Fluidization characteristics of power-plant fly ashes and fly ash-charcoal mixtures. Metadata

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Title

  • Main Title Fluidization characteristics of power-plant fly ashes and fly ash-charcoal mixtures.

Creator

  • Author: Nguyen, C. T.
    Creator Type: Personal

Publisher

  • Name: Ames Laboratory
    Place of Publication: Iowa

Date

  • Creation: 1980-03-01

Language

  • English

Description

  • Content Description: As a part of the continuing research on aluminum recovery from fly ash by HiChlor process, a plexiglass fluidization column system was constructed for measurement of fluidization parameters for power-plant fly ashes and fly ash-charcoal mixtures. Several bituminous and subbituminous coal fly ashes were tested and large differences in fluidization characteristics were observed. Fly ashes which were mechanically collected fluidized uniformly at low gas flow rates. Most fly ashes which were electrostatically precipitated exhibited channeling tendency and did not fluidize uniformly. Fluidization characteristics of electrostatically collected ashes improve when the finely divided charcoal powder is added to the mixture. The fluidization of the mixture was aided initially by a mechanical stirrer. Once the fluidization had succeeded, the beds were ready to fluidize without the assistance of a mechanical action. Smooth fluidization and large bed expansion were usually observed. The effects of charcoal size and aspect ratio on fluidization characteristics of the mixtures were also investigated. Fluidization characteristics of a fly ash-coal mixture were tested. The mixture fluidized only after being oven-dried for a few days.
  • Physical Description: Pages: 102

Subject

  • Keyword: Aluminium
  • Keyword: Elements
  • Keyword: Aerosol Wastes
  • Keyword: Recovery
  • Keyword: Chlorination
  • STI Subject Categories: 32 Energy Conservation, Consumption, And Utilization
  • STI Subject Categories: 01 Coal, Lignite, And Peat
  • Keyword: Fluidization
  • Keyword: Halogenation
  • Keyword: Metals
  • Keyword: Waste Product Utilization
  • Keyword: Fossil-Fuel Power Plants
  • STI Subject Categories: 320305 -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
  • Keyword: Fly Ash
  • Keyword: Chemical Reactions
  • Keyword: Thermal Power Plants
  • Keyword: Wastes 010800* -- Coal, Lignite, & Peat-- Waste Management
  • Keyword: Power Plants

Source

  • Other Information: Thesis

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Thesis or Dissertation

Format

  • Text

Identifier

  • Report No.: IS-T-880
  • Grant Number: W-7405-ENG-82
  • DOI: 10.2172/5604125
  • Office of Scientific & Technical Information Report Number: 5604125
  • Archival Resource Key: ark:/67531/metadc1092830

Note

  • Display Note: Dep. NTIS, PC A06/MF A01.
  • Display Note: [MS Thesis; 40 references]