Patent ID: 8424283

Claim:
A system of reducing the constituents within an exhaust stream, the system comprising: a turbomachine generating a total exhaust and having an inlet, a compressor, an external combustion system, an exhaust section, and a turbine section; an exhaust gas recirculation (EGR) flow modulation device that diverts an exhaust stream from the total exhaust exiting the turbomachine; and an EGR system integrated with the turbomachine and containing a scrubber that receives the exhaust stream containing constituents at a first level at a first temperature from the turbomachine exhaust section, lowers the temperature of the exhaust stream to below the saturation temperature of the exhaust stream, reduces the concentration of a constituent in the exhaust stream to a second level, sequesters and removes concentrated CO 2 from the exhaust stream, and outputs the exhaust stream at a second temperature, wherein the EGR system re-circulates the exhaust stream to the inlet of the turbomachine; and a heat exchanger upstream of the EGR system, the heat exchanger receiving the exhaust stream, reducing the temperature of the exhaust stream, and directing the exhaust stream to flow to an inlet portion of the scrubber.