✦ LIBER ✦

Combustion rates of lignite char by TGA

✍ Scribed by Mihir M. Patel; Dana T. Grow; Brian C. Young

Book ID: 103096439
Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 658 KB
Volume: 67
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(88)90257-8

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✦ Synopsis

The rate ofcombustion of size-graded (7%90pm) Beulah (ND) lignite char was measured using TGA over a range of oxygen concentrations (5 to 20%), and at temperatures between 598 and 923 K. The activation energy in the chemical rate controlled zone was 120kJ mol-', and the transition to film diffusion control occurred at 700 K. No region of pore diffusion control was indicated by Arrhenius plots. Pyrolysis conditions were found to have a notable influence on the activation energy.

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