氨煤混合物着火特性的实验研究  

Experimental Investigation of the Ignition Characteristics of Ammonia-Coal Mixtures

作　　者：杨超强 周月桂[1] 黄冠硕 YANG Chaoqiang;ZHOU Yuegui;HUANG Guanshuo(Institute of Thermal Energy Engineering,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院热能工程研究所,上海200240

出　　处：《工程热物理学报》2025年第3期996-1002,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.52376120)。

摘　　要：在Hencken燃烧器平面扩散火焰燃烧系统上研究了不同氨掺混比例(0%-100%)、不同氧气浓度(5%-30%)下氨煤混合物的着火特性。基于燃烧火焰图像,分析了不同工况下氨煤混合物燃烧火焰形态的变化。根据火焰光强信号定量分析了氨煤混合物的着火延迟距离变化,发现在掺氨比例为0%-20%时,随着掺氨比例增加,着火提前;而在掺氨比例大于20%时,着火延迟距离的变化呈现不同的规律。最后采用光纤光谱仪测量了氨煤混合物燃烧的光谱信号,结果表明NH^(*)/OH^(*)比值与着火延迟距离具有很强的相关性。The ignition characteristics of ammonia-coal mixtures with different ammonia blending ratios(0%-100%)at different oxygen concentrations(5%-30%)were investigated on a Hencken burner flat flame combustion facility.The changes in the flame morphology of ammonia-coal mixtures under different operating conditions were analyzed based on the combustion flame images.The variation in the ignition delay distance of ammonia-coal mixtures was quantified by the combustion flame light intensity signals.It was found that the ignition of ammonia-coal mixtures was advanced with the increase of ammonia blending ratio from 0%to 20%,while the change of the ignition delay distance showed different characteristics when the ammonia blending ratio was greater than 20%.Finally,the spectral signals of the combustion flame of the ammonia-coal mixture were measured through a fiber optic spectrometer,which showed a strong correlation between the NH^(*)/OH^(*)ratio and the ignition delay distance.

关 键 词：氨煤混合物 掺氨比例 着火特性 光谱信号分析 

分 类 号：TK16[动力工程及工程热物理—热能工程]