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US 2015/0089951 A1Published application
Power generation and co2 capture with turbines in series
AssigneeExxonMobil Research and Engineering Company
InventorsTimothy A. Barckholtz, Frank H. Hershkowitz, Paul J. Berlowitz
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Abstract
In various aspects, a method for producing electricity by operating two or more turbines in series is provided. The method can include introducing, at least part of, the exhaust from an upstream turbine into a combustion chamber of a downstream turbine. In one aspect, exhaust from the upstream turbine is introduced into the downstream turbine's combustion chamber via the downstream turbine's compression chamber.
Claims20
A method for producing electricity, the method comprising:
- introducing a first oxygen stream and a first combustion fuel stream into a combustion chamber of a first combustion turbine;
- generating electricity and a first exhaust gas by combusting the first combustion fuel stream in the first combustion turbine, the first exhaust gas having first exhaust concentration of O2 and a first exhaust concentration of CO2;
- introducing at least about 50 mol % of the O2 and at least about 50 mol % of the CO2 from the first exhaust gas into a combustion chamber of a second combustion turbine;
- introducing a second combustion fuel stream into the combustion chamber of the second combustion turbine;
- generating electricity and a second exhaust gas by combusting the second combustion fuel stream in the second combustion turbine, the second exhaust gas having second exhaust concentration of O2 and a second exhaust concentration of CO2, a ratio of the second exhaust concentration of CO2 to the first exhaust concentration of CO2 being at least about 1.3:1;
- and
- separating CO2 from at least a portion of the second exhaust gas.
4 more elements
Dependencies are inferred from the claim text.