粒煤在补气料仓中下料稳定性研究  

Research on the Discharge Stability of Granular Coal From an Aeration Silo

作　　者：陈汝超[1] 陈晓平[1] 蔡佳莹[1] 张铁男[1] 梁财[1] 

机构地区：[1]东南大学能源与环境学院,江苏省南京市210096

出　　处：《中国电机工程学报》2012年第5期33-38,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50906011);国家重点基础研究发展规划项目(973计划)(2010CB227002)~~

摘　　要：在自行设计的有机玻璃补气料仓系统上对粒煤的下料稳定性进行实验研究。结果表明：补气位置、补气量、料仓结构和物料特性对粒煤在补气料仓中的下料稳定性有显著影响。补气位置不当或补气量较大会使粒煤下料过程中出现煤层顶部鼓泡、气压平衡拱及下料口附近粒煤节涌等现象,致使粒煤下料稳定性降低。粒煤在补气料仓中的下料稳定性随着料仓出口直径的增大而减弱。粒煤的平均粒径越大,下料稳定性越强。在0~8%的外水分范围内,外水分含量越高,粒煤下料稳定性越强。The discharge stability of granular coal from an aeration plexiglass silo was investigated.The results show that position of flexible air,the amount of flexible air,silo structure and material characteristics has significant effects on discharge stability of granular coal from aeration silo.Bubbling phenomenon at the top of coal seam,gas balanced arch and slugging phenomenon of granular coal near the silo outlet would be easily formed if the flexible air position is unsuitable or the amount of flexible air is too large,which make the discharge stability descends.Increasing the outlet diameter of aeration silo would improve the discharge stability of granular coal.The discharge stability of granular coal decrease with increasing of average particle size of granular coal.In the range of 0 to 8% of the moisture content,the discharge stability of granular coal increase with increasing the moisture content of granular coal.

关 键 词：补气料仓 粒煤 补气方式 料仓结构 物料特性 下料稳定性 

分 类 号：TM85[电气工程—高电压与绝缘技术]