Высокотемпературная изоляция одеяла из керамического волокна 1260c
40,00 $
Теплоизоляционное одеяло из керамического волокна и шерсти
- Категория: >>>
- Поставщик: Rosewool Insulation Refractory Co. Ltd.Rosewool Ltd.
Сохранить в закладки 1600785670501:
Описание и отзывы
Характеристики
Product Description
Product Name | Nano heat shield nano insulation (silica aerogel) |
Material | silica aerogel |
Function | Thermal insulation |
Package | Packed by PE bag in roll |
Product introduction
In recent years, cement enterprises have higher and higher requirements for cooling and capacity expansion, energy saving and consumption reduction. According to the understanding of cement industry, there is still more room for improvement in the technical transformation of cement kiln firing system. In order to further improve the operation efficiency of cement thermal equipment, a better thermal insulation material is selected to reduce the shell temperature more without increasing or even thinning the insulation layer thickness. At the same time, it can expand the effective volume and reduce the heat loss, so as to reduce energy consumption, increase production efficiency and bring more economic benefits to the enterprise. Zhengzhou Shengshi Jinding thermal insulation refractory Co., Ltd. (hereinafter referred to as Shengshi Jinding) produces a new type of nano thermal insulation material. The material is a new product made by using special inorganic refractory nano powder and applying the latest nano technology. At high temperature, its heat insulation performance is better than traditional insulation materials.
The product forms are plate and brick, which can be provided with PE heat shrinkable film, aluminum foil and other external protective layer materials. Nano thermal insulation material is environmentally friendly, and its powder and reinforced fiber meet the environmental protection standards, and will not be harmed by being inhaled into the human body. It is a non-toxic environmental protection material.
The product forms are plate and brick, which can be provided with PE heat shrinkable film, aluminum foil and other external protective layer materials. Nano thermal insulation material is environmentally friendly, and its powder and reinforced fiber meet the environmental protection standards, and will not be harmed by being inhaled into the human body. It is a non-toxic environmental protection material.
Comparison of new nano thermal insulation board with calcium silicate board
The energy consumption of cement kiln firing system is relatively large. The original thermal insulation material is asbestos free calcium silicate board / ceramic fiber board, and its thermal conductivity is higher than that of nano materials, so the thermal insulation performance can not meet the increasingly stringent energy-saving requirements. Shengshi Jinding nano thermal insulation material is just a new material to meet the energy-saving requirements of cement kiln firing system.
Performance comparison between new nano thermal insulation materials and traditional thermal insulation materials
Nano thermal insulation material is a kind of nano microporous thermal insulation material produced by new nano technology and special technology. Compared with the calcium silicate board, the pores of nano thermal insulation materials are in the nano level, which makes its thermal conductivity far lower than that of traditional thermal insulation materials. Under the same conditions, the thermal insulation performance is 2-4 times better than the traditional.
Thermal insulation principle of nano thermal insulation board
There are three ways of heat transmission: conduction heat transfer, convection heat transfer and radiation heat transfer. The unique properties of nano thermal insulation materials come from their unique nano microporous structure.
After scientific and reasonable design, the nanoporous structure is optimized in the following three ways:
Conduction heat transfer:
After scientific and reasonable design, the nanoporous structure is optimized in the following three ways:
Conduction heat transfer:
The powder particles of nano thermal insulation materials are very small, the original particles are about 7 nm, and the contact area between solid particles is very small, which makes the effect of heat transfer through conduction very large, resulting in the effect of conduction heat transfer very low.
Convective heat transfer:
The diameter of micropores formed in the material is about 20 nm, while the free path of gas molecules in the material is about 60 nm at room temperature, In this way, each gas molecule is locked in a separate pore and can not collide with other gas molecules, so the convective heat transfer of gas molecules generated from this is also limited to the minimum value, and the internal convective heat transfer of nano thermal insulation materials can be almost ignored.
Radiation heat transfer:
The heat transfer effect of infrared radiation at high temperature is very great. The anti infrared fine powder with high temperature resistance is added inside the nano thermal insulation material. Such anti infrared additive causes the infrared ray to be blocked and reflected back to the place where the heat source occurs, so the infrared radiation heat transfer effect of the material is very small.
In summary, the application of the latest nanotechnology made of nano thermal insulation materials, its internal form of nano，The three ways of heat transfer have been changed fundamentally because of the microporous structure and additives，The lowest value should be reached under the effect of nano microporous structure, thus the nano microporous thermal insulation material with excellent thermal insulation performance is obtained.
Convective heat transfer:
The diameter of micropores formed in the material is about 20 nm, while the free path of gas molecules in the material is about 60 nm at room temperature, In this way, each gas molecule is locked in a separate pore and can not collide with other gas molecules, so the convective heat transfer of gas molecules generated from this is also limited to the minimum value, and the internal convective heat transfer of nano thermal insulation materials can be almost ignored.
Radiation heat transfer:
The heat transfer effect of infrared radiation at high temperature is very great. The anti infrared fine powder with high temperature resistance is added inside the nano thermal insulation material. Such anti infrared additive causes the infrared ray to be blocked and reflected back to the place where the heat source occurs, so the infrared radiation heat transfer effect of the material is very small.
In summary, the application of the latest nanotechnology made of nano thermal insulation materials, its internal form of nano，The three ways of heat transfer have been changed fundamentally because of the microporous structure and additives，The lowest value should be reached under the effect of nano microporous structure, thus the nano microporous thermal insulation material with excellent thermal insulation performance is obtained.
Application range of nano heat insulation board
JDN-I JDN-II is suitable for cyclone preheater, calciner, flue gas chamber, grate cooler, tertiary air duct, kiln head cover and other medium and high temperature parts, which can partially replace the traditional calcium silicate board. Jdn-h type is suitable for expansion of cement mill, calciner and preheater.
Product features:
1. Excellent thermal insulation performance, thermal conductivity is far lower than traditional materials, under the same conditions, the amount of calcium silicate board, ceramic fiber board is about half. The skill benefit is obvious. It can reduce the heat dissipation of equipment, reduce the energy consumption of thermal kiln and improve the production efficiency of kiln.
2. Meet the high standard design and use requirements, with high cost performance.
3. It is not easy to pulverize at high temperature and has good durability. The heat preservation performance does not decay and has better high temperature strength.
It is safe and hygienic. No asbestos, sulfur, chlorine and other toxic substances, environmentally friendly.
Product features:
1. Excellent thermal insulation performance, thermal conductivity is far lower than traditional materials, under the same conditions, the amount of calcium silicate board, ceramic fiber board is about half. The skill benefit is obvious. It can reduce the heat dissipation of equipment, reduce the energy consumption of thermal kiln and improve the production efficiency of kiln.
2. Meet the high standard design and use requirements, with high cost performance.
3. It is not easy to pulverize at high temperature and has good durability. The heat preservation performance does not decay and has better high temperature strength.
It is safe and hygienic. No asbestos, sulfur, chlorine and other toxic substances, environmentally friendly.
Suggestions on construction of nano thermal insulation board
Dry masonry is suitable for insulation layer of this material
1、 Inspection before masonry:
(1) Before masonry, the furnace shell and relevant accessories shall be installed and pass the process inspection.
(2) When the narrow part between the shell wall and the masonry is filled, the brick chips, mud and other sundries in the space must be completely removed.
2、 Masonry method:
(1) During the construction, the furnace shell or the front masonry should be taken as the guide surface for masonry. If there are obstacles, they should be processed.
(2) If there is no design requirement, staggered peak masonry shall be adopted except for the upper part of pipe lining, upper semicircle and conical lining of fixed cylinder equipment.
(3) When the castable is used, the width of the product should be equal to the distance between the anchors due to the presence of anchors. The construction method is basically the same as that of calcium silicate board. The difference is that the nano thermal insulation board can not let water in, so the waterproof plastic protective layer should be reserved in the construction. If the nano insulation board needs to be cut on site, glass transparent tape must be used to seal and waterproof the incision in time.
1、 Inspection before masonry:
(1) Before masonry, the furnace shell and relevant accessories shall be installed and pass the process inspection.
(2) When the narrow part between the shell wall and the masonry is filled, the brick chips, mud and other sundries in the space must be completely removed.
2、 Masonry method:
(1) During the construction, the furnace shell or the front masonry should be taken as the guide surface for masonry. If there are obstacles, they should be processed.
(2) If there is no design requirement, staggered peak masonry shall be adopted except for the upper part of pipe lining, upper semicircle and conical lining of fixed cylinder equipment.
(3) When the castable is used, the width of the product should be equal to the distance between the anchors due to the presence of anchors. The construction method is basically the same as that of calcium silicate board. The difference is that the nano thermal insulation board can not let water in, so the waterproof plastic protective layer should be reserved in the construction. If the nano insulation board needs to be cut on site, glass transparent tape must be used to seal and waterproof the incision in time.
Construction of tertiary air duct with nano insulation board
Construction drawing of grate cooler with nano heat insulation board
Physical and chemical indexes of nano thermal insulation board
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