Operating of Industrial Scale Dielectric Barrier Discharge Reactor for NOx or Odor Control

Young Hoon Song*, Min Suk Cha, Jae Ok Lee, Yongho Kim, Kwan Tae Kim, Wan Ho Shin, Seock Joon Kim

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

A practical scale dielectric barrier discharge (DBD) reactor, which treats up to l,000.Nm 3 /hr of polluted gases, has been operated to control NOx or odor. The DBD reactor treats the combustion flue gases emitted from a 300-horse power diesel engine or the air contaminated by the dilute odor gases, such as H 2 S, NH 3 , and Acetaldehydes. In the case of NOx treatment test, the combined process of DBD and a conventional NH 3 selective catalytic reduction (SCR) process have been simultaneously used. The operating temperatures of the present combined process, i.e. 100 °C, are significantly lower than the typical temperature window of the SCR, i.e. 300 ∼ 450 °C. The NOx treatment test has been conducted for 6 months, which identify many of the practical problems, such as durability of the catalysts, reliability of the DBD reactor under abrupt variations of temperature conditions, deposition of soot particles, etc. In the case of odor control test, secondary chemical process assisted by a catalyst process has been adopted to reduce the gaseous by-products produced from the discharge chemical process, such as O 3 , HNO 3 , and NO 2 . In advance to the practical scale applications of DBD technique, characteristics of DBD have been carefully compared with those of a pulsed corona. In this comparison study, optical measurements of light emission, theoretical estimation of the electron energy distributions, and performance of NOx treatments for both types of non-thermal plasma have been conducted.

Original languageEnglish (US)
Number of pages1
JournalIEEE International Conference on Plasma Science
StatePublished - Oct 17 2003
Event2003 IEEE International Conference on Plasma Science - Jeju, Korea, Republic of
Duration: Jun 2 2003Jun 5 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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