JPWO2020071324A1 - Chlorine dioxide generator - Google Patents

Abstract

External force in the chlorine dioxide generator X that generates chlorine dioxide gas by reacting the chlorite, which is the first component, with the second component 2, which reacts with the chlorite to generate chlorine dioxide gas. An outer container 10 that is deformable by adding a liquid and is configured to allow liquid to be drained, and an easily destructible inner container 20 that is housed inside the outer container 10 and seals the chlorite aqueous solution 1. , A bag-shaped body 40 containing a solid composition 30 containing the second component 2 and an outer container 10 and provided with a breathable vent 41.

Description

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

Conventionally, there are known devices and devices that generate chlorine dioxide gas by reacting a solution of chlorite with an acidic substance (for example, Patent Document 1).

JP-A-2007-145654

However, conventional chlorine dioxide generators have not been developed with the intention of carrying them around, and are often of the type that are placed on a desk or floor, or are large-scale. Further, even if the device is simply miniaturized so that it can be carried (portable), there is a problem that the liquid may drip from the inside of the device. Liquid dripping can be achieved by ensuring the airtightness of the container, but on the other hand, if the airtightness of the container is ensured, a new problem has arisen, such as a delay in the release of chlorine dioxide gas.

Further, 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 high-concentration chlorine dioxide gas to some extent quickly. In order to increase the concentration of chlorine dioxide gas generated, for example, it is conceivable to increase the concentration of the acidic substance used. However, high-concentration acidic substances, such as high-concentration sulfuric acid, are dangerous because they are deleterious substances and require careful handling. If the concentration of the acidic substance is lowered in order to avoid the danger, the efficiency of chlorine dioxide gas generation is lowered, and there is a problem that a satisfactory fumigation treatment cannot be performed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the size of the device, enable the source of chlorine dioxide gas to be safely carried (portable), and quickly carry a large amount of chlorine dioxide gas. It is in the place of providing a chlorine dioxide generator that can generate chlorine dioxide.

The first characteristic configuration of the chlorine dioxide generator according to the present invention for achieving the above object is that the chlorite, which is the first component, reacts with the chlorite to generate chlorine dioxide gas. In a chlorine dioxide generator that generates chlorine dioxide gas by reacting components with each other, it is deformable by applying an external force and is housed in an outer container that is configured to allow liquid to be drained and inside the outer container. A fragile inner container sealed with an aqueous solution of chlorite, a bag-like body containing the solid composition containing the second component and the outer container, and provided with a breathable vent. It is in the point that it is equipped with.

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

Further, according to this configuration, since the solid composition containing the second component and the outer container are housed in the bag-like body, the solid composition containing the second component and the chlorite aqueous solution are not contacted. Can be stored in a state. In this state, the easily destructible inner container housed inside can be easily destroyed by deforming the outer container by applying an external force. At this time, the chlorite aqueous solution flows out from the inner container to the inside of the outer container. Since the outer container is configured to allow the liquid to be drained, the chlorite aqueous solution is discharged from the outer container and comes into contact with the solid composition containing the second component, whereby chlorine dioxide gas is generated. Chlorine dioxide gas generated in the bag-shaped body is released to the outside of the bag-shaped body from a breathable vent.

With the release of chlorine dioxide gas from the ventilation section, the concentration of chlorine dioxide gas in the fumigation chamber increases, and the object to be treated is treated with chlorine dioxide (sterilization of bacteria and fungi, virus inactivation treatment, etc.) in the fumigation chamber. Pest control treatment, etc.) can be carried out for a predetermined time. 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 treatment time (reservation time of a person) in the space in the fumigation room can be shortened, and a person can immediately enter the fumigation room after ventilation.

The reason why a large amount of chlorine dioxide gas is transiently generated in the chlorine dioxide generator of this configuration 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 at a concentration higher than the apparent concentration of the second component in the solid composition. Therefore, it is thought that the contact area (reaction opportunity) of chlorite and the second component will increase and the reaction rate will increase, which will dramatically increase the reaction and generate chlorine dioxide gas transiently (rapidly). Be done.

Further, according to this configuration, the bag-shaped body can make the release of chlorine dioxide gas a breathable portion.

