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== CMM Utilisation Opportunities == | == CMM Utilisation Opportunities == | ||
| − | + | The major part of methane in coal mines is gas deliberating from the broken coal in the surroundings of the longwall and from dug part of the mine. Depending on the quality CMM can be divided into 3 classes of utilisation, as shown in the tabel below. | |
| + | {| border="1" | ||
| + | ! width="250px" | High-Quality Gas | ||
| − | + | > 50 % CH<sub>4</sub> | |
| − | + | ! width="250px" | Medium-Quality Gas | |
| − | ! width=" | + | |
| − | ! width=" | + | 25% < CH<sub>4</sub> < 50% |
| + | ! width="250px" | Low-Quality Gas | ||
| + | |||
| + | < 4% CH<sub>4</sub> | ||
|- | |- | ||
|• Natural gas pipelines | |• Natural gas pipelines | ||
| − | |||
| − | • Local distribution | + | • Vehicle fuel (CNG, LNG) |
| + | |||
| + | |||
| + | • Local distribution (CNG, LNG) | ||
|• Power generation | |• Power generation | ||
| Zeile 20: | Zeile 27: | ||
• Combined heat & power generation | • Combined heat & power generation | ||
| − | • Boiler fuel | + | • Boiler fuel |
| − | • Coal mine heating | + | |
| − | • Ventilation air heating | + | • Coal mine heating |
| − | • Coal drying | + | |
| − | • District heating | + | • Ventilation air heating |
| − | • Industrial applications | + | |
| − | • Fuel cells | + | • Coal drying |
| − | |• Thermal Oxidation | + | |
| − | • Catalytic Oxidation | + | • District heating |
| − | • Combustion air | + | |
| + | • Industrial applications | ||
| + | |||
| + | • Fuel cells | ||
| + | |||
| + | |• Thermal Oxidation | ||
| + | |||
| + | |||
| + | • Catalytic Oxidation | ||
| + | |||
| + | |||
| + | • Combustion air | ||
|} | |} | ||
| + | |||
| + | Of course, the high quality gases are also used instead of the medium quality gases. If CMM is used as a replacement of natural gas a chemical treatment is necessary to conzentrade the methane. | ||
Aktuelle Version vom 15. Juni 2012, 11:11 Uhr
CMM Utilisation Opportunities
The major part of methane in coal mines is gas deliberating from the broken coal in the surroundings of the longwall and from dug part of the mine. Depending on the quality CMM can be divided into 3 classes of utilisation, as shown in the tabel below.
| High-Quality Gas
> 50 % CH4 |
Medium-Quality Gas
25% < CH4 < 50% |
Low-Quality Gas
< 4% CH4 |
|---|---|---|
| • Natural gas pipelines
|
• Power generation
• Heat generation • Combined heat & power generation • Boiler fuel • Coal mine heating • Ventilation air heating • Coal drying • District heating • Industrial applications • Fuel cells |
• Thermal Oxidation
|
Of course, the high quality gases are also used instead of the medium quality gases. If CMM is used as a replacement of natural gas a chemical treatment is necessary to conzentrade the methane.
