化工学报2019，Vol.70Issue(12)：4536-4545,10.DOI:10.11949/0438-1157.20190721
撞击气流床气化炉内雾化过程中颗粒运动特性
Particle motion characteristics of atomization process in impinging entrained-flow gasifier
摘要
Abstract
Based on the laboratory scale of the impinging entrained-flow bed gasifier, the coal gas slurry was used as the raw material for gasification experiments. The particle information in images was identified by image post-processing algorithm and the particle tracking algorithm was used to calculate the particle trajectory. The particle size, particle velocity and particle motion angle were analyzed by statistical method. The results show that the averaged particle size of the jet flow region near the burner tip concentrates at 325－375 μm, which is larger than the original coal particles. The velocity of most particles concentrates at 1－2 m·s?1 and almost keeps constant during the movement. The motion angles of most particles do not change with time, which means the trajectories of most particles show rectilinear motion. The distribution of all particle trajectories shows a fan-shaped ray starting from the burner tip.关键词
撞击气流床气化炉/雾化过程/颗粒轨迹/可视化技术/统计分析Key words
impinging entrained-flow gasifier/ atomization process/ particle trajectory/ visualization technology/statistical analysis分类
化学化工引用本文复制引用
程晨,薛志村,郭庆华,龚岩,于广锁..撞击气流床气化炉内雾化过程中颗粒运动特性[J].化工学报,2019,70(12):4536-4545,10.基金项目
国家重点研发计划项目(2017YFB0602601) （2017YFB0602601）
国家自然科学基金项目(21676091,21761132034) （21676091,21761132034）
