GB2190014A - Improved valving assembly for a pressure swing adsorption apparatus - Google Patents
Improved valving assembly for a pressure swing adsorption apparatus Download PDFInfo
- Publication number
- GB2190014A GB2190014A GB08710564A GB8710564A GB2190014A GB 2190014 A GB2190014 A GB 2190014A GB 08710564 A GB08710564 A GB 08710564A GB 8710564 A GB8710564 A GB 8710564A GB 2190014 A GB2190014 A GB 2190014A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- adsorption
- fluid flow
- adsorption apparatus
- assembly
- 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.)
- Granted
Links
Classifications
-
- 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
- B01D53/0454—Controlling 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
- B01D53/04—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
-
- 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
-
- 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
- B01D2259/402—Further details for adsorption processes and devices using two beds
-
- 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
Abstract
Pressure swing adsorption apparatus includes two adsorption vessels 10 and 12 (each having a bed of particulate adsorption material) which are provided with lower conduits 14 and 18 respectively and upper conduits 16 and 20 respectively. The apparatus includes a pressurized gas inlet conduit 48, a product gas conduit 50 and a vent conduit 46. There are an upper valve assembly 24 and a lower valve assembly 22. The upper valve assembly 24 includes a valve housing 26 and a rotary valve controller 28 disposed therein for selectively placing the upper conduits 16 and 20 of adsorption vessels 10 and 12 in fluid flow communication with one another and with the product conduit 50. The lower valve assembly 22 includes a similar valve housing and rotary valve controller for selectively placing the lower conduits 14 and 18 of the adsorption vessels 10 and 12 in fluid flow communication with one another and with the pressurized gas inlet conduit 48 and the vent conduit 46. <IMAGE>
Description
SPECIFICATION
Improved valving assemblyfor a pressure swing adsorption apparatus
This invention relates to an apparatus for separating a gaseouscomponentfrom a gaseous stream, and more particularlyto an improved valving assembly for a PSA assembly for enrichment of a gaseous compo nent of gaseous stream.
The use of adsorption techniques to separate a gaseous componentfrom a gaseous stream was initially developedforthe removal of carbon dioxide and waterfrom air. The principles of gas adsorption werefurther refined to processes for gas enrichment of a gas, such as hydrogen, helium, argon, carbon monoxide, carbon dioxi#de, nitrous oxide, oxygen and nitrogen. Still further refinements using at least two adsorption vessels in a cycling pressurized relationship resulted in an adsorption technique for gas enrichment, commonly referred to as pressure swing adsorption (PSA).
Atypical PSA assembly for enriching a gas, such as nitrogen from air, employs two adsorption beds, each subjected to four distinct processing steps in each cycle. In a first step ofthe cycle, one adsorption bed is pressurized with concomitant nitrogen production while the other bed is regenerated, such as by venting.
In a second step, sometimes referred to as pressure equalization,the adsorption beds are brought to an equalized pressure by interconnection of the adsorption beds. In a third step of the cycle, the first adsorption bed is regenerated, sometimes with a countercurrentflow of product-quality gas to enhance the regeneration (referred to as "purge"), while the second bed is pressurized with concomitant nitrogen production.The last step ofthecycle is pressure equalization between the beds. During such pressure swings, pressure conditions in the adsorption beds vary between about 15 psia to 120 psig. e.g. in a process employing carbon molecular sieves for nitrogen production and somewhat lower pressure ranges in process employing crystalline zeolitesfor producing oxygen.
Such PSA apparatus requires an extensive piping and instrumentation configuration with concomitant close control of the opening and closing ofthevalves during the cycling process for efficacious operation.
The piping and instrumentation for such PSA apparatus may include electrically operated actuators for driving the valves, and an electrical failure could result infailureofthePSAapparatusdepending on valving configuration and process stage atthe time of electrical failure. The requirements for electrical energy to operate a PSA apparatus, by definition, renders hazardous the operation of a PSA apparatus.
The invention aims at providing apparatus for enrichment of a gas mixture by pressure swing adsorption, which employs rotataryvalves.
According to the invention there is provided an adsorption apparatusforenrichment of a gas mixture by pressure swing adsorption, including two adsorp tionveselseach having an adsorption material disposed therein, a lowerconduitand an upper conduit; a feed conduitfor passing said gaseous mixture under pressure to said adsorption apparatus; a product conduitforwithdrawing an enriched gas from said adsorption apparatus; a purge conduit; and an upper and a lowervalve assembly; said upper valve assembly including a valve housing and a rotary valvecontrollerhavingchannelsthereinforselective- ly placing said productconduitinfiuidflowcom munication with said upper conduits of said adsorption vessels, and said lowervalve assembly including a valve housing and a rotary valve controller having channels therein for selectively placing said feed conduit, said vent conduit and said lower conduit of said adsorption vessels in fluid flow communication during gas enrichment.
A better understanding of the present invention as well as other objects and advantages thereof will become apparent upon consideration ofthe detailed description thereof, especially when taken with the accompanying drawings, wherein: FIGURE lisa schematic flow diagram ofthe present invention in a first stage of operation of a two bed pressure swing adsorption assembly;
FIGURE 2 is an enlarged cross-sectional schematic view ofthe rotary control valve assembly ofthe present invention;
FIGURE 3 is a schematic view of cooperating rotary control valve assemblies of the present invention; FIGURE 4 is a schematic flow diagram of the assembly of the preesent invention in the second and fourth stages of operation; and
FIGURE 5 is a schematicflowdiagram ofthe assemblyofthe present invention in a third stage of operation.
To facilitate an understanding of the present invention, certain valving and piping assemblies are not illustrated in the drawings; however, it will be understood that such additional valving, piping and instrumentation are provided consistent with accepted practices in the art. The present invention will be described in the context of nitrogen enrichment of air using an adsorbent bed of carbon molecular sieves, although it will be understood by one skilled in the artthatthe process and apparatus of the present invention is applicable to gas enrichment, per se, using pressure swing adsorption techniques.
Referring now to FIGURE 1 ,there is illustrated a pressure swing adsorption system comprised of two adsorption vessels 10 and 12 filled with an appropriate adsorption material,e.g.acrystallinezeoliteorcarbon molecular sieves, depending on the intended enrichment process. Adsorption vessels 10 and 12 are provided with a lower conduits 14 and 16 and upper conduits 18 and 20, respectively. Between the adsorption vessels 10 and 12, there are provided a lower valve assembly and an uppervalve assembly, generally indicated as 22 and 24, respectively.
Each valve assembly 22 and 24 is formed of a housing 26, referring specificallyto FIGURE 2, in which is disposed for rotation a rotary valve controller 28. The housing 26 is formed with chambers 30,32,24 and 36 disposed at 900 with respect to adjacent channels thereoffor connection to conduit members, as more fully hereinafter described. The rotary valve controller28 is formed with a plurality of channels 38, 40 and 42 for aligning the chambers 30,32,34 and 36 thereofwith respectto oneanotherto effectfluid flow through the channels 38,40 and 42 with respect to a predetermined chamberconfiguration, as more fully hereinafter described.The channels 38 and 42 are formed in 90 elbow-like configuration in the rotary valve controller 28 to provide fluid flow between chambers in the valve housing 26 whereas the channel 40 is formed along a diameter between the channels 38 and 42 to provide fluid flow between two opposite chambers 30-34 of the valve housing 26. The channel 40 in the rotary valve controller 28 is provided with a fluid flow restriction member 44. In one embodiment of the present invention, it is contemplated that the rotary valve controller 28 of each valve assemblies 22 and 24 is mounted to a common shaft for coordinated rotation during the processing cycle, as more fully hereinafter discussed with reference to
FIGURE 3.
The valve assembly 22, referring again to FIGURE 1, is connected via chamber 30 thereof to the lower portion ofthe adsorption vessel 10 by conduit 14 whereasthe chamber 35 thereof is connected to the lower portion ofthe adsorption vessel 12 by conduit 18. The uppervalve assembly 24 is connected via chamber30 to the upper portion of the adsorption vessel 10 by conduit 16 whereas the chamber 34 thereof is connected to the upper proportion of the adsorption vessel 12 by conduit 20.
The chamber 32 ofthe lowervalve assembly 22 is connected by a conduit 46 to the vent or the atmosphere, whereas the chamber 36 is connected by conduit 48 to a source of a pressurized gaseous stream. Such as compressed airto be enriched in the adsorption vessels 10 and 12. The chamber 36 of the upper valve assembly 24 is connected by a conduit 50 including a one-way valve 52 to a user or storage facility (not shown) whereas the chamber 32 thereof is connected via conduit 54 including a fluid flow restriction member 56 to a source of a purge gas, usually the storage facility (not shown).
