Emissions studies in a well-stirred reactor and applications to combustion modeling

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:427854

Zelina, J ^[1]; Ballal, D R ^[2]

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1. AlliedSignal Engines, Phoenix, AZ (United States)
2. Univ. of Dayton, OH (United States). Dept. of Mechanical and Aerospace Engineering

A 250-mL toroidal well-stirred reactor (WSR) was used to study the combustion and emissions characteristics in a well-mixed combustion system. In a WSR, the spatial temperature and species concentration profiles are uniform, and reaction rates are completely determined by chemical reaction and are not limited by fuel evaporation and mixing. Therefore, the WSR represents an efficient, highly stable, low-emissions advanced combustion system of the future. IN this paper, the authors describe the design of a WSR and investigate the combustion and pollutant emissions from a wide range of hydrocarbon fuels including JP-7, heptane, ethane, ethylene, propane and methane, as well as mixtures of hydrocarbons. CO emissions reached a minimum at {phi} {approx} 0.6, corresponding to flame temperatures of 1,600K. Kinetic modeling of the WSR using Chemkin-PSR with the Miller-Bowman mechanism and the AE PSR code in a simulated plug flow reactor (PFR) mode resulted in good predictions of temperature, as well as NO{sub x}, and CO concentrations. Finally, tests conducted at constant equivalence ratio and residence time demonstrated an appreciable increase in CO and a modest increase in NO{sub x} with an increase in (C/H) mole ratio.

• OSTI ID: 427854
• Report Number(s): CONF-961006--; ISBN 0-7918-1795-4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
AIR POLLUTION
BURNERS
CARBON MONOXIDE
COMBUSTION KINETICS
ETHANE
ETHYLENE
EXPERIMENTAL DATA
GAS TURBINES
HEPTANE
JET ENGINE FUELS
METHANE
NITROGEN OXIDES
PROPANE