Styks Jakub, Knapczyk Adrian, Łapczyńska-Kordon Bogusława
Department of Mechanical Engineering and Agrophysics, University of Agriculture in Krakow, Balicka 120, 31-120 Kraków, Poland.
Materials (Basel). 2021 Feb 12;14(4):879. doi: 10.3390/ma14040879.
Renewable energy sources (RES) represent an increasing share of global energy production. Biomass has the highest potential of all RES. Biomass is used to produce solid biofuels, liquid biofuels, and gaseous biofuels. One of the main directions of research on solid biofuels is to optimize the agglomeration process. The main factors determining the characteristics of the final product in the production of pellets are process and material parameters. Process parameters include compaction pressure, temperature, and geometry of the matrix channel. The parameters of the material are the type of biomass, moisture content, degree of fragmentation, and method of preparation of the material (e.g., drying). The process of pressure compaction is always associated with the negative phenomenon of elastic springback. The aim of this work was to check the influence of compaction pressure and material moisture content on the springback value. The research was conducted on three materials (giant miscanthus, cup plant and Virginia mallow), using four different pressures (131, 196, 262, and 327 MPa) and three different moisture levels (8, 11, and 14%). For all material springback values, the range was 9-16%. Statistical analysis showed that for all plants tested, the effects of compaction pressure and moisture content significantly affected the elastic springback value. Areas of high value springback in the pattern of process parameters were determined.
可再生能源在全球能源生产中所占份额日益增加。生物质是所有可再生能源中潜力最大的。生物质用于生产固体生物燃料、液体生物燃料和气态生物燃料。固体生物燃料研究的主要方向之一是优化团聚过程。在颗粒生产中决定最终产品特性的主要因素是工艺和材料参数。工艺参数包括压实压力、温度和基体通道的几何形状。材料参数包括生物质类型、水分含量、破碎程度和材料制备方法（如干燥）。压力压实过程总是伴随着弹性回弹这一负面现象。这项工作的目的是检验压实压力和材料水分含量对回弹值的影响。研究针对三种材料（巨型芒草、杯状植物和锦葵）进行，采用四种不同压力（131、196、262和327兆帕）和三种不同水分水平（8%﹑11%和14%）。对于所有材料的回弹值，范围为9%至16%。统计分析表明，对于所有测试植物，压实压力和水分含量的影响显著影响弹性回弹值。确定了工艺参数模式中高值回弹区域。
