Apparatus and system for swing adsorption processes related thereto

Patent metadata

Field	Value
Publication number	US-11110388-B2
Application number	US-201916548995-A
Country	US
Kind code	B2
Filing date	Aug 23, 2019
Priority date	Aug 31, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing an input feed stream through two swing adsorption systems as a purge stream to remove contaminants, such as water, from the respective adsorbent bed units. The wet purge product stream is passed to a solvent based gas treating system, which forms a wet hydrocarbon rich stream and a wet acid gas stream. Then, the wet hydrocarbon rich stream and the wet acid gas stream are passed through one of the respective swing adsorption systems to remove some of the moisture from the respective wet streams.

First claim

What is claimed is:

1. A system for removing contaminants from a gaseous feed stream, the system comprising:
a swing adsorption system configured to receive a facility feed stream which is a dry gas stream and to pass at least a first portion of the facility feed stream through a first plurality of swing adsorption bed units, wherein each of the first plurality of swing adsorption bed units are configured to perform a first swing adsorption process to remove water from the each of the first plurality of swing adsorption bed units during a purge step and form a first purge product stream having a higher concentration of water relative to the concentration of water from the facility feed stream;
a solvent based gas treating system in fluid communication with the swing adsorption system and configured to separate one or more contaminants from the first purge product stream to form a wet hydrocarbon rich stream and a wet acid gas stream and to pass the wet hydrocarbon rich stream from the solvent based gas treating system to the swing adsorption system; and
wherein the swing adsorption system is configured to adsorb the water from the wet hydrocarbon rich stream in the first plurality of swing adsorption bed units to form a first product stream.

2. The system of claim 1 , further comprising a splitter unit configured to divide the facility feed stream into the at least a first portion of the facility feed stream.

3. The system of claim 2 , wherein the splitter unit is further configured to divide the facility feed stream into a second portion of the facility feed stream and the swing adsorption system further comprises a second plurality of swing adsorption bed units, wherein each of the second plurality of swing adsorption bed units is configured to perform a second swing adsorption process to remove water from the each of the second plurality of swing adsorption bed units by passing the second portion of the facility feed stream through the each of the second plurality of swing adsorption bed units to form a second purge product stream having a higher concentration of water relative to the concentration of water from the facility feed stream.

4. The system of claim 3 , wherein the second plurality of swing adsorption bed units is further configured to remove water from the wet acid gas stream in each of the second plurality of swing adsorption bed units by passing the wet acid gas stream through the each of the second plurality of swing adsorption bed units to form a second product stream.

5. The system of claim 4 , wherein the swing adsorption system is configured to combine the second purge product stream with the first purge product stream upstream of the solvent based gas treating system.

6. The system of claim 4 , wherein the system is configured such that the second product stream comprises predominately acid gas.

7. The system of claim 4 , wherein the second product stream is passed to injection equipment.

8. The system of claim 4 , wherein the system is configured such that the first product stream comprises predominately hydrocarbons.

9. The system of claim 4 , wherein the system is configured such that the second product stream is passed to a pipeline or a storage tank.

10. The system of claim 9 , further comprising a compression unit configured to increase the pressure of the first product stream prior to introduction to the pipeline.

11. The system of claim 4 , wherein the solvent based gas treating system comprises an amine unit.

12. The system of claim 4 , further comprising a first heating unit configured to heat the first portion of the facility feed stream prior to the first plurality of swing adsorption bed units.

13. The system of claim 12 , further comprising a second heating unit configured to heat the second portion of the facility feed stream prior to the second plurality of swing adsorption bed units.

14. The system of claim 13 , wherein the first heating unit is configured to heat the first portion of the facility feed stream to a temperature of between 40° F. and 450° F. prior to introduction of the first portion of the facility feed stream to the first plurality of swing adsorption bed units; and the second heating unit is configured to heat the second portion of the facility feed stream to a temperature of between 40° F. and 450° F. prior to introduction of the second portion of the facility feed stream to the second plurality of swing adsorption bed units.

15. The system of claim 4 , wherein the system is configured to pass the first portion of the facility feed stream through the first plurality of swing adsorption bed units in a countercurrent flow direction relative to the wet hydrocarbon rich stream through the first plurality of swing adsorption bed units.

16. The system of claim 4 , wherein the system is configured to pass the second portion of the facility feed stream through the second plurality of swing adsorption bed units in a countercurrent flow direction relative to the wet acid gas stream through the second plurality of swing adsorption bed units.

17. The system of claim 1 , wherein the cyclical swing adsorption process is a temperature swing adsorption process.

18. The system of claim 1 , wherein the cyclical swing adsorption process is a rapid cycle pressure swing adsorption process.

19. The system of claim 18 , wherein the cycle duration of the rapid cycle pressure swing adsorption process is greater than 2 seconds and less than 300 seconds.

Assignees

• Exxonmobil Upstream Res Co

Inventors

• Denton Robert D
• Nagavarapu Ananda K
• Kelley Bruce T
• Johnson Robert A
• Marshall Bennett D

Classifications

• B01D15/1821

  Simulated moving beds · CPC title

• B01D53/1437

  Pretreatment by adsorption · CPC title

• B01D2256/24

  Hydrocarbons · CPC title

• B01D53/0462

  Temperature swing adsorption · CPC title

• B01D15/161

  Temperature conditioning · CPC title