Patent ID: 6684643
Filing Date: 2004-02-03
Classification: F01K,F02C,F05D

Abstract:
A process for the operation of a gas turbine plant with CO2 as the working medium, in which, in at least one combustion chamber hydrocarbons are combusted in a CO2 atmosphere enriched with oxygen to flue gases,where the flue gases comprise CO2 and H2O and the flue gases are expanded within a turbine stage following the at least one combustion chamber, the flue gases are then compressed in a compressor stage and at least partially condensed in a following condenser, so that at least a portion of the CO2 and H2O is liquefied and partially drawn off together with uncondensed flue gas components, such that a main portion, not drawn off, of CO2 is compressed by means of a pump unit, preheated in at least one recuperator stage, and is again supplied to the combustion chamber, wherein the main portion of CO2 compressed by the pump unit is pre-expanded to a combustion pressure at which the main portion of CO2 is supplied for combustion to the combustion chamber, wherein the combustion pressure is between 70 and 100 bar.