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Coal polymeric additive capable of replacing partial coal as well as preparation method and application of coal polymeric additive

A technology to replace parts and additives, applied in the petroleum industry, solid fuel, fuel, etc., can solve the problems of few research results and unsatisfactory effects, and achieve the effects of reducing pollution, reducing coal consumption, and increasing heat release

Inactive Publication Date: 2015-05-06
聚合绿能科技发展(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As we all know, adding micro-nano powders to coal that can catalyze coal combustion and form a chemical reaction with coal ash can form a new inorganic solid-phase reaction exothermic system, catalyze coal combustion, and improve the radiation transmission inside the boiler. Thermal efficiency and other processes, thereby bringing the contribution of comprehensive calorific value, and realizing the effect of partially replacing coal, but there are few research results at present, and the effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A coal polymerization additive that can replace part of coal, comprising the following components in mass percentage: 5% oxidized light rare earth (Hunan Rare Earth Metal Research Institute), 30% coal series kaolin (Zibo Luke Refractory Co., Ltd.), 65% limestone. After mixing the above-mentioned components, the coal polymerization additive is obtained by grinding until the particle size is less than 200 mesh.

[0037] The above-mentioned obtained coal polymerization additive is equivalently replaced with 6-10wt% coal, and applied in pulverized coal furnace power station boiler, the effect of 4200-4500Kcal / kg coal 6-10wt% can be realized, and the boiler has no coking phenomenon, polluting gas ( NO x , SO 2 ) emissions are reduced.

Embodiment 2

[0039] A coal polymerization additive that can replace part of coal, comprising the following components in mass percentage: 6% oxidized light rare earth (Hunan Rare Earth Metal Research Institute), 35% coal series kaolin (Zibo Luke Refractory Co., Ltd.), 59% limestone. After mixing the above-mentioned components, the coal polymerization additive is obtained by grinding until the particle size is less than 250 mesh.

[0040] The coal polymerization additive obtained above is used to replace 5-10wt% of coal in an equal amount and applied to a pulverized coal furnace power station boiler, which can achieve the effect of 4500-5000Kcal / kg coal 5-10wt%, and the boiler has no coking phenomenon and pollutes the gas (NO x , SO 2 ) emissions are reduced.

Embodiment 3

[0042] A coal polymerization additive that can replace part of coal, comprising the following components in mass percentage: 10% oxidized light rare earth (Hunan Rare Earth Metal Research Institute), 40% coal series kaolin (Zibo Luke Refractory Co., Ltd.), 50% limestone. After mixing the above-mentioned components, the coal polymerization additive is obtained by grinding until the particle size is less than 400 mesh.

[0043] The coal polymerization additive obtained above is used to replace 6-12wt% of coal in an equal amount and applied to a pulverized coal furnace power plant boiler, which can achieve the effect of 6-12wt% of coal at 5000-5500Kcal / kg, and the boiler has no coking phenomenon and pollutes gas (NO x , SO 2 ) emissions are reduced.

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Abstract

The invention belongs to the technical field of coal energy sources and discloses a coal polymeric additive capable of replacing partial coal as well as a preparation method and an application of the coal polymeric additive. The additive comprises the following components in percentage by mass: 5-10% of light rare earth oxide, 30-40% of coal kaolin and 50-65% of limestone. Since a large amount of alkali metals, rare earth metals and oxides are added in the coal polymeric additive, during combustion, the oxygen-containing compounds can act as an oxygen supply carrier, has the effects of catalyzing combustion of the coal and enhancing heat released from coal combustion, has the environment-friendly benefits that the coal consumption is decreased, the energy conservation and emission reduction during coal combustion are achieved and the environmental pollution is alleviated, the purposes of reduction in coal consumption and the energy conservation and emission reduction during coal combustion are achieved; in the actual application, the coal polymeric additive disclosed by the invention can equivalently replace 5-12wt% of coal, and the coal polymeric additive can be widely used in the field of coal and especially applicable to large-sized boilers such as pulverized coal boilers and circulating fluidized bed boilers.

Description

technical field [0001] The invention belongs to the technical field of coal energy, and in particular relates to a coal polymerization additive capable of substituting part of coal, a preparation method and application thereof. Background technique [0002] China is currently one of the countries with the fastest economic development in the world, and the demand for energy is also increasing year by year. Coal accounts for about 70% of the energy consumption structure and is the main source of air pollution in China. Energy conservation and emission reduction, especially Energy saving and emission reduction in the process of coal combustion is the top priority of my country's energy saving and emission reduction work. In 2012, China's coal output was 3.66 billion tons, an increase of about 4% over the previous year. The large amount of pollutants produced during coal combustion is one of the important risk factors affecting public health in my country. Although the emission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/12
Inventor 杨劲伟胡大为朱方彬
Owner 聚合绿能科技发展(北京)有限公司
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