文献类型：期刊文献

英文题名：In-situ study of particle dynamics influenced by gasification reaction in an impinging entrained-flow gasifier

作者：Wang, Yue[1];Gong, Yan[1];Wu, Yue[1];Lu, Hantao[1];Guo, Qinghua[1];Song, Xudong[2];Yu, Guangsuo[1,2]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Ningxia Univ, State Key Lab High efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China

年份：2025

卷号：399

外文期刊名：FUEL

收录：;EI(收录号：20252018414238);WOS:【SCI-EXPANDED(收录号:WOS:001504044100005)】；

基金：This work has been supported by the National Natural Science Foundation of China (U21A20318, 22178112) , National Key R & D Pro-gram of China (2022YFB4101500) , and Shanghai Rising-Star Program (21QA1402300) .

语种：英文

外文关键词：Particle dynamics; In-situ visualization; Volatile combustion; Flame oscillation; Reaction intensity

摘要：The particle dynamics inside the impinging entrained-flow gasifier have a significant impact on gasification performance. This paper investigates the in-situ particle dynamic behaviors influenced by particle reaction and specific flow filed within the gasifier based on a bench-scale entrained-flow coal-water slurry (CWS) gasification platform. Multiple modified image processing methods were employed to obtain the morphology and dynamic parameters, and an advanced algorithm was utilized to integrate particle motion with real-time changes. Particle rotation and flame oscillations amplitude were quantified, and their connection to the reaction intensity was further explored. The results show a notable reduction in particle size as the particles detach from the burner plane. The number of particles adhering to refractory wall increases significantly due to the impingement of flow field on the wall. The particle dynamics are subject to particle morphology and reaction. The particle aspect ratio is predominantly concentrated at 1.5, with a positive correlation between aspect ratio and particle velocity. Particle velocity during volatile combustion is observed to increase as a consequence of devolatilization. The rotation of particles exerts an influence on the oscillation of volatile flames, with this effect becoming more pronounced as the speed of particle motion approaches the rate of gas flow. An increase in particle rotation speed results in enhancement in flame area and reaction intensity. The flow field within the imaging region was reproduced on the basis of both the position of the flame and the trajectory of the particles.