| 摘要 |
A method for reducing energy requirements of a CO2 capture system (300) comprises : contacting a flue gas stream (140) with a CO2 lean absorbent stream (150) in an absorber (130), thereby removing CO2 from the flue gas (140) and providing a CO2 rich absorbent stream (152); heating a first portion of the CO2 rich absorbent stream (152) using heat from the CO2 lean absorbent stream (150), and providing the heated first portion (204) of the CO2 rich absorbent stream (152) to a regenerator (160); providing a second portion (202) of the CO2 rich absorbent stream (152) to the regenerator, wherein the heated first portion (204) is hotter than the second portion (202) and the heated first portion (204) is provided to the regenerator at a lower elevation in the regenerator (160) relative to that of the second portion (202).
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