KR101628927B1 - Photochemical Chlorine Dioxide Generator with fixed quantity - Google Patents

Abstract

The present invention relates to a photochemical chlorine dioxide generating apparatus capable of generating a quantitative reaction, comprising: a reactor for generating chlorine dioxide by a photochemical reaction; A light source for irradiating ultraviolet rays having a predetermined wavelength to the reactor; A chlorite injector installed at an upper portion of the reactor and driven by a servo motor connected to a capsule storing chlorite to inject a certain amount of chlorite controllable by the reactor; An air pump for injecting air into the reactor; And a storage device for discharging and storing the chlorine dioxide gas generated in the reactor.
The present invention has the advantage of lowering the price by using a single material, providing a highly safe apparatus because it does not use dangerous acid, and it is good in production yield and easy to control the concentration of chlorine dioxide according to the concentration of chlorite The present invention provides an apparatus for producing chlorine dioxide which not only does not cause an unpleasant smell of chlorine dioxide at a high concentration but is easy to mass-produce and mass-producible.

Description

Technical Field [0001] The present invention relates to a photochemical chlorine dioxide generating apparatus capable of generating a quantitative amount,

The present invention relates to a chlorine dioxide generating apparatus, and more particularly, to a photochemical chlorine dioxide generating apparatus capable of stably controlling and generating a quantity of chlorine dioxide.

Chlorine dioxide is widely applied in many fields and has a very high commercial and industrial importance. At present, chlorine dioxide is consumed in large quantities as a bleaching agent for wood pulp, paper, oils and fats, petroleum, resins and powders.

Due to the recent deregulation, chlorine dioxide has been used increasingly as a disinfectant and disinfectant in the food processing industry. The new federal guidelines have allowed the use of chlorine dioxide for meat, milk products manufacturing, fruit and vegetable processing, and processed foods. In most cases, chlorine dioxide does not cause organoleptic impairment of food.

Chlorine dioxide is also widely used as a pollution control agent and a water treatment agent in the wastewater treatment industry. Chlorine dioxide is an excellent sulfur remover, used in washing towers used in wastewater, and also in the fat (refined), gas and oil industries.

Chlorine dioxide has been increasingly used as an environmental and microbial control agent due to its unique properties. Chlorine dioxide shows high reaction specificity for certain industrial pollutants such as sulfur, amines, mercaptans and cyanides, but does not show reactivity for ammonia or most organic compounds.

The highly selective nature of chlorine dioxide is important for its bactericidal action. Unwanted sterilization by-products such as trihalomethane and polychlorobiphenyl are not produced and chlorine or hypochlorite is produced. Chlorine dioxide shows its effect over a wide pH range, does not dissociate in solution (without forming ions), has a fast bactericidal action, and does not accumulate in the treatment solution.

Chlorine dioxide is prohibited to be transported and stored, and its transportation and storage are dangerous, so it is mostly produced and consumed locally. Chlorine dioxide has been produced by several conventional chemical and electrochemical processes. The most common production method is to acidify an aqueous solution of sodium chlorite. Strong acids such as sulfuric acid and hypochlorous acid have a high yield of chlorine dioxide, while weak acids such as citric acid and lactic acid have a very low yield.

The acidification of chlorite to chlorine dioxide increases its yield when chlorine donors such as hypochlorous acid or chlorine gas are present. Hypochlorous acid, strong acid and chlorine gas must be produced and stored locally, so there is an additional risk, which puts the burden on the end user to regular inspection.

The electrochemical generation apparatus is designed to solve such a problem. Such an electrochemical generation apparatus utilizes a single precursor, which typically uses chlorous acid. The resulting chlorine dioxide is separated from the electrolyte solution by the gas permeable membrane. However, chlorine dioxide produced in this way is not widely used because of the disadvantages such as generation of explosive hydrogen gas accompanied with a high cost cost. Such an electrochemical generation apparatus has a great disadvantage that it uses a lot of electric power as well as hydrogen, and the manufacturing cost is very high due to the complexity of the structure.

