Upgrading of Low Rank Coal by a Combined Process of Vacuum Drying and Tar Coating

Upgrading of Low Rank Coal by a Combined Process of Vacuum Drying and Tar Coating

An upgrading process for Indonesian low rank coal and Australian brawn coal was developed to produce a dry upgraded coal which is comparable with a bituminous coal. The upgrading consisted of a combination of vacuum drying and tar coating processes. This treatment has enabled us to prepare a upgrade...

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Veröffentlicht in:Coal preparation (New York, N.Y.) N.Y.), 1999-12, Vol.21 (1), p.71-81
Hauptverfasser: USUI, HIROMOTO, TATSUKAWA, TAKAFUMI, SAEKI, TAKASHI, KATAGIRI, KOHTARO
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Brown coal
Coal and derived products
Energy
Exact sciences and technology
Fuels
Low rank coal
Mechanical preparation
Processing
tar coating
upgrading
vacuum drying
Wood. Peat. Brown coal
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Zusammenfassung:An upgrading process for Indonesian low rank coal and Australian brawn coal was developed to produce a dry upgraded coal which is comparable with a bituminous coal. The upgrading consisted of a combination of vacuum drying and tar coating processes. This treatment has enabled us to prepare a upgraded coal with the heating value of more than 6500 kcal/kg. The maximum temperature and pressure of the upgrading process were 300°C and 0.5 MPa, respectively. The feasibility study for the newly developed upgrading process was done. The price of upgraded coal was estimated as comparable with or a little cheaper than the price of bituminous coal.
ISSN:0734-9343
1545-5831
DOI:10.1080/07349349908945609