Drying Brown Coal in Steam-Heated, Steam-Fluidized Beds

O. E. Potter, C. J. Beeby, W. J.N. Fernando, P. Ho

Research output: Contribution to journalReview ArticleResearchpeer-review

23 Citations (Scopus)

Abstract

Removal of moisture in steam-fluidized, mainly steam-heated, fluidized beds makes possible significant energy savings over conventional forms of large-scale drying. The systems are described and their application to brown coal is reviewed. In this application the use of the system to permit meeting diurnal variation in power-station output, and the use of triple-effect drying to minimise coal usage and to avoid the necessity of recovering in the turbines the energy in the steam from the last dryer are discussed. Moisture-equilibrium of brown coal in superheated steam is reported. To facilitate the rapid adoption of the systems proposed, studies are being made of heat-transfer to dried coal, of moisture equilibrium in pressurized and vacuum systems, and of the use of carrier solids for drying lump materials.

Original languageEnglish
Pages (from-to)219-234
Number of pages16
JournalDrying Technology
Volume2
Issue number2
DOIs
Publication statusPublished - 1 Jan 1983

Keywords

  • and Phrases
  • Filter
  • fluidized beds
  • heat transfer
  • MHD
  • moisture equilibrium
  • multiple-effect
  • particulate
  • pressurized
  • superheated

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