Magdalena Janus, Kamila Bubacz, Justyna Zatorska, Ewelina Kusiak-Nejman, Adam Czyżewski and Antoni W. Morawski
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Cheolyong Choi, Yonmo Sung, Gyung Min Choi and Duck Jool Kim
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Włodzimierz Kordylewski, Maciej Jakubiak and Tomasz Hardy
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).
Henrietta Nichipor, Yongxia Sun and Andrzej G. Chmielewski
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Methods of Nitrogen Oxide Reduction in Pellet Boilers
The main goal of this research was to create and test technical solutions that reduce nitrogen oxide emissions in low-capacity pellet boiler. During the research, wood pellets were incinerated in a pellet boiler produced in Latvia with a rated capacity of 15 kW. During the research two NOx emission reduction methods were tested: secondary air supply in the chamber and recirculation of flue gases. Results indicated a drop of NOx concentration only for flue gas recirculation methods. Maximum reduction of 21% was achieved.
Monika Ruszak, Marek Inger, Marcin Wilk, Jan Nieścioruk, Magdalena Saramok, Wojciech Kowalik, Jakub Rajewski, Tomasz Wajman, Wojciech Kacprzak and Dariusz Tadasiewicz
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