钱志永,吴英,王潜,谈紫星,黄宇波,刘小伟

• 1:国网江西电力有限公司电力科学研究院
• 2:南昌科晨电力试验研究有限公司
• 3:华中科技大学煤燃烧国家重点实验室

摘要(Abstract)：

以平顶山煤单颗粒做燃烧材料，运用光散射法耦合热泳探针取样技术，测量了平顶山煤火焰不同高度碳烟的质量，研究了煤单颗粒燃烧过程中碳烟的生成和演变。构建了一个能够精确垂直移动的光散射测量系统，测量火焰不同高度处的光散射强度。通过热泳探针取样法获得碳烟颗粒尺寸分布，并结合Mie散射理论，计算得到火焰稳定时不同高度的碳烟颗粒质量。结果表明，随着火焰高度升高，碳烟颗粒质量中值粒径先增大后减小。当火焰稳定燃烧时，在火焰高度H=10 mm处形成大量碳烟，随着火焰高度的升高，碳烟颗粒质量在H=10～30 mm处迅速下降，在H=10～20 mm处平顶山煤火焰中的碳烟颗粒质量下降了58.62%，当H>40 mm时，碳烟颗粒质量缓慢下降。

关键词(KeyWords)： 碳烟颗粒;光散射测量;热泳探针取样;Mie散射

Abstract:

Keywords:

基金项目(Foundation): 国家基金委联合基金重点项目（U22A20211）~~

作者(Author): 钱志永,吴英,王潜,谈紫星,黄宇波,刘小伟

DOI: 10.19666/j.rlfd.202303043

参考文献(References)：

• [1]熊刚,李水清,宋蔷,等.燃煤碳烟生成的实验研究[J].工程热物理学报,2011,32(11):1965-1968.XIONG Gang,LI Shuiqing,SONG Qiang,et al.Experiment study of soot formation in coal combustion process[J].Journal of Engineering Thermophysics,2011,32(11):1965-1968.
• [2]LIPPMANN M.Toxicological and epidemiological studies of cardiovascular effects of ambient air fine particulate matter (PM2.5) and its chemical components:coherence and public health implications[J].Critical Reviews in Toxicology,2014,44(4):299-347.
• [3]XU M,YU D,YAO H,et al.Coal combustion-generated aerosols:formation and properties[J].Proceedings of the Combustion Institute,2011,33(1):1681-1697.
• [4]高琦,李水清,Diego ZABRODIEC,等.燃煤初期碳烟生成的激光诱导白炽光LII诊断研究[J].工程热物理学报,2019,40(6):1433-1438.GAO Qi,LI Shuiqing,Diego ZABRODIEC,et al.Laser induced incandescence(LII) diagnostics on the soot formation in the early stage of pulverized coal combustion[J].Journal of Engineering Thermophysics,2019,40(6):1433-1438.
• [5]MA Z,IMAN F,LU P,et al.A comprehensive slagging and fouling prediction tool for coal-fired boilers and its validation/application[J].Fuel Processing Technology,2007,88(11-12):1035-1043.
• [6]MARICQ M M.Coagulation dynamics of fractal-like soot aggregates[J].Journal of Aerosol Science,2007,38(2):141-156.
• [7]SHIM S H,SHIN H D.Transition morphology of deposits on Si C fibers in propane/air laminar diffusion flames[J].Combustion and Flame,2002,131(1-2):210-218.
• [8]DE FALCO G,COMMODO M,D’ANNA A,et al.The evolution of soot particles in premixed and diffusion flames by thermophoretic particle densitometry[J].Proceedings of the Combustion Institute,2017,36(1):763-770.
• [9]SU Z,ZHOU W,ZHANG Y.New insight into the soot nanoparticles in a candle flame[J].Chemical Communications,2011,47(16):4700.
• [10]BOTERO M L,AKROYD J,CHEN D,et al.On the thermophoretic sampling and TEM-based characterisation of soot particles in flames[J].Carbon,2021,171:711-722.
• [11]MEGARIDIS C M,DOBBINS R A.Soot aerosol dynamics in a laminar ethylene diffusion flame[J].Symposium (International) on Combustion,1989,22(1):353-362.
• [12]SANTORO R J,SEMERJIAN H G,DOBBINS R A.Soot particle measurements in diffusion flames[J].Combustion and Flame,1983,51:203-218.
• [13]GRONARZ T,SCHNELL M,SIEWERT C,et al.Comparison of scattering behaviour for spherical and nonspherical particles in pulverized coal combustion[J].International Journal of Thermal Sciences,2017,111:116-128.
• [14]LIN M,ZHU M,XIAO X,et al.Optical sensor for combustion aerosol particle size distribution measurement based on embedded chip with low-complexity Mie scattering algorithm[J].Optics&Laser Technology,2023,158:108791.
• [15]OLTMANN H,REIMANN J,WILL S.Wide-angle light scattering (WALS) for soot aggregate characterization[J].Combustion and Flame,2010,157(3):516-522.
• [16]KEMPEMA N J,LONG M B.Combined optical and TEMinvestigations for a detailed characterization of soot aggregate properties in a laminar coflow diffusion flame[J].Combustion and Flame,2016,164:373-385.
• [17]ZHANG J Y,QI H,WANG Y F,et al.Retrieval of fractal dimension and size distribution of non-compact soot aggregates from relative intensities of multi-wavelength angular-resolved light scattering[J].Optics Express,2019,27(2):1613-1631.
• [18]BOUVIER M,YON J,LEFEVRE G,et al.A novel approach for in-situ soot size distribution measurement based on spectrally resolved light scattering[J].Journal of Quantitative Spectroscopy and Radiative Transfer,2019,225:58-68.
• [19]BOUVIER M,YON J,LEFEBVRE F,et al.Timeresolved 2D angular scattering of soot particles in atmospheric turbulent flames[J].Proceedings of the Combustion Institute,2022,39(1):1397-403.
• [20]DE IULIIS S,MAFFI S,CIGNOLI F,et al.Three-angle scattering/extinction versus TEM measurements on soot in premixed ethylene/air flame[J].Applied Physics B,2011,102(4):891-903.
• [21]YON J,MORáN J,LESPINASSE F,et al.Horizontal planar angular light scattering (HPALS) characterization of soot produced in a laminar axisymmetric coflow ethylene diffusion flame[J].Combustion and Flame,2021,232:111539.
• [22]綦久鑫.煤和生物质燃烧火焰中碳烟生成与演化特性实验研究[D].武汉:华中科技大学,2021:1.QI Jiuxin.Experimental study on the characteristics of soot formation and evolution in coal and biomass combustion flames[D].Wuhan:Huazhong University of Science and Technology,2021:1.
• [23]VANDER WAL R L.Soot precursor carbonization:Visualization using LIF and LII and comparison using bright and dark field TEM[J].Combustion and Flame,1998,112(4):607-616.
• [24]MIE G.Beitr?ge zur optik trüber medien,speziell kolloidaler metall?sungen[J].Annalen der Physik,1908,330(3):377-445.
• [25]KERKER M.The scattering of light and other electromagnetic radiation[M].New York:Academic Press,1969:1.
• [26]QUERRY M R.Optical constants of minerals and other materials from the millimeter to the ultraviolet[M].Chemical Research,Development&Engineering Center,US Army Armament Munitions Chemical Command,1998:1.
• [27]蒋一奇.复杂环境中燃烧排放碳烟理化特性的研究[D].杭州:浙江大学,2015:1.JIANG Yiqi.Study on the physicochemical characteristics of soot emitted by combustion in complex environment[D].Hangzhou:Zhejiang University,2015:1.