COAL DRYING PROCESS

A single step process for removing moisture from low rank coal using in-situ generated thermal energy. The process comprises the steps of: (A) feeding the wet low rank coal at room temperature into a moving bed of hot coal at a temperature in the range of from about 200 deg C to about 300 deg C at a rate to maintain partial combustion of the coal at atmospheric pressure, (B) maintaining said coal bed in the presence of a gas at atmospheric pressure containing from about 5% to about 20% by volume of oxygen, whereby the in-situ heat generated by the combustion is absorbed by the wet coal being fed to the system and is effective for drying the coal to the desired level, and (C) separating the dried coal from the combustion zone, whereby the dry coal obtained is highly resistant to spontaneous combustion.

  • Corporate Authors:

    Suntech, Incorporated

    1608 Walnut Street
    Philadelphia, PA  USA  19103
  • Authors:
    • Seitzer, W
  • Publication Date: 1980-7-22

Media Info

  • Pagination: v.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00330450
  • Record Type: Publication
  • Source Agency: Energy Research Abstracts
  • Report/Paper Numbers: Patent 4,213,752
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM