回转装置内三组元颗粒径向混合评价方法分析

化工进展

回转装置内三组元颗粒径向混合评价方法分析

李少华1，朱明亮2，张立栋2，王擎2，刘朝青2，于丁一2

1中国大唐科学技术研究院，北京 100032；2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

出版日期:2013-06-05 发布日期:2013-06-05

Analysis of three-component radial mixing evaluation methods in rotary retorting

LI Shaohua1，ZHU Mingliang2，ZHANG Lidong2，WANG Qing 2，LIU Chaoqing2，YU Dingyi2

1China Datang Corporation Science and Technology Research Institute，China Datang Corporation，Beijing 100032，China；2Engineering Research Centre of Ministry of Education for Comprehensive Utilization of Oil Shale，Northeast Dianli University，Jilin 132012，Jilin，China

Online:2013-06-05 Published:2013-06-05

摘要/Abstract

摘要： 简介了各种混合度评价方法，对3种较常用混合度评价方法——变异系数、接触数及Lacey指数的应用范围进行了分析，其中Lacey指数适合评价径向颗粒混合。以回转装置内三组元颗粒径向混合实验为背景，讨论取样方式对Lacey指数算法的影响。研究表明：取样方式引起混合度数值变化的根本原因在于不同样本内大小颗粒比例不同，进而引起S2数值发生变化。本文通过分析，获得了最佳取样方式为：样本边长尺寸比颗粒最佳混合时横向尺寸略大，本实验最佳取样为6×6取样方式，即边长尺寸为14 mm。

关键词: 三组元颗粒, 径向颗粒混合, 混合度, Lacey指数

Abstract: This paper introduced the evaluation methods of mixing and analyzed the applied range of three common evaluation methods，including coefficient of variation，contact number，and Lacey index. Lacey index is suitable for evaluating radial mixing of particle. This paper also discussed the effects of sampling towards Lacey index under the condition of three-component radial mixing experiments. The results showed that the main reason of the mixing change is the different particle sizes in different samples，resulting in S2 number change. The results revealed the optimum sampling of 6×6 with the side length size of 14 mm，slightly longer than lateral dimensions.

Key words: three-component particles, radial mixing, mixing degree, number of Lacey

李少华1，朱明亮2，张立栋2，王擎2，刘朝青2，于丁一2. 回转装置内三组元颗粒径向混合评价方法分析[J]. 化工进展.

LI Shaohua1，ZHU Mingliang2，ZHANG Lidong2，WANG Qing 2，LIU Chaoqing2，YU Dingyi2. Analysis of three-component radial mixing evaluation methods in rotary retorting[J]. Chemical Industry and Engineering Progree.