Influence of demineralization and depolymerization on coal extractability
β Scribed by S.R. Moinelo; A.B. Garcia; R. Menendez; J. Bermejo
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 274 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0378-3820
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π SIMILAR VOLUMES
Swelling of hvB coal by vapour of the solvents pyridine, tetrahedrofuran, dimethylformamide and methanol was carried out. Vapour-saturated coals were extracted using selected solvents and extract yields for swollen and fresh coals were compared. It is found that some solvents can block pathways to s
Hg). Soxhlet extraction of the residue with pyridine was followed by evaporation of the pyridine extracts as described above. The amount of coal converted to a pyridinesoluble product by the heat/tetralin treatment was 97% on a maf basis. The composition of the pyridine-soluble conversion product in