Fremgangsmåde til fjernelse og genvinding af CO2 fra en afgas

• Main Authors: EIMER, DAG, ARNE, AASEN, KNUT, INGVAR
• Format: Patent
• Language: Danish
• Published: 15.08.2011
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; CHEMISTRY; COMBUSTION ENGINES; COMPOUNDS THEREOF; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INORGANIC CHEMISTRY; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; WEAPONS

The present invention relates to a method for removing and recovering CO2 from exhaust gas from a gas turbine based electric power and heat generation process (a main power process) by chemical absorption and desorption for deposition of CO2 as convenient at the location. The exhaust gas from said main power process is cooled before being fed to a secondary gas turbine based power and heat generation process (a secondary power process) where said exhaust gas is compressed to elevated pressure and used as oxidant in a secondary gas turbine combustion chamber in said secondary power process. The resulting hot exhaust gas from said secondary process is further fed to a turbine connected to an electric power generator where the exhaust gas is depressurised to close to ambient pressure before entering a heat recovery process where the exhaust gas is cooled and further fed to a CO2 separation process for capturing of CO2.