标题: 垃圾衍生燃料(RDF-5)成形性研究
The Research on Formability of Refuse Derived Fuel (RDF-5)
作者: 张志诚
ChinCheng Chang
洪景华
ChingHua Hung
机械工程学系
关键字: 垃圾衍生燃料;成形;木屑;稻草;废纸箱;RDF;formability;saw dust;straw;waste carton
公开日期: 2002
摘要: RDF-5是将垃圾中之可燃物经破碎、干燥、分选、成形等程序制成棒状之燃料。不但能达到处理垃圾的目的,也可增加资源回收再利用的效益。
本研究先从文献与专利搜寻着手,再透过连体材料与多孔性材料的模拟分析,对模具参数与挤制时之压力作一探讨。而后先利用木屑作为简化的材料进行实验,在实验时简化成形模具为单一模口。在对不同含水率之木屑与不同半模角与挤制比之模具进行实验后发现,含水率对于成形时有极大的影响。而模具的改变对于成形于否较无关系,而较大之挤制比与半模角所需之成形压力较大。此外也以稻草杆、废塑料及废纸相等代表性之垃圾材料进行成形实验,实验结果与木屑成形实验有类似之趋势。
RDF-5 is a fuel product recovered from combustible wastes. The producing processes of RDF-5 includes crushing, drying, separating and forming. This kind of product not only can solve the problem of municipal solid wastes but also have great advantage in recycling.
This research focuses on the formability of RDF-5. After literatures survey, simplified material models such as continuum material and porous material were extruded numerically by FEM to obtain the basic relationships between extrusion pressure and extrusion parameters. On the bases of these relationships, extrusion experiments were conducted on wood saw dust and moisture contents of saw dust, extrusion ratios and half die angles were taken as controlled parameters to explore the formability of RDF-like saw dust. According to the results of experiments, the moisture content of saw dust was found to be the most significant effect on the formation of sound and solid extrusion product, while other extrusion parameters show inrelevant effect. Similar to results of metal extrusion, large extrusion ratio and higher half die angle require large forming pressure. Finally, straw, waste plastics and waste carton, which are typical ingredients in the RDF, were also extruded in the same experiment procedures to explore their formabilities. Similar results as those obtained from dust saw experiment were obtained.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT910489040
http://hdl.handle.net/11536/70794
显示于类别:Thesis