Method for the direct reduction of iron ore
US-2022389528-A1 · Dec 8, 2022 · US
Operating method of a network of plants
US2024263259A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024263259-A1 |
| Application number | US-202118559901-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 26, 2021 |
| Priority date | May 26, 2021 |
| Publication date | Aug 8, 2024 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A method of operating a network of plants comprising a blast furnace, a direct reduction furnace, a CO2 conversion unit wherein blast furnace top gas is subjected to a CO2 conversion step to produce a liquid carbon product which is injected into the direct reduction furnace.
First claim
Opening claim text (preview).
What is claimed is: 1 - 12 . (canceled) 13 . A method of operating a network of plants comprising: producing hot metal and a blast furnace top gas in a blast furnace; charging oxidized iron to a direct reduction furnace to be reduced by a reducing gas to produce direct reduced iron, the direct reduction furnace comprising a reduction zone, a transition zone and a cooling zone; subjecting the blast furnace top gas to a CO2 conversion step in a CO2 conversion unit to produce a liquid carbon product; and injecting the liquid carbon product into the direct reduction furnace. 14 . The method as recited in claim 13 wherein the liquid carbon product is injected at least into the transition zone of the direct reduction furnace. 15 . The method as recited in claim 13 wherein the liquid carbon product is injected at least into the cooling zone of the direct reduction furnace. 16 . The method as recited in claim 13 wherein the liquid carbon product is injected in the transition zone and in the cooling zone of the direct reduction furnace. 17 . The method as recited in claim 13 wherein the liquid carbon product is a biofuel. 18 . The method as recited in claim 13 wherein the liquid carbon product is liquid alcohol. 19 . The method as recited in claim 13 wherein the liquid carbon product is liquid hydrocarbon. 20 . The method as recited in claim 13 wherein the reducing gas comprises more than 50% in volume of hydrogen. 21 . The method as recited in claim 13 wherein the reducing gas comprises more than 99% in volume of hydrogen. 22 . The method as recited in claim 13 wherein the network of plants further comprises a coke oven producing coke and a coke oven gas, the coke oven gas being mixed with blast furnace gas to be turned into the liquid carbon product. 23 . The method as recited in claim 13 further comprising producing liquid steel and a steelmaking gas in a steelmaking plant, the steelmaking gas being mixed with blast furnace gas to be turned into the liquid carbon product. 24 . The method as recited in claim 13 wherein the CO2 conversion step comprises a biological transformation step.
Assignees
Inventors
Classifications
- C21B13/0073Primary
Selection or treatment of the reducing gases · CPC title
by adding additional fuel in recirculation pipes · CPC title
Interaction of exhaust gases produced during the manufacture of iron or steel with other processes · CPC title
by reforming · CPC title
of carbon dioxide · CPC title
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Frequently asked questions
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- What does patent US2024263259A1 cover?
- A method of operating a network of plants comprising a blast furnace, a direct reduction furnace, a CO2 conversion unit wherein blast furnace top gas is subjected to a CO2 conversion step to produce a liquid carbon product which is injected into the direct reduction furnace.
- Who is the assignee on this patent?
- Arcelormittal
- What technology area does this patent fall under?
- Primary CPC classification C21B13/0073. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Aug 08 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).