化工进展2026，Vol.45Issue(2)：694-701,8.DOI:10.16085/j.issn.1000-6613.2025-0187
增韧贫铁矿载氧体在化学链燃烧中的烧结特性
Sintering characteristics of fiber-toughened Fe-based oxygen carrier in chemical looping combustion
摘要
Abstract
A kind of fiber-toughened Fe-based oxygen carrier(OC)was studied by long-term redox cyclic tests on a fluidized bed thermogravimetric analyzer for chemical looping combustion.Experimental results indicated that sintering began to occur in the OC after the 4th cycle during fluidized bed cycling tests,leading to agglomeration due to particle sintering.In fixed bed cyclic tests,despite using a smaller mass of bed material and low concentration of reactive gases,the OC particles still began to sinter after the 8th cycle,suggesting that sintering and agglomeration were inherent characteristics of the OC particles.Morphological features showed that the elemental iron in the particles melted at high temperatures and adheres to each other upon particle collision,with sintering spreading upwards from the bottom of the bed.Comparing the cyclic characteristics of Cu-based OC by crystallization granulation method,it could be seen that a lower melting point and excessively high oxygen carrying capacity were not the direct causes of agglomeration sintering.Therefore,the key to achieving large-scale industrial application of anti-sintering oxygen carriers lay in the particles with highly-dispersed active metal elements.关键词
增韧贫铁矿/载氧体/化学链燃烧/烧结与团聚Key words
toughening iron ore/oxygen carrier/chemical looping combustion/sintering and agglomeration分类
化学化工引用本文复制引用
朱晓,武亚红,沈来宏..增韧贫铁矿载氧体在化学链燃烧中的烧结特性[J].化工进展,2026,45(2):694-701,8.基金项目
南京工业职业技术大学引进人才科研启动基金(YK22-04-02) （YK22-04-02）
江苏省高等学校基础科学(自然科学)研究面上资助项目(23KJD580002) （自然科学）
国家重点研发计划(2024YFE0101400). （2024YFE0101400）
