氧载体NiFe2O4与褐煤的化学链燃烧反应特性实验研究
Experimental Study on Reaction Characteristic of Lignite CLC with NiFe2O4 as Oxygen Carrier
刘勇 1杨慰珺1
作者信息
- 1. 江苏省盐城技师学院,江苏盐城 224000
- 折叠
摘要
本实验制备了氧载体NiFe2O4,并通过热重分析试验系统研究了其对褐煤的氧化还原性能.使用扫描电镜、比表面积和X射线衍射实验表征了表面结构,与NiO和Fe2O3相比,NiFe2O4中Ni的存在增大了比表面积和孔隙体积,提高了褐煤化学链燃烧过程中的反应活性和氧传递能力.此外,循环实验证实了NiFe2O4高反应活性的稳定性.
Abstract
In this work,NiFe2O4 was prepared as oxygen carrier(OC)and its redox performance with lignite was systematically studied by thermogravimetric analyzer(TGA)experiments.Surface structures of the fresh and reduced NiFe2O4 were characterized by SEM,BET,and XRD methods.In comparison with NiO and Fe2O3,the presence of Ni in the NiFe2O4 complex increases the specific surface and pore volume,enhancing its reactivity and oxygen transfer capacity during lignite CLC.Further,multi-cycles experiments confirmed the stability of high reactivity of NiFe2O4.
关键词
化学链燃烧/CO2捕集/铁酸镍/褐煤Key words
chemical-looping combustion/CO2 capture/NiFe2O4/lignite引用本文复制引用
出版年
2024
NETL
NSTL
万方数据