滴管炉中煤颗粒气化过程破碎特性研究  

Study on coal particle fragmentation characteristics during gasificationin a drop tube furnace

作　　者：高天 龚岩 李恒 陆晗涛 吴晓翔 于广锁[1] GAO Tian;GONG Yan;LI Heng;LU Hantao;WU Xiaoxiang;YU Guangsuo(Institute of Clean Coal Technology,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学洁净煤技术研究所,上海200237

出　　处：《高校化学工程学报》2023年第4期537-543,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：宁夏回族自治区重点研发计划(2019BCH01001-2);上海市“科技创新行动计划”启明星项目(21QA1402300);国家自然科学基金(21878094)。

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。Based on visualization imaging technology and image processing,the fragmentation characteristics of Fuhua Indonesian coal including fragmentation probability and fragmentation number during gasification under different particle sizes in drop tube furnaces were studied and statistically analyzed.The results show that different structures of coal particle fragmentation happened in the drop tube furnace during coal dropping.Central fragmentation was dominant with less peripheral fragmentation.The most significant difference between the two was duration and the change of original particle path behaviors.High fragmented mode and low fragmented mode were proposed according to fragment numbers.Small coal particles tend to be in high fragmented mode.The probability of coal particle fragmentation is affected by the maximum tensile stress and coal particle structure.

关 键 词：滴管炉 可视化 颗粒破碎 图像处理 

分 类 号：TQ534[化学工程—煤化学工程]