Gas and steam turbine plant with feedwater flow-part-deaerators

摘要

The present invention relates to a method for operating a gas and steam turbine plant (1), in which in an associated waste-heat steam generator (6) which in the expanded working medium of an associated gas turbine, heat contained for the production of steam for a corresponding steam turbine (3) with at least one low-pressure part (9) and a high-pressure part (7) is used, the low-pressure part (9) in the waste-heat steam generator (6) has a low pressure stage (14) with a low-pressure drum (48) is associated, wherein in the water or steam dissolved gases, essentially of steam for the low-pressure part (9) from the low-pressure drum (48) are degassed and the production of steam in the low-pressure drum (48) for regulation of the degassing is changed by that amount of heat within the waste-heat steam generator (6) is displaced. The present invention also relates to a gas and steam turbine plant (1).