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Bench scale analysis of the physical attrition properties for copper-ferri-aluminate oxygen carriers during chemical looping combustion
Powder Technology ( IF 5.2 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.powtec.2020.02.067
Jarrett Riley , Ranjani Siriwardane , James Poston

Abstract Abrasion and fragmentation related attrition has been deemed as one of the major design challenges for the development of oxygen carriers for chemical looping process concepts and their implementation. Since the technology seeks to replace conventional power generation, oxygen carrier lifetime is a critical parameter as it can impact the potential competitive nature for the implementation of the process concept. In this study, attrition propensity is examined for two novel carrier materials CuFeAlO4 and CuFe1.5Al0.5O4 in a bench scale fluidized bed reactor unit under reacting conditions. Bench scale outcomes were compared to attrition outcomes from a sub pilot operation to determine comparability of scale. Routes by which attrition performance can be improved are proposed and validated through examining the solid-state chemistry of the carrier system and evaluation method. The study suggests that material structure, maturation and microstructure can play a major role in physical attrition propensity.

中文翻译:

化学循环燃烧过程中铜-铝酸铁氧载体的物理磨损特性的实验室规模分析

摘要 磨损和破碎相关的磨损被认为是开发用于化学循环过程概念及其实施的氧载体的主要设计挑战之一。由于该技术旨在取代传统发电,氧载体寿命是一个关键参数,因为它会影响实施该工艺概念的潜在竞争性质。在这项研究中,在反应条件下,在实验室规模的流化床反应器装置中检查了两种新型载体材料 CuFeAlO4 和 CuFe1.5Al0.5O4 的磨损倾向。将基准规模的结果与子试点操作的损耗结果进行比较,以确定规模的可比性。通过检查载体系统的固态化学和评估方法,提出并验证了可以提高磨损性能的途径。该研究表明,材料结构、成熟度和微观结构可以在物理磨损倾向中发挥主要作用。
更新日期:2020-04-01
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