WO2020071324A1

WO2020071324A1 - Chlorine dioxide generating device

Info

Publication number: WO2020071324A1
Application number: PCT/JP2019/038549
Authority: WO
Inventors: 奥山麻依子; 米田裕治
Original assignee: 大幸薬品株式会社
Priority date: 2018-10-01
Filing date: 2019-09-30
Publication date: 2020-04-09
Also published as: TW202019812A; KR20210062679A; CN112739644A; JPWO2020071324A1; JP7412772B2

Abstract

A chlorine dioxide generating device X that generates chlorine dioxide gas by reacting chlorite serving as a first component with a second component 2 that generates chlorine dioxide gas by reacting with the chlorite includes: an outer container 10 which is configured so as to be deformable due to an external force applied thereto and such that a liquid can be drained; a breakable inner container 20 which is accommodated inside the outer container 10 and seals an aqueous chlorite solution 1; and a bag-like body 40 which accommodates a solid composition 30 that contains the second component 2 and the outer container 10 and has an air permeable part 41 that has air permeability.

Description

Chlorine dioxide generator

The present invention relates to a chlorine dioxide generator that generates chlorine dioxide gas by reacting chlorite as a first component and a second component that reacts with the chlorite to generate chlorine dioxide gas. .

器具 Conventionally, there has been known an instrument or an apparatus for reacting a chlorite solution with an acidic substance to generate chlorine dioxide gas (for example, Patent Document 1).

JP 2007-145654 A

塩素 However, conventional chlorine dioxide generators were not developed with portability in mind, but were often of the type that was placed on a desk or floor, or were large. In addition, there is a problem that even if the device is simply made compact and can be carried (portable), there is a risk of liquid dripping from inside the device. Although the liquid dripping is achieved by ensuring the tightness of the container, if the tightness of the container is ensured, on the other hand, there is a new problem that the release of chlorine dioxide gas is delayed.

In addition, for example, when it is desired to fumigate a room / room or other similar space with chlorine dioxide gas, it is necessary to generate a large amount of chlorine dioxide gas at a high concentration to some extent and quickly. In order to increase the concentration of the generated chlorine dioxide gas, for example, it is conceivable to increase the concentration of the acidic substance used. However, high-concentration acidic substances, for example, high-concentration sulfuric acid, are dangerous substances, and require careful handling and are dangerous. If the concentration of the acidic substance is reduced in order to avoid the danger, there has been a problem that the generation efficiency of chlorine dioxide gas is reduced and a satisfactory fumigation treatment cannot be performed.

The present invention has been made in view of the above circumstances, and has as its object to reduce the size of a device, to allow the source of chlorine dioxide gas to be safely carried (portable), and to quickly remove a large amount of chlorine dioxide gas. An object of the present invention is to provide a chlorine dioxide generator capable of generating chlorine dioxide.

The first feature configuration of the chlorine dioxide generator according to the present invention for achieving the above object is a chlorite as a first component, and a second component that reacts with the chlorite to generate chlorine dioxide gas. In a chlorine dioxide generator that reacts with components to generate chlorine dioxide gas, an outer container that is deformable by applying an external force and is configured to be capable of draining a liquid, and is housed inside the outer container. A frangible inner container sealed with an aqueous chlorite solution, a bag-like body containing the solid composition containing the second component and the outer container, and provided with a vent portion having air permeability, It is in the point with.

According to this configuration, since the chlorine dioxide generator can be configured by enclosing the outer container containing the inner container and the solid composition in the bag-like body, the device can be downsized.

Further, according to this configuration, since the bag-like body contains the solid composition containing the second component and the outer container, the solid composition containing the second component and the aqueous chlorite solution are not contacted. Can be stored in a state. In this state, by applying an external force to the outer container to deform it, the easily breakable inner container housed therein can be easily broken. At this time, the aqueous chlorite solution flows out of the inner container into the outer container. Since the outer container is configured to drain the liquid, the aqueous chlorite solution is discharged from the outer container and comes into contact with the solid composition containing the second component, thereby generating chlorine dioxide gas. The chlorine dioxide gas generated in the bag-like body is released to the outside of the bag-like body from a ventilation part having air permeability.

