RESEARCH ON MIXING CHARACTERISTICS OF FILAMENTOUS BIOMASS PARTICLES IN ROTARY DRUM WITH STRAIGHT LIFTERS
A numerical simulation was conducted to investigate the flow mixing behavior of filamentous particles in a horizontal rotating drum based on the Discrete Element Method in this paper.The particle geometric model and the solid to solid collision model were established for the special structure of filamentous particles.The effects of drum rotation speed,number of lifters,and lifter height on the mixing quality of filamentous particle groups were investigated by using digital image analysis method.The results show that the dispersion of filamentous particle groups by lifters is the key to good particle mixing.Although the increase of the rotation speed or number of lifters contribute to the particle mixing quality,there is an upper limit to how much an increase rotation speed can help with mixing process.The simulation results indicate that the mixing quality of filamentous particles is negatively correlated with the height of the lifter,and the best mixing effect is achieved when the height of the board is 25 mm.
biomassrotary kilnsdiscrete element methodmixingnumerical simulation
万方数据
维普
