FR2296433A1 - Procede et appareil d'enrichissement en oxygene d'air pour respiration - Google Patents

Procede et appareil d'enrichissement en oxygene d'air pour respiration

Info

Publication number
FR2296433A1
FR2296433A1 FR7540368A FR7540368A FR2296433A1 FR 2296433 A1 FR2296433 A1 FR 2296433A1 FR 7540368 A FR7540368 A FR 7540368A FR 7540368 A FR7540368 A FR 7540368A FR 2296433 A1 FR2296433 A1 FR 2296433A1
Authority
FR
France
Prior art keywords
respiration
air oxygen
enriching air
enriching
oxygen
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
FR7540368A
Other languages
English (en)
Other versions
FR2296433B1 (fr
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.)
BOC Group Ltd
Original Assignee
BOC International Ltd
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 BOC International Ltd filed Critical BOC International Ltd
Publication of FR2296433A1 publication Critical patent/FR2296433A1/fr
Application granted granted Critical
Publication of FR2296433B1 publication Critical patent/FR2296433B1/fr
Granted 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
    • B01D53/0454—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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/14—Respiratory apparatus for high-altitude aircraft
    • 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
    • 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
    • B01D2259/40011—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
    • B01D2259/40062—Four
    • 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
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/414—Further details for adsorption processes and devices using different types of adsorbents
    • B01D2259/4141—Further details for adsorption processes and devices using different types of adsorbents within a single bed
    • B01D2259/4145—Further details for adsorption processes and devices using different types of adsorbents within a single bed arranged in series
    • B01D2259/4146—Contiguous multilayered adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
    • 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
    • B01D53/04—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

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)
  • Separation Of Gases By Adsorption (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
FR7540368A 1975-01-02 1975-12-31 Procede et appareil d'enrichissement en oxygene d'air pour respiration Granted FR2296433A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB98/75A GB1529701A (en) 1975-01-02 1975-01-02 Oxygen enriched air

Publications (2)

Publication Number Publication Date
FR2296433A1 true FR2296433A1 (fr) 1976-07-30
FR2296433B1 FR2296433B1 (fr) 1980-01-18

Family

ID=9698371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7540368A Granted FR2296433A1 (fr) 1975-01-02 1975-12-31 Procede et appareil d'enrichissement en oxygene d'air pour respiration

Country Status (10)

Country Link
US (1) US4065272A (fr)
JP (1) JPS51142476A (fr)
AU (1) AU502198B2 (fr)
CA (1) CA1059040A (fr)
DE (1) DE2559120A1 (fr)
ES (1) ES444009A1 (fr)
FR (1) FR2296433A1 (fr)
GB (1) GB1529701A (fr)
SE (1) SE7514628L (fr)
ZA (1) ZA757880B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511890A1 (fr) * 1981-08-28 1983-03-04 Greene & Kellogg Recipient pour lit adsorbant en vue d'une utilisation dans un appareil fonctionnant avec un cycle d'adsorption a oscillations de pression
FR2512125A1 (fr) * 1981-08-28 1983-03-04 Greene & Kellogg Machine compacte pour separer un gaz a partir d'un melange gazeux par la technique du cycle d'adsorption a oscillations de pression
EP0185980A2 (fr) * 1984-12-27 1986-07-02 Teijin Limited Appareil d'enrichissement d'oxygène
EP0509638A1 (fr) * 1991-04-16 1992-10-21 The BOC Group plc Appareil pour la séparation d'un mélange de gaz
EP0628336A1 (fr) * 1993-06-09 1994-12-14 Callidus Technologies Inc. Système de récupération de vapeur

