@conference{
author = "Stojiljković, Dragoslava and Manić, Nebojša and Janković, Bojan and Radojević, Miloš and Bešenić, Tibor and Vujanović, Milan and Jovanović, Vladimir",
year = "2021",
abstract = "The emission control from coal-fired power plants is on a global level in focus last decades due to environmental issues. The emission of nitrogen oxides is recognized among the other pollutants, as the key environmental problem related to energy production by the coal utilization. In this paper, the effect of fuel nitrogen delivery on the NOx precursors (HCN and NH3) during devolatilization processes of selected coal samples (with high content of nitrogen) has been examined. TG-DTG coupled with mass spectrometry (MS) experimental techniques was used for the assessment of nitrogen distribution for HCN and NH3 as intermediate species during coal devolatilization, which directly influences the emission of nitrogen oxides during the combustion process. Further by the establishment, the mass balance of nitrogen together with performed analysis of evolved gases, the distribution of nitrogen between volatiles and char could be also determined. The obtained data for particular coal samples could be exploited for further coal combustion process optimization in regard to NOx emissions, and can be used as the experimentally determined input parameters for mathematical modeling of the coal combustion process, in the large-scale coal-fired power plants., Kontrola emisija iz termoelektrana na ugalj je na globalnom nivou u fokusu poslednjih decenija zbog zaštite životne sredine. Emisija azotnih oksida je, pored ostalih zagađivača, prepoznata kao ključni ekološki problem koji se odnosi na proizvodnju energije korišćenjem uglja. U ovom radu je ispitan uticaj raspodela azota iz goriva na prekursore azotnih oksida (HCN i NH3) tokom procesa devolatilizacije, za izabrani uzorak uglja sa visokim sadržajem azota. Eksperimentalne tehnike TG-DTG direktno povezane sa masenom spektrometrijom (MS) korišćene su za procenu raspodele azota iz goriva na HCN i NH3 kao međuvrste tokom procesa devolatilizacije uglja što direktno utiče na emisiju azotnih oksida tokom procesa sagorevanja. Daljom postavkom masenog bilansa azota zajedno sa izvršenom analizom evoluiranih gasova može se utvrditi i raspodela azota između volatila i koksnog ostatka. Dobijeni podaci za pojedine uzorke uglja mogu se koristiti za dalju optimizaciju procesa sagorevanja uglja u pogledu emisije NOx i mogu se koristiti kao eksperimentalno određeni ulazni parametri za matematičko modeliranje procesa sagorevanja uglja u velikim termoelektranama na ugalj",
publisher = "Serbia : Society of Thermal Engineers of Serbia",
journal = "Power Plants 2021 : Elektrane 2021 : Programme & Full Papers Proceedings",
title = "The estimation of fuel nitrogen distribution during the devolatilization process of coal by TG-DTG-MS analysis, Procena raspodele azota iz goriva tokom procesa devolatilizacije uglja pomoću TG-DTG-MS analize",
pages = "78-92",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12618"
}
