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Baruah, Bimala P.
- Maceral Contents of Tertiary Indian Coals and their Relationship with Calorific Values
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International Journal of Innovative Research and Development, Vol 1, No 7Sp (2012), Pagination: 196-203Abstract
The petrographic composition of some high sulphur tertiary Indian coal samples is determined and their reactivity is predicted. The relationship between maceral contents and Gross Calorific Value (GCV) of these coal samples have been investigated by multi-variable regression analysis. The maceral analysis indicates that the North-East Indian (NE) coal samples have high vitrinite content (80.07% average), a moderate to low liptinite (10.23% average) and a low inertinite (9.3% average). The liptinite and inertinite contents were found to have a strong linear relationship (R2=0.9283 and R2= 0.9223). From this study, reasonable GCVs can be interpreted. These regression curves show a good fingerprint for energy calculations.Keywords
Macerals, Indian Coal, Petrography, Gross Calorific Value- Oxidative Desulphurization of North-east Indian Coals by Using Different Metal Ions/oxides as Catalyst
Abstract Views :125 |
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International Journal of Innovative Research and Development, Vol 1, No 7Sp (2012), Pagination: 214-220Abstract
The present communication reports a simple oxidative desulphurization technique for high sulphur coal by using performic acid in presence of various metal ions/oxides. This simple oxidation by per acids gave the desulphurization of Tirap coal up to 22.58 wt%, while in presence of various metal ions as catalysts, the oxidative desulphurization is found to be increased. Desulphurization is achieved up to the extent 24.59-39.51 % using various metal catalysts. Physico-chemical characteristics of raw and oxidized coal samples are determined and FT-IR and XRD studies of raw and treated samples have been reported. Formation of oxidized sulphur species (S=O and -SO2) is detected in FT-IR spectroscopy. The reaction mechanism of sulphur removal by metal ions/oxides have been also been discussed.- Sulfur Removal from Indian Coals by using Green Solvents
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