Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.659 CiteScore™: 1.2

ISSN Imprimir: 2150-3621
ISSN On-line: 2150-363X

International Journal of Energy for a Clean Environment

Anteriormente Conhecido Como Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v4.i4.20
12 pages

NOx FORMATIONS IN DILUTED CH4/H2 COUNTERFLOW DIFFUSION FLAMES

G. J. Rortveit
Department of Energy and Process Engineering, The Norwegian University of Science and Technology (NTNU), Kolbjorn Hejes v. 1A, N-7491 Trondheim, Norway
J. E. Hustad
Department of Energy and Process Engineering, The Norwegian University of Science and Technology (NTNU), Kolbjorn Hejes v. 1A, N-7491 Trondheim, Norway

RESUMO

Flames of methane and hydrogen mixtures (hythane) are studied in a counterflow burner. Measurements of temperature and NO profiles are taken and compared to numerical computations. At a constant strain rate of 100 s–1, three series of fuel compositions varying from 0% to 100% H2 in CH4 are run. Flame peak temperatures are kept constant for each series at 1840 K, 1940 K, and 2040 K, by varying diluent fractions in the fuel stream from 19 to 71 vol% N2. The temperatures are kept constant to eliminate the effect of varying thermal NO production with varying temperatures and, thus, we can study the chemical effect of having both fuels present. The measured values of NO range from 5.9 to 80.9 ppm. Good comparisons to numerical computations are found for the lowertemperature flames for each pure fuel, while there are some deviations for the hottest flames. Lower NO results are obtained in the experiments compared to the numerical computations for the mixture of both fuels. The results show that mixing H2 into CH4 will increase NO emissions versus burning them alone and diluted.


Articles with similar content:

Role of CO2 in the Soot Formation and Reduction Mechanisms in CH4 Flat Flame Doped with Toluene under O2/CO2 Environments
International Heat Transfer Conference 15, Vol.7, 2014, issue
Shunsuke Sugai, Ken Okazaki, Hirotatsu Watanabe
NUMERICAL SIMULATION OF LAMINAR DIFFUSION FLAME WITH FINITE RATE CHEMISTRY AND VARIABLE PROPERTY FORMULATION
Computational Thermal Sciences: An International Journal, Vol.4, 2012, issue 1
A. J. Bhowal, A. K. Chowdhuri, Bijan Kumar Mandal, S. Chakraborti
NUMERICAL INVESTIGATION OF BURNING AND EMISSION CHARACTERISTICS OF LAMINAR METHANE DIFFUSION FLAMES IN PREHEATED OXIDIZER
International Journal of Energy for a Clean Environment, Vol.11, 2010, issue 1-4
Thirumalachari Sundararajan, R. Sreenivasan, Vasudevan R. Raghavan
Superadiabatic Combustion in Porous Media: Wave Propagation, Instabilities, New Type of Chemical Reactor
International Journal of Fluid Mechanics Research, Vol.22, 1995, issue 2
Alexei V. Saveliev, Lawrence A. Kennedy
CHEMICAL KINETICS ANALYSIS FOR LIFTED TURBULENT JET FLAME USING MULTI-FLAMELET GENERATED MANIFOLD APPROACH
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Ashoke De, Venu G. Agarwal, Rohit Saini, Rakesh Yadav