JPH01176201A - Generation of oxygen - Google Patents

Abstract

PURPOSE:To enable generation of O2 or suspension by placing a specific container on a right position or laying down sideways to bring an adduct of Na2 CO3.H2O2 into contact with a decomposing enzyme (catalyst) or non-contact. CONSTITUTION:A given amount of an adduct 6 of Na2CO3.H2O2 is placed in a cylinder 5, air washing water 8 is added to an air washing cylinder 10, the upper part of the cylinder 5 is set, a cover part 3 of a closed container 1 is opened and this set is placed in the container 1. Then a given amount of an enzyme (catalyst) and a given amount of water are added to the container 1 and the cover part 3 is closed to generate an O2 gas. Then the prepared O2 gas is optionally sucked in an O2 suction tool 14. Then when generation of O2 is optionally suspended, the container is laid down sideways to make the side 17 of the container 1 on the bottom. When generation of O2 is restarted, the bottom 16 of the container is laid down and the container 1 is placed in a correct position.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves eluting a sodium carbonate/hydrogen peroxide adduct (also referred to as soda percarbonate) into water and contacting it with a decomposition enzyme or a decomposition catalyst to release oxygen. This invention relates to a method for generating oxygen.

[Conventional technology]

Conventional oxygen generation methods include methods that incorporate oxygen cylinders themselves, methods that use liquid oxygen, and methods that mix hydrogen peroxide and hydrogen peroxide adducts with inorganic catalysts such as manganese dioxide to decompose them. A method of generating oxygen through a reaction is known.

[Problem that the invention seeks to solve]

However, those with built-in oxygen cylinders are expensive because they are disposable, and those with a structure that decomposes hydrogen peroxide or sodium carbonate/hydrogen peroxide adducts by mixing them with inorganic catalysts are difficult to use. Once the reaction begins, the reaction continues as long as hydrogen peroxide is present and cannot be interrupted.

The present invention has been made to solve the above points,
The object of the present invention is to provide an oxygen generation method in which oxygen generation can be appropriately interrupted by tipping the closed container sideways, and oxygen generation can be restarted by placing the closed container in the normal position.

[Means for solving problems]

The oxygen generation method of the present invention will be explained with reference to the drawings.
An opening 2 is provided in the upper part of the sealed container 1, a removable lid 3 is provided in this opening, and a porous body 4 is provided at the end of the sealed container so that gas and liquid can freely pass through the periphery and bottom. A cylindrical body 5 provided with this is housed, a sodium carbonate/hydrogen peroxide adduct 6 is housed in this cylindrical body, and a predetermined amount of water is poured into the airtight container by positioning the cylindrical body in the vertical position. Attach the cylindrical body so that at least a part of the cylindrical body 5 comes into contact with the water 7 when the cylindrical body 7 is put in the container, and the cylindrical body 5 does not come into contact with the water 7 when the closed container is turned sideways. Only when placed in the correct position, the sodium carbonate/hydrogen peroxide adduct eluted into water is brought into contact with a decomposition enzyme or a decomposition catalyst to generate oxygen.

As an enzyme for decomposing hydrogen peroxide, catalase, which is sold as an enzyme agent in the food industry, is used.

Catalase is easily crystallized, is obtained in crystal form from liver, red blood cells, bacteria, etc., and has a molecular weight of about 225,000.

Methods of using catalase include (1) dissolving it in water in a sealed container in advance, (2) simply attaching it to paper, porous material, etc. and storing it in a cylindrical body, (3)
) Examples include a method in which an immobilized enzyme fixed by various immobilization methods is housed in a cylindrical body.

The above-mentioned methods for immobilizing catalase include the carrier binding method in which it is immobilized on an insoluble carrier by +11 covalent bond, ionic bond, physical adsorption, biochemical affinity, etc.; (3) a polymer gel (lattice type) produced by polymerizing or associating low-molecular compounds or transferring a polymer compound from a soluble state to an insoluble state; An entrapment method in which the biocatalyst is enclosed in microcapsules, liposomes, hollow fibers, or ultrafiltration membranes, and (4) a composite method in which these three methods are appropriately combined are used.

Carriers for covalent bonding in the +1+ carrier bonding method include cellulose, agarose, dextran, chitin, collagen, amino acid polymer, polystyrene, ethylene-maleic acid copolymer, polyacrylamide, polyvinyl alcohol, nylon, 4,6-dichloro-3 −)
Diazonyl ion exchangers, ion exchange resins, glass beads, nickel silica alumina, zirconia, ceramics, etc. are used, and as carriers for physical adsorption, sand (
alkylaminated), carbon, activated carbon, silica gel,
Alumina, molecular sheep, titania, stainless steel, calcium phosphate gel, phenoxy acetylate, chitin, agarose gel, cellulose, tannin, silicone rubber, etc. are used, and as carriers for ion binding, Amberlite, Diaion are used. (Diaion), Sephadex (Seph)
adex) s cellulose, etc. are used.

