INTEGRATED CO2 PHASE CHANGING ABSORBENT FOR CO2 SEPARATION SYSTEM

摘要

A method and system for removing carbon dioxide from a power plant exhaust (such as a power plant, coal boilers, natural gas combined cycle plants or a gas turbine engine exhaust), where the method includes the steps of contacting the exhaust gas with a lean amino-silicone absorbent in an absorber, with the absorbent being sufficient in amount and concentration to react with a substantial portion of the carbon dioxide present in the exhaust gas; forming a liquid/solids slurry comprising unreacted amino-silicone absorbent and solid carbamates resulting from the reaction of the absorbent with carbon dioxide; heating the slurry in a desorber to a temperature sufficient to effectively strip the carbon dioxide from the carbamates; regenerating lean amino-silicone absorbent as a recycle stream back to the absorber; and sequestering the desorbed carbon dioxide gas.