化工进展2024，Vol.43Issue(4)：2226-2234,9.DOI:10.16085/j.issn.1000-6613.2023-0549
红砖掺杂改性白云鄂博铁精矿载氧体性能
Red brick doping modified Baiyun Obo iron ore concentrate oxygen carrier performance
摘要
Abstract
The modified Baiyun Obo iron ore concentrate oxygen carrier was prepared by mechanical mixing method with the addition of red brick powder from construction solid waste,and the effect of red brick powder addition on CO chemical chain combustion performance was analyzed by thermogravimetric analyzer and tube furnace experiments,and the mechanism was analyzed by means of characterization such as SEM,XRD,BET,and kinetic analyses.Through the DTG curve,it could be seen that the reaction temperature of Baiyun Ebo iron ore concentrate carrier with CO was basically higher than 800℃,and the red brick powder modified carrier could enhance the chemical chain combustion reaction rate and accelerate the reaction process,especially for the 2.5％red brick modified sample,the reaction effect was optimal at 950℃,and the CO2 yield reaches 87％.The kinetic analysis of the programmed heating experimental data revealed that the red brick powder could shorten the reaction time with CO and accelerate the reaction process,and based on the cyclic reaction experiments,the modified oxygen carrier exhibited a more stable carbon conversion rate.The improved reactivity and enhanced cyclic stability were mainly due to the higher specific surface area and pore structure of the oxygen carriers by the red brick powder.关键词
铁精矿/化学链燃烧/载氧体/建筑固废/动力学分析Key words
iron ore concentrate/chemical looping combustion/oxygen carriers/construction solid waste/kinetic analysis分类
能源科技引用本文复制引用
张鹏飞,陈伟鹏,肖卓楠,吕青岗,张顺风,张子峰..红砖掺杂改性白云鄂博铁精矿载氧体性能[J].化工进展,2024,43(4):2226-2234,9.基金项目
内蒙古自治区高等学校科学研究项目(NJZZ23061). （NJZZ23061）
