China Coal Research Institute
Beijing Tiandi Integration & Innovation Technology Corporation Ltd.
National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control

随着我国能源消耗逐年增加,需在减少煤炭使用量的前提下保证能源的供给,寻找可替代燃料势在必行,因而氨作为可代替燃料部分代替煤粉燃烧的氨煤燃烧技术在近年来引起广泛关注,即氨煤混燃技术以其对煤炭燃烧产生的污染物减排和能源利用效率提高的潜力而备受关注。阐述氨煤混燃研究领域的最新进展,包括火焰形态、煤粉着火和点火延迟时间、火焰传播机理及NOx的排放等研究,总结不同燃烧策略和燃烧器下氨煤混燃的燃烧特性和排放特性,分析全球氨煤混燃技术在工业应用中取得的一些重要突破以及未来研究可能面临的挑战。氨煤混燃的反应路径和机理模型类型复杂,在不同条件下的过程不尽相同,需进一步明确中间体物质的多重作用,且有待深入研究气体组分对煤粉和NOx的生成影响规律。目前氨煤混燃点火及减少NOx排放的研究主要聚焦于宏观规律,部分研究着手分析氨煤混燃过程中间产物,但基础研究较少,机理尚不明确,相关燃烧器设计困难,技术仍不成熟,需对其进一步优化。未来可进一步针对提高掺氨比和降低污染物排放等方面进行研究,以实现氨煤混燃在火电厂等大型工业中应用。

As China’ s energy consumption increases, the energy supply should be ensured while reducing the use of coal is imperative. Therefore, the exploration of alternative fuels becomes necessary. Consequently, in recent years, ammoniacoal combustion technology, which partially substitutes ammonia for pulverized coal combustion, has attracted widespread attention. It means that ammoniacoal cocombustion technology is highly regarded for its po tential to reduce pollutants emitted from coal combustion and improve energy utilization efficiency. The latest develop ments in the research field of ammoniacoal cocombustion were demonstrated, including studies on flame morpholo gy, coal powder ignition and ignition delay time, flame propagation mechanism, and NOx emissions. The combus tion characteristics and emission characteristics of ammoniacoal cocombustion under different combustion strategies and burner configurations were summarized, some significant breakthroughs achieved in the industrial application of ammoniacoal cocombustion technology worldwide were analyzed, the potential challenges for future research were discussed. The reaction pathways and mechanism models of ammoniacoal cocombustion are complex and vary under different conditions, which requiring further clarification of the multiple roles of intermediate substances. Moreover, there is a need for indepth research on the influence of gas components on the generation of coal powder and NOx. Currently, research on ammoniacoal cocombustion ignition and the reduction of NOx emissions predominantly con centrate on macroscopic rules, although some studies have commenced analyzing intermediate products during the co combustion process. Nevertheless, there exists a dearth of fundamental research, and the mechanisms remain ambig uous. The challenge in designing suitable burners and the immaturity of technologies highlight the need for further op timization. In the future, further research can be conducted on improving the ammonia blending ratio and reducing pollutant emissions, the application of ammonia coal mixed combustion in largescale industries such as thermal power plants can be achieved.

天地科技股份有限公司科技创新创业资金专项资助项目(2023-TD-ZD014-001)

王圣烨,崔名双,牛芳.氨煤混燃技术在工业应用中的研究进展[J].煤质技术,2024,39(2):32-42.

WANG Shengye, CUI Mingshuang, NIU Fang. Research progress on ammonia⁃coal co⁃combustion in industrial ap⁃plications [J]. Coal Quality Technology, 2024, 39 (2): 32-42.