Study on Combustion Characteristics of Turbulent Rotating Ammonia-Methane Premixed Flame

被引：0

作者：

Liu, Wenfeng ^{[1
]}

Shuai, Ruiyang ^{[1
]}

Wang, Ping ^{[1
,2
]}

Qian, Weijia ^{[1
]}

Wang, Yongqian ^{[1
]}

Yang, Zhenchun ^{[1
]}

Zhang, Zeyu ^{[1
]}

Ferrante, Antonio ^{[1
,3
]}

机构：

[1] Institute for Energy Research, Jiangsu University, Jiangsu, Zhenjiang,212013, China

[2] State Key Laboratory of Clean Energy Utilization, Zhejiang University, Zhejiang, Hangzhou,310058, China

[3] Environmental Combustion Center Ltd, Via Milano, BA, Gioia del Colle,70023, Italy

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2024年 / 45卷 / 06期

关键词：

Air - Combustion - Free radicals - Nitric oxide - Nitrogen oxides;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A visualized turbulent swirling combustion device was designed to investigate the combustion characteristics of NH3-CH4 mixture. The experiments focused on analyzing the impact of equivalence ratio, ammonia mixing ratio (XNH3), and inlet air flow rate on the combustion process. The results indicated that as the equivalence ratio increased, nitrogen oxide (NO) emissions at the combustion chamber outlet first increased and then decreased, reaching a peak at = 0.9. Analysis of the combustion spectrum revealed that a positive correlation between NO emissions and OH radical intensity. Chain reactions generated by NH2α radicals and water vapor promote the reduction of NO. Moreover, as XNH3 increased, the flame transitioned from blue to orange-yellow, with NO emissions showing a similar trend of first increasing and then decreasing, peaking around XNH3=0.4. Furthermore, NO emission was found to increase with inlet air flow rate during lean combustion but decrease it during rich combustion. The underlying mechanism for this phenomenon is analyzed. © 2024 Science Press. All rights reserved.

引用

页码：1598 / 1604