Power plant operating method, involves expanding combustion exhaust gas from afterburner, and discharging oxygen removed from combustion exhaust gas from pre-burner by sweep gas that is inert gas

摘要

The method involves burning combustion exhaust gas with reduced oxygen content with a fuel gas downstream of an oxygen-removal device (11) in an afterburner (9) of a burner arrangement. The exhaust gas is fed from the afterburner to a turbine and is expanded from the afterburner in the turbine. Oxygen removed from the exhaust gas is discharged from the pre-burner by a sweep gas that is an inert gas. An independent claim is also included for a power plant useful for power generation.