method for operating a process from an igcc power plant with integrated co2 separation

摘要

patent: method for operating a process of an igcc power plant with integrated co-2 ~ separation. The present invention relates to a method for operating a process of an integrated co-separation separation igcc power plant. In this method a process gas containing h ~ 2 ~ and co ~ 2 ~, with adsorption under oscillating pressure (psa), is separated to form technically pure hydrogen, as well as a co-2 ~ rich fraction, wherein the Co2-rich fraction is released as psa offgas by a pressure drop. The generated hydrogen is burned in at least one gas turbine used to generate electric current, where the gas turbine exhaust gas is used to generate water vapor in a heat recovery boiler, which is expanded in a process. steam turbine which is also used to generate electric current. psa offgas is burned in a separate boiler with technically pure oxygen, producing a flue gas containing a flue gas temperature greater than 1000 198 c. The flue gas is used for overheating steam fed in the steam turbine process and / or for generating more pressurized steam for the steam turbine process. From the residual heat of the gas turbine and from the residual heat of the flue gas a superheated high pressure steam with a pressure greater than 12 mpa (120 bar) and a temperature greater than 520 is generated for the steam turbine process. 198 c.