化工进展2017，Vol.36Issue(12)：4363-4370,8.DOI:10.16085/j.issn.1000-6613.2017-0620
滚筒内柱体内构件对二元颗粒体系混合的影响
Effects of column internals on mixing of the binary particle system in a rotating horizontal drum
摘要
Abstract
Accounting for the phenomenon of mixed dead zone in mixing process of binary granular systems,column internals wee set in the horizontal drum to augment mixing. The contact number was taken as a particle mixing indicator. The discrete element method was employed to study mixing of the binary particles with the column internals. The mechanisms of augmenting mixing of the column internals were discussed in this paper. The results showed that the column internals can destroy the mixed dead zone of the aggregated particles. When the components are set in the drum,the mechanisms of convection and diffusion are enhanced,and the segregation of the binary particles is suppressed. Moreover,the column internals can improve the mixing efficiency and change the stability of mixing. It was noted that the mixing effect of binary particles improves with the increase of the number of cylinder components in the drum in a certain range,and excessive number of internals are unfavorable for mixing. The column internals inhibit mixing of particle system when the drum starts to rotate,and the internals achieve the purpose of augment mixing after a period of movement. The results can provide theoretical guidance for equipment improvement of particle material in the industry of the augmenting mixing.关键词
二元颗粒/离散单元法/柱体内构件/混合死区/增混Key words
binary granular systems/discrete element method/column internal/mixed dead zone/augmenting mixing分类
化学化工引用本文复制引用
张立栋,程硕,李连好,李少华,王擎..滚筒内柱体内构件对二元颗粒体系混合的影响[J].化工进展,2017,36(12):4363-4370,8.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）
