Patent ID: 8088200
Filing Date: 2012-01-03
Classification: B01D,C10L

Abstract:
1. A method for removing acid gases from a fluid stream comprising: a) passing the fluid stream, which is in contact with an absorption medium comprising an aqueous solution of at least one amine within an absorber, through a first absorption zone in the absorber, wherein a majority of acid gases are removed from the fluid stream in the first absorption zone, and susequently passing the fluid stream through a second absorption zone in the absorber, wherein a further amount of acid gases are removed from the fluid stream in the second absorption zone; b) passing the loaded absorption medium into a first regeneration zone to obtain a partially regenerated absorption medium, and passing a part of the partially regenerated absorption medium into the first absorption zone; c) passing the other part of the partially regenerated absorption medium into a second regeneration zone to obtain a regenerated absorption medium; d) passing a part of the regenerated absorption medium into the first absorption zone and passing the other part of the regenerated absorption medium into the second absorption zone; and e) reheating in which the partially regenerated absorption medium passed from the first regeneration zone into the second regeneration zone by indirect heat exchange with the regenerated absorption medium exiting from the second regeneration zone.