With the release of chlorine dioxide gas from the ventilation section, the concentration of chlorine dioxide gas in the fumigation chamber increases, and chlorine dioxide treatment (bacteria / fungus sterilization processing, virus inactivation processing, Pest control, etc.) for a predetermined period of time. The chlorine dioxide gas at this time can be generated in a large amount and quickly. That is, after a large amount of chlorine dioxide gas is generated in a short time, the amount of chlorine dioxide gas generated decreases after a while. Therefore, the fumigation processing time (evacuation time for a person) of the space in the fumigation room can be shortened, and a person can immediately enter the fumigation room after ventilation.

In the chlorine dioxide generator of this configuration, the reason why a large amount of chlorine dioxide gas is generated temporarily is that the second component is contained in the solid composition, so that free water in the reaction system can be reduced. . That is, the second component can be reacted in a state that is higher than the apparent concentration of the second component in the solid composition. As a result, the contact area (reaction opportunity) between chlorite and the second component is increased, and the reaction rate is increased. As a result, the reaction becomes dramatic and the chlorine dioxide gas is generated transiently (rapidly). Can be

Further, according to the present configuration, the bag-like body can release the chlorine dioxide gas from the ventilating part having air permeability.

The second characteristic configuration of the chlorine dioxide generator according to the present invention is to react a chlorite as a first component with a second component that generates chlorine dioxide gas by reacting with the chlorite. In a chlorine dioxide generator that generates chlorine dioxide gas, the outer container is deformable by applying an external force, and is configured to be capable of discharging liquid, and is contained inside the outer container, and the second component is An easily breakable inner container sealed with an aqueous solution, and a bag-like body containing the chlorite-containing solid composition and the outer container, and having a vent portion having air permeability. is there.

Further, according to this configuration, since the bag-shaped body contains the solid composition containing chlorite and the outer container, the solid composition containing chlorite and the aqueous solution of the second component are used. It can be stored in a non-contact state. In this state, by applying an external force to the outer container to deform it, the easily breakable inner container housed therein can be easily broken. At this time, the aqueous solution of the second component flows out of the inner container into the outer container. Since the outer container is configured to drain the liquid, the aqueous solution of the second component is discharged from the outer container and comes into contact with the solid composition containing chlorite, thereby generating chlorine dioxide gas. The chlorine dioxide gas generated in the bag-like body is released to the outside of the bag-like body from a ventilation part having air permeability.

第三 A third characteristic configuration of the chlorine dioxide generator according to the present invention resides in that the bag-like body is formed in a rectangular shape in a top view, and the ventilation portion is formed in a planar shape.

According to this configuration, the ventilation portion can be formed on at least one side of the back surface of the bag. Thereby, chlorine dioxide generated inside the bag-like body can be released from at least one entire surface of the bag-like body, so that a large amount of chlorine dioxide gas generated is quickly released to the outside of the bag-like body. be able to.

四 A fourth characteristic configuration of the chlorine dioxide generator according to the present invention is that the ventilation section is formed by processing a synthetic resin material into a nonwoven fabric.

According to this configuration, the ventilation section can be made gas-permeable and liquid-impermeable.

五 A fifth feature of the chlorine dioxide generator according to the present invention is that the solid composition contains a porous substance as a carrier.

According to this configuration, since the porous substance serves as a carrier for supporting the first component or the second component, the first component or the second component can be stably held inside the bag.

六 A sixth characteristic configuration of the chlorine dioxide generator according to the present invention resides in that the solid composition is granulated.

According to this configuration, by making the solid composition granular, the solid composition can easily move freely inside the bag-shaped body. Therefore, for example, when the chlorite aqueous solution is in contact with the solid composition containing the second component, if the solid composition is allowed to move freely, for example, by moving the bag-like body left and right, The reaction between the aqueous acid salt solution and the second component is performed efficiently, and chlorine dioxide gas can be generated according to the theoretical value of the reaction.

