Temat: Nitrogen Oxides - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Analysis of Nitrogen Oxides Formation During Oxygen - Enriched Combustion of Natural Gas
Autorzy:: Poskart, A.
Radomiak, H.
Niegodajew, P.
Zajemska, M.
Musiał, D.
Powiązania:: https://bibliotekanauki.pl/articles/353857.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: oxygen enhanced combustion
nitrogen oxides emission
Opis:: This paper presents the study of oxygen–enriched combustion of natural gas and its impact on nitrogen oxides emission. The research were performed on two experimental stands, i.e. combustion chambers with an industrial swirl burner of maximum power equal to 90 kW and 10 kW. The investigation includes the influenced of oxygen enhanced within the range between 21% and 30%. Furthermore, the role of temperature during the oxygen enrichment was analysed. The results of the research showed that with the rise in oxygen concentration in the air the concentration of nitrogen oxides also increases what is directly related to the rise in flame temperature as well as the addition of oxygen.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 4; 1925-1930
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Towards clean energy production
Autorzy:: Dors, M.
Powiązania:: https://bibliotekanauki.pl/articles/175564.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: emission control
exhaust
nitrogen oxides
sulfur oxides
carbon dioxide
Opis:: Implementation of stringent regulations of emission from power plants requires the development of new strategies and technologies for removal of pollutants from exhaust gases. This article summarizes current state of PM, NOx, SO2 and CO2 abatement methods. The review is focused on the methods proved in industrial practice at commercially available and pilot installations.
Źródło:: Transactions of the Institute of Fluid-Flow Machinery; 2015, 127; 91-116
0079-3205
Pojawia się w:: Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Modelling of nitrogen oxides formation applying dimensional analysis
Autorzy:: Carnogurska, M.
Brestovic, T.
Prihoda, M.
Powiązania:: https://bibliotekanauki.pl/articles/185009.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: modelowanie matematyczne
analiza wymiarowa
dimensional analysis
nitrogen oxides
mathematical modelling
Opis:: The article presents the procedure for how to establish a mathematical model of nitrogen oxides formation based on the theory of dimensional analysis. The model is based on selected physical quantities (parameters) measurable during regular operation of a heat generation plant. The objective of using dimensional analysis to describe nitrogen oxides formation is to show that between operating parameters of the combustion equipment and the NOx formation there is a significant correlation. The obtained results, which are further described in this article, have proved this fact. The obtained formula expressing nitrogen oxides formation, based on dimensional analysis, applies universally to any boiler fuelled by coal, gas or biomass. However, it is necessary to find C, m, n constants for the formula by experiment, individually for each type of boiler and used fuel. The experiment is based on on-line measurements of selected operational parameters for a given boiler, combusting a certain type of fuel with its actual moisture content and calorific value. The methodology, described in this article, helps to find relationships between the operational parameters and the formation of NOx emissions for a particular furnace. The developed mathematical model has been validated with boilers fuelled by black coal and biomass. Both the results obtained from direct measurements of NOx in both types of boilers, and the results obtained by calculation using equation based on the dimensional analysis, are in a very good accord. When burning coal, the variation between NOx expression from the model and the on-line measurements ranges between -12.23 % and + 9.92 %, and for burning biomass between -0.54 % and 0.48 %. The intention of the authors is to inform the professional community about the suitability of the dimensional analysis to describe any phenomena for which there is currently no exact mathematical formulation based on differential equations or empirical formulas. Many other examples of dimensional analysis applications in practice may be found in the work of Carnogurska and Prihoda (2011).
Źródło:: Chemical and Process Engineering; 2011, 32, 3; 175-184
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A Study on Emissions from Afterburning Chambers Included in Metallurgical Thermal Equipment
Badanie emisji zanieczyszczeń z komór dopalania hutniczych urządzeń cieplnych
Autorzy:: Gil, S.
Rozpondek, M.
Bialik, W.
Powiązania:: https://bibliotekanauki.pl/articles/354620.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: afterburning chamber
nitrogen oxides
carbon oxide
komora dopalania
tlenki azotu
tlenek węgla
Opis:: Investigations on operational parameters of afterburning chambers included in metallurgical thermal equipment have been presented. The effects of temperature and modernization within the firing system on concentrations of nitrogen oxides and carbon oxide have been analysed. To ensure effective afterburning of gases generated during technological processes and minimisation of CO levels, the temperature in the afterburning chamber should be elevated to approximately 1053-1973 K with evenly distributed temperature within the flame. This may lead to slightly higher (by about 0 mg/m³ _n ) NO_x ) NO_x concentrations.
Przedstawiono badania eksploatacyjne komór dopalania w hutniczych urządzeniach cieplnych. Przeanalizowano wpływ temperatury i działań modernizacyjnych w układzie opalania na stężenie tlenków azotu i tlenku węgla. Dla zapewnienia skuteczności dopalania gazów z procesów technologicznych i minimalizacji stężenia CO, należy zwiększyć temperaturę w komorze dopalania do ok. 1053-1973 K, przy zapewnieniu wyrównanego rozkładu temperatury w płomieniu. Może to spowodować nieznaczne podwyższenie stężenia NO_x o ok. 20 mg/m³ _n )
Źródło:: Archives of Metallurgy and Materials; 2014, 59, 2; 785-788
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Higher order fuzzy logic in controlling selective catalytic reduction systems
Autorzy:: Niewiadomski, A.
Kacprowicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/201190.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Selective Catalytic Reduction
SCR
air pollution
nitrogen oxides
adjustable air filter
ammonia valve
interval-valued fuzzy logic system
fuzzy controlling of air filter adjustments
type-2 fuzzy logic system
fuzzy implications
selektywna redukcja katalityczna SCR
zanieczyszczenia powietrza
tlenki azotu
regulowane filtry powietrza
zawór amoniaku
rozmyte kontrolowanie zmian filtra powietrza
typ-2 systemu logiki rozmytej
implikacja rozmyta
Opis:: This paper presents research on applications of fuzzy logic and higher-order fuzzy logic systems to control filters reducing air pollution [1]. The filters use Selective Catalytic Reduction (SCR) method and, as for now, this process is controlled manually by a human expert. The goal of the research is to control an SCR system responsible for emission of nitrogen oxide (NO) and nitrogen dioxide (NO2) to the air, using SCR with ammonia (NH3). There are two higher-order fuzzy logic systems presented, applying interval-valued fuzzy sets and type-2 fuzzy sets, respectively. Fuzzy sets and higher order fuzzy sets describe linguistically levels of nitrogen oxides as the input, and settings of ammonia valve in the air filter as the output. The obtained results are consistent with data provided by experts. Besides, we show that the type-2 fuzzy logic controllers allows us to obtain results much closer to desired parameters of the ammonia valve, than traditional FLS.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 4; 743-750
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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