In addition to glutaraldehyde, crosslinking agents used in the crosslinking method (2) include maleimide derivatives, aryl halides, isocyanates, imidoesters, chloro-3
-1 riazines, hexamethylene diisothiocyanate, bisdiazobenzidine, etc. are used.

As for the lattice-type inclusion material in the inclusion method (3),
Collagen, fibrin, albumin, casein, cellulose fiber, cellulose triacetate, agar, calcium alginate, carrageenan, agarose, polyacrylamide, poly-2-hydroxyethyl methacrylic acid, polyvinyl chloride, γ-methyl polyglutamic acid, polystyrene, polyvinylpyrrolidone, poly Dimethylacrylamide, polyurethane, photo-crosslinkable resins, etc. are used as enclosing materials for microcapsules, and collodion, nylon, polystyrene, polyurea, ethyl cellulose, silicone derivatives, phenylsiloxane, cellulose nitrate, etc. are used as enclosing materials for liposomes. Hydrocarbons, phospholipids, etc. are used as the material.

In addition, as a decomposition catalyst, (1) manganese dioxide, (2)
Iron, copper, iron, nickel, cobalt, manganese, chromium, lead, vanadium, tungsten, and the like may be used alone or in combination.

[Effect]

When the airtight container 1 is placed in the correct position, the sodium carbonate/hydrogen peroxide adduct 6 in the cylindrical body 5 comes into contact with the water 7 and gradually dissolves in the water, and the decomposing enzyme or Oxygen is generated by contacting with a decomposition catalyst, a decomposition enzyme or decomposition catalyst that is eluted or transferred from inside the cylindrical body 5 into water, or with an immobilized enzyme or immobilized decomposition catalyst within the cylindrical body.

The reaction formula at this time is as follows.

NaxCOz'3/211zOt"NatCOs +
3/21bO+ 3/40x ↑(1+3/2LO□
→3/2HJ +3/40t ↑ (3)
Hereinafter, the configuration of the present invention will be explained based on the drawings.

1 to 4 show an example of an apparatus for carrying out the method of the invention. Reference numeral 1 denotes a closed container, which has an opening 2 at the top and a lid (column) 3 that is detachable from the opening. The lid part 3 can be sealed tightly by screwing, inserting, fitting, etc.

The ends inside the closed container 1 are provided with a pore size of 0.5 mm to allow free passage of gas and liquid to the periphery and bottom. A cylindrical body 5 provided with a porous body 4 such as a mesh material of O1 to 31 is housed, and a sodium carbonate/hydrogen peroxide adduct 6 is housed in this cylindrical body. Therefore, as shown in FIG. 3, when a predetermined amount of water 7 is put into the closed container 1 with the cylindrical body 5 positioned in the correct position in the vertical direction, at least a part of the cylindrical body 5 is filled with water. When the closed container 1 is turned sideways as shown in FIG. 4, the cylindrical body 5 does not come into contact with the water 7.

Since the degrading enzyme or the decomposing catalyst is suspended or dissolved in water 7 in advance, the sodium carbonate/hydrogen peroxide adduct eluted into the water comes into contact with the degrading enzyme or the decomposing catalyst. , generates oxygen.

The generated oxygen flows into the introduction pipe 11 opened at the same position as the cylinder 5 on the side of the washing cylinder 10 containing air washing water 8 set inside the upper part of the cylinder 5. The air flows out from the air diffuser 12 consisting of a filter at the lower end, is washed with air washing water 8, and is then sent to the oxygen inhaler 14 through the hose 13. 15 is a top surface of the container, 16 is a bottom surface of the container, 17 is a side surface of the container, 18 is a generated oxygen gas, 20 is an opening, 22 is a screw, and 23 is a backing.

Next, an example of an operation for generating oxygen using the oxygen generator shown in FIGS. 1 to 4 will be explained. First, open the lid part 3,
The washing cylinder 10 and the cylindrical body 5 are extracted, and the cylindrical body 5 is removed from the outside.
Put a predetermined amount of sodium carbonate/hydrogen peroxide adduct 6 into the container, put air washing water 8 into the washing cylinder 10, set it inside the upper part of the cylindrical body 5, and put a predetermined amount of water 7 into the closed container 1. At the same time, a predetermined amount of enzyme aqueous solution or catalyst is added to this water. Next, the cylindrical body 5 is set in the airtight container 1,
Close the lid 3. The generated oxygen gas is transferred to the oxygen inhaler 14.
It is inhaled from

When it is desired to interrupt oxygen generation, as shown in FIG. 4, the container is placed sideways so that the side surface 17 is at the bottom. When it is desired to restart oxygen generation, turn the bottom surface 16 of the container downward again as shown in FIG. When the reaction is completed, the internal reaction completion liquid and air washing water are discarded.

