Direct sampling and characterization of gaseous species responsible for fireside corrosion in fossil fuel-fired systems. Fourth quarterly progress report, January 1--March 31, 1977

Technical Report · Mon Jul 18 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5327593· OSTI ID:5327593

Milne, T. A.; Beachey, J. E.; Greene, F. T.

It was found necessary to add extra O/sub 2/ to air to sustain lean or stoichiometric flames of 10 to 20 ..mu..m Freeport Seam Coal on 6.3 cm diameter burners. With 28 percent O/sub 2/, lean flames burned satisfactorily on both inverted and upright burners. Coal-air and coal-28 percent O/sub 2/-N/sub 2/ flames were sampled by direct free-jet sampling using an 0.020 in. diameter sonic orifice with an automatic cleaning device. Beam intensities were comparable to those with gaseous flames. However, noise from coal-flame particulates was serious. During a series of coal-flame sampling experiments, in both inverted and upright configurations, the particle noise increased 1,000-fold, making detection of alkali species impossible. Corrective measures to eliminate the particle-noise problem are discussed.

• Research Organization: Midwest Research Inst., Kansas City, MO (USA)
• OSTI ID: 5327593
• Report Number(s): FE-2288-16
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
BEAMS
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
ENERGY SOURCES
FLAMES
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
MASS SPECTROSCOPY
MOLECULAR BEAMS
NOISE
OXIDATION
PARTICLES
POWER PLANTS
SAMPLING
SPECTROSCOPY
THERMAL POWER PLANTS