HK40044942A - Chlorine dioxide generating device - Google Patents

Description

Chlorine dioxide generator

Technical Field

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

Background

Conventionally, an apparatus or device for generating chlorine dioxide gas by reacting a chlorite solution with an acidic substance has been known (for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2007-145654.

Disclosure of Invention

Problems to be solved by the invention

However, conventional chlorine dioxide generators have not been developed in consideration of portability, and are of a type that is placed on a table or a floor, or are often large-sized devices. Further, even if the device is merely miniaturized and portable (movable), there is a problem that liquid may drip from the inside of the device. Although liquid dripping can be prevented by ensuring the sealing property of the container, if the sealing property of the container is ensured, a new problem occurs in that the release of chlorine dioxide gas is delayed.

In addition, for example, when a room, or other similar space is fumigated with chlorine dioxide gas, it is necessary to rapidly generate chlorine dioxide gas in a large amount to some extent at a high concentration. 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, a high concentration of an acidic substance, for example, a high concentration of sulfuric acid, is a strong product and the like, and handling requires attention and is accompanied by a danger. If the concentration of the acidic substance is reduced in order to avoid the risk thereof, there is a problem that the generation efficiency of chlorine dioxide gas is reduced and an ideal fumigation treatment cannot be performed.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a chlorine dioxide generator which is compact, can safely carry (move) a generation source of chlorine dioxide gas, and can rapidly generate a large amount of chlorine dioxide gas.

Means for solving the problems

In order to achieve the above object, a first aspect of the present invention provides a chlorine dioxide generator for generating chlorine dioxide gas by reacting a chlorite salt as a first component with a second component that reacts with the chlorite salt to generate chlorine dioxide gas, the chlorine dioxide generator comprising: an outer container configured to be deformable by application of an external force and capable of discharging a liquid, an easily breakable inner container housed in the outer container and sealing a chlorite aqueous solution, and a bag-shaped body housing a solid composition containing the second component and the outer container and provided with a gas permeable portion.

According to this configuration, the chlorine dioxide generator can be configured by sealing the outer container accommodating the inner container and the solid composition in the bag-shaped body, and therefore the device can be downsized.

Further, according to this configuration, since the solid composition containing the second component and the outer container are contained in the bag-shaped body, the solid composition containing the second component and the chlorite aqueous solution can be contained in a non-contact state. In this state, the outer container is deformed by applying an external force, and the breakable inner container housed inside can be easily broken. 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 be able to discharge the 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. Chlorine dioxide gas generated in the bag-shaped body is released from the gas permeable portion having gas permeability to the outside of the bag-shaped body.

The concentration of chlorine dioxide gas in the fumigation chamber increases with the release of chlorine dioxide gas from the gas permeable part, and chlorine dioxide treatment (sterilization treatment of bacteria and fungi, virus inactivation treatment, pest control treatment, etc.) of the object to be treated in the fumigation chamber can be performed for a predetermined time. In this case, chlorine dioxide gas can be rapidly generated in a large amount. That is, after a large amount of chlorine dioxide gas is generated in a short time, the amount of chlorine dioxide gas generated after a while is reduced. Therefore, the time for fumigation treatment (human avoidance time) of the space in the fumigation chamber can be shortened, and after ventilation, a human can immediately enter the fumigation chamber.

In the chlorine dioxide generator having such a configuration, the reason why a large amount of chlorine dioxide gas is instantaneously generated is that the second component is contained in the solid composition, and therefore, free water in the reaction system can be reduced. That is, the second component can be reacted in a state of being more concentrated than the apparent concentration of the second component in the solid composition. Therefore, it is considered that the contact area (reaction opportunity) between the chlorite and the second component is increased and the reaction rate is increased, so that the reaction is accelerated and chlorine dioxide gas is instantaneously (rapidly) generated.

Further, according to this configuration, the bag-shaped body can release chlorine dioxide gas through the gas permeable portion having gas permeability.

