Patent ID: 6387337
Filing Date: 2002-05-14
Classification: B01D,Y02C

Abstract:
A method for removing carbon dioxide from a gas stream, comprising the step of:continuously moving a dry, solid sorbent, comprised of an active material, vertically through a first moving-bed reactor; directing materially unaltered stream of gas containing carbon dioxide from a source to said first moving bed reactor; flowing said unaltered stream of gas containing carbon dioxide through a bed of said sorbent perpendicular to the movement of said sorbent; regulating a speed of said sorbent movement through said first moving-bed reactor relative to a flow rate of said gas such that the carbon dioxide reacts with the active material to remove the carbon dioxide from the gas; continuously removing a spent sorbent from said first moving-bed reactor and moving said spent sorbent to a second reactor; processing said spent sorbent in said second reactor so as to liberate a stream of carbon dioxide and produce a regenerated sorbent; and recycling said regenerated sorbent to the first moving-bed reactor.