CA2427771A1 - Pressure swing adsorption dryer for pneumatically driven pressure intensifiers - Google Patents

Pressure swing adsorption dryer for pneumatically driven pressure intensifiers Download PDF

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Publication number
CA2427771A1
CA2427771A1 CA002427771A CA2427771A CA2427771A1 CA 2427771 A1 CA2427771 A1 CA 2427771A1 CA 002427771 A CA002427771 A CA 002427771A CA 2427771 A CA2427771 A CA 2427771A CA 2427771 A1 CA2427771 A1 CA 2427771A1
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CA
Canada
Prior art keywords
pair
beds
pressure intensifier
pressure
valve
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
Application number
CA002427771A
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French (fr)
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CA2427771C (en
Inventor
Gary N. Byrd
Timothy C. Phillis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cobham Mission Systems Davenport LSS Inc
Original Assignee
Litton Systems Inc
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Publication date
Application filed by Litton Systems Inc filed Critical Litton Systems Inc
Publication of CA2427771A1 publication Critical patent/CA2427771A1/en
Application granted granted Critical
Publication of CA2427771C publication Critical patent/CA2427771C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B01D53/047—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
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/104—Alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • 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
    • 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
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases

Abstract

The present invention includes two beds of activated alumina or similar material, which can remove moisture during a PSA cycle. One bed is placed in series in each drive air line for the pressure intensifier or boost pump. The beds are sized such that there is sufficient material to adsorb the moisture contained in the volume of gas required to move the drive piston through a complete stroke.

Claims (18)

1. A drying apparatus for a pressure swing adsorption system including a pair of beds having molecular sieve material each having an inlet and an outlet and a pressure intensifier for increasing the pressure of an enriched product gas, and further including a pneumatic drive cylinder for the pressure intensifier having opposed sides which are alternatively pressurized in order to drive the pressure intensifier, the pair of beds and the pneumatic drive cylinder being coupled to a source of compressed feed air, said drying apparatus, comprising:

a pair of moisture removing beds each having one port connected to the source of compressed feed air and a second port connected to the pressure intensifier;
at least one valve located between the source of compressed feed air and said pair of moisture removing beds; and wherein the pressure intensifier is alternatively pressurized with feed air via the pair of moisture removing beds.
2. The drying apparatus of claim 1, wherein said at least one valve comprises a four-way valve.
3. The drying apparatus of claim 1, wherein said at least one valve comprises a pair of two-way valves.
4. The drying apparatus of claim 1, wherein said pair of moisture removing beds include activated alumina.
5 . The drying apparatus of claim 1, wherein each of said pair of moisture removing beds is formed from the pneumatic drive cylinder.
6. A method of drying gas used in a pneumatically driven pressure intensifier, the pressure intensifier having pistons and used in a pressure swing adsorption system, the pressure swing adsorption system, including a pair of molecular sieve beds each connected to a first and a second valve, respectively, the first and the second valves each connected to a source of pressurized gas, the method comprising flowing pressurized gas to opposite sides of the pressure intensifier to position the pressure intensifier pistons;
flowing pressurized gas through a first activated bed to dry the gas and to pressurize one side of the pressure intensifier to shift the pressure intensifier to a first position and venting gas from the other side of the pressure intensifier through a second activated bed;
venting gas from the one side of the pressure intensifier through the first activated bed and flowing pressurized gas through the second activated bed to dry the gas and to pressurize the other side of the pressure intensifier to shift the pressure intensifier to a second position.
7. The method of claim 6, further comprising venting one of the pair of molecular sieve beds to atmosphere when the first valve is open and venting the other of said pair of molecular sieve beds to atmosphere when the second valve is open.
8. The method of claim 6, comprising flowing product gas from one of the molecular beds when the first valve is open to the first one side of the pressure intensifier and flowing product gas from the other of the, molecular beds when the second valve is open to the one side of the pressure intensifier.
9. The method of claim 6, comprising venting gas from one side of the pressure intensifier when one of the pair of molecular sieve beds is being vented and venting the other side of the pressure intensifier when the other of the pair of molecular sieve beds is being vented.
10. A drying kit for retrofitting a pressure intensifier used in a pressure swing adsorption system, the pressure intensifier having a first side and a second side, the pressure swing adsorption system having a pair of molecular sieve beds and a first valve connected to a source of pressurized gas and to one of the pair of molecular sieve beds and a second valve connected to the source of pressurized gas and to the other of the pair of molecular sieve beds, said drying kit comprising:
a first activated bed connectable to the source of pressurized gas and to the first side of the pressure intensifier;
a second activated bed connectable to the source of pressurized gas and to the second side of the pressure intensifier; and at least one valve to selectively connect said first activated bed to the source of pressurized gas and to selectively connect said second activated bed to the source of pressurized gas.
11. The drying kit of claim 10, wherein said at least one valve comprises a four-way valve.
12. The drying kit of claim 10, wherein said at least one valve comprises a pair of two-way valves.
13. The drying kit of claim 10, wherein said first and said second activated beds include activated alumina.
14. A pressure swing adsorption system having a pressure intensifier including a drying apparatus, comprising:

a pair of beds having molecular sieve material, each having an inlet and an outlet;
a pneumatic drive cylinder for the pressure intensifier having opposed sides which are alternatively pressurized in order to drive the pressure intensifier;
the pair of beds being disposed in the pneumatic drive cylinder and being coupled to a source of compressed feed air;
a pair of moisture removing beds each having one port connected to the source of compressed feed air and a second port connected to the pressure intensifier; and at least one valve located between the source of compressed feed air and said pair of moisture removing beds; and wherein the pressure intensifier is alternatively pressurized with feed air via the pair of moisture removing beds.
15. The pressure swing adsorption system of claim 14, wherein said at least one valve comprises a four-way valve.
16. The pressure swing adsorption system of claim 14, wherein said at least one valve comprises a pair of two-way valves.
17. The pressure swing adsorption system of claim 14, wherein said pair of moisture removing beds includes activated alumina.
18. The pressure swing adsorption system of claim 14, wherein each of said pair of moisture removing beds is formed from the pneumatic drive cylinder.
CA2427771A 2002-05-06 2003-05-05 Pressure swing adsorption dryer for pneumatically driven pressure intensifiers Expired - Fee Related CA2427771C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/138,525 2002-05-06
US10/138,525 US6660065B2 (en) 2002-05-06 2002-05-06 Pressure swing adsorption dryer for pneumatically driven pressure intensifiers

Publications (2)

Publication Number Publication Date
CA2427771A1 true CA2427771A1 (en) 2003-11-06
CA2427771C CA2427771C (en) 2011-03-22

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Family Applications (1)

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CA2427771A Expired - Fee Related CA2427771C (en) 2002-05-06 2003-05-05 Pressure swing adsorption dryer for pneumatically driven pressure intensifiers

Country Status (8)

Country Link
US (1) US6660065B2 (en)
EP (1) EP1362629B1 (en)
JP (1) JP4504631B2 (en)
KR (1) KR101018305B1 (en)
AU (1) AU2003204015B2 (en)
CA (1) CA2427771C (en)
DE (1) DE60319766T2 (en)
MX (1) MXPA03003963A (en)

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Also Published As

Publication number Publication date
CA2427771C (en) 2011-03-22
AU2003204015A1 (en) 2003-11-20
MXPA03003963A (en) 2004-10-15
AU2003204015B2 (en) 2008-07-03
DE60319766T2 (en) 2009-04-23
US6660065B2 (en) 2003-12-09
KR101018305B1 (en) 2011-03-04
JP2004000965A (en) 2004-01-08
US20030205141A1 (en) 2003-11-06
EP1362629A1 (en) 2003-11-19
JP4504631B2 (en) 2010-07-14
DE60319766D1 (en) 2008-04-30
KR20030086931A (en) 2003-11-12
EP1362629B1 (en) 2008-03-19

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