A second characteristic configuration of the chlorine dioxide generator according to the present invention is a chlorine dioxide generator for generating chlorine dioxide gas by reacting a chlorite salt as a first component with a second component that reacts with the chlorite salt to generate chlorine dioxide gas, the chlorine dioxide generator including: an outer container configured to be deformable by application of an external force and capable of discharging a liquid, an inner container which is contained in the outer container and is breakable to seal an aqueous solution of the second component, and a bag-shaped body which contains a solid composition containing the chlorite and the outer container and is provided with a gas-permeable portion.

According to this configuration, the chlorine dioxide generator can be configured by sealing the outer container accommodating the inner container and the solid composition in the bag-shaped body, and therefore the device can be downsized.

Further, according to this configuration, since the solid composition containing chlorite and the outer container are accommodated in the bag-shaped body, the solid composition containing chlorite and the aqueous solution of the second component can be accommodated in a non-contact state. In this state, the outer container is deformed by applying an external force, and the breakable inner container housed inside can be easily broken. At this time, the aqueous solution of the second component flows out from the inner container to the inside of the outer container. Since the outer container is configured to be capable of discharging 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. Chlorine dioxide gas generated in the bag-shaped body is released from the gas permeable portion having gas permeability to the outside of the bag-shaped body.

Further, according to this configuration, the bag-shaped body can release chlorine dioxide gas through the gas permeable portion having gas permeability.

A 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 in a 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 of the front and back surfaces of the pouch-shaped body. Thus, chlorine dioxide gas generated inside the bag-shaped body can be released from the entire surface of at least one surface side of the bag-shaped body, and therefore, a large amount of generated chlorine dioxide gas can be rapidly released to the outside of the bag-shaped body.

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

With this configuration, the gas permeable portion can be made gas permeable and liquid impermeable.

A fifth characteristic configuration of the chlorine dioxide generator according to the present invention is that the solid composition contains a porous material as a carrier.

According to this configuration, the porous material serves as a carrier for carrying the first component or the second component, and therefore the first component or the second component can be stably held in the bag-shaped body.

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

According to this configuration, the solid composition is granulated, so that the solid composition can easily move freely inside the bag-shaped body. Therefore, for example, when the solid composition containing the second component is brought into contact with the chlorite aqueous solution, the solid composition can be freely moved by rocking the bag-shaped body left and right, and the reaction between the chlorite aqueous solution and the second component can be efficiently performed, and chlorine dioxide gas in accordance with the theoretical reaction value can be generated.

A seventh feature 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, outer container covers are provided at both ends of the outer container, and both ends of the inner container are supported by being in contact with respective inner surfaces of the outer container covers provided at both ends of the outer container.

According to this configuration, the both end portions of the inner container can be held so as to be sandwiched between the pair of outer container lid portions, and thus the inner container can be prevented from moving inside the outer container. Thus, it is possible to prevent the inner container from being damaged by the impact of the inner surface of the outer container when the inner container moves inside the outer container and hits the inner surface of the outer container when the chlorine dioxide generator or the like is carried.

An 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, the second component that generates chlorine dioxide gas by reacting with chlorite is an acidic substance, so that chlorite and the acidic substance can be reacted with each other to easily generate chlorine dioxide gas.

A ninth feature 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, the acidic substance is excellent in storage stability of sulfuric acid, does not generate corrosive gas, and does not change in concentration even after being supported on the porous substance, and therefore, the handling property is excellent. In addition, since sodium chlorite or potassium chlorite is easily available as chlorite, the present invention can be easily carried out.

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

According to this configuration, when the concentration of the acidic substance exceeds 30% by weight, the viscosity of the solution becomes high and dispersion becomes difficult, and variation in the prepared acidic substance becomes large, which is not preferable. In addition, when the concentration of the chlorite is less than 0.1 wt%, there is a possibility that the chlorite becomes insufficient in the generation of chlorine dioxide gas, and when the concentration exceeds 30 wt%, there is a possibility that the chlorite is saturated and crystals are easily precipitated. Therefore, in consideration of safety, stability, efficiency of generating chlorine dioxide gas, etc., 0.1 to 30% by weight is preferable.

