首页|New approach for particle size and shape analysis of iron-based oxygen carriers at multiple oxidation states

New approach for particle size and shape analysis of iron-based oxygen carriers at multiple oxidation states

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
One of the crucial issues in the chemical looping technology lies in its bed material:the oxygen carrier.Particle size analysis of an oxygen carrier is important since in a fluidized bed the material can only work well within a specific size range.While the favorable size ranges for oxygen carrier materials have already been reported,none of the published studies has analyzed the particle size and shape of oxygen carriers in detail.Furthermore,the effect of oxygen carriers'oxidation degree on such properties has not been considered either.This study aimed to report the particle size and shape analysis of five iron-based oxygen carriers,one natural ore,one synthetic material,and three residue products,at different oxidation degrees using dynamic image analysis(DIA).The oxygen carriers were prepared at different mass conversion degrees in a fluidized bed batch reactor.The size distribution,sphericity,and aspect ratio of the oxygen carrier particles were examined experimentally using a Camsizer instrument.Our results show that the DIA method was successfully able to analyze the particle size and shape of our oxygen carriers with satisfying accuracy for comparison.The oxidation state of the investigated materials seems to only affect the particle size and shape of oxygen carriers to a minor extent.However,exposures to redox cycles in a fluidized bed reactor may alter the particle size and shape of most oxygen carriers.

Oxygen carrierSize and shape analysisDynamic image analysisOxidation stateFluidized bedChemical looping

Victor Purnomo、Marcelo Dal Belo Takehara、Robin Faust、Lidiya Abdisa Ejjeta、Henrik Leion

展开 >

Division of Energy and Materials,Department of Chemistry and Chemical Engineering,Chalmers University of Technology,Göteborg 412 58,Sweden

Division of Energy Science,Department of Engineering Sciences and Mathematics,Luleå University of Technology,Luleå 971 87,Sweden

project EU CLARAEuropean Union's Horizon 2020 research and innovation programSwedish Energy AgencyStiftelsen ?Forsk

81784151430-120-26

2024

10.1016/j.partic.2024.01.010

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)：2024.90(7)