Patent ID: 7503178

Claim:
A thermal power plant with sequential combustion and reduced CO 2 emissions, which includes the following components, which are connected in series via in each case at least one flow passage: a combustion feed air compressor unit, a first combustion chamber, a high-pressure turbine stage, a second combustion chamber and a low-pressure turbine stage, it being possible for the second combustion chamber and/or the low-pressure turbine stage to be supplied with a cooling gas stream for cooling purposes, wherein there is a recirculation line which feeds at least some of the exhaust-gas stream emerging from the low-pressure turbine stage to a compressor unit, wherein there is a cooling line, which feeds at least some of the compressed exhaust-gas stream emerging from the compressor unit to the second combustion chamber and/or the low-pressure turbine stage as a cooling gas stream for cooling purposes, and wherein a CO 2 separation unit, which separates at least fractions of CO 2 out of the cooling gas stream, is provided in the cooling line.