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The application effect of the nano heat insulation board on the industrial furnace is remarkable, and the universality is strong[2016/9/23]

At present, China has a total of about 120,000 industrial furnaces, the annual total energy consumption of 250 million tons of standard coal, accounting for about a quarter of the total energy consumption of the country, accounting for 60 % of the total energy consumption of industry. Therefore, the energy conservation of industrial furnaces has great potential. The energy-saving technology of heat insulation materials developed rapidly in recent ten years has attracted much attention because of its remarkable energy-saving benefits and attractive development prospect. The data of many countries show that the new high-efficiency heat insulation materials can save 15 % ~ 30 % energy in industrial furnaces instead of the traditional heat insulation refractory bricks. For the heat storage and heat dissipation of industrial furnace lining, generally accounts for 20 % ~ 45 % of the total energy consumption of the furnace. the selection of high quality, energy-saving refractory material can reduce the heat storage and heat dissipation loss of the furnace body, improve the thermal efficiency, so as to achieve the purpose of energy saving.

What is the effect of using nano thermal insulation panels in steel mills?[2016/9/18]

Through the application of nano thermal insulation board to the converter of Angang No.4 steel-making plant; ( 1 ) The nano heat insulation plate doe not appear pulverization phenomenon and the converter shell is not deform after being used at a high temperature, and the temperature of the furnace shell is reduce by more than 11 deg c compared with that of the polycrystalline fiberboard, so that the safety of the lining is improved, the heat loss of the converter is reduced, the smelting time is reduced, the labor intensity is reduced, the maintenance cost is saved, and the heat efficiency of the converter is improved, and the nano heat insulation plate has important significance for steelmaking production. ( 2 ) Each converter can save more than 50 t of molten iron and save more than 100,000 yuan of cost all the year round; Due to the expansion of converter capacity ratio, each steel loading increased 4 t, the annual output of each converter can increase 47.52 million t, increase the output value of 95.04 million yuan, has obvious economic benefits.

What are the characteristics of nano aerogel insulation felt? How?[2016/9/13]

1.1Thermal conductivity of nanometer aerogel insulation felt Aerogel is a kind of nano-pore network structure formed by the mutual aggregation of colloidal particles or polymer molecules. the common nano-aerogel insulation felt is a highly dispersed solid material composed of SiO _ 2 Network skeleton and gas filled in nano - pores. Has more than 80 percent of porosity, and the pore diameters of the nano aerogel thermal insulation felts are mesopores between 2 and 50 nm formed by interconnecting nano network frameworks, the density is only 30 to 100 kg / m3, and the thermal conductivity of the nano aerogel thermal insulation felts is only 0102 w / ( m k ) at normal temperature. Therefore, nano aerogel insulation felt is a typical lightweight and excellent thermal insulation material. 1.2 Transmission characteristics of aerogel insulation felt At high temperature, the thermal radiation energy of infrared ray with wavelength less than 8μm will almost pass through aerogel, which leads to the sharp rise of thermal conductivity of nano aerogel insulation felt. in order to reduce the thermal conductivity of radiation, it is necessary to compound the opacifier which can absorb or scatter infrared light in nano aerogel insulation felt. common infrared opacifiers are carbon black, TiO _ 2 and so on.

Application example of nano aerogel insulation felt[2016/9/13]

Nano - aerogel insulation felt is the best choice for equipment that requires insulation while also requiring small volume and light weight. Such as steel ladles, torpedo cans, tundish and the like in the metallurgical industry, the expansion increment of the equipment can be realized by utilizing the nano aerogel thermal insulation felt on the premise of not changing the steel structure, and meanwhile, good thermal insulation effect can be achieved. Nano aerogel insulation blanket was used to replace the traditional insulation board on a 100 ton ladle in a steel plant

What is the research progress of nano aerogel insulation felt at home and abroad?[2016/9/9]

