POWER GENERATION
Electricity can be generated using Underground Coal Gasification (UCG) syngas as feedstock by the following methods:
- Combustion in a Gas Turbine Generator (GTG)
- Combustion in a boiler to produce steam to drive a steam turbine
The main advantage of UCG syngas as feedstock for power generation, as opposed to solid coal, is that syngas can be used as feedstock for gas turbines allowing the combination of gas and steam cycles into combined cycles. The higher efficiency achieved by combined cycles compared to coal fired power stations not only means higher returns on investment but also lower greenhouse gas emissions.
Several companies have developed a range of gas turbine applications including Alstom, GE, Hitachi, Mitsubishi and Siemens.
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