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Preparation method of magnesium trisilicate andmagnesium sulfate mixed salt/zeolite molecular sieve composite heat storage material

A technology of composite heat storage material and zeolite molecular sieve, which is applied in heat exchange materials, chemical instruments and methods, alkali metal compounds, etc., can solve problems such as the effective combination of unfavorable water and salt with zeolite molecular sieve, and achieve good adsorption performance and flow rate. The effect of changing performance, improving heat storage density, and increasing adsorption capacity

Inactive Publication Date: 2018-03-06
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pores of zeolite molecular sieves are mostly untreated, and the channels of molecular sieves are not fully opened, which is not conducive to the effective compounding of water and salt with zeolite molecular sieves.

Method used

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  • Preparation method of magnesium trisilicate andmagnesium sulfate mixed salt/zeolite molecular sieve composite heat storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) According to the mass ratio of 1:1.1, add 13X zeolite molecular sieve into distilled water and let it stand for 12 hours, take it out, and dry it at 150° C. for 6 hours to obtain pretreated zeolite molecular sieve.

[0028] (2) In parts by weight, add 1 part of anhydrous magnesium sulfate to 20 parts of distilled water and mix, according to the mass ratio of anhydrous magnesium sulfate and magnesium trisilicate as 1:1, add magnesium trisilicate, Stir at a high speed of 1800r / min for 30min at a temperature of 1800r / min, stand still for 6h, filter and grind to obtain a mixed salt of micronano-scale magnesium trisilicate and magnesium sulfate.

[0029] (3) Add the mixed salt of magnesium trisilicate and magnesium sulfate into water, stir until a stable suspension is formed, add pretreated zeolite molecular sieve, stir ultrasonically, let stand at room temperature for 12 hours, evaporate water, and place in a refrigerator at 120°C Dry in a drying oven for 5 hours, seal ...

Embodiment 2

[0031] (1) According to the mass ratio of 1:3, add 13X zeolite molecular sieve into distilled water and let it stand for 18 hours, take it out, and dry it at 300° C. for 10 hours to obtain pretreated zeolite molecular sieve.

[0032] (2) In parts by weight, add 5 parts of anhydrous magnesium sulfate to 25 parts of distilled water and mix, according to the mass ratio of anhydrous magnesium sulfate and magnesium trisilicate is 3:1, add magnesium trisilicate, at 50 Stir at a high speed of 2000r / min for 60min at a temperature of 2000r / min, let stand for 8h, filter and grind to obtain a mixed salt of micronano-scale magnesium trisilicate and magnesium sulfate.

[0033] (3) Add magnesium trisilicate and magnesium sulfate mixed salt into water, stir until a stable suspension is formed, add pretreated zeolite molecular sieve, stir ultrasonically, let stand at room temperature for 24 hours, evaporate water, and place in a 300°C refrigerator Dry in a drying oven for 10 hours, seal and s...

Embodiment 3

[0035] (1) According to the mass ratio of 1:1.5, add 13X zeolite molecular sieve into distilled water and let it stand for 12-18 hours, take it out, and dry it at 160°C for 8 hours to obtain pretreated zeolite molecular sieve.

[0036] (2) In parts by weight, add 2 parts of anhydrous magnesium sulfate to 23 parts of distilled water and mix, according to the mass ratio of anhydrous magnesium sulfate and magnesium trisilicate is 2:1, add magnesium trisilicate, at 45 Stir at a high speed of 1900r / min for 45min at a temperature of 1900r / min, let stand for 7h, filter and grind to obtain a mixed salt of micronano-scale magnesium trisilicate and magnesium sulfate.

[0037](3) Add the mixed salt of magnesium trisilicate and magnesium sulfate into water, stir until a stable suspension is formed, add pretreated zeolite molecular sieve, stir ultrasonically, let stand at room temperature for 16 hours, volatilize water, and place in a refrigerator at 150°C Dry in a drying oven for 6 hours,...

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Abstract

The invention provides a preparation method of a magnesium trisilicate andmagnesium sulfate mixed salt / zeolite molecular sieve composite heat storage material. The preparation method comprises the following steps: adding a 13X zeolite molecular sieve into distilled water for standing for 12 to 18 h, taking out the 13X zeolite molecular sieve, and drying to obtain a pretreated zeolite molecular sieve; adding anhydrous magnesium sulfate into distilled water for mixing, adding magnesium trisilicate, carrying out high-speed stirring at the temperature of 30 to 50 DEG C, standing, filtering, and grinding to obtain magnesium trisilicate andmagnesium sulfate mixed salt; adding the magnesium trisilicate andmagnesium sulfate mixed salt into water, stirring until a stable suspension liquid is formed, adding the pretreated zeolite molecular sieve, carrying out ultrasonic stirring, standing at a room temperature, volatilizing water, putting the mixture in a drying oven for drying, and carrying outsealing storage to obtain the magnesium trisilicate andmagnesium sulfate mixed salt / zeolite molecular sieve composite heat storage material. The compound heat storage material prepared in the invention is of a multistage porous structure, is high in porous permeability, large in specific surface area, large in adsorption capacity, large in adsorption force and little in heat loss, and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of zeolite molecular sieve composite heat storage materials, and in particular relates to a preparation method of magnesium trisilicate and magnesium sulfate mixed salt / zeolite molecular sieve composite heat storage materials. Background technique [0002] The shortage and low utilization rate of energy are becoming the bottleneck restricting the sustainable development of society and economy. Energy storage technology is considered to be one of the key technologies to effectively improve the comprehensive utilization efficiency of energy. It can realize the integration of energy supply and demand in time, space and intensity. Matching regulation, storing sufficient solar heat in spring, summer, and autumn for heating / hot water in winter is an important way to maximize the use of solar energy to improve building energy efficiency and achieve emission reduction goals. [0003] Thermochemical reaction heat sto...

Claims

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Application Information

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IPC IPC(8): C09K5/14B01J20/18B01J20/28B01J20/30
CPCC09K5/14B01J20/045B01J20/10B01J20/183B01J20/28054
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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