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Large-specification quartziferous ceramic heat accumulator and preparing technology thereof

A preparation process and heat storage body technology, applied in the field of industrial energy saving and emission reduction equipment, can solve the problems of honeycomb ceramics in terms of wear resistance, low corrosion resistance, low mechanical strength, easy to block the flue, etc., to improve heat Excellent exchange efficiency, good corrosion resistance, and less dust accumulation

Inactive Publication Date: 2016-11-09
北京神雾电力科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a quartz large-scale ceramic regenerator and its preparation process, which are used to solve the problem of poor wear resistance and corrosion resistance of existing honeycomb ceramics, irregular shape, small size, short length, large aperture, and wall Thick, easy to block the flue during use, large waste of heat energy, low heat exchange efficiency, low mechanical strength, short life and other technical problems

Method used

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  • Large-specification quartziferous ceramic heat accumulator and preparing technology thereof
  • Large-specification quartziferous ceramic heat accumulator and preparing technology thereof
  • Large-specification quartziferous ceramic heat accumulator and preparing technology thereof

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Embodiment 1

[0034]The large-scale ceramic regenerator produced has a square cross-section; its preparation process is: (1) dry mixing, firstly add the inorganic powder into the ball mill, dry mix for 4 hours, pass through a 100-mesh sieve, and the inorganic powder is made of the following weight Proportioned components: 16 parts of quartz stone, 17 parts of mullite, 10 parts of cordierite, 8 parts of kaolin, 14 parts of potassium feldspar, 2 parts of silicon nitride, 3 parts of boron nitride, and 2 parts of α-alumina (2) Adding additives, the additive components are 2 parts by weight of methyl cellulose, 1 part by weight of hydroxyethyl cellulose, 1 part by weight of polyvinyl alcohol, 1 part by weight of polyethylene oxide, and 2 parts by weight of (polyethylene glycol 400) (3) Kneading, add water and lubricating oil while stirring in the kneader, when kneading, after adding 400kg of material, add water in 5 times while stirring, continue stirring for 5 minutes after adding water, and add...

Embodiment 2

[0037] The large-scale ceramic regenerator produced has a rectangular cross-section; its preparation process is: (1) dry mixing, firstly add the inorganic powder into the ball mill, dry mix for 6 hours, pass through the 80-mesh sieve, the inorganic powder includes the following weight Proportioned components: 17 parts of quartz stone, 18 parts of mullite, 12 parts of cordierite, 10 parts of kaolin, 15 parts of potassium feldspar, 3 parts of silicon nitride, 4 parts of boron nitride, and 3 parts of α-alumina; (2) Adding additives, the additive components are 2 parts by weight of methyl cellulose, 1 part by weight of cyanoethyl cellulose, 1 part by weight of hydroxyethyl cellulose, 1 part by weight of polyvinyl alcohol, 1 part by weight of polyethylene oxide, butyl 2 parts by weight of diol; (3) kneading, add water and lubricating oil while stirring in the kneader, when kneading, after adding 400kg of material, add water in 3 times while stirring, continue to stir for 2 minutes a...

Embodiment 3

[0040] The large-scale ceramic regenerator produced has a square cross-section; its preparation process is: (1) dry mixing, first add inorganic powder into the ball mill, add the required powder into the ball mill, dry mix for 3 hours, pass 80 mesh Screen, inorganic powder includes the following components by weight: 18 parts of quartz stone, 20 parts of mullite, 14 parts of cordierite, 12 parts of kaolin, 16 parts of potassium feldspar, 2 parts of silicon nitride, boron nitride 4 parts, 4 parts of α-alumina; (2) Add additives, the additive components are 1 weight part of methyl cellulose, 2 weight parts of cyanoethyl cellulose, 1 weight part of polyvinyl alcohol, 1 weight part of polyethylene oxide, poly 2 parts by weight of propylene glycol; (3) kneading, add water and lubricating oil while stirring in the kneader, when kneading, after adding 400kg of material, first add half of the water after stirring for 15 minutes, continue stirring for 5 minutes, then add half of the rap...

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Abstract

A large-specification quartziferous ceramic heat accumulator is characterized by being of a column structure, a plurality of channels penetrating through a column body are formed in the heat accumulator, and the heat accumulator is formed by sintering inorganic powder and an additive, wherein the inorganic powder is prepared from, by weight, 15-20 parts of quartz stone, 15-20 parts of mullite, 9-15 parts of cordierite, 7-13 parts of kaolin, 13-18 parts of potassium feldspar, 2-4 parts of silicon nitride, 3-5 parts of boron nitride and 2-4 parts of alpha-aluminum oxide. The large-specification quartziferous ceramic heat accumulator has high formability and shape preserving performance. By means of the formula and the production method, the channels of the heat accumulator are dense, the wall thickness is small and is only 1 mm, the section size is large and is larger than 100 cm<2>, the length-diameter ratio is high, the length reaches 100 mm, and the channels have the advantages of being small in resistance, capable of capable of ensuring little dust accumulation, not prone to blockage, high in dust discharging performance and the like.

Description

technical field [0001] The invention belongs to the field of industrial energy-saving and emission-reduction equipment, and in particular relates to a quartz large-scale ceramic regenerator and a preparation process thereof. Background technique [0002] Regenerative combustion technology has been widely used in industrial furnaces, and one of its technical cores is high-temperature heat storage honeycomb body. Regenerative honeycomb ceramics have replaced traditional regenerative balls and checker bricks due to their good heat storage and release performance, high temperature performance and thermal shock resistance. When in use, the high-temperature flue gas and low-temperature gas (such as air gas) pass through the regenerator alternately in opposite directions by reversing the direction, so that the regenerator continuously absorbs heat and releases heat, and acts as a heat exchange medium to achieve flue gas and air gas. purpose of heat exchange. The specific process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/185C04B35/14C04B35/622F28D20/00
CPCC04B33/13C04B35/10C04B35/14C04B35/185C04B35/19C04B35/443C04B35/478C04B35/48C04B35/5611C04B35/565C04B35/622C04B35/64C04B35/65C04B35/66C04B35/803C04B38/00C04B38/0009C04B38/0058C04B2235/32C04B2235/3201C04B2235/3205C04B2235/3208C04B2235/3215C04B2235/3217C04B2235/3224C04B2235/3229C04B2235/3244C04B2235/3251C04B2235/3284C04B2235/3418C04B2235/3427C04B2235/3463C04B2235/3472C04B2235/3481C04B2235/349C04B2235/36C04B2235/3826C04B2235/3843C04B2235/3847C04B2235/386C04B2235/3873C04B2235/404C04B2235/405C04B2235/425C04B2235/428C04B2235/448C04B2235/5204C04B2235/5216C04B2235/5236C04B2235/5248C04B2235/5276C04B2235/5454C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/658C04B2235/95C04B2235/96C04B2235/9607C04B2235/9669C04B2235/9692F23D14/66F28D20/00F28D20/0056F28D2020/0017Y02E20/34Y02E60/14
Inventor 吴道君周守洪李军营姜朝兴杨晓波
Owner 北京神雾电力科技有限公司
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