TW202019812A - Chlorine dioxide generator - Google Patents

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 generating device that reacts chlorite of a first component with a second component that can react with the chlorite to generate chlorine dioxide gas to generate chlorine dioxide gas.

Conventionally, an apparatus or device that generates a chlorine dioxide gas by reacting a chlorite solution with an acidic substance is known (for example, Patent Document 1). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2007-145654

[Problems to be solved by the invention]

However, the conventional chlorine dioxide generating devices are not developed for the purpose of transportation, and are mostly of the type placed on a desk or floor or large in size. In addition, even if it is simply miniaturized to make it transportable (portable), there is still a problem that the liquid may drip from the inside of the device. Although the liquid dripping phenomenon can be solved by ensuring the tightness of the container, if the tightness of the container is ensured, new problems such as hindering the emission of chlorine dioxide gas may occur.

In addition, when fumigating chlorine dioxide gas in, for example, a room, an interior, or other similar spaces, it is necessary to produce a large amount of chlorine dioxide gas with high concentration to a certain extent and quickly. To increase the concentration of the generated chlorine dioxide gas, the research needs to, for example, increase the concentration of the acidic substance used. However, high-concentration acidic substances, such as high-concentration sulfuric acid, are toxic substances, etc., and attention should be paid when handling, which may be accompanied by danger. If the concentration of the acidic substance is lowered to avoid the danger, the generation efficiency of chlorine dioxide gas is reduced, and sufficient fumigation treatment cannot be performed.

The present invention has been completed in view of the above-mentioned facts, and its object is to provide a small-sized device, so that the generation source of chlorine dioxide gas can be safely transported (carried), and can quickly produce a large amount of chlorine dioxide gas dioxide Chlorine generating device. [Means to solve the problem]

The first characteristic configuration of the chlorine dioxide generating device of the present invention for achieving the above-mentioned object is that it is the second component that reacts the chlorite of the first component with the chlorite to produce chlorine dioxide gas The components react to produce chlorine dioxide gas, which includes: an outer container, which can be deformed by applying an external force, and is configured to discharge liquid; and a fragile inner container, which is housed inside the outer container and is used for sealing chlorous acid A saline solution; a solid composition containing the second component; and a bag-shaped body that houses the outer container and is provided with a gas-permeable vent.

According to this configuration, since the chlorine dioxide generating device can be configured by sealing the outer container or solid composition storing the inner container in the bag-shaped body, the device can be miniaturized.

In addition, according to this configuration, the solid composition containing the second component and the outer container are housed in the bag-shaped body, so the solid composition containing the second component and the aqueous solution of chlorite can be stored in a non-contact state. In this state, by applying an external force to the outer container to deform it, the fragile inner container housed inside can be easily destroyed. At this time, the aqueous chlorite solution will flow out from the inner container to the inside of the outer container. Since the outer container is configured to discharge liquid, the chlorite aqueous 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 system generated in the bag-shaped body is discharged to the outside of the bag-shaped body from the breathable air-permeable portion.

With the release of chlorine dioxide gas from the ventilation section, the concentration of chlorine dioxide gas in the fumigation chamber increases, and the chlorine dioxide treatment of the object to be treated (fungi and fungus sterilization) can be performed in the fumigation chamber for a predetermined time Treatment, virus deactivation treatment, pest extermination treatment, etc.). At this time, chlorine dioxide gas can be generated in large quantities 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 will temporarily decrease. Therefore, the fumigation treatment time (person's avoidance time) of the fumigation indoor space can be shortened, and people can enter the fumigation room immediately after ventilating.

In the chlorine dioxide generator of this configuration, the reason why a large amount of chlorine dioxide gas is temporarily generated is that, because the second component is contained in the solid composition, free water in the reaction system can be reduced. That is, the second component can be reacted in a state higher than the apparent concentration of the second component in the solid composition. Therefore, the contact area (reaction probability) of chlorite and the second component is increased to increase the reaction rate, whereby the reaction is more violent, and it is judged that chlorine dioxide gas is temporarily (rapidly) generated.

In addition, according to this configuration, the bag-shaped body can release the chlorine dioxide gas in the breathable air-permeable portion.

