Affiliations: Education Ministry Key Laboratory on Clean Coal Power
Generation and Combustion Technology, Southeast University, Nanjing 210096,
China | Department of Man-Machine and Environment Engineering,
College of Aerospace Engineering, Nanjing University of Aeronautics and
Astronautics, Nanjing 210016, China | Department of Environmental and Chemical Engineering,
Wuhan Institute of Science and Technology, Wuhan 430074, China
Abstract: Non-thermal plasma has been proved to be an effective and
competitive technology for removing NO in flue gas since 1970. In this paper,
the NO reduction mechanism of the non-thermal plasma reaction in
NO/N_2/O_2 system was investigated using
the method of spectral analysis and quantum chemistry. By the establishment of
NO reduction and gas discharge plasma emission spectrum measuring system, the
NO reduction results, gas discharge emission spectra of
NO/N_2O_2 and pure N_2
were obtained, and then the model of molecular orbit of N_2
either in ground state or its excited state was worked out using the method of
molecular orbit Ab initio in Self-Consistent Field (SCF). It was found that NO
reduction in NO/N_2 gas discharge plasma was achieved mainly
through a series of fast elementary reactions and the N(E6) at excited state
was the base for NO reduction.
Keywords: NO reduction, plasma, mechanism, spectral analysis, quantum chemistry
