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Fuel coal additive

A technology of coal-fired additives and sulfur-fixing agents, which is applied in the field of coal-fired additives, can solve the problems of insignificant energy-saving effects, and achieve the effects of good thermal insulation, sufficient combustion, and improved thermal efficiency

Inactive Publication Date: 2014-07-02
CHANGCHUN AODITE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this coal-fired additive can improve the combustion efficiency of coal, thereby improving the thermal efficiency of the boiler, it only increases the thermal efficiency of the boiler by about 12%, and the energy-saving effect is still not significant, so further development of more efficient coal-fired additives remains to be done.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] The preparation method of the coal-burning additive has simple process and low cost, and the use, storage and transportation of the coal-burning additive are relatively convenient.

[0063] When the above-mentioned coal-fired additives are applied to coal-fired coal, they can be mixed directly with the coal-fired coal, or mixed with the coal-fired coal by spraying, and then tested for environmental protection after burning in the furnace.

[0064] The test results show that the combustion area in the furnace is expanded, the thermal efficiency of the boiler is significantly improved, the coal saving effect is obvious, the carbon content of the slag is reduced, the smoke and dust are changed from black to white, and the emissions of sulfur oxides and nitrogen oxides are significantly reduced.

Embodiment 1

[0068] Stir 1kg of mixture consisting of 10% calcium oxide, 10% potassium permanganate, 10% potassium chlorate, 10% potassium perchlorate, 10% ferrocene, 20% sodium chloride and 30% perlite powder with 80kg of water to obtain Coal combustion additives;

[0069] The obtained coal-fired additive is added to 2t of coal-fired coal and stirred, fully mixed and burnt in the furnace. After environmental protection test, the following is obtained:

[0070] The thermal efficiency of the boiler has increased by 25%, the coal saving rate has been 26.6%, the carbon content of the slag has been reduced, the smoke and dust have changed from black to white, and the emissions of sulfur oxides and nitrogen oxides have been significantly reduced.

Embodiment 2

[0072] Stir 1kg of mixture consisting of 15% calcium oxide, 7% potassium permanganate, 8% potassium chlorate, 13% potassium perchlorate, 12% ferrocene, 15% sodium chloride and 30% perlite powder with 100kg of water to obtain Coal combustion additives;

[0073] Add the obtained coal-fired additive to the spray system and mix it with 2 tons of coal by spraying, and then put it into the furnace for combustion. After the environmental protection test, it is obtained:

[0074] The thermal efficiency of the boiler has increased by 22%, the coal saving rate has been 23.8%, the carbon content of the slag has been reduced, the smoke and dust have changed from black to white, and the emissions of sulfur oxides and nitrogen oxides have been significantly reduced.

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Abstract

The invention provides a fuel coal additive, which comprises the following components including, by weight, 10%-15% of sulfur-fixing agents, 20%-40% of oxidizing agents, 10%-15% of catalysts and 30%-50% of raising agents. The raising agents comprise sodium chloride and pearlite powder. The pearlite powder can instantly expand at high temperature and has good thermal insulation effects. The pearlite powder and sodium chloride can have synergistic effect and can burst easily when heated in a high-temperature region of a furnace cavity, air flow in a coal bed is stirred, ash on the surface of carbon granules is separated from combustion products, and accordingly the carbon granules burn more fully. The fuel coal additive enables heat efficiency of a boiler to be improved by over 22%, enables coal saving rate to reach over 23%, is remarkable in applying effects, and has more positive effects on energy saving and emission reduction. In addition, a preparation method of the fuel coal additive is simple in process, and the fuel coal additive is convenient in the aspects of using, storage and transportation.

Description

technical field [0001] The invention relates to the technical field of coal energy, in particular to a coal-burning additive. Background technique [0002] In my country, coal is one of the most important energy sources, but compared with relatively clean petroleum energy and natural gas energy, the development and utilization of coal energy cause the most serious environmental pollution, and the utilization efficiency of coal energy is also the lowest. Combustion efficiency and then improving the thermal efficiency of equipment has become one of the important topics of energy saving and emission reduction. [0003] At present, the existing technology mainly adopts the method of adding coal-fired additives to make the coal burn more fully, improve the thermal efficiency of the boiler, etc., so as to realize energy saving and emission reduction. , the coal-burning additive is prepared by adding 0.8 to 3.5 parts by weight of potassium chlorate, 0.5 to 3.2 parts by weight of po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10C10L9/12
Inventor 姜沛成姜志宏杨冬石
Owner CHANGCHUN AODITE TECH
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