Next, another example of the method of the present invention will be explained based on FIGS. 5 and 6. In this example, a decomposition enzyme or a decomposition catalyst is attached or fixed to a fixed object and stored in the lower part of the cylindrical body 5, and a sodium carbonate/hydrogen peroxide adduct 6 is stored in the upper part of the cylindrical body 5. This is a case where no enzyme or catalyst is added to the water in the closed container 1.

Therefore, when the closed container is placed in the correct position as shown in FIG. 5, the sodium carbonate/hydrogen peroxide adduct and the enzyme or catalyst migrate into the water 7 and come into contact and react to generate oxygen. 21 is an immobilized enzyme or catalyst.

〔Example〕

Examples of the present invention will be described below.

Example 1 A suspension of 1 g of manganese dioxide in 11 water was placed in a sealed container as shown in Figure 4, while 100 g of powdered sodium carbonate/hydrogen peroxide adduct was placed in a tube lined with mesh material. It was placed in a sealed container.

When the airtight container was placed in the normal position shown in FIG. 3, oxygen began to be generated, and the amount of oxygen generated changed over time as shown in FIG.

Example 2 Water 11 was placed in the airtight container shown in FIG. Store 100g of granular sodium carbonate/hydrogen peroxide adduct in the upper part covered with mesh material,
This cylindrical body was set in a closed container. 5th sealed container
When placed in the correct position as shown in the figure, oxygen is generated, and when it is placed on its side as shown in Fig. 6, gas generation is interrupted, and when placed in the correct position again, gas generation resumes. 0 The change in the amount of generated oxygen over time is shown in Fig. 8. Met.

Example 3 An aqueous solution in which 2td of catalase stock solution was dissolved in water IE,
The mixture was placed in a closed container shown in FIG. 4, and 100 g of powdered sodium carbonate/hydrogen peroxide adduct was placed in a cylindrical body covered with a mesh material and set in the closed container. Place a third airtight container
When the device was placed in the normal position shown in the figure, oxygen was generated, and when the device was turned sideways as shown in FIG. 4, gas generation was interrupted, and when the device was placed in the normal position again, gas generation resumed. The temporal change in the amount of oxygen generated was as shown in Figure 8.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following effects.

(11 By turning the sealed container on its side, oxygen generation can be interrupted as appropriate, and by returning the sealed container to its normal position,
Oxygen generation can be resumed.

(2) In the normal position, it is possible to have a structure in which there is no opening/closing part in the liquid contact part, and the risk of liquid leakage is extremely reduced.

(3) Both methods can be adopted, including a method in which the enzyme or decomposition catalyst is dissolved in water in advance, and a method in which the enzyme or decomposition catalyst is stored in a cylindrical body.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of an oxygen generator for carrying out the oxygen generation method of the present invention, Fig. 2 is an explanatory longitudinal cross-sectional view of the same, and Fig. 3 is a diagram showing an example of an oxygen generator in which a decomposition enzyme or a decomposition catalyst is suspended or dissolved in water. A perspective view showing the state of the oxygen generator at the time of reaction (normal position),
Figure 4 is a perspective view showing when oxygen generation is interrupted (sideways position);
Figure 5 is a perspective view showing the state of the oxygen generator during reaction (in the normal position) when the degrading enzyme or decomposition catalyst is attached to or immobilized on a fixed object and stored in the lower part of the cylindrical body, and Figure 6 is the oxygen generator. FIG. 7 is a perspective view showing when generation is interrupted (sideways position); FIG. 7 is a graph showing changes over time in the amount of oxygen generated in Example 1; FIG.
The figure is a graph showing changes over time in the amount of oxygen generated in Example 2.3. 1... Airtight container, 2... Opening, 3... Lid, 4...
Porous body, 5 Cylindrical body, 6 Sodium carbonate/hydrogen peroxide adduct, 7 Water, 8 Air washing water,
1o... Washing cylinder, 11... Introduction pipe, 12... Diffusion pipe, 13... Hose, 14... Oxygen inhaler, 15...
... Container top surface, 16... Container bottom surface, 17... Container side surface, 18... Generated oxygen gas, 20... Opening, 21
...immobilized enzyme or catalyst, 22...screw, 23.
...Packing Fig. 4 Fig. 7 E + Closed (G) Fig. 0 Corner closed (Ke)

Claims (1)

[Claims] 1 An opening is provided at the top of the sealed container, a removable lid is provided on this opening, and a porous body is provided at the end of the sealed container so that gas and liquid can freely pass through the periphery and bottom. When a cylindrical body is stored, a sodium carbonate/hydrogen peroxide adduct is stored in the cylindrical body, the cylindrical body is placed in the vertical position, and a predetermined amount of water is poured into the airtight container. , at least a part of the cylindrical body came into contact with water, and the cylindrical body was attached so that the cylindrical body would not come into contact with water when the closed container was turned sideways, and it was only eluted into the water when the closed container was placed in the upright position. An oxygen generation method characterized by bringing a sodium carbonate/hydrogen peroxide adduct into contact with a decomposition enzyme or a decomposition catalyst to generate oxygen.