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Carbon neutralization method for smelting steel and iron by using iron ore, hydrogen and oxygen

A carbon-neutral and hydrogen-based technology, applied in the field of steelmaking, can solve problems such as location and condition restrictions, cumbersome preparation work, and reduced steelmaking efficiency

Pending Publication Date: 2021-09-07
JIANGYIN SHANGFENG NEW ENERGY TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Invention patent CN104662167A discloses a method of using renewable energy for the production of steel, in which iron ore is reduced with hydrogen, which is produced by electrolysis of water, and the electricity required for electrolysis comes from hydropower or wind or photovoltaic sources or other Renewable energy is renewable energy. The technical effect of this invention is that it can sustainably use renewable energy for steel production and reduce carbon emissions. However, this invention needs to rely on external hydropower or wind power to generate hydrogen. Therefore, the location and conditions of steelmaking are greatly restricted, and the preparatory work in the early stage is relatively cumbersome, which indirectly reduces the efficiency of steelmaking

Method used

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  • Carbon neutralization method for smelting steel and iron by using iron ore, hydrogen and oxygen
  • Carbon neutralization method for smelting steel and iron by using iron ore, hydrogen and oxygen

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Embodiment 1

[0019] In this embodiment, a smelting gasifier 1, a flue gas separator 2, an oxygen generator 5, a heating furnace 3 and a converter 4 are included, wherein the smelting gasifier 1 communicates with the flue gas separator 2 through a gas pipeline , the flue gas separator 2 communicates with the heating furnace 3 and the converter 4 through a gas pipeline, and the oxygen generator 5 communicates with the heating furnace 3 and the converter 4 through a gas pipeline; the specific implementation steps are as follows : add combustible energy in the smelting gasifier 1, gasify to generate a mixed gas containing hydrogen and carbon dioxide, pass the mixed gas into the flue gas separator 2 for gas separation, pass the separated hydrogen through into the heating furnace 3; when hydrogen is passed into the heating furnace 3, iron ore, biological particles and oxygen produced by the oxygen generator 5 are added into the heating furnace 3, wherein the biological Particulate matter is comb...

Embodiment 2

[0021] In this embodiment, a smelting gasifier 1, an oxygen generator 5, a flue gas separator 2, a heating furnace 3 and an electric arc furnace 4 are included, and the smelting gasifier 1 communicates with the flue gas separator 2 through a gas pipeline , the flue gas separator 2 communicates with the heating furnace 3 and the electric arc furnace 4 through a gas pipeline, and the oxygen generator 5 communicates with the heating furnace 3 and the electric arc furnace 4 through a gas pipeline; specific implementation The steps are: add combustible energy into the smelting gasifier 1 for gasification to generate a mixed gas containing hydrogen, pass the mixed gas into the flue gas separator 2 to separate the hydrogen, and remove the rest of the gas through the flue gas separator ; The hydrogen is passed into the heating furnace 3, meanwhile, iron ore, biological particles and the oxygen produced by the oxygen making device 5 are also added in the heating furnace 3, wherein the e...

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Abstract

The invention relates to the field of steelmaking, in particular to a carbon neutralization method for smelting steel by using iron ore, hydrogen and oxygen. The carbon neutralization method for smelting the steel by using the iron ore, the hydrogen and the oxygen comprises the steps of adding combustible energy into a smelting gasification device to be gasified into mixed gas containing the hydrogen, and extracting the hydrogen; the iron ore, the hydrogen, the oxygen and biological particles are added into a heating furnace to react to generate sponge iron; and adding the sponge iron and other steelmaking materials into a steelmaking furnace for steelmaking, and using gasification of the hydrogen and the oxygen to achieve carbon neutralization. The steelmaking method is low in cost and energy consumption, the steelmaking time is saved, the carbon emission in the steelmaking process is reduced, and the problem of air pollution in the steelmaking process is solved.

Description

technical field [0001] The invention relates to the field of steelmaking, in particular to a carbon-neutralized method for making steel with iron ore, hydrogen and oxygen. Background technique [0002] The method of using iron ore to make metal steel in the traditional long process technology is to use iron ore as raw material, sinter in sintering furnace to make fast sintering, after cooling, and then process it into blast furnace to enter the furnace. The method of adding cold material into the blast furnace is a layer of coke and a layer of sintered block material, and hot air, coal powder, blowing and smelting are used to make molten metal, that is, molten iron. Decarburization, smelting to make steel as required for steelmaking, and then pass through a refining furnace to make finished steel. in: [0003] Sintering energy consumption: The fuel used for sintering is standard coal and coal powder, and the amount of standard coal and coal powder per ton of molten iron is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/00C21C5/28C21C5/52
CPCC21B13/0066C21C5/28C21C5/52Y02P10/20
Inventor 徐建明
Owner JIANGYIN SHANGFENG NEW ENERGY TECH DEV
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