Pilot Plant Studies on No_x Removal Via No Ozonation and Absorption

• Autorzy: Kordylewski W. , Jakubiak M. , Hardy T.

Warianty tytułu

PL

Badania w skali pilotowej dotyczące efektywności usuwana NO_x porzez utlenianie NO i absorpcję

• Języki publikacji: EN

Abstrakty

EN

The results of experimental investigations on the removal of NOx from gases applying ozone as the oxidizing agent and the absorption of higher nitrogen oxides in the sodium hydroxide solutions are presented. The experiment was conducted using a pilot plant installation with the air flow rate 200 m3/h, being a prototype of a boiler flue gas duct and a FGD scrubber. It was shown that in the range of [NOref] = 50 ÷ 250 ppm the mechanism of NO ozonation depends on the molar ratio X = O3/NOref: for X ≤ 1.0 oxidation of NO to NO2 predominates and NO2 is poorly absorbed, for X >> 1.0 NO2 undergoes further oxidation to N2O5, which is efficiently absorbed in the scrubber. The stoichiometric molar ratio of complete conversion of NO into N2O5 is X = 1.5, in these studies to reach the effectiveness η ≥ 90% the molar ratio X was much higher (2.75).

PL

Przedstawiono wyniki badań doświadczalnych dotyczące usuwania NOx z gazów z zastosowaniem ozonu jako utleniacza i absorpcji wyższych tlenków azotu w roztworach wodorotlenku sodu. Badania prowadzono na strumieniu powietrza 200 m3/h w instalacji pilotowej będącej prototypem instalacji kotłowej odprowadzenia spalin i skrubera IOS. Wykazano, że w zakresie [NOref] =50÷250 ppm mechanizm ozonizacji NO zależy od stosunku molowego X = O3/NOref: dla X ≤ 1.0 przeważa utlenianie NO do NO2 a NO2 jest słabo absorbowany, dla X >> 1,0 NO2 ulega dalszemu utlenianiu do N2O5, który jest efektywnie absorbowany w skruberze. Stosunek molowy przy całkowitej konwersji NO do N2O5 wynosi X = 1.5, w przeprowadzonych badaniach, aby osiągnąć efektywność η ≥ 90% stosunek X był dużo większy (2,75).

Słowa kluczowe

EN

nitric oxide; ozonation; absorption

PL

tlenek azotu; ozonowanie; absorpcja

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2013
• Tom: Vol. 39, no. 3
• Strony: 93--106
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Kordylewski W.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Institute of Power Engineering and Fluid Mechanics Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Jakubiak M.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Institute of Power Engineering and Fluid Mechanics Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Hardy T.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Institute of Power Engineering and Fluid Mechanics Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

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