碩士生: 莊博丞
畢業年月: 2022年9月
論文名稱: 建置雙色高溫測量法探討氨氣添加於甲烷/空氣預混火焰之燃煤影響 / Developing a two-color pyrometry measurement to discuss the effect of ammonia addition on coal combustion of premixed methane/air flames
中文摘要:
氨是具潛力的零碳燃料與氫載體，但可燃極限、火焰速度與火焰溫度較低，反應性不足且NOx偏高，因此提出氨與煤混燒。本研究探討氨與煤混燒的燃燒行為，並建立非侵入式雙色高溫法，以雙波長濾光片量測火焰場中煤顆粒（可視為煙灰顆粒的聚集體）的溫度，不干擾流場。實驗採用甲烷／空氣／煤與甲烷／氨／空氣／煤預混火焰，量測CO與NOx排放以闡明混燒機制，並對燃燒前後的煤顆粒取樣，以掃描電鏡分析顆粒縮減與表面形貌。
英文摘要:
Ammonia is a potential zero-carbon fuel and hydrogen carrier, but its low flammability limit, flame speed, and flame temperature reduce reactivity and raise NOx, so co-firing it with coal has been proposed. This thesis examines ammonia-coal co-firing and develops a non-invasive two-color pyrometry method that uses dual-wavelength filters to measure the temperature of burning coal particles, which behave like aggregates of soot particles, without disturbing the flow field. Experiments use methane/air/coal and methane/ammonia/air/coal premixed flames, with CO and NOx emissions measured to clarify the co-combustion mechanism. Coal particles sampled before and after combustion are examined by scanning electron microscopy to quantify shrinkage and surface morphology.