A seventh characteristic configuration of the chlorine dioxide generator according to the present invention is that the outer container and the inner container are configured in a tubular shape, and the outer container has outer container lids at both ends, and each of the two ends of the inner container is provided. Are provided in contact with and supported by the respective inner surfaces of the outer container lids provided at both ends of the outer container.

According to this configuration, since both ends of the inner container can be held between the pair of outer container lids, it is possible to prevent the inner container from moving inside the outer container. Thus, it is possible to prevent the inner container from moving inside the outer container when the chlorine dioxide generator is carried or the like and from being damaged by an impact hitting the inner surface of the outer container.

The eighth feature of the chlorine dioxide generator according to the present invention resides in that the second component is an acidic substance.

According to this configuration, by making the second component that reacts with chlorite to generate chlorine dioxide gas an acidic substance, the chlorite reacts with the acidic substance to easily generate chlorine dioxide gas. Can be done.

塩素 A ninth characteristic configuration of the chlorine dioxide generator according to the present invention is that the acidic substance is sulfuric acid and the chlorite is sodium chlorite or potassium chlorite.

According to this configuration, sulfuric acid as an acidic substance has excellent storage stability, does not generate corrosive gas, and does not change in concentration even after being supported on a porous substance, so that it is excellent in handling. Further, since sodium chlorite or potassium chlorite as chlorite is easily available, the present invention can be easily implemented.

A tenth feature of the chlorine dioxide generator according to the present invention is that the concentration of the acidic substance is 30% by weight or less and the concentration of the chlorite is 0.1 to 30% by weight.

According to this configuration, when the concentration of the acidic substance exceeds 30% by weight, the viscosity of the solution becomes high and it becomes difficult to disperse, and the dispersion of the prepared acidic substance becomes unfavorable. When the concentration of chlorite is less than 0.1% by weight, there is a possibility that a problem of insufficient chlorite in the generation of chlorine dioxide gas may occur. There is a possibility that the problem that the chlorate is saturated and crystals are easily precipitated may occur. Therefore, considering safety, stability, chlorine dioxide gas generation efficiency, and the like, the content is preferably 0.1 to 30% by weight.

It is the schematic which shows the chlorine dioxide generator of this invention. It is the schematic which shows the apparatus which collects chlorine dioxide gas. It is the graph which showed the relationship between the collection time and collection amount of chlorine dioxide gas. It is the graph which showed the relationship between the amount of sodium chlorite and the collection amount of chlorine dioxide gas.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The chlorine dioxide generator according to the present invention generates chlorine dioxide gas by reacting chlorite as a first component with a second component that reacts with the chlorite to generate chlorine dioxide gas. .

As shown in FIG. 1, the chlorine dioxide generator X of the present invention is deformable by applying an external force and accommodates an outer container 10 configured to be capable of draining a liquid and an inside of the outer container 10. And a bag containing the easily breakable inner container 20 in which the chlorite aqueous solution 1 is sealed, the solid composition 30 containing the second component 2 and the outer container 10, and provided with a vent portion 41 having air permeability. And a state body 40.

The second component may be any substance that generates chlorine dioxide gas by reacting with chlorite, such as an acidic substance, or chlorine dioxide by reacting alone with chlorite without containing an acidic substance. Can be generated. In the present embodiment, a case where the second component 2 is an acidic substance will be described. It is preferable that the acidic substance be an acidic substance that shows acidity by being dissolved in water.

(Outer container)
The outer container 10 can be deformed by applying an external force, and may have any mode as long as it has a space in which the inner container 20 can be accommodated. As a material exhibiting such an aspect, for example, a flexible material is exemplified. The term "flexibility" as used herein means a material that can be easily deformed by being curved, for example, in an arc shape when an external force is applied, and easily return to an original shape when the applied force is released. Specific examples of the flexible resin material include polyethylene, polypropylene, and silicon.

