Metal-chloride melt material with high heat conductivity as well as preparation method and application of metal-chloride melt material

A high thermal conductivity, chloride technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problem of low application research of chloride molten salt high-temperature heat transfer and heat storage materials, etc., to achieve comprehensive development and utilization, and enhance heat conduction Excellent performance and heat transfer

Inactive Publication Date: 2015-07-29
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent application with the application number 200510110315.2 has developed a heat storage system using calcium chloride hexahydrate as the heat storage medium and magnesium chloride hexahydrate as the nucleating agent for low-temperature heat storage. The application research of thermal materials is still relatively small

Method used

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  • Metal-chloride melt material with high heat conductivity as well as preparation method and application of metal-chloride melt material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A metal-chloride molten salt material, the preparation method is as follows:

[0027] 0.05wt% magnesium powder, 99.95wt% calcium chloride (the tailing waste salt in the salt lake potash fertilizer production process is refined to obtain, and the specific steps are according to "Zhang Shuxia et al. The feasibility of extracting dehydrated calcium chloride by using the old brine of the Hobson salt field Property analysis [J]. Yunnan Chemical Industry, 2008, 35 (4): 17-20 "operation, the material used in the following example is mixed with embodiment 1) and stirred uniformly, statically heated to 850 ℃ to all melting of solid, then heat preservation 8 hours , then naturally cooled to room temperature, and mechanically pulverized to obtain a metal-chloride molten salt material.

[0028] A differential scanning calorimeter was used to test the melting point of the metal-chloride molten salt material prepared in this example, and the test results are shown in Table 1. A Hotd...

Embodiment 2

[0030] A metal-chloride molten salt material, the preparation method is as follows:

[0031] Mix 0.1wt% magnesium powder and 99.9wt% calcium chloride and stir evenly, statically heat to 850°C until the solids are completely melted, then keep warm for 8 hours, then naturally cool to room temperature, and mechanically pulverize to obtain metal-chloride fusion salt material.

[0032] The test method is the same as in Example 1, and the results are shown in Tables 1-2.

Embodiment 3

[0034]A metal-chloride molten salt material, the preparation method is as follows:

[0035] Mix 0.3wt% magnesium powder and 99.7wt% calcium chloride and stir evenly, statically heat to 850°C until the solids are completely melted, then keep warm for 8 hours, then naturally cool to room temperature, and mechanically pulverize to obtain metal-chloride fusion salt material.

[0036] The test method is the same as in Example 1, and the results are shown in Tables 1-2.

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Abstract

The invention discloses a metal-chloride melt material with high heat conductivity as well as a preparation method and an application of the metal-chloride melt material. The metal-chloride melt material with high heat conductivity comprises components as follows: 0.05%-2% of metallic magnesium powder and 98%-99.95% of calcium chloride. The metallic magnesium powder and calcium chloride are mixed and stirred uniformly, heated in the inert gas protecting atmosphere until solids are completely smelted to liquids and then subjected to thermal insulation, cooling, smashing and drying, and the metal-chloride melt material with high heat conductivity is obtained. Raw materials of the metal-chloride melt material with high heat conductivity are from waste salt of tailings produced in the potash fertilizer production process of a salt lake, high-value utilization of the salt lake tailing waste salt is realized, and comprehensive development and environmental protection of the salt lake resources are realized; the system has a high heat conductivity coefficient and good heat conductivity and is applicable to the field of large-scale utilization and industrial energy conservation of renewable energy sources.

Description

technical field [0001] The invention belongs to the field of industrial energy saving and large-scale utilization of renewable energy, and in particular relates to a metal-chloride molten salt material with high thermal conductivity, a preparation method and an application. Background technique [0002] Industry is the largest end-use energy consumption sector in my country, accounting for about 70% of the country's total energy consumption. Among them, the large-scale raw material industry accounts for 43% of the country's total industrial output value, but its energy consumption accounts for 72% of the total industrial energy consumption and 52% of the country's total energy. The average recycling rate of waste heat is far below the international advanced level, which is the main reason for the low efficiency of industrial energy utilization. Taking high-temperature industrial waste heat recovery as an example, according to incomplete statistics, the 1000m 3 There are ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/12
CPCC09K5/12
Inventor 丁静田禾青魏小兰彭强王维龙陆建峰杨建平
Owner SUN YAT SEN UNIV
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