颗粒状秸秆物料流动特性试验

以华北地区8种农作物秸秆为研究对象,通过颗粒状秸秆静态堆积角、压缩率、均匀度、抹刀角4个指标测试,采用Carr指数法及内摩擦角评价分析了各种颗粒状秸秆物料的流动特性。结果表明,通过Carr指数法得分可以反映颗粒状秸秆流动性的变化规律,得分越高,流动性越好;8种秸秆分为易于流动(如玉米芯)、一般流动(如玉米秸秆)、不易流动(如豆秸)3类,该结果与采用内摩擦角评价原料的流动特性基本一致。

Flow Characterization of Biomass Particle Straw

Carr-evaluation method for evaluating flow characterization of biomass particle straw has been studied to resolve the problem of testing flow characterization of crop straw. And the flow characterization of 8 types of crop straw came from North China was measured by the two methods of Carr-evaluation method and inner-friction angle method. The results showed that Carr-evaluation method can reflect the variation of particle straw flow characterization, the more score it had, the better flow characterization it was, and the 8 types of crop straws were divided into three categories, easy flow (such as the score of corn cob was 81), the general flow (such as corn stalks) and difficult flow (such as soybean), the results of Carr-evaluation method is similar to the results of inner-friction angle method.