形状 Examples of the shape of the outer container 10 include a tubular shape (test tubular shape), a stick shape, a bag shape, and a box shape, but the shape is not limited thereto. For example, when the outer container 10 is formed in a bag shape, the inner container 20 is housed inside the bag-shaped outer container 10. When an external force is applied, the bag-shaped outer container 10 may be pressed and deformed to such an extent that the inner container 20 is broken. In the present embodiment, a case where the outer container 10 has a tubular shape will be described.

The outer container 10 is configured to be able to drain the liquid. In the present embodiment, a case will be described in which an outer container lid 11 having a plurality of small openings 11a (for example, five openings having a diameter of 2 mm) is provided at both ends of the outer container 10. That is, the liquid can be drained through the opening 11a formed in the outer container lid 11.

In addition, as an aspect of holding the inner container 20 inside the outer container 10, each of both ends of the inner container 20 is supported by being in contact with the inner surface of each of the outer container lids 11 provided at both ends of the outer container 10. Good to do. With this configuration, since both ends of the inner container 20 can be held by being sandwiched between the pair of outer container lids 11, the inner container 20 can be prevented from moving inside the outer container 10. Thus, it is possible to prevent the inner container 20 from being damaged by the impact of the inner container 20 moving inside the outer container 10 and hitting the inner surface of the outer container 10 when the chlorine dioxide generator X is carried or the like.

(Inner container)
The inner container 20 is a container that can seal the chlorite aqueous solution 1 and is easily broken. The term “easy destruction” as used herein refers to a property that can be easily broken or cracked by applying a force from the outside to deform or bend (or to bend). It must not be damaged by shaking or light impact during storage. Examples of easily breakable enclosures include glass ampules and relatively thin plastic containers. When a plastic container is used as the easily breakable inner container 20, a fragile portion is artificially provided in the container in advance, and a force is applied from the outside to bend (or attempt to bend), so that the fragile portion is bent. It can also be configured to crack or crack (break).

形状 The shape of the inner container 20 is exemplified by a tube (test tube), a stick, a bag, a box, and the like, but is not limited thereto. In the present embodiment, a case where the shape of the inner container 20 is tubular will be described.

(Bag-like body)
The bag-shaped body 40 is provided with a ventilation part 41 having air permeability. In the present embodiment, a description will be given of a mode in which the bag-shaped body 40 is formed in a rectangular shape in a top view, and the ventilation section 41 is formed in a planar shape. However, the present invention is not limited thereto. In this configuration, the ventilation part 41 can be formed on at least one side of the back surface of the bag-shaped body 40. Thereby, chlorine dioxide generated inside the bag-shaped body 40 can be released from at least one entire surface of the bag-shaped body 40, so that a large amount of chlorine dioxide gas generated can be quickly discharged to the outside of the bag-shaped body 40. Can be released.

At least one of the front and back surfaces of the bag 40 is gas-permeable and liquid-impermeable. That is, the bag-shaped body 40 may have a gas-liquid and liquid-impermeable front surface and a gas-liquid impermeable back surface, or a gas-liquid impermeable surface and a gas-permeable and liquid impermeable back surface. Both the front and back surfaces may be gas-permeable and liquid-impermeable. At this time, the bag-shaped body 40 may be in a mode in which at least one of the front and back surfaces is translucent.
The peripheral portion 40a of the bag-like body 40 may be bonded by heat sealing, ultrasonic sealing, an adhesive or the like.

するには In order to make the front or back surface of the bag-shaped body 40 gas-permeable and liquid-impermeable, the ventilation portion 41 provided on the front or back surface may be formed by processing a synthetic resin material into a nonwoven fabric. As the nonwoven fabric, for example, a sheet of high-density polyethylene nonwoven fabric can be used, but the present invention is not limited to this. As the nonwoven fabric, for example, Exepol (registered trademark, manufactured by Mitsubishi Chemical Corporation), Tyvek (registered trademark, manufactured by Dupont), Gore-Tex (registered trademark, manufactured by WL Gore & Associates) and the like can be used. It is not limited to this.

