Patent ID: 6090186
Filing Date: 2000-07-18
Classification: B01D,C10L,Y02C

Abstract:
A method for removing CO.sub.2 from a multicomponent gaseous stream to produce a CO.sub.2 depleted gaseous stream, said method comprising:contacting said multicomponent gaseous stream with CO.sub.2 nucleated water comprising water produced by decomposition of a CO.sub.2 clathrate slurry under conditions of CO.sub.2 clathrate formation, whereby CO.sub.2 is absorbed from said gaseous stream by said CO.sub.2 nucleated water and concomitantly fixed as CO.sub.2 clathrates upon said contacting, whereby a CO.sub.2 depleted gaseous stream and a CO.sub.2 clathrate slurry are produced;separating said CO.sub.2 depleted gaseous stream from said CO.sub.2 clathrate slurry; anddecomposing said CO.sub.2 clathrate slurry to produce CO.sub.2 gas and CO.sub.2 nucleated water.