The second characteristic configuration of the chlorine dioxide generator according to the present invention is to react the chlorite, which is the first component, with the second component, which reacts with the chlorite to generate chlorine dioxide gas. In a chlorine dioxide generator that generates chlorine dioxide gas, an outer container that is deformable by applying an external force and is configured to allow liquid to be drained, and an outer container that is housed inside the outer container and contains the second component. A point provided with an easily destructible inner container in which an aqueous solution is sealed, and a bag-like body containing the chlorite-containing solid composition and the outer container and provided with a breathable vent. be.

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

Further, according to this configuration, since the solid composition containing chlorite and the outer container are contained in the bag-like body, the solid composition containing chlorite and the aqueous solution of the second component can be mixed. Can be stored in a non-contact state. In this state, the easily destructible inner container housed inside can be easily destroyed by deforming the outer container by applying an external force. At this time, the aqueous solution of the second component flows out from the inner container into the inside of the outer container. Since the outer container is configured to allow the liquid to be drained, the aqueous solution of the second component is discharged from the outer container and comes into contact with the solid composition containing chlorite, whereby chlorine dioxide gas is generated. Chlorine dioxide gas generated in the bag-shaped body is released to the outside of the bag-shaped body from a breathable vent.

Further, according to this configuration, the bag-shaped body can make the release of chlorine dioxide gas a breathable portion.

The third characteristic configuration of the chlorine dioxide generator according to the present invention is that the bag-shaped body is formed in a rectangular shape when viewed from above, 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-shaped body. As a result, chlorine dioxide generated inside the bag-shaped body can be released from at least one side of the entire bag-shaped body, so that a large amount of chlorine dioxide gas generated can be quickly released to the outside of the bag-shaped body. be able to.

The fourth characteristic configuration of the chlorine dioxide generator according to the present invention is that the ventilation portion is formed by processing a synthetic resin material into a non-woven fabric.

According to this configuration, the ventilation portion can be made gas permeable and liquid permeable.

The fifth characteristic configuration 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-shaped body.

The sixth characteristic configuration of the chlorine dioxide generator according to the present invention is 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-like 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 by moving the bag-like body left and right, for example, chlorite The reaction between the aqueous salt solution and the second component is efficiently carried out, and chlorine dioxide gas can be generated according to the theoretical value of the reaction.

The seventh characteristic configuration of the chlorine dioxide generator according to the present invention is that the outer container and the inner container are formed in a tubular shape, the outer container lids are provided at both ends of the outer container, and both ends of the inner container are provided. Is in contact with and supported by the 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 so as to be sandwiched between the pair of outer container lids, it is possible to prevent the inner container from moving inside the outer container. As a result, it is possible to prevent the inner container from being damaged by the impact of the inner container moving inside the outer container and hitting the inner surface of the outer container when the chlorine dioxide generator is carried.

The eighth characteristic configuration of the chlorine dioxide generator according to the present invention is that the second component is an acidic substance.

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

The 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 is excellent in 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. Moreover, since sodium chlorite or potassium chlorite as a chlorite is easily available, the present invention can be easily carried out.

The tenth characteristic configuration 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 variation of the prepared acidic substance becomes large, which is not preferable. In addition, if the concentration of chlorite is less than 0.1% by weight, there may be a problem that chlorite is insufficient in the generation of chlorine dioxide gas, and if it exceeds 30% by weight, subchlorite may occur. There may be a problem that the chlorite is saturated and crystals are likely to precipitate. Therefore, in consideration of safety, stability, chlorine dioxide gas generation efficiency, etc., it is preferably 0.1 to 30% by weight.

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

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

As shown in FIG. 1, the chlorine dioxide generator X of the present invention can be deformed by applying an external force, and is housed in an outer container 10 having a structure capable of draining a liquid and inside the outer container 10. A bag provided with an easily destructible inner container 20 in which the chlorite aqueous solution 1 is sealed, a solid composition 30 containing the second component 2 and an outer container 10, and a breathable vent 41. The body 40 and the like are provided.

The second component may be a substance that reacts with chlorite to generate chlorine dioxide gas, for example, an acidic substance or chlorine dioxide that reacts with chlorite alone without containing an acidic substance. Can be a substance that generates. In this embodiment, the case where the second component 2 is an acidic substance will be described. The acidic substance should be an acidic substance that exhibits acidity by being dissolved in water.