In order to make the front surface or the back surface of the bag-shaped body 40 gas-liquid impermeable, acrylonitrile styrene (AS) resin, acrylonitrile butadiene styrene (ABS) resin, ethylene vinyl alcohol (EVOH) resin, vinyl chloride resin, polyethylene resin However, a sheet made of a synthetic resin material such as a polypropylene resin or a polyolefin resin can be used, but is not limited thereto.

(Chlorite)
The chlorite used in the present invention includes, for example, alkali metal chlorite and alkaline earth metal chlorite. Examples of the alkali metal chlorite include sodium chlorite, potassium chlorite, and lithium chlorite. Examples of the alkaline earth metal chlorite include calcium chlorite, magnesium chlorite, and sodium chlorite. Barium chlorate. Of these, sodium chlorite and potassium chlorite are preferred, and sodium chlorite is most preferred, in terms of availability. One of these alkali chlorites may be used alone, or two or more thereof may be used in combination.

塩素 The proportion of chlorite in the aqueous chlorite solution is preferably 0.1% by weight to 30% by weight. If the amount is less than 0.1% by weight, there may be a problem that chlorite is insufficient in generating chlorine dioxide gas. If the amount exceeds 30% by weight, chlorite is saturated and crystals are formed. There is a possibility that a problem of easy precipitation may occur. In consideration of safety, stability, generation efficiency of chlorine dioxide gas, and the like, 15% by weight to 25% by weight is preferable, and a more preferable range is 20% by weight to 25% by weight.

(Acidic substance)
Examples of the acidic substance that can be used in the present invention include inorganic acids and organic acids and salts thereof.For example, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, boric acid, metaphosphoric acid, pyrophosphoric acid, inorganic acids such as sulfamic acid, formic acid, Acetic acid, propionic acid, butyric acid, lactic acid, pyruvic acid, citric acid, malic acid, tartaric acid, gluconic acid, glycolic acid, fumaric acid, malonic acid, maleic acid, oxalic acid, succinic acid, acrylic acid, crotonic acid, oxalic acid, Organic acids, such as glutaric acid, and salts thereof are mentioned. Examples of the salt of an inorganic acid include a salt of dihydrogen phosphate (a sodium salt and a potassium salt, the same applies hereinafter), and a mixture of a dihydrogen phosphate and a monohydrogen phosphate.
Among them, it is preferable to use sulfuric acid because it has excellent storage stability, does not generate corrosive gas, and does not cause a change in concentration even after being supported (impregnated) on a porous substance. As for the concentration of sulfuric acid, the final concentration of the sulfuric acid contained in the solid composition 30 is preferably 30% by weight or less, and more preferably 10% by weight or less from the viewpoint of safety. As the acidic substance, one type may be used alone, or two or more types may be used in combination.

(Solid composition)
The solid composition 30 may be in a form containing a second component (acidic substance), and for example, may be in the form of a crystal of an acidic substance or a porous substance containing an acidic substance. In the present embodiment, a case where the solid composition 30 includes a porous substance as a carrier will be described. That is, the above-mentioned "solid composition 30 containing the second component 2" is a porous substance containing an acidic substance which becomes acidic when dissolved in water.

The solid composition 30 is preferably in the form of particles. By making the solid composition 30 granular, the solid composition 30 can easily move freely inside the bag-like body 40. Therefore, when the aqueous chlorite solution is in contact with the solid composition 30 containing the second component (acidic substance), the solid composition 30 can move freely, for example, by moving the bag-shaped body 40 left and right. By doing so, the reaction between the aqueous chlorite solution and the acidic substance is efficiently performed, and it is possible to generate chlorine dioxide gas according to the theoretical value of the reaction.

