POWER-GENERATION METHOD USING COMBINED GAS AND STEAM TURBINES

摘要

The invention concerns a method of power generation using a so-called COGAS (combined gas and steam) turbine installation, the aim being to improve the method with regard to the initial costs and energy consumption so that power can be generated as cheaply as possible. This is achieved by virtue of the fact that air (5) taken from the surrounding atmosphere is split into an essentially oxigen-containing stream (7) and an essentially nitrogen-containing stream (6) and the two streams fed further at approximately atmospheric pressure. The essentially nitrogen-containing stream (6) is mixed with an air stream (10) to form a mixed nitrogen/air stream (11) and the mixed-gas stream thus produced is brought to combustion-chamber pressure in the compressor (107) of the gas turbine (105), the combustion of the combustion gases in the combustion chamber (164) of the gas turbine being carried out with the greater part of this compressed mixed-gas stream.