A better and alternative method of producing chlorine dioxide is by photochemical oxidation. For photochemical reactions of oxyanion of chlorine dioxide and chlorine, see E. J. Brown and M. et al. Reported by M. Cheung (1932), and are disclosed in U.S. Patent Nos. 2,043,284, 2,457,285 and 2,683,651.

More recent techniques for photochemical methods are disclosed in U.S. Patent Nos. 4,414,180 and 4,456,511, the inventors of which are Fisher. This technology relates to an apparatus for generating chlorine dioxide from sodium chlorite by externally inserting a fluorescent lamp. The sodium chlorite is photochemically oxidized to produce chlorine dioxide, which is removed from the aqueous solution along with nitrogen gas or air.

A more detailed technique is also described by the inventor. U.S. Patent No. 4,874,489 to J. Callerame, which discloses a tubular chamber containing sodium chlorite. An ultraviolet light source, that is, a low-pressure mercury vapor lamp, is provided in the container, and the inner wall of the container is made of an ultraviolet reflector such as polished aluminum. When the concentration of chlorine dioxide reaches 10% by weight and the entire reaction product is consumed in the vessel, the reaction is terminated. 10% by weight is the highest limit defined by the explosive nature of chlorine dioxide. In addition, although a UV lamp is widely used as a light source in a chlorine dioxide generating apparatus using such a photochemical method, it is disadvantageous in that it is difficult to reduce the size and weight of the apparatus due to a large size of an ultraviolet lamp, resulting in a large power loss.

And, similar to U. Kallarame's patent, U.S. Patent No. 4,877,500 discloses a technique for producing chlorine dioxide by a photochemical method using a mixture of chlorine and oxygen and an aqueous solution of sodium hypochlorite. As in the Kalalame patent, the aqueous solution remains in the tubular vessel until the maximum concentration of chlorine dioxide reaches 10 wt.%. Afterwards, the entire reaction contents containing chlorine dioxide are recovered and transported to the site. There have been reports of two explosions in the photochemical reactions of oxygen and chlorine.

A technique for improving safety in a photochemical method is disclosed in U.S. Patent No. 6,171,558 by Simpson. This patent discloses a technique of providing an ultraviolet lamp in a container containing an aqueous chlorite salt. In this technique, aqueous chlorites salify the flow tube by air or gas spray. This configuration effectively recovers chlorine dioxide, thereby reducing the risk of explosion due to the accumulation of chlorine dioxide.

Although safety has been somewhat improved in conventional photochemical methods, the following problems still remain.

(1) In the prior art, it is impossible to continuously supply fresh sodium chlorite, and it is impossible to remove spent reaction products such as sodium chloride and chlorate.

(2) In the prior art, there is a need for an additional air movement device for venting gas.

(3) In prior art gas sprays, the concentration of chlorine dioxide is limited to 10% by weight due to the risk of explosion.

(4) In the prior art, the production of chlorine dioxide can not be directly controlled by adding a chlorite precursor. In the prior art, the production of chlorine dioxide has to be controlled by the luminous intensity of the lamp and the gas emission rate.

(5) It is difficult to control the injection amount of chlorite in the conventional art, and it is difficult to stably produce chlorine dioxide by this injection.

(6) In the prior art, the device configuration is complicated and scale-up is difficult.

Chlorine dioxide is widely used industrially and commercially, and its use is likely to increase. Especially, due to the instability of sterilization and the distribution process, massive waste loss cost is produced in the fruit part, and the time required for the inspection due to the packaging of the product is wasted, the concern about safe food is increased, It is necessary to develop a stable and efficient apparatus for producing chlorine dioxide because it is necessary to develop a technology for prevention of corruption and enhancement of preservation.

Korean Pub. No. 10-2005-0015949 (Public Date: February 21, 2005)

An object of the present invention which intends to solve the above problems is to provide an apparatus for producing chlorine dioxide by causing a photochemical reaction between chlorite and ultraviolet rays and comprises a chlorite injector capable of stably and easily injecting a certain amount of chlorite into the reactor, To provide an apparatus capable of enhancing stability and producing efficient chlorine dioxide.