The second characteristic structure of the chlorine dioxide generating device of the present invention is that it reacts the chlorite of the first component with the second component which can react with the chlorite to generate chlorine dioxide gas to produce two Chlorine oxide gas, comprising: an outer container, which can be deformed by applying an external force, and is configured to discharge liquid; a fragile inner container, which is housed inside the outer container to seal the aqueous solution of the second component; solid The composition contains the chlorite; and the bag-shaped body stores the outer container, and is provided with a breathable portion having breathability.

According to this configuration, since the chlorine dioxide generating device can be configured by sealing the outer container or solid composition storing the inner container in the bag-shaped body, the device can be miniaturized.

Furthermore, according to this configuration, since the solid composition containing chlorite and the outer container are housed in the bag-like body, the solid composition containing chlorite and the second component can be stored in a non-contact state Water solution. In this state, by applying an external force to the outer container to deform it, the fragile inner container housed inside can be easily destroyed. At this time, the aqueous solution of the second component will flow out from the inner container to the inside of the outer container. Since the outer container is configured to discharge 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 system generated in the bag-shaped body is discharged to the outside of the bag-shaped body from the breathable air-permeable portion.

In addition, according to this configuration, the bag-shaped body can release the chlorine dioxide gas in the breathable air-permeable portion.

A third characteristic structure of the chlorine dioxide generating device of the present invention is that the bag-shaped body is formed in a rectangular shape in plan view, and the air-permeable portion is formed in a planar shape.

According to this configuration, the air-permeable portion can be formed on at least one side of the front and back surfaces of the bag-shaped body. Thereby, since the chlorine dioxide generated inside the bag-shaped body can be discharged from the entire surface of at least one side of the bag-shaped body, a large amount of chlorine dioxide gas generated can be quickly released to the outside of the bag-shaped body .

The fourth characteristic structure of the chlorine dioxide generating device of the present invention is that the aforementioned air-permeable portion is formed by processing a synthetic resin material into a non-woven fabric.

According to this configuration, the air-permeable portion can be made air-permeable and liquid-impermeable.

A fifth characteristic configuration of the chlorine dioxide generating device of the present invention is that the solid composition contains a porous substance as a carrier.

According to this configuration, since the porous substance is 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 generating device of the present invention is to make the aforementioned solid composition granular.

According to this configuration, by making the solid composition into a granular shape, the solid composition can easily move freely inside the bag-shaped body. Therefore, for example, when the aqueous solution of chlorite is in contact with the solid composition containing the second component, as long as the bag-like body is shaken left and right to move the solid composition freely, the aqueous solution of the chlorite and the second component can be effectively carried out The reaction can produce chlorine dioxide gas in accordance with the theoretical value of the reaction.

A seventh characteristic configuration of the chlorine dioxide generating device of the present invention is that the outer container and the inner container are formed in a tubular shape, and both end portions of the outer container are provided with outer container lid portions, and both end portions of the inner container are provided Each is in contact with each inner surface of the outer container lid provided at both ends of the outer container and supported.

According to this configuration, since both ends of the inner container can be sandwiched and held by the pair of outer container lid portions, the inner container can be prevented from moving inside the outer container. Thereby, it is possible to prevent the inner container from being damaged due to the impact of the inner container moving inside the outer container and the impact of the inner surface of the outer container during transportation of the chlorine dioxide generating device.

An eighth characteristic configuration of the chlorine dioxide generating device of the present invention is to define the second component as an acidic substance.

According to this configuration, by making the second component that can react with chlorite to generate chlorine dioxide gas an acidic substance, the chlorite can react with the acidic substance to easily generate chlorine dioxide gas.

A ninth characteristic configuration of the chlorine dioxide generating device of 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, which is an acidic substance, is excellent in storage stability, does not generate corrosive gas, and does not change in concentration after being supported on a porous substance, so it has excellent handling properties. In addition, sodium chlorite or potassium chlorite, which are chlorites, can be easily obtained, and the present invention can be easily implemented.

