公开(公告)号：US20230183589A1

公开(公告)日：2023-06-15

申请号：US17814953

申请日：2022-07-26

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Yu Wang ,  Edward W. Corcoran, JR. ,  Avelino Corma Canos

IPC: C10L3/10

CPC classification number: C10L3/105 ,  C10L3/104 ,  C10L2290/542

Abstract: This disclosure relates to the adsorption and separation of nitrogen in a feed stream (e.g., natural gas) using zeolite ITQ-55 as the adsorbent. A process is disclosed for removing impurities such as nitrogen while producing a high pressure hydrocarbon product. The process involves passing the feed stream through a bed of an adsorbent comprising zeolite ITQ-55 to adsorb nitrogen from the feed stream, thereby producing a product stream depleted in nitrogen at pressure as feed condition without need of recompression. The zeolite ITQ-55 has a mean crystal particle size within the range of from about 0.01 microns to about 40 microns. The feed stream is exposed to the zeolite ITQ-55 at effective conditions for performing a kinetic separation, in which the kinetic separation exhibits greater kinetic selectivity for nitrogen than for methane. The system and method of this disclosure are particularly suitable for use with feed streams utilizing rapid cycle PSA operations.

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.

公开(公告)号：US20230182064A1

公开(公告)日：2023-06-15

申请号：US17814969

申请日：2022-07-26

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Yu Wang ,  Edward W. Corcoran, JR. ,  Avelino Corma Canos

IPC: B01D53/04 ,  B01J20/18 ,  B01D53/047

CPC classification number: B01D53/0462 ,  B01J20/18 ,  B01D53/0473 ,  B01D2257/504 ,  B01D2253/108 ,  B01D2253/302

Abstract: This disclosure relates to the adsorption and separation of carbon dioxide in a feed stream (e.g., natural gas) using zeolite ITQ-55 as the adsorbent. A process is disclosed for removing impurities such as carbon dioxide and nitrogen while producing a hydrocarbon product. The process involves passing a feed stream through a bed of an adsorbent comprising zeolite ITQ-55 to adsorb carbon dioxide from the feed stream, thereby producing a product stream depleted in carbon dioxide. The zeolite ITQ-55 has a mean crystal particle size within the range of from about 0.1 microns to about 100 microns. The feed stream is exposed to the zeolite ITQ-55 at effective conditions for performing a kinetic separation, in which the kinetic separation exhibits greater kinetic selectivity for carbon dioxide than for methane or nitrogen. The system and method of this disclosure are particularly suitable for use with feed streams in excess of 10 MMSCFD utilizing rapid cycle PSA operations by tuning crystals size.

公开(公告)号：US20240017204A1

公开(公告)日：2024-01-18

申请号：US18349471

申请日：2023-07-10

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： David C. Calabro ,  Edward W. Corcoran, JR. ,  Neel Rangnekar ,  Yu Wang

IPC: B01D53/047 ,  H01M8/04089 ,  H01M8/14 ,  B01D53/62 ,  B01D53/92

CPC classification number: B01D53/047 ,  H01M8/04097 ,  H01M8/14 ,  B01D53/62 ,  B01D53/92 ,  H01M2008/147 ,  B01D2257/504 ,  B01D2256/12 ,  B01D2256/10 ,  B01D2259/40035 ,  B01D2259/4005 ,  B01D2259/402

Abstract: Systems and methods are provided for operating a combined cycle power plant while enhancing the CO2 content of the flue gas generated by the power plant. The CO2 content is enhanced by using a combination of exhaust gas recycle and oxygen-enriched combustion. The oxygen-containing flow for performing the oxygen-enriched combustion can be generated by an integrated pressure swing adsorption process that allows for production of a commercial grade nitrogen stream (95 vol % or more of N2) while also providing an oxygen-containing stream with an oxygen content between 25 vol % and 48 vol % with high 02 recovery.