In the first stage of operation as illustrated in
FIGURE 1, the rotary valve controllers 28 are positioned in the housing 26to providefluidflow communication between chambers 30-36 and 32-34 via channels 42 and 38, respectively.
Referring to FIGUREC illustrative ofthe second and fourth stages of operation, the rotaryvalve controllers 28 disposed in the housing 26 ofthe valve assemblies 22 and 24 are disposed in an intermediate configuration. In such configuration,the chambers 30-34 are in fluid flow communication via the channel 40 including fluid flow restriction member 44.
In the third stage of operation, referring to FIGURE 5, the chamber 32 ofthe lower valve assembly 22 is connected by the conduit 46to vent orthe atmosphere, whereas the chamber 36 > is connected by conduit 48 to the source of a pressurized gaseous stream, such as compressed airto be enriched in the adsorption vessels 10 and 12. The chamber36 ofthe uppervalve assembly 24 is connected by the conduit 50 including one-way valve 52 to the user or storage facility (not shown) whereas the chamber 32 thereof is connected via conduit 54 including a fluid flow
restriction member 56 to the storage facility.In such third stage of operation, the rotary valve controllers 28 are positioned in the housing 26to providefluidflow communication between chambers 30-32 and 34-36 via channels 38 and 42, respectively.
As hereinabove mentioned, a particularly advantageous operation ofthe apparatus ofthe present invention is achieved in an arrangement of the valve assemblies 22 and 24, referring to FIGURE 3, by mounting the rotary valve controllers 28 of each valve assembly 22 and 24 to a common shaft 60. The shaft 60 is mounted for rotation underthecontrol ofan actuator62 including Iines64and66infiuidffow communication with a source (notshown) of pressu rized flu id. The rotary valve controllers 28 of the-va Ive assemblies 22 and 24 are spring-loaded to the intermediate position wherein chambers 30 and 34are in fluid flow communication via the channel 40.
Introduction of a pressurized fluid through either the line 64 orthe line 66 causes the shaft 60 to rotate 45 in a clockwise or counterclockwise direction, respectively, during gas enrichment processing in the stagewise cycling ofthe operation of the apparatus of the present invention.
Operation of the apparatus of the present invention will be described in the context of a presure swing adsorption (PSA) using an adsorption material for a nitrogen enrichment process, it being understood that any gaseous enrichment process may be effected therein as understood by one skilled in the art, with each adsorption vessel having a bed of material suited forthe intended gaseous fractionation. Since the use of such adsorption materials is known in the art, it is believed unnecessary to provide a description of such adsorption materials, nor its use in each adsorption vessel ofthe present invention. Additionally, cycling times as well as time duration of individual steps thereof are employed consistent with accepted cycling time, etc. for general PSA processing.
Referring again to FIGURE 1, let it be assumed that the apparatus is in operation and that adsorption vessel 10 has been desorbed whereas the adsorption vessel 12 requires regeneration and pressure equalization there between effected, and the rotary valve controller 28 of each of the valve assemblies 22 and 24 has assumed the configuration illustrated therein, such as by the clockwise rotation thereof within the valve housing 26 of the valve assemblies 22 and 24. The clockwise rotation of the rotary valve controllers 28 is in response to the clockwise rotation ofthe shaft 60 connected to actuator 62 caused by the introduction of a pressurized gaseous stream into the actuator 62 by line 64. Pressurized air in conduIt48is passed through valve assembly 22via chambers 36-30 and channel 42 and introducedviaconduit 14 into the lower portion of adsorption vessel 10. After a period of time, during which the pressure in the adsorption vessel 10 rises from an intermediate (equalization) pressure to a pressure equal to that in the storage facility and flow from the adsorption vessel 10 to the storage facility becomes possible, product gas is withdrawn from the upper portion of the adsorption vessel 10 by conduit 16 and is passed through valve assembly 24 via chambers 30-36 and channel 42 by conduit SOto product storage (not shown).
Description of adsorption vessel 12 is simultaneous ly effected including the steps of venting the adsorption vessel 12 to the atmosphere via conduit 46 by placing the lower portion of the adsorption vessel 12 in fluid flow communication therewith via conduit 18 through the valve assembly 22 via chambers 34-32 and the channel 38. The process of desorption may include evacuation ofthe adsorption vessel 12 by placing conduit46 in fluid flow communication with the suction side of a vacuum pump (not shown).A purge gas may be used in the adsorption process by placing the upper portion ofthe adsorption vessel 12 influid flow communication with a source of purge gas in conduit 54 including a fluid flow restriction member 56 through the uppervalve assembly 24 via chambers 32-34 and channel 38 thereof.