A tenth characteristic configuration of the chlorine dioxide generating device of 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 is not easy to disperse, and the unevenness of the prepared acidic substance becomes large and unfavorable. In addition, when the concentration of chlorite is less than 0.1% by weight, the problem of insufficient chlorite may occur during the generation of chlorine dioxide gas; when it exceeds 30% by weight, chlorite may easily occur Saturation and precipitation of crystals. Therefore, in view of safety or stability, generation efficiency of chlorine dioxide gas, etc., it is preferably 0.1 to 30% by weight.

[Forms for carrying out the invention]

The embodiments of the present invention will be described below based on the drawings. The chlorine dioxide generating device of the present invention reacts the chlorite of the first component with the second component which can react with the chlorite to generate chlorine dioxide gas to generate chlorine dioxide gas.

As shown in FIG. 1, the chlorine dioxide generating device X of the present invention includes: an outer container 10 that can be deformed by applying an external force and is configured to discharge liquid; and a fragile inner container 20 that is housed in the outer container 10 Inside, for sealing the chlorite aqueous solution 1; the solid composition 30, which contains the second component 2; and the bag-shaped body 40, which houses the outer container 10, and is provided with a breathable air-permeable portion 41.

The second component may be any substance that can react with chlorite to generate chlorine dioxide gas. For example, an acidic substance or a substance that does not contain an acidic substance but reacts with chlorite as a simple substance to generate chlorine dioxide can be used. substance. In this embodiment, the case where the second component 2 is an acidic substance will be described. The acidic substance is preferably an acidic substance that shows acidity by dissolving in water.

(Outside container) The outer container 10 only needs to be capable of being deformed by applying an external force, and has a space in which the inner container 20 can be stored. As the material that presents such a form, an example is exemplified by flexible material. The term "flexibility" as used herein refers to a property that can be easily bent into a circular arc shape and deformed when an external force is applied, and the applied force is easily restored to its original shape. Examples of flexible resin materials include polyethylene, polypropylene, and silicon.

The shape of the outer container 10 can be exemplified as a tube (test tube), rod, bag, box, etc., but it is not limited thereto. For example, when the outer container 10 is configured in a bag shape, the inner container 20 is stored in the bag-shaped outer container 10 in advance. When an external force is applied, it is preferable to press the bag-shaped outer container 10 to deform to the extent that the inner container 20 is destroyed. In this embodiment, the case where the shape of the outer container 10 is made into a tube will be described.

The outer container 10 is configured to discharge liquid. In the present embodiment, a case where a plurality of small openings 11a (for example, five openings with a diameter of 2 mm) are formed at both ends of the outer container 10 is provided with an outer container cover 11. That is, the liquid can be discharged through the opening 11a formed in the outer container lid 11.

In addition, as to hold the inner container 20 inside the outer container 10, it is preferable to abut both ends of the inner container 20 to each inner surface of the outer container lid 11 provided at both ends of the outer container 10, respectively. stand by. With this configuration, since both ends of the inner container 20 can be held by a pair of outer container lids 11, the inner container 20 can be prevented from moving inside the outer container 10. This prevents the inner container 20 from being damaged when the inner container 20 moves inside the outer container 10 and the impact of the inner surface of the outer container 10 during the transportation of the chlorine dioxide generating device X or the like occurs.

(Inside container) The inner container 20 can seal the aqueous chlorite solution 1 and is a fragile container. The term "destructive" as used herein refers to the property of being deformed by applying force from the outside, or bending (or trying to bend) to easily cause cracks or rupture and be destroyed, but it cannot be Those damaged by shaking or slight impact during storage. Examples of fragile enclosed bodies include glass ampoules or thin plastic containers. When a plastic container is used as the fragile inner container 20, it can also be configured that a fragile portion is artificially provided in the container in advance, and it is bent (or tried to bend) by applying force from the outside, and a crack or occurrence occurs in the fragile portion Cracked (broken).

The shape of the inner container 20 can be exemplified as a tube (test tube), rod, bag, box, etc., but it is not limited thereto. In this embodiment, the case where the shape of the inner container 20 is made into a tube will be described.

