JPH01242076A - Oxygen generation - Google Patents

Abstract

PURPOSE:To attain a constant speed of oxygen generation by dissolving Na carbonate, hydrogen peroxide addition product packaged with a mesh material in water, bringing them into contact with decomposed ferment to generate the oxygen and interrupting the generation of the oxygen so as not to bring the packing material into contact with the water. CONSTITUTION:Granular Na carbonate and a hydrogen peroxide addition product 6 are enclosed by a mesh material 7, and this enclosing material 8 is stored in a sealed container 1. The enclosing material 8 is brought into contact with water 10 in the sealed container 1 to bring the Na carbonate and the hydrogen peroxide addition product 6 dissolved in the water into contact with a decomposed ferment or a decomposed catalyst to generate oxygen 24 previously dissolved or suspended in the water. The gradation of the oxygen is interrupted so as not to bring into contact the enclosing material 8 with the water 10. Consequently, the generation of the oxygen can be properly resumed and the speed of generating the oxygen can be made substantially constant.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves dissolving a sodium carbonate/hydrogen peroxide adduct (also referred to as soda percarbonate) wrapped in a mesh material into water and treating it with a decomposing enzyme or a decomposing catalyst. This invention relates to an oxygen generation method in which oxygen is generated at a substantially constant rate through contact, and oxygen generation can be interrupted as appropriate.

[Conventional technology]

Conventional oxygen generation methods include methods that incorporate oxygen cylinders themselves, methods that use liquid oxygen, and methods that mix hydrogen peroxide, sodium carbonate, and hydrogen peroxide adducts with inorganic catalysts such as diacid and manganese oxide to decompose. 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, sodium carbonate, and hydrogen peroxide adducts by mixing them with an inorganic catalyst are Once the reaction begins, the reaction continues as long as hydrogen peroxide is present and cannot be interrupted.

Furthermore, since the sodium carbonate/hydrogen peroxide adduct is used in powder form, it tends to generate dust and is difficult to handle.

The present invention has been made to solve the above-mentioned problems, and the sodium carbonate/hydrogen peroxide adduct is pre-packaged with a mesh material so that the sodium carbonate/hydrogen peroxide adduct can be handled as a package, for example, in a sealed manner. By tipping the container sideways, pulling up the rope, or draining the liquid around the netting,
Oxygen generation is appropriately interrupted by cutting off contact between the liquid and the rope.
Another object of the present invention is to provide an oxygen generation method that is easy to handle and that can restart oxygen generation by bringing the liquid into contact with the rope, and that can keep the oxygen generation rate almost constant. be.

[Means and effects for solving the problems] In order to achieve the above object, the oxygen generation method of the present invention is as shown in the drawings. The packaged body 8 was packaged in a sealed container 1, and the packaged body 8 was brought into contact with water 10 in the sealed container, and the sodium carbonate/hydrogen peroxide adduct eluted into the water.
It is characterized in that oxygen is generated by contacting a decomposing enzyme or a decomposing catalyst dissolved or suspended in water in advance, and oxygen generation is interrupted by preventing contact between the package 8 and the water 10. In addition, various methods can be used to cut off the contact between the package and water, such as a method of pulling up the package, a method of drawing out water around the package, and the like.

Instead of dissolving or suspending the degrading enzyme or decomposition catalyst in water in advance, attach the degrading enzyme or decomposition catalyst to paper, porous material, etc. and place it in a place where it can come into contact with water in a closed container. Alternatively, instead of dissolving or suspending the degrading enzyme or decomposition catalyst in water in advance, the degrading enzyme or decomposition catalyst is immobilized and stored in a place in a closed container where it can come into contact with water. In some cases.

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.

Catalase can be used by pre-dissolving it in water in an airtight container (method); (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 encapsulated in microcapsules, liposomes, hollow fibers, or ultra-iIi membranes, and (4) a composite method in which these three methods are appropriately combined are used.

