| 摘要 |
The invention relates to a method for operating an IGCC power plant process having integrated CO2 separation. A process gas containing H2 and CO2 is separated into technically pure hydrogen and a fraction rich in CO2 by means of pressure swing adsorption (PSA), wherein the fraction rich in CO2 is released as PSA offgas by means of a pressure drop. The hydrogen that is generated is burned in at least one gas turbine utilized for generating electrical power, wherein the exhaust gas of the gas turbine is utilized for generating steam in a heat recovery boiler, said steam being expanded in a steam turbine process also utilized for generating electrical power. The PSA offgas is burned in a separate boiler using technically pure oxygen, wherein a smoke gas having a smoke gas temperature of greater than 1000° C. is generated. The smoke gas is utilized for superheating the steam fed into the steam turbine process and/or for generating a more pressurized steam for the steam turbine process. A superheated high-pressure steam having a pressure of greater than 120 bar and a temperature of greater than 520° C. is generated for the steam turbine process from the waste heat of the gas turbine and the waste heat of the smoke gas. |
