Carbon dioxide recovery and power generation

Details Carbon dioxide recovery and power generation Carbon dioxide recovery and power generation

B - Operations, Transporting

01

D

B01D 53/62 (2006.01) B01D 53/14 (2006.01)

Patent

CA 2535331

To provide a carbon dioxide recovery system capable of suppressing reduction in turbine output at the time of regenerating an absorption liquid with carbon dioxide absorbed therein, a power generation system using the carbon dioxide recovery system, and a method for these systems. The carbon dioxide recovery system including: a carbon dioxide absorption tower (18) which absorbs and removes carbon dioxide from a combustion exhaust gas of a boiler (1) by an absorption liquid; and a regeneration tower which heats and regenerates a loaded absorption liquid with carbon dioxide absorbed therein, is characterized in that the regeneration tower (24) is provided with plural loaded absorption liquid heating means (41, 42) in multiple stages, which heat the loaded absorption liquid and remove carbon dioxide in the load absorption liquid, in that a turbine (8) driven and rotated by steam of the boiler is provided with plural lines (44, 45) which extract plural kinds of steam with different pressures from the turbine and which supply the plural kinds of steam to the plural loaded absorption liquid heating means as their heating sources, and in that the plural lines are connected to make the pressure of supplied steam increased from a preceding stage (41) of the plural loaded absorption liquid heating means to a -27- post stage (42) of the plural loaded absorption liquid heating means.

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