gasfluidized
Gasfluidized, or gas-fluidized, describes a bed of solid particles that has been made to behave like a fluid by the upward flow of a gas through the bed. In a gas-fluidized bed, a gas such as air or another process gas is passed up through the particles at a superficial velocity sufficient to lift and suspend the solids. The resulting state enables rapid mixing, heat transfer, and gas–solid contact.
Principle and operation: When the superficial gas velocity reaches the minimum fluidization velocity (Umf), drag forces
Regimes and design considerations: Gas-fluidized beds exhibit several regimes depending on particle size, density, gas properties,
Applications: Gas-fluidized beds are widely used in chemical processing and energy systems. Applications include fluidized bed
Advantages and challenges: The approach provides high heat transfer coefficients, rapid mixing, and scalable reactor designs.