CA2374536A1 - Multistage system for separating gas by adsorption - Google Patents
Multistage system for separating gas by adsorption Download PDFInfo
- Publication number
- CA2374536A1 CA2374536A1 CA002374536A CA2374536A CA2374536A1 CA 2374536 A1 CA2374536 A1 CA 2374536A1 CA 002374536 A CA002374536 A CA 002374536A CA 2374536 A CA2374536 A CA 2374536A CA 2374536 A1 CA2374536 A1 CA 2374536A1
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- CA
- Canada
- Prior art keywords
- gas
- adsorbent
- module
- product
- adsorbent module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/0476—Vacuum pressure swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40003—Methods relating to valve switching
- B01D2259/40005—Methods relating to valve switching using rotary valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/406—Further details for adsorption processes and devices using more than four beds
- B01D2259/4068—Further details for adsorption processes and devices using more than four beds using more than ten beds
Abstract
A pressure swing adsorption system (300') for separating components of a gas mixture module (301') and a second adsorbent module (302') coupled to the first adsorbent module includes a first gas inlet for receiving the gas mixture, at least one bed of first adsorbent material in communication with the first gas inlet for adsorbing a gas mixture component from the gas mixture, and a first gas outlet in communication with the first adsorbent beds for receiving a first product gas therefrom. The second adsorbent module includes a second gas inlet coupled to the first gas outlet for receiving the first product gas, at least one second bed of adsorbent material in communication with the second gas inlet for adsorbing a first product gas component from the first product gas, and a second gas outlet in communication with the second adsorbent beds for receiving a second product gas therefrom.
The first product gas substantially excludes the adsorbed gas mixture component, and the second product gas substantially excludes the adsorbed first product gas component. Also, the adsorbent modules are configured for transferring the first product gas between the adsorbent modules over a plurality of discrete pressure levels to maintain substantial uniformity of gas flow therebetween.
The first product gas substantially excludes the adsorbed gas mixture component, and the second product gas substantially excludes the adsorbed first product gas component. Also, the adsorbent modules are configured for transferring the first product gas between the adsorbent modules over a plurality of discrete pressure levels to maintain substantial uniformity of gas flow therebetween.
Claims (19)
1. A gas separation system comprising:
a first adsorbent module including a first gas inlet for receiving a gas mixture, at least one bed of first adsorbent material in communication with the first gas inlet for adsorbing a gas mixture component from the gas mixture, and a first gas outlet in communication with the at least one first adsorbent bed for receiving a first product gas therefrom, the first product gas substantially excluding the adsorbed gas mixture component; and a second adsorbent module including a second gas inlet coupled to the first gas outlet for receiving the first product gas, at least one second bed of adsorbent material in communication with the second gas inlet for adsorbing a first product gas component from the first product gas, and a second gas outlet in communication with the at least one second adsorbent bed for receiving a second product gas therefrom, the second product gas substantially excluding the adsorbed first product gas component, the first and second adsorbent modules being configured for transferring the first product gas between the adsorbent modules over a plurality of discrete pressure levels to maintain substantial uniformity of gas flow therebetween.
a first adsorbent module including a first gas inlet for receiving a gas mixture, at least one bed of first adsorbent material in communication with the first gas inlet for adsorbing a gas mixture component from the gas mixture, and a first gas outlet in communication with the at least one first adsorbent bed for receiving a first product gas therefrom, the first product gas substantially excluding the adsorbed gas mixture component; and a second adsorbent module including a second gas inlet coupled to the first gas outlet for receiving the first product gas, at least one second bed of adsorbent material in communication with the second gas inlet for adsorbing a first product gas component from the first product gas, and a second gas outlet in communication with the at least one second adsorbent bed for receiving a second product gas therefrom, the second product gas substantially excluding the adsorbed first product gas component, the first and second adsorbent modules being configured for transferring the first product gas between the adsorbent modules over a plurality of discrete pressure levels to maintain substantial uniformity of gas flow therebetween.
