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題 名 | 不同催化劑比例對生質柴油最佳化配方及其廢氣排放之影響=Effects of the Different Methanol and Catalyst Levels on the Optimal Composition and Exhaust Emissions Properties of Four-Cylinder Biodiesel Engines |
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作 者 | 雷偉斌; 王泗華; 彭錦樵; | 書刊名 | 台灣農學會報 |
卷 期 | 13:5 2012.10[民101.10] |
頁 次 | 頁442-459 |
分類號 | 400.15 |
關鍵詞 | 生質柴油; 最佳化配方; 廢氣排放; Wasted cooking oil; Biodiesel; Exhaust emission; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以鹼性觸媒(氫氧化鉀,KOH)做為轉酯化反應的催化劑,探討不同催化劑比例,對製造生質柴油的最佳化配方與廢氣排放之影響。實驗結果顯示,甲醇最適當的添加比例分佈點為187mL,以此做為本實驗甲醇添加量之設定值。當甲醇添加量為187mL時,KOH之最適添加比例為3.4g,並以此做為本實驗驗證KOH添加比例之設定值。將此驗證條件帶入各反應性狀之回歸模式,經計算可得到此生質柴油廢氣排放特性的預估值,為一氧化碳0.0434%、碳氫化合物22.967ppm及二氧化碳2.145%。同時,將最適配方添加量依分析方法測量一氧化碳、二氧化碳及碳氫化合物,將驗證條件下實際排放量之性狀數據與預估值比較,經統計t檢定之後,均無顯著差異(t<2.447),表示本研究之最適操作條件之迴歸模式與實際應用無顯著差異。本研究之廢氣排放結果與市售之生質柴油相當接近,但由於此生質柴油的製造未經過中和、水洗、分離和蒸餾等精製過程;因此,擬建議採用精製製程,以提高生質柴油之品質,將可獲得更佳的廢氣排放結果。 |
英文摘要 | Air pollutants which are produced from burning fossil fuel in diesel engines result in damage to environment. Diesel engines have been considered as one of the sources of major pollution in metropolitan regions. Biodiesel is a clean alternative to fossil diesel fuel. The burning of biodiesel generally produces lower concentrations of CO, HC and PM and almost zero SO2 emissions. This could reduce the corrosion rate of metallic parts of a power plant. Biodiesel can not only be used as a fuel but also as lubricant for moving parts. Hence, the study of biodiesel is one attractive option for the development of an alternative clean fuel. The use of recycled used cooking oil to refine biodiesel may reduce the cost of biodiesel production. In this study, response surface methodology (RSM) was used to analyze the effect of different catalyst levels (potassium hydroxide (KOH) ). A rotatable central composite design (CCD) was used to develop models for the objective responses. The experiments were run at the engine speed of 750 rpm. Individual contour plots of the different responses were overlaid and regions meeting the optimum were identified at the methanol level of 187 ml and the KOH level of 3.4 g, respectively. The results of the t-test demonstrated that the coefficient of variation was not greater than 5%(t < 2.447). Therefore, all the developed models were suitable in representing the optimum operating conditions for a particular application. |
本系統中英文摘要資訊取自各篇刊載內容。