NUMERICAL SIMULATION OF SLUDGE DRYNESS UNDER FLUE GAS ATMOSPHERE IN THE RISER OF A FLUIDIZED BED
A numerical algorithm is developed for a detailed 3D simulation of the gas/particle flow behavior used for drying of sludge under flue gas atmosphere in the riser section of a circulating fluidized bed. The gas phase is described with standard κ-εturbulence model, whereas a Lagrangian formulation with a stochastic particle dispersion model is adopted for the particulate phase. Conservation equations of mass and momentum for each phase were solved using the volume numerical technique. Fluid-particle interaction is taken into account to calculate the mass, momentum, and heat transfer between phases. The numerical algorithm is used to predict the circulating fluidized bed performance under various inlet profiles of the flue gas velocity. Gas and particle flow profiles were obtained for velocity and temperature parameters for each phase. The influence of the flue gas inlet velocity and the sludge mass flow rate on drying is discussed.
sludge flue gas drying numerical simulation
H.M.Xiao X.Q.Ma K.Liu Z.S.Yu
School of Electric Power, South China University of Technology, 381 Wushan Road,Guangzhou, 510641, C School of Electric Power, South China University of Technology, 381 Wushan Road, Guangzhou, 510641,
国际会议
第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)
西安
英文
812-816
2009-05-18（万方平台首次上网日期，不代表论文的发表时间）