With the development of modern large power plant boilers, the requirement for refractory material for boiler wall structures has changed greatly. The refractory materials of furnace walls are developed from traditional firebrick to refractory concrete, refractory castable, plastic refractory, refractory ramming material, smearing material, spray coating, and so on. With the development of refractory materials for large power generation equipment and boilers, the use of these materials has promoted the development of refractory materials for domestic boilers. castable refractory for the boiler. Power plant boiler due to different parts of the temperature and use requirements, a boiler has 610 kinds of refractories with different performance requirements.
Refractory Castables for All Kinds of Coal-Fired Boilers in Power Plants
The furnace type of coal-fired boiler in power plants is related to the coal type. At present domestic refractories can basically meet the needs of various boilers.
The liquid slag-discharging furnace and cyclone furnace are used for burning coal with low melting point ash. Because of the high temperature of the furnace, the refractory should have the characteristics of high-temperature resistance, wear resistance, thermal shock stability, high thermal conductivity, and slag resistance. Generally use silicon carbide ramming material.
The combustion of low-volatile coal generally adopts a “W” flame, and the furnace is equipped with a backburner belt. Adopt wear-resistant, high thermal conductivity, and good thermal shock stability of refractory materials. General selection of silicon carbide, chromium coating material, and high aluminum plastic.
The circulating fluidized bed boiler burns coal with low calorific value and high sulfur content. High ash concentration, high flow rate, and serious wear. General selection of corundum, silicon carbide wear-resistant, refractory castable.
The incinerator of the waste power plant is affected by the burning condition, and the refractory material is required to have fire resistance, volume stability, heat shock resistance, corrosion resistance, high strength, and wear resistance. Therefore, spray coating, castable, silicon carbide brick (board) is selected.
The selection of refractory materials for the boiler, refractory materials with good performance, remarkable effect, and reasonable price. Such as boiler tube furnace wall, furnace top, and flue equipment lining, promote the application of fast hard (micro expansion) refractory castable plastic. The double arch “W” flame furnace flame belt is made of high aluminophosphate combined with refractory plastic and silicon carbide coating. Circulating fluidized bed boiler and HR collection box selection of jade, silicon carbide castable, and plastic.
Strengthen the research and development of new refractories. For example, the development of high-temperature resistance, high strength, and wear resistance of the refractory coating, ramming, and spray coating without heat treatment. To simplify the process and improve the quality of the project. The lightweight castable with fibrous, expanded perlite, and vermiculite gradation was studied.
Refractory Castable Material for Circulating Fluidized Bed Boilers in Power Plants
In the fluidized bed boilers of the power plant, high temperature, high pressure, and erosion are very serious. It requires high-quality refractory castables, resulting in longer life and more efficient vulcanization furnaces in power plants. The specific type and performance requirements should be adjusted according to the actual situation of the boiler and should be used with a firebrick. Please contact Rongsheng Refractory for high-quality monolithic castable refractory for the power plant.
The following information about the use of refractory castables for circulating fluidized bed boilers in power plants is for reference only. Case by case analysis, Rongsheng refractory manufacturers, according to your actual work needs, for you to customize the formulation of amorphous refractory. Burner: refractory castable refractory 120mm +215mm +lightweight castable refractory. Top: Refractory castable, refractory plastic 48mm ~60mm. Manhole door: refractory castable and water-cooled wall flat. Test hole: refractory castable and water wall flat. Boiler roof: refractory insulation slips. Smoke Angle: The refractory castable is water-cooled wall flat. Burner wall: refractory tamping material, refractory plastic. Top of heat seal cover: 20 ~ 40mm aluminum silicate felt + 50 ~ 60mm refractory plastic.
Expansion joint of ceiling pipe: filled with aluminum silicate cotton. Non-thermal seal cover top: 20mm aluminum silicate felt +100mm refractory plastic. Furnace top and top tube: aluminum silicate cotton felt, aluminum silicate tube shell, or silicate composite insulation products. E Gas, water connection box, all kinds of pipe baffle: refractory castable. Sanitary belt: tamper. Slag funnel lining, which requires high strength and good thermal shock resistance. 900 ~ 1200℃, steel fiber high alumina refractory castable. High-temperature furnace smoke pipe lining: aluminum silicate cotton felt insulation layer, refractory layer water glass fast refractory plastic or steel fiber high aluminum cement castable.
Special castable for burner; Easy to burn parts: free roasting quick supplement, quick drying castable, outlet pipe, tube wall inner layer: expansion high aluminum castable, fast hard micro expansion plastic; Combustion chamber furnace: wear-resistant castable, slag resistant and wear-resistant castable, steel fiber reinforced castable, far infrared radiation coating, high temperature filling joint pressed into cement; Steering flue: wear-resistant castable; Cyclone separator: wear-resistant castable, corundum high strength wear-resistant castable; Coal nozzle.
Steel fiber reinforced castor refeeder: wear-resistant castable; Diaphragm wall: wear-resistant castable; Water-cooled chamber: wear-resistant castable; Ignition duct: wear-resistant castable; Furnace collection: wear-resistant castable in the furnace.
Rongsheng factory is a strong refractory manufacturer. Professional refractory technical team, environmental protection of automatic amorphous refractory production line. Specializing in the production of various castable refractory for boiler, such as lightweight castable refractory, refractory plastics, refractory ramming materials, high strength wear resistant refractory materials, etc. Please also contact the refractory castable manufacturer to compare RS Refractory Castable with Calderys castable. After all, you can shop around for affordable refractory products. If you also want to obtain better customer service, please choose the strength of Rongsheng refractory manufacturers, +86 185 3831 2977.