(Bag-like body) The bag-shaped body 40 is provided with a breathable portion 41 having breathability. In this embodiment, the bag-shaped body 40 is configured to have a rectangular shape in plan view, and the air-permeable portion 41 is configured to have a planar shape, but it is not limited thereto. In this configuration, the air-permeable portion 41 may be formed on at least one side of the front and back surfaces of the bag-shaped body 40. Thereby, since the chlorine dioxide generated inside the bag-shaped body 40 can be discharged from the entire surface of at least one side of the bag-shaped body 40, a large amount of generated chlorine dioxide gas can be quickly released to the bag-shaped body 40 outside.

The bag-like body 40 makes at least one of the front and back surfaces breathable and liquid-impermeable. That is, the bag-like body 40 can make the surface air-permeable and liquid-impermeable, and make the back surface non-air-permeable, or make the surface non-air-permeable and liquid-permeable, and make the back surface air-permeable and liquid-impermeable. Or make both the front and back sides breathable and liquid-impermeable. At this time, the bag-like body 40 may be such that at least one of the front and back surfaces is translucent. The peripheral portion 40a of the bag-shaped body 40 is preferably formed by heat sealing, ultrasonic sealing, adhesive, or the like.

To make the surface or back surface of the bag-like body 40 air-permeable and liquid-impermeable, it is preferable that the air-permeable portion 41 provided on the surface or back surface is formed by processing a synthetic resin material into a non-woven fabric. For the nonwoven fabric, for example, a high-density polyethylene nonwoven fabric sheet can be used, but it is not limited thereto. The nonwoven fabric may be, for example, EXEPOL (registered trademark, manufactured by Mitsubishi Chemical Co., Ltd.), Tyvek (registered trademark, manufactured by Du Pont Co., Ltd.), GORE-TEX (registered trademark, manufactured by WL Gore & Associates), etc., but is not limited thereto.

To make the surface or back surface of the bag-like body 40 non-breathable and liquid-permeable, acrylonitrile styrene (AS) resin, acrylonitrile butadiene styrene (ABS) resin, ethylene vinyl alcohol (EVOH) resin, chlorine Sheets composed of synthetic resin materials such as vinyl resin, polyethylene resin, polypropylene resin, polyolefin resin, etc., but not limited thereto.

(Chlorite) Examples of the chlorite used in the present invention include alkali metal chlorite or alkaline earth metal chlorite. Examples of the alkali metal chlorite include sodium chlorite, potassium chlorite, and lithium chlorite; and alkaline earth metal chlorite salts include calcium chlorite, magnesium chlorite, and barium chlorite. Among them, from the viewpoint of easy availability, sodium chlorite and potassium chlorite are preferred, and sodium chlorite is most preferred. These chlorite bases may be used alone or in combination of two or more.

The proportion of chlorite in the aqueous chlorite solution is preferably 0.1% by weight to 30% by weight. If it is less than 0.1% by weight, the problem of insufficient chlorite may occur during the generation of chlorine dioxide gas; when it exceeds 30% by weight, there may be a problem that the chlorite is easily saturated and crystals are precipitated. In view of safety or stability, generation efficiency of chlorine dioxide gas, etc., it is preferably 15% by weight to 25% by weight, and a more preferable range is 20% by weight to 25% by weight.

(Acid) The acidic substance usable in the present invention is an inorganic acid or organic acid or a salt thereof, and examples thereof include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, boric acid, metaphosphoric acid, pyrophosphoric acid, and sulfanilic acid, formic acid, acetic acid, and 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, glutaric acid Such as organic acids, or such salts. In addition, the salts of inorganic acids include, for example, dihydrogen phosphate (sodium or potassium salt, the same below), a mixture of dihydrogen phosphate and monohydrogen phosphate, and the like. Among them, sulfuric acid is preferably used for reasons such as excellent storage stability, no generation of corrosive gas, and no concentration change after being (impregnated) supported on a porous substance. Regarding the concentration of sulfuric acid, the final concentration in the state of being contained in the solid composition 30 is preferably 30% by weight or less, preferably 10% by weight or less, which is preferable from the viewpoint of safety. One type of acidic substance may be used alone, or two or more types may be used in combination.

