0~#柴油燃烧初期火焰光谱分析  

Analysis of Flame Spectrum at the Initial Stage of 0~# Diesel Oil Combustion

作　　者：冯军[1] 蒋新生[1] 李孝斌[2] 杜威[2] 翟琰[1] 徐建楠[1] 

机构地区：[1]中国人民解放军后勤工程学院军事供油工程系,重庆401331 [2]中国人民武装警察部队学院消防工程系,河北廊坊065000

出　　处：《光谱学与光谱分析》2017年第2期537-540,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(51574254);国家(863)项目(2014aa7013037);重庆市应用开发计划项目(cstc2014yykfB90001);重庆市科技攻关计划项目(cstc2012gg-sfgc00002)资助

摘　　要：为推进柴油燃烧初期智能识别与抑制灭火技术的发展,通过小尺度油池实验和光谱分析的方法,首次对0~#柴油燃烧初期火焰光谱进行了初步研究,得到0~#柴油燃烧初期火焰光谱的整体特性:在200~380nm的近紫外波段,光谱强度最弱,强度与波长关系不大,特征谱带数量最少,基本没有明显的谱峰;在380~780nm的可见光波段,光谱强度最强,强度随波长的增大而增大,特征谱带最多,存在较多明显的谱峰;在780~1 100nm的近红外波段,光谱强度相对较大,在780nm处出现强度的拐点,强度随波长的增大而减小,特征谱带较多,存在一定数量较为明显的谱峰。进一步对其火焰光谱进行分析得到:燃烧过程中主要的中间产物自由基包括OH,CN,CH,C_2,H2O等;火焰光谱中主要的特征谱带包括OH自由基306.4nm系统谱带和振动转动谱带、CN自由基紫色光区和红色光区谱带、CH自由基431.5nm谱带、C_2自由基Swan和Phillips近红外谱带、H2O分子振动转动谱带等;特征谱带特征波长及时间的分布情况和主要生成机制;在本实验批次0~#柴油中存在金属K元素,其特征谱线在761和769nm处出现明显的谱峰;在431,512,516,547,589,766,769,891和927nm出现较为明显的特征谱峰,适合作为0~#柴油燃烧初期火焰识别的标志。With small-scale oil pool experimental and spectral analysis method,the flame spectrum in initial stage of 0-#diesel oil combustion was conducted a preliminary study for the first time,which was used to develop the technique of intelligent identification and suppression of fire extinguishing at the initial stage of diesel oil combustion.It educed the overall characteristics flame spectrum at the initial stage of 0-#diesel oil combustion：in 200-380nm wavelength of near-ultraviolet bands,the spectral intensity is the weakest,the spectral intensity does not change with wavelength,the number of characteristics spectral bands is minimum,the number of obvious characteristics spectral peaks is almost none;in 380-780nm wavelength of visible bands,the spectral intensity is the strongest,the spectral intensity increases with wavelength,the number of characteristics spectral bands is maximum,the number of obvious characteristics spectral peaks is large;in 780-1 100 nm wavelength of near-infrared bands,the spectral intensity is relatively strong,the inflection point of spectral intensity appears in 780 nm,the appeared intensity decreases with wavelength,the number of characteristics spectral bands is relatively large,the number of obvious characteristics spectral peaks is at a certain number.It is educed through further analysis of the flame spectrum that：the primary intermediate radicals includes OH,CN,CH,C2,H2 O,etc;the primary characteristic spectral bands includes the OH racial bands of 3 064System and Vibration-Rotation bands,the CN racial bands of Violet System and Red System,the CH racial bands of 4 315System,the C2 racial bands of The Swan system and Phillips Near Infra-red System,the H2 O molecular Vibration-Rotation bands,etc;the bands and time distribution of primary intermediate radicals and its main generation mechanism;the existence of potassium in this experimental batches of 0-#diesel oil and the spectral peak of spectral lines in 766 and 769nm is obvious;the peak of spectral intensity in 431,512,51

关 键 词：0^#柴油 燃烧初期 火焰光谱 自由基 特征谱带 特征谱峰 

分 类 号：O657.3[理学—分析化学]