Low-temperature NOx removal for flue gas cleanup

Ben W L Jang, James J. Spivey, Mayfair C. Kung, Harold H Kung

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

NOx reduction with hydrocarbons is studied at temperatures around 150 °C to develop an easy retrofit NOx removal process to be located downstream of the particulate control device for flue gas cleanup. Acetone is the most active hydrocarbon reductant for NO reduction in the presence of O2 and H2O. At 150 °C, 35% NO reduction was obtained over 5% Cu-2% Ag/PCB. The activity, however, is greatly decreased by the presence of SO2. NO oxidation to NO2 is studied for further improving the NO reduction activity because NO2 is known to be more reactive than NO. Active carbon fibers and PCB active carbon are both active for NO oxidation at low temperature, but the activity decreased with temperature. Ten percent Co3O4/Al2O3 and 5% Au/Co3O4 are not active for NO oxidation in the absence of SO2 and at 150 °C, but are very active in the presence of SO2 and H2O. Five percent Au/Co3O4 is especially stable for NO oxidation to NO2 at temperatures from 120 to 150 °C for more than 15 h.

Original languageEnglish
Pages (from-to)299-306
Number of pages8
JournalEnergy and Fuels
Volume11
Issue number2
Publication statusPublished - Mar 1997

Fingerprint

Flue gases
Oxidation
Polychlorinated Biphenyls
Hydrocarbons
Polychlorinated biphenyls
Temperature
Reducing Agents
Acetone
Carbon fibers
Carbon
Thermodynamic properties

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Jang, B. W. L., Spivey, J. J., Kung, M. C., & Kung, H. H. (1997). Low-temperature NOx removal for flue gas cleanup. Energy and Fuels, 11(2), 299-306.

Low-temperature NOx removal for flue gas cleanup. / Jang, Ben W L; Spivey, James J.; Kung, Mayfair C.; Kung, Harold H.

In: Energy and Fuels, Vol. 11, No. 2, 03.1997, p. 299-306.

Research output: Contribution to journalArticle

Jang, BWL, Spivey, JJ, Kung, MC & Kung, HH 1997, 'Low-temperature NOx removal for flue gas cleanup', Energy and Fuels, vol. 11, no. 2, pp. 299-306.
Jang BWL, Spivey JJ, Kung MC, Kung HH. Low-temperature NOx removal for flue gas cleanup. Energy and Fuels. 1997 Mar;11(2):299-306.
Jang, Ben W L ; Spivey, James J. ; Kung, Mayfair C. ; Kung, Harold H. / Low-temperature NOx removal for flue gas cleanup. In: Energy and Fuels. 1997 ; Vol. 11, No. 2. pp. 299-306.
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