Carbon Capture is one of the features of a new type of natural gas-based turbine electricity generation based on the Allam Cycle. A demonstration 50 mW system came online in Texas, USA last year and there is a proposal for a future 300 mW plant in New Zealand.
The system relies on burning natural gas with pure oxygen at high pressure in a combustor, producing super critical CO2 feeding into a conventional type of turbine at 300 bar pressure and 1150 degrees C temperature. The output of the turbine is completely recovered and most of it is ‘recuperated’ and fed back into the oxygen and natural gas mixture in the combustor. Only a relatively small amount of CO2 is not reused, but it is fully captured and there are no emissions of gas to the atmosphere. Water is also an output.
www.ipcc.ch/report/ar5/wg1/ www.ipcc.ch/sr15/download/ www.ipcc.ch/report/srccl/