Flushing the exhaust gas recirculation lines of a gas turbine

摘要

A method and gas turbine are provided for the reliable purging of an exhaust gas recirculation line of the gas turbine with exhaust gas recirculation without the use of additional blow-off fans. A blow-off flow of the compressor is used for the purging of the exhaust gas recirculation line. The gas turbine can include at least one purging line which connects a compressor blow-off point to the exhaust gas recirculation line.

主权项

1. A method for the purging of an exhaust gas recirculation line of a gas turbine including a compressor, the method comprising:
operating the gas turbine at a purging speed; discharging blow-off air from the compressor; and introducing the blow-off air into the exhaust gas recirculation line for purging, wherein the introduction of the blow-off air includes:
introducing the blow-off air into the exhaust gas recirculation line;directing a first partial flow of the blow-off air in a direction of a second end of the exhaust gas recirculation line; anddirecting a second partial flow of the blow-off air in a direction of a first end of the exhaust gas recirculation line.