Upon reaching a point where the bed ofthe adsorption material in the adsorption vessel 10 is fully charged, i.e. when the level of oxygen in the product nitrogen gas reaches an upperthreshold value, the rotary valve controllers 28 ofthe valve assemblies 22 and 24 are rotated in a counterclockwise direction, referring now to FIGURE 4, by discontinuing the introduction of pressurized gas into actuator 62 by line 64 whereby the shaft 60 rotates into the intermediate position. In the intermediate position, the chambers 30-34 of the valves 22 and 24 are in fluid flow communication therebetween via the channel 40 including fluid flow restriction mem ber 44to effect pressure equalization between the beds of adsorption materials in adsorption vessels 10 and 12.
After pressure equalization, referring now to FI
G U RE 5, each rotary valve controller 28 of the valve assemblies 22 and 24 is rotated in a counterclockwise direction in response to the counterclockwise rotation of the shaft 60 caused by the introduction of a pressurized gas into the actuator 62 by line 66to place the adsorption vessel 12 into a producing stage. In this configuration ofthe rotary valve controllers 28 ofthe valve assemblies 22 and 24, pressurized air in conduit 48 is passed through valve assembly 22 via chambers 36-34 and channel 42 and introduced via conduit 18 into the lower portion of adsorption vessel 12.After the pressurization stage, product gas is withdrawn from the upper portion ofthe adsorption vessel 12 by conduit 20 and is passed through valve assembly 24 via chambers 34-36 and channel 42 by conduit 50 to product storage (not shown).
Desorption of adsorption vessel 10 is simultaneously effected during gas production including the steps of venting the adsorption vessel 10 to atmosphere via conduit 46 by placing the lower portion ofthe adsorption vessel 10 in fluid flow communication therewith via conduit 14through the valve assembly 22 via chambers 30-32 and channel 38. The process of desorption ofthe adsorption vessel 10 is similarly effected as hereinabove described with reference to adsorption vessel 12.
Upon reaching a point where the bed of the
adsorption material in the adsorption vessel 10 isfully charged, the rotary valve controllers 28 of the valve
assemblies 22 and 24 are rotated in a clockwise
direction, referring to FIGURE 4, by discontinuing the
introduction of pressurizing gas into actuator 62 by
line 64wherebythe shaft 60 rotates into the intermedi
ate position. In such intermediate position, the chambers30-34ofthevalves22 and 24 are in fluid flow communication therebetween via the channel 40 including fluid flow restriction member 44to effect pressure equalization between the bed of adsorption materials in adsorption vessels 10 and 12. Thereafter, cycling ofthe assembly is repeated as hereinabove discussed.
The following example is illustrative of conditions for use of the apparatus of the present invention and it is to be understood that the scope of the present invention is not to be limited thereby.
EXAMPLE Adsorption vessels are filled with 2 liters each of a carbon molecularsieveandconnectedtoa lowerand an upperfour-wayvalve assembly including a rotary controller having a 1/4" linear channel including a 1/16" orifice positioned therein. Each rota ry valve controller is mounted to a shaft connected to an actuator having a spring return intermediate position.
The actuator is rotatable 45 in either a clockwise or counterclockwise direction by the introduction of pressurized gas through selective gas inlet line.
The lowervalve assembly is connected to a source of compressed air (100 psig) and vent as hereinabove described whereas the upper valve assembly is connected to a storage vessel by a conduit including a one-way pressure regulator (80 psig). A processing sequence is established wherein a pressurized gas is alternately introduced into the gas inlet lines of the actuatorfor periods of 56 seconds followed by 4 seconds of interrupted pressurized gas flow to the actuator. During interrupted flow (or no flow) of pressurized gas to the actuator, the adsorption vessels underwent pressure equalization prior to desorptionproduction andviceversa in a 4-stage operating sequence during which there is produced a flow of nitrogen gas to the storage vessel.