According to an aspect of the present invention, there is provided a process for producing chlorine dioxide by a photochemical reaction; A light source for irradiating ultraviolet rays having a predetermined wavelength to the reactor; A chlorite injector installed at an upper portion of the reactor and driven by a servo motor connected to a capsule storing chlorite to inject a certain amount of chlorite controllable by the reactor; An air pump for injecting air into the reactor; And a storage device for discharging and storing the chlorine dioxide gas generated in the reactor.

Here, the storage device may include: a discharge pipe for discharging the chlorine dioxide gas generated in the reactor to the outside; And a storage tank for storing chlorine dioxide discharged in connection with the discharge pipe, wherein the chlorate injector further comprises: a capsule for storing the chlorate salt; and a control unit for controlling the amount of the chlorite stored in the capsule, And a servomotor for linearly driving the dispenser at a constant speed.

The dispenser includes a cylindrical fixed base mounted on an injection port in the upper portion of the reactor, a cylindrical dispenser housing detached by vertical movement with the fixed base, a cylindrical body fixedly installed in the center of the dispenser housing, A ring-shaped step that is fixed to the inner surface of the housing and surrounds the outer side of the injection nozzle, and a spring provided between the ring-shaped step and the lower end of the injection nozzle.

Preferably, the injection amount is controlled by at least one of the number, the size, and the shape of the through holes formed in the side surface of the injection nozzle, and the ultraviolet ray having the specific wavelength has a wavelength of 190 to 390 nm It may be ultraviolet ray.

In addition, the chlorite is preferably sodium chlorite (NaClO ₂ ) having a concentration of 25% to 30%, and the storage tank is preferably a water tank for storing chlorine dioxide gas discharged from the discharge pipe, The ultraviolet light source is preferably a deuterium lamp connected to an external power source and installed in the reactor.

In addition, it is preferable that the reactor is equipped with a stirrer for increasing the reaction rate, and the head formed at the lower end of the injection nozzle preferably has a tapered shape with a downward cross-sectional area, It is preferable that a plurality of linear grooves are formed in a spiral or longitudinal direction and the nozzle pins extending downwardly in the grooves are removable.

The present invention is as follows: First, there is an advantage that a price can be lowered by using a single substance. Second, a safe device is provided because no dangerous acid is used. Third, production yield is good. Fourth, The present invention provides a chlorine dioxide generating device which is easy to control the concentration of chlorine dioxide according to the concentration of chlorine dioxide, does not cause an unpleasant odor of chlorine dioxide at a high concentration, is easy to mass-produce, and has good mass productivity.

The present invention also provides an improved chlorine dioxide generating apparatus which can easily control the injection amount of chlorite and can stably control the amount of chlorite injection or the amount of chlorine dioxide to be produced, and also has a simple structure and a low production cost.

Also, the reaction rate can be increased by using the magnetic bar of the stirrer installed in the reactor, so that the amount of chlorine dioxide can be easily increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a configuration of a chlorine dioxide generating apparatus capable of generating a quantitative quantity according to an embodiment of the present invention,
2 is a schematic view showing a configuration of a chlorate injector used in an apparatus for producing chlorine dioxide according to an embodiment of the present invention,
FIG. 3 and FIG. 4 are views showing the structure of a chlorite injector according to another embodiment of the present invention,
5 is a case of putting the using amount that can occur chlorine dioxide generating apparatus according to an embodiment of the invention, different amount 28% NaClO ₂ 0.3ml, 0.6ml and 0.9ml, respectively by one driving of the dispenser, time Of the chlorine dioxide gas.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. Also, the same reference numerals denote the same components throughout the specification.

The expression "and / or" is used herein to mean including at least one of the elements listed before and after. Also, singular forms include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a configuration of a chlorine dioxide generating apparatus capable of generating a metered amount according to an embodiment of the present invention; FIG. As shown in FIG. 1, a chlorine dioxide generating apparatus capable of generating quantitation according to an embodiment of the present invention includes: a reactor 100 for generating chlorine dioxide by a photochemical reaction; A light source 200 for irradiating ultraviolet rays having a predetermined wavelength to the reactor 100; A chlorite injector 300 installed at the upper part of the reactor 100 and driven by a servo motor 350 connected to capsules storing chlorite to inject a certain amount of chlorite controllable by the reactor 100; An air pump 400 for injecting air into the reactor 100; And a storage device 500 for discharging and storing the generated chlorine dioxide gas to the outside.

