Publication detail
Experimental Study of Oxygen-enhanced Combustion on NOx emission, In-flame Temperatures and Heat Flux Distribution
BĚLOHRADSKÝ, P. SKRYJA, P. HUDÁK, I.
Czech title
Vliv spalování s vyšším obsahem kyslíku ve spalovacím vzduchu na emise NOx, teploty v plameni a rozložení tepelných toků
English title
Experimental Study of Oxygen-enhanced Combustion on NOx emission, In-flame Temperatures and Heat Flux Distribution
Type
conference paper
Language
en
Original abstract
The aim of the present study was to experimentally investigate the performance of two oxygen-enhanced combustion (OEC) methods, namely the premix enrichment and air-oxy/fuel combustion. The OEC combustion tests were performed with the conventional experimental low-NOx type burner, namely the two-gas-staged burner. The overall oxygen concentration was varied from 21 % to 38 %. The combustion tests were carried out at the burner thermal input of 750 kW for two combustion regimes – one-staged and two-staged combustion. The oxygen concentration in the flue gas was maintained in the neighbourhood of 3 % vol. on dry basis. The aim of the tests was to assess the impact of the oxidant composition, OEC methods and gas-staging on the characteristic combustion parameters in detail. The parameters included the concentration of nitrogen oxides in the flue gas, flue gas temperature, heat flux to the combustion chamber wall and in-flame temperatures distribution in the horizontal symmetry plane of the combustion chamber.
Czech abstract
Cílem práce bylo experimentálně vyšetřit vlastnosti dvou metod spalování s vyšším obsahem kyslíku (zkráceně OEC). Jmenovitě se jednalo o metodu přimíchávání kyslíku přímo do proudu spalovacího vzduchu a metodu nástřiku kyslíku přímo do spalovacího prostoru. Spalovací zkoušky byly provedeny s konvenčním experimentálním nízkoemisním hořákem s dvoustupňovým přívodem paliva. Celková koncentrace kyslíku se měnila v rozmězí 21 % a 38 %. Zkoušky byly provedeny při konstantním výkonu hořáku 750 kW pro dva spalovací režimy – jednostupňový a dvoustupňový přívod paliva. Koncentrace kyslíku v suchých spalinách byla udržována kolem hodnoty 3 %. Cílem zkoušek bylo vyhodnotit vliv koncentrace kyslíku, metody OEC a stupňovitého přívodu paliva na celou řadu parametrů spalování. Tyto parametry zahrnovaly emise oxidů dusíku, teplotu spalin, rozložení tepelných toků do stěny spalovací komory a rozložení teplot v horizontální rovině symetrie spalovací komory.
English abstract
The aim of the present study was to experimentally investigate the performance of two oxygen-enhanced combustion (OEC) methods, namely the premix enrichment and air-oxy/fuel combustion. The OEC combustion tests were performed with the conventional experimental low-NOx type burner, namely the two-gas-staged burner. The overall oxygen concentration was varied from 21 % to 38 %. The combustion tests were carried out at the burner thermal input of 750 kW for two combustion regimes – one-staged and two-staged combustion. The oxygen concentration in the flue gas was maintained in the neighbourhood of 3 % vol. on dry basis. The aim of the tests was to assess the impact of the oxidant composition, OEC methods and gas-staging on the characteristic combustion parameters in detail. The parameters included the concentration of nitrogen oxides in the flue gas, flue gas temperature, heat flux to the combustion chamber wall and in-flame temperatures distribution in the horizontal symmetry plane of the combustion chamber.
Keywords in Czech
Spalování s vyšším obsahem kyslíku, stupňovité spalování, oxidy dusíku, tepelný tok, teploty v plameni
Keywords in English
Oxygen-enhanced combustion, staged combustion, nitrogen oxides, heat flux, in-flame temperatures
RIV year
2014
Released
23.08.2014
Publisher
Aidic Servizi S.r.l.
Location
Milan, Italy
ISBN
978-88-95608-30-3
ISSN
2283-9216
Book
Proceedings of the 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2014
Volume
39
Pages from–to
787–792
Pages count
6
BIBTEX
@inproceedings{BUT109163,
author="Petr {Bělohradský} and Pavel {Skryja} and Igor {Hudák},
title="Experimental Study of Oxygen-enhanced Combustion on NOx emission, In-flame Temperatures and Heat Flux Distribution",
booktitle="Proceedings of the 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2014",
year="2014",
volume="39",
month="August",
pages="787--792",
publisher="Aidic Servizi S.r.l.",
address="Milan, Italy",
isbn="978-88-95608-30-3",
issn="2283-9216"
}