Drawings

Fig. 1 is a schematic view showing a chlorine dioxide generator according to the present invention.

Fig. 2 is a schematic diagram showing an apparatus for collecting chlorine dioxide gas.

Fig. 3 is a graph showing the relationship between the collecting time and the collecting amount of chlorine dioxide gas.

Fig. 4 is a graph showing the relationship between the amount of sodium chlorite and the amount of chlorine dioxide gas collected.

Detailed Description

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 a chlorite salt, which is a first component, with a second component that reacts with the chlorite salt to generate chlorine dioxide gas.

As shown in fig. 1, a chlorine dioxide generator X of the present invention includes: an outer container 10 which is deformable by application of an external force and is capable of discharging a liquid, an inner container 20 which is contained in the outer container 10 and is breakable to seal the chlorite aqueous solution 1, and a bag-like body 40 which contains a solid composition 30 containing the second component 2 and the outer container 10 and is provided with a gas permeable portion 41 having gas permeability.

The second component may be a substance that reacts with chlorite to generate chlorine dioxide gas, and may be, for example, an acidic substance or a substance that does not contain an acidic substance and reacts with chlorite as a monomer to generate chlorine dioxide. In the present embodiment, a case where the second component 2 is an acidic substance will be described. The acidic substance is preferably an acidic substance which exhibits acidity by dissolving in water.

(outer container)

The outer container 10 may be deformed by applying an external force and may have a space in which the inner container 20 can be accommodated. As a material exhibiting such a pattern, for example, a flexible material can be exemplified. The flexibility here means that the shape can be easily deformed by, for example, bending into an arc shape when an external force is applied, and the original shape can be easily returned when the applied force is released. Specific examples of the resin material having flexibility include polyethylene, polypropylene, and silicon.

Examples of the shape of the outer container 10 include, but are not limited to, a tubular shape (test tube shape), a rod shape, a bag shape, and a box shape. For example, in the case where the outer container 10 is formed in a bag shape, the inner container 20 is previously accommodated in the bag-shaped outer container 10. The bag-shaped outer container 10 is preferably squeezed and deformed to such an extent that the inner container 20 is broken when an external force is applied. In the present embodiment, a case where the outer container 10 is tubular will be described.

The outer container 10 is configured to be able to discharge liquid. In the present embodiment, a case where the outer container lid 11 having a plurality of small openings 11a (for example, 5 openings having a diameter of 2 mm) formed therein is provided at both end portions of the outer container 10 will be described. That is, the liquid can be discharged through the opening 11a formed in the outer container lid 11.

In a state where the inner container 20 is held inside the outer container 10, both end portions of the inner container 20 are preferably supported in contact with respective inner surfaces of the outer container lid portions 11 provided at both end portions of the outer container 10. With this configuration, since both end portions of the inner container 20 can be held so as to be sandwiched between the pair of outer container lid portions 11, the inner container 20 can be prevented from moving inside the outer container 10. This prevents the inner container 20 from being damaged by an impact which would otherwise be caused by 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 or the like is carried.

(inner container)

The inner container 20 is a breakable container that can seal the aqueous chlorite solution 1. The destructibility referred to herein means a property that can be destroyed by being deformed or bent (or bent) by applying a force from the outside to easily cause cracking or breaking, but is not a property that can be destroyed by shaking or a slight impact during transportation or storage. Examples of the breakable sealed body include a glass ampoule and a thin plastic container. In the case of using a plastic container as the breakable inner container 20, it may be configured as follows: in this container, a weak portion is artificially provided in advance, and when the container is bent (or attempted to be bent) by applying a force from the outside, the weak portion is cracked or broken (broken).