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

Examples of the shape of the outer container 10 include, but are not limited to, tubular (test tubular), stick-shaped, bag-shaped, and box-shaped. For example, when the outer container 10 is configured 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 destroyed. In the present embodiment, the case where the outer container 10 has a tubular shape will be described.

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

Further, as a mode of holding the inner container 20 inside the outer container 10, each of both ends of the inner container 20 is supported by abutting against the inner surfaces of the outer container lids 11 provided on both ends of the outer container 10. It is good to do. With this configuration, both ends of the inner container 20 can be held so as to be sandwiched between the pair of outer container lids 11, so that the inner container 20 can be prevented from moving inside the outer container 10. As a result, 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.

(Inner container)
The inner container 20 is a container in which the chlorite aqueous solution 1 can be sealed and is easily destructible. The term "easy-to-break" as used herein means a property that can be easily cracked or cracked by being deformed by applying a force from the outside, or by bending (or trying to bend), but during transportation or It must not be damaged by shaking or light impact during storage. Examples of easily destructible inclusion bodies include glass ampoules and relatively thin plastic containers. When a plastic container is used as the easily destructible 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) the fragile portion. It can also be configured to crack or crack (break).

Examples of the shape of the inner container 20 include, but are not limited to, tubular (test tubular), stick-shaped, bag-shaped, and box-shaped. In the present embodiment, the case where the inner container 20 has a tubular shape will be described.

(Bag)
The bag-shaped body 40 is provided with a breathable portion 41 having breathability. In the present embodiment, an embodiment in which the bag-shaped body 40 is formed in a rectangular shape in a top view and the ventilation portion 41 is formed in a planar shape will be described, but the present invention is not limited thereto. In this configuration, the ventilation portion 41 can be formed on at least one side of the back surface of the bag-shaped body 40. As a result, chlorine dioxide generated inside the bag-shaped body 40 can be released from the entire surface of at least one side of the bag-shaped body 40, so that a large amount of chlorine dioxide gas generated can be quickly released to the outside of the bag-shaped body 40. Can be released into.

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

In order to make the front surface or the back surface of the bag-shaped body 40 gas permeable and liquid impermeable, the ventilation portion 41 provided on the front surface or the back surface may be formed by processing a synthetic resin material into a non-woven fabric. As the non-woven fabric, for example, a sheet of high-density polyethylene non-woven fabric can be used, but the non-woven fabric is not limited thereto. As the non-woven 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, acrylic nitrile styrene (AS) resin, acrylic nitrile butadiene styrene (ABS) resin, ethylene vinyl alcohol (EVOH) resin, vinyl chloride resin, polyethylene resin , A sheet made of a synthetic resin material such as a polyproprene resin or a polyolefin resin can be used, but the present invention is not limited thereto.

(Chlorite)
Examples of the chlorite used in the present invention include alkali metal chlorite and alkaline earth metal chlorate. Examples of the alkali metal chlorite salt include sodium chlorate, potassium chlorite, and lithium chlorate, and examples of the alkaline earth metal chlorate salt include calcium chlorate, magnesium chlorite, and subchlorite. Barium chlorate can be mentioned. Of these, sodium chlorite and potassium chlorite are preferable, and sodium chlorite is most preferable from the viewpoint of easy availability. One of these chlorinated oxygen alkalis may be used alone, or two or more thereof may be used in combination.

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

(Acid substance)
Acidic substances that can be used in the present invention include inorganic acids, organic acids or salts thereof, for example, inorganic acids such as hydrochloric acid, sulfuric acid, nitrate, phosphoric acid, boric acid, metaphosphate, pyrophosphate, sulfamic acid, formic acid, etc. Acetic acid, propionic acid, butyric acid, lactic acid, pyruvate, 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, or salts thereof. Examples of the salt of the inorganic acid include a salt of dihydrogen phosphate (sodium salt and potassium salt, the same applies hereinafter), a mixture of dihydrogen phosphate and monohydrogen phosphate, and the like.
Of these, sulfuric acid is preferably used because it has excellent storage stability, does not generate corrosive gas, and does not change in concentration even after being (impregnated) supported on a porous substance. The concentration of sulfuric acid is preferably 30% by weight or less, preferably 10% by weight or less, from the viewpoint of safety, when the final concentration in the solid composition 30 is contained in the solid composition 30. As the acidic substance, one kind may be used alone, or two or more kinds may be used in combination.

