Simultaneous removal of NO and SO2 from flue gas by pulsed corona discharge

Wei Cao, Zhongyang Luo, Fei Xu, Peng Wang, Kefa Cen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The Electrostatic Precipitator (ESP) combined with a pulsed power source can convert NO and SO2 to NO2 and SO3 with increased PM2. 5 capture efficiency. Simultaneous removal of NO and SO2 from flue gas by pulsed corona discharge was experimentally investigated. This paper focuses on the main factors influencing NO and SO2 conversion efficiencies. The results indicated that by increasing pulse peak voltage, pulse frequency, number of electrodes, residence time and decreasing initial concentrations, the conversion efficiencies can be improved. High air humidity played an important role in SO2 conversion efficiency. The NO and SO2 conversion efficiencies reached 70% and 90% with initial concentrations of about 150 × 10-6 in the experimental system.

Original languageEnglish
Pages (from-to)2487-2492
Number of pages6
JournalHuanjing Kexue Xuebao / Acta Scientiae Circumstantiae
Volume28
Issue number12
StatePublished - Dec 2008
Externally publishedYes

Keywords

  • De-NO
  • De-SO
  • Mechanism
  • Pulsed corona discharge

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