Simultaneous NOx and SO2 Removal in Wet and Semi-dry FGD

• Autorzy: Gostomczyk M. A. , Kordylewski W.
• Języki publikacji: EN

Abstrakty

EN

Since 80. of the last century many investigations have been made on the application of NO oxidation to higher oxides in order to remove them from flue gas in water solution of NaOH or in suspensions of CaCO3 and Ca(OH)2. This method of flue gas de-nitrification hasn’t got industrial applications yet because the development of low-NOx burners made possible to reduce the NOx content in exhaust gases approximately from 1000 to 400 mg/m3, which satisfies the EU emission limits up to 2016. Actually, the technology of NO oxidation again is getting serious concern because the NO removal efficiency obtained with two-step process is better than 90% without an expensive installation of SCR. The investment is similar like SNCR, however without its negative effects (NH3 in flue gas and ash). The studies conducted at the Wrocław University of Technology are the first approach to develop new, wasteless technology of NOx removal based on O3 or H2O2 injection into exhaust gases before a scrubber of existing wet flue gas desulphurisation installations. The results of this preliminary, laboratory studies, in which flue gas (0.2 m3/h) from the pulverized hard coal-firing boiler (OP-430) was used, have showed the efficiency of reduction of NOx emission in the range of 84-85% at the temperature 60-80 oC.

Słowa kluczowe

EN

gas emission; combustion gases

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2010
• Tom: Vol. 30 nr 1-2
• Strony: 15--24
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Gostomczyk M. A.

autor

Kordylewski W.

• Wrocław University of Technology, Institute of Power Engineering and Fluid Mechanics, 50-370 Wrocław, W. Wyspiańskiego 27,,

Bibliografia

• [1] Wet scrubbing apparatus and method for controlling NOx emissions. Pat. USA No. 7 214 356 (2007).
• [2] Gostomczyk M.A., Krzyżyńska R., Multi-pollutant control from pulverized coal-fired boiler OP-430, U.S. EPA -U.S. DOE EPRI- A&WMA Power Plant Air Pollutant Control “MEGA” Symposium, Baltimore, U.S., August 28-31 (2006).
• [3] Gostomczyk M.A., Krzyżyńska R. Technologia ograniczania emisji SO2, NOx i rtęci z kotłów spalających węgiel i odpady, Archiwum Spalania vol. 5, nr 1-4 (2005).
• [4] Gostomczyk M. A., et al., Układ instalacji do jednoczesnego usuwania tlenków azotu i tlenków siarki z gazów odlotowych, Patent RP-Nr 184039 (2003).
• [5] Gostomczyk M.A. and Józewicz W., Simultaneous Control of SO2, NOx and mercury emissions from coal-fired boilers, Combined Power Plant Air Pollution Control –MEGA Symposium, Washington DC May 19-22 (2003).
• [6] Gostomczyk M. A., Oryszczak J., Ograniczenie emisji tlenków azotu w instalacjach odsiarczania spalin, Inżynieria Chemiczna i Procesowa, t. 5, zesz.4 (2004), s. 2153-2160.
• [7] Gostomczyk M.A.,Oryszczak J. Sposób usuwania NOx i SO2 ze spalin, zgłoszenie patentowe NR P-369911 (2004).
• [8] Method and apparatus for improving oxidation at nitric oxide using irradiated oxidizing compounds. Pat. USA Nr 6 423 277 (2002).
• [9] Larnon Ch. R., et al., Electro + catalytic oxidation technology applied to mercury and trace elements removal from flue gas, Conference on Air Quality II, McLean, VA, September 20 (2000).