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

(bag-shaped body)

The bag-shaped body 40 is provided with a ventilation portion 41 having air permeability. In the present embodiment, a description will be given of a case where the bag-like body 40 is formed in a rectangular shape and the ventilation portion 41 is formed in a planar shape in a plan view, but the present invention is not limited thereto. In this configuration, the air permeable portion 41 can be formed on at least one side of the back surface of the bag-shaped body 40. Accordingly, since chlorine dioxide gas generated inside the bag-shaped body 40 can be released from at least the entire surface of one side of the bag-shaped body 40, a large amount of generated chlorine dioxide gas can be rapidly released to the outside of the bag-shaped body 40.

The bag-like body 40 has gas-permeable and liquid-impermeable properties on at least one of the front and back surfaces. That is, the front surface of the bag-shaped body 40 may be gas-permeable and liquid-impermeable, and the back surface may be gas-impermeable and liquid-impermeable, or the front surface may be gas-permeable and liquid-impermeable, and the back surface may be gas-permeable and liquid-impermeable, or both of the front and back surfaces may be gas-permeable and liquid-impermeable. At this time, the bag-shaped body 40 can be configured to be translucent on at least one of the front and back surfaces.

The peripheral edge 40a of the bag-like body 40 is preferably bonded by heat sealing, ultrasonic sealing, adhesive, or the like.

In order to make the front or rear surface of the bag-like body 40 gas-permeable and liquid-impermeable, the gas-permeable portion 41 provided on the front or rear surface may be formed by processing a synthetic resin material into a nonwoven fabric. The nonwoven fabric may be, for example, a high-density polyethylene nonwoven fabric sheet, but is not limited thereto. Examples of the nonwoven fabric include, but are not limited to, Exepol (registered trademark, manufactured by mitsubishi chemical corporation), Tyvek (registered trademark, manufactured by dupont), GORE-TEX (registered trademark, manufactured by w.l. GORE & associations corporation), and the like.

In order to make the front or rear surface of the bag-shaped body 40 gas-liquid impermeable, a sheet material including a synthetic resin material such AS Acrylonitrile Styrene (AS) resin, Acrylonitrile Butadiene Styrene (ABS) resin, ethylene vinyl alcohol (EVOH) resin, vinyl chloride resin, polyethylene resin, polypropylene resin, polyolefin resin, or the like may be used, but is not limited thereto.

(chlorite salt)

Examples of the chlorite used in the present invention include alkali metal chlorite and alkaline earth metal chlorite. Examples of the alkali metal chlorite include sodium chlorite, potassium chlorite, and lithium chlorite, and examples of the alkaline earth metal chlorite include calcium chlorite, magnesium chlorite, and barium chlorite. Among them, sodium chlorite and potassium chlorite are preferable, and sodium chlorite is most preferable, from the viewpoint of easy availability. These chloroxoxygen bases may be used alone in 1 kind, or two or more kinds may be used in combination.

The proportion of chlorite in the aqueous chlorite solution is preferably 0.1 to 30 wt%. When the amount is less than 0.1 wt%, there is a possibility that the generation of chlorine dioxide gas is insufficient, and when the amount exceeds 30 wt%, there is a possibility that chlorite is saturated and crystals are easily precipitated. In consideration of safety, stability, efficiency of generation of chlorine dioxide gas, and the like, the ratio of the chlorite salt in the aqueous chlorite salt solution is preferably 15 to 25 wt%, and more preferably 20 to 25 wt%.

(acidic substance)

The acidic substance usable in the present invention is an inorganic acid, an 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, pyrrolinic acid, sulfamic acid, etc., organic acids such as 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, glutaric acid, etc., and salts thereof. Examples of the salt of the inorganic acid include a salt of dihydrogen phosphate (sodium salt, potassium salt, the same applies hereinafter), a mixture of dihydrogen phosphate and monohydrogen phosphate, and the like.

Among them, sulfuric acid is preferably used for the reasons of excellent storage stability, no generation of corrosive gas, no change in concentration after loading (impregnation) in a porous material, and the like. The concentration of sulfuric acid is preferably 30 wt% or less, and preferably 10 wt% or less from the viewpoint of safety, in the final concentration in the state of being contained in the solid composition 30. The acidic substance may be used alone in 1 kind, or two or more kinds may be used in combination.