Examples of carriers for covalent bonding in fl+ 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 −)
Riazinyl ion exchanger, ion exchange resin, glass beads, nickel silica alumina, zirconia, ceramic, etc. are used, and as carriers for physical adsorption, sand (alkylaminated), carbon, activated carbon, silica gel, alumina, molecular sieve, Titania, stainless steel, calcium phosphate gel, phenoxy acetylate, chitin, agarose gel, cellulose, tannin,
Silicone rubber is used, and carriers for ion binding include Amberlite, Diaion, and Sephadex.
dex), 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
-Triazines, hexamethylene diisothiocyanate, bisdiazobenzidine, etc. are used.

In the wrapping method of (3), the lattice-type wrapping material #1 includes collagen, fibrin, albumin, casein, cellulose fiber, cellulose triacetate, agar,
Calcium alginate, carrageenan, agarose, polyacrylamide, poly-2-hydroxyethyl methacrylic acid, polyvinyl chloride, γ-methylpolyglutamic acid, polystyrene, polyvinylpyrrolidone, polydimethylacrylamide, polyurethane, photocrosslinkable resin, etc. are used, and microcapsules are used. Comprehensive materials include collodion, nylon, polystyrene, polyurea, ethylcellulose, silicone derivatives, phenylsiloxane,
Cellulose nitrate and the like are used, and hydrocarbons, phospholipids and the like are used as enclosing materials for liposomes.

In addition, as a decomposition catalyst, (1) manganese dioxide, (2)
iron, m, silver, nickel, cobalt, manganese, chromium,
Lead, vanadium, tungsten, etc. may be used alone or in combination.

As the rope material used in the method of the present invention, mesh cloth, nonwoven fabric, or a combination of two or more thereof is used.

Examples of mesh cloth include (1) synthetic plastics such as nylon 6, nylon 6.6, nylon 12, polypropylene, polyethylene, ABS, POPA, PBT, PS, etc., (2) silk, wool, cotton, hemp, cellulose, etc. Inorganic fibers such as natural fibers, (3) stainless steel, and ceramics are used, and nonwoven fabrics include 6 nylon, 6.6 nylon, 12 nylon, polypropylene, polyethylene L/7, ABS, POM, PBT,
P.S.

A nonwoven fabric such as cellulose is used, and the combination of two or more types includes a combination of materials and a combination of pore sizes.

Next, the operation of the present invention will be explained.

When the airtight container 1 is placed in the correct position, the sodium carbonate/hydrogen peroxide adduct 6 in the package 8 comes into contact with the water 10 and gradually dissolves in the water, and the decomposition enzyme or decomposition enzyme previously dissolved or suspended in the water Oxygen is generated upon contact with a catalyst, or a degrading enzyme or degrading catalyst that is eluted or transferred into water.

The reaction formula at this time is as follows.

Na1COs・3/21+Jz→Na1COz ” 3
/2oto ” 3/40t↑fi+3/2n,oa→
3/2H20+ 3/40t↑ (3) Below,
The configuration of the present invention will be explained based on the drawings.

1 and 2 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 its upper end and a lid (frame) 3 that is detachable from the opening. The lid part 3 can be sealed tightly by screwing, inserting, fitting, etc.

An inner cylindrical body 5 having a porous body 4 such as a mesh material with holes in its periphery and bottom that allows gas and liquid to freely pass through is housed below the opening 2 in the airtight container 1. A package 8 in which a sodium carbonate/hydrogen peroxide adduct 6 is wrapped with a net material 7 is housed in the cylinder. Therefore, the inner cylinder body 5
As shown in FIG. 1, when a predetermined amount of water 10 is placed in the sealed container 1 in the correct position in the vertical direction, at least a part of the package 8 comes into contact with the water 10, and the sealed container 1 to 2nd
When the package 8 is laid down on its side as shown in the figure, the package 8 is prevented from coming into contact with water 10.

