Zirconium-oxide large-size ceramic regenerator and preparation 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, such as low wear resistance, low corrosion resistance, low mechanical strength, low heat exchange efficiency, etc., to achieve heat resistance Excellent impact and compression resistance, good corrosion resistance, and high heat exchange efficiency

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

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Problems solved by technology

[0005] The invention provides a zirconia-based large-scale ceramic regenerator and its preparation process, which are used to solve the problem of poor wear resistance and corrosion resistance, irregular shape, small size, short length and large aperture of the existing honeycomb ceramics. Wall thickness, 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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  • Zirconium-oxide large-size ceramic regenerator and preparation technology thereof
  • Zirconium-oxide large-size ceramic regenerator and preparation technology thereof
  • Zirconium-oxide large-size ceramic regenerator and preparation technology thereof

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Effect test

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: 80 parts of zirconia, 2 parts of alumina micropowder, 2 parts of silicon dioxide, 1 part of boron nitride, 1 part of neodymium oxide, 1 part of barium oxide, 2 parts of zinc oxide, 4 parts of carbon fiber; ( 2) Add additives, the additive components are 4 parts 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, in a kneader Add water and lubricating oil while stirring. When kneading, after adding 400kg of material, add water in 5 times while stirring. After adding water, continue stirring for 5 minutes and add tung oil at one time. Stop stirring...

Embodiment 2

[0037] 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 6 hours, pass through the 80-mesh sieve, and the inorganic powder is made of the following weight Proportioned components: 85 parts of zirconia, 4 parts of alumina micropowder, 3 parts of silicon dioxide, 2 parts of boron nitride, 2 parts of neodymium oxide, 1 part of barium oxide, 3 parts of zinc oxide, and 8 parts of carbon fiber; ( 2) Adding additives, the additive components are 1 weight part of methyl cellulose, 4 weight parts of cyanoethyl cellulose, 2 weight parts of polyvinyl alcohol, 1 weight part of polyethylene oxide, and 2 weight parts of polypropylene glycol; (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. After the water is added, continue stirring for 2 minutes and add...

Embodiment 3

[0040] The large-scale ceramic regenerator produced has a rectangular 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, and pass through 80 mesh The screen, the inorganic powder is composed of the following components by weight: 90 parts of zirconia, 6 parts of alumina micropowder, 4 parts of silicon dioxide, 2.0 parts of boron nitride, 2 parts of neodymium oxide, 2 parts of barium oxide, 3 parts of zinc, 5 parts of carbon fiber; (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 cyanoethyl cellulose, 2 parts by weight of polyvinyl alcohol, 1 part by weight of polyethylene oxide, 3 parts by weight of hexylene glycol; (3) Kneading, add water and lubricating oil while stirring in the kneader, when kneading, add 400kg of material, stir for 15 minutes and then ad...

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Abstract

Provided is a zirconium-oxide large-size ceramic regenerator. The zirconium-oxide large-size ceramic regenerator is characterized in that the regenerator is of a cylindrical structure and is internally provided with multiple pore channels penetrating through the cylinder, the regenerator is formed by sintering inorganic powder and additives, and the inorganic powder is prepared from, by weight, 80-92 parts of zirconium oxide, 2-8 parts of alumina micro powder, 2-5 parts of silicon dioxide, 1.0-2.5 parts of boron nitride, 1-3 parts of neodymium oxide, 1-3 parts of barium oxide, 2-4 parts of zinc oxide and 8-12 parts of carbon fibers. The zirconium-oxide large-size ceramic regenerator has good formability and shape-preserving performance. By means of the formula and production method, the pore channels of the regenerator are dense, the wall thickness is small and is only 1 mm, the sectional size is large and larger than 100 cm<2>, the length-diameter ratio is high, the length reaches 1,000 mm and all the pore channels have the advantages of being low in resistance, less in dust deposition, not prone to blocking, good in dust discharge 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 zirconia-based 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/48C04B35/622F28D20/00
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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