(solid composition)

The solid composition 30 may be in a form containing the second component (acidic substance), and may be in a form of, for example, crystals of an acidic substance, a porous substance containing an acidic substance, or the like. In the present embodiment, a case where the solid composition 30 contains a porous material as a carrier will be described. That is, the "solid composition 30 containing the second component 2" is a porous material containing an acidic material which exhibits acidity by dissolving in water.

The solid composition 30 is preferably in the form of granules. By forming the solid composition 30 into a granular form, the solid composition 30 can easily move freely inside the bag-shaped body 40. Therefore, when the solid composition 30 containing the second component (acidic substance) is brought into contact with the chlorite aqueous solution, the solid composition 30 can be freely moved by, for example, shaking the bag-shaped body 40 left and right, and the reaction between the chlorite aqueous solution and the acidic substance can be efficiently performed, and chlorine dioxide gas in accordance with the theoretical reaction value can be generated.

The porous material may be, for example, a porous material or a calcined aggregate, but 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, porous silica is preferably used in terms of easy availability, excellent porosity (large porous space), and easy incorporation of an acidic substance or chlorite. The specific surface area of the porous silica is not particularly limited.

As the calcined aggregate, for example, a material obtained by calcining bones, shells, and corals of animals (including mammals, fishes, and birds) to prepare a crushed sheet, a particle, or a powder can be used.

The particle size of the porous material is preferably about 0.05 to 10mm, for example. The porous material is preferably selected so that the moisture adsorption capacity at room temperature is 5% or more. In addition, the porous material is preferably selected to have 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 angle of repose of CARiACT Q-10 (Fuji Silysia Chemical Co., Ltd.) which is one type of porous silica is 1.7 to 4.0mm in particle diameter: 19 °, 75-500 μm: 23 ℃ and a repose angle of CARiACT G-10 (Fuji SiLysia Chemical Co., Ltd.) with a particle diameter of 0.35-1.7 mm: 35 deg.

In the chlorine dioxide generator X having such a configuration, the outer container 10 is deformed by applying an external force, so that the breakable inner container 20 housed therein can be easily broken. 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 be able to discharge the liquid 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), thereby generating chlorine dioxide gas. Chlorine dioxide gas generated in the bag 40 is released from the gas permeable portion 41 having gas permeability to the outside of the bag 40.

The place (fumigation place) where the chlorine dioxide generator X of the present invention is used is not particularly limited, and it can be used in any place such as general households (living rooms, doorways, toilets, kitchens, etc.), industrial uses (factory uses), medical places such as hospitals, clinics, nursing homes, etc., schools, station buildings, public toilets, etc. In addition, the present invention can be used not only in a wide space such as an indoor space where people can live but also in a narrow space such as a refrigerator, a shoe box, and a vehicle interior (a car, a bus, a train). It will be seen that the size of the space in which the generating means of the present invention can be used is not particularly limited, but is preferably a closed space.

Since chlorine dioxide gas has very high solubility, a porous material such as zeolite or silica gel is used as a carrier in order to minimize free water in the reaction system during the reaction. By reducing the amount of free water in the reaction system, the reaction rate of the acid substance such as sulfuric acid and the chlorite can be increased, and the amount of dissolved chlorine dioxide gas can be reduced. Therefore, the chlorine dioxide gas can be generated substantially in a short time (instantaneously) at a high concentration.

As can be seen, the chlorine dioxide generator X of the present invention can rapidly generate a large amount of chlorine dioxide gas. Therefore, the time for fumigation treatment (human avoidance time) of the space in the fumigation chamber can be shortened, and after ventilation, a human can immediately enter the fumigation chamber.

Another embodiment

In the above embodiment, the case where the solid composition 30 containing the second component 2 of the acidic substance is used while sealing the chlorite aqueous solution 1 in the inner container 20 was described. In contrast, in the present embodiment, a case will be described where an 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.

