首页|Numerical analysis on the transport properties and residence time distribution of ribbon biomass particles in a riser reactor based on CFD-DEM approach

Numerical analysis on the transport properties and residence time distribution of ribbon biomass particles in a riser reactor based on CFD-DEM approach

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A bended ribbon biomass particle model was developed to explore the dynamic transport properties inside a riser reactor.Residence time distribution(RTD)of the particles was analyzed by using the Eulerian-Lagrange method.The effects of sampling height,particle density,particle size and gas-to-solid mass ratio on RTD were investigated.The coupled Computational Fluid Dynamics and Discrete Element Method(CFD-DEM)model was verified firstly by experimental data on pressure drop and residence time distribution density function.The simulation results demonstrated that the ribbon biomass particles display a typical annular-core spatial distribution during transportation.The RTD of particles exhibit an approximate single-peaked normal distribution.The mean residence time(MRT)can reach up to 0.7 s when the particle density is 1200 kg/m3.Particle with higher density has longer mean residence time.The flow patterns are closer to plug flow if particle length over 12 mm.The particle flow pattern is not sensitive to changes in particle density and size,while the gas-to-material mass ratio has a significant impact on it.

RiserGas-solids two-phase flowRibbon biomass particlesResidence time distributionCFD-DEM

Haichao Zhao、Conghui Gu、Bingyang Xu、Yuan Liu、Mingpu Du、Kaiyuan Deng、Jingyu Zhu、Iana Voronina、Zhulin Yuan

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School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang,212100,China

China Tobacco Jiangxi Industrial Co.Ltd.,Nanchang,330096,China

Institute of Mechanics and Power Engineering,Ogarev Mordovia State University,Saransk,430005,Russia

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing,210096,China

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国家自然科学基金China Tobacco Jiangxi Industrial Corporation Limited

51906092

2024

10.1016/j.partic.2023.08.004

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.87(4)
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