本研究利用一多燃料多功能之工業燃燒模擬設施配合火上空氣法，進行純柴油和乳化燃料的燒性能分析，其中乳化燃料是以柴油摻入體積比10%、20%及30%水量等三種。結果顯示，乳化燃料的燃燒性能隨著燃料中含水量的增加，燃燒時所需的總空氣流率、燃燒爐內溫度及NOX的排放濃度，皆有下降的趨勢。含水量較少的乳化燃料，可配合火上空氣燃燒，來增強NOX排放減量的效果。另外，進行火上空氣燃燒法時，隨著燃料中含水量的增加，燃燒會傾向不完全，造成CO的生成。
　　另一方面，在直餾重油摻配裂解輕油之燃燒性能研究中，使用相同的工業燃燒模擬設施。燃料主要為直餾重油、裂解輕油、以及一般市售重油。實驗中將不同體積比例之裂解輕油摻入直餾重油中，並與一般市售重油比較燃燒性能。結果顯示，燃料中隨裂解輕油之體積比增加，燃料之黏度及含氮量隨之下降。含較多裂解輕油之燃料，其火焰長度較短、燃燒溫度較高、NOX的排放濃度較高且積污量較少。由各項測試結果比較之後，發現直餾重油加入體積比為20~40%裂解輕油時，可與一般市售重油有相似的燃燒性能。

　A multi-functional multi-fuel industrial furnace simulator was operated in a over-fire-air (OFA) mode to study the combustion characteristics of diesel fuel and three emulsions, namely, diesel mixed with 10%, 20%, and 30% water. The results indicated that the flow rate of air, the furnace temperatures, and the NOx emission would decrease as the water content of the emulsion was increased. NOx emission could be further reduced with the introduction of OFA. However, CO emission increased noticeably when the OFA was applied to an emulsion with high water content.
　The same furnace simulator was utilized to study the combustion characteristics of various fuel blends of residual oil and light oil. The experimental results were compared with those of a commercial heavy oil. As the volumetric percentage of light oil was increased in the fuel blend, the viscosity and the nitrogen content of the fuel blend decreased; consequently, the flame shortened, the furnace temperatures rose, and the NOx emission and deposition lessened. It was concluded from this study that a fuel blend of 20 to 40 percent light oil had about the same combustion characteristics as the commercial heavy oil.

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