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
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  • Claims
  • Application Information

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Problems solved by technology

However, the pores of zeolite molecular sieves are mostly untreated, and the channels of molecular sieves are not

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
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Example Embodiment

[0026] Example 1:

[0027] (1) According to the mass ratio of 1:1.1, the 13X zeolite molecular sieve was added to distilled water and allowed to stand for 12 hours, then taken out and dried at 150° C. for 6 hours to obtain the 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 to magnesium trisilicate of 1:1, add magnesium trisilicate at 30 Stir at a high speed of 1800r / min for 30min at a temperature of ℃, stand for 6h, filter, and grind to obtain a mixed salt of micro-nano magnesium trisilicate and magnesium sulfate.

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

Example Embodiment

[0030] Example 2:

[0031] (1) According to the mass ratio of 1:3, the 13X zeolite molecular sieve was added to distilled water and allowed to stand for 18 hours, then taken out and dried at 300° C. for 10 hours to obtain the 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 to magnesium trisilicate of 3:1, add magnesium trisilicate, at 50 Stir at a high speed of 2000r / min for 60min at a temperature of ℃, stand for 8h, filter and grind to obtain a mixed salt of micro-nano magnesium trisilicate and magnesium sulfate.

[0033] (3) Add the mixed salt of magnesium trisilicate and magnesium sulfate to water, stir until a stable suspension is formed, add the pretreated zeolite molecular sieve, stir ultrasonically, let stand at room temperature for 24 hours, evaporate water, and place it at 300℃. Drying in a drying box for 10 hours...

Example Embodiment

[0034] Example 3:

[0035] (1) According to the mass ratio of 1:1.5, add the 13X zeolite molecular sieve to distilled water and let it stand for 12-18 hours, then take it out and dry it at 160° C. for 8 hours to obtain the 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 to magnesium trisilicate of 2:1, add magnesium trisilicate at 45 Stir at a high speed of 1900r / min for 45min at a temperature of ℃, stand for 7h, filter, and grind to obtain a mixed salt of micro-nano magnesium trisilicate and magnesium sulfate.

[0037] (3) Add the mixed salt of magnesium trisilicate and magnesium sulfate to water, stir until a stable suspension is formed, add the pretreated zeolite molecular sieve, stir ultrasonically, let stand at room temperature for 16 hours, evaporate water, and place at 150℃. Drying in a drying box for 6 hours, seale...

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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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