【作者】 陈路敏； 钱付平； 袁轲； 朱景晶； 郑志敏； 韩云龙； 鲁进利；

【Author】 Lumin Chen;Fuping Qian;Ke Yuan;Jingjing Zhu;Zhimin Zheng;Yunlong Han;Jinli Lu;School of Energy and Environment, Anhui University of Technology;School of Civil Engineering and Architecture, Anhui University of Technology;

【机构】 安徽工业大学能源与环境学院； 安徽工业大学建筑工程学院；

【摘要】 充分认识湿粉尘的沉积特性是深入研究清灰机理的关键。本文使用离散元方法(DEM仿真)结合堆积角标定研究颗粒参数及出口速度、直径和距滤料高度对滤料上颗粒沉积特性影响。结果表明:相同体积下异型颗粒在滤料上沉积率基本相同,因此煤粉的实际形状简化成异型颗粒进行仿真更真实;当颗粒出口速度为0.1 m/s时,出口半径及高度对滤料表面异型颗粒沉积个数影响较大,偏离出口严重,而其它出口速度影响较小;此外,异型颗粒粒径增加导致滤料表面颗粒沉积个数减少,且粒径越大分布越分散。更多还原

【Abstract】 Fully understanding the deposition characteristics of wet dust is the key to in-depth study of the mechanism of dust removal. This paper used the discrete element method(DEM simulation) combined with the calibration of stacking angle to study the influence of particle parameters and outlet velocity, diameter and height from the filter material on the particle deposition characteristics on the filter material. The results show that the deposition rate of the special-shaped particles on the filter material under the same volume is basically the same, so the actual shape of the coal powder is simplified to the specialshaped particles to simulate more realistically; when the particle outlet velocity is 0.1 m/s, the outlet radius and height affect the filter material. The number of surface particles deposited on the surface has a greater impact, the deviation from the outlet is serious, and the impact of other exit speeds is small; in addition, the increase in the particle size of the irregular particles leads to a decrease in the number of particles deposited on the surface of the filter material, and the larger the particle size, the more dispersed the distribution.更多还原