Patent ID: 7938889
Filing Date: 2011-05-10
Classification: B01D,Y02C

Abstract:
1. A CO 2 recovery system comprising: an absorption tower that causes CO a regeneration tower that regenerates a rich solution that has absorbed CO a separation drum that condensates steam in CO the absorption tower includes a CO a washing unit that is arranged in an upper side of the CO a condensed-water receiver that is arranged in a lower side of the washing unit and collects condensed water containing a low-concentration CO a filtration membrane apparatus is provided on a lean-solution branch line branched from a lean solution supply line that supplies the lean solution from the regeneration tower to the absorption tower, a cleaning-water supply line that supplies the condensed water containing the low-concentration CO solid content remaining in the lean solution is filtered by the filtration membrane apparatus using a filter, and the filter is cleaned using the cleaning water and the low-concentration CO