A fluidized bed is a state of a two-phase mixture of particulate solid material and fluid, which is widely used in many modern technologies for efficient implementation of various physical and chemical processes. The tumbling action, much like a bubbling fluid, provides more effective chemical reactions and heat transfer. Fluidized-bed combustion evolved from efforts to find a combustion process able to control pollutant emissions without external emission controls (such as scrubbers). Fluidized beds are known for their high heat and mass transfer coefficients, due to the high surface area-to-volume ratio of fine particles. Fluidized beds are used in a wide variety of industrial processes such reaction, drying, mixing, granulation, coating, heating and cooling.
Fluidized-bed boilers are the most common type of boilers recommended for biomass fuel. The fuel is suspended by an upward flow of combustion air through a bed of hot, inert particles, allowing oxygen to reach the combustible material more readily. Outotec fluidized bed technology is versatile allowing the reaction parameters to be optimized for a range of applications in minerals & metals processing. Fluidized bed definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!
Metso provides stand alone fluid bed equipment or complete systems. Metso’s fluid bed technology utilizes a bubbling bed, partial entrainment, and full entrainment technologies to heat, dry, calcine, and cool various granular materials. In this work we have tested the fluidized bed desulfurization performance of lime particles obtained by means of a limestone slow calcination pre-treatment tech. Fluidized-bed technology offers the advantage of reduced NOx and SO2 emissions by allowing the control of bed temperature and using reagents such as limestone as bed material.
Fluidized Bed Combustors For Biomass Boilers
Circulating Fluidized Bed combustion has given boiler and power plant operators a greater flexibility in burning a wide range of coal and other fuels. All this without compromising efficiency and with reduced pollution.