纤丝状生物质颗粒在抄板滚筒内混合特性研究  

RESEARCH ON MIXING CHARACTERISTICS OF FILAMENTOUS BIOMASS PARTICLES IN ROTARY DRUM WITH STRAIGHT LIFTERS

作　　者：顾丛汇 刘源 赵海超 袁竹林[2] Gu Conghui;Liu Yuan;Zhao Haichao;Yuan Zhuin(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212100,China;School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]江苏科技大学能源与动力学院,镇江212100 [2]东南大学能源与环境学院,南京210096

出　　处：《太阳能学报》2024年第10期655-662,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51906092)。

摘　　要：基于离散单元法对抄板滚筒内纤丝状生物质的运动与混合特性展开研究。针对纤丝状生物质颗粒的特殊结构构建颗粒几何模型和固-固碰撞模型,探究滚筒转速、抄板数量和抄板高度对纤丝状颗粒群混合质量的影响。研究发现,滚筒抄板对纤丝状颗粒群的抛撒作用是颗粒混合良好的关键。提高滚筒转速可促进颗粒混合,但转速的增大对混合的帮助存在上限,转速为10 r/min时混合质量最高;纤丝状生物质颗粒的混合质量与抄板高度密切相关,抄板高度h=25 mm时混合效果最佳。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.

关 键 词：生物质 滚筒 离散单元法 混合 数值模拟 

分 类 号：TQ027.1[化学工程]