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652486C2 (de) * 1976-11-18 1987-01-08 Bergwerksverband Gmbh, 4300 Essen Verfahren zur Gewinnung von stickstoffreichen Gasen aus neben N↓2↓ wenigstens O↓2↓ enthaltenden Gasen, wie z.B. Luft
GB1594454A (en) * 1976-12-23 1981-07-30 Boc Ltd Gas separation
US4197096A (en) * 1978-08-22 1980-04-08 Boc Limited Fluid supply system including a pressure-swing adsorption plant
JPS5580702A (en) * 1978-12-14 1980-06-18 Nippon Denshi Zairyo Kk Oxygen concentrating apparatus
US4194891A (en) * 1978-12-27 1980-03-25 Union Carbide Corporation Multiple bed rapid pressure swing adsorption for oxygen
JPS55149620A (en) * 1979-05-11 1980-11-21 Noboru Sato Oxygen-enriching system having good rise-up characteristic
ZA811931B (en) * 1980-03-31 1982-05-26 African Oxygen Ltd Process and apparatus for the separation of gaseous mixture
JPS577802A (en) * 1980-06-18 1982-01-16 Hitachi Ltd Concentrating method for oxygen
US4349357A (en) * 1980-06-23 1982-09-14 Stanley Aviation Corporation Apparatus and method for fractionating air and other gaseous mixtures
DE3029080A1 (de) * 1980-07-31 1982-02-18 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zum bereitstellen von atemgas
GB2086258A (en) * 1980-10-30 1982-05-12 Boc Ltd Process and apparatus for separation of a gaseous mixture
US4440548A (en) * 1982-04-19 1984-04-03 Calgon Carbon Corporation Pressure swing absorption system
WO1983003983A1 (fr) * 1982-05-07 1983-11-24 Marathon Medical Equipment Corporation Systeme de concentration d'oxygene
US4516424A (en) * 1982-07-09 1985-05-14 Hudson Oxygen Therapy Sales Company Oxygen concentrator monitor and regulation assembly
US4648888A (en) * 1982-07-09 1987-03-10 Hudson Oxygen Therapy Sales Co. Oxygen concentrator
US4534346A (en) * 1983-03-15 1985-08-13 Guild Associates, Inc. Pressure swing cycle for the separation of oxygen from air
US4477264A (en) * 1983-03-30 1984-10-16 Air Products And Chemicals, Inc. Pressure swing adsorption process for a medical oxygen generator for home use
US4491459A (en) * 1983-05-04 1985-01-01 Pinkerton Charles J Portable oxygen enrichment and concentration system
JPS61259726A (ja) * 1985-05-14 1986-11-18 Daiki Rubber Kogyo Kk ガス吸着分離装置
JPH0620504B2 (ja) * 1985-05-17 1994-03-23 住友精化株式会社 プレツシヤ−スイング用吸着槽
JPS61266302A (ja) * 1985-05-17 1986-11-26 Seitetsu Kagaku Co Ltd 濃縮酸素回収方法
US4713100A (en) * 1986-06-30 1987-12-15 Seitetsu Kagaku Co., Ltd. Adsorption apparatus
JPS6379709A (ja) * 1986-09-22 1988-04-09 Teijin Ltd 酸素富化器
US4756723A (en) * 1987-03-04 1988-07-12 Air Products And Chemicals, Inc. Preparation of high purity oxygen
DE3829584A1 (de) * 1988-09-01 1990-03-08 Bayer Ag Trennung von gasgemischen durch vakuum swing adsorption in einem zwei-adsorber-system
EP0449448B1 (fr) * 1990-03-29 1997-01-22 The Boc Group, Inc. Procédé pour la production d'un courant de produit enrichi avec de l'oxygène
US5084075A (en) * 1990-04-10 1992-01-28 Air Products And Chemicals, Inc. Vacuum swing adsorption process for production of 95+% n2 from ambient air
US5074892A (en) * 1990-05-30 1991-12-24 Union Carbide Industrial Gases Technology Corporation Air separation pressure swing adsorption process
GB9124156D0 (en) * 1991-11-14 1992-01-08 Boc Group Plc Compressing oxygen
US5340381A (en) * 1993-05-17 1994-08-23 Vorih Marc L Operating system for dual-sieve oxygen concentrators
US5370728A (en) * 1993-09-07 1994-12-06 Praxair Technology, Inc. Single bed pressure swing adsorption system and process
US5415683A (en) * 1993-11-17 1995-05-16 Praxair Technology, Inc. Vacuum pressure swing adsorption process
US5711787A (en) * 1995-11-22 1998-01-27 Praxair Technology, Inc. Oxygen recovery pressure swing adsorption process
DE602004010465T2 (de) * 1997-01-31 2008-03-13 RIC Investments, Inc., Wilmington Druckwechselabsorptionsvorrichtung mit Mehrkammerbehälter
US5882380A (en) * 1997-05-14 1999-03-16 Air Products And Chemicals, Inc. Pressure swing adsorption process with a single adsorbent bed
US5871564A (en) * 1997-06-16 1999-02-16 Airsep Corp Pressure swing adsorption apparatus
US6010555A (en) * 1997-11-04 2000-01-04 Praxair Technology, Inc. Vacuum pressure swing adsorption system and method
US6096115A (en) * 1998-11-25 2000-08-01 Air Products And Chemicals, Inc. Pressure swing adsorption process and system utilizing two product storage tanks
US6102985A (en) * 1998-11-25 2000-08-15 Air Products And Chemicals, Inc. Pressure swing adsorption process and system with dual product storage tanks
