| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbon dioxide recovery system capable of suppressing the descent of power of a turbine in the regeneration of an absorbing liquid in which carbon dioxide is absorbed, a power generation system using the recovery system and methods thereof. <P>SOLUTION: The carbon dioxide recovery system is provided with a carbon dioxide absorption tower 18 for absorbing and removing carbon dioxide from a combustion exhaust gas of a boiler 1 using the absorbing liquid and a regeneration tower 24 for regenerating the load absorbing liquid in which carbon dioxide is absorbed by heating. The regeneration tower 24 is provided with a plurality of load absorbing liquid heating means 41, 42 for removing carbon dioxide in the load absorbing liquid by heating the load absorbing liquid in multistage. The turbine 8 rotatably driven by boiler steam is provided with a plurality of lines 44, 45 through which a plurality of pieces of steam each having different pressure and extracted from the turbine are supplied respectively to the plurality of load absorbing liquid heating means 41, 42 as heating sources. The plurality of lines 44, 45 are respectively connected to the plurality of the load absorbing liquid heating means 41, 42 so as to increase the pressure of the steam to be supplied from the front stage 41 of the load absorbing liquid heating means toward the rear stage 42. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
