化工进展2017，Vol.36Issue(11)：3993-3999,7.DOI:10.16085/j.issn.1000-6613.2017-0333
柱状生物质颗粒在回转干馏炉中的运动及导热特性
Motion and heat conduction in rotary retorting filled with cylindrical biomass particles
摘要
Abstract
In order to understand the characteristics of motion and heat conduction of biomass particles and solid thermal carriers(steel particles) in rotary retorting,the motion and heat conduction of biomass particles and steel particles in rotary retorting were simulated using discrete element methods. The effect of the rotational speed and quantity of biomass particles on particle motion and heat conduction was analyzed. The distribution of particles in the rotary retorting was investigated. The mean temperature of biomass particles and the temperature standard deviation of biomass particles were used to evaluate the heating rate of steel particles and the uniformity of biomass particles'temperature. The result showed that particles in the rotary retorting was divided into three regions: the monolayer steel particles region in the left of the particles region,the mixing region of biomass particles and steel particles in the middle of the particles region,and the accumulating region of biomass particles in the right of the particles region. The unstable factors(unstable regions,unstable lines and unstable holes)led to the periodic collapse of the monolayer steel particles region. The motion mode was slumping in all six situations. With the increasing of rotational speed,the heating rate of steel particles was increased.When the rotational speed was 15r/min,the uniformity of biomass particles'temperature was worst in the first 20s comparing to the rotational speed of 5r/min and 25r/min.关键词
柱状生物质颗粒/离散单元法/运动/导热Key words
cylindrical biomass particles/discrete element method/motion/heat conduction分类
化学化工引用本文复制引用
张立栋,韦庆文,秦宏,王擎..柱状生物质颗粒在回转干馏炉中的运动及导热特性[J].化工进展,2017,36(11):3993-3999,7.基金项目
教育部长江学者和创新团队发展计划(IRT13052)、吉林省自然科学基金(20150101033JC)、吉林市科技计划(201464044)及吉教科合字(2015-237)项目. （IRT13052）
