Flow Characteristics of Coal Ash in a Circulating Fluidized Bed

摘要: Solids flow characteristics of coal ash are investigated with the measurement local solids flux, concentration, and spatial distribution particle size. Two sets sampling probe used to quantify flux at different radial axial locations. The macroscopic structure is presented by analyzing profiles size distributions, while mesoscale illustrated on basis probability density function instantaneous intermittency index, cluster frequency. It found that both mesoscopic structures gas−solid from those commonly studied fluid catalytic cracking sand particles. differences include higher upward downward fluxes in lower dense region, significant segregation, more uniform annular flow. Furthermore, a semiempirical model taking into consideration ...