摘要
化学链燃烧是一种新型的燃烧方式,既可以避免氮氧化物的产生,又可以实现二氧化碳的内分离,近年来受到了国内外研究人员的广泛关注。氧载体的反应性、循环稳定性以及载氧能力等性能,是化学链燃烧系统的重要影响因素。添加惰性载体和制备多活性组分复合氧载体都是可以有效提高氧载体性能的主要方式。为了解决氧载体中各组分之间反应降低氧载体性能的问题,本文就近年来国内外有关Cu基和Fe基复合氧载体的研究进行了总结和分析,发现TiO_(2)和SiO_(2)会与Fe_(2)O_(3)形成尖晶石,不适合做Fe_(2)O_(3)的载体;添加活性组分虽然可以使氧载体释氧速率和循环反应性增强,但也会和Fe_(2)O_(3)或者CuO反应产生复杂物相,使氧载体反应活性下降或者烧结。在此基础上针对活性组分与惰性组分以及活性组分与活性组分之间的相互作用两个方面进行了综述和展望。
Chemical looping combustion is a new type of combustion,which can not only avoid the production of nitrogen oxides,but also realize the internal separation of carbon dioxide.In recent years,chemical looping combustion has been widely concerned by researchers at home and abroad.The reactivity,cycle stability and oxygen-carrying capacity of oxygen carriers are important factors in chemical looping combustion systems.Adding inert carriers and preparing multiactive component composite oxygen carriers are the main ways to effectively improve the performance of oxygen carriers.In order to solve the problem of reducing the performance of oxygen carrier between the components in oxygen carrier,this paper summarizes and analyzes the research on Cu-based and Fe-based composite oxygen carriers at home and abroad in recent years.It is found that TiO_(2)and SiO_(2)will form a sharpstone with Fe_(2)O_(3),which is not suitable for Fe_(2)O_(3)carrier,and the addition of active ingredients,although it can enhance oxygen carrier oxygen release rate and cyclic reactivity,will also produce complex material phase with Fe_(2)O_(3)or CuO reaction,which will reduce or sinter.
作者
王敬泉
郑敏
李康
范宝山
WANG Jing-quan;ZHENG Min;LI Kang;FAN Bao-shan(Kunming University of Science and Technology,School of Metallurgy and Energy Engineering,Kunming 650093,China)
出处
《节能技术》
CAS
2021年第5期468-474,共7页
Energy Conservation Technology
基金
国家自然科学基金地区基金(51866003)
云南省基础研究计划项目-面上项目(2019FB071)
中国留学基金委(201808530023)。
关键词
化学链燃烧
氧载体
活性组分
惰性组分
相互作用
chemical looping combustion
oxygen carrier
active component
inert component
interaction