2. The gas separation system according to claim l, wherein the adsorbent modules comprise pressure swing gas adsorbent modules, the first gas adsorbent module including a second feed gas inlet, and the second gas adsorbent module including a countercurrent blowdown gas outlet coupled to the second feed gas inlet for providing the first gas adsorption module with blowdown gas.
3. The gas separation system according to claim 2, wherein the second gas adsorbent module includes a light reflux gas exit for providing pressurized light reflux gas, an expander in communication with the light reflux gas exit for facilitating pressure letdown of the pressurized light reflux gas, and a reflux gas inlet for receiving the light reflux gas from the expander after the pressure letdown.
4. The gas separation system according to claim 2 or 3, wherein the first gas adsorbent module includes a compressor for providing the feed gas mixture, and a vacuum pump coupled to the compressor and the countercurrent blowdown gas outlet for effecting vacuum regeneration of the second gas adsorbent module.
5. The gas separation system according to claim 4, wherein the first gas adsorbent module further includes a heat exchanger coupled between the vacuum pump and the countercurrent blowdown outlet for effecting purging of the first gas adsorbent module.
6. The gas separation system according to claim 1, wherein the adsorbent modules comprise pressure swing gas adsorbent modules, the second gas adsorbent module includes a heavy reflux gas outlet for providing heavy reflux gas, a reflux compressor in communication with the heavy reflux gas outlet for compressing the heavy reflux gas, and a heavy reflux gas inlet for receiving the pressurized heavy reflux gas from the reflux compressor.
7. The gas separation system according to claim 6, wherein the second gas adsorbent module includes a light product gas outlet coupled to the first feed gas inlet for enhancing heavy product recovery.
8. The gas separation system according to claim 7, wherein the first gas adsorbent module includes a light reflux gas exit for providing pressurized light reflux gas, an expander in communication with the light reflux gas exit for facilitating pressure letdown of the pressurized light reflux gas, and a reflux gas inlet for receiving the light reflux gas from the expander after the pressure letdown.
9. The gas separation system according to claim 1, wherein one of the adsorbent modules comprises a dehumidifier.
10. The gas separation system according to any of the preceding claims, wherein at least one of the adsorbent modules comprises a rotary pressure swing adsorbent module, the at least one rotary pressure swing adsorption module including:
a stator including a first stator valve surface, a second stator valve surface, a plurality of first function compartments opening into the first stator valve surface, and a plurality of second function compartments opening into the second stator valve surface; and a rotor rotatably coupled to the stator and including a first rotor valve surface in communication with the first stator valve surface, a second rotor valve surface in communication with the second stator valve surface, a plurality of flow paths for receiving the respective adsorbent material therein, each said flow path including a pair of opposite flow path ends, and a plurality of apertures provided in the rotor valve surfaces and in communication with the flow path ends and the function compartments to cyclically expose each said flow path to the plurality of discrete pressure levels for maintaining the substantially uniformity of gas flow through the function compartments.
a stator including a first stator valve surface, a second stator valve surface, a plurality of first function compartments opening into the first stator valve surface, and a plurality of second function compartments opening into the second stator valve surface; and a rotor rotatably coupled to the stator and including a first rotor valve surface in communication with the first stator valve surface, a second rotor valve surface in communication with the second stator valve surface, a plurality of flow paths for receiving the respective adsorbent material therein, each said flow path including a pair of opposite flow path ends, and a plurality of apertures provided in the rotor valve surfaces and in communication with the flow path ends and the function compartments to cyclically expose each said flow path to the plurality of discrete pressure levels for maintaining the substantially uniformity of gas flow through the function compartments.
11. The gas separation system according to any of the preceding claims, wherein the first adsorbent material is different from the second adsorbent material.
