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Combustion-supporting, sulfur-fixing, denitrification and coke-removing integrated coal-fired additive and its preparation method and application

A coal-fired additive and denitration technology, which is applied in the fuel, solid fuel, petroleum industry and other directions, can solve the problems of high cost, complicated control process, poor treatment effect, etc., and achieve the effect of less environmental pollution, less corrosion, and less corrosion.

Active Publication Date: 2016-05-25
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process, different additives are often added at different stages, or the gas is purified after the gas is discharged. The control process is complicated, and the treatment effect is poor and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The composition of coal-fired additives and the weight percentage of each composition are shown in the following table respectively:

[0064] MnO 2

Fe 2 o 3

CaO

CuO

KNO 3

KMnO 4

Al 2 o 3

SiO 2

Cu(NO 3 ) 2

Al(NO 3 ) 3

TiO 2

15

15

8

2

10

9

12

5

11

12

1

[0065] The production method is as follows:

[0066] a. Put the above components into an oven and dry for 2 hours at a drying temperature of 55-60°C;

[0067] b. Weigh MnO according to the above ratio 2 , Fe 2 o 3 , CaO, CuO, Al 2 o 3 , SiO 2 , mixed and added to a ball mill for grinding for 3 hours to d 90 <75μm, pour into a closed stirring container;

[0068] d. Weigh KNO according to the above ratio 3 , KMnO 4 , Cu(NO 3 ) 2 , Al(NO 3 ) 3 、TiO 2 , into a closed stirred vessel with MnO 2 , Fe 2 o 3 , CaO, CuO, Al 2 o 3 , SiO 2 Stir together for 2 hours until well combined. ...

Embodiment 2

[0071] The composition of coal-fired additives and the weight percentage of each composition are shown in the following table respectively:

[0072] MnO 2

Fe 2 o 3

CaO

CuO

KNO 3

KMnO 4

al 2 o 3

SiO 2

Cu(NO 3 ) 2

Al(NO 3 ) 3

TiO 2

21

20

10

3

6

7

8

7

10

6

2

[0073] The production method is as follows:

[0074] a. Put the above components into an oven and dry for 2.5 hours at a drying temperature of 40-45°C;

[0075] b. Weigh MnO according to the above ratio 2 , Fe 2 o 3 , CaO, CuO, Al 2 o 3 , SiO 2 , mixed and added to a ball mill for grinding for 3 hours to d 90 <75μm, pour into a closed stirring container;

[0076] d. Weigh KNO according to the above ratio 3 , KMnO 4 , Cu(NO 3 ) 2 , Al(NO 3 ) 3 、TiO 2 , into a closed stirred vessel with MnO 2 , Fe 2 o 3 , CaO, CuO, Al 2 o 3 , SiO 2 Stir together for 1 hour until well combined. ...

Embodiment 3

[0079] The composition of coal-fired additives and the weight percentage of each composition are shown in the following table respectively:

[0080] MnO 2

Fe 2 o 3

CaO

CuO

KNO 3

KMnO 4

Al 2 o 3

SiO 2

Cu(NO 3 ) 2

Al(NO 3 ) 3

TiO 2

13

10

21

4

18

6

3

6

9

8

2

[0081] The production method is as follows:

[0082] a. Put the above components into an oven and dry for 3 hours at a drying temperature of 45-50°C;

[0083] b. Weigh MnO according to the above ratio 2 , Fe 2 o 3 , CaO, CuO, Al 2 o 3 , SiO 2 , after mixing, add ball mill to grind for 2 hours to d 90 <75μm, pour into a closed stirring container;

[0084] d. Weigh KNO according to the above ratio 3 , KMnO 4 , Cu(NO 3 ) 2 , Al(NO 3 ) 3 、TiO 2 , into a closed stirred vessel with MnO 2 , Fe 2 o 3 , CaO, CuO, Al 2 o 3 , SiO 2 Stir together for 0.5 hour until well mixed.

[0085] T...

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Abstract

The invention discloses an integration fire coal additive of combustion supporting, sulfur fixation, denitration and decoking, a preparation method of the integration fire coal additive of the combustion supporting, the sulfur fixation, the denitration and the decoking and application of the integration fire coal additive of the combustion supporting, the sulfur fixation, the denitration and the decoking. The components of the fire coal additive and the weight percentage of the components are respectively 13-27% of MnO2, 8-22% of Fe2O3, 8-22% of CaO, 2-9% of CuO, 6-18% of KNO3, 2-12% of KMnO4, 3-14% of A12O3, 2-7% of SiO2, 2-11% of Cu(NO3)2, 4-12% of A1(NO3)3 and 0.5-4% of TiO2. The integration fire coal additive of the combustion supporting, the sulfur fixation, the denitration and the decoking simultaneously has a combustion supporting function, a sulfur fixation function, a denitration function and a decoking function.

Description

technical field [0001] The invention relates to the technical field of coal combustion, in particular to a combustion-supporting, sulfur-fixing, denitrification and coking-removing integrated coal-burning additive and its preparation method and application. Background technique [0002] Coal combustion additive is a chemical agent added to coal, which is composed of one or more substances, generally solid powder or liquid, which can promote the complete combustion of coal, increase the burnout rate of coal, and reduce SO 2 and NO x Emission concentration and the role of cleaning and inhibiting coking. [0003] At present, some coal-fired additives have the functions of combustion-supporting and sulfur-fixing at the same time, but for reducing the production of NO in the process of coal combustion X There is no additive that can simultaneously satisfy the functions of gas concentration, removal or inhibition of ash deposits and coking generated during coal combustion. In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
Inventor 不公告发明人
Owner SNTO TECH GRP
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