As described above, the present invention relates to a device for generating chlorine dioxide by causing a photochemical reaction between chlorite and ultraviolet rays, and is provided with a chlorite injector 300 capable of stably and easily injecting a certain amount of chloric acid into the reactor 100 Thereby improving the stability and producing efficient chlorine dioxide.

In this embodiment of the present invention, the use of the conventional strong acidic solution reduces the risk of chlorine dioxide generation by chemical reaction, and it is not difficult to control the concentration of chlorine dioxide by the electrolysis method. Since quantitative determination of chlorine dioxide can be selectively generated as needed, it is advantageous in terms of mass production and lowering the production cost.

1, the apparatus for generating chlorine dioxide capable of generating quantities according to an embodiment of the present invention includes a reactor 100, a light source 200, a chlorite injector 300, an air pump 400, A discharge pipe 450 and a storage tank 500 through which generated chlorine dioxide is discharged and stored.

The reactor 100 is a container for storing a chlorine dioxide generating solution. The ultraviolet lamp is installed inside the reactor 100, and a chlorine dioxide generating solution is injected into the upper part by a chlorite injector 300 to form the chlorine dioxide generating solution. And a photochemical reaction with ultraviolet light of a specific wavelength, which is irradiated by the ultraviolet light, to produce chlorine dioxide.

Wherein the chlorine dioxide producing solution comprises at least one activating factor which is exposed to ultraviolet light to produce chlorine dioxide by photochemical reaction, wherein the activating factor is dispersed or dissolved in a water-soluble solvent. The chlorine dioxide generating solution may contain, for example, an active agent comprising an alkali metal-based chlorine salt and an alkaline earth metal-based chlorine salt dispersed or dissolved in a water-soluble solvent, chlorine, hypochlorite, trichlorocyanine acid and / But are not limited to, salts of organic chlorine donors such as sodium isocyanurate.

The water-soluble solvent can include water, tap water, reprocessed water, recycled water, water containing the desired additives, and spent active solution recycled. Preferably, the chlorine dioxide generating solution comprises sodium chlorate (NaClO ₂ ) or calcium hypochlorite (Ca (ClO) ₂ ) as the activating factor. It is preferable that sodium chlorite or sodium chlorocarbonate is contained in an amount of about 1% by weight to 10% by weight. And the concentration is preferably 25% to 30%. Here, the amount of sodium hypochlorite is similar to that of sodium chlorite, but it has a great advantage that the storage time can be extended several months and the sterilizing ability is much higher.

The reactor 100 may include glass, quartz, synthetic resin, etc. In the embodiment of the present invention, it is preferable to install a deuterium ultraviolet lamp in the reactor 100 for more direct and efficient ultraviolet light dimming. It is preferable to use quartz, suprasil, beaker, and teflon as the material of the reactor 100 so that ultraviolet rays can be irradiated through the vessel and the reactor 100 may be made of PP series It is preferable to use a plastic or glass material of Pyrex glass (a special glass having excellent thermal shock resistance and chemical durability). This is because it is easy to judge the material inside the reactor at the completion of the reaction can do.

In addition, the reactor can be made smaller than the conventional ultraviolet lamp, and the structure of the reactor can be freely selected and used. For example, it is best suited to the overall design of a system, such as round, triangular, and narrow rectangles, and is suitable for structures with high stability and efficiency of the reaction process.

In the embodiment of the present invention, in order to increase the rate of production of chlorine dioxide and increase the production yield by increasing the rate of photochemical reaction, a stirrer may be installed in the reactor or the magnetic bar may be stirred by installing an agitator .