12. A method of separating components of a gaseous mixture comprising the steps of:
providing a first adsorbent module including at least one bed of a first adsorbent material;
providing a second adsorbent module in communication with the first adsorbent module, the second adsorbent module including at least one bed of a second adsorbent material;
adsorbing a gas mixture component from the gas mixture with the first adsorbent material;
transferring a first product gas from between the first adsorbent module and the second adsorbent module with substantially uniform gas flow, the first product gas substantially excluding the adsorbed gas mixture component;
adsorbing a first product gas component from the first product gas with the second adsorbent material, and extracting a second product gas from the second adsorbent module, the second product gas substantially excluding the adsorbed first product gas component.
providing a first adsorbent module including at least one bed of a first adsorbent material;
providing a second adsorbent module in communication with the first adsorbent module, the second adsorbent module including at least one bed of a second adsorbent material;
adsorbing a gas mixture component from the gas mixture with the first adsorbent material;
transferring a first product gas from between the first adsorbent module and the second adsorbent module with substantially uniform gas flow, the first product gas substantially excluding the adsorbed gas mixture component;
adsorbing a first product gas component from the first product gas with the second adsorbent material, and extracting a second product gas from the second adsorbent module, the second product gas substantially excluding the adsorbed first product gas component.
13. The method according to claim 12, wherein the adsorbent modules comprise pressure swing adsorbent modules, and the transferring step comprises the steps of transferring light product gas from the first adsorbent module to the second adsorbent module, and transferring blowdown gas from the second adsorbent module to the first adsorbent module.
14. The method according to claim 13, wherein the step of extracting a first product gas comprises the steps of extracting light reflux gas from the second adsorbent module, and returning the light reflux gas to the second adsorbent module after pressure letdown.
15. The method according to claim 12, wherein the adsorbent modules comprise pressure swing adsorbent modules, and the transferring step comprises the steps of extracting blowdown gas from the second adsorbent module under vacuum, and delivering the extracted second product gas to the first adsorbent module under pressure.
16. The method according to claim 15, wherein the delivering step comprises the steps of heating the extracted blowdown gas, and providing the second adsorbent module with the heated blowdown gas.
17. The method according to claim 15 or 16, wherein the step of extracting a first product gas comprises the steps of extracting light reflux gas from the second adsorbent module, and returning the light reflux gas to the second adsorbent module after pressure letdown.
18. The method according to claim 12, wherein the adsorbent modules comprise pressure swing adsorbent modules, and the step of extracting a second product gas comprises the steps of extracting heavy reflux gas from the second adsorbent module, and returning the heavy reflux gas to the second adsorbent module under increased pressure.
19. The method according to claim 18, wherein the step of extracting a first product gas comprises the steps of extracting light reflux gas from the first adsorbent module, and returning the light reflux gas to the first adsorbent module after pressure letdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2374536A CA2374536C (en) | 1999-06-10 | 2000-06-12 | Multistage system for separating gas by adsorption |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002274390A CA2274390A1 (en) | 1999-06-10 | 1999-06-10 | Multistage chemical separation method and apparatus using pressure swing adsorption |
| CA2,274,390 | 1999-06-10 | ||
| PCT/CA2000/000696 WO2000076631A1 (en) | 1999-06-10 | 2000-06-12 | Multistage system for separating gas by adsorption |
| CA2374536A CA2374536C (en) | 1999-06-10 | 2000-06-12 | Multistage system for separating gas by adsorption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2374536A1 true CA2374536A1 (en) | 2000-12-21 |
| CA2374536C CA2374536C (en) | 2010-07-27 |
Family
ID=25681006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2374536A Expired - Lifetime CA2374536C (en) | 1999-06-10 | 2000-06-12 | Multistage system for separating gas by adsorption |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2374536C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3613491A1 (en) * | 2018-08-14 | 2020-02-26 | Air Products And Chemicals, Inc. | Port separation for rotary bed psa |
-
2000
- 2000-06-12 CA CA2374536A patent/CA2374536C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3613491A1 (en) * | 2018-08-14 | 2020-02-26 | Air Products And Chemicals, Inc. | Port separation for rotary bed psa |
| US10730006B2 (en) | 2018-08-14 | 2020-08-04 | Air Products And Chemicals, Inc. | Port separation for rotary bed PSA |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2374536C (en) | 2010-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20200612 |
|
| MKEX | Expiry |
Effective date: 20200612 |