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Heat storage material for solar thermal power generation and preparation method of heat storage material

A technology for solar thermal power generation and heat storage material, which is applied in the field of using brown corundum as coarse aggregate and white corundum clinker as fine aggregate, to achieve the advantages of improving stability and service life, improving thermal shock resistance and improving comprehensive performance. Effect

Inactive Publication Date: 2015-06-03
中广核太阳能开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a heat storage material for solar thermal power generation and its preparation method, thereby solving the aforementioned problems in the prior art

Method used

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  • Heat storage material for solar thermal power generation and preparation method of heat storage material
  • Heat storage material for solar thermal power generation and preparation method of heat storage material
  • Heat storage material for solar thermal power generation and preparation method of heat storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Formula: brown corundum aggregate: particle size 10-30mm, 36 parts by weight

[0052] White corundum aggregate: particle size 1-10mm, 34 parts by weight

[0053] Aluminum sol: 9 parts by weight

[0054] Activated alumina powder: particle size 500 mesh, 4 parts by weight

[0055] Silica powder: particle size 500 mesh, 5 parts by weight

[0056] Kyanite: particle size 500 mesh, 7 parts by weight

[0057] Silicon carbide: particle size 800 mesh, 5 parts by weight

[0058] Add 0.3 parts by weight of high-efficiency composite water reducer.

[0059] Preparation:

[0060] Take brown corundum aggregate, white corundum aggregate, aluminum sol, activated alumina powder, silicon micropowder, kyanite and silicon carbide, add high-efficiency composite water reducer, dry mix evenly, add 5 parts by weight of water, After mixing evenly, place it in a steel mold, demould after 24 hours, cure in water at a temperature of 20-25°C for 72 hours, and bake at a temperature of 100-120°C...

Embodiment 2

[0063] Formula: brown corundum aggregate: particle size 10-30mm, 38 parts by weight

[0064] White corundum aggregate: particle size 1-10mm, 32 parts by weight

[0065] Aluminum sol: 8 parts by weight

[0066] Activated alumina powder: particle size 500 mesh, 5 parts by weight

[0067] Silica powder: particle size 500 mesh, 4 parts by weight

[0068] Kyanite: particle size 500 mesh, 9 parts by weight

[0069] Silicon carbide: particle size 800 mesh, 4 parts by weight

[0070] Add 0.3 parts by weight of high-efficiency composite water reducer.

[0071] Preparation:

[0072] Take brown corundum aggregate, white corundum aggregate, aluminum sol, activated alumina powder, silicon micropowder, kyanite and silicon carbide, add high-efficiency composite water reducer, dry mix evenly, add 6.2 parts by weight of water, After mixing evenly, place it in a steel mold, demould after 24 hours, cure in water at a temperature of 20-25°C for 72 hours, and bake at a temperature of 100-120...

Embodiment 3

[0075] Formula: brown corundum aggregate: particle size 10-30mm, 40 parts by weight

[0076] White corundum aggregate: particle size 1-10mm, 30 parts by weight

[0077] Aluminum sol: 7 parts by weight

[0078] Activated alumina powder: particle size 500 mesh, 6 parts by weight

[0079] Silica powder: particle size 500 mesh, 5 parts by weight

[0080] Kyanite: particle size 500 mesh, 9 parts by weight

[0081] Silicon carbide: particle size 800 mesh, 3 parts by weight

[0082] Add 0.3 parts by weight of high-efficiency composite water reducer.

[0083] Preparation:

[0084] Take brown corundum aggregate, white corundum aggregate, aluminum sol, activated alumina powder, silicon micropowder, kyanite and silicon carbide, add high-efficiency composite water reducer, dry mix evenly, add 5.3 parts by weight of water, After mixing evenly, place it in a steel mold, demould after 24 hours, cure in water at a temperature of 20-25°C for 72 hours, and bake at a temperature of 100-120...

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Abstract

The invention provides a heat storage material for a solar thermal power generation and a preparation method of the heat storage material. The composition of the heat storage material is subjected to optimization design, and the overall performance is greatly improved. A micro powder technology is adopted, an enhancement effect of nanoparticles is utilized, and high-efficiency water reducing agents and low-dosage alumina sol are taken as cementing agents, so that the amount of the alumina sol in the heat storage material is greatly reduced (namely the production energy consumption of raw materials is reduced), the amount of mixing water is reduced, the stability of the heat storage material at the operating temperature of 700-1000 DEG C is greatly improved, and the service life of the heat storage material is prolonged; brown aluminum oxide and white corundum are taken as aggregates, so that the high-temperature performance of the material can be greatly improved, and the thermal shock resistance of the heat storage material is improved; the pores in the concrete are filled with doped micro powder (silica powder and activated aluminum oxide powder), so that the density and strength of the concrete are improved; and moreover, because the carbon fibers have high heat-conducting property, high toughness and other performances, the heat storage rate and heat release rate of the heat storage material can be further improved.

Description

technical field [0001] The invention relates to the technical field of preparation of heat storage materials for solar high-temperature thermal power generation, in particular to a kind of brown corundum as coarse aggregate, white corundum clinker as fine aggregate; aluminum sol as cement; adding silicon micropowder, active oxidation A heat storage material prepared from aluminum powder, silicon carbide powder, kyanite stone and other fine powders and carbon fiber, and a preparation method thereof. Background technique [0002] At present, the heat storage materials used in solar steam power generation mainly include molten salt (KN0 3 , NaN0 3 or a mixture of both), iron ore. However, there is a very obvious defect in molten salt, which is its strong corrosiveness, which has a very strong corrosion behavior on heat exchange pipes and other auxiliary facilities, which increases the operating cost of the power plant and reduces the safety and stability of the system. Iron ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/06C04B14/30C04B14/38
Inventor 谢昭荆汝林朱教群周卫斌邱河梅
Owner 中广核太阳能开发有限公司
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