Devolatilization of bituminous coals at medium to high heating rates

✍ Scribed by A.S. Jamaluddin; J.S. Truelove; T.F. Wall

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 371 KB
• Volume: 63
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(86)90002-7

✦ Synopsis

A high-volatile and a medium volatile bituminous coal, size-graded between 53 and 63 ~tm, were devolatilized in a laboratory-scale laminar-flow furnace at 800-1400°C at heating rates of 1 x 104-5 × 104 *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.