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Pulverized coal combustion improver for thermal power plant

A technology of combustion-supporting agent and thermal power plant, which is applied in the field of combustion-supporting agent, can solve the problem of difficult to obtain chemical activator, and achieve the effect of reducing content, promoting combustion-supporting effect, and promoting centralized combustion

Inactive Publication Date: 2012-07-11
洛阳大泽节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical activator used in it is difficult to obtain in nature, and the combustion effect of coal in thermal power plants is required to be higher. Therefore, a more ideal combustion aid is needed, which can further reduce the ignition point of coal powder and improve the combustion efficiency of coal powder. Utilization efficiency, saving coal more

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The composition (percentage by weight) of the pulverized coal combustion aid for thermal power plants is: 70% of manganese ore, 20% of chemical activator (composed of), 10% of clinker combustion aid (made of CuO 65%, Cr2O3 25%, lanthanide rare earth LaO2 10% composition). According to this, according to the addition of 0.06% into the pulverized coal, the clinker can be fired with low-quality coal with a calorific value of 19000-20000kJ / kg, the heat consumption of the clinker can be reduced, the coal can be saved by 15%, and the clinker can be used for 28 days. The compressive strength is increased by 4MPa.

Embodiment 2

[0024] The composition (percentage by weight) of the pulverized coal combustion aid for thermal power plants is: 50% manganese ore, 40% chemical activator (sodium aluminosilicate or potassium aluminosilicate), 10% clinker combustion aid (made of 65% CuO , Cr2O3 25%, lanthanide rare earth LaO2 10% composition). According to this, according to the addition of 0.04% into the pulverized coal, the clinker can be fired with low-quality coal with a calorific value of 18000-20000kJ / kg, the heat consumption of the clinker can be reduced, the coal can be saved by 15%, and the clinker can be used for 28 days. The compressive strength increased by 3.5MPa.

Embodiment 3

[0026] The composition (percentage by weight) of the pulverized coal combustion aid used in thermal power plants is: 60% of manganese ore, 30% of chemical activator (for sodium aluminosilicate or potassium aluminosilicate), 10% of clinker combustion aid (made of 65% CuO , Cr2O3 25%, lanthanide rare earth LaO2 10% composition). According to this, according to the addition of 0.05% into the coal powder, the clinker can be fired with low-quality coal with a calorific value of 18,000-20,000 kJ / kg, the heat consumption of clinker firing can be reduced, the coal can be saved by 16%, and the clinker can be used for 28 days. The compressive strength increased by 3.5MPa.

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Abstract

The invention discloses a pulverized coal combustion improver for a thermal power plant. The pulverized coal combustion improver comprises components with weight percentages as follows: 50 to 80 percent of manganese ore, 10 to 40 percent of chemical activator, 5 to 15 percent of clinker sintering agents and smaller than 2 percent of water, wherein the chemical activator is sodium aluminosilicate or potassium aluminum silicate. Raw materials of the chemical activator in the pulverized coal combustion improver are easy to obtain and an effect of saving more than 13 percent of coal can be achieved, so that the pulverized coal combustion improver has great economic benefits and is worthy of popularization.

Description

technical field [0001] The invention belongs to the technical field of combustion aids, in particular to a pulverized coal combustion aid for thermal power plants. Background technique [0002] Now there are many kinds of coal additives and combustion accelerants in the market, but few of them can really solve the problems of environmental protection and energy saving in the process of coal combustion, such as insufficient coal combustion, insufficient emission of dust and coking acidic harmful gases, etc. As a result, the thermal efficiency cannot be effectively improved. The invention patent application with the application number of 200910066215.2 discloses a pulverized coal combustion aid for cement kiln. 15%, and the water content is less than 2%; the chemical stimulant used is one or a combination of potassium nitrate, potassium carbonate, and sodium silicate. Through the joint action of manganese ore and chemical admixtures, it reduces the ignition point of coal pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 张亚南
Owner 洛阳大泽节能环保科技有限公司
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