Evaluation of a rectangular opposed-jet burner for pulverized-coal diffusion-flame studies

Conference · Thu Apr 01 04:00:00 EST 1982

OSTI ID:5186783

Zghoul, A M; Comstock, R N; Grosshandler, W L

An experimental facility which consisted of an opposed-flow burner, a fluidized-bed particle feeder, and analyzers for particle velocity and gas composition determination, was developed for performing pulverized-coal diffusion-flame studies. The goals of these studies were to determine the extent to which the flame is 2-dimensional under actual experimental condition and to assess whether or not the rectangular opposed flow diffusion-flame (OFDF) may be a useful experimental tool for studying the combustion of pulverized coal. The design and operation of the test facilities are described. The test results showed that: the rectangular OFDF burner provides a long pathlength over which the temperature and composition remain constant, thus making it ideal for line-of-sight optical measurements; the temperature and composition of stable species varies almost exclusively with the distance perpendicular to the flame front, and the structure is similar to that of an axisymmetric OFDF; the flame is sensitive to disturbances introduced by temperature and gas sampling probes; steady particle flow in a low velocity OFDF is difficult to attain; fluctuations about a steady mean are enhanced by particles which are distributed in size; and to properly characterize the burning of pulverized coal in an OFDF configuration, it will be necessary to measure simultaneously both particle size and velocity in situ under hot flow conditions. (LCL)

• Research Organization: Washington State Univ., Pullman (USA). Dept. of Mechanical Engineering; Utah Univ., Salt Lake City (USA)
• DOE Contract Number: FG22-80PC30216
• OSTI ID: 5186783
• Report Number(s): CONF-820403-3; ON: DE82009791
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALKANES
BURNERS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL FINES
COMBUSTION
COMBUSTION KINETICS
DATA
DESIGN
EXPERIMENTAL DATA
FLAME PROPAGATION
FLAMES
HYDROCARBONS
INDUSTRIAL PLANTS
INFORMATION
KINETICS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OPERATION
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PROPANE
REACTION KINETICS
TEMPERATURE DISTRIBUTION
TEST FACILITIES
THERMOCHEMICAL PROCESSES