(Solid composition)
The solid composition 30 may have any aspect as long as it contains a second component (acidic substance), and may be, for example, a crystal of an acidic substance, a porous substance containing an acidic substance, or the like. In the present embodiment, the case where the solid composition 30 contains 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 that exhibits acidity when dissolved in water.

The solid composition 30 is preferably granular. By making the solid composition 30 granular, the solid composition 30 can easily move freely inside the bag-shaped body 40. Therefore, when the chlorite aqueous solution is in contact with the solid composition 30 containing the second component (acidic substance), the solid composition 30 can move freely by moving the bag-shaped body 40 left and right. If this is the case, the reaction between the chlorite aqueous solution and the acidic substance can be efficiently carried out, and chlorine dioxide gas can be generated according to the theoretical value of the reaction.

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

The particle size of such a porous substance is preferably, for example, about 0.05 to 10 mm. Further, it is preferable to select the porous substance having a water adsorption amount of 5% or more at room temperature. Further, it is preferable to select the porous substance having an angle of repose of 50 ° or less, preferably 45 ° or less, more preferably 40 ° or less, still more preferably 30 ° or less. For example, the angle of repose of Carrierct Q-10 (manufactured by Fuji Silysia Chemical Ltd.), which is a type of porous silica, is 1.7-4.0 mm: 19 °, 75-500 μm: 23 °, and Carrierct G. The angle of repose of -10 (manufactured by Fuji Silysia Chemical Ltd.) is 0.35-1.17 mm: 35 °.

In the chlorine dioxide generator X having such a configuration, the easily destructible inner container 20 housed inside can be easily destroyed by deforming the outer container 10 by applying an external force. At this time, the chlorite aqueous solution flows out from the inner container 20 into the outer container 10. Since the outer container 10 is configured to allow the liquid to be drained through the opening 11a, the chlorite aqueous solution is discharged from the outer container 10 and comes into contact with the solid composition 30 containing the acidic substance (second component). However, this produces chlorine dioxide gas. The chlorine dioxide gas generated in the bag-shaped body 40 is discharged to the outside of the bag-shaped body 40 from the breathable vent 41.

The place (smoke place) where the chlorine dioxide generator X of the present invention is used is not particularly limited, for example, for general households (living room, entrance, washroom, kitchen, etc.), for industrial use (for factories), or in hospitals. It can be used in all situations, such as medical sites such as clinics and nursing care facilities, and public facilities such as schools, station buildings, and public toilets. Moreover, it can be used not only in a relatively large space such as an indoor space where a person can live, but also in a narrow space such as a refrigerator, a shoe box, or 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 it is desirable that the generator is a closed space.

Since chlorine dioxide gas is extremely soluble, a porous substance 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 the amount of 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 chlorine dioxide gas dissolved can be reduced. Therefore, it is possible to substantially generate a high concentration of chlorine dioxide gas in a short period of time (transient).
As described above, by using the chlorine dioxide generator X of the present invention, a large amount of chlorine dioxide gas can be rapidly generated. Therefore, the fumigation treatment time (reservation time of a person) in 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 the present embodiment, the case where the aqueous solution of the second component 2 which is 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 is housed inside the outer container 10 and the outer container 10 which are configured to be able to drain the liquid. A bag-shaped container containing an easily destructible inner container 20 in which an aqueous solution of a component (acidic substance) is sealed, a solid composition 30 containing chlorite and an outer container 10, and a breathable vent 41. It comprises a body 40.

In the chlorine dioxide generator X having such a configuration, the easily destructible inner container 20 housed inside can be easily destroyed by deforming the outer container 10 by applying an external force. At this time, an aqueous solution of an acidic substance flows out from the inner container 20 into the outer container 10. Since the outer container 10 is configured to allow the liquid to be drained 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 the chlorite, whereby the liquid is discharged. Chlorite dioxide gas is generated. The chlorine dioxide gas generated in the bag-shaped body 40 is discharged to the outside of the bag-shaped body 40 from the breathable vent 41.

