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A liquid combustion-supporting sulfur-fixed coal additive and its application method

A coal-fired additive and additive technology, applied in fuel, solid fuel, petroleum industry, etc., can solve the problems of low sulfur fixation efficiency, insignificant desulfurization effect, insignificant combustion-supporting effect of coal-fired additives, etc., and achieve good combustion-supporting effect

Active Publication Date: 2015-10-28
唐山干诚工程管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sulfur-fixing additive used in the prior art, the sulfate generated after the reaction will decompose after the coal-fired combustion equipment reaches a certain temperature, which greatly reduces the sulfur-fixing efficiency, so the desulfurization effect is not significant
[0004] The combustion-supporting components in coal-fired additives generally contain chlorine and carbon elements, which are easy to generate HCl and CO under high temperature. 2 and other gases, HCl gas will cause corrosion to combustion equipment, and the CO produced 2 The gas will increase the CO of the whole combustion system 2 emissions, causing additional environmental pollution, and the combustion-supporting effect of existing coal-fired additives is not significant

Method used

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  • A liquid combustion-supporting sulfur-fixed coal additive and its application method
  • A liquid combustion-supporting sulfur-fixed coal additive and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The components of the combustion-supporting sulfur-fixing coal-burning additive and the weight percent of each component are (total weight is 1000g):

[0027] components

KMnO 4

Cu(NO 3 ) 2

Fe(NO 3 ) 3

Ca(NO 3 ) 2

Al(NO 3 ) 3

KNO 3

NaVO 3

h 2 o

weight

30

55

50

180

35

150

15

485

weight percentage (%)

3

5.5

5

18

3.5

15

1.5

48.5

[0028] The steps of using the combustion-supporting sulfur-fixing coal-burning additive are as follows:

[0029] a. Mix the combustion-supporting, sulfur-fixing and coal-burning additives in the above ratio, stir, and heat to 60°C;

[0030] b. After cooling, the combustion-supporting solid-sulfur coal-burning additive mixture is injected into the furnace by compressed air, and the pressure of the compressed air is 0.5MPa.

[0031] The amount of combustion-supporting ...

Embodiment 2

[0035] The components of the combustion-supporting sulfur-fixing coal-burning additive and the weight percent of each component are (total weight is 1000g):

[0036] components

KMnO 4

Cu(NO 3 ) 2

Fe(NO 3 ) 3

Ca(NO 3 ) 2

Al(NO 3 ) 3

KNO 3

NaVO 3

h 2 o

weight

50

80

20

140

40

80

25

565

weight percentage (%)

5

8

2

14

4

8

2.5

56.5

[0037] The steps of using the combustion-supporting sulfur-fixing coal-burning additive are as follows:

[0038] a. Mix the combustion-supporting, sulfur-fixing and coal-burning additives in the above ratio, stir, and heat to 40°C;

[0039] b. After cooling, the combustion-supporting solid-sulfur coal-burning additive mixture is injected into the furnace by compressed air, and the pressure of the compressed air is 0.6MPa.

[0040] The combustion-supporting sulfur-fixing coal...

Embodiment 3

[0044] The components of the combustion-supporting sulfur-fixing coal-burning additive and the weight percent of each component are (total weight is 1000g):

[0045] components

KMnO 4

Cu(NO 3 ) 2

Fe(NO 3 ) 3

Ca(NO 3 ) 2

Al(NO 3 ) 3

KNO 3

NaVO 3

h 2 o

weight

60

50

40

120

50

180

5

495

weight percentage (%)

6

5

4

12

5

18

0.5

49.5

[0046] The steps of using the combustion-supporting sulfur-fixing coal-burning additive are as follows:

[0047] a. Mix the combustion-supporting, sulfur-fixing and coal-burning additives in the above ratio, stir, and heat to 50°C;

[0048] b. After cooling, the combustion-supporting solid-sulfur coal-burning additive mixture is injected into the furnace by compressed air, and the pressure of the compressed air is 0.3MPa.

[0049] Preferably, the injection mode of the com...

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Abstract

The invention discloses a liquid combustion-supporting sulfur-fixing coal additive and a using method of the additive; the liquid combustion-supporting sulfur-fixing coal additive comprises the following components in percentage by weight: 3-7.5% of KMnO4, 3-8% of Cu(NO3)2, 2-7.5% of Fe(NO3)3, 8-18% of Ca(NO3)2, 3.5-6% of Al(NO3)3, 8-18% of KNO3, 0.5-2.5% of NaVO3, and the balance of H2O. The liquid combustion-supporting sulfur-fixing coal additive provided by the invention uses water as a solvent and each component is at an ionic state, has relatively high reaction activity at a high temperature and has high combustion efficiency and an excellent sulfur fixing effect, and the sulfur fixing efficiency is more than 40%.

Description

technical field [0001] The invention relates to the technical field of coal combustion, in particular to a liquid combustion-supporting sulfur-fixed coal combustion additive and a use method thereof. Background technique [0002] Coal-burning additive is a chemical agent added to coal. It is composed of one or more substances, generally solid powder or liquid. Among them, the role of combustion-supporting additives is mainly to promote the complete combustion of coal and increase the burnout rate of coal. , the role of sulfur-fixing additives is mainly to reduce SO in the process of coal combustion 2 Generate concentration. [0003] For coal-burning additives, the prior art contains components such as alkaline earth metal oxides, which are mixed with SO generated by coal combustion. 3 It acts to generate sulfate and play the role of sulfur fixation. In the sulfur-fixing additives used in the prior art, the sulfate generated after the reaction will decompose after the coal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
Inventor 彭飞李启云
Owner 唐山干诚工程管理有限公司
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