Patent ID: 8266883
Filing Date: 2012-09-18
Classification: F01D,F02C,F05D,Y02T

Abstract:
1. A method for starting-up a stoichiometric exhaust gas recirculation power plant arrangement, comprising the steps of: compressing ambient air into a compressed ambient gas flow with at least one main air compressor; delivering at least a first portion of the compressed ambient gas flow, with a compressed ambient gas flow rate, to a turbine combustor that is fluidly connected to the at least one main air compressor; providing an extraction conduit that is fluidly connected to a turbine compressor; venting the power plant by opening a vent, wherein the vent comprises at least one of the extraction conduit or an exhaust port, wherein the exhaust port is fluidly connected to a recirculation loop rotating a turbine shaft connecting a turbine to the turbine compressor at an ignition speed; delivering a fuel stream, having a fuel stream flow rate, to the turbine combustor for mixing with the at least a first portion of the compressed ambient gas flow from the at least one main air compressor and with at least a first portion of a recirculated gas flow from the turbine compressor to form a combustible mixture; burning the combustible mixture in the turbine combustor and thereby forming the recirculated gas flow and driving the turbine and the turbine compressor; recirculating the recirculated gas flow from the turbine to the turbine compressor using the recirculation loop; operating the turbine at a target operating speed, and, if necessary, accelerating the turbine to the target operating speed by adjusting the fuel stream flow rate and the compressed ambient gas flow rate; adjusting the fuel stream flow rate and the compressed ambient gas flow rate to reach substantially stoichiometric combustion; and extracting at least a second portion of the recirculated gas flow using the extraction conduit.