(Solid composition) The solid composition 30 only needs to be in a form containing a second component (acidic substance), and for example, a crystal containing an acidic substance or a porous substance in an acidic substance may be used. In this 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 shows acidity by dissolving in water.

The solid composition 30 is preferably granulated. By making the solid composition 30 granular, the solid composition 30 can easily move freely inside the bag-shaped body 40. Therefore, when the aqueous solution of chlorite is in contact with the solid composition 30 containing the second component (acidic substance), as long as the bag-shaped body 40 and the like are shaken left and right to move the solid composition 30 freely, the chlorite can be effectively carried out The reaction between the aqueous solution and the acidic substance can generate chlorine dioxide gas that complies with the theoretical value of the reaction.

The porous substance may be, for example, a porous material or sintered aggregate, but it 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. Among them, porous silica is preferably used because it is easily available, has excellent porosity (large porous space), and easily contains acidic substances or chlorite. The specific surface area of such porous silica and the like is not particularly limited. For firing the aggregate, for example, a bone, shell, and coral of an animal (including mammals, fish, and birds) can be fired to form a crushed flake, particle, or powder.

The particle size of such a porous substance is preferably set to, for example, about 0.05 to 10 mm. In addition, the porous substance is preferably selected to have a moisture absorption amount of at least 5% at room temperature. Furthermore, the porous material is preferably selected to have an angle of repose of 50° or less, preferably 45° or less, more preferably 40° or less, and still more preferably 30° or less. For example, CARiACT Q-10 (manufactured by Fuji Silysia Chemical Co., Ltd.), which is a kind of porous silica, has an angle of repose particle size of 1.7-4.0 mm: 19°, 75-500 μm: 23°, CARiACT G-10 (Fuji Silysia Chemical The angle of repose of the company) is 0.35-1.7mm: 35°.

In the chlorine dioxide generating device X having such a configuration, by applying an external force to the outer container 10 to deform it, the fragile inner container 20 housed inside can be easily destroyed. At this time, the aqueous chlorite solution flows out from the inner container 20 to the inside of the outer container 10. Since the outer container 10 is configured to discharge 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), thereby generating chlorine dioxide gas. The chlorine dioxide gas system generated in the bag-shaped body 40 is discharged to the outside of the bag-shaped body 40 from the breathable air-permeable portion 41.

The place where the chlorine dioxide generating device X of the present invention is used (fumigation place) is not particularly limited, and it can be used in general households (living rooms, entrances, toilets, kitchens, etc.), for industrial use (for factories), or in hospitals, for example It can be used in medical facilities such as clinics and nursing facilities, public facilities such as schools or station buildings, and public toilets. In addition, it can be used not only in large spaces such as indoor spaces where people can live, but also in small spaces such as refrigerators or shoe cabinets, in cars (cars, buses, and trams). As such, the size of the applicable space of the generating device of the present invention is not particularly limited, and it is preferably a closed space.

Since chlorine dioxide gas is extremely soluble, in order to reduce free water in the reaction system as much as possible during the reaction, porous materials such as zeolite and silica gel are used as carriers. By reducing the free water in the reaction system, the reaction rate of sulfuric acid and other acidic substances and chlorite can be increased, and the amount of dissolved chlorine dioxide gas can be reduced. Therefore, the amount of chlorine dioxide gas can be substantially generated at a high concentration in a short time (temporarily). In this way, if the chlorine dioxide generating device X of the present invention is used, a large amount of chlorine dioxide gas can be generated quickly. Therefore, the fumigation treatment time (person's avoidance time) of the fumigation indoor space can be shortened, and people can enter the fumigation room immediately after ventilating.

[Other embodiments] In the above 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 will be described. In contrast, in this embodiment, the case where the aqueous solution of the second component 2 of the 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 generating device X of other embodiments includes: an outer container 10 that can be deformed by applying an external force and is configured to discharge liquid; and a fragile inner container 20 that is housed inside the outer container 10 For sealing the aqueous solution of the second component (acidic substance); the solid composition 30, which contains chlorite; and the bag-like body 40, which houses the outer container 10, and is provided with a breathable air-permeable portion 41.

