biomass circulating fluidized bed boiler cycle rate
Fluidized Bed Boiler - an overview | ScienceDirect Topics
The circulating fluidized bed (CFB) boiler (see Figure 8) takes the principle of the bubbling bed one step further and with increased fluidization velocity the particles are lifted out of the bed and follow the gas out of the combustion chamber. They are then separated from the gas in a cyclone or beam separator and returned to the bed.
Jan 11 2021 · The temperature of normal boiler furnace is as high as 1400-1500°C during combustion while that of circulating fluidized bed boiler furnace is within a lower temperature range of 800-900°C which reduces the production of nitrogen oxides (NOx); meanwhile by adding low-cost limestone to circulating fluidized bed boiler sulfide (SOx) can be ...
The circulating fluidized bed gasifier has the following features: fast fluidization which enhances the heat and mass transfer so as to speed up the gasification process; and the circulation of the char which increases the residence time of char so as to satisfy the need