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Progress in Catalytic Decomposition and Removal of N 2 O in Fluidized Bed

Author

Listed:
  • Miao Miao

    (State Key Laboratory of Power System and Generation Equipment, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Man Zhang

    (State Key Laboratory of Power System and Generation Equipment, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Hao Kong

    (State Key Laboratory of Power System and Generation Equipment, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Tuo Zhou

    (State Key Laboratory of Power System and Generation Equipment, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Xinhua Yang

    (State Key Laboratory of Power System and Generation Equipment, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Hairui Yang

    (State Key Laboratory of Power System and Generation Equipment, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

As a clean fuel combustion technology, the circulating fluidized bed (CFB) has been developed rapidly in recent years, but one of its disadvantages is high N 2 O emissions. With the implementation of increasingly strict pollution control standards, N 2 O decomposition and removal technologies have become the main focus of current research. This paper reviews the latest research on noble metals, metal oxides, the molecular sieve and other new catalysts and decomposition methods for N 2 O removal. The research methods and functions of catalysts are compared and the existing problems are summarized. The future directions of development in N 2 O decomposition and removal are considered. Noble metals and the molecular sieve show satisfactory activity at relatively low temperatures, but their catalytic efficiency is obviously hindered by O 2 , NO and H 2 O. In addition, high costs and insufficient thermal stability limit their widespread industrial application. The metal oxide catalytic technology, especially oxygen carrier-aided combustion (OCAC), is expected to be the ideal method for N 2 O removal in CFB boilers due to its stability and economical feasibility.

Suggested Citation

  • Miao Miao & Man Zhang & Hao Kong & Tuo Zhou & Xinhua Yang & Hairui Yang, 2021. "Progress in Catalytic Decomposition and Removal of N 2 O in Fluidized Bed," Energies, MDPI, vol. 14(19), pages 1-14, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6148-:d:644060
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    References listed on IDEAS

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    1. Blaszczuk, Artur & Pogorzelec, Michal & Shimizu, Tadaaki, 2018. "Heat transfer characteristics in a large-scale bubbling fluidized bed with immersed horizontal tube bundles," Energy, Elsevier, vol. 162(C), pages 10-19.
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