METHOD AND SYSTEM FOR SEPARATING CO2 FROM N2 AND O2 IN A TURBINE ENGINE SYSTEM

摘要

A method of separating carbon dioxide (CO₂) from nitrogen (N₂) and oxygen (O₂) within a turbine engine system includes, in an exemplary embodiment, directing an air stream into an air separation unit (ASU), separating N₂ from the air stream in the ASU to form an oxygen (O₂) rich air stream, and directing the O₂ rich air stream to the combustor to mix with a fuel for combustion forming hot combustion gases, containing O₂ and CO₂, which are used to rotate the turbine. The method also includes directing turbine expander exhaust gases to a heat recovery steam generator (HRSG) to create steam, directing exhaust from the HRSG to a condenser to separate water from a mixture of O₂ and CO₂ gases, and directing the mixture of O₂ and CO₂ gases to a separation system where the CO₂ is separated from the O₂ gases and removed from the separation system.