US6146447A (en) * 1998-11-25 2000-11-14 Air Products And Chemicals, Inc. Oxygen generation process and system using single adsorber and single blower
US6183538B1 (en) 1999-02-09 2001-02-06 Air Products And Chemicals, Inc. Pressure swing adsorption gas flow control method and system
US6156101A (en) * 1999-02-09 2000-12-05 Air Products And Chemicals, Inc. Single bed pressure swing adsorption process and system
US6142151A (en) * 1999-04-16 2000-11-07 United Technologies Corporation Spool valve for switching air flows between two beds
US6792846B2 (en) * 2000-09-26 2004-09-21 Universal Oxygen, Inc. Gas delivery system
US6425938B1 (en) * 2000-11-01 2002-07-30 Air Products And Chemicals, Inc. Single bed pressure swing adsorption process
US6471744B1 (en) 2001-08-16 2002-10-29 Sequal Technologies, Inc. Vacuum-pressure swing absorption fractionator and method of using the same
FR2839263B1 (fr) * 2002-05-03 2005-01-14 Air Liquide Systeme embarque de production d'oxygene pour aeronefs, en particulier aeronefs a long rayon d'action
US7722698B2 (en) 2008-02-21 2010-05-25 Delphi Technologies, Inc. Method of determining the purity of oxygen present in an oxygen-enriched gas produced from an oxygen delivery system
US20090212962A1 (en) * 2008-02-22 2009-08-27 Delphi Technologies, Inc. Oxygen Generating System with Self-Contained Electronic Diagnostics and Fault-Tolerant Operation
US8075676B2 (en) * 2008-02-22 2011-12-13 Oxus America, Inc. Damping apparatus for scroll compressors for oxygen-generating systems
US8236095B1 (en) 2008-10-17 2012-08-07 O2 Concepts, LLC Vacuum-pressure swing absorption concentrator
US20140158557A1 (en) * 2012-12-12 2014-06-12 Basf Corporation Gas Storage and Release Into Packaging After Filling
FR3006052B1 (fr) * 2013-05-23 2015-05-01 Air Liquide Sante Services Dispositif et procede de mesure de duree de consommation de gaz dans un batiment hospitalier
US20210402128A1 (en) * 2020-06-24 2021-12-30 O2-Matic Products Private Limited Portable oxygen generator system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790512A (en) * 1953-12-22 1957-04-30 United Gas Corp Process for dehydrating and removing adsorbable components from gas streams
US3069830A (en) * 1960-03-24 1962-12-25 Exxon Research Engineering Co Heatless fractionator
BE603202A (fr) * 1960-04-29
NL297067A (fr) * 1962-09-04 1900-01-01
GB1054373A (fr) * 1963-05-17
US3313091A (en) * 1963-11-04 1967-04-11 Exxon Research Engineering Co Vacuum cycle adsorption
US3242650A (en) * 1963-09-30 1966-03-29 Exxon Research Engineering Co Adsorption apparatus
US3659399A (en) * 1970-06-29 1972-05-02 Air Technologies Inc Fractionation by adsorption
DE2055425B2 (de) * 1970-11-11 1979-09-06 Bayer Ag, 5090 Leverkusen Adsorptionsverfahren zum Zerlegen von Gasgemischen
US3636679A (en) * 1971-01-04 1972-01-25 Union Carbide Corp Selective adsorption gas separation process
FR2135388B1 (fr) * 1971-05-03 1973-05-11 Air Liquide
GB1449864A (en) * 1973-10-24 1976-09-15 Boc International Ltd Adsorption system
US3957463A (en) * 1973-12-12 1976-05-18 Air Products And Chemicals, Inc. Oxygen enrichment process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511890A1 (fr) * 1981-08-28 1983-03-04 Greene & Kellogg Recipient pour lit adsorbant en vue d'une utilisation dans un appareil fonctionnant avec un cycle d'adsorption a oscillations de pression
FR2512125A1 (fr) * 1981-08-28 1983-03-04 Greene & Kellogg Machine compacte pour separer un gaz a partir d'un melange gazeux par la technique du cycle d'adsorption a oscillations de pression
EP0185980A2 (fr) * 1984-12-27 1986-07-02 Teijin Limited Appareil d'enrichissement d'oxygène
EP0185980A3 (en) * 1984-12-27 1987-06-16 Teijin Limited Oxygen enriching apparatus
EP0509638A1 (fr) * 1991-04-16 1992-10-21 The BOC Group plc Appareil pour la séparation d'un mélange de gaz
EP0628336A1 (fr) * 1993-06-09 1994-12-14 Callidus Technologies Inc. Système de récupération de vapeur

Also Published As

Publication number Publication date
US4065272A (en) 1977-12-27
DE2559120A1 (de) 1976-07-08
AU8798675A (en) 1977-07-07
FR2296433B1 (fr) 1980-01-18
AU502198B2 (en) 1979-07-19
CA1059040A (fr) 1979-07-24
GB1529701A (en) 1978-10-25
ES444009A1 (es) 1977-04-16
ZA757880B (en) 1976-11-24
SE7514628L (sv) 1976-07-05
JPS51142476A (en) 1976-12-08

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