| US 7,608,133 B2 | ||
| Lithium-exchanged faujasites for carbon dioxide removal | ||
| Stephen F. Yates, Arlington Heights, Ill. (US); and Allen A. MacKnight, Signal Hill, Calif. (US) | ||
| Assigned to Honeywell International Inc., Morristown, N.J. (US) | ||
| Filed on May 16, 2006, as Appl. No. 11/383,589. | ||
| Claims priority of provisional application 60/777468, filed on Feb. 27, 2006. | ||
| Prior Publication US 2007/0199448 A1, Aug. 30, 2007 | ||
| Int. Cl. B01D 59/26 (2006.01) | ||
| U.S. Cl. 95—95 [95/139; 95/148] | 17 Claims |
| 1. A process for removing carbon dioxide from a gas comprising the steps of:
feeding a stream of gas through an adsorbent bed at a carbon dioxide partial pressure of less than about 10 torr;
adsorbing carbon dioxide from the gas stream to yield a carbon-dioxide depleted gas, the adsorbent bed comprising a lithium-exchanged
X-zeolite; and
regenerating the adsorbent bed, after it is substantially saturated, with a pressure swing desorption from about 1×10−6 torr to about 1 torr.
|