Fragmentation and swelling of various coals during devolatilization in a fluidized bed

Dragoljub Dakič, Geert van der Honing, M. Valk

Research output: Contribution to journalArticleAcademic

73 Citations (Scopus)
240 Downloads (Pure)

Abstract

The combustion rate of large coal particles in a fluidized bed is to a large extent controlled by the external diffusion. This rate will depend on the particle diameter. There are several processes that affect this diameter: the combustion process itself; attrition; fragmentation; and swelling. The last two processes can cause large diameter changes in a relatively short period, mainly during devolatilization. The experiments reported in this paper are aimed at finding a simple relationship between some properties of the parent coal particles, and the fragmentation and swelling during devolatilization.
Original languageEnglish
Pages (from-to)911-916
JournalFuel
Volume68
Issue number7
DOIs
Publication statusPublished - 1989

Keywords

  • Swelling
  • Fluidized beds
  • Devolatilization

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