WO1996006799A1 - Generateur d'oxygene portable - Google Patents

Generateur d'oxygene portable Download PDF

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Publication number
WO1996006799A1
WO1996006799A1 PCT/CA1995/000507 CA9500507W WO9606799A1 WO 1996006799 A1 WO1996006799 A1 WO 1996006799A1 CA 9500507 W CA9500507 W CA 9500507W WO 9606799 A1 WO9606799 A1 WO 9606799A1
Authority
WO
WIPO (PCT)
Prior art keywords
reactor
oxygen
hydrogen peroxide
feed tank
pressure
Prior art date
Application number
PCT/CA1995/000507
Other languages
English (en)
Inventor
Tino Salonia
Original Assignee
Geno2X Corporation
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 Geno2X Corporation filed Critical Geno2X Corporation
Priority to AU33388/95A priority Critical patent/AU3338895A/en
Publication of WO1996006799A1 publication Critical patent/WO1996006799A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B21/00—Devices for producing oxygen from chemical substances for respiratory apparatus
    • 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
    • C01B13/0203—Preparation of oxygen from inorganic compounds
    • C01B13/0211—Peroxy compounds
    • C01B13/0214—Hydrogen peroxide

Definitions

  • This invention relates to a portable oxygen generator and, in particular, a portable oxygen generator which produces gaseous oxygen by a process of decomposition of aqueous hydrogen peroxide using a catalyst of embossed metallic lead strips Background Art
  • Oxygen gas is used in scientific, medical and industrial procedures and there is a need for a relatively light and portable generating system.
  • the development of a portable system has been disclosed in U. S. patent 4,792,435, entitled OXYGEN GENERATING SYSTEM which issued December 20, 1988 to Nakajima Do osho Company Limited of Tokyo, Japan in respect of an invention made by Nakajima, Masahiko, of Tokyo, Japan.
  • the invention disclosed is an oxygen generating system for continuously generating oxygen gas by the catalytic decomposition of an aqueous hydrogen peroxide that includes a catalyst having a platinum group catalyst component earned on a highly porous sintered ceramic support of a large pore size and a reaction chamber for accommodating the catalyst.
  • the system further includes a control device for controlling the operation of the hydrogen peroxide supplying based on a detection signal from a pressure sensor for detecting the pressure of the generated oxygen gas.
  • the oxygen generating system is compact and reduced in weight due to the catalytic decomposition of hydrogen peroxide at high concentration, which can be earned out effectively and safely under an increased temperature.
  • Aqueous hydrogen peroxide is produces a large amount of oxygen per unit volume and is know as a means of reducing the size and the weight of an oxygen generator as compared, for example, to a high pressure oxygen gas cylinder.
  • Japanese Utility Model Publication No. 26445/1980 discloses an oxygen gas generating system adapted to catalytically decompose aqueous hydrogen peroxide by using a manganese compound as a catalyst. This has been pointed out by Nakajima that the decomposing reaction proceeds explosively if the concentration of hydrogen peroxide exceeds about 5 w/w %. However, higher concentrations are necessary to achieve practical utility in a portable supply of aqueous hydrogen peroxide.
  • Nakajima discloses a pressure sensor for detecting the pressure of the oxygen gas and a water level sensor for detecting the water level in the gas/water separator attached to the separator.
  • the sensors disclosed are semiconductor sensors or mechanical diaphragm sensors.
  • a control unit controls a pump depending on the signal from the pressure sensor Disclosure of Invention
  • the present invention provides an improved construction of a portable oxygen generator employing the p ⁇ n ⁇ ple of the decomposition of hydrogen peroxide in the presence of a catalyst in a reactor.
  • the system comp ⁇ ses a feed tank having an intake mouth to receive liquid hydrogen peroxide pnor to operation, a cap to seal the mouth du ⁇ ng operation and an outlet pipe, an on ⁇ off valve to permit an operator to control discharge from the feed tank; a regulator valve to stop discharge from the feed tank when pressure in the system is equal to a predetermined pressure and to permit discharge when pressure in the system is less than said predetermined pressure; a reactor in which hydrogen peroxide is decomposed in the presence of a catalyst to oxygen and water, said reactor being in communication with said feed tank through said discharge pipe, said on ⁇ off valve and said regulator; a cooling coil in communication with said reactor to condense the water to a liquid and cool the oxygen from the reactor; a separator tank in communication with said cooling coil to receive an hold the liquid water and oxygen from the cooling coil and being in communication with the feed tank to balance pressure in the feed tank with the pressure in the separator tank; a drain leading from a bottom portion of said separator tank to discharge liquid water and having a drain valve to open or close said drain