That is, the chlorine dioxide generator X according to another embodiment includes: an outer container 10 configured to be deformable by application of an external force and to be capable of discharging a liquid, an inner container 20 which is contained in the outer container 10 and is breakable to seal an aqueous solution of a second component (acidic substance), and a bag-like body 40 which contains a solid composition 30 containing chlorite and the outer container 10 and is provided with a gas permeable portion 41 having gas permeability.

In the chlorine dioxide generator X having such a configuration, the outer container 10 is deformed by applying an external force, so that the breakable inner container 20 housed therein can be easily broken. At this time, the aqueous solution of the acidic substance flows out from the inner container 20 into the outer container 10. Since the outer container 10 is configured to be able to discharge 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, thereby generating chlorine dioxide gas. Chlorine dioxide gas generated in the bag 40 is released from the gas permeable portion 41 having gas permeability to the outside of the bag 40.

The acidic substance that can be used in this embodiment may be the one described above. When sulfuric acid is used as the acidic substance, the concentration of the aqueous solution is preferably 30 wt% or less.

In the present embodiment, the final concentration of the chlorite in the solid composition 30 may be 30 wt% or less, and is preferably 20 to 25 wt% from the viewpoints of safety, stability, and efficiency of generating chlorine dioxide gas.

Examples

Example 1

Chlorine dioxide is generated by using the chlorine dioxide generator X of the present invention, and the amount of generated chlorine dioxide gas is determined. The chlorine dioxide generator X includes: a polypropylene resin cartridge (outer container 10: Φ 20, full length 150mm) deformable by application of an external force, a cylindrical glass ampoule (inner container 20: Φ 8, full length 120mm) sealed with a sodium chlorite aqueous solution, and a nonwoven fabric bag (bag 40: 120mm × 200mm) containing CARiACT Q-10 (particle size 1.7-4.0 mm, manufactured by Fuji SiLysia Chemical) impregnated with sulfuric acid as an acidic substance (solid composition 30) and a resin cartridge by a conventionally known method. Outer container caps 11 each having 5 openings 11a of 2mm in diameter are attached to both ends of the resin cylinder (outer container 10). Tyvek (registered trademark, manufactured by dupont) was used as the front surface of the nonwoven fabric bag (bag-shaped body 40), and a sheet containing vinyl chloride resin was used as the back surface, and both were heat-sealed so that the seal width of the peripheral edge portion 40a became 10 mm. The amount of sodium chlorite contained in the aqueous sodium chlorite solution was 890mg, the amount of sulfuric acid contained in the solid composition 30 was 260mg, and the theoretical value of generated chlorine dioxide gas was 330 mg.

After the resin cylinder (outer container 10) is deformed from the outside of the nonwoven fabric bag (bag-shaped body 40) to break the glass ampoule (inner container 20) housed inside the resin cylinder, the sodium chlorite aqueous solution is brought into contact with the silica gel (solid composition 30) impregnated with sulfuric acid by vibrating up and down several times at a high speed, thereby generating chlorine dioxide gas. As shown in fig. 2, a chlorine dioxide generator X for generating chlorine dioxide gas was immediately placed in a vinyl chloride container 51, and chlorine dioxide gas was dissolved in an aqueous potassium iodide solution (200mL) contained in another container 52 to collect chlorine dioxide gas. The collection was stopped at a predetermined 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. 3.

Titration method

5mL of an aqueous potassium iodide solution in which chlorine dioxide gas was dissolved was collected, and iodine titration was performed using 0.1moL/L of a sodium thiosulfate solution under acidic conditions. The amount (mg) of chlorine dioxide gas collected in the potassium iodide aqueous solution was calculated according to the following equation.