As the acidic substance that can be used in this embodiment, the above-mentioned acidic substance can be used. When sulfuric acid is used as an acidic substance, the concentration of the aqueous solution is preferably 30% by weight or less.
Further, in the present embodiment, the final concentration of the chlorite contained in the solid composition 30 is preferably 30% by weight or less, preferably 20 to 25% by weight for safety and stability. It is preferable from the viewpoint of property and efficiency of chlorine dioxide gas generation.

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

After deforming the resin cylinder (outer container 10) from the outside of the non-woven bag (bag-shaped body 40) to destroy the glass ampoule (inner container 20) housed inside the resin cylinder, swiftly shake it up and down several times. Chlorine dioxide gas was generated by contacting the aqueous sodium chlorite solution with the silica gel (solid composition 30) impregnated with sulfuric acid. As shown in FIG. 2, the chlorine dioxide generator X that generates chlorine dioxide gas is immediately placed in a vinyl chloride container 51, and chlorine dioxide is placed in a potassium iodide aqueous solution (200 mL) contained in another container 52. Chlorine dioxide gas was collected by dissolving the gas. The collection was completed at a specified time after the start of the reaction, and the amount of chlorine dioxide gas collected 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 iodine titration was performed using a 0.1 mol / L sodium thiosulfate solution under acidic conditions. The amount of chlorine dioxide gas (mg) collected in the potassium iodide aqueous solution was calculated according to the following calculation formula.
Chlorine dioxide (mg) = titration x F x 1.349 / 5 x 200 (F: factor of 0.1 mol / L sodium thiosulfate solution) (1.349: 0.1 mol / L sodium thiosulfate solution 1 mL is dioxide 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 peaked 30 minutes after the generation, and then the amount of chlorine dioxide gas generated 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 variously changed to 115 to 350 mg. Chlorine dioxide was generated using the modified one, and the amount of chlorine dioxide gas collected was determined. The results are shown in Table 2 and FIG.

As a result, it was found that the amount of chlorine dioxide gas collected in the chlorine dioxide generator X increases linearly as the amount of sodium chlorite contained in the sodium chlorite aqueous solution increases. Moreover, since the reaction efficiency was almost 100%, it was recognized that chlorine dioxide gas was efficiently generated 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 sodium chlorite solution.

The present invention provides a chlorine dioxide generator that generates chlorine dioxide gas by reacting chlorite, which is the first component, with 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 container 11 Outer container lid 20 Inner container 30 Solid composition 40 Bag-like body 41 Ventilation part

Claims (10)

In a chlorine dioxide generator that generates chlorine dioxide gas by reacting the first component, chlorite, with the second component, which reacts with the chlorite to generate chlorine dioxide gas.
An outer container that can be deformed by applying an external force and is configured to drain liquid,
An easily destructible inner container housed inside the outer container and sealed with an aqueous chlorite solution.
A chlorine dioxide generator comprising a solid composition containing the second component and a bag-like body containing the outer container and provided with a breathable vent. In a chlorine dioxide generator that generates chlorine dioxide gas by reacting the first component, chlorite, with the second component, which reacts with the chlorite to generate chlorine dioxide gas.
An outer container that can be deformed by applying an external force and is configured to drain liquid,
An easily destructible inner container housed inside the outer container and sealed with an aqueous solution of the second component.
A chlorine dioxide generator comprising the solid composition containing the chlorite and a bag-like body containing the outer container and provided with a breathable vent. The chlorine dioxide generator according to claim 1 or 2, wherein the bag-shaped body is formed in a rectangular shape when viewed from above, and the ventilation portion is formed in a planar shape. The chlorine dioxide generator according to any one of claims 1 to 3, wherein the vent is formed by processing a synthetic resin material into a non-woven 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. The chlorine dioxide generator according to any one of claims 1 to 5, wherein the solid composition is granular. The outer container lid is formed in a tubular shape, the outer container is provided with outer container lids at both ends of the outer container, and both ends of the inner container are provided at both ends of the outer container. The chlorine dioxide generator according to any one of claims 1 to 6, which is supported by abutting against 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. The chlorine dioxide generator according to claim 8 or 9, 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.

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