Removal of nitrogen oxides from flue gas by ozonation method

• Autorzy: Jędrusik M. , Kordylewski W. , Łuszkiewicz D.

Warianty tytułu

PL

Usuwanie tlenków azotu ze spalin metodą ozonowania

• Języki publikacji: EN

Abstrakty

EN

In Poland since 01.01.2016 enter into force the records of Industrial Emissions Directive (IED), which increasing the rate of installing flue gas denitrification devices (deNOx). Among the methods of limiting emissions of nitrogen oxides it is recommended to use cooperation of primary methods of reducing NOx emissions and recognized as BAT (Best Available Technology) methods SCR (Selective Catalytic Reduction) and SNCR (Selective Non-Catalytic Reduction) [1]. An alternative to the methods based on the ammonia use may become a method of NOx pre-oxidation. The method presented in the paper is based on oxidation by ozone the NOx and absorption of the oxidation products together with SO2 in absorber of WFGD system (Wet Flue Gas Desulfurization). In the paper the results of contamination removal efficiency based on the pilot-plant studies were presented. The pilot-plant was localized on the terrain of ZEC “Cogeneration” Wrocław. The results of these studies formed the basis of the preliminary draft of exhaust gas ozonation system for a coal-fired unit. The ozonation installation has to clean exhaust gases from SO2 and NOx to the level required by IED directive. Due to the widely use of the 200 MWe units in the Polish electric energy generating system one of such unit with the boiler OP 650 was selected for the design of deNOx system based on the ozonation method. It was assumed that the ozonation installation will be combined with the WFGD system operating on limestone. In the frame of the project demands for media and devices for deNOx and deSOx installations were calculated, and an economic analysis was conducted. The obtained results were compared with available data concerned to the SCR technology.

PL

Obowiązywanie w Polsce limitów emisji SO2, NOx i pyłów od 01.01.2016 roku zgodnych z dyrektywą IED (Industrial Emission Directive) wzmogło tempo instalowania urządzeń odazotowania spalin (deNOx). Wśród przedsięwzięć ograniczających emisję tlenków azotu zaleca się stosowanie współdziałania metod pierwotnych redukcji emisji NOx oraz uznanych za BAT metod SCR (Selective Catalic Reduction) i SNCR (Selective Non-Catalic Reduction) [1]. Alternatywą dla metod amoniakalnych może stać się metoda wstępnego utleniania NOx ozonem z absorpcją produktów utleniania razem z SO2 w absorberze MIOS (Mokra Instalacja Odsiarczania Spalin), którą prezentuje się w pracy. W pracy przedstawiono wyniki pomiarów skuteczności usuwania zanieczyszczeń ze spalin metodą ozonowania wykonane w skali pilotowej na obiekcie zlokalizowanym na terenie ZEC „Kogeneracja” Wrocław. Wyniki tych badań stanowiły podstawę do opracowania wstępnego projektu instalacji oczyszczania spalin dla kotła zasilanego węglem kamiennym. Instalacja ozonowania miała za zadanie oczyścić spaliny z tlenków azotu oraz dwutlenku siarki do poziomu gwarantowanego przez zapisy dyrektywy IED. Ze względu na powszechność stosowania w Polskiej energetyce bloków o mocy 200 MW, do projektu wybrano blok z kotłem OP-650. Instalacja ozonowania będzie współpracować z instalacją mokrego odsiarczania spalin. W ramach projektu wykonano obliczenia zapotrzebowania instalacji na tlen i ozon oraz wykonano analizę ekonomiczną. Otrzymane wyniki porównano z dostępnymi danymi literaturowymi dotyczącymi instalacji SCR.

Słowa kluczowe

EN

boiler; flue gas; NOx removal; ozonation

PL

kocioł; spaliny; usuwanie tlenków azotu; ozonowanie

• Wydawca: KAPRINT
• Czasopismo: Rynek Energii
• Rocznik: 2015
• Tom: Nr 6
• Strony: 119--124
• Opis fizyczny: Bibliogr. 27 poz., fig., tab.

Twórcy

autor

Jędrusik M.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering

autor

Kordylewski W.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering

autor

Łuszkiewicz D.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering

Bibliografia

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