| 摘要 |
A method and system (20) 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 (21) with a lean amino-silicone absorbent in an absorber (25), 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 (26) comprising unreacted amino-silicone absorbent and solid carbamates resulting from the reaction of the absorbent with carbon dioxide; heating the slurry in a desorber (40) to a temperature sufficient to effectively strip the carbon dioxide from the carbamates; regenerating lean amino-silicone absorbent as a recycle stream (47) back to the absorber; and sequestering the desorbed carbon dioxide gas. |