The ultraviolet light source 200 for irradiating ultraviolet light to the chlorine dioxide generating solution stored in the reactor 100 may be installed inside or outside the reactor 100 and may be connected to the external power source To irradiate ultraviolet light into the inside of the reactor (100).

In the embodiment of the present invention, it is preferable to use a deuterium lamp as the light source 200. In addition, a UV LED light source can be used, and ultraviolet light of a specific wavelength can be efficiently irradiated into the reactor 100 The ultraviolet light source 200 can be used. The deuterium lamp used in the embodiment of the present invention is used as the ultraviolet light source 200 as one of discharge tubes using arc discharge. When the deuterium gas is enclosed in the quartz container and the light emission of the anode portion due to the discharge is drawn out, continuous spectrum light in the vicinity of 150 to 400 nm can be obtained.

In an embodiment of the present invention, unlike the conventional apparatus for producing chlorine dioxide using a photochemical reaction, it is preferable to irradiate ultraviolet light of a specific wavelength into the reactor 100, and a specific wavelength ranging from 190 nm to 390 nm is used . Therefore, in the embodiment of the present invention, it is preferable to use a deuterium lamp which generates ultraviolet light in the wavelength range.

The reason for using a chlorine dioxide generating device by photochemical reaction using a deuterium lamp that generates ultraviolet light having a wavelength in the range of 190 nm to 390 nm in the embodiment of the present invention is as follows. First, Secondly, it is a very safe device because it does not use dangerous acid. Third, when operated for at least 30 seconds by deuterium lamp, it produces about 50 ppm or more of chlorine dioxide, resulting in good production yield. Fourth, This is because the chlorine concentration can be easily controlled, the bad odor of the chlorine dioxide is not generated at a high concentration, and the mass production is easy and mass production is good.

 In order to collect the chlorine dioxide gas generated in the reactor 100, a device for effectively discharging the chlorine dioxide gas generated in the reactor 100 is needed. In the embodiment of the present invention, the reaction is activated, By injecting air into the reactor 100 to induce the discharge of the gas, the chlorine dioxide gas can be quickly transferred to the discharge device to increase the discharge efficiency. As an air injecting apparatus, an air pump 400 is used in the embodiment of the present invention. It is possible to selectively inject a certain amount of air into the reactor 100 through the air pump 400, .

The chlorine dioxide gas is generated in the reactor 100 and the generated chlorine dioxide gas is transferred from the inside of the reactor 100 to an external storage device for storage. The storage device 500 used in the embodiment of the present invention A discharge pipe 530 for connecting chlorine dioxide gas to the inside and the outside of the reactor, and a storage tank 550 for storing the chlorine dioxide gas transferred from the discharge pipe. It is preferred that the reservoir 550 use a water tank to store the chlorine dioxide gas stably and effectively.

Hereinafter, as a key feature of the present invention, a chlorite injection device for injecting chlorite as an activity factor of a chlorine dioxide generating solution for generating chlorine dioxide by a photochemical reaction inside a reactor 100 will be described in detail with reference to FIG. 2 I will explain. 2 is a schematic view showing a configuration of a chlorate injector 300 used in an apparatus for generating chlorine dioxide according to an embodiment of the present invention.

1 and 2, the chlorate injector 300 used in the chlorine dioxide generating apparatus according to the embodiment of the present invention includes a capsule 320 for storing the chlorite, A dispenser 330 for injecting a predetermined amount of the stored chlorate into the reactor 100 with a pressing force and a pushing device 355 and a servo motor 350 for linearly driving the dispenser 330 at a constant speed.

The dispenser 330 includes a cylindrical fixing table 331 mounted on the injection port on the upper part of the reactor 100 and a housing 333 having a cylindrical dispenser 330 removably attached to the fixing table 331 by vertical movement, A cylindrical injection nozzle 335 fixed to the center of the inside of the housing 333 of the dispenser 330 and having a plurality of through holes formed on the side thereof and a cylindrical injection nozzle 335 fixed to the inner surface of the housing 333, And a spring 339 disposed between the ring-shaped step and the lower end of the injection nozzle 335.

