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Liquid combustion-supporting sulfur-fixing coal additive and using method thereof

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

Active Publication Date: 2013-04-24
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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  • Liquid combustion-supporting sulfur-fixing coal additive and using method thereof
  • Liquid combustion-supporting sulfur-fixing coal additive and using method thereof

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

QUR 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 s...

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

QUR 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 comb...

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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 Applications(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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