KR20110044580A - Manufacturing apparatus of chlorine dioxide - Google Patents

Abstract

PURPOSE: A chlorine dioxide producing device is provided to prevent the generation of disinfection byproduct after a disinfecting process for securing the hygienic condition of food. CONSTITUTION: A chlorine dioxide producing device includes a reaction bath(100), a first raw material supplying unit(300), a second raw material supplying unit(400), a solenoid valve(310), a decompressor(200), a filter(120), and a gas supply unit(500). The reaction bath includes an exhaust pipe(102) for discharging chlorine dioxide gas. The first raw material supplying unit supplies chlorite by being connected to a first inlet. The second raw material supplying unit supplies sulfuric acid by being connected to the first inlet. The solenoid valve controls the supplying amount of raw materials.

Description

Chlorine Dioxide Production Equipment {MANUFACTURING APPARATUS OF CHLORINE DIOXIDE}

The present invention relates to an apparatus for producing chlorine dioxide gas, and more particularly, to a chlorine dioxide which improves the yield of chlorine dioxide by improving the reaction yield of raw materials, including a reaction tank for generating chlorine dioxide and an auxiliary reaction tank for preliminary reaction of the raw materials. It relates to a manufacturing apparatus of.

Conventionally, chlorine disinfectants such as sodium hypochlorite are most widely used as disinfectants. However, chlorine disinfectants are produced by disinfection by-products (carcinogens such as THMs, HAAs, and HANs), which are harmful to the human body and flow into sewage after the second use, causing environmental pollution. In addition, as the pH of the chlorine disinfectant increases sterilization effect rapidly, and when disinfecting reacts with the organic compound occurs in addition to the oxidation reaction, substitution reaction, addition reaction and the like. On the other hand, after disinfection with a chlorine disinfectant, bacteria re-produce, and the effect of inactivation of protozoa and removal of heavy metals is insignificant. Had a ham.

In addition, ozone was used as a disinfectant in addition to the chlorine disinfectant, but ozone has been proved to be harmful to the human body and the environment by generating a strong and adverse smell and potentially carcinogenic substances such as bromate.

Therefore, interest in chlorine dioxide has been increased to replace disinfectants having the above problems. Chlorine dioxide (ClO ₂₎ is cooled by a green-yellow gas with a characteristic odor of the liquid changing into yellow-red unstable chemically, ClO ₂ ^- appears to change as a strong oxidizing power is Antiseptic ^-, ClO ₃ ^-, Cl. In addition, due to environmentally friendly properties that are easily decomposed by light, it has been spotlighted as an alternative to chlorine disinfectants.

In addition, according to the Korean Ministry of Environment Notice (No. 1999-173), chlorine dioxide can be used as a disinfectant disinfectant when used under 1 ppm in accordance with the Drinking Water Management Act, and recently announced in the Ministry of Food and Drug Safety (No. 2007-145). According to the chlorine dioxide production device and the chlorine dioxide water produced by electrolysis can be used as a disinfectant for food, vegetables, fruits, etc. when used below 30ppm.

However, although chlorine dioxide has many advantages as the disinfectant as described above, it is not easy to prepare in a gaseous state, and the generated chlorine dioxide has a problem that it is not easy to store due to severe change over time.

According to the present invention, a chlorine dioxide gas is generated by reacting a raw material, a first inlet through which the raw material is injected, a second inlet through which an inert gas is injected in a reverse direction of its own weight, and an exhaust port through which the generated chlