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Method and device for solar reduction iron making

A solar energy and reduction furnace technology, applied in the direction of improving process efficiency and reducing gas emissions, can solve problems such as the inability to completely eliminate greenhouse gas emissions, save non-renewable energy, avoid greenhouse gas emissions, and be conducive to environmental protection. Effect

Active Publication Date: 2012-04-25
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology is still in the stage of laboratory research and development, and industrial implementation is only a concept, and the reduction reaction still uses coke or methane as the reducing agent, and the reduction process also produces CO 2 , cannot completely eliminate greenhouse gas emissions

Method used

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  • Method and device for solar reduction iron making
  • Method and device for solar reduction iron making
  • Method and device for solar reduction iron making

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The solar energy reduction ironmaking device of the present invention is as figure 1 Shown, including solar and wind hydrogen generation equipment, solar hydrogen heating equipment, solar reduction equipment and gas processing equipment. The solar and wind energy hydrogen generation equipment includes a photovoltaic cell 23 , a wind generator 1 , an electrolytic cell 2 , a water tank 3 and a hydrogen storage tank 4 . The photovoltaic cells are connected to the anode and cathode of the electrolytic cell, and the wind generator circuit is connected to the electrolytic cell through a power conversion device. Use solar photovoltaic cells to generate electricity or wind generators to generate hydrogen by electrolyzing water, and also use photovoltaic cells and wind generators to generate electricity to complement each other. In this embodiment, electricity generated by solar photovoltaic cells 23 is used as power. The electrolytic cell is a cylindrical structure made of met...

Embodiment 2

[0028] Another embodiment of the present invention is as Figure 4 As shown, the solar reduction ironmaking device is also provided with a material preheating chamber 25 and a product cooling chamber 13, the material preheating chamber is connected to the hopper 24, and the product cooling chamber is connected to the discharge equipment. The gas outlet 20 of the solar reduction furnace is connected to the inlet of the circulating fan 14 through the material preheating chamber and the gas processing equipment 15 . The circulation fan outlet is connected to the air inlet of the product cooling chamber, and the hydrogen storage tank 4 is also connected to the air inlet of the product cooling chamber, and the connecting pipeline is provided with a valve, which is connected to the hydrogen inlet pipe 16 of the hydrogen heating chamber through the product cooling chamber. In this embodiment, the reduced product is sponge iron, which enters the electric arc furnace for smelting after...

Embodiment 3

[0031] Another embodiment of the present invention is as Figure 5 As shown, the solar reduction ironmaking device is also provided with a material preheating chamber 25 and an electric arc furnace 27, the material preheating chamber is connected with a hopper 24, and the electric arc furnace is provided with an electrode 26 and a molten iron outlet 28. The gas outlet 20 of the solar reduction furnace is connected to the inlet of the circulation fan 14 through the material preheating chamber and the gas treatment equipment 15, the outlet of the circulation fan and the hydrogen storage tank are connected to the hydrogen inlet pipe 16 of the hydrogen heating chamber, and the hydrogen outlet pipe 18 of the hydrogen heating chamber Connect to the gas inlet 21 of the solar reduction furnace. The material preheating chamber is connected to the feed port of the solar reduction furnace 12 through the material delivery pipeline 6, the discharge port of the solar reduction furnace is co...

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Abstract

The invention discloses a method and a device for solar reduction iron making. The device comprises a solar photovoltaic cell, a wind driven generator, an electrolyzer, a hydrogen heating chamber, a solar reduction furnace and gas treatment equipment. The hydrogen heating chamber and the reduction furnace are provided with a composite optical heating system consisting of a condenser, a heliostat and heat absorbing equipment. In the process of solar reduction iron making, hydrogen prepared by electrolyzing water is used as a reducing agent, the hydrogen is preheated and heat is provided for iron oxide reduction through a photo-thermal principle, the preheated hydrogen is introduced into the solar reduction furnace for reduction reaction so as to generate iron, the iron is smelted into molten iron, and the rest hydrogen is purified, and fed into a system for recycle through a circulating fan. Through the solar reduction iron making, non-renewable energy resources are saved, and the emission of greenhouse gases such as CO2 and the like is avoided. The electrolyzed hydrogen does not contain any harmful impurities, the temperature required by reduction in the reduction iron making process taking the hydrogen as the reducing agent is low, the reaction time is short, carbon dioxide is not generated, and the reduced iron has good quality.

Description

technical field [0001] The invention belongs to the technical field of new energy utilization and metallurgy, and in particular relates to a method and device for smelting reduction ironmaking by utilizing solar energy. Background technique [0002] Reduction ironmaking is an important part of iron and steel production. Its main feature is to use non-coking coal as a primary energy source and reducing agent to reduce iron oxides in a molten state. It has the advantages of using coal instead of coke, short process, and less environmental pollution. , low construction investment, low production cost and other advantages, it is widely optimistic about the field in the industry, and iron and steel enterprises in various countries are competing to carry out research and development. The existing reducing ironmaking methods mainly include COREX method (CN1010323B), DIOS method (CN1035136A), and HISELT method (CN1037542A). Among them, the COREX method has been produced industriall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/00C21B11/00
CPCY02P10/134Y02P10/20
Inventor 贾会平
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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