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Effect of inlet temperature on the performance of a catalytic reactor

Technical Report ·
OSTI ID:6550797
A 12-cm diameter by 15-cm long catalytic reactor was tested with No. 2 diesel fuel in a combustion test rig at inlet temperatures of 700, 800, 900, and 1000/sup 0/K. Other test conditions included pressures of 3 and 6 x 10/sup 5/ Pa, reference velocities of 10, 15, and 20 m/s, and adiabatic combustion temperatures in the range 1100 to 1400/sup 0/K. The combustion efficiency was calculated from measurements of carbon monoxide and unburned hydrocarbon emissions. Nitrogen oxide emissions and reactor pressure drop were also measured. At a reference velocity of 10 m/s, the CO and unburned hydrocarbons emissions, and, therefore, the combustion efficiency, were independent of inlet temperature. At an inlet temperature of 1000/sup 0/K, they were independent of reference velocity. Nitrogen oxides emissions resulted from conversion of the small amount (135 ppM) of fuel-bound nitrogen in the fuel. Up to 90 percent conversion was observed with no apparent effect of any of the test variables. For typical gas turbine operating conditions, all three pollutants were below levels which would permit the most stringent proposed automotive emissions standards to be met. The pressure drop increased linearly with reference velocity and decreased slightly as the inlet temperature was raised. Pressure drop increased linearly with velocity to a maximum value of 1.5 percent at a reference velocity of 20 m/s.
Research Organization:
National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
DOE Contract Number:
EC-77-A-31-1040
OSTI ID:
6550797
Report Number(s):
DOE/NASA/1040-78/3; NASA-TM-78977
Country of Publication:
United States
Language:
English

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Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103 -- Internal Combustion Engines-- Turbine
330700* -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION CONTROL
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC CONVERTERS
CHALCOGENIDES
COMBUSTORS
EQUIPMENT
EXHAUST GASES
GAS TURBINES
GASEOUS WASTES
HYDROCARBONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PRESSURE DEPENDENCE
PRESSURE GRADIENTS
TEMPERATURE DEPENDENCE
TURBINES
TURBOMACHINERY
VEHICLES
WASTES