Since the degrading enzyme or the decomposing catalyst is suspended or dissolved in the water 10, 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, flows out from the aeration pipe 12 provided at the end of the introduction pipe, is washed by the air washing water 14 in the washing cylinder 13, and is then passed through the filter 15 and the hose 1.
6 and is sent to the oxygen inhaler 17. 18 is a washing cylinder lid, 20 is a safety valve, 21 is a spacer, 22 is a side surface of the container, 2
3 is the bottom of the container, and 24 is oxygen gas.

Next, an example of an operation for generating oxygen using the oxygen generator shown in FIGS. 1 and 2 will be explained.

First, open the washing cylinder 118 and pour in a predetermined amount of air washing water! +
Do 8. Next, the lid 3 of the airtight container is opened, a predetermined amount of enzyme or catalyst and water are put inside, and the sodium carbonate/hydrogen peroxide adduct wrapped in a mesh material is put inside the inner cylinder 5. The lid 3 is closed, the hose 16 of the oxygen inhaler 17 is connected to the outlet of the filter 15, and the washed and filtered generated oxygen gas is inhaled from the oxygen inhaler 17.

When it is desired to interrupt oxygen generation, as shown in FIG. 2, the container is laid down so that the side surface 22 of the container farther away from the package 8 is at the bottom. If you want to restart oxygen generation,
As shown in FIG. 1, when the reaction is completed, the internal reaction-completed liquid, the package, and the air washing water are discarded.

The net material used in the method of the present invention is sodium carbonate.
When the hydrogen peroxide adduct is dry, only the fine powder falls out, and the wet and hardened one does not fall out, and when submerged in water, one with a pore size that allows water to freely flow in and out is used.

As shown in FIG. 3, as a net material package, a package 8a in which sodium carbonate/hydrogen peroxide adduct is wrapped in a single net material 7, and as shown in FIG. - A package 8b in which the hydrogen peroxide adduct 6 is wrapped in two types of net materials 7a and 7b, and a package in which the sodium carbonate/hydrogen peroxide adduct 6 is wrapped in the net material 7 as shown in FIG. A package 8C made of a fluid-impermeable material such as an aluminum laminate 25 to make it suitable for storage is used. When using this package 8C, the aluminum laminate material 25 is torn and then put into the inner cylinder 5.

Note that three or more types of netting may be used as the package 8b shown in FIG. 4.

In the above example, the degrading enzyme or catalyst is dissolved or suspended in water in the airtight container 1, but it is fixed by adhering the enzyme to paper, porous material, etc. in advance, or by various immobilization methods. The decomposing enzyme body or catalyst body 26, such as a fixed enzyme or catalyst wrapped in a mesh material, is housed in the inner cylinder 5 as shown in FIG. 6, or as shown in FIG. In some cases, it is housed between the inner cylinder body 5 and the side wall 27 of the container.

〔Example〕

Examples and comparative examples of the present invention will be described below.

Comparative Example Into a sealed container 1 shown in FIG. 1, an aqueous solution in which 2.5 - of catalase stock solution was dissolved in water 11 with a water temperature of 13°C was placed, and on the other hand, 100 g of powdered sodium carbonate/hydrogen peroxide adduct was added.
was put into the inner cylinder 5, which had a 12×10 mesh polyethylene mesh stretched over the same part of the moon, without being wrapped in the mesh. The temporal change in the generated oxygen flow rate was as shown in FIG.

Example 1 In a sealed container 2s I shown in Fig. 1, water 7FA I 5°C
3.5 l of water in which 3.5-l of catalase stock solution was dissolved in 171 l of water
On the other hand, 200 g of powdered sodium carbonate/hydrogen peroxide adduct wrapped in a nylon mesh material with an opening diameter of 185 μ x 170 μ and an opening ratio of 67% is placed inside the inner cylinder 5 of the airtight container 1. I invested in it. The inner cylindrical body 5 was not covered with a mesh material with a slit width of 1 cn.
Jt! The change in t over time was as shown in FIG.

