ANALYTICAL MODEL FOR THE COMBUSTION OF COAL PARTICLES.

Farhang Shadman, James C. Cavendish

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A model for the combustion of coal particles is developed which accounts for the gasification and pyrolysis reactions throughout the particles, oxidation reactions at the particles' outer surface, distributed gas-phase reactions around the particles, and transport of heat and mass throughout the reaction zones. The model shows that the combustion of large particles is dominated by gasification and gas-phase reactions. As large particles burn and shrink, however, the mechanism changes to one dominated by surface oxidaton. This change in mechanism can be gradual or very rapid (even discontinuous) depending on the combustion conditions. The particle size at which this transition takes place decreases as the bulk gas temperature or oxygen concentration increase.

Original languageEnglish (US)
Pages (from-to)470-475
Number of pages6
JournalCanadian Journal of Chemical Engineering
Volume58
Issue number4
StatePublished - Aug 1980

Fingerprint

Coal
Analytical models
Gases
Gasification
Pyrolysis
Particle size
Oxygen
Oxidation
Temperature

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

ANALYTICAL MODEL FOR THE COMBUSTION OF COAL PARTICLES. / Shadman, Farhang; Cavendish, James C.

In: Canadian Journal of Chemical Engineering, Vol. 58, No. 4, 08.1980, p. 470-475.

Research output: Contribution to journalArticle

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