发电技术2024，Vol.45Issue(4)：633-640,8.DOI:10.12096/j.2096-4528.pgt.22169
高水分褐煤流动性实验研究
Experimental Study on Fluidity of High Moisture Lignite
摘要
Abstract
[Objecttives]The influence of moisture in raw coal,particle size and coal bunker material on the fluidity of raw coal was studied to find out the main reasons for coal clogging in raw coal bunkers.[Methods]A raw coal flowability experimental device was designed and built to conduct flowability experiments on raw coal with different moisture and particle sizes,and flow characteristics diagrams were drew to obtain the effects of various factors on raw coal flowability.[Results]The greater the moisture in the raw coal,the more right the broken line in the flow characteristic diagram is,the less the falling mass,the worse the mobility,and the greater the rotation angle required for complete falling.The difference in the initial position of coal falling is due to the difference in static friction between different particle sizes,resulting in different repose angles.At the same time,the decrease in moisture will reduce the friction force and increase the falling mass.The liquidity bend line of polytetrafluoroethylene material is located at the front,and the friction coefficient at the bottom is small.At the same angle,the mass drops more and the mobility is enhanced.[Conclusions]Moisture plays a key role in the fluidity of raw coal,the influence of particle size on the fluidity of raw coal is weak,and only the interaction with moisture can have a great influence on the fluidity of raw coal.Material also has a greater impact on the fluidity of raw coal,but when the moisture is low,the impact can be ignored.关键词
燃煤发电/高水分褐煤/原煤流动性/堵煤/水分/粒径Key words
coal-fired power/high-moisture lignite/raw coal fluidity/coal blockage/moisture/particle size分类
能源科技引用本文复制引用
季恩昌,杨冬,孙佰仲..高水分褐煤流动性实验研究[J].发电技术,2024,45(4):633-640,8.基金项目
吉林省科技科技厅重点科技攻关项目(20210101072JC). Project Supported by Key Scientific and Technological Research Program of the Department of Science and Technology of Jilin Province(20210101072JC). （20210101072JC）
