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
Year: 1977
Type: report
Abstract: 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.
DOI: 10.2172/5327593
Authors: T. Milne, J. Beachey, F. Greene
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
OpenAlex ID: W264365296