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Preparation method of honeycomb ceramic heat storage material

A heat storage material, honeycomb ceramic technology, applied in ceramic products, clay products, applications, etc., can solve problems such as heat exchangers not operating normally, honeycomb body cracking or even crushing, poor thermal shock resistance, etc., and achieve improved plasticity. , Density increase, improve the effect of thermal shock resistance

Active Publication Date: 2017-12-12
唐山华纤科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the invention is: the traditional honeycomb ceramic heat storage material has poor thermal shock resistance and poor thermal stability during use, which causes the honeycomb body to be broken or even crushed due to temperature fluctuations, making the heat exchanger unable to operate normally problem, a preparation method of honeycomb ceramic heat storage material is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024]According to the mass ratio of 1:10, the rice husk and the mass fraction of 8% hydrochloric acid were mixed and soaked for 6 hours, filtered to obtain the filter residue, and the filter residue was washed with deionized water until the washing liquid was neutral, and then the washed filter residue was transferred to an oven. Dry to constant weight at a temperature of 105°C to obtain pickled rice husks, and transfer the obtained pickled rice husks into a carbonization furnace, and feed nitrogen gas into the furnace at a rate of 80 mL / min. / min rate program to heat up to 480 ° C, after 4 hours of heat preservation and carbonization, cool to room temperature with the furnace, and discharge to obtain carbonized rice husk material; in parts by weight, 30 parts of bauxite, 30 parts of kyanite, and 20 parts of kyanite were successively taken. 8 parts of organic matter, 8 parts of refractory clay, 8 parts of carbonized rice husk material, 4 parts of lubricant, 10 parts of water, ...

example 2

[0026] In parts by weight, get 30 parts of bauxite successively, 30 parts of kyanite, 20 parts of organic matter, 8 parts of refractory clay, 4 parts of lubricant, 10 parts of water, 8 parts of moss homogenate, 8 parts of biogas slurry, 3 parts of 1 part of glycerin, 1 part of vegetable oleic acid, mixed for 3 hours, left to stand at room temperature for 10 hours, and mixed and stale for 6 times to obtain mud; then transfer the mud to an extruder to extrude to obtain pottery and place the obtained pottery blanks in a greenhouse. Under the conditions of temperature at 12°C and humidity at 68%, adjust the light intensity to 800Lx. After 6 days of light, reduce the light intensity to 600Lx. After 6 days of light, continue to increase the light intensity Decrease to 400Lx, light for 8 days, after the end of the light, the light-modified ceramic body is obtained, and the obtained light-modified ceramic body is vacuum freeze-dried at a temperature of -50°C for 4 hours to obtain a dri...

example 3

[0028] According to the mass ratio of 1:10, the rice husk and the mass fraction of 8% hydrochloric acid were mixed and soaked for 6 hours, filtered to obtain the filter residue, and the filter residue was washed with deionized water until the washing liquid was neutral, and then the washed filter residue was transferred to an oven. Dry to constant weight at a temperature of 105°C to obtain pickled rice husks, and transfer the obtained pickled rice husks into a carbonization furnace, and feed nitrogen gas into the furnace at a rate of 80 mL / min. / min rate program to heat up to 480 ° C, after 4 hours of heat preservation and carbonization, cool to room temperature with the furnace, and discharge to obtain carbonized rice husk material; in parts by weight, 30 parts of bauxite, 30 parts of kyanite, and 20 parts of kyanite were successively taken. 1 part of organic matter, 8 parts of refractory clay, 8 parts of carbonized rice husk material, 4 parts of lubricant, 10 parts of water, ...

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Abstract

The invention discloses a preparation method of a honeycomb ceramic heat storage material, and belongs to the technical field of energy-saving and environment-friendly materials. According to the method, bauxite, cyanite, organic matters, refractory clay, charing rice husks, moss homogenate, biogas slurry, glycerol, plant oleic acid and the like are used as raw materials and are subjected to mixing, aging and circulation to prepare pug; then, the pug is subjected to extrusion forming to obtain a ceramic blank; then the ceramic blank is put into a constant-temperature and constant-humidity environment to be subjected to segmented illumination treatment; then, vacuum freeze drying is matched to obtain a dry ceramic blank; finally, the dry ceramic blank is prefired in a nitrogen gas protection state and is then sintered and shaped again; the honeycomb ceramic heat storage material is obtained. The product obtained by using the technical scheme has the advantages that the thermal shock resistance is excellent; the heat expansion coefficient is low; the high-temperature stability is high; the heat transfer efficiency is high; the application prospects are wide.

Description

technical field [0001] The invention discloses a method for preparing a honeycomb ceramic heat storage material, which belongs to the technical field of energy-saving and environment-friendly material preparation. Background technique [0002] Regenerative heat exchange technology is one of the technologies with the most development potential for energy saving and environmental protection in the 21st century. It is a key energy saving and environmental protection project promoted by the state. When the flue gas temperature is 900-1300°C, the waste heat of the flue gas accounts for 50-70% of the total energy consumption of the furnace. The waste heat recovery of gas is used to preheat the combustion air, which can fundamentally improve the energy utilization rate of industrial furnaces. Honeycomb ceramic is a heat storage body with superior performance, and it is the key material in heat storage and energy-saving technology. Its performance determines the overall performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B38/00
CPCC04B33/1305C04B33/131C04B38/0006C04B2235/3217C04B2235/3463C04B2235/3873C04B2235/422C04B2235/96C04B2235/9607
Inventor 朱浩明许蘅
Owner 唐山华纤科技有限公司
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