Analiza termodynamiczna zeroemisyjnej elektrowni gazowo-parowej ze spalaniem tlenowym i sucha recyrkulacja spalin

This paper presents the zero-emission combined cycle power plant with oxy-combustion and dry flue gas recirculation in a gas turbine. Oxy-combustion in the gas turbine, which is a one of CO₂ capture technologies, thanks to the elimination of nitrogen from combustion process, leads to the production of flue gas containing mainly carbon dioxide and water vapor. This allows to limit the CO₂ separation process to removal of excess water from the flue gas, but on the other hand, the oxygen production process in the air separation unit is associated with significant energy consumption. The results of thermodynamic analysis of the power plant in a wide range of gas turbine compression rate and combustor outlet temperature, as well as the influence of the oxidant purity and energy consumption of the air separation unit on the efficiency of the power plant are presented.