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A heat storage material for an air preheater in a power plant and a preparation method thereof

A heat storage material and air preheater technology, applied in the direction of heat exchange materials, chemical instruments and methods, combustion methods, etc., can solve the problems of acid corrosion resistance, air pollution, inner hole blockage, etc. Abrasion, well-formulated effects

Active Publication Date: 2017-04-12
湖北群有长物环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a new type of heat storage material for air preheater in power plants, which is used to solve the problem that the existing air preheater is not resistant to acid corrosion, easily reacts with corrosive components in flue gas, resulting in blockage of inner holes and reduction of flue gas to the level of flue gas. If the dew point of the flue gas is below the dew point, the waste heat of the flue gas cannot be recovered deeply, which will cause technical problems such as air pollution

Method used

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  • A heat storage material for an air preheater in a power plant and a preparation method thereof
  • A heat storage material for an air preheater in a power plant and a preparation method thereof

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Embodiment 1

[0018] Embodiment 1: A kind of production method of heat storage material of new type power plant air preheater, comprises the following steps:

[0019] 1) Weigh 25 parts of white corundum (1KG each, the same below), 30 parts of α-alumina, 20 parts of kaolin, 10 parts of quartz powder, 6.5 parts of talc, 5 parts of potassium feldspar, 3.5 parts of barium carbonate powder, pour into the powder mixing homogenizer (produced by Zhengzhou Yineng Technology Co., Ltd., the same below);

[0020] 2) Weigh 2.5 parts of water;

[0021] 3) take by weighing 0.4 part of tung oil;

[0022] 4) Turn on the powder mixing homogenizer, knead the above-mentioned materials in the powder mixing homogenizer, and then send the materials to the vacuum mud refining machine for initial refining, stale, refining, extrusion molding, Send it to the drying machine for shaping, drying, and firing to obtain the finished product.

Embodiment 2

[0023] Embodiment 2: A kind of production method of heat storage material of new type power plant air preheater, comprises the following steps:

[0024] 1) Weigh 30 parts of white corundum, 25 parts of α-alumina, 15 parts of kaolin, 10 parts of quartz powder, 3 parts of talc, 10 parts of potassium feldspar, and 7 parts of barium carbonate powder, and pour them into the powder mixing homogenizer middle;

[0025] 2) Weigh 3.5 parts of water;

[0026] 3) take by weighing 0.8 part of tung oil;

[0027] 4) Turn on the powder mixing homogenizer, knead the above-mentioned materials in the powder mixing homogenizer, and then send the materials to the vacuum mud refining machine for initial refining, stale, refining, extrusion molding, Send it to a microwave dryer for shaping, drying, and firing to obtain a finished product.

Embodiment 3

[0028] Embodiment 3: A kind of production method of heat storage material of new type air preheater of power plant, comprises the following steps:

[0029] 1) Weigh 35 parts of white corundum, 20 parts of α-alumina, 10 parts of kaolin, 10 parts of quartz powder, 5 parts of talc, 10 parts of potassium feldspar, and 10 parts of barium carbonate powder and pour them into the powder mixing homogenizer ;

[0030] 2) Weigh 4 parts of water;

[0031] 3) Weigh 1.2 parts of tung oil;

[0032] 4) Turn on the powder mixing homogenizer, knead the above-mentioned materials in the powder mixing homogenizer, and then send the materials to the vacuum mud refining machine for initial refining, stale, refining, extrusion molding, Send it to a microwave dryer for shaping, drying, and firing to obtain a finished product.

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Abstract

The invention provides a novel heat storage material of a power plant air pre-heater and a preparation method thereof. The novel heat storage material is formed by virtue of the following steps: mixing 25-50% of white corundum, 20-40% of alpha-alumium oxide, 10-20% of kaoline, 5-15% of quartz powder, 2-10% of talcum, 5-15% of potassium feldspar and 0-10% of barium carbonate together in a weight ratio, then putting the mixture in a powder mixing homogenizer, next, adding water and a lubricating grease, kneading the materials and then feeding the kneaded material into a vacuum pug mill for aging and refining, and then feeding the refined material into a dryer for setting and drying, and then firing. The novel heat storage material of the power plant air pre-heater is an anti-corrosive material as a whole, is capable of retarding the erosive wear of the pre-heater caused by particles, and further has excellent heat storage and release properties. Besides, the novel heat storage material is large in aperture and not easy to block, and also capable of well realizing cooling the waste gas below the dew point of the sulfuric acid and even lower and thus recycling more heat energy.

Description

technical field [0001] The invention relates to a power plant air preheater, in particular to a novel heat storage material for the power plant air preheater. Background technique [0002] Thermal power plants use coal as the main raw material, and the exhausted flue gas contains a large amount of SO2, SO3, water vapor and a large amount of dust. However, the air preheater needs to be in frequent contact with cold and hot gases, and the temperature impact is large. When the flue gas is in contact with the heat storage body, the heat is transferred to the heat storage body, and the temperature of the flue gas gradually decreases. When the temperature of the flue gas drops below the dew point of the flue gas, SO2 and SO3 in the flue gas combine with water to form sulfurous acid and Sulfuric acid, and condenses on the heat storage body. [0003] When the temperature of the regenerator of the existing air preheater reaches the dew point of the flue gas, the temperature of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/14F23L15/00
CPCY02E20/34
Inventor 吴道君王文寿李军营杨晓波
Owner 湖北群有长物环保科技有限公司
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