摘要
为研究生物质物料粒度、含水率,成型模具长径比、开口锥度以及保压孔长度对成型燃料品质的影响,以玉米秸秆为研究对象,通过自行设计的不同尺寸的模具制备成型棒料,以成型棒料的松弛密度作为品质评价标准。当成型模具锥度为10°、长径比为5∶1、保压孔长度为30 mm,物料粒度为3.5 mm、含水率为16%时,成型燃料的品质最好,对成型设备的优化具有指导意义。同时,利用环境扫描电子显微镜对成型棒料的微观形貌进行观测,对比分析了不同成型条件下成型棒料的微观形貌,从微观角度研究了生物质燃料的成型机理,研究结果旨在为成型机成型孔的优化设计提供理论参考。
In order to study the effects of particle size, moisture content and aspect ratio, opening taper and packing length on the quality of biomass briquetting, corn stalks are treated as the research object In this paper. The biomass briquetting were formed by self-designed molds of different sizes. The slack density of the biomass briquetting was used as the quality evaluation standard. The best parameters are following, mould taper at 10 degrees, moisture content on 16%,the pressure hole length about 30 mm. And the ratio of mold length to diameter is 5 ∶1. Mold material the particle size is less than or equal to 3.5 mm. It is instructive to optimize the molding equipment. At the same time, the micro-morphology of the briquetting was observed by using an scanning electron microscope. The micro-morphology of the briquetting under different molding conditions was compared and analyzed. The mechanism of biomass fuel formation is studied from the microscopic point of view. The results can provide basis theory for the optimal design of the molding hole of the biomass forming equipment.
出处
《可再生能源》
CAS
北大核心
2018年第2期185-194,共10页
Renewable Energy Resources
基金
国家级大学生创新项目(201210708039)
关键词
生物质燃料
成型工艺
微观形貌
成型机理
biomass briquetting
forming process
microstructure
mechanism
