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

页码：318 / 332

页数：15

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