| 林木生物质剪切粉碎特性及其机理分析 |
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| 引用本文： | 翁星星,盖国胜,吴成宝,杨玉芬,胡小芳. 林木生物质剪切粉碎特性及其机理分析[J]. 林产化学与工业, 2012, 32(1): 19-24 |
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| 作者姓名： | 翁星星 盖国胜 吴成宝 杨玉芬 胡小芳 |
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| 作者单位： | 1. 华南理工大学机械与汽车工程学院, 广东 广州 510640;;2. 清华大学材料科学与工程系粉体工程研究室,北京 100084;;3. 浙江清华长三角研究院 长兴粉体及新材料工程中心, 浙江 长兴 313100 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 剪切粉碎 木质生物质 粉碎特性 粉碎机理 |
Cutting Characteristic of Wood Biomass and Its Pulverizing Mechanism Analysis |
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| WENG Xing-xing,GAI Guo-sheng,WU Cheng-bao,YANG Yu-fen,HU Xiao-fang. Cutting Characteristic of Wood Biomass and Its Pulverizing Mechanism Analysis[J]. Chemistry & Industry of Forest Products, 2012, 32(1): 19-24 |
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| Authors: | WENG Xing-xing GAI Guo-sheng WU Cheng-bao YANG Yu-fen HU Xiao-fang |
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| Affiliation: | 1(1.School of Mechanical & Automobile Engineering,South China University of Technology,Guangzhou 510640,China; 2.Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;3.Changxing Powder and New Materials Engineering Center Yangzi Dela Research Institute of Tsinghua University in Zhejiang,Changxing 313100,China) |
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| Abstract: | 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 particle size were also increased from 716.84 μm to 803.73 μm.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. |
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| Keywords: | cutting pulverization wood biomass pulverizing characteristic pulverizing mechanism |
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