96/03590 Weathering of flame coal - Effect of time on properties and structure of coal, separated vitrite and cokes
- Publisher
- Elsevier Science
- Year
- 1996
- Weight
- 171 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0140-6701
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π SIMILAR VOLUMES
at room temperature. The mixture was added to water (500 ml) and the precipitated derivatives filtered. The acetylated sample was freeze-dried with benzene. The increase in solubility of the coal-derived liquids in benzene and chloroform owing to silylation and acetylation are shown in Tables 1 an
Previous publications indicate that the mechanical properties of metallurgical coke made from coal pr~odt1c4 in the Ostrava-KarvinB coal basin are significantly influenced by the coal mass properties-atomic ratio (H/O,,), vitrinite reflectance (% Rev) and inertinite content (y,; I). In the range of
Two Polish subbituminous coals, containing 76% and 82% C, were hydrogenated in a batch stirred autoclave at 400,430 and 46O"C, under 20 MPa hydrogen pressure and at contact times of 20, 60,90 and 120min, in the presence of a coal-derived recycle oil. No external catalyst was used. The filtered react