EP0108140A1 - Systeme de concentration d'oxygene - Google Patents

Systeme de concentration d'oxygene

Info

Publication number
EP0108140A1
EP0108140A1 EP19830902022 EP83902022A EP0108140A1 EP 0108140 A1 EP0108140 A1 EP 0108140A1 EP 19830902022 EP19830902022 EP 19830902022 EP 83902022 A EP83902022 A EP 83902022A EP 0108140 A1 EP0108140 A1 EP 0108140A1
Authority
EP
European Patent Office
Prior art keywords
tank
flow
oxygen
pressure
molecular sieve
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.)
Withdrawn
Application number
EP19830902022
Other languages
German (de)
English (en)
Inventor
Robert B. Smith
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.)
Marathon Medical Equipment Corp
Original Assignee
Marathon Medical Equipment Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Marathon Medical Equipment Corp filed Critical Marathon Medical Equipment Corp
Publication of EP0108140A1 publication Critical patent/EP0108140A1/fr
Withdrawn legal-status Critical Current

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
    • B01D53/047—Pressure swing adsorption
    • B01D53/053—Pressure swing adsorption with storage or buffer vessel
    • 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
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/12—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/102—Nitrogen
    • 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
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40043—Purging
    • B01D2259/40045—Purging with two sub-steps
    • 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
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40043—Purging
    • B01D2259/4005—Nature of purge gas
    • B01D2259/40052—Recycled product or process gas
    • 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
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
    • B01D2259/40064—Five
    • 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
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40077—Direction of flow
    • B01D2259/40079—Co-current
    • 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
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40077—Direction of flow
    • B01D2259/40081—Counter-current

Definitions

  • the operation of the system is such that when one of the valves is open the other shuts, so that air is directed to the molecular sieve tank 26 in the first in ⁇ stance.
  • the oxygen is passed through a check valve 30 into a storage tank 32, which holds the oxygen therein for delivery.
  • the output port 34 allows for delivery of oxygen from the system.
  • the nature of the molecular sieve tank is that after passing gas therethrough at a typical input pressure of, for example 15 PSI, or a time period typically somewhere between 15 and 25 seconds, the sieve material will no longer adsorb any further nitro ⁇ gen and the nitrogen will pass through the filter, thereby decreasing the concentration of oxygen.
  • a secondary filter 66 may be coupled to the output of the pump 62, and contains a filter element 68 for futher air purification, particularly if pump 62 is a carbon pump,
  • the output of the secondary filter 66 passes through the flow switch 58 to a molecular sieve tank 70, which may be of conventional construction including a molecular sieve material 72 operating as described hereinabove with respect to prior art systems.
  • the output of the molecular sieve tank 70 is coupled through a one way or check valve 74 to an oxygen storage or ballast tank 76,
  • the output of the oxygen ballast tank is provided via an output port 78 through a pressure regulator 80 of conventional design to a flow adjustment mechanism 82, which includes a flow gauge 84 for measuring the through-flow.
  • the output of the flow adjustment mechanism 82 is coupled to a further-bacterial filter 86, containing a suitable bacterial filtering ate- rial 88, and thence via an output port 90, for' use external to the system.
  • the flow switch " 58 consists of a body 90 having a plurality of inlet and outlet ports, 92, 94, 96 and 98.
  • the central communica ⁇ ting bore 100 is traversed by means of a piston 102 having two positions, position I shown in Figure 3 and indicated by solid lines in Figure 2, and position II shown in Figure 4 and indicated by dotted lines in Figure 2.
  • a further orifice or port 104 shown in Figures 2, 3 and 4 communicates duct 93A with oxygen tank 76 via air flow valve 99 which is acti- vated by pressure switch 93, as previously described.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

