碩士生: 李苑萱
畢業年分: 2025年7月
論文名稱: 甲醇/生質碳漿燃料及燃燒特性分析(中文) / Analysis of methanol/bioslurry fuel and combustion characteristics (英文)
中文摘要:
本研究配製由焙燒椰子殼與甲醇組成之生質漿料，並系統性探討其燃燒特性與能量輸出表現。燃燒實驗於實驗室規模旋流穩焰燃燒器中進行，測試燃料含有最高 15 wt% 的焙燒生質材料，並與純甲醇燃燒行為進行比較。研究重點包括點火特性、火焰穩定性、熱釋放率與廢氣排放（NOx 與 CO），以評估添加生質材料對整體燃燒性能之影響。
實驗結果顯示，焙燒椰子殼–甲醇漿料具備快速點火能力，並保持與純甲醇相近的火焰穩定性；旋流燃燒器結構更有助於在高生質比例下維持穩焰。熱分析指出，漿料燃料能有效轉換能量並提供充足熱輸出，同時略微降低火焰峰值溫度。排放測試結果更顯示其環境效益：在中等比例生質混合下，NOx 排放量降低逾 20%，於 15 wt% 比例時幾乎無 NOx 生成，此現象歸因於火焰溫度下降與燃料氮轉化路徑改變。此外，隨生質比例提升，CO 排放亦持續下降，顯示燃燒反應更加完全。
綜合而言，本研究證明焙燒生質材料與醇類燃料製成漿料，不僅可提升燃燒效率，更能有效抑制污染物生成，展現其作為潔淨高效能源的應用潛力。
英文摘要:
This study prepared a biomass slurry fuel composed of torrefied coconut shell and methanol, and systematically investigated its combustion characteristics and energy output performance. Combustion experiments were conducted using a laboratory-scale swirl-stabilized burner, testing blended fuels containing up to 15 wt% torrefied biomass and comparing the results with pure methanol combustion. Key evaluation metrics included ignition characteristics, flame stability, heat release rate, and exhaust emissions (NOx and CO), in order to assess the influence of biomass addition on overall combustion behavior.
The results demonstrated that the torrefied coconut shell–methanol slurry exhibited rapid ignition capability and maintained flame stability comparable to pure methanol. The swirl burner design further facilitated stable flame anchoring even at higher biomass loadings. Thermal analysis confirmed efficient energy conversion and sufficient heat output, accompanied by a slight reduction in peak flame temperature. More importantly, emission measurements revealed significant environmental benefits: at moderate biomass blending ratios, NOx emissions were reduced by over 20%, while at 15 wt% nearly no NOx was detected. This trend is primarily attributed to lowered flame temperatures and altered nitrogen conversion pathways in the fuel. Additionally, increasing biomass content led to continuous reductions in CO emissions, indicating more complete combustion.
Overall, the findings confirm that combining torrefied biomass with alcohol-based fuels in slurry form can simultaneously enhance combustion efficiency and substantially suppress pollutant formation, demonstrating strong potential as a clean and efficient energy source.