In the chlorine dioxide generating device X having such a configuration, by applying an external force to the outer container 10 to deform it, the fragile inner container 20 housed inside can be easily destroyed. At this time, the aqueous solution of the acidic substance will flow out from the inner container 20 to the inside of the outer container 10. Since the outer container 10 is configured to discharge 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, thereby generating chlorine dioxide gas. The chlorine dioxide gas system generated in the bag-shaped body 40 is discharged to the outside of the bag-shaped body 40 from the breathable air-permeable portion 41.

The acidic substance usable in this form can use the above-mentioned acidic substance. When sulfuric acid is used as the acidic substance, the concentration of the aqueous solution is preferably 30% by weight or less. In addition, the chlorite contained in the state of the solid composition 30 in this form is preferably set to a final concentration of 30% by weight or less, preferably 20 to 25% by weight, for safety or stability, and dioxide From the viewpoint of generation efficiency of chlorine gas, it is preferable. [Example]

[Example 1] The chlorine dioxide generating device X of the present invention is used to generate chlorine dioxide, and the gas amount of the generated chlorine dioxide is determined. The chlorine dioxide generating device X series uses: a polypropylene resin tube (outside container 10: Φ20, total length 150 mm) that can be deformed by applying an external force; a cylindrical glass ampoule (inside container) for sealing an aqueous solution of sodium chlorite 20: Φ8, 120 mm in total length); CARiACT Q-10 (particle size 1.7-4.0 mm, manufactured by Fuji Silysia Chemical Co., Ltd.) impregnated with sulfuric acid as an acidic substance by a well-known method (solid composition 30) and storage resin cartridge The non-woven bag (bag-shaped body 40: 120mm × 200mm). To both ends of the resin tube (outer container 10), outer container lids 11 each having five openings 11a having a diameter of 2 mm are attached. The non-woven bag (bag-like body 40) is a sheet made of Tyvek (registered trademark, manufactured by Du Pont) on the front and vinyl chloride resin on the back, and both are heat-sealed so that the sealing width of the peripheral portion 40a becomes 10 mm. In addition, the amount of sodium chlorite contained in the sodium chlorite aqueous solution was 890 mg, the amount of sulfuric acid contained in the solid composition 30 was 260 mg, and the theoretical value of the generated chlorine dioxide gas was 330 mg.

After deforming the resin tube (outer container 10) from the outside of the non-woven bag (bag-shaped body 40) to destroy the glass ampule (inner container 20) housed in the resin tube, it was quickly shaken up and down several times to make the sodium chlorite aqueous solution and Chlorine dioxide gas is generated by contacting a silicon gel impregnated with sulfuric acid (solid composition 30). As shown in FIG. 2, the chlorine dioxide generating device X that is generating chlorine dioxide gas is immediately placed in a container 51 made of vinyl chloride, and the chlorine dioxide gas is dissolved in an aqueous potassium iodide solution (200 mL) stored in another container 52. And capture chlorine dioxide gas. The collection was ended at the time set after the start of the reaction, and the amount of captured chlorine dioxide gas was determined according to the following titration method. The results are shown in Table 1 and Figure 3.

Titration method Take 5mL of potassium iodide aqueous solution dissolved with chlorine dioxide gas, under acidic conditions, use 0.1mol/L sodium thiosulfate solution for iodine titration. The amount (mg) of chlorine dioxide gas trapped in the potassium iodide aqueous solution was calculated according to the following calculation formula. Chlorine dioxide (mg) = titration × F × 1.349 ÷ 5 × 200 (F: factor of 0.1mol/L sodium thiosulfate solution) (1.349: 1mL of 0.1mol/L sodium thiosulfate solution corresponds to chlorine dioxide 1.349mg)

As a result, the chlorine dioxide gas generated by the chlorine dioxide generating device X of the present invention reached its peak 30 minutes after the start of generation, and thereafter, it can be seen that the amount of generated chlorine dioxide gas gradually and continuously decreased. Since the amount of chlorine dioxide gas reached 86% of the theoretical value 30 minutes after the start of generation, it was confirmed that chlorine dioxide gas can be efficiently produced in a short time.

