碳氫燃料是導致空氣污染和全球暖化的主要原因，因此零碳排放的目標有待實現。最近的研究表明，氨可視為替代燃料，為可再生能源提供能量儲存。此外，氨可視為氫載體的零碳載體。然而，與碳氫燃料相比，氨具有較低的可燃性極限、火焰溫度和火焰燃燒速度等缺點，導致低反應性和NOX生成率較高。因此，提出了用氨（NH3）混燒煤的想法。本研究調查了氨 (NH3)與煤共燃過程中的燃燒行為，並開發了一種用於測量火焰場中煤顆粒的固體燃料溫度的診斷技術。非侵入式診斷技術的優點是避免了溫度測量對流場產生影響。因為利用兩個波長作為燃燒煤顆粒發射的濾光片，以測量粉煤顆粒溫度，因此被稱為“雙色高溫法”。 在雙色高溫計中，兩種波長的熱輻射由煙灰顆粒發射並測量為溫度。當燃燒過程中存在的氧氣不足並產生碳煙時，就會發生烴類燃料的不完全燃燒。因此，煤顆粒可以認為是很多煤煙顆粒的聚集體。混合火焰類型包含甲烷/空氣/煤和甲烷/氨/空氣/煤預混火焰。本研究測量了污染物 CO 和 NOX 排放，以闡明混燃機制。為了確認燃燒，針對完整的煤粉顆粒和燃燒後的顆粒進行採樣。此外，透過掃描式電子顯微鏡（SEM）計算顆粒減少面積。

The goal of zero-carbon emission awaits to be accomplished since hydrocarbon fuels are the culprits of both air pollution and global warming. Recent studies suggest that ammonia can be used as an alternative fuel, which provides energy storage for renewable energy sources. Besides, the zero-carbon carrier of ammonia can be used as a hydrogen carrier. However, compared with hydrocarbon fuels, ammonia has several drawbacks such as lower flammability limit, flame temperature, and flame burning velocity, which results in lower reactivity rate, and higher NOX production rate. Thus, the idea of co-firing coal combustion with ammonia (NH3) has been proposed. This study investigates the combustion behavior during the co-firing of ammonia (NH3) with coal combustion and develops a measurement technique for measuring the solid fuel temperature with coal particles in the flame field. The advantage of non-intrusive measurement technique is to avoid the impact of the operating temperature measurement on the flow field. The reason for the name “Two-color pyrometry” is from the utilization of two wavelengths as burning coal particles emitted filters, which measure the pulverized coal particle temperature. In Two-color pyrometry, two wavelengths of thermal radiation are emitted by incandescent soot particles and measured as temperature. The incomplete combustion of hydrocarbon fuels occurs when insufficient oxygen is present in the combustion process and produces soot. Thus, the coal particle can be considered a lot of soot particle aggregation. A hybrid flame contains methane (CH4) /air/coal and methane/ammonia (NH3) /air/coal premixed flames. The pollutants CO and NOX emissions are measured in this study to shed light on the co-firing mechanism. To confirm the combustion, we sample complete pulverized coal particles and the particles after combustion. In addition, the particle reduction area is calculated by a Scanning Electron Microscope (SEM).

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