It will be appreciated by one skilled in the artthatthe rotary valve controller of the valve assembly is configured to permit only chamber-to-chamber fluid flow relationship via one channel. Additionally, since the flow of fluid through the apparatus of the present invention may be effected by the introduction of a pressurized fluid in lines 64 or 66 into the actuator 62, the requirements for electrical energy for operating the system is obviated with control of the stages of operation effected by pneumatic timers. Thus, the apparatus of the present invention may be self contained. Still further, in the event of any failure, the actuator 62 returns to its intermediate position in which the product storage is isolated, the feed system is isolated and the adsorption beds remain pressu rizedtofacilitate a rapid restart.
While the present invention has been described in connection with an exemplary embodimentthereof, it will be understood that many modifications will be apparenttothose of ordinary skill in the art, and that this application is intended to cover any adaptations or variations thereof. Therefore, it is manifestly
intended that this invention be only limited by the claims and the equivalents thereof.
Claims (15)
1. An adsorption apparatus for enrichment of a
gas mixture by pressure swing adsorption, including two adsorption vessels each having an adsorption material disposed therein, a lower conduit and an upper conduit; a feed conduitfor passing said gaseous mixture under pressure to said adsorption apparatus; a product conduitforwithdrawing an enriched gas from said adsorption apparatus; a purge conduit; and an upper and a lowervalve assembly, said uppervalve assembly including a valve housing and a rotary valve controller having channels therein for selectively placing said product conduit in fluid flow communication with said upper conduits of said adsorption vesels, and said lower valve assembly including a valve housing and a rotary valve controller having channels therein for selectively placing said feed conduit, said vent conduit and said lower conduit of said adsorption vessels in fluid flow communication during gas enrichment.
2. An adsorption apparatus as claimed in Claim 1, wherein each said valve housing hasfourchambers, each of said chambers being disposed at about 90" from an adjacent chamber;
3. An adsorption apparatus as claimed in Claim 2, wherein one chamber of said uppervalve assembly is connected to one upper conduit, an opposite chamber of said uppervalve assembly is connected to the other upper conduit, one chamber of said lower valve assembly is connected to one lower conduit, and an opposite chamber of said lower valve assembly is connected to the other lower conduit.
4. An adsorption apparatus as claimed in Claim 3, wherein a third chamber of said uppervalve assembly is connected to said product conduit and a third chamber of said lowervalve assembly is connected to said feed conduit.
5. An adsorption apparatus as claimed in Claim 4, wherein the fourth chamber of said lower valve assembly is connected to a vent conduitforwithdrawing desorbed gas from said apparatus, and the fouth chamber of said upper valve assembly is connected to said purge conduit.
6. An adsorption apparatus as claimed in any one of Claims 2 to 5, wherein said rotary valve controller is formed with an intermediate channel for placing opposite chambers of said valve housing in fluid flow communication with one another.
7. An adsorption apparatus as claimed in Claim 6, wherein said rotaryvalve controller is formed with channels on either side of said intermediate channel for placing adjacent chambers of said rotary valve housing in fluid flow communication with one another.
8. An adsorption apparatus as claimed in Claim 6 or Claim 7, wherein each rotary valve controller is mounted on a shaft.
9. An adsorption apparatus as claimed in Claim 8, wherein said shaft is connected to an actuator means for rotating said shaft.
10. An adsorption apparatus as claimed in Claim 9, wherein said actuator means in an inactivated posi tion causes said rotary valve controllerto assume a
position whereby said intermediate channel places said opposite chambers in fluid flow communication with one another.
11. An adsorption apparatus as claimed in Claim
10, wherein said actuator means is caused to rotate clockwise from said inactivated position thereby placing a first adsorption vessel in fluid flow communication with said feed conduit and said product conduit while concomitantly placing the second adsorption vessel in fluid flow communication with said vent conduit, and wherein said actuator means is caused to rotate counterclockwise from said i n activated state thereby placing said first adsorption vessel in fluid flow communication with said vent conduit and concomitantly said second adsorption vessel in fluid flow communication with said feed conduit and said product conduit.
12. An adsorption apparatus as claimed in Claim 10 orclaim 1 1,wherein said rotaryvalve controller is caused to rotate clockwise and counterclockwise through an angle of 45"from said inactivated position.
13. An adsorption apparatus as claimed in any one of Claims 10 to 12, wherein said upper conduit of said second adsoprtion vessel is in fluid flow communica- tion with a conduit including product gas upon clockwise rotation of said rotary valve controller and wherein said upper conduit of said first adsorption vessel is in fluid flow communication with a conduit including product gas upon clockwise rotation of said rotary valve controller.
