Preparation method and application of high-performance calcium-based heat carrier

A high-performance, calcium-based technology, applied in the field of energy storage materials, can solve the problem of difficulty in improving the uniformity of the calcium-based heat carrier, and achieve the effects of superior cycle energy storage characteristics, high energy storage activity, and improved tissue uniformity

Active Publication Date: 2022-05-27
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] This application provides a preparation method and application of a high-performance calcium-based heat carrier to solve the technical problem that the uniformity of the calcium-based heat carrier in the prior art is difficult to improve

Method used

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  • Preparation method and application of high-performance calcium-based heat carrier
  • Preparation method and application of high-performance calcium-based heat carrier
  • Preparation method and application of high-performance calcium-based heat carrier

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preparation example Construction

[0042] In an embodiment of the present application, as figure 1 As shown, a kind of preparation method of high-performance calcium-based heat carrier is provided, and described method comprises:

[0043] S1. obtain NaI solution;

[0044]S2. the CaO powder is fed into the described NaI solution in batches and stirs, carries out hydration reaction and dipping reaction, obtains the mixed solution of doped salt;

[0045] S3. the mixed solution mixed with salt is stirred, dried and ground to obtain the lime particles mixed with salt;

[0046] S4. calcining the lime particles mixed with salt to obtain a high-performance calcium-based heat carrier;

[0047] The molar ratio of NaI and CaO in the mixed solution is 1-5:90-105.

[0048] In this application, the positive effect that the molar ratio of NaI and CaO in the mixed solution is 1-5:90-105 is that NaI is a sodium salt with a low melting point, which is easy to promote the high-temperature sintering of CaO, and can also promote...

Embodiment 1

[0078] like figure 1 Shown, a kind of preparation method of high-performance calcium-based heat carrier, described method comprises:

[0079] S1. Obtain NaI solution;

[0080] S2. Feed the CaO powder in batches into the NaI solution and stir, carry out hydration reaction and impregnation reaction, and obtain the mixed solution mixed with salt;

[0081] S31. Perform the first stirring and drying of the mixed solution mixed with salt to obtain a lime sol mixed with salt;

[0082] S32. Carrying out the second stirring and drying of the lime sol mixed with salt to obtain the lime solid mixed with salt;

[0083] S33. Grinding the lime solids mixed with salt to obtain lime particles mixed with salt;

[0084] S4. Calcining the salt-doped lime particles to obtain a modified calcium-based heat carrier.

[0085] The molar ratio of NaI and CaO in the mixed solution is 2:100.

[0086] The mass concentration of NaI solution is 2%.

[0087] The temperature of the first stirring and dr...

Embodiment 2

[0098] Compare embodiment 2 and embodiment 1, the difference of embodiment 2 and embodiment 1 is:

[0099] The molar ratio of NaI and CaO in the mixed solution is 1:100.

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Abstract

The invention relates to the technical field of energy storage materials, in particular to a preparation method and application of a high-performance calcium-based heat carrier. The method comprises the following steps: obtaining a NaI solution; feeding CaO powder into the NaI solution in batches, stirring, and carrying out a hydration reaction and an impregnation reaction to obtain a salt-doped mixed solution; drying and grinding the salt-doped mixed solution to obtain salt-doped lime particles; the lime particles doped with the salt are calcined, and the high-performance calcium-based heat carrier is obtained; the molar ratio of NaI to CaO in the mixed solution is (1-5): (90-105); according to the application, the calcium-based heat carrier prepared through the method is used for the multi-cycle reaction of an energy storage system in concentrating solar power generation; according to the preparation method, CaO is taken as an impregnation carrier, NaI is taken as an impregnant, NaI is uniformly distributed in CaO powder, and the calcium-based heat carrier capable of keeping a stable pore structure in circulation is obtained.

Description

technical field [0001] The present application relates to the technical field of energy storage materials, in particular to a preparation method and application of a high-performance calcium-based heat carrier. Background technique [0002] The research and development of energy storage technology has always been valued by the energy, transportation, electric power, telecommunications and other departments of various countries. Among them, the introduction of energy storage links in the power system can effectively achieve demand-side management, not only more effective use of power equipment, and reduced energy consumption. The cost of power supply can also promote the application of renewable energy, and can also be used as a means to improve the stability of system operation, adjust frequency, and compensate for load fluctuations. [0003] At present, the demand energy storage technology in the power system is concentrated in the concentrated solar thermal power generatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/16
CPCC09K5/16Y02E70/30
Inventor 徐勇庆罗聪鲁博文李小姗邬凡罗童蔡国秋张立麒
Owner HUAZHONG UNIV OF SCI & TECH
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