化工进展 ›› 2015, Vol. 34 ›› Issue (09): 3244-3247,3266.DOI: 10.16085/j.issn.1000-6613.2015.09.006

• 化工过程与装备 • 上一篇    下一篇

颗粒在圆形偏心滚筒内的运动模式

张立栋1, 李连好1, 程硕1, 李晓博1, 秦宏1, 王擎1, 李少华2   

  1. 1. 东北电力大学油页岩综合利用教育部工程研究中心, 吉林 吉林 132012;
    2. 中国大唐集团科学技术研究院有限公司, 北京 102206
  • 收稿日期:2015-01-29 修回日期:2015-02-25 出版日期:2015-09-05 发布日期:2015-09-05
  • 通讯作者: 张立栋(1980-),男,博士,副教授,主要研究方向为油页岩综合利用及回转装置混合与分离。E-mail:nedu1015@aliyun.com
  • 作者简介:张立栋(1980-),男,博士,副教授,主要研究方向为油页岩综合利用及回转装置混合与分离。E-mail:nedu1015@aliyun.com
  • 基金资助:

    长江学者和创新团队发展计划(IRT13052)、吉林省重大科技发展计划(20096034)、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。

Motion mode of particles in a circular eccentric drum

ZHANG Lidong1, LI Lianhao1, CHENG Shuo1, LI Xiaobo1, QIN Hong1, WANG Qing1, LI Shaohua2   

  1. 1. Engineering Research Centre of Ministry of Education for Comprehensive Utilization of Oil Shale, Northeast Dianli University, Jilin 132012, Jilin, China;
    2. Science and Technology Research Institute Co., Ltd., China Datang Corporation, Beijing 102206, China
  • Received:2015-01-29 Revised:2015-02-25 Online:2015-09-05 Published:2015-09-05

摘要: 实验研究了影响颗粒在圆形偏心滚筒内运动状态的因素,分析了2种偏心距、4种填充率和4种转速对运动模式的影响。结果表明:转速和填充率是影响颗粒在圆形偏心滚筒内运动模式变化的主要因素,偏心距对其基本没有影响;当转速为15r/min和25r/min时,填充率不会影响颗粒的运动模式;而在转速为5r/min时,颗粒运动模式随填充率由1/6增大到1/3,相应由阶梯模式变为滚动模式;在转速为40r/min时,颗粒运动模式随填充率由1/6增大到1/3,相应由滚动模式变为小瀑布模式;偏心距越大,颗粒在运动过程中产生的涡心越偏离滚筒中心;转速的增加使颗粒群的上表面和下落层两端的弧度发生变化;填充率对颗粒在圆形偏心滚筒中的运动模式的影响只发生在低转速和高转速下。

关键词: 颗粒, 圆形偏心滚筒, 运动模式

Abstract: Experiments were conducted to study the factors which affect motion state of particles in a circular eccentric drum,and the effects of two offsets,four filling rates and four rotating speeds on the motion model were analyzed. Rotating speed and filling rate were the main factors affecting the change of the motion model of particles in a circular eccentric drum,while offset had no effect. Filling rate did not have an impact on the motion model of particles at rotating speed of 15r/min and 25r/min. But when rotating speed was 5r/min,the motion model of particles varied from slumping mode to rolling mode accordingly when filling rate increased from 1/6 to 1/3,and when rotating speed was 40r/min,the motion model of particles varied from rolling mode to cascading mode accordingly when filling rate increased from 1/6 to 1/3. With increasing offset,vortex core generated in the process of movement deviated more from the center of the drum. Increasing rotating speed resulted in the change of the upper surface of particle group and the arc of the falling particle group on both ends. The effect of filling rate on the motion model of particles occurred only at low and high rotating speeds.

Key words: particle, circular eccentric drum, motion model

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