  • the oxygen generating system preferably has a reactor pipe having a round cross section.
  • the catalyst preferably comp ⁇ ses lead st ⁇ ps and each lead st ⁇ p preferably has a rectangular cross section and a length approximately equal to the length of the reactor.
  • the lead strips are laid longitudinally within the reactor and packed in juxtaposition across the cross section of the reactor to leave gaps between the lead strips for the flow of hydrogen peroxide and water and oxygen through the reactor.
  • FIG 1 is a process flow diagram of the oxygen generator of this invention
  • Figure 2 illustrates a front sectional view of the oxygen generator
  • Figure 3 illustrates a left side sectional view of the oxygen generator
  • Figure 4 illustrates a right side sectional view of the oxygen generator
  • Figure 5 illustrates a top sectional view of the oxygen generator
  • Figure 6 illustrates a lead stnp used in a reactor of this invention
  • Figure 7 illustrates a cross section of the reactor illustrating the packing of the lead strips within the reactor. Best Mode (or Modes) for Carrying Out the Invention
  • a feed tank (1) is filled with an aqueous hydrogen peroxide at a high concentration of about 35 % by weight.
  • the hydrogen peroxide is fed by gravity through a pipe (3), a feed valve (5) and a regulator (7) to a reactor (9).
  • the decomposition of the peroxide occurs in the reactor (9) so that water vapour and oxygen pass out of the reactor (9) through pipe (11) to the cooling coils (13).
  • the cooling coils (13) condense the water to a liquid and the oxygen and water pass through pipe (15) into a separator or expansion tank (17)
  • the liquid water collects in the base of the tank (17) and the oxygen fills the atmosphere of the tank (17).
  • a return pile (19) permits the oxygen to recirculate to the feed tank (1) to pressurize the system.
  • a draw off pipe (20) with an on ⁇ off valve (21) is provided to remove water from the system.
  • a product pipe (22) with an on ⁇ off valve (23) is provided to draw off the oxygen for use.
  • a pressure gauge (25) is provided on the product pipe (22) to measure the pressure of the oxygen being supplied to a user.
  • Relief valves (27) and (29) are provided to protect against over pressu ⁇ ng of the system. It will be understood by persons skilled in the art that all parts exposed to hydrogen peroxide will be constructed and passivated in a known manner to withstand pressures generated by the system and to avoid the corrosion.
  • FIG. 2-5 The construction and layout of portable unit of this invention is shown in Figures 2-5.
  • the operating equipment is contained in a housing (2) erected over a base (4)
  • the base (4) supports all the equipment by means of conventional support structures generally depicted as (6) which are not descnbed further.
  • a handle (8) is pivotally attached over the housing (2) to facilitate transportation of the unit.
  • the feed tank (1) has a wide mouth (10) so that liquid hydrogen peroxide may be poured into the tank (1) while the on ⁇ off valve (5) is closed.
  • a screw cap (12) seals the mouth (10) of the feed tank (1) prior to operation.
  • the product valve (23) and the drain valve (21) should be closed at the commencement of operation.
  • the regulator valve (7) is preset to shut off the flow of hydrogen peroxide through pipe (3) to the reactor (9) at a predetermined operating pressure. Once flow is interrupted, the decomposition reaction stops and the system reaches equilibrium at the desired operating pressure
  • the reactor (9) used in the preferred embodiment is a schedule 40 gauge pipe containing a catalyst of lead strips (30) (see Figure 6 and 7). Each end of the reactor (9) has a screw cap (14 and 16) to permit the reactor to be opened and closed to replace the lead strips (30). Each cap seals a reactor end about its respective connecting pipe when the system is operational.
  • a screen (32) is provided within each cap to prevent the lead strips from sliding out of the reactor.
  • the lead strips (30) are rectangular in cross section and about as long as the interior of the reactor (9).
  • the strips (30) are packed longitudinally within the reactor (9) to fill its interior cross section insofar as rectangular strips may fill a round pipe.
  • the gaps (34) between the strips (30) allow the peroxide to pass between them to effect decomposition in the presence of the lead catalyst. It may be determined when the strips are ready for replacement by the monitoring the reaction time of the system, i.e. how long it takes to reach operating pressure at start-up.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Inorganic Chemistry (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

