文档介绍：Coal Mine Gas - Experience - Drivers & Barriers
Gerhard Klammer
CityPlan - Prag,
2
GE Energy Jenbacher gas engines Coal Mine Gas
Safety & Environmental Issues
Hazardous situations caused by frequent coal mine gas explosions.
GWP of Methane is 21 times more reactive than carbon dioxide. Creating adverse impacts on the ozone and contributing to increased smog formation and global warming.
Coal mine gas can substitute coal in residential use and as a fuel for power generation.
CMM utilization can improve (finance) Mine safety.
CityPlan - Prag,
3
GE Energy Jenbacher gas engines Coal Mine Gas
Coal Mine Methane Utilization with Gas Engines
Electrical energy generated can be utilized in the coal mine or fed into the public power grid
Thermal energy can be used for heating purposes on-site or fed into a district heating system
Improving safety issues in coal mines (avoiding explosions)
Positive environmental impact
Potential to generate carbon credits through CDM projects by avoiding liberation of methane (CH4) into the atmosphere
CityPlan - Prag,
4
GE Energy Jenbacher gas engines Coal Mine Gas
Coal Mine Methane – Unexploited Source of Energy
Approx. 6 - 7% of the global CH4 e from hard coal mining*)
These are approx. Billion m³CH4/year
only approx. 6% are currently used, the rest is released unburned
*) Source: OECD/IEA
**) based on electrical efficiency 40%; Energy Mix Germany 1996; 8,000 hrs/y
kWh coal mine gas => 1 kWhel
kWh coal mine gas = kg CH4
GWPCH4 = approx. 21
=> kg CO2 equivalent
=> kg/kWhel CO2 reduction by CHP with coal mine gas
1 MWel from coal mine
=> approx. 34,000 t CO2/y
reduction potential**)
Utilization of Coal Mine Methane with Gas Engines
Coal Mine Gas: Properties, Characteristics
Impact for utilization in gas engines
Examples
Drivers & Barriers
CityPlan - Prag,
6
GE Energy Jenbacher gas engines Coal Mine Gas
Coalbed Methane (CBM)
coal mine gas fr