14. An adsorption apparatus as claimed in any one of claims 6 to 13, wherein said intermediate channel has a flow restriction member.
15. An adsorption apparatus as claimed in any one of the preceding claims wherein said adsorption vessels contain carbon molecular sieve particles.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86040186A | 1986-05-07 | 1986-05-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8710564D0 GB8710564D0 (en) | 1987-06-10 |
| GB2190014A true GB2190014A (en) | 1987-11-11 |
| GB2190014B GB2190014B (en) | 1990-04-11 |
Family
ID=25333155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8710564A Expired - Lifetime GB2190014B (en) | 1986-05-07 | 1987-05-05 | Improved valving assembly for a pressure swing adsorption apparatus |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU571387B2 (en) |
| GB (1) | GB2190014B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4318203C1 (en) * | 1993-06-01 | 1994-09-15 | Ppv Verwaltungs Ag | Rotary slide valve and use thereof |
| WO2006097217A1 (en) * | 2005-03-16 | 2006-09-21 | Marvil Engineering S.R.L. | System for suppressing carbon dioxide from controlled atmosphere environments |
| EP1872845A1 (en) * | 2006-06-30 | 2008-01-02 | Air Products and Chemicals, Inc. | Pressure swing adsorption system with indexed rotatable multi-port valves |
| FR2998634A1 (en) * | 2012-11-27 | 2014-05-30 | Ge Energy Products France Snc | SPHERICAL SHUTTER VALVE, IN PARTICULAR FOR GAS TURBINE |
| US20140216261A1 (en) * | 2011-07-18 | 2014-08-07 | Carrier Corporation | Regenerative Scrubber System With Single Flow Diversion Actuator |
| US20150354716A1 (en) * | 2014-06-05 | 2015-12-10 | Schaeffler Technologies AG & Co. KG | Rotary valve with an isolating distribution body |
| WO2017011447A1 (en) * | 2015-07-13 | 2017-01-19 | Nuvera Fuel Cells, LLC | Pressure swing adsorbers with flow regulation by orifices |
| WO2022120408A1 (en) * | 2020-12-11 | 2022-06-16 | Southern Green Gas Limited | A gas separation apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0525521A1 (en) * | 1991-08-01 | 1993-02-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Gas separator system |
| CN112892154A (en) * | 2021-01-22 | 2021-06-04 | 山东津挚环保科技有限公司 | Sled dress pressure swing adsorption equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162146A (en) * | 1977-12-14 | 1979-07-24 | Pall Corporation | Multi-chamber adsorbent gas fractionator with non-jamming effluent flow control valve |
| US4322223A (en) * | 1979-03-30 | 1982-03-30 | Pall Corporation | Adsorbent fractionators with electronic sequence timer cycle control and process |
-
1987
- 1987-05-05 GB GB8710564A patent/GB2190014B/en not_active Expired - Lifetime
- 1987-05-07 AU AU72585/87A patent/AU571387B2/en not_active Ceased
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4318203C1 (en) * | 1993-06-01 | 1994-09-15 | Ppv Verwaltungs Ag | Rotary slide valve and use thereof |
| US5584322A (en) * | 1993-06-01 | 1996-12-17 | Ppv Verwaltungs Ag | Rotary slide valve |
| WO2006097217A1 (en) * | 2005-03-16 | 2006-09-21 | Marvil Engineering S.R.L. | System for suppressing carbon dioxide from controlled atmosphere environments |
| US9101872B2 (en) | 2006-06-30 | 2015-08-11 | Air Products And Chemicals, Inc. | Pressure swing adsorption system with indexed rotatable multi-port valves |
| EP1872845A1 (en) * | 2006-06-30 | 2008-01-02 | Air Products and Chemicals, Inc. | Pressure swing adsorption system with indexed rotatable multi-port valves |
| US7854793B2 (en) | 2006-06-30 | 2010-12-21 | David Lester Rarig | Pressure swing adsorption system with indexed rotatable multi-port valves |
| US8603220B2 (en) | 2006-06-30 | 2013-12-10 | Air Products And Chemicals, Inc. | Pressure swing adsorption system with indexed rotatable multi-port valves |
| KR100939055B1 (en) * | 2006-06-30 | 2010-01-28 | 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드 | Pressure swing adsorption system with indexed rotatable multi-port valves |
