A Constant-Volume Bomb and Co-Flow Reactor Investigation of Ignition Phenomenon of Hydrocarbon Fuels in High Temperature Oxidizer

Yıl 2010, Cilt: 13 Sayı: 2, 43 - 49, 24.02.2010

R. K. Wilk Sebastian Werle Ryszard Wilk

Öz

The paper presents results of experimental studies on the methane and propane ignition process in various volumetric compositions of oxidizers heated to temperature higher than ignition point of analyzed fuels (HTAC conditions – High Temperature Air Combustion conditions). The increment of temperature DT and the ignition delay time t’ are parameters characterizing the process of ignition under these conditions. These parameters are the function of air excess ratio l, temperature of the oxidizer t_oxi and the volumetric composition of oxidizer z_i. In order to achieve the minimum ignition delay time t’ and the maximum increment of the temperature DT, the oxidizer temperature didn’t have to be maximized. There is an interval of t_oxi in which analyzed parameters reaches its extreme values.

Anahtar Kelimeler

high temperature air combustion, ignition, methane, propane

Kaynakça

• Bartok W., Sarofi m A.F., 1989, Fossil Fuel Combustion. A source book, John Wiley & Sons, New York.
• Cavaliere A., de Joannon M ., 2004, ”Mild combustion”, Progress in Energy and Combustion Science, Vol. 30, pp. 329-366.
• Milani A., 2001, “Diluted Combustion Technologies”, IFRF Combustion Journal, article number 200101.
• Schaffel N., Mancini M., Szl ę k A., Weber R., 2009, “Mathematical modeling of MILD combustion of pulverized coal”, Combustion and Flame, Vol. 156, pp. 1771-1784.
• Tsuji H., Gupta A.K., Hasegawa T., Katsuki M., Kishimoto K., Morita M., 2003, High temperature air Int. J. of Thermodynamics (IJoT) Vol. 13 (No. 2) / 49 combustion. From energy conservation to pollution reduction , CRC Press, 2003.
• Weber R., Smart J., van der Kamp W ., 2005, “ On the combustion of gaseous, liquid and solid fuels in high temperature preheated air”, Proc . Combust. Inst., Vol. 30, pp. 2623-2629.
• Werle S, Wilk R.K., 2008, “I dentification of selected parameters on the gaseous fuels autoignition process for various volumetric composition of high temperature air”, Proceedings of HiTACG, Thailand, 95
• Werle S., Wilk R.K., 2007, “Self-ignition of methane in high temperature air”, Chemi cal and Process Engineering, Vol. 28, pp. 399-412.
• Werle S., Wilk R.K., 2010, “Ignition of methane and propane in high-temperature oxidizers with various oxygen concentrations” , Fuel, DOI: 10.1016/j.fuel.2010.03.012.
• Wilk R.K., Szl ę k A., Misztal T., Malczyk K., Zajdel A., 2002, “Badania procesu spalania oleju lekkiego przy wysokiej temperaturze”, Arch iwum Spalania, Vol. 2, pp. 77-95 (in Polish)..
• Wilk R.K., 2002, Low emission combustion, Wydawnictwo Politechniki Ś l ą skiej, Gliwice.
• Wünning J.A., Wünning J.G., 1997, “Flameless oxidation to reduce thermal NO-formation , ” Prog. Energy Combust. 23, pp. 81-94.
• Yokomori T., Mochida S., Ar aake T., Maruta K., 2007, “Electrostatic probe measurement in a industrial furnace for high-temperature air conditions”, Combustion and Flame 150, pp. 369-379.