Numerical study on pneumatic feeding characteristics of cold-flow fluidized bed reactor for biomass pyrolysis

被引：3
作者：
Li, Ping [1 ]
Wang, Nana [2 ]
Xu, Ruiyang [1 ]
Chang, Jianmin [3 ]
Si, Hui [1 ]
机构：
[1] Beijing Forestry Univ, Sch Technol, Beijing 100083, Peoples R China
[2] Shandong Univ Technol, Shandong Res Ctr Engn & Technol Clean Energy, Sch Agr Engn & Food Sci, Zibo 255000, Peoples R China
[3] Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China
来源：
POWDER TECHNOLOGY | 2021年 / 388卷
关键词：
Pneumatic feed; Fluidized bed; Biomass particles; Feeding characteristics; CFD; Modeling; CFD; SEGREGATION; PARTICLE; GAS; SIMULATION; CHEMISTRY; TRANSPORT; MOMENTUM; BEHAVIOR; IMPACT;
D O I：
10.1016/j.powtec.2021.04.094
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Comprehensive exploration on the pneumatic feeding characteristics of a fluidized bed can deepen the understanding of biomass pyrolysis. An Euler-Euler model coupled with KTGF is used to simulate the pneumatic feeding process of a two-dimensional cold-flow fluidized bed. The pneumatic feeding mechanism of fluidized bed is analyzed from three aspects: feed gas, feed biomass particles and pneumatic feeding. The feed gas exerts a radial drag force on the quartz sand particles, and merges with the fluidizing gas to promote local fluidization and reduce solid hold-up, which provides feeding space for biomass particles to enter. The radial collision between feed particles and bed materials promotes the diffusion and mixing of particles. And the interaction between feed gas and feed particles promotes them to enter the bed deeper. A dynamic model of pneumatic feeding into the fluidized bed reactor is established, including particle interaction, diffusion, mixing and fluidization together. (c) 2021 Elsevier B.V. All rights reserved.
引用
收藏
页码：318 / 332
页数：15
相关论文
共 49 条
[21]   Experimental Profiles of Lateral Mixing of Feed Particles in a Three-Dimensional Fluidized Bed [J].
Liu, Daoyin ;
Chen, Xiaoping .
AICHE JOURNAL, 2011, 57 (06) :1459-1469
[22]   Numerical study of particle injection into a gas-solid fluidized bed [J].
Liu, Ying ;
Tian, Sihang ;
Li, Shaoshuo ;
Yang, Yao ;
Huang, Zhengliang ;
Sun, Jingyuan ;
Liao, Zuwei ;
Wang, Jingdai ;
Yang, Yongrong ;
Yang, Jian .
POWDER TECHNOLOGY, 2020, 360 :835-845
[23]   Euler-Euler CFD modeling of fluidized bed: Influence of specularity coefficient on hydrodynamic behavior [J].
Loha, Chanchal ;
Chattopadhyay, Himadri ;
Chatterjee, Pradip K. .
PARTICUOLOGY, 2013, 11 (06) :673-680
[24]   KINETIC THEORIES FOR GRANULAR FLOW - INELASTIC PARTICLES IN COUETTE-FLOW AND SLIGHTLY INELASTIC PARTICLES IN A GENERAL FLOWFIELD [J].
LUN, CKK ;
SAVAGE, SB ;
JEFFREY, DJ ;
CHEPURNIY, N .
JOURNAL OF FLUID MECHANICS, 1984, 140 (MAR) :223-256
[25]   Particle mixing and separation performance of gas-solid separation fluidized beds containing binary mixtures [J].
Lv, Bo ;
Luo, Zhenfu ;
Zhang, Bo ;
Qin, Xingzong .
FUEL, 2018, 226 :462-471
[26]   Transient fluidization and segregation of binary mixtures of particles [J].
Marzocchella, A ;
Salatino, P ;
Di Pastena, V ;
Lirer, L .
AICHE JOURNAL, 2000, 46 (11) :2175-2182
[27]   Influence of Reaction Atmosphere (H2O, N2, H2, CO2, CO) on Fluidized-Bed Fast Pyrolysis of Biomass Using Detailed Tar Vapor Chemistry in Computational Fluid Dynamics [J].
Mellin, Pelle ;
Yu, Xi ;
Yang, Weihong ;
Blasiak, Wlodzimierz .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2015, 54 (33) :8344-8355
[28]   Computational fluid dynamics modeling of biomass fast pyrolysis in a fluidized bed reactor, using a comprehensive chemistry scheme [J].
Mellin, Pelle ;
Kantarelis, Efthymios ;
Yang, Weihong .
FUEL, 2014, 117 :704-715
[29]   An Euler-Euler approach to modeling biomass fast pyrolysis in fluidized-bed reactors - Focusing on the gas phase [J].
Mellin, Pelle ;
Zhang, Qinglin ;
Kantarelis, Efthymios ;
Yang, Weihong .
APPLIED THERMAL ENGINEERING, 2013, 58 (1-2) :344-353
[30]  
Mills D., 2016, PNEUMATIC CONVEYING, V3rd
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