Apparatus and system for swing adsorption processes related thereto

• US 10,427,088 B2
• Filed: 03/06/2017
• Issued: 10/01/2019
• Est. Priority Date: 03/18/2016
• Status: Active Grant

• Current Assignee: Exxonmobil Upstream Research Company (Exxon Mobil Corporation)
• Original Assignee: Exxonmobil Upstream Research Company (Exxon Mobil Corporation)
• Inventors: Tammera, Robert F., Kelley, Bruce T., Chialvo, Sebastian, Nagavarapu, Ananda K., Barnes, William, Fowler, Tracy A.
• Primary Examiner(s): Lawrence, Jr., Frank M
• Application Number:
  US15/450,618
• Publication Number:
  US 20170266604A1
• Time in Patent Office: 939 Days
• Field of Search: 96108, 96139, 96151, 96152
• CPC Class Codes: B01D 2253/102 Carbon
• CPC Class Codes: B01D 2253/104 Alumina
• CPC Class Codes: B01D 2253/106 Silica or silicates
• CPC Class Codes: B01D 2253/108 Zeolites
• CPC Class Codes: B01D 2253/204 Metal organic frameworks (MOF's)
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2257/80 Water
• CPC Class Codes: B01D 2259/40003 Methods relating to valve switching
• CPC Class Codes: B01D 2259/40084 by exchanging used adsorbents with fresh adsorbents
• CPC Class Codes: B01D 2259/40086 by using a purge gas B01D2259/4009 takes precedence
• CPC Class Codes: B01D 53/0407 Constructional details of adsorbing systems
• CPC Class Codes: B01D 53/0446 Means for feeding or distributing gases
• CPC Class Codes: B01D 53/047 Pressure swing adsorption
• CPC Class Codes: B01D 53/0473 Rapid pressure swing adsorption
• CPC Class Codes: B01D 53/261 by adsorption
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing streams through adsorbent bed units to remove contaminants, such as water, from the stream. As part of the process, the adsorbent bed unit may provide access to the adsorbent material within the adsorbent bed unit without having to remove one or more of valves, conduits and manifolds.

Claims

1. A cyclical swing adsorbent bed unit for removing contaminants from a gaseous feed stream, the adsorbent bed unit comprising:

a housing forming an interior region, the housing including a body portion secured between a first head and a second head;

an adsorbent bed disposed within the interior region;

a plurality of first valves secured to the housing, wherein each of the plurality of first valves is configured to control fluid flow along a flow path extending from a location external to the housing through a conduit and to the adsorbent bed, wherein each of the plurality of first valves has a valve cross sectional area disposed outside of an interface cross sectional area of the adsorbent bed;

wherein the plurality of first valves are poppet valves;

the adsorbent bed is comprised of an adsorbent material supported on a non-adsorbent support, such support containing substantially parallel flow channels; and

the adsorbent bed may be removed and replaced by access to the interior region which is achieved by removing the first head without removing the plurality of first valves from the housing.

2. The cyclical swing adsorbent bed unit of claim 1, further comprising a plurality of second valves secured to the second head, wherein each of the plurality of second valves is configured to control fluid flow along a flow path extending from a location external to the housing through a conduit and to the adsorbent bed, wherein each of the plurality of second valves has a valve cross sectional area disposed at least partially within the interface cross sectional area of the adsorbent bed.

3. The cyclical swing adsorbent bed unit of claim 2, further comprising a catch mechanism that includes a maintenance port configured to pass a debris foil into the interior region of the adsorbent bed unit, wherein the catch mechanism is configured to deflect debris from one of the plurality of second valves.

4. The cyclical swing adsorbent bed unit of claim 1, wherein the adsorbent bed unit further comprises a flow distributor disposed between the adsorbent bed and the plurality of first valves.

5. The cyclical swing adsorbent bed unit of claim 1, wherein the housing is configured to maintain a pressure from 5 pounds per square inch absolute (psia) and 1,400 psia.

6. The cyclical swing adsorbent bed unit of claim 1, wherein the plurality of first valves are each an actively-controlled valves.

7. The cyclical swing adsorbent bed unit of claim 1, wherein the plurality of first valves are each in fluid communication with one of a plurality of manifolds and are disposed in a vertical flow orientation.

8. The cyclical swing adsorbent bed unit of claim 1, further comprising a bypass seal disposed between the adsorbent bed and the housing and configured to hinder fluid flow between the housing and the adsorbent bed.

9. The cyclical swing adsorbent bed unit of claim 1, further comprising a thermal expansion ring disposed between the adsorbent bed and the housing and configured to align the adsorbent bed within the adsorbent bed unit.

10. The cyclical swing adsorbent bed unit of claim 9, wherein the thermal expansion ring is welded to the adsorbent bed.

11. The cyclical swing adsorbent bed unit of claim 1, further comprising a flow vane disposed within the first head and configured to distribute fluid flow from the conduit to the adsorbent bed.

12. The cyclical swing adsorbent bed unit of claim 1, wherein the conduit comprises one or more structural elements to direct the flow through the conduit to maintain a near plug flow regime through the conduit.