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High-efficient and low consumptive fire coal additive agent special for boiler

A coal-fired additive and high-efficiency technology, applied in the field of additives, can solve the problems of secondary pollution, inability to play a role in supporting combustion, and lack of pertinence, and achieve the effects of increasing the coal saving rate and achieving a significant desulphurization effect.

Inactive Publication Date: 2009-02-04
邹炎龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing coal additives include inorganic salts and adding a small amount of organic compounds on the basis of inorganic salts. The components of inorganic salts are different, and the effects are not the same. Some are reused waste, which are not targeted and used in large quantities; The purpose of adding low-molecular organic compounds is to increase the temperature during the ignition stage to promote the combustion of coal. However, organic compounds have the characteristics of fast combustion and high oxygen consumption. Polymers, the purpose is to crack organic polymers into small molecular hydrocarbons or oxygen-containing alkanes at low temperatures to promote the rapid combustion of coal, but it may also produce toxic substances during the decomposition process and cause secondary pollution

Method used

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  • High-efficient and low consumptive fire coal additive agent special for boiler
  • High-efficient and low consumptive fire coal additive agent special for boiler
  • High-efficient and low consumptive fire coal additive agent special for boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to parts by weight, 28 parts of magnesium chloride, 33 parts of sodium nitrate, 22 parts of potassium nitrate, 12 parts of sodium chlorate, 13 parts of potassium chlorate and 4 parts of potassium permanganate are mixed evenly.

[0027] The above additive formula was tested in a reciprocating furnace, and the basic situation without adding coal-fired additives is as follows:

[0028] (1) The fire is weak, the flame in the flame and the internal flame do not burn strongly, see Figure 1a ;

[0029] (2) The grate ash box of the boiler has a lot of ash and a high carbon content in the ash;

[0030] (3) There is a lot of soot in the flue and the color of the soot is dark;

[0031] (4) The chimney smoke elimination and dust reduction equipment produces a lot of ash with the circulating water, and the color is dark;

[0032] (5) The phenomenon of black smoke from the chimney is more serious;

[0033] (6) Due to the serious sintering of the slag, the operators have...

Embodiment 2

[0045] According to parts by weight, 25 parts of magnesium chloride, 30 parts of sodium nitrate, 20 parts of potassium nitrate, 10 parts of sodium chlorate, 10 parts of potassium chlorate and 3 parts of potassium permanganate are mixed evenly.

[0046] The above-mentioned additive formula was tested in a round furnace, and the basic situation when no coal-fired additive was added is as follows:

[0047] (1) The 24-hour coal consumption is 2.7T, and the temperature at the temperature measurement point is about 1090-1110°C;

[0048] (2) The second half of the furnace hall is not filled with flames, and the combustion is not strong enough, see Figure 2a ;

[0049] (3) The coal in the furnace is closely piled together, the phenomenon of slagging and coking is serious, and the coal combustion is not sufficient, see image 3 ;

[0050] (4) The phenomenon of black smoke from the chimney is relatively serious, and the carbon content in the slag ash is relatively high;

[0051] (5...

Embodiment 3

[0062] According to parts by weight, 22 parts of magnesium chloride, 28 parts of sodium nitrate, 18 parts of potassium nitrate, 8 parts of sodium chlorate, 8 parts of potassium chlorate and 2 parts of potassium permanganate are mixed evenly.

[0063] After adding coal-fired additives according to the weight ratio of additives and coal of 3:1000, the above formula additives were tested in the chain furnace, and it was also found that the coal combustion intensity was enhanced, the coal seam was loose, the slagging and coking were reduced, and the carbon content of the slag was low. , the improvement of the black smoke phenomenon and the saving of coal and other beneficial effects.

[0064] Coal saving rate:

[0065] The average coal consumption of 10,000-meter paperboard before adding additives is 651.13kg, and the average coal consumption of 10,000-meter paperboard after adding additives is 507.86kg.

[0066] Coal saving rate = (average coal consumption of 10,000 meters of pape...

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Abstract

The present invention discloses boiler-dedicated high-efficiency low-consumption coal additive, which contains the ingredients with the following weight portions: 20 to 30 portions of magnesium chloride, 25 to 35 portions of sodium nitrate, 15 portions to 25 portions of potassium nitrate, 5 to 15 portions of sodium chlorate, 5 to 15 portions of potassium chlorate and 1 to 5 portions of potassium permanganate; and the weight portion ratio of the additive and coal is 1 to 3 : 1000. The additive has the following advantages: the burning intensity of coal is enhanced; the temperature of a furnace is increased; the burning area of a furnace chamber is expanded; a layered coal bed becomes expanded and loose; the effects of decoking, ash-cleaning and desulphurizing are good; and the coal-saving rate is increased.

Description

technical field [0001] The invention relates to an additive, in particular to a high-efficiency and low-consumption coal-fired additive for boilers. Background technique [0002] At present, coal is still the main energy source for industrial boilers in my country. However, due to the different quality of coal, problems such as incomplete combustion of coal, slagging and coking in the furnace, high carbon content in cinder, excessive dust, and release of harmful gases often occur. In order to improve the combustion efficiency of coal and reduce the generation of waste slag and waste gas, additives are mostly used in the process of coal combustion. The existing coal additives include inorganic salts and adding a small amount of organic compounds on the basis of inorganic salts. The components of inorganic salts are different, and the effects are not the same. Some are reused waste, which are not targeted and used in large quantities; The purpose of adding low-molecular organ...

Claims

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Application Information

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IPC IPC(8): C10L9/10
Inventor 邹炎龙
Owner 邹炎龙
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