Patent ID: 8046986

Claim:
A method of reducing constituents within an exhaust stream, wherein the exhaust stream is generated by a turbomachine; the method comprising: diverting a portion of total exhaust stream, considered recirculated exhaust, generated by the turbomachine to an EGR system; opening a bypass modulation device to allow the remains of the total exhaust to discharge through a bypass stack; adjusting a flowrate of the recirculated exhaust, wherein an EGR flow conditioning device may apportion up to 35% of the total exhaust stream to become the recirculated exhaust stream; determining a pressure drop of the EGR system; operating the EGR flow conditioning device to adjust the flowrate in a manner that overcomes the pressure drop; selecting a constituent present in the recirculated exhaust stream from a list of constituents; operating a temperature condition device to cool the recirculated exhaust stream; operating a constituent reduction system (CRS) to reduce a concentration of the constituent; wherein the CRS operatively: determines a dew point temperature associated with the recirculated exhaust stream; cools the recirculated exhaust stream to a temperature below the dew point temperature; uses a scrubber to remove particulates of the constituent; wherein the scrubber injects a liquid to scrub the particulates out of the recirculated exhaust stream; determines an injection rate of the liquid, wherein the injection rate is function of a concentration of the constituent within the recirculated exhaust stream; determining whether the constituent is within a constituent range; and if the constituent is within the constituent range, then modulating at least one flow control device to allow for the recirculated exhaust stream to enter an inlet section of the turbomachine.