Numerical simulation of de- N Ox performance by repetitive pulsed discharge when added with hydrocarbons such as ethylene

Kazuo Onda, Hironobu Kusunoki, Kohei Ito, Hiroshi Ibaraki, Takuto Araki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Emission regulations are gradually being tightened recently to prevent further air pollution. Cost-effective and efficient technologies must be developed to process the N Ox generated in the combustion of fossil fuels. One of the candidate technologies to process N Ox is the denitrification of flue gas by pulsed corona discharge, which has been demonstrated experimentally to show high de- N Ox performance. However, the optimization of operation conditions and the appropriate understanding of the de- N Ox process still remain to be clarified. Therefore, following our previous study on ammonia injection, we have simulated in the present study the de- N Ox process to which hydrocarbons such as ethylene have been added to provide guidelines on its proper operation conditions and its main reaction paths to remove N Ox. The simulated results show that the removal efficiency in a case of ethylene addition becomes lower than for ammonia addition, but the de- N Ox energy consumption rate becomes lower than for ammonia injection. However, with ethylene injection the production of the pollutant, formaldehyde, limits the allowable amount of injected ethylene. The de- N Ox performance is better with propylene than ethylene injection because propylene reacts with the OH radical more than ethylene to oxide N Ox. However, formaldehyde is also produced in the case of propylene injection, limiting the allowable amount of injected propylene. The de- N Ox performance is also assessed in a case where HN O2 is considered as Nx Oy.

Original languageEnglish
Article number023301
JournalJournal of Applied Physics
Volume97
Issue number2
DOIs
Publication statusPublished - Jan 15 2005
Externally publishedYes

Fingerprint

ethylene
hydrocarbons
propylene
injection
ammonia
simulation
formaldehyde
air pollution
fossil fuels
flue gases
electric corona
energy consumption
contaminants
costs
optimization
oxides

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Numerical simulation of de- N Ox performance by repetitive pulsed discharge when added with hydrocarbons such as ethylene. / Onda, Kazuo; Kusunoki, Hironobu; Ito, Kohei; Ibaraki, Hiroshi; Araki, Takuto.

In: Journal of Applied Physics, Vol. 97, No. 2, 023301, 15.01.2005.

Research output: Contribution to journalArticle

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