More specifically, a cylindrical fixing table 331 that is open to the injection port formed at the upper end of the reactor 100 is installed and the chlorite injector 300 is docked or demounted to the fixing table 331 to selectively inject chlorite The capsule 320 and the dispenser 330 are moved by the pushing device 355 and the servo motor 350 to determine the injection amount of chlorite.

The dispenser 330 used in the embodiment of the present invention is characterized in that the opened cylindrical housing 333 extends downward from the capsule 320 storing the chlorite and the center of the interior of the housing 333 is provided with a plurality of through holes 315 Is fixed to the cylindrical injection nozzle 335. A spring 339 is provided between a ring-shaped step that is fixed to the inner surface of the housing 333 and surrounds the side surface of the injection nozzle 335 and the lower end of the injection nozzle 335, The lower end of the injection nozzle 335 supported by the spring 339 moves upward and the ring-shaped step is moved to the lower end of the injection nozzle 335 The through hole 315 formed in the side of the injection nozzle 335 is opened and the chlorosalt stored in the capsule 320 is injected into the reactor 100 through the through hole 315 of the injection nozzle .

As shown in Fig. 2, when the dispenser 330 and the fixing table 331 are detached and separated (left side in the drawing), the entire injection nozzle 335 is sealed by the ring-shaped step due to the elastic force of the spring 339 , The chlorite stored in the capsule 320 can not be injected into the reactor 100 through the injection nozzle 335 and when the dispenser 330 is mounted or docked on the fixing table 331, The nozzle 315 is moved to the lower portion of the nozzle 335 and the through hole 315 is opened so that the chlorite can be injected into the reactor 100 through the through hole.

Such a structure facilitates the control of the opening and closing of the nozzle for injecting chlorite into the reactor 100 stably and simply by the linear movement drive of the servo motor 350 and the pushing device 355, It is possible to provide an improved chlorine dioxide generating apparatus which can reduce the risk of explosion which may occur by the injection of excessive chlorite and can stably control the injection amount of chlorite or the amount of chlorine dioxide to be produced and can reduce the production cost do.

FIGS. 3 and 4 are views showing the structure of a chlorite injector according to another embodiment of the present invention, which differs in the structure of injection nozzles.

3, the dispenser 330 applied to the embodiment of the present invention includes a cylindrical housing 333, an injection nozzle 335 fixed and positioned at the center of the inner wall, a ring- And a spring 339 fixed to the inner lower end of the housing. The head of the injection nozzle 335 is tapered so as to become narrower toward the lower end, It is preferable that a plurality of linear grooves 337 formed in a spiral or downward at regular intervals are formed.

The formation of the tapered injection nozzle 335 head and the spiral or linear groove 337 on the outer surface of the head causes the injection nozzle 335 to be shaken when the dispenser 330 is docked on the fixing table 331, And the long rod-like nozzle pin 338 leading to the inside of the reactor, if necessary, can be used as a guide for guiding the flow of leached or non-uniform chlorosurfactant solution, Can be inserted into the groove and the chlorosurfactant solution can be introduced into the reactor.

The housing 333 of the dispenser 330 applied to the embodiment of the present invention is preferably made of a plastic material because the capsule 320 in which the chlorite solution is stored is easily and stably So that replacement of the capsules 320 can be facilitated.

When the dispenser 330 is docked on the fixing table to move the injection nozzle 335 in the upward direction because the capsule 320 is in contact with the ring-shaped step 332, 315, since the upper portion of the housing 333 is completely exposed to the chlorite solution, it is difficult to use the metal material which reacts with the acid solution to corrode the chlorite solution.

In addition, it is preferable to use the metal support 336 for stable fixing at the lower end portion where the injection nozzle 335 is fixed. Accordingly, in the case of the fixing stand 331, the dispenser 330 moves downward, It is preferable to use a magnet made of a magnetic material so as to have an adhesive force automatically even when an external force is not supplied.

