氨及掺氨燃烧过程机理与特性研究进展

Advances in process characteristics and mechanisms of ammonia combustion and co-firing

氨及掺氨燃烧对于替代化石燃料实现无碳化及减碳化燃烧、实现双碳目标具有积极意义。针对氨及掺氨燃烧在燃料化学工业中的应用潜力,阐述了氨及掺氨燃烧的过程机理包括的反应路径、反应方程及机制模型,主要限制因素包括当量比、氨掺混比例和初始温度等对火焰传播速度和火焰温度的影响,氨及掺氨燃烧的反应、流动与能量的数学模型及其模化性能评估,氨及掺氨燃烧过程氮氧化物的生成与控制,以及掺氨燃烧的工业应用。最后,就氨及掺氨燃烧的基础理论和技术发展进行了展望。

Ammonia combustion and co-firing are of positive significance to replace fossil fuels for carbon-free and carbon-reduced combustion to achieve carbon peaking and carbon neutrality goals.Focusing on the applications of ammonia and blended ammonia as fuels in chemical industry,the present work elaborates on the issues of ammonia combustion and ammonia-based co-firing,including(i)the reaction path,reaction equation,and mechanism model;(ii)the main limiting factors including the effect of equivalent ratio,ammonia ratio,and initial temperature on flame propagation speed and flame temperature;(iii)the mathematical modeling and prediction performances of reactions,fluid flow,and energy transport;(iv)the generation and control of nitrogen oxides during the combustion process;(v)applications of ammonia co-firing technology.Finally,the future outlook is highlighted to advance the fundamentals and technologies of ammonia combustion and co-firing.