公开(公告)号：US20230182066A1

公开(公告)日：2023-06-15

申请号：US17814931

申请日：2022-07-26

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Yu Wang ,  Edward W. Corcoran, Jr. ,  Pavel Kortunov ,  Avelino Corma Canos

IPC: B01D53/047 ,  B01D53/04

CPC classification number: B01D53/0473 ,  B01D53/0423 ,  B01D2253/108 ,  B01D2253/304 ,  B01D2253/342 ,  B01D2257/80 ,  B01D2257/104 ,  B01D2259/402

Abstract: This disclosure relates to the adsorption and separation of fluid components, such as oxygen, in a feed stream, such as air, using zeolite ITQ-55 as the adsorbent. A process is disclosed for adsorbing oxygen from a feed stream containing oxygen, nitrogen and argon. The process comprises passing the feed stream through a bed of an adsorbent comprising zeolite ITQ-55 to adsorb oxygen from the feed stream, carrying out an equalization step to improve recovery, thereby producing a nitrogen product stream depleted in oxygen as well as a waste stream can be collected to have enriched oxygen. The kinetic selectivity and related mass transfer rates can be tuned by varying the mean crystal particle size of zeolite ITQ-55 within the range of from about 0.1 microns to about 40 microns, or by varying the adsorption temperature within the range from about -195° C. to about 30° C., or by varying the adsorption pressure within the range from about 1 bar (~14.7 psi) to about 30 bar (~435 psi), or combinations thereof. The feed stream is exposed to the zeolite ITQ-55 at effective conditions for performing a rapid cycle of kinetic separation, in which oxygen exhibits greater kinetic selectivity than nitrogen and argon.