Patent ID: 8448418
Filing Date: 2013-05-28
Classification: F02C

Abstract:
1. A method of controlling an exhaust stream, wherein the exhaust stream is generated by a turbomachine, the method comprising: operating a gas turbine that comprises an inlet system; wherein the gas turbine operatively generates the exhaust stream; operating a heat recovery steam generator (HRSG) installed downstream of the gas turbine, wherein the exhaust stream flows from the gas turbine to an inlet portion of the HRSG; operating at least one exhaust gas recirculation (EGR) system comprising: at least one EGR flow conditioning device and at least one flow control device; wherein the EGR system reduces the concentration of at least one constituent within the exhaust stream; and operating an EGR control system for controlling a composition of the exhaust stream flowing through the EGR system, wherein steps performed by the EGR control system comprise: wherein the EGR control system operatively determines a composition of the exhaust stream.