GB955894A - Method for increasing the concentration of oxygen in air - Google Patents

Method for increasing the concentration of oxygen in air

Info

Publication number
GB955894A
GB955894A GB366662A GB366662A GB955894A GB 955894 A GB955894 A GB 955894A GB 366662 A GB366662 A GB 366662A GB 366662 A GB366662 A GB 366662A GB 955894 A GB955894 A GB 955894A
Authority
GB
United Kingdom
Prior art keywords
effected
pressure
regeneration
air
pumping
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.)
Expired
Application number
GB366662A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB955894A publication Critical patent/GB955894A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0259—Physical processing only by adsorption on solids
    • 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
    • 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
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/308—Pore size
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0046—Nitrogen

Abstract

A method of increasing the content of oxygen in air comprises selectively adsorbing nitrogen therefrom by periodically contacting air at constant pressure and at -30 to 40 DEG c. with a molecular sieve zeolite, the pores of which have a diameter of at least 4 ngstrom, and regenerating the zeolite at -30 to 40 DEG C. Zeolites used are preferably of sodium-calcium or sodiumstrontium aluminosilicates, for example "Linde 5A" (Registered Trade Mark), in which the negatively charged lattice zones of the aluminosilicate structure are about two-thirds saturated by calcium ions and about one-third by sodium ions. Nitrogen adsorption may be effected at a pressure of between 1 and 5 atmospheres gauge, and regeneration is then effected by reducing the pressure to atmospheric; further regeneration may then be effected by pumping off adsorbed gases. Alternatively nitrogen adsorption may take place at normal pressure, whereupon regeneration is effected by pumping off adsorbed gases. Specifications 777,232 and 777,233 are referred to.
GB366662A 1961-02-01 1962-01-31 Method for increasing the concentration of oxygen in air Expired GB955894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF33107A DE1265724B (en) 1961-02-01 1961-02-01 Process for the enrichment of oxygen in air

Publications (1)

Publication Number Publication Date
GB955894A true GB955894A (en) 1964-04-22

Family

ID=7094947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB366662A Expired GB955894A (en) 1961-02-01 1962-01-31 Method for increasing the concentration of oxygen in air

Country Status (5)

Country Link
BE (1) BE613267A (en)
DE (1) DE1265724B (en)
GB (1) GB955894A (en)
LU (1) LU41098A1 (en)
NL (2) NL140488B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11951260B2 (en) 2020-01-21 2024-04-09 Wearair Ventures, Inc. Efficient enriched oxygen airflow systems and methods

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2198775A1 (en) * 1972-09-14 1974-04-05 Aquitaine Petrole Cheap oxygenated air prodn - by adsorbing nitrogen from air passed through column contg. crystalline zeolite
US4194891A (en) * 1978-12-27 1980-03-25 Union Carbide Corporation Multiple bed rapid pressure swing adsorption for oxygen
US4481018A (en) * 1982-11-15 1984-11-06 Air Products And Chemicals, Inc. Polyvalent ion exchanged adsorbent for air separation
JPS62212220A (en) * 1986-03-13 1987-09-18 Toyo Soda Mfg Co Ltd Production of molded article of zeolite
FR2618085A1 (en) * 1987-07-17 1989-01-20 Rhone Poulenc Chimie ADSORBENT FOR GAS PURIFICATION AND PURIFICATION PROCESS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL112453C (en) * 1957-11-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11951260B2 (en) 2020-01-21 2024-04-09 Wearair Ventures, Inc. Efficient enriched oxygen airflow systems and methods

Also Published As

Publication number Publication date
NL274214A (en)
LU41098A1 (en) 1962-03-15
BE613267A (en)
DE1265724B (en) 1968-04-11
NL140488B (en) 1973-12-17

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