Introduction to Refractory Boiler Bed Material
Refractory boiler bed material is a high-performance granular material used in fluidized bed boilers, particularly in circulating fluidized bed (CFB) and bubbling fluidized bed (BFB) systems. It forms the foundation of the fluidized bed, supporting the efficient combustion of a variety of fuels, such as coal, lignite, biomass, and waste. This material is crucial for maintaining a stable fluidized state, promoting uniform heat distribution, and improving overall boiler efficiency.
Made from carefully selected refractory minerals (such as high-alumina bauxite, silica, and magnesite), boiler bed material can withstand extremely high operating temperatures, often exceeding 1400°C. It also resists thermal shock, chemical attack, and mechanical erosion caused by the turbulent combustion environment.
Characteristics of Refractory Boiler Bed Material
Ideal refractory bed material should have a controlled particle size distribution, a low alkali content, a high melting point, and strong resistance to clinker formation. These properties help prevent agglomeration, reduce unplanned downtime, and extend the service life of the boiler lining and internal components. It also ensures a stable bed temperature, which is crucial for consistent combustion and low emissions.
Applications of Refractory Boiler Bed Materials
Refractory boiler bed materials are widely used in power plants, the chemical industry, paper mills, and waste-to-energy plants. With their excellent thermal performance, chemical durability, and reliability under harsh conditions, they play a key role in the safe and efficient operation of modern fluidized bed boilers.
Kerui Refractory Materials offers a variety of refractory boiler bed materials. If you are interested, please contact us for a quote.
