文献类型：期刊文献

英文题名：Study on the Effects of Particle Morphology and Rotational Behavior on Coal Gasification Reaction Characteristics in an Impinging Entrained-flow Gasifier

作者：Zhao, Bo[1]; Zhao, Wenjing[1]; Gong, Yan[1]; Ge, Zhihao[1]; Guo, Qinghua[1]; Wang, Yifei[1]; Bai, Jin[2]; Yu, Guangsuo[1,3]

机构：[1] Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China; [2] State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China; [3] State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China

年份：2025

外文期刊名：SSRN

收录：EI(收录号：20250443138)

语种：英文

外文关键词：Coal - Coal gasification - Morphology - Numerical methods - Rotation - Rotational flow - Spheres - Surface reactions - Temperature distribution

摘要：The study of dynamic behavior and reaction mechanism of coal particles within gasifiers constitutes a critical foundation for advancing gasification technology. Given the complexity of reaction conditions, an integrated methodology combining experimental and numerical approaches is essential for comprehensively analyzing gasification processes. In this study, based on a bench-scale opposed multi-burner (OMB) coal-water slurry (CWS) gasifier, the morphology and movement of the particles are statistically analyzed. Subsequently, numerical simulation is combined with the results of the hot model experiments, a realistic physical model of single particles in the gasifier was established to simulate the gasification process and motion behavior of single particles. Based on the experimental results, the ellipsoidal particle model was established and its rotational motion model was simplified, and the spherical particles were used as the control group, so that the effects of the particle shape as well as the motion state on the reaction characteristics and motion characteristics during the gasification reaction were discussed. The volume-averaged temperature of elliptical particle is slightly different from spherical particle, but the temperature distributions of the internal solids are greatly influenced by the structure. The effect of rotation on the particles is greater than the effect of particle shape. Ellipsoidal particle is more affected by rotational motion than spherical particle. Different rotational motions result in different trends in carbon consumption rates and temperature distributions of the particles. Moreover, particle rotation induces flame deflection, which has been experimentally validated. ? 2025, The Authors. All rights reserved.