[Example 2] In the chlorine dioxide generating device X of Example 1, the amount of sodium chlorite contained in the aqueous solution of sodium chlorite was changed to 400 to 1200 mg, respectively, and the amount of sulfuric acid contained in the solid composition 30 was respectively Change to 115 to 350 mg to generate chlorine dioxide, and find the gas amount of the captured chlorine dioxide. The results are shown in Table 2 and Figure 4.

As a result, in the chlorine dioxide generating device X, it was found that as the amount of sodium chlorite contained in the sodium chlorite aqueous solution increases, the amount of chlorine dioxide gas trapped also increases as a linear function. In addition, since the reaction efficiency was almost 100%, it was confirmed that chlorine dioxide gas can be efficiently produced in accordance with the theoretical value. Therefore, in the chlorine dioxide generating device X of the present invention, it was confirmed that by adjusting the amount of sodium chlorite contained in the sodium chlorite aqueous solution, the amount of chlorine dioxide gas to be generated can be easily adjusted. [Industry availability]

The present invention can be used in a chlorine dioxide generating device that reacts chlorite of a first component with a second component that can react with the chlorite to generate chlorine dioxide gas to generate chlorine dioxide gas.

X: chlorine dioxide generator 1: Chlorite aqueous solution 2: second component 10: Outer container 11: Outer container lid 20: inside container 30: solid composition 40: bag 41: Ventilation section

FIG. 1 is a schematic diagram showing a chlorine dioxide generating device of the present invention. Fig. 2 is a schematic diagram showing an apparatus capable of trapping chlorine dioxide gas. FIG. 3 is a graph showing the relationship between the collection time and collection amount of chlorine dioxide gas. 4 is a graph showing the relationship between the amount of sodium chlorite and the amount of trapped chlorine dioxide gas.

X: chlorine dioxide generator

1: Chlorite aqueous solution

2: second component

10: Outer container

11: Outer container lid

11a: open

20: inside container

30: solid composition

40: bag

40a: Perimeter

41: Ventilation section

Claims (10)

A chlorine dioxide generating device which reacts chlorite of the first component with a second component which can react with the chlorite to generate chlorine dioxide gas to produce chlorine dioxide gas, which is provided with: The outer container can be deformed by applying external force, and is configured to discharge liquid; The fragile inner container is housed inside the aforementioned outer container for sealing the aqueous chlorite solution; The solid composition contains the aforementioned second component; and The bag-shaped body accommodates the aforementioned outer container, and is provided with a breathable air-permeable portion. A chlorine dioxide generating device which reacts chlorite of the first component with a second component which can react with the chlorite to generate chlorine dioxide gas to produce chlorine dioxide gas, which is provided with: The outer container can be deformed by applying external force, and is configured to discharge liquid; The fragile inner container is housed inside the outer container and is used to seal the aqueous solution of the second component; A solid composition containing the aforementioned chlorite; and The bag-shaped body accommodates the aforementioned outer container, and is provided with a breathable air-permeable portion. The chlorine dioxide generating device according to claim 1 or 2, wherein the bag-shaped body is configured to have a rectangular shape in plan view, and the air-permeable portion is configured to have a planar shape. The chlorine dioxide generating device according to claim 1 or 2, wherein the aforementioned air-permeable portion is formed by processing a synthetic resin material into a non-woven fabric. The chlorine dioxide generating device according to claim 1 or 2, wherein the aforementioned solid composition contains a porous substance as a carrier. The chlorine dioxide generating device according to claim 1 or 2, wherein the aforementioned solid composition is granular. The chlorine dioxide generating device according to claim 1 or 2, comprising the outer container and the inner container in a tubular shape, and having outer container lids at both ends of the outer container, and allowing both ends of the inner container Each of the parts abuts and supports each inner surface of the outer container lid provided at both ends of the outer container. The chlorine dioxide generating device according to claim 1 or 2, wherein the aforementioned second component is an acidic substance. The chlorine dioxide generating device according to claim 8, wherein the acidic substance is sulfuric acid, and the chlorite is sodium chlorite or potassium chlorite. The chlorine dioxide generating device according to claim 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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