As the above-mentioned porous substance, for example, a porous material or a baked aggregate can be used, but is not limited thereto. Examples of the porous material include porous silica, sepiolite, montmorillonite, diatomaceous earth, talc, zeolite, activated clay, molecular sieve, and activated alumina. Above all, it is preferable to use porous silica because it is easily available, has excellent porosity (the porous space is wide), and easily contains an acidic substance or chlorite. The specific surface area of such porous silica is not particularly limited.
As the fired aggregate, for example, bones, shells, and corals of animals (including mammals, fish, and birds) that have been fired to obtain crushed pieces, particles, or powder can be used.

粒径 The particle size of such a porous substance is preferably, for example, about 0.05 to 10 mm. Further, it is preferable to select a porous substance having a water adsorption amount of 5% or more at room temperature. In addition, it is preferable to select a porous substance having a repose angle of 50 ° or less, preferably 45 ° or less, more preferably 40 ° or less, and still more preferably 30 ° or less. For example, the repose angle of Carract Q-10 (manufactured by Fuji Silysia Chemical Ltd.), which is a kind of porous silica, has a particle size of 1.7-4.0 mm: 19 °, 75-500 μm: 23 °, and Carract G The angle of repose of -10 (manufactured by Fuji Silysia Chemical Ltd.) has a particle size of 0.35-1.7 mm: 35 °.

塩素 In the chlorine dioxide generator X having such a configuration, the easily deformable inner container 20 housed therein can be easily broken by applying an external force to the outer container 10 to deform it. At this time, the aqueous chlorite solution flows out of the inner container 20 into the outer container 10. Since the outer container 10 is configured to be able to drain the liquid through the opening 11a, the aqueous chlorite solution is discharged from the outer container 10 and comes into contact with the solid composition 30 containing an acidic substance (second component). As a result, chlorine dioxide gas is generated. The chlorine dioxide gas generated in the bag-like body 40 is released to the outside of the bag-like body 40 from the ventilation part 41 having air permeability.

The place (fumigation place) where the chlorine dioxide generator X of the present invention is used is not particularly limited. For example, it is used in general homes (living rooms, entrances, restrooms, kitchens, etc.), for industrial use (for factories), hospitals, and hospitals. It can be used in various situations, such as medical sites such as clinics and nursing homes, and public facilities such as schools, station buildings, and public toilets. Further, it can be used not only in a relatively large space such as an indoor space where people can live, but also in a narrow space such as a refrigerator, a clog box, and a car (car, bus, train). As described above, the size of the applicable space of the generator of the present invention is not particularly limited, but is preferably a closed space.

Since chlorine dioxide gas has a very high solubility, a porous material such as zeolite or silica gel is used as a carrier in order to reduce free water in the reaction system as much as possible when reacting. By reducing free water in the reaction system, the reaction rate of acidic substances such as sulfuric acid and chlorite can be increased, and the amount of dissolved chlorine dioxide gas can be reduced. Therefore, it is possible to substantially generate the chlorine dioxide gas at a high concentration in a short period (transient).
As described above, by using the chlorine dioxide generator X of the present invention, a large amount of chlorine dioxide gas can be quickly generated. Therefore, the fumigation processing time (evacuation time for a person) of the space in the fumigation room can be shortened, and a person can immediately enter the fumigation room after ventilation.

[Another embodiment]
In the above-described embodiment, the case where the chlorite aqueous solution 1 is sealed in the inner container 20 and the solid composition 30 containing the second component 2 of the acidic substance is used has been described. On the other hand, in this embodiment, the case where the aqueous solution of the second component 2 as an acidic substance is sealed in the inner container 20 and the solid composition 30 containing chlorite is used will be described.

That is, the chlorine dioxide generator X of another embodiment can be deformed by applying an external force, and the outer container 10 is configured to be able to drain the liquid, and is housed inside the outer container 10, A bag containing an easily destructible inner container 20 sealed with an aqueous solution of the component (acidic substance), a chlorite-containing solid composition 30 and an outer container 10, and provided with a ventilating part 41 having air permeability. And a body 40.

