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Method for controlling carbon emission in metallurgical industry

A carbon emission and industry technology, applied in the direction of silicon dioxide, silicon oxide, etc., can solve the problem of difficulty in generating high added value, achieve the effect of astonishing cost and solve CO2 emissions

Pending Publication Date: 2021-11-05
江苏绿之蓝新材料科技有限公司
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Problems solved by technology

Of course CO 2 After purification, chemical products such as carbon ammonia and sodium potassium salt can also be produced, but it is difficult to produce high value-added process products in this process

Method used

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  • Method for controlling carbon emission in metallurgical industry

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Embodiment Construction

[0022] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0023] A method of controlling carbon emissions in the metallurgical industry, converting CO 2 Immersed in an alkaline solution and undergoes an acidic neutralization reaction with soluble alkaline substances to produce a high value-added acidic precipitate; the neutralization reaction condition is that the acidic precipitate produced by the reaction is less than CO 2 dissolved in the reaction solution to produce H 2 CO 3 acidic.

[0024] The soluble alkaline substance is Na 2 SiO 3 The solution is sodium metasilicate, also known as water glass; its reaction equation is:

[0025] CO 2 +Na 2 SiO 3 +H 2 O→Na 2 CO 3 +H 2 SO 3 ↓

[0026] H 2 SiO 3 SiO can be obtained by heating above 160°C 2 White carbon black is a high value-added end product; the reaction formula is H 2 SiO 3 → SiO 2 +H 2 O; SiO 2 The downstream market of whi...

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Abstract

The invention relates to a method for controlling carbon emission in the metallurgical industry, and belongs to the technical field of metallurgical environmental protection. According to the technical scheme, the method comprises the following steps: immersing CO2 into an alkaline solution, and carrying out an acid neutralization reaction with a soluble alkaline substance so as to generate a high-added-value acidic precipitate; the neutralization reaction condition is that the acidity of H2CO3 generated when CO2 is dissolved in the reaction liquid is smaller than that of acidic precipitates generated by the reaction. The method has the beneficial effects that CO2 is turned into wealth from waste, the high-added-value product SiO2 white carbon black can be produced while emission of CO2 is eliminated, and particularly, a large amount of heat energy produced by solid waste melting and solid-phase reduction of metallurgical enterprises and released CO2 gas are utilized for producing SiO2 white carbon black, so that the problem of CO2 emission of the metallurgical enterprises is solved, and high value-added by-products can be produced, and the method is green, environment-friendly, efficient and energy-saving, and has complementary advantages.

Description

technical field [0001] The invention relates to a method for controlling carbon emission in the metallurgical industry, belonging to the technical field of metallurgy and environmental protection. Background technique [0002] With the gradual deepening and strictness of the national industrial policy, energy conservation and emission reduction, green environmental protection, economic recycling and technological innovation are popular in all walks of life, leading to the rapid development of the national economy in a healthier and higher quality direction. The metallurgical industry, especially ferrous metal smelting, has carbon emissions (CO 2 emission) exceeds the standard; the reduction of iron oxides is inseparable from carbonaceous elements, and there will be a large amount of CO in high-temperature smelting and reduction with carbon 2 Gas production, ie carbon emissions. Blast furnace smelting and LD furnace (converter oxygen furnace) electric furnace smelting relea...

Claims

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Application Information

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IPC IPC(8): C01B33/12
CPCC01B33/12
Inventor 王太进肖明顾黎娜
Owner 江苏绿之蓝新材料科技有限公司
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