干熄炉料钟布料焦炭粒度分布的研究  

Study on coke size distribution in bell-type charging in CDQ shaft

作　　者：刘志成[1] 冯妍卉[1] 张欣欣[1] 石中赢[1] 许明超[1] 徐列[2] 于振东[2] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]鞍山焦化耐火材料设计研究总院,辽宁鞍山114002

出　　处：《热科学与技术》2006年第3期251-256,共6页Journal of Thermal Science and Technology

摘　　要：对于干熄焦工艺,为了改善焦炭在干熄炉径向方向上的粒度偏析,采用料钟进行布料。采用实验和理论模拟相结合的分析方法,对布料焦炭在干熄炉预存段粒度偏析机理进行了研究。实验制作了冷态三维半圆料钟布料模型,考察了不同形状的料钟和不同的料线深度对焦炭粒度在干熄炉半径方向上分布的影响。所采用的理论模拟数学模型针对多尺度焦炭颗粒情况,用极少的参数来模拟半径平均尺度分布和每一种颗粒的半径堆积分布。研究结果表明,实验数据和数值分析结果吻合较好,相互验证了实验和理论模拟的正确性与可靠性。In order to improve the size distribution of charged coke in the radial direction of CDQ shaft, the fixed bell type coke distributing equipment was employed. In this paper, the mechanism of coke size segregation in the radial direction of pre-chamber in CDQ shaft was investigated by experiment and numerical analysis. Experimental apparatus was a cold three-dimensional semicircle model for bell-type charging, which was used to study the influences of different kinds of bells and different stock line levels on the distribution of coke size in the pre-chamber. Furthermore, a mathematical model was developed, which is capable of estimating the radial average size distribution as well as the radial deposit distribution of each particle size for multiple size coke with only a few fixed parameters. The calculated results agree well with the experimental data, which proves the reliability of both experimental study and numerical analysis.

关 键 词：干熄焦 粒度分布 料钟 偏析 布料 

分 类 号：TQ520.1[化学工程—煤化学工程]