Fuel coal additive and preparation method thereof

A coal-fired additive, glycerin technology, applied in the field of coal-fired additives, can solve the problems of low efficiency and high cost, and achieve the effects of fast heating, reduced use cost and obvious effect

Inactive Publication Date: 2015-07-22
李克忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems of high cost and low efficiency existing in the existing coal-fired additives, the present invention provides a coal-fired additive with high coal-saving efficiency, desulfurization, denitrification, smoke elimination effects, and low use cost

Method used

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  • Fuel coal additive and preparation method thereof
  • Fuel coal additive and preparation method thereof
  • Fuel coal additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The raw materials are weighed according to the following ratio (by mass percentage): 35% of glycerol; 12.1% of sodium peroxide; 20.7% of potassium hydroxide; 15% of borax; 8.7% of sodium silicate; According to the order of glycerol—water—potassium hydroxide—borax—sodium silicate—sodium peroxide, add the above-mentioned raw materials into the stirrer and stir. After all the above raw materials are added, continue to mix and stir for 120 minutes, and control the temperature of the mixture within the range of 60°C to 95°C to prevent the mixture from being oxidized and decomposed due to overheating. After the stirring is completed, wait for it to cool down to 40°C to 50°C, and put the mixture (that is, the additive stock solution) into barrels and put it into storage.

[0032] After determination, the physical and chemical parameters of the additive stock solution are:

[0033] 1. Water solubility - can be used as non-combustible, non-corrosive to iron.

[0034] 2. Specif...

Embodiment 2

[0047] The difference between embodiment 2 and embodiment 1 is: the proportioning of the raw material components taken by weighing is glycerol 36%, potassium hydroxide 20.5%, sodium peroxide 12%, borax 14%, sodium silicate 8% , Water 9.5%.

[0048] The using method of additive is the same as embodiment 1.

[0049] In the case of stable working conditions, the combustion of coal with additives and coal without additives is also compared to obtain the following parameters, as shown in Table 3:

[0050] table 3

[0051]

Embodiment 3

[0053] The difference between embodiment 3 and embodiment 1 and embodiment 2 is: the proportioning of the raw material components taken by weighing is glycerol 42.8%, potassium hydroxide 18.2%, sodium peroxide 11.2%, borax 13.5%, silicon Sodium acid 6.8%, water 7.5%.

[0054] The using method of additive is the same as embodiment 1.

[0055] In the case of stable working conditions, the following comparative parameters are obtained for the combustion of coal with the same additives and the combustion without additives, as shown in Table 4.

[0056] Table 4

[0057]

[0058] In the present invention, glycerin can be mixed with coal gas for combustion at high temperature, thereby increasing the combustion calorific value, and simultaneously burning with smoke dust can serve the purpose of eliminating smoke. Potassium hydroxide or sodium hydroxide, releases K at high temperature + or Na + Ions and SO in flue gas 2 React with nitrogen oxides to generate sulfate and nitrate...

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Abstract

The invention belongs to the technical field of fuel coal additives, discloses a fuel coal additive and a preparation method thereof, and solves the problems that the conventional fuel coal additive is high in cost and low in efficiency. The preparation method comprises the following steps: using glycerol as a main raw material to work together with potassium hydroxide or sodium hydroxide, sodium peroxide, borax and sodium silicate, using water as a solvent, and uniformly mixing to prepare an additive stock solution. When in use, the additive is diluted according to the ratio of the additive to water to coal of (1-4):40:4000, and then the solution is uniformly sprayed on the surface of pre-burning coal through a spray nozzle to be put into a boiler to be burnt. Testing results show that the fuel coal additive has the advantages of high coal-saving efficiency, obvious desulfuration, denitration and smoke abatement effects, low use cost and the like, the coal is saved by 5-20%, the sulfur dioxide and nitrogen oxide emission is reduced by 31%-50%, and the slag carbon content is reduced by 10%-12%.

Description

technical field [0001] The invention belongs to the technical field of coal-burning additives, and in particular relates to a coal-burning additive and a preparation method thereof. Background technique [0002] As my country vigorously promotes industrialization and urbanization, the national economy develops rapidly, and coal consumption continues to increase. Coal-fired consumption has become a key industry that pollutes the environment. There are still a large number of coal-fired boilers that do not add coal-fired additives and continue to burn directly in the traditional way, which has the following disadvantages: [0003] 1. Insufficient coal combustion, slow heating of the boiler, low thermal efficiency, wasting a lot of precious energy. [0004] 2. Unburned residual carbon is contained in the smoke exhaust, resulting in a large amount of smoke exhaust, black smoke, and polluting the environment. [0005] 3. Coal combustion contains sulfide and nitrogen oxides, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 李克忠于凯
Owner 李克忠
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