第37卷第4期高校化学工程学报No.4Vol.372023年8月JournalofChemicalEngineeringofChineseUniversitiesAug.2023文章编号:1003-9015(2023)04-0537-07滴管炉中煤颗粒气化过程破碎特性研究高天,龚岩,李恒,陆晗涛,吴晓翔,于广锁(华东理工大学洁净煤技术研究所,上海200237)摘要:基于可视化成像技术,结合图像处理方法,研究滴管炉内不同粒径下福化印尼煤气化过程中破碎概率和破碎个数等破碎特性,并进行统计分析。结果表明,煤颗粒在滴管炉内下落过程中发生不同现象的破碎,其中中心破碎占主导作用,外围破碎发生较少,二者最显著的区别在于持续时间长短和是否改变原本颗粒的行为路径;按煤颗粒破碎时的破碎个数将其分成高破碎模式和低破碎模式,小粒径煤更易发生高破碎模式,即破碎个数更多,煤颗粒发生破碎的概率受最大拉伸应力与煤颗粒结构共同影响。关键词:滴管炉;可视化;颗粒破碎;图像处理中图分类号:TQ534文献标志码:ADOI:10.3969/j.issn.1003-9015.2023.04.003StudyoncoalparticlefragmentationcharacteristicsduringgasificationinadroptubefurnaceGAOTian,GONGYan,LIHeng,LUHantao,WUXiaoxiang,YUGuangsuo(InstituteofCleanCoalTechnology,EastChinaUniversityofScienceandTechnology,Shanghai200237,China)Abstract:Basedonvisualizationimagingtechnologyandimageprocessing,thefragmentationcharacteristicsofFuhuaIndonesiancoalincludingfragmentationprobabilityandfragmentationnumberduringgasificationunderdifferentparticlesizesindroptubefurnaceswerestudiedandstatisticallyanalyzed.Theresultsshowthatdifferentstructuresofcoalparticlefragmentationhappenedinthedroptubefurnaceduringcoaldropping.Centralfragmentationwasdominantwithlessperipheralfragmentation.Themostsignificantdifferencebetweenthetwowasdurationandthechangeoforiginalparticlepathbehaviors.Highfragmentedmodeandlowfragmentedmodewereproposedaccordingtofragmentnumbers.Smallcoalparticlestendtobeinhighfragmentedmode.Theprobabilityofcoalparticlefragmentationisaffectedbythemaximumtensilestressandcoalparticlestructure.Keywords:droptubefurnace;visualization;particlefragmentation;imageprocessing1引言煤气化技术是煤炭利用的核心技术,它是将煤粉或水煤浆转化为合成气(包括CO和H2)中最清洁、最高效的技术之一[1]。由于...