塩素 In the chlorine dioxide generator X having such a configuration, the easily deformable inner container 20 housed therein can be easily broken by applying an external force to the outer container 10 to deform it. At this time, the aqueous solution of the acidic substance flows out of the inner container 20 into the outer container 10. Since the outer container 10 is configured to be able to drain the liquid through the opening 11a, the aqueous solution of the acidic substance is discharged from the outer container 10 and comes into contact with the solid composition 30 containing chlorite. Chlorine dioxide gas is generated. The chlorine dioxide gas generated in the bag-like body 40 is released to the outside of the bag-like body 40 from the ventilation part 41 having air permeability.

As the acidic substance that can be used in the present embodiment, the above-described acidic substance can be used. When sulfuric acid is used as the acidic substance, the concentration of the aqueous solution is preferably 30% by weight or less.
In the present embodiment, the final concentration of chlorite contained in the solid composition 30 is preferably 30% by weight or less, and more preferably 20 to 25% by weight. It is preferable from the viewpoints of properties and the generation efficiency of chlorine dioxide gas.

[Example 1]
Chlorine dioxide was generated using the chlorine dioxide generator X of the present invention, and the amount of generated chlorine dioxide gas was determined. The chlorine dioxide generator X includes a polypropylene resin tube (outer container 10: Φ20, total length 150 mm) that can be deformed by applying an external force, and a cylindrical glass ampule (inner container 20: Φ8) sealed with an aqueous solution of sodium chlorite. Caractact Q-10 (particle size 1.7-4.0 mm, manufactured by Fuji Silysia Chemical Ltd.) (solid composition 30) impregnated with sulfuric acid as an acidic substance by a conventionally known method, and a resin cylinder. And a nonwoven bag (bag-like body 40: 120 mm × 200 mm) containing the above. At both ends of the resin cylinder (outer container 10), outer container lids 11 each having five openings 11a each having a diameter of 2 mm were mounted. The nonwoven fabric bag (bag-like body 40) uses a sheet made of Tyvek (registered trademark, manufactured by DuPont) on the front surface and a vinyl chloride resin on the back surface, and heat seals both so that the seal width of the peripheral portion 40a is 10 mm. did. The amount of sodium chlorite contained in the aqueous solution of sodium chlorite was 890 mg, the amount of sulfuric acid contained in the solid composition 30 was 260 mg, and the theoretical value of chlorine dioxide gas generated was 330 mg.

After deforming the resin tube (outer container 10) from the outside of the non-woven bag (bag-like body 40) to break the glass ampule (inner container 20) housed inside the resin tube, quickly shake it up and down several times, A chlorine dioxide gas was generated by contacting an aqueous solution of sodium chlorate with silica gel impregnated with sulfuric acid (solid composition 30). As shown in FIG. 2, the chlorine dioxide generator X in which chlorine dioxide gas is generated is immediately placed in a container 51 made of vinyl chloride, and the chlorine dioxide is added to an aqueous solution (200 mL) of potassium iodide contained in another container 52. The gas was dissolved to collect chlorine dioxide gas. The collection was completed at a predetermined time after the start of the reaction, and the amount of the collected chlorine dioxide gas was determined by the following titration method. The results are shown in Table 1 and FIG.

Titration method 5 mL of an aqueous potassium iodide solution in which chlorine dioxide gas was dissolved was collected, and subjected to iodine titration using a 0.1 mol / L sodium thiosulfate solution under acidic conditions. According to the following calculation formula, the amount (mg) of chlorine dioxide gas collected in the aqueous potassium iodide solution was calculated.
Chlorine dioxide (mg) = titration x F x 1.349 / 5 x 200 (F: factor of 0.1 mol / L sodium thiosulfate solution) (1.349: 1 mL of 0.1 mol / L sodium thiosulfate solution is (Corresponds to 1.349 mg of chlorine)

As a result, it was recognized that the chlorine dioxide gas generated from the chlorine dioxide generator X of the present invention reached a peak 30 minutes after the generation, and thereafter, the amount of the generated chlorine dioxide gas gradually decreased. Since the amount of chlorine dioxide gas 30 minutes after the generation reached 86% of the theoretical value, it was recognized that chlorine dioxide gas was efficiently generated in a short time.

