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Preparation method of nano-composite binary nitrate molten salt material

A nanocomposite and molten salt technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of power generation system performance and economic impact, low specific heat capacity of ordinary molten salt, etc., to facilitate large-scale application and increase specific heat capacity , the effect of simple production method

Inactive Publication Date: 2015-04-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the specific heat capacity of ordinary molten salt is low, which has an impact on the performance and economy of the power generation system

Method used

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  • Preparation method of nano-composite binary nitrate molten salt material
  • Preparation method of nano-composite binary nitrate molten salt material

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Experimental program
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specific Embodiment approach 1

[0021] Specific implementation one: as figure 1 As shown, the present embodiment prepares the nanocomposite binary nitric acid molten salt according to the following steps:

[0022] (1) Mix and grind 1.8 g of sodium nitrate and 1.2 g of potassium nitrate molten salt to obtain a molten salt mixture;

[0023] (2) Al with a mass of 15 mg and a diameter of 20 nm 2 O 3 The nanoparticles were added to 30ml of distilled water, followed by mechanical stirring, and then placed in an ultrasonic oscillator for ultrasonic vibration for 200 min to uniformly disperse the nanoparticles to obtain a nanoparticle suspension;

[0024] (3) Add the molten salt mixture to the nanoparticle suspension, first perform mechanical stirring, and then place it in an ultrasonic oscillator for ultrasonic vibration for 200 min to make the mixture evenly dispersed to obtain a suspension mixture, and control the quality of the nanoparticles to be a molten salt mixture 0.5% of the mass;

[0025] (4) Pour the...

specific Embodiment approach 2

[0026] Specific implementation two: as figure 1 As shown, the present embodiment prepares the nanocomposite binary nitric acid molten salt according to the following steps:

[0027] (1) Mix and grind 1.8 g of sodium nitrate and 1.2 g of potassium nitrate molten salt to obtain a molten salt mixture;

[0028] (2) Al with a mass of 30 mg and a diameter of 20 nm 2 O 3 The nanoparticles were added to 30ml of distilled water, followed by mechanical stirring, and then placed in an ultrasonic oscillator for ultrasonic vibration for 200 min to uniformly disperse the nanoparticles to obtain a nanoparticle suspension;

[0029] (3) Add the molten salt mixture to the nanoparticle suspension, first perform mechanical stirring, and then place it in an ultrasonic oscillator for ultrasonic vibration for 200 min to make the mixture evenly dispersed to obtain a suspension mixture, and control the quality of the nanoparticles to be a molten salt mixture 1% of the mass;

[0030] (4) Pour the s...

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Abstract

The invention discloses a preparation method of a nano-composite binary nitrate molten salt material. The preparation method comprises the following steps: (1) mixing sodium nitrate and potassium nitrate molten salt to grind to obtain a molten salt mixture; (2) adding Al2O3 nano-particles to distilled water, then mechanically stirring, and then placing in an ultrasonic concussion instrument to carry out ultrasonic wave concussion so that the nano-particles are uniformly dispersed to obtain nano-particle suspension liquid; (3) adding the molten salt mixture to the nano-particle suspension liquid, firstly mechanically stirring, and then placing in the ultrasonic concussion instrument to carry out ultrasonic wave concussion so that the mixture is uniformly dispersed to obtain suspension mixed liquid; and (4) pouring the suspension mixed liquid in a culture dish and placing in a vacuum drying box to dry to obtain nano-composite binary nitrate molten salt. According to the preparation method, the nano-particles are doped in conventional nitrate molten salt, the specific heat capacity of the nano-composite binary nitrate molten salt doped by the nano-particles is obviously improved, the preparation method is simple and convenient, and the preparation method is beneficial to large-scale application.

Description

technical field [0001] The invention relates to a preparation method of a nitric acid molten salt material, in particular to a preparation method of a nanocomposite binary nitric acid molten salt material. Background technique [0002] With the decrease of fossil fuels, solar energy has become an important part of the energy used by human beings, and it has been continuously developed. Solar power technology is a method of utilizing solar energy. At present, there are two main ways of solar power generation: one is solar photovoltaic power generation (PV), and the other is concentrated solar power generation (CPS). Compared with photovoltaic power generation, concentrated solar energy has a larger scale, lower cost, and better controllability, so it has huge development potential. Concentrated solar power relies on heat storage materials in heat removal equipment. Using molten salts such as nitrates, phosphates, and chlorides as heat storage materials can increase the ope...

Claims

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Application Information

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IPC IPC(8): C09K5/12
CPCC09K5/12
Inventor 何玉荣胡彦伟程珙陈梅洁朱嘉琦
Owner HARBIN INST OF TECH