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Method and equipment for low-carbon manufacturing of iron by using hydrogen and oxygen mixed gas

Pending Publication Date: 2022-05-31
E & E CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, coke production requires a separate coking plant, which leads to an increase in the cost of the entire iron manufacturing process

Method used

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  • Method and equipment for low-carbon manufacturing of iron by using hydrogen and oxygen mixed gas

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Embodiment Construction

[0036] As a heat source with very few harmful substances, gas mixed with hydrogen and oxygen has attracted attention. The present application provides a method of using a hydrogen / oxygen gas mixture as a heat source to provide the temperature required for iron production.

[0037] The hydrogen / oxygen mixed gas is a gas in which gaseous hydrogen and gaseous oxygen are mixed, and is also called Brown's gas, water gas, or the like. Brown gas can be easily produced by electrolyzing water, so Brown gas can be directly produced and used at a construction site using an electrolysis device. Therefore, unlike hydrogen, no high-pressure storage tanks are required, which significantly reduces the burden and cost of storage or transportation. In addition, Brown gas can raise the temperature of the object to be heated from room temperature to over 1800°C within 2 to 3 seconds, therefore, compared with fossil fuels (LNG, LPG, diesel, etc.), a very high combustion temperature.

[0038] Du...

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Abstract

The invention discloses a method for manufacturing iron by using Brown gas and an apparatus for manufacturing iron by using Brown gas. Pig iron is produced by introducing fine iron ore and a carbon source into a kiln and supplying a flame generated by burning Brown gas into the kiln. Iron is produced by introducing pig iron into a melting furnace and supplying a flame generated by burning Brown gas into the melting furnace. Since flames generated by burning Brown gas are used in a process for manufacturing iron, a high-temperature heat source can be supplied without using coke. Furthermore, since the generation of harmful substances is significantly reduced in the process of manufacturing iron, iron can be manufactured in an environmentally friendly manner.

Description

technical field [0001] The present application relates to a method and apparatus for the low carbon manufacture of iron using Brown gas mixed with hydrogen and oxygen. Background technique [0002] A method using a blast furnace is generally used to manufacture iron in a steel mill, and it is performed by the following process. [0003] First, the first step is to produce coke using coal (bituminous coal), and to produce pelletized or massive sintered ore by sintering fine iron ore. [0004] The second step is to obtain pig iron by mixing fine iron ore and coke, then burning and heating the mixture. This process can be represented by the following chemical reaction. (The reaction formula of the following reaction is not a chemical formula in the strict sense, but represents the substance before and after the reaction. Therefore, the number of molecules or elements is not described. If the number of molecules or elements is described, it can become a complete chemical formu...

Claims

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Application Information

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IPC IPC(8): C21B5/00C21B11/00F01K27/00
CPCC21B5/00C21B11/00F01K27/00Y02P10/122
Inventor 玄长洙丁良淑
Owner E & E CO LTD
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