Patent ID: 7488463

Claim:
A carbon dioxide recovery system comprising: a turbine which is driven and rotated by steam; a boiler which generates the steam supplied to the turbine; a carbon dioxide absorption tower which absorbs and removes carbon dioxide from a combustion exhaust gas of the boiler by an absorption liquid; and a regeneration tower which heats and regenerates a loaded absorption liquid with carbon dioxide absorbed therein, wherein the regeneration tower is provided with plural loaded absorption liquid heating means in multiple stages which heat the loaded absorption liquid and remove carbon dioxide in the loaded absorption liquid, wherein the turbine is provided with plural lines which extract plural kinds of steam with different pressures from the turbine and which supply the extracted plural kinds of steam to the plural loaded absorption liquid heating means as their heating sources, and wherein the plural lines are connected to make the pressure of supplied steam increased from a preceding stage of the plural loaded absorption liquid heating means to a post stage of the plural loaded absorption liquid heating means.