Example 2 Water 'rl! An aqueous solution prepared by dissolving 3.7 - of catalase stock solution in 1.71 - of water at 15°C was added, and on the other hand, 200 g of granular carbonate I-IJ -hydrogen peroxide adduct was added as shown in Figure 9. A product wrapped in a net made of the nylon net 28 used in Example 1 and a 20×18 mesh polyethylene net 30 was placed into the inner cylinder 5 of the airtight container 1. Note that the inner cylinder 5 was the same as in Example 1. The temporal change in the generated oxygen flow rate was as shown in FIG.

(Effects of the Invention) Since the present invention is configured as described in Section 1H, it has the following effects.

(1) Interrupt oxygen generation as appropriate by separating the bag containing the sodium carbonate/hydrogen peroxide adduct from the water by overturning the sealed container, pulling it up, or drawing out the surrounding liquid. It is possible to make sodium carbonate IJum.
By returning the bag containing the hydrogen peroxide adduct to its normal position, oxygen generation can be restarted as appropriate.

(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) Since powdered sodium carbonate/hydrogen peroxide adducts are handled in bags, the generation of dust is extremely reduced.

(4) As is clear from the examples, the f11 element generation rate can be kept almost constant and can be generated for a long time.

[Brief explanation of the drawing]

Fig. 1 is an example of an oxygen generator that implements the oxygen generation method of the present invention. Fig. 2 is an explanatory cross-sectional view showing when oxygen is generated, Fig. 2 is an explanatory cross-sectional view when oxygen generation (reaction) is interrupted, and Figs. FIG. 5 is an explanatory diagram showing an example of net packaging for sodium carbonate/hydrogen peroxide adduct; FIGS. 6 and 7 are cross-sectional explanatory diagrams showing other examples of oxygen generators implementing the method of the present invention; FIG. 8 is a graph showing changes over time in the oxygen generation flow rate in Comparative Example and Example 1.2, and FIG. 9 is a front view of the package used in Example 2.・ 1... Airtight container, 2... Opening, 3... Lid, 4...
... Porous body, 5... Inner cylinder body, 6... Carbonic acid) IJ
um/hydrogen peroxide adduct, 7.7a, 7b...net material,
8.8a, 8b, 8C...packaging body, 10...water, 1
DESCRIPTION OF SYMBOLS 1... Introduction pipe, 12... Air diffuser pipe, 13... Washing cylinder, 14... Air washing water, 15... Filter, 16...
・Hose, 17... Oxygen inhaler, 18... Washing cylinder lid, 20... Safety valve, 2 tons... Spacer, 22... Container side, 23... Container bottom, 24... Oxygen gas, 2
5... Aluminum laminate material, 26... Degrading enzyme body or catalyst body, 27... Container side wall, 28... Nylon net material, 30... Polyethylene net material second
figure'. Song Feng-, lt touch#lφ

Claims (1)

[Scope of Claims] 1. A powdery sodium carbonate/hydrogen peroxide adduct is packaged with a mesh material, the package is stored in a sealed container, and the package is brought into contact with water in the sealed container to be submerged. The sodium carbonate/hydrogen peroxide adduct eluted into water is brought into contact with a decomposition enzyme or decomposition catalyst dissolved or suspended in water in advance to generate oxygen, and the package is prevented from coming into contact with water.
An oxygen generation method characterized by interrupting oxygen generation. 2. Instead of dissolving or suspending the degrading enzyme or decomposition catalyst in water in advance, attach the degrading enzyme or decomposition catalyst to paper, porous material, etc. and place it in a place that can come into contact with water in a closed container. 2. The method for generating oxygen according to claim 1, wherein the oxygen generating method comprises storing the oxygen. 3. The method according to claim 1, wherein instead of dissolving or suspending the degrading enzyme or decomposition catalyst in water in advance, the degrading enzyme or decomposition catalyst is immobilized and stored in a part of the closed container that can come into contact with water. How to generate oxygen.