摘要
为探索林木生物质的粉碎特性和粉碎机理,以林木木屑为研究对象,利用剪切磨在不同给料速度和含水量条件下进行粉碎试验,测量了木粉产品的粒度、密度、均匀性系数、长径比、形貌和能耗;并分析了林木生物质的剪切粉碎机理。结果表明:随着给料速度从26.17 kg/h增加到49.85 kg/h,均匀性从1.63下降为1.34,平均粒径从716.84μm增加为803.73μm,而长径比和单位能耗先降后升;随着木屑含水量的增加,木粉断裂由脆性断裂转变为韧性断裂,最大处理能力逐步下降为19.57 kg/h,产品粒度、长径比和单位能耗逐渐增加。
： To investigate the cutting characteristic and pulverizing mechanism of wood biomass, pulverization of wood biomass with different moisture content at different feed rate has been studied in this paper. The operation parameters such as product size, density, uniformity coefficient, aspect ratio, morphology and specific energy consumption were determined in order to discuss the pulverizing mechanism. The results showed that with the increasing of feed rate from 26.17 kg/h to 49.85 kg/h, the average par- ticle size were also increased from 716.84 ~m to 803.73 Ixm. The aspect ratio and energy consumption were reduced first, then increased later. On the other hand, with the increase of＂ moisture content, it was found that the maximum capacity decreased steadily to 19.57 kg/h while the particle size, aspect ratio and specific energy consumption gradually increased.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2012年第1期19-24,共6页
Chemistry and Industry of Forest Products
基金
国家863计划重点项目(2009AA043202)
国家中医药局公益性行业科研专项(200807054)
中日国际合作项目(103000498)
关键词
剪切粉碎
木质生物质
粉碎特性
粉碎机理
cutting pulverization
wood biomass
pulverizing characteristic
pulverizing mechanism