Système de concentration d'oxygène délivrant de l'oxygène sans qu'il soit nécessaire d'effectuer une commutation entre deux réservoirs d'absorption à tamis moléculaire. Un réservoir tampon d'oxygène (76) pouvant stocker et fournir l'oxygène stocké est pourvu d'un dispositif de contrôle (94) de la pression à l'intérieur du réservoir et est alimenté par un réservoir à tamis à cycle simple (70) contenant un matériau d'adsorption moléculaire. Un courant de gaz à pression atmosphérique traverse le réservoir à tamis (70) pour en extraire l'azote, et l'oxygène est dirigé du réservoir à tamis (70) vers le réservoir tampon (76). Le dispositif de contrôle (94) est sensible à une augmentation prédéterminée de la pression dans le réservoir tampon (76), et coupe le courant de gaz vers le réservoir tampon (76) et invertit le courant dans le réservoir à tamis (70) pendant un laps de temps prédéterminé pour purger le réservoir à tamis (70) par évacuation. Une bouffée finale d'oxygène depuis le réservoir tampon (76) vers le réservoir à tamis (70) complète la purge.
EP19830902022 1982-05-07 1983-05-06 Systeme de concentration d'oxygene Withdrawn EP0108140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37618882A 1982-05-07 1982-05-07
US376188 1982-05-07

Publications (1)

Publication Number Publication Date
EP0108140A1 true EP0108140A1 (fr) 1984-05-16

Family

ID=23484039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830902022 Withdrawn EP0108140A1 (fr) 1982-05-07 1983-05-06 Systeme de concentration d'oxygene

Country Status (2)

Country Link
EP (1) EP0108140A1 (fr)
WO (1) WO1983003983A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8507397D0 (en) * 1985-03-21 1985-05-01 Dowty Fuel Syst Ltd Reactivateable adsorption filter
GB8711521D0 (en) * 1987-05-15 1987-06-17 Medical & Ind Mfg Co Ltd Apparatus for supplying oxygen
US5858062A (en) * 1997-02-10 1999-01-12 Litton Systems, Inc. Oxygen concentrator
US7204249B1 (en) 1997-10-01 2007-04-17 Invcare Corporation Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
US5988165A (en) 1997-10-01 1999-11-23 Invacare Corporation Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization
KR20010057308A (ko) * 1999-12-21 2001-07-04 허지석 차량용 직류산소농축기
CN104220748B (zh) 2012-02-03 2017-06-06 英瓦卡尔公司 泵送装置
CN116617814B (zh) * 2023-07-21 2023-09-19 湖南一特医疗股份有限公司 一种多腔体结构的分子筛吸附氧气分离器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955673A (en) * 1958-08-18 1960-10-11 Kahn And Company Inc Process and apparatus for dehydrating gas
NL264204A (fr) * 1960-04-29
US3147095A (en) * 1960-08-19 1964-09-01 Great Lakes Mfg Corp Dehydration apparatus
US3160486A (en) * 1962-04-24 1964-12-08 Gilbert & Barker Mfg Co Fluid operated timing apparatus
US3395511A (en) * 1963-10-03 1968-08-06 Atlas Copco Ab Method and means for obtaining dry gas or air
US3399510A (en) * 1966-05-25 1968-09-03 Air Technologies Inc Process and apparatus for dehydrating compressed gas
US3464186A (en) * 1967-02-10 1969-09-02 Hankison Corp Dryer for compressed fluid systems
US3659399A (en) * 1970-06-29 1972-05-02 Air Technologies Inc Fractionation by adsorption
US3778967A (en) * 1971-01-18 1973-12-18 Air Technologies Inc Apparatus and process for the fractionation by the adsorption of a compressed gas
US3922149A (en) * 1974-01-30 1975-11-25 Garrett Corp Oxygen air enrichment method
GB1529701A (en) * 1975-01-02 1978-10-25 Boc International Ltd Oxygen enriched air

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8303983A1 *

Also Published As

Publication number Publication date
WO1983003983A1 (fr) 1983-11-24

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840410

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SMITH, ROBERT B.