Supercritical gas extraction of Polish brown coals

Properties of nine selected samples of Polish brown coals from both strip mines and perspective deposits varying in lithotype have been determined. This involved technical analysis of the elementary, group and petrographie compositions. The coals were extracted with supercritical toluene at 410 °C a...

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Bibliographic Details
Published inFuel (Guildford) Vol. 70; no. 12; pp. 1421 - 1425
Main Authors Stolarski, Marek, Szczygieł, Jerzy
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.12.1991
Elsevier
Subjects
Applied sciences
brown coal
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
gas extraction
Solid fuel processing (coal, coke, brown coal, peat, wood, etc.)
supercritical
Poland
Europe
brown coal
supercritical
gas extraction
Lignite
Carbochemistry
Toluene
Supercritical solvent
Chemical composition
Yield
Humic acids
Solvent extraction
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Summary:Properties of nine selected samples of Polish brown coals from both strip mines and perspective deposits varying in lithotype have been determined. This involved technical analysis of the elementary, group and petrographie compositions. The coals were extracted with supercritical toluene at 410 °C and 13 M Pa. The humic acid content and humodetrinite content were found to be well correlated with the yield of coal extract. The optimal conditions of gas extraction for a selected coal sample were determined.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(91)90008-X