USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS Metadata

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Title

  • Main Title USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS

Creator

  • Author: Levy, Edward K.
    Creator Type: Personal
  • Author: Sarunac, Nenad
    Creator Type: Personal
  • Author: Zhang, Wei
    Creator Type: Personal

Contributor

  • Sponsor: United States
    Contributor Type: Organization

Publisher

  • Name: Lehigh University (United States)
    Place of Publication: United States

Date

  • Creation: 2004-10-01

Language

  • English

Description

  • Content Description: This is the seventh Quarterly Report for this project. The background and technical justification for the project are described, including potential benefits of reducing fuel moisture, prior to firing in a pulverized coal boiler. Coal drying experiments were performed with lignite and Powder River Basin coals to determine the effects of inlet air moisture level on the equilibrium relationship between coal moisture and exit air relative humidity and temperature. The results show that, for lignite, there is a slight dependence of equilibrium moisture on inlet humidity level. However, the equilibrium relationship for PRB coal appears to be independent of inlet air humidity level. The specific equilibrium model used for computing lignite coal dryer performance has a significant effect on the prediction accuracy for exit air relative humidity; but its effects on predicted coal product moisture, exit air temperature and specific humidity are minimal. Analyses were performed to determine the effect of lignite product moisture on unit performance for a high temperature drying system. With this process design, energy for drying is obtained from the hot flue gas entering the air preheater and the hot circulating cooling water leaving the steam condenser. Comparisons were made to the same boiler operating with lignite which had been dried off-site.
  • Physical Description: 36 pages

Subject

  • Keyword: Powder River Basin
  • Keyword: Boilers
  • Keyword: Forecasting
  • Keyword: Air Heaters
  • STI Subject Categories: 01 Coal, Lignite, And Peat
  • Keyword: Drying
  • Keyword: Steam Condensers
  • Keyword: Humidity
  • Keyword: Coal
  • Keyword: Power Plants
  • Keyword: Flue Gas
  • Keyword: Moisture
  • Keyword: Lignite
  • Keyword: Accuracy

Source

  • Other Information: PBD: 1 Oct 2004

Collection

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

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Grant Number: FC26-03NT41729
  • DOI: 10.2172/835590
  • Office of Scientific & Technical Information Report Number: 835590
  • Archival Resource Key: ark:/67531/metadc785746

Note

  • Display Note: OSTI as DE00835590
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