| US9403116B2 (en) * | 2011-07-18 | 2016-08-02 | Carrier Corporation | Regenerative scrubber system with single flow diversion actuator |
| US20140216261A1 (en) * | 2011-07-18 | 2014-08-07 | Carrier Corporation | Regenerative Scrubber System With Single Flow Diversion Actuator |
| WO2014083075A1 (en) * | 2012-11-27 | 2014-06-05 | Ge Energy Products France Snc | Shut-off rotary valve, particularly for gas turbine |
| FR2998634A1 (en) * | 2012-11-27 | 2014-05-30 | Ge Energy Products France Snc | SPHERICAL SHUTTER VALVE, IN PARTICULAR FOR GAS TURBINE |
| US9719603B2 (en) | 2012-11-27 | 2017-08-01 | Ge Energy Products France Snc | Shut-off rotary valve, particularly for gas turbine |
| US20150354716A1 (en) * | 2014-06-05 | 2015-12-10 | Schaeffler Technologies AG & Co. KG | Rotary valve with an isolating distribution body |
| US9803760B2 (en) * | 2014-06-05 | 2017-10-31 | Schaeffler Technologies AG & Co. KG | Rotary valve with an isolating distribution body |
| US10247317B2 (en) | 2014-06-05 | 2019-04-02 | Schaeffler Technologies AG & Co. KG | Rotary valve with an isolating distribution body |
| WO2017011447A1 (en) * | 2015-07-13 | 2017-01-19 | Nuvera Fuel Cells, LLC | Pressure swing adsorbers with flow regulation by orifices |
| US10201775B2 (en) | 2015-07-13 | 2019-02-12 | Nuvera Fuel Cells, LLC | Regulating flow of pressure swing adsorbers |
| AU2016291736B2 (en) * | 2015-07-13 | 2022-03-17 | Nuvera Fuel Cells, LLC | Pressure swing adsorbers with flow regulation by orifices |
| WO2022120408A1 (en) * | 2020-12-11 | 2022-06-16 | Southern Green Gas Limited | A gas separation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8710564D0 (en) | 1987-06-10 |
| GB2190014B (en) | 1990-04-11 |
| AU571387B2 (en) | 1988-04-14 |
| AU7258587A (en) | 1987-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5487775A (en) | Continuous pressure difference driven adsorption process | |
| US4877429A (en) | Valve device for P.S.A. or R.P.S.A. systems | |
| US5679134A (en) | Device and process for the separation of gas by adsorption | |
| US6156101A (en) | Single bed pressure swing adsorption process and system | |
| EP1752204B1 (en) | Rotary valve with internal leak control system | |
| EP1027914B1 (en) | Pressure swing adsorption gas flow control method and system | |
| US4765804A (en) | PSA process and apparatus employing gaseous diffusion barriers | |
| KR100939055B1 (en) | Pressure swing adsorption system with indexed rotatable multi-port valves | |
| US6425938B1 (en) | Single bed pressure swing adsorption process | |
| US5882380A (en) | Pressure swing adsorption process with a single adsorbent bed | |
| US6929683B2 (en) | Method and apparatus for pressure swing adsorption | |
| EP0758625B1 (en) | Method of recovering oxygen-rich gas | |
| US6287366B1 (en) | Process for the production of oxygen by adsorption with transatmospheric pressure variation | |
| AU2564097A (en) | Flow regulated pressure swing adsorption system | |
| WO2001041900A3 (en) | Process and apparatus for pressure swing adsorption separation of a gas mixture | |
| CA1305433C (en) | Psa process and apparatus employing gaseous diffusion barriers | |
| GB2190014A (en) | Improved valving assembly for a pressure swing adsorption apparatus | |
| US4758252A (en) | Hydrostatic method employing PSA vent gas pressure for vacuum regeneration | |
| EP0177173B1 (en) | Improved apparatus for the separation of a gaseous mixture | |
| US5785740A (en) | Device and process for the separation of gas by adsorption | |
| EP0621069A1 (en) | Adsorption process to produce 99+% oxygen from air | |
| JPH05212235A (en) | Mixed gas separation equipment | |
| JP7149573B2 (en) | Pressure swing adsorption device | |
| ZA200704991B (en) | Pressure swing adsorption system with indexed rotatable multi-port valves | |
| KR200375440Y1 (en) | Gas Concentrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19990505 |