Patent ID: 8783043
Filing Date: 2014-07-22
Classification: F01K,F02C,F05D,F22B,F22G,Y02E

Abstract:
1. A combined cycle power generation system comprising: a steam turbine system; a combustion turbine system including a compressor, a combustion chamber and a gas turbine; a HRSG coupled between the combustion turbine and the steam turbine to generate steam with thermal energy received from the combustion turbine, the HRSG including a first stage configured to provide high pressure steam and a second stage configured to provide lower pressure steam; a first condenser coupled to transfer working fluid from a low pressure stage of the steam turbine system to the HRSG; a flow line connected between the HRSG and the combustion chamber of the turbine system to receive saturated steam created in the HRSG and pass steam into the combustion chamber; a superheater positioned in the flow line between the HRSG and the combustion chamber to generate superheated steam from the saturated steam and provide the superheated steam to the combustion chamber; and a second condenser configured in the flow line between either the first stage of the HRSG or the second stage of the HRSG and the superheater to (i) convert a portion of the steam in the flow line into liquid water and (ii) permit gravity flow of the liquid water back to the HRSG, the condenser reducing the amount of steam which must be transferred into the combustion chamber when transferring a given amount of carbon dioxide from the flow line into the combustion chamber.