Système portable de production d'oxygène utilisant le principe de la décomposition catalytique exothermique d'un peroxyde d'hydrogène aqueux. Le système comprend: un réservoir d'alimentation (1) comportant une embouchure (10) destinée à recevoir le peroxyde d'hydrogène à l'état liquide, un bouchon (12) pour obturer l'embouchure (10) en cours de fonctionnement et une conduite d'évacuation (3); une vanne marche-arrêt (5) commandant la décharge du réservoir d'alimentation; une vanne de régulation (7) arrêtant la décharge du réservoir d'alimentation lorsque la pression du système est égale à une pression prédéterminée; un réacteur (9) contenant un catalyseur constitué de bandes de plomb (30) dans lequel le peroxyde d'hydrogène se décompose; un serpentin (13) pour refroidir et condenser les produits de réaction; un réservoir de séparation (17) destiné à contenir l'eau à l'état liquide et l'oxygène à l'état gazeux; une conduite de retour (19) en direction du réservoir d'alimentation, pour équilibrer la pression dans le système; un drain (20) et un clapet de vidange (21) pour évacuer l'eau; un conduit (22) d'acheminement du produit servant à acheminer l'oxygène destiné à être utilisé par l'utilisateur du système.
PCT/CA1995/000507 1994-08-31 1995-08-31 Generateur d'oxygene portable WO1996006799A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU33388/95A AU3338895A (en) 1994-08-31 1995-08-31 Portable oxygen generator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,131,266 1994-08-31
CA 2131266 CA2131266A1 (fr) 1994-08-31 1994-08-31 Generateur d'oxygene portatif

Publications (1)

Publication Number Publication Date
WO1996006799A1 true WO1996006799A1 (fr) 1996-03-07

Family

ID=4154268

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1995/000507 WO1996006799A1 (fr) 1994-08-31 1995-08-31 Generateur d'oxygene portable

Country Status (3)

Country Link
AU (1) AU3338895A (fr)
CA (1) CA2131266A1 (fr)
WO (1) WO1996006799A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023413A1 (fr) * 1995-12-22 1997-07-03 Geno2X Corporation Generateur d'oxygene portatif
US5973711A (en) * 1997-11-14 1999-10-26 Astro-Med, Inc. Two-sided color printing apparatus
WO2007116271A1 (fr) 2006-03-30 2007-10-18 Hellermanntyton S.R.L. Appareil d'impression pour impression d'un côté et des deux côtés sur des produits support en continu
CN114007677A (zh) * 2019-04-03 2022-02-01 欧希金尼姆有限公司 用于氧气产生的便携式系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129854A1 (fr) * 1983-06-27 1985-01-02 INTEROX Société Anonyme Procédé et appareil pour la production de produits gazeux par décomposition de liquides
BR8601549A (pt) * 1986-03-26 1986-09-02 Promexport International S C L Gerador de oxigenio para solda autogena
US4792435A (en) * 1985-03-24 1988-12-20 Nakajima Dokosho Company Limited Oxygen generating system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129854A1 (fr) * 1983-06-27 1985-01-02 INTEROX Société Anonyme Procédé et appareil pour la production de produits gazeux par décomposition de liquides
US4792435A (en) * 1985-03-24 1988-12-20 Nakajima Dokosho Company Limited Oxygen generating system
BR8601549A (pt) * 1986-03-26 1986-09-02 Promexport International S C L Gerador de oxigenio para solda autogena

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 107, no. 2, 13 July 1987, Columbus, Ohio, US; abstract no. 9933s *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023413A1 (fr) * 1995-12-22 1997-07-03 Geno2X Corporation Generateur d'oxygene portatif
US5973711A (en) * 1997-11-14 1999-10-26 Astro-Med, Inc. Two-sided color printing apparatus
WO2007116271A1 (fr) 2006-03-30 2007-10-18 Hellermanntyton S.R.L. Appareil d'impression pour impression d'un côté et des deux côtés sur des produits support en continu
CN114007677A (zh) * 2019-04-03 2022-02-01 欧希金尼姆有限公司 用于氧气产生的便携式系统
EP3958942A4 (fr) * 2019-04-03 2023-08-02 Oxygenium Ltd. Système portable pour la fabrication d'oxygène

Also Published As

Publication number Publication date
AU3338895A (en) 1996-03-22
CA2131266A1 (fr) 1996-03-01

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