CPFD simulation on particle behaviour in an entrained-flow gasifier

作     者：Yongshi Liang Cliff Y.Guo Xianglong Zhao Qiang Qin Yi Cheng Lixin He 

作者机构：National Institute of Clean-and-low-carbon EnergyBeijing 102211China Department of Chemical EngineeringTsinghua UniversityBeijing 100084China 

出 版 物：《Clean Energy》 (清洁能源（英文）)

年 卷 期：2020年第4卷第1期

页      面：75-84页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080702[工学-热能工程] 0808[工学-电气工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：CPFD simulation entrained-flow gasifier particle behaviour gasification process 

摘      要：A computational particle fluid dynamics simulation model for entrained-flow gasification was established in this *** simulation results agree with the experimental *** detailed particle information and residence-time distribution were obtained by injecting particle tracers in the *** results show that the particles in the gasifier can be classified into three flowing zones,i.e.a fast-flowing zone,a recirculation zone and a spreading *** criterion for this classification was also *** rapid gas expansion caused by the fast reactions plays a significant role in forming the particle stream into these three *** accelerates the particles in the centre of the gasifier while pushing the particles near the expansion edge into the gas ***,the concentrated oxygen distribution in the gasifier results in the formation of high-and low-temperature *** particles in the fast-flowing zone flow directly through the high-temperature region and most of these particles in this zone were fully reacted with a short residence *** particles in the recirculation zone are in a relatively low-temperature region,most of these particles are not fully gasified,although with a long residence *** rest of particles in the spreading zone show moderate properties between the above two zones.