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中南大学学报(自然科学版)

Journal of Central South University

第52卷    第1期    总第317期    2021年1月

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文章编号:1672-7207(2021)01-0070-16
铁基载氧体化学链CH4/CO2转化研究进展
汪根宝1,胡骏2,陈时熠2,张磊1,李蒙1,向文国2

(1. 中石化南京工程公司,江苏 南京,211100;
2. 东南大学 能源与环境学院,能源热转换及其过程测控教育部重点实验室,江苏 南京,210096
)

摘 要: 从工艺优化、载氧体选择与优化以及反应器设计角度对化学链CH4/CO2转化研究进展进行综述与探讨。目前提出的多种化学链CH4/CO2转化工艺可以归结为CH4和CO2在同一反应器以及CH4和CO2在不同反应器2类。热力学计算结果表明铁基载氧体适合于化学链CH4/CO2转化,多种载体和助剂有利于提高铁基载氧体性能甲烷反应性、还原深度、产物选择性、循环稳定性,以后研究重点是活性高、稳定性好、适合大规模制备的铁基载氧体,CH4/CO2在铁基载氧体表面的反应机理需要深入研究。流化床反应器广泛用于化学链过程,燃料反应器的设计是实现大规模工业化的关键。已有研究结果表明,铁基载氧体化学链CH4/CO2转化技术具有良好的前景。

 

关键词: 化学链;CH4/CO2转化;铁基载氧体

Advances in Fe-based chemical looping technology for CH4/CO2 conversion
WANG Genbao1, HU Jun2, CHEN Shiyi2, ZHANG Lei1, LI Meng1, XIANG Wenguo2

1. Sinopec Nanjing Engineering & Construction Incorporation, Nanjing 211100, China;
2. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

Abstract:The advances of chemical looping technology for CH4/CO2 conversion in term of process optimization, selection and development of oxygen carriers as well as reactor design were reviewed. The chemical looping CH4/CO2 conversion processes include CH4/CO2 reacting in the same reactor and different reactors. Thermodynamic calculation results prove that Fe-based oxygen carriers are promising in the field of chemical looping CH4/CO2 conversion. Different supports and promoters can improve reactivity to CH4, reduction extend, product selectivity and stability for Fe-based oxygen carrier. One of the key issues in the future is the development of Fe-based oxygen carriers that have high reactivity, excellent stability and are suitable for large-scale production. The reaction mechanism of CH4/CO2 on Fe-based oxygen carriers requires further research. Fluidized bed reactors have been employed in chemical looping processes widely, and the design of fuel reactor is crucial for industrialization of chemical looping CH4/CO2 conversion. These existing results show Fe-based chemical looping technology for CH4/CO2 conversion is promising.

 

Key words: chemical looping; CH4/CO2 conversion; Fe-based oxygen carriers

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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