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Nanometer composite coal-economizing agent for power plant boiler

A nano-composite and coal-saving agent technology, applied in the field of coal-fired additives, can solve the problems of not obvious desulfurization effect, inability to support combustion by burning coal in boilers, inconvenience in production and life, etc., to promote ion exchange and oxidation-reduction reactions, The effect of sufficient combustion and accelerated decomposition

Inactive Publication Date: 2013-10-23
渭南瑞鑫环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] During the coal combustion process of coal-fired boilers, due to the large ash content of coal and low calorific value, coking often occurs in the boiler. In severe cases, the boiler is forced to shut down, which brings inconvenience to production and life
At the same time, coal produces SO during the combustion process 2 and a few SO 3 Discharged into the atmosphere, seriously polluting the atmosphere
[0003] In order to vigorously carry out clean production and reduce pollutant emissions, at present, coal-fired boilers are generally installed with flue gas desulfurization devices. Although the installation of such desulfurization devices on coal-fired boilers has some effect on desulfurization, the existing combustion process and equipment need to be changed. And the desulfurization effect is not very obvious, and it does not play a combustion-supporting role in the combustion of boiler coal

Method used

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  • Nanometer composite coal-economizing agent for power plant boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Each raw material is weighed according to the following weight percentages: calcium hydroxide 30%, nano-titanium crystal 3%, sodium nitrate 15%, ammonium nitrate 10%, iron oxide 10%, aluminum oxide 10%, activated carbon 15%, sodium carbonate 7%; The nano-titanium crystal refers to nano-scale rutile phase TiO 2 powder.

[0020] The preparation process of this example is as follows: Weigh the raw materials according to the above weight percentages and mix them, then crush the mixed raw materials to a powder with a particle size of 80-100 meshes, and finally put the powders in a mixer and stir them evenly. Packaged into a finished product.

Embodiment 2

[0022] Each raw material is weighed according to the following weight percentages: calcium hydroxide 50%, nano-titanium crystal 4%, sodium nitrate 15%, ammonium nitrate 5%, iron oxide 6%, aluminum oxide 5%, activated carbon 5%, sodium carbonate 10%; The nano-titanium crystal refers to nano-scale rutile phase TiO 2 powder.

[0023] The preparation process of this embodiment is the same as that of Example 1.

Embodiment 3

[0025] Each raw material is weighed according to the following weight percentages: calcium hydroxide 25%, nano-titanium crystal 5%, sodium nitrate 10%, ammonium nitrate 10%, iron oxide 10%, aluminum oxide 15%, activated carbon 15%, sodium carbonate 10%; The nano-titanium crystal refers to nano-scale rutile phase TiO 2 powder.

[0026] The preparation process of this embodiment is the same as that of Example 1.

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Abstract

The invention discloses a nanometer composite coal-economizing agent for a power plant boiler, which is composed of the following raw materials, by weight percentage,: 25%-50% of calcium hydroxide, 2%-5% of nanometer titanium crystal, 5%-15% of sodium nitrate, 5%-15% of ammonium nitrate, 5%-12% of ferric oxide, 5%-25% of alumina, 5%-30% of activated carbon and 5%-20% of sodium carbonate. The nanometer titanium crystal is nanometer rutile phase TiO2 powder. The nanometer composite coal-economizing agent can accelerate CO and SO generated in coal burning to have a heat generating reaction, sulphur generated in the reaction is burned to become SO2 and little SO3, SO2 and little SO3 are finally fixed through adsorbent active carbon with strong adsorbing force in the coal-economizing agent to generate slag which is high in melting point, and desulfuration efficiency can reach 60%. The nanometer composite coal-economizing agent has the advantages of being remarkable in sulphur fixing and desulfuration effect, saving energy, supporting combustion, reducing blackness of discharged smoke, deashing and decoking and the like.

Description

technical field [0001] The invention belongs to the technical field of coal-burning additives, and in particular relates to a nanocomposite coal-saving agent for power plant boilers. Background technique [0002] During the coal combustion process of coal-fired boilers, due to the large ash content of coal and low calorific value, coking often occurs in the boiler. In severe cases, the boiler is forced to shut down, which brings inconvenience to production and life. At the same time, coal produces SO during the combustion process 2 and a few SO 3 Discharged into the atmosphere, seriously polluting the atmosphere. [0003] In order to vigorously carry out clean production and reduce pollutant emissions, at present, coal-fired boilers are generally installed with flue gas desulfurization devices. Although the installation of such desulfurization devices for coal-fired boilers has some effect on desulfurization, the existing combustion process and equipment need to be change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
Inventor 沈维新沈敬哲沈宗泰
Owner 渭南瑞鑫环保科技有限责任公司
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