Patent ID: 8056318

Claim:
A system for reducing sulfur oxides (SOx) within at least one an exhaust stream generated by at least one a turbomachine, the system comprising: at least one turbomachine comprising: an inlet, a compressor, an external combustion system, and a turbine section; which operatively produces the exhaust stream; a heat recovery steam generator (HRSG) installed downstream of the at least one turbomachine, wherein the exhaust stream flows from the at least one turbomachine to an inlet portion of the HRSG; an EGR damper located downstream of the at least one turbomachine, wherein the EGR damper comprises structure for diverting the exhaust stream; an exhaust gas recirculation (EGR) system integrated with the at least one turbomachine and fluidly located downstream of the EGR damper, wherein the EGR system comprises at least one damper door, a pollution control device, at least one EGR fan and an upstream heat exchanger, wherein operatively the EGR system: receives the exhaust stream at a first temperature from the at least one turbomachine; wherein the exhaust stream comprises SOx at a first level; reduces a temperature of the exhaust stream to below a saturation temperature so that constituents condense out of the exhaust stream; and utilizes the pollution control device to reduce the SOx to a second level; wherein the pollution control device uses sea water to remove SOx compounds from the exhaust stream; and directs the exhaust stream towards the inlet at a second temperature; wherein the system recirculates the exhaust stream exiting the EGR system to the inlet of the at least one turbomachine; wherein the upstream heat exchanger is located upstream of the at least one EGR fan and wherein the exhaust stream flows from an outlet portion of the HRSG to an inlet portion of the upstream heat exchanger.