Chlorine dioxide (mg) ═ titration amount × F × 1.349 ÷ 5 × 200 (factor of F: 0.1moL/L sodium thiosulfate solution) (1.349: 0.1moL/L sodium thiosulfate solution 1mL corresponds to chlorine dioxide 1.349mg)

[ Table 1]

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

Example 2

In the chlorine dioxide generator X of example 1, chlorine dioxide was generated by using a device in which the amount of sodium chlorite contained in the sodium chlorite aqueous solution was changed to 400 to 1200mg and the amount of sulfuric acid contained in the solid composition 30 was changed to 115 to 350mg, and the amount of gas of chlorine dioxide collected was determined. The results are shown in Table 2 and FIG. 4.

[ Table 2]

As a result, it was found that, in the chlorine dioxide generator X, as the amount of sodium chlorite contained in the sodium chlorite aqueous solution increases, the amount of chlorine dioxide gas collected also increases as a function of time. Since the reaction efficiency is almost 100%, it is considered that chlorine dioxide gas is efficiently generated as a theoretical value. Therefore, it is considered that the amount of the gas of chlorine dioxide to be generated can be easily adjusted by adjusting the amount of sodium chlorite contained in the sodium chlorite aqueous solution in the chlorine dioxide generator X of the present invention.

Industrial applicability

The present invention can be used for a chlorine dioxide generator that generates chlorine dioxide gas by reacting a chlorite salt as a first component with a second component that generates chlorine dioxide gas by reacting with the chlorite salt.

Description of the reference numerals

X chlorine dioxide generator

1 aqueous chlorite solution

2 second component

10 outer container

11 outer container cover

20 inner side container

30 solid composition

40 bag-shaped body

41 air-permeable part

Claims (10)

1. A chlorine dioxide generating device, which is characterized in that,

a chlorine dioxide generator for generating chlorine dioxide gas by reacting a chlorite salt as a first component with a second component that reacts with the chlorite salt to generate chlorine dioxide gas, the chlorine dioxide generator comprising:

an outer container configured to be deformable by application of an external force and capable of discharging a liquid;

a breakable inner container which is accommodated in the outer container and hermetically seals the aqueous chlorite solution; and

and a bag body which contains the solid composition containing the second component and the outer container and is provided with a breathable part having breathability.

2. A chlorine dioxide generating device, which is characterized in that,

a chlorine dioxide generator for generating chlorine dioxide gas by reacting a chlorite salt as a first component with a second component that reacts with the chlorite salt to generate chlorine dioxide gas, the chlorine dioxide generator comprising:

an outer container configured to be deformable by application of an external force and capable of discharging a liquid;

a breakable inner container which is accommodated in the outer container and hermetically seals an aqueous solution of the second component; and

and a bag-shaped body which contains the solid composition containing the chlorite and the outer container, and is provided with a breathable part having breathability.

3. The chlorine dioxide generating apparatus according to claim 1 or 2,

the bag-shaped body is formed in a rectangular shape in a plan view, and the ventilation portion is formed in a planar shape.

4. The chlorine dioxide generator according to any one of claims 1 to 3, wherein,

the air-permeable section is formed by processing a synthetic resin material into a nonwoven fabric.

5. The chlorine dioxide generating apparatus according to any one of claims 1 to 4,

the solid composition comprises a porous material as a carrier.

6. The chlorine dioxide generating apparatus according to any one of claims 1 to 5, wherein,

the solid composition is in the form of granules.

7. The chlorine dioxide generating apparatus according to any one of claims 1 to 6,

the outer container and the inner container are formed in a tubular shape, outer container lid portions are provided at both end portions of the outer container, and both end portions of the inner container are supported by being in contact with respective inner surfaces of the outer container lid portions provided at both end portions of the outer container.

8. The chlorine dioxide generating apparatus according to any one of claims 1 to 7,

the second component is an acidic substance.

9. The chlorine dioxide generating device according to claim 8,

the acidic substance is sulfuric acid and the chlorite is sodium chlorite or potassium chlorite.

10. Chlorine dioxide generating device according to claim 8 or 9,

the concentration of the acidic substance is 30 wt% or less, and the concentration of the chlorite is 0.1 to 30 wt%.