Devolatilization of bituminous coals at medium to high heating rates

A high-volatile and a medium vclatile bituminous coal, size-graded between 53 and 63 μm, were devolatilized in a laboratory-scale laminar-flow furnace at 800–1400°C at heating rates of 1 × 10 4−5 × 10 4 °C/s. The weight loss was determined by both gravimetric and ash-tracer techniques. The experimen...

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Bibliographic Details
Published in:Combustion and flame 1986-03, Vol.63 (3), p.329-337
Main Authors: Jamaluddin, A.S., Truelove, J.S., Wall, T.F.
Format: Article
Language:English
Subjects:
Applied sciences
coal
combustion
Combustion of solid fuels
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
furnaces
modeling
Theoretical studies. Data and constants. Metering
thermal variables measurement
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Summary:A high-volatile and a medium vclatile bituminous coal, size-graded between 53 and 63 μm, were devolatilized in a laboratory-scale laminar-flow furnace at 800–1400°C at heating rates of 1 × 10 4−5 × 10 4 °C/s. The weight loss was determined by both gravimetric and ash-tracer techniques. The experimental results were well correlated by a two-competing-reactions devolatilization model. The model was also evaluated against data from captive-sample experiments at moderate heating rates of 250–1000°C/s. Heating rate was found to affect substantially the devolatilization weight loss.
ISSN:0010-2180
1556-2921
DOI:10.1016/0010-2180(86)90002-7