Nano aerogel materials have been found as early as 70 years ago, in 1931, the Pacific university of California kistlers using supercritical drying method to remove water from the hydrogel, obtained the first non-shrink nano aerogel insulation felt, but the early aerogel is very fragile, and very expensive, so it is mainly used in the laboratory. It was not until 10 years ago that NASA became interested in the material and made it more practical to use that it finally walked out of the lab. In recent years, the development of thermal insulation materials abroad has been accelerated obviously. due to the development of the whole nano - technology, people pay more attention to the nano-thermal insulation materials. the research in the United States and Europe is very active, and Japan and Korea have also carried out more development. Aspen has studied the thermal insulation mechanism of nano aerogels earlier, especially the development and application of flexible nano aerogels thermal insulation felt. However, the u s nano aerogel insulation blanket is completely banned for China.

What are the characteristics of nano aerogel insulation felt[2016/9/9]

Nano aerogel thermal insulation felt is a kind of controllable structure of nano porous lightweight material, it has the characteristics of nano structure ( pores 1 ~ 100 nm, skeleton particles 1 ~ 20 nm ), large surface area ( up to 800 ~ 1000 m2 / g ), high porosity ( up to 80 % ~ 99.8 % ) and so on. The unique structural characteristics of nano aerogel insulation felt make aerogel have singular properties in thermal, electrical, acoustic, optical and other aspects. The thermal conductivity of the nano aerogel thermal insulation felt can reach below 0.013 w / ( m k ), which is far lower than the thermal conductivity of air at normal temperature of 0.025 w / ( m k ). the nano aerogel thermal insulation felt is one of the best thermal insulation properties of all solid materials, and has the advantages of low density, water resistance, flame retardance, green environmental protection, acid and alkali resistance, corrosion resistance, difficult aging and long service life, which are incomparable to other traditional materials. the nano aerogel thermal insulation felt has high added value, so the nano aerogel thermal insulation felt is called a super thermal insulation material, and has great application potential in many fields, such as building energy conservation, environmental protection, aerospace, oil pipelines, solar heat collection and furnaces

Advantages of using nano heat insulation board as heat insulation layer in steel ladle[2016/9/5]

Iron and steel production process is a typical high temperature metallurgical process, effective control of molten steel temperature is one of the key factors to ensure smooth production and casting quality. The heat transfer of ladle in the process of production turnover has a direct impact on the temperature change of molten steel in the process of steel filling and casting.

Application of nano aerogel insulation felt in agriculture facility[2016/8/31]

In recent years, the research on improving the flexibility of nano aerogels has been increasing gradually. Flexible nano aerogels thermal insulation felt, nano aerogels thermal insulation board and other composite materials have been prepared and applied in energy-saving buildings, metallurgy, aerospace and solar collectors and other industries.

Calculation of economic benefits of application of nanoporous thermal insulation materials[2016/8/31]

The application of nano heat insulation board reduced the surface temperature of 210 tons ladle from 310 ℃ to 220 ℃. The ladle is considered as a heat source with constant surface temperature and heat dissipation, and the difference of heat dissipation between the heat sources at different surface temperatures is investigated separately. That is to say, the ladle and the molten steel loaded in the ladle are considered as a whole object, because the ladle filled with the molten steel has much more heat than the surface heat dissipation amount, the internal temperature of the ladle is far higher than the ambient temperature, and the external surface of the ladle has no forced cooling medium, the ladle can be regarded as a cylinder with constant surface temperature, and the heat dissipation amount is independent of the temperature of the molten steel contained in the ladle, and is only related to factors such as the surface temperature of the ladle, environmental conditions and the like.

Application of nano heat insulation board in steel industry[2016/8/31]

Nano - thermal insulation panels are widely used in steel industry. This paper lists several common applications for your reference: 1.Application of nano heat insulation board in steel ladle The use method comprises the following steps: cleaning the inner wall of the ladle, coating a high-temperature adhesive on the ladle wall, pasting nano microporous heat insulation felt, and sequentially laying a permanent layer and a working layer. Use effect: