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Properties and Applications of ceramic fiber products, the rapid development of oil refining and chemical and metallurgical industries, is widely used in these two industries for refractory proposed new requirements, ceramic fiber with its low thermal conductivity, high tensile strength, heavy firing shrinkage, low density, low heat storage, heat insulation and other features of the various types of industrial furnace lining has been more widely Applications for oil refining and chemical industry, heating furnace temperature is relatively high, the maximum capacity of 1350 ℃. In the ceramic fiber material has not been previously approved design and the owners, the conventional design of the furnace walls and roof of the working surface is substantially the severity of refractory castable, lightweight insulation bricks and other materials, the thickness of the lining layer is generally higher than the 300mm following major drawback: the total amount of refractories used not only bulky and too heavy, a total of about the whole furnace refractories 600T above, to the furnace materials procurement and on-site construction brought great difficulty; the furnace walls and roof tiles hanging anchor very inconvenient, not easy leveling; castable construction process requires on-site support template leaving in expansion joints, long construction period; need to follow the material itself characteristic curve ovens, steel usage is relatively large, and the furnace heating and cooling speed restrictions, etc. In summary, the traditional way of high-temperature furnace masonry many defects must. to improve and perfect. Practice shows that in order to replace the traditional heavy ceramic fiber refractory materials for high temperature furnace wall lining, its prospects are very bright ceramic fibers as a fibrous material energy efficient, according to its use at different temperatures can be divided into the following categories: common type (950 ℃), Standard (1000 ℃), high-purity type (1100 ℃), high-alumina type (1200 ℃), aluminum zirconium type (1250 ℃), zirconium-containing (1300-1350 ℃) and polycrystalline mullite type (about 1350-1400 ℃) and other species. The ceramic fiber products form can be divided into cotton, blankets, carpets, plates, paper, cloth, tape, rope, modules, fiber and fabric spray paint and other forms of castable ceramic fiber is a gradient using a variety of different temperature and furnace atmosphere for adaptability and other characteristics of the products, high-temperature furnace for use in different parts of different grades of ceramic fiber products provide a number of selection, design and construction of high-temperature furnace so that the whole fiber lining structure made possible by the estimates indicate that the cost of using ceramic fiber furnace in a slight decrease compared with traditional heavy refractory costs. This further promote the use of high-temperature furnace Ceramic fiber has opened up a vast world. Many use Design Institute, Shandong Luyang AG produced several sets of high temperature ceramic fiber furnace practice in this regard have been made, and achieved significant energy savings. Construction method using ceramic fiber products generally are the following ways: a layup, modular type, veneer type, fiber coating type, style and other kinds of fiber castable. Shop type refractory fiber lining layer (1) structural characteristics: type of lining layer is laid ceramic fiber blankets, carpets, plates or other products in accordance with the requirements of the laying of the final thickness of the anchors to be used in the furnace wall plate fixation of an all-fiber Lining Structure way. This class is the first application of the lining, the most traditional kind of wall lining structure, its structural features roughly summarized as follows: A. You can select from different materials, the bulk density of the ceramic fiber insulation products composed of economic structure based on layers of operating temperature. B. fiber direction parallel to the direction of heat transfer and the furnace wall, the wall lining good insulation properties, can reduce heat loss wall lining. C. fiber lining the walls with large-sized ceramic fiber blanket (or felt) for the construction, only construction speed, and less furnace wall joints, improve shop floor wall lining insulation performance and energy efficiency. (2) designed for use in Attention:. A. layup type fiber wall lining anchors directly exposed to the hot surface of the furnace wall, although you can use heat-resistant steel or ceramic anchors quality, but it still limits kinds of fiber wall lining of the use of temperature. Generally only suitable for temperatures below 1000 ℃. B. prone to peeling layer layered blanket laying fiber wall lining erosion robust performance, general furnace air speed over 10m / s. C. completely when the layers were laid fiber blanket, anti-erosion performance is poor, using the plate / blanket composite wall structure after lining can improve the performance of anti-erosion. D. Because anchors directly exposed to the work of the hot surface, heat-resistant alloy steel anchors using lower temperatures for high temperature, the anchors are easily damaged, and the use of ceramic anchors, anchor due to brittle ceramic thermal shock resistance poor, can not long-term use, need frequent replacement, at the same time, compared to ceramic and stainless steel anchors anchors, the price is relatively high. Therefore, laying ceremony fiber lining layer can be applied to 1000 ℃ below the furnace wall lining, such as crude oil distillation, hydrogenation. However, due to the structural characteristics of the limitations of the shop floor, so the furnace application is relatively less, but in terms of pipe insulation can flourish. In addition, how to find both high temperature, high strength, good thermal stability, excellent thermal shock resistance of the anchor is an effective way to broaden the shop floor type fiber lining applications. Modular fiber lining: modular structure of the lining is a ceramic fiber blanket folded into a certain width organ like fiber module, and then the fibers collapse block to be a certain amount of compression, and to be tied up in a compressed state, while embedded anchor ( Some are not embedded directly fixed at the construction site) consisting of fiber module, then connect the fixed structure of a fibrous wall lined with a variety of forms in the furnace shell plate welded metal anchors. The advantages of the modular structure of the fiber wall lining is: A. the construction is simple, easy to install, save time, the fiber wall repair, no large-scale demolition, simply replace the damaged parts of the fiber module can quickly resume production. B. fibers in the processing module, taken pre-compression, to compensate for shrinkage of the component at high temperatures, not only reduces the amount of heat shrinkage fiber wall lining, at the same time, the same conditions than traditional layup formula wall lining can be increased by using a temperature of 50 ℃ . C. has excellent resistance to weathering performance, the traditional shop-type fiber lining layer below 900 ℃ anti-erosion performance of up to 10m / s, while the modular fiber lining allows the anti-erosion performance of up to 30 m / s. D. anchor fiber module is not exposed to the fiber wall lining hot face, without using an expensive heat-resistant alloys, and nitrides and other ceramic materials for the anchor, saving investment while reducing heat transfer, but also to extend the use of anchor lifetime. Because of this structure has many advantages, so the application in the petrochemical industry, ethylene cracking furnace, reformer, hydrogen furnace, furnace and more widely. Veneer type fiber lining: (1) The structure and characteristics: veneer type fiber lining is made of fibers with fiber blanket strip bundle, and then through the high temperature in the furnace wall adhesive paste to get a good fire-resistant insulation lining structure. Its advantages are: A. combined use with other refractory materials, can significantly enhance the insulation effect. B. can arbitrarily select the relevant parts of the furnace construction, to facilitate construction. C. has chosen to use, can greatly reduce the cost. Designed for use in question should be noted: A. plate combined with a lack of both a solid, mature and high temperature, ideal binder, appeared after the existing adhesive paste veneer components in use off phenomenon. B. veneer lining maximum thickness of only 50mm, small thickness, can not be used alone as a lining, can only be used with other lined composite. C. fiber veneer strips assembly poor flexibility, between two adjacent components of the weak ability to compensate. Outside of the structure present in the petrochemical ethylene cracker furnace only individual applications, such as high-temperature furnace crystal fiber veneer blocks to enhance high temperature performance fiber materials, other grades of veneer blocks petrochemical furnace application is not a lot. Fiber spraying wall lining: (1) The structure and characteristics: ceramic fiber spray paint, low shot content is blowing ceramic fiber as raw material, adding an organic binder and inorganic binder preparation. And through a dedicated sprayer construction, obtain a ceramic fiber coating fibers lining the walls. Determine specific spraying ceramic fiber spraying wall lining has the following characteristics: A. convenient construction, rapid, seamless furnace wall, good integrity, there is no heat loss between the furnace Bifeng problem. Eli furnace life and improve energy savings. B. Not only the rules of the furnace wall, is particularly suitable for the construction of the furnace wall profiled. C. wall lining for embedded anchor structure, reducing the anchor corrosion, oxidation and thermal short-circuit problem. Spray the wall lining thickness unrestricted. Spraying fiber lining the walls with excellent heat insulation, anti-erosion and thermal shock resistance. (2) designed for use in Attention:. A. part manufacturers sprayed with adhesive quality is not ideal, at room temperature and high temperature bonding capacity is not strong, leading to the collapse of the phenomenon have high temperatures when spraying lining. B. Spray adhesive containing CL-, stainless steel furnace wall will produce stress corrosion, could easily lead to mass incidents wall lining, which is in the design should pay attention to, and to take certain measures to protect metal parts. C. construction is completed, the need for conservation and rational ovens. D. Construction of certain requirements under the environmental conditions, can not be construction in the following 0 ℃. E. Because the fiber wall lining spray contained anchor too close to the hot face away from work (usually 30-50mm), the anchor location high temperature, therefore, the anchor pieces of material and high temperature performance requirements are very high, and Meanwhile, since the required anchor coating liner in larger quantities, larger anchor heat transfer, resulting in poor insulation lining performance, high temperature furnace wall outer wall. So, generally considered spraying fiber wall lining is only suitable for low temperature furnace wall lining. Fiber plastic liner can be: (1) The structure and characteristics: fire-resistant plastic fibers are high-quality, low shot content of blowing fiber aggregate, adding fillers, binders and additives prepared from, and has the following Features: A. low density, low thermal conductivity, excellent high temperature strength; B. Good plasticity, suitable for construction by casting method, and to facilitate the rapid construction. Especially for the shape, structure of complex ceramic wall lining construction easier. Wall lining integrity and good air tightness. Lining local damage, can be easily repaired, saving maintenance time and prolong life. C. good pressure, bending performance, it has excellent resistance to weathering, abrasion resistance, shock and vibration performance and a certain load-bearing capacity. D. ceramic fiber wall lining after pouring 3-6 hour release, and has a certain strength. E. on the furnace atmosphere adaptability of various fuels used as furnace wall material. Within a controlled atmosphere furnace use, the more stable amorphous ceramic fiber products. (2) the design and use should pay attention to the issue;. A. construction process, after adding coagulant can plastic, coagulation time to be accurately controlled, otherwise it will cause inconvenience during construction. C. Conservation and Ovens system required to be strictly implemented. D. Whether state supply dry, wet or supplier, are required to stir the construction site, the construction site must be equipped with mixing equipment. The fiber castable own performance characteristics, fiber castable structure now used for wall lining hearth furnace, furnace parts and convection wall shaped room. Not difficult to see from the above, the ceramic fibers have different temperature grades, different forms of the product, with a variety of different structures lining the walls and construction methods can be selected for different furnace characteristics, so fiber applications in the field of fire-resistant insulation has the formation of scale, function, series, widely used in various industries. Ceramic fiber applications advantages in high temperature furnace (1). To facilitate construction. All-fiber structure of the high temperature furnace, the furnace wall thickness can be reduced, so that the length of the roof beam, furnace width, area reduction furnace, but also because the use of a low bulk density fiber lining the entire furnace greatly reduces the total load, foundation excavation depth decreases, can greatly shorten the construction period. In addition, the entire fiber wall lining furnace maintenance is simple, rapid, low maintenance workload, can reduce maintenance costs, and reduce the maintenance cycle, increase the rate of the furnace operation. (2) Technical and reliable. Ceramic fiber wall lining structure, design and construction process, without regard to expansion joints problems (since leaving in the expansion joints is one of the high temperature furnace design must pay attention to the problem), can greatly reduce the difficulty of design and construction, design and construction to make more perfect reliable. (3). Conserve energy. After completion of construction does not require the use of short-term oven or oven (oven spray for the use of it), you can save some fuel and Ovens costs, while using the fiber wall lining structure, reduce the oven heat storage loss of about 30% , so you can save a lot of energy and greatly reduce the cost, thereby enhancing their market competitiveness. Analysis and practical application of various studies show that the ceramic fiber used in the petrochemical furnace will be more extensive, promotion and use of ceramic fiber has become a trend in the field of fire-resistant insulation. Aluminosilicate refractory fiber lining technical performance advantages of aluminosilicate refractory fiber lining as a lightweight, highly efficient thermal insulation lining, compared with conventional refractory lining, has the following technical performance advantages: 1. Low density: Silicate folding aluminum refractory fiber module lining lightweight insulation tiles lining lighter than 75% lighter than the lightweight castable lining `90 percent to 95 percent. Can greatly reduce the load of steel furnaces and prolong the life of the furnace. 2. low heat capacity: heat capacity of the lining material is generally proportional to the weight of the lining of the heat in the furnace heat capacity means less reciprocating operation absorbed while warming faster. Heat capacity aluminosilicate refractory fibers only lightweight thermal lining and light clay ceramic tiles 1/9, greatly reducing the furnace operation control of energy consumption, especially for intermittent operation of the furnace can play very significant energy savings. 3. Low thermal conductivity: aluminosilicate refractory fiber material at an average temperature of 400 ℃, the thermal conductivity of less than 0.12W / mk, an average of 600 ℃, less than 0.22 W / mk, 1000 ℃, the average is less than 0.28 W / mk. Lightweight clay about 1/8, 1/10 for lightweight thermal lining, insulation effect is significant. 4. The construction is simple, without leaving in the expansion joints, construction workers through basic training to employment, small construction technology factors affecting the lining insulation effect. 5. Use a wide range: With the development of aluminosilicate refractory fiber production and application of technology, aluminosilicate refractory fiber products have achieved the series and features, the product from the use of temperature to meet from 1400 ℃ to 600 ℃ different temperature grade requirements. From the form has evolved from the traditional cotton, blankets, carpets fiber module products to a variety of forms, plates, shaped pieces of paper, textile fibers and other secondary processing or deep processing products. Fully meet the various industries in different industrial furnaces for ceramic products, ceramic fiber requirements. 6. Thermal Shock: fiber folding module for extreme temperature fluctuations have a particularly good resistance properties, under the premise of being able to withstand the heating element, the fiber module lining can be folded in any fast heating or cooling. 7. resistance to mechanical shock: fiber blanket or mat with a flexible and resilient, but not damaged, the whole furnace installed at the time by the impact or vibration easily damaged by road transport. 8. without oven; without oven program (such as: conservation, drying, baking, oven complex processes and safeguards cold weather), lining construction is completed can be put to use. 9. noise performance: aluminosilicate refractory fiber can reduce the frequency of less than 1000 Hz frequency noise, the sound waves less than 300HZ, acoustic insulation capacity than commonly used materials, can significantly reduce noise pollution. 10. aluminosilicate refractory fiber lining in high heat-sensitive, can adapt to the furnace automation control. 11. chemically stable aluminosilicate refractory fiber lining, in addition to phosphoric acid, hydrofluoric acid and alkali, the other acid, alkali and water, oil, steam, not eroded, and lead, aluminum, copper and not invasive. Aluminosilicate refractory fibers form the main products, technical characteristics and uses of the product morphology Table 2 main technical characteristics of the product use bulk aluminosilicate refractory fiber cotton 1. aluminosilicate refractory fiber textile cotton 2. aluminosilicate refractory fibers for paper 3. aluminosilicate refractory fiber cotton spray paint, casting material, plastic filling materials and backing cotton fiber cotton fiber diameter ≥4.5μm 4. industrial furnaces; fiber length> 120mm; shot content ≤8%; non-fibrous substance content ≤30 spinning rate of 60%. Fiber diameter 2-2.5μm; fiber length ≤30mm; shot content <10%; fiber diameter ≤3μm; fiber length ≤50mm; shot content 100mm; shot content of 98%; elastic products, flexible texture. Product size: 1200 × 610 × 20-50mm industrial furnaces, heating equipment lining backing insulation; refrigeration equipment insulation; house building insulation, sound-absorbing materials. Aluminosilicate refractory bulk density fiberboard 250,280,320 Kg / m3; compressive strength (thickness compression 10%) 0.5Mpa; flexural strength ≥0.5Mpa; anti-erosion ability ≥25m / s; excellent machining performance, the product has precise geometry. Industrial furnace wall lining materials, especially applicable to the erosion of the lining material gas furnace; industrial furnace to see the fire-hole bricks, tiles and put silk sleeves; kiln different temperature zones separated by fire-bulkhead; substituted microporous silicate Calcium plate for high temperature industrial furnace furnace wall insulation backing, and solved using calcium silicate boards exist brittle, fragile, damaged high construction, construction and poor performance can not be used by water erosion and other problems . Aluminosilicate refractory fiber paper bulk density 180-240 Kg / m3; Product Dimensions: Length 20-40m, width 610-1220mm, thickness of 0.5-6.3mm industrial insulation refractories, high-temperature and high-temperature gasket protective insulation; electricity heating elements, electric heating devices and equipment for electrical insulation and thermal insulation materials; aluminosilicate refractory castable bulk density fiber 0.55-1.0g / cm3; plus hotline shrinkage ≤2.0%; compressive strength after drying 0.6-0.7Mpa the overall average temperature of 700 ℃, the bulk density of 0.8g / cm3 thermal conductivity of 0.24W / mk industrial furnace high temperature industrial furnace wall lining or backing layer of insulation;; flexural strength after drying 0.5Mpa; anti-erosion ability ≥30m / s casting; the whole cast ladle cover; the door, watching the fire hole brick, see the fire doors and other P-type, shaped preformed parts, aluminum castable refractory fibers with anti-erosion, abrasion, shock vibration, excellent performance, and adaptability for the furnace atmosphere. For this purpose can be used in higher charge air erosion site, used in a controlled atmosphere, with good stability. Aluminosilicate refractory castable fiber wall lining integrity, air tightness, partial damage to the lining, can be easily repaired, saving maintenance time and prolong life. Aluminosilicate refractory fiber spray paint bulk density 220-250Kg / m3; compressive strength after drying under 20m / s condition is used as lining insulation. Aluminosilicate refractory fiber cloth, with a bulk density of 500 Kg / m3; organic matter content of 12%; Product Dimensions: length 30m, width 1m, thickness 2,3mm (cloth) length 30m, width 50,75,100mm, thickness 2,3mm (with) insulation, insulation materials; high temperature structural materials or flexible sealing gasket; hot dressings; high temperature filter material; fireproof material; door curtain, temperature separator material. Aluminosilicate refractory fiber rope, packing bulk density of 500 Kg / m3; organic matter content of 12%; product specifications φ8-32mm different temperatures testimony fillers such as high temperature expansion joints; high temperature packing; temperature bundled material; replace asbestos products used as pipe packing.