circulate and reuse top gas with a blowing process, a reduction process, a distribution process, a synthesis process, and a reforming process, and the distribution ratio of the top gas in the distribution process is controlled according to consumed H2/CO, which is a ratio of the amount of H2 consumed to the amount of CO consumed in the reduction process.
Claims20
A method of producing reduced iron, the method comprising:
- a charging process of charging iron oxide into a reduction furnace;
- a blowing process of blowing reducing gas into the reduction furnace;
- a reduction process, in the reduction furnace, of reducing the iron oxide by the reducing gas to obtain reduced iron;
- a distribution process of distributing top gas discharged from the reduction furnace into a first top gas and a second top gas;
- a synthesis process of synthesizing regenerative methane gas from the first top gas and hydrogen gas;
- and
- a reforming process of using the regenerative methane gas and the second top gas as feed gas to obtain the reducing gas from the feed gas, wherein
- a distribution ratio of the top gas in the distribution process is controlled according to consumed H2/CO, a ratio of an amount of H2 consumed to an amount of CO consumed in the reduction process.
5 more elements
Dependencies are inferred from the claim text.