| 摘要: | 本論文以實驗的方式，探討固態衍生燃料稻桿加入添加物米糠及米殼的成型性質，並利用田口品質工程的方法找尋最佳化的參數條件。實驗主要分為兩部分，分別為成型機台半自動化改良及稻桿加入添加物成型性質之研究。而在成型機台改良部分，乃將成型模具產生的成品數量由1個增加到5個，並設計新扣環夾具與脫模底膜機構使成型機台達到半自動化。 在成型性質探討部份使用田口法找尋最佳製程參數條件，在第一次田口法中所找出的添加物米糠及米殼的最佳製程條件分別為添加物含量0.05 g；稻桿含水率8 %；添加物含水率分別為8 %與4 %而成型壓力為50 kg/cm2。根據上述所得實驗結果進行驗證實驗，得知米糠成型壓力在30 kg/cm2、35 kg/cm2與50 kg/cm2；而米殼在40 kg/cm2、45 kg/cm2與50 kg/cm2；添加物含水率4 %、6 %及8 %；添加物米糠含量0.410 g(20 %)、0.512 g(25 %)與0.615 g(30 %)，而米殼含量0.05 g (2.5%)、0.102 g (5 %)與0.205 g (10%)時有最佳的成型製程參數條件。因此藉由驗證實驗所得結果必須再進行第二次田口法分析。最終結果發現添加物米糠含量0.615 g；稻桿與添加物的含水率為6 %；成型壓力50 kg/cm2，而添加物米殼含量0.205 g；稻桿與添加物含水率8 %；成型壓力35 kg/cm2的條件下有最佳製程條件，並且得知添加米糠對成品密度有增加的趨勢，而米殼則沒有。 而在成品硬度與燃燒熱值分析部份，在添加米糠條件下對硬度與燃燒熱值皆有上升的趨勢，而米殼部份則無明顯上升。 This thesis used way of experiment to studied pelleting property of rice straw with additive of rice bran and rice husk. Furthermore, the Taguchi method was used in order to found optimal parameters of pelleting experiments. The experiment was divided into two parts, semi-automation design of pelleting machine and research of pelleting properties for rice straw with additive respectively. In design of pelleting machine, the RDF pellet can be produced from one to 5 for new design of pelleting mold. The jig of fastener ring and mechanism of bottom mold were also designed. The first Taguchi method was used in this thesis that found optimal parameters in pelleting experiments of rice straw with additive of rice bran and rice shell. The optimal parameters were amount of additive 0.05 g, moisture content of rice straw 8 %, moisture content of rice bran 8 %, moisture content of rice shell 4 % and pelleting pressure 50 kg/cm2.The verifying experiments were undertaken according to results of first Taguchi method. The optimal parameters of additive of rice bran and rice shell were found in verifying experiments. In part of rice bran, the pelleting pressure 30 kg/cm2, 35 kg/cm2 and 50 kg/cm2, amount of additive 0.410 g (20 %), 0.512 g (25 %) and 0.615 g (30 %). In part of rice husk, the pelleting pressure 40 kg/cm2, 45 kg/cm2 and 50 kg/cm2, amount of additive 0.05 g (2.5 %), 0.102 g (5 %) and 0.205 g (10 %), both moisture content of additive 4 %, 6 % and 8 % have optimal density for RDF pellets of rice straw with additive. The second Taguchi method was used from results of verifying experiment. The optimal parameters of rice bran included amount of rice bran 0.615 g, moisture content of rice straw and rice bran 6 %, pelleting pressure 50 kg/cm2. In part of rice husk, the conditions of amount 0.205 g, moisture content of rice husk and rice bran 8 %, pelleting pressure 35 kg/cm2 have optimal pelleting properties and density of RDF pellets increased in additive of rice bran, there is not the additive of rice husk .All have the tendency to raised to hardness and heat value under adding the additive of rice bran, but the rice husk has not obviously risen. |
