自工業革命以來，大氣中二氧化碳的濃度不斷的提高。燃燒用於熱能和發電的傳統化石燃料導致溫室氣體排放的增加。除此之外，資源稀少也是能源問題的一個問題。為了有效實現二氧化碳減排以及增加原料來源，以廢棄物部分取代煤的戰略已成為全球趨勢。
本研究的目的是研究在微富氧燃燒下的焙燒廢木顆粒在流化床中的燃燒行為。田口方法用於優化廢棄物焙燒和生物炭燃燒的操作參數。對於生質物焙燒，使用三個指標，即能量產量指數（EY），近似分析指數（PA）和進階綜合燃燒特性指數（Smix），從每個方面呈現最佳條件。焙燒溫度，停滯時間和氮氣流率是本研究中的操作參數。評估每個參數的訊噪比以獲得不同因素的影響。最佳結果用於生物炭燃燒調查。生物炭燃燒在實驗室規模的流化床反應器中進行，結合氧氣切割的技術，將氧氣注入流化床的不同區域以研究對燃燒效率的影響。生物炭燃燒優化的參數包括不同焙燒程度的生物炭、流化床溫度、氧氣入口位置和氧氣濃度。評估總流化床效率和揮發性燃燒比。根據結果，對於生質物焙燒，溫度是與其他兩個因素相比的主導因素。 EY產生較低溫度，而PA產生較高溫度。 Smix具有適中的溫度結果。對於生物炭燃燒，兩種指標的最佳結果幾乎沒有差別，這兩者都產生低床溫，高焙燒生物炭和下游注入氧氣。然而，較高的氧濃度對於揮發性燃燒比更好，而適度的氧濃度適合於總流化床效率。

The purpose of this study is to investigate the combustion behavior of torrefied waste wood pellets in the fluidized bed under oxygen enrichment combustion. Taguchi method was used to optimize the operating parameters for both biomass torrefaction and biochar combustion. For biomass torrefaction, three indexes, namely energy yield index (EY), proximate analysis-based index (PA), and effective combustion comprehensive index (Smix), were used to present the optimal conditions from each aspect. Torrefaction temperature, residence time, and N2 flow rate were the operating parameters in this study. S/N ratio of each parameter was evaluated to get the influence of different factors. The optimal results were used in the biochar combustion investigation. Biochar combustion was conducted in a lab-scale fluidized bed reactor with the idea of oxygen lancing combined. Oxygen was injected into a different zone of the fluidized bed to investigate the influence on combustion efficiency. The parameters for biochar combustion optimization included torrefied materials, fluidized bed temperature, oxygen inlet position, and oxygen concentration. Total fluidized bed efficiency and volatile combustion ratio were evaluated. According to results, for biomass torrefaction, temperature is the dominant factor comparing to the other two factors. EY yields to lower temperature, while PA yields to a higher temperature. Smix has moderate temperature results. For biochar combustion, the optimal results for both indexes have little difference, which both yields to low bed temperature, high torrefied biochar, and where oxygen is injected at the downstream. However, a higher concentration of oxygen is better for volatile combustion ratio, while moderate oxygen concentration is suitable for total fluidized bed efficiency.

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