4, another embodiment of the present invention is characterized by mounting a long rod-shaped nozzle pin 338 downward in a groove 337 formed in the head of the injection nozzle, Thereby preventing the chlorite solution flowing along the side from leaking out of the reactor and inducing the chlorite solution to flow down into the reactor precisely along the nozzle fin 338. [ In this case, the nozzle pin 338 can be easily detached and attached to the groove formed in the head of the injection nozzle 335, and it is possible to indirectly control the injection rate or the injection amount of the chlorite solution selectively by changing the pin hole size.

5 is a case of putting the using amount that can occur chlorine dioxide generating apparatus according to an embodiment of the invention, different amount 28% NaClO ₂ 0.3ml, 0.6ml and 0.9ml, respectively by one driving of the dispenser, time Of the chlorine dioxide gas.

As shown in FIG. 5, it can be seen that as the concentration is increased to 0.3 ml, 0.6 ml and 0.9 ml, the concentration of chlorine dioxide gas produced and the rate of generation of chlorine dioxide gas with time increase relatively stably. This is advantageous in that it is easy to quantitatively inject the chlorite solution through the dispenser 330, and the quantitative yield can be easily controlled by injecting the quantitatively selected amount into the reactor 100 as needed.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: reactor, 200: light source, 300: chlorite injector,
400: air pump, 500: device, 530: discharge pipe, 550: storage tank

Claims (12)

A reactor for producing chlorine dioxide by photochemical reaction;
A light source for irradiating ultraviolet rays having a predetermined wavelength to the reactor;
A chlorite injector installed at an upper portion of the reactor and driven by a servo motor connected to a capsule storing chlorite to inject a certain amount of chlorite controllable by the reactor;
An air pump for injecting air into the reactor; And
And a storage device for discharging and storing chlorine dioxide gas produced in the reactor,
The chlorite injector includes a capsule for storing the chlorite, a dispenser for injecting a certain amount of the chlorite salt stored in the capsule into the reactor, and a servo motor for linearly driving the dispenser at a constant speed. A photochemical oxidizing chlorine generating device capable of quantitative generation.
The method according to claim 1,
The storage device comprising:
A discharge pipe for discharging the chlorine dioxide gas produced in the reactor to the outside; And
And a storage tank for storing the chlorine dioxide discharged in connection with the discharge pipe.
delete The method according to claim 1,
Wherein the dispenser comprises:
A tubular dispenser housing detachably attached to the fixed base by vertically moving the tubular dispenser housing; a cylindrical injection nozzle fixedly installed at the center of the dispenser housing and having a plurality of through holes formed in a side thereof; And a spring provided between the ring-shaped step and the lower end of the injection nozzle, the ring-shaped step being fixed to the inner surface of the injection nozzle and surrounding the outer side of the injection nozzle.
5. The method of claim 4,
The control of the injection amount is carried out,
And the shape of the through hole formed on the side surface of the injection nozzle is controlled to be at least one of the number, the size, and the shape of the through hole formed on the side surface of the injection nozzle.
The method according to claim 1,
The ultraviolet ray having the specific wavelength is,
Wherein the ultraviolet ray is an ultraviolet ray having a wavelength of 190 to 390 nm.
The method according to any one of claims 1, 2, and 4 to 6,
The chlorites,
Wherein the chlorine dioxide is sodium chlorite (NaClO ₂ ) or calcium hypochlorite (Ca (ClO) ₂ ) having a concentration of 25% to 30%.
The method according to any one of claims 1, 2, and 4 to 6,
The storage tank,
Wherein the chlorine dioxide gas is a water tank tank for storing the chlorine dioxide gas discharged from the discharge pipe.
The method according to any one of claims 1, 2, and 4 to 6,
The ultraviolet light source
Wherein the deuterium lamp is a deuterium lamp connected to an external power source and installed inside the reactor.
The method according to any one of claims 1, 2, and 4 to 6,
Wherein the reactor is equipped with an agitator for increasing the reaction rate.
5. The method of claim 4,
Wherein the head formed at the lower end of the injection nozzle has a tapered shape having a downward cross sectional area.
12. The method of claim 11,
Wherein a plurality of spiral or longitudinal straight grooves are formed on the outer surface of the head of the injection nozzle and a nozzle pin extending downwardly is detachably attached to the groove.

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