IGCC power plant having flue gas recirculation and flushing gas

Disclosed is a method for operating an IGCC power plant, wherein the coal gas from a gasifier, comprising CO and hydrogen, is supplied to at least one shift stage, wherein this is converted primarily into CO2 and hydrogen and the coal gas is subjected to at least one gas cleaning step. The coal gas...

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Bibliographische Detailangaben
Hauptverfasser:	BLUM LUDGER, MENZER REINHARD, RIENSCHE ERNST
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMBUSTION ENGINES COMPOUNDS THEREOF CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES GAS-TURBINE PLANTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 INORGANIC CHEMISTRY LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY METHODS OF STEAM GENERATION NON-METALLIC ELEMENTS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION STEAM ACCUMULATORS STEAM BOILERS STEAM ENGINE PLANTS STEAM ENGINES STEAM GENERATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	Disclosed is a method for operating an IGCC power plant, wherein the coal gas from a gasifier, comprising CO and hydrogen, is supplied to at least one shift stage, wherein this is converted primarily into CO2 and hydrogen and the coal gas is subjected to at least one gas cleaning step. The coal gas is conducted over a membrane, which at least partially selectively separates the hydrogen from the coal gas. In order to achieve driving potential in the membrane, a flushing gas is used on the permeate side. The hydrogen depleted retentate is fed to a CO2 conditioning process, while the separated hydrogen is fed together with the flushing gas to a gas turbine as fuel gas. The flushing gas used for the membrane is a component of the waste gas produced in the gas turbine after the waste gas has left the waste heat recovery boiler, which is connected downstream of the gas turbine. In the power plant, the gas turbine also functions as a means for providing the flushing gas. The power plant comprises a line from the waste heat recovery boiler connected downstream of the gas turbine to the permeate side of the membrane.