Apparatus and system for swing adsorption processes related thereto

Patent metadata

Field	Value
Publication number	US-11260339-B2
Application number	US-201916545667-A
Country	US
Kind code	B2
Filing date	Aug 20, 2019
Priority date	Mar 18, 2016
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

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.

First claim

What is claimed is:

1. A process for removing contaminants from a feed stream, the process comprising:
a) performing one or more adsorption steps in an adsorbent bed unit, wherein each of the one or more adsorption steps comprise: (i) opening at least one first poppet valve to pass a gaseous feed stream from a feed inlet conduit to an adsorbent bed disposed in an interior region of a housing of the adsorbent bed unit, wherein the at least one first poppet valve is in direct flow communication with the feed inlet conduit and configured to control fluid flow along a flow path extending from a location external to the housing through the feed inlet conduit and to the adsorbent bed, wherein the at least one first poppet valve has a first valve cross sectional area disposed outside of an interface cross sectional area of the adsorbent bed, (ii) exposing the gaseous feed stream to the adsorbent bed to separate one or more contaminants from the gaseous feed stream to form a product stream, and (iii) opening one or more product poppet valves to conduct away the product stream from the interior region in the housing to a product conduit;
b) performing one or more purge steps, wherein each of the one or more purge steps comprise passing a purge stream into the adsorbent bed unit to conduct away at least a portion of the one or more contaminants in a purge output stream, wherein the purge output stream is passed through at least one second poppet valve, wherein the at least one second poppet valve has a second valve cross sectional area disposed outside of an interface cross sectional area of the adsorbent bed; and
c) repeating the steps a) to b) for at least one additional cycle, wherein the cycle duration is for a period greater than 1 second and less than 600 seconds.

2. The process of claim 1 , wherein the at least one first poppet valve and the at least one second poppet valve are in direct fluid communication with the adsorbent bed through a conduit.

3. The process of claim 1 , wherein the at least one first poppet valve is in direct fluid communication with the adsorbent bed through a first conduit and the at least one second poppet valve is in direct fluid communication with the adsorbent bed through a second conduit.

4. The process of claim 1 , wherein the opening the at least one first poppet valve further comprises distributing the gaseous feed stream to the adsorbent bed via a flow diverter disposed between the adsorbent bed and the at least one first poppet valve.

5. The process of claim 1 , wherein opening the at least one first poppet valve further comprise linearly moving with a first actuating mechanism at least one valve stem to provide an opening between a disk element coupled to the at least one valve stem and a seat secured to a portion of the adsorbent bed unit.

6. The process of claim 1 , further comprising:
interrupting the cycle;
removing a head from the adsorbent bed unit near the at least one first poppet valve and the at least one second poppet valve to expose an opening to the interior region; and
removing the adsorbent bed from the interior region, wherein the at least one first poppet valve and the at least one second poppet valve are coupled to the adsorbent bed unit.

7. The process of claim 6 , further comprising:
disposing a second adsorbent bed into the interior region;
securing the head to the adsorbent bed unit; and
resuming the cycle for the process.

8. The process of claim 6 , further comprising guiding the adsorbent bed unit within the interior region with a thermal expansion ring.

9. The process of claim 6 , further comprising: inserting a debris foil into a port prior to removing the head.

10. The process of claim 6 , wherein removing the adsorbent bed from the interior region does not involve removing any of one or more of the at least one first poppet valve, the at least one second poppet valve or any associated conduits from the adsorbent bed unit.

11. The process of claim 1 , wherein:
the housing includes a body portion secured between a first head and a second head;
the at least one first poppet valve is secured to the housing; and
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 at least one first poppet valve from the housing.

12. The process of claim 11 , wherein:
the at least one first poppet valve is one of a plurality of first poppet valves wherein the plurality of first poppet valves are secured to the housing; 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 poppet valves from the housing.

13. The process of claim 12 , wherein:
the one or more product poppet valves secured to the second head; and
each of the one or more product poppet valves has a valve cross sectional area disposed at least partially within the interface cross sectional area of the adsorbent bed.

14. The process of claim 13 , wherein there is a plurality of product poppet valves secured to the second head.

15. The process of claim 11 , wherein the housing is configured to maintain a pressure from 5 pounds per square inch absolute (psia) and 1,400 psia.

16. The process of claim 12 , wherein the plurality of first poppet valves are each an actively-controlled valve.

17. The process of claim 14 , wherein the plurality of product poppet valves are each an actively-controlled valve.

18. The process of claim 1 , further comprising wherein the fluid flow is hindered from flowing between the housing and the adsorbent bed by a bypass seal disposed between the adsorbent bed and the housing.

19. The process of claim 1 , further comprising a flow vane disposed within the first head which distributes the fluid flow from the feed inlet conduit to the adsorbent bed.

20. The process of claim 1 , further comprising wherein feed inlet conduit comprises one or more structural elements to direct the flow through the feed inlet conduit to maintain a near plug flow regime through the conduit.

Assignees

• Exxonmobil Upstream Res Co

Inventors

• Tammera Robert F
• Kelley Bruce T
• Chialvo Sebastian
• Nagavarapu Ananda K
• Barnes William
• Fowler Tracy A

Classifications

• B01D53/0473

  Rapid pressure swing adsorption · CPC title

• B01D2257/504

  Carbon dioxide · CPC title

• B01D2259/40084

  by exchanging used adsorbents with fresh adsorbents · CPC title

• B01D2253/104

  Alumina · CPC title

• B01D53/0446 Primary

  Means for feeding or distributing gases · CPC title