[Example 2]
In the chlorine dioxide generator X of Example 1, the amount of sodium chlorite contained in the aqueous sodium chlorite solution was variously changed to 400 to 1200 mg, and the amount of sulfuric acid contained in the solid composition 30 was varied to 115 to 350 mg. The changed gas was used to generate chlorine dioxide, and the gas amount of the collected chlorine dioxide was determined. The results are shown in Table 2 and FIG.

As a result, it was found that, in the chlorine dioxide generator X, the amount of chlorine dioxide gas collected increases linearly as the amount of sodium chlorite contained in the aqueous sodium chlorite solution increases. In addition, since the reaction efficiency was almost 100%, it was recognized that chlorine dioxide gas was generated efficiently according to the theoretical value. Therefore, in the chlorine dioxide generator X of the present invention, it was recognized that the amount of chlorine dioxide gas to be generated can be easily adjusted by adjusting the amount of sodium chlorite contained in the aqueous solution of sodium chlorite.

The present invention relates to a chlorine dioxide generator that generates chlorine dioxide gas by reacting chlorite as a first component and a second component that reacts with the chlorite to generate chlorine dioxide gas. Available.

X Chlorine dioxide generator 1 Chlorite aqueous solution 2 Second component 10 Outer vessel 11 Outer vessel lid 20 Inner vessel 30 Solid composition 40 Bag-shaped body 41 Ventilation section

Claims

In a chlorine dioxide generator that reacts chlorite as a first component and a second component that generates chlorine dioxide gas by reacting with the chlorite to generate chlorine dioxide gas,
An outer container that is deformable by applying an external force and is configured to be able to drain liquid,
An easily breakable inner container housed inside the outer container and sealing the chlorite aqueous solution,
A bag-like body containing the solid composition containing the second component and the outer container, and provided with a ventilating part having air permeability.
In a chlorine dioxide generator that reacts chlorite as a first component and a second component that generates chlorine dioxide gas by reacting with the chlorite to generate chlorine dioxide gas,
An outer container that is deformable by applying an external force and is configured to be able to drain liquid,
An easily destructible inner container housed inside the outer container and sealing the aqueous solution of the second component,
A chlorine dioxide generator comprising: a bag-like body containing the chlorite-containing solid composition and the outer container, and having a vent portion having air permeability.
The chlorine dioxide generator according to claim 1 or 2, wherein the bag-like body is formed in a rectangular shape in a top view, and the ventilation section is formed in a planar shape.
The chlorine dioxide generator according to any one of claims 1 to 3, wherein the ventilation portion is formed by processing a synthetic resin material into a nonwoven fabric.
The chlorine dioxide generator according to any one of claims 1 to 4, wherein the solid composition contains a porous substance as a carrier.
塩素 The chlorine dioxide generator according to any one of claims 1 to 5, wherein the solid composition is granular.
The outer container and the inner container are formed in a tubular shape, and the outer container is provided with outer container lids at both ends of the outer container, and the outer container lid is provided with both ends of the inner container at both ends of the outer container. The chlorine dioxide generator according to any one of claims 1 to 6, wherein the chlorine dioxide generator is in contact with and supported on the inner surface of each of the portions.
The chlorine dioxide generator according to any one of claims 1 to 7, wherein the second component is an acidic substance.
The chlorine dioxide generator according to claim 8, wherein the acidic substance is sulfuric acid, and the chlorite is sodium chlorite or potassium chlorite.
10. The chlorine dioxide generator according to claim 8, wherein the concentration of the acidic substance is 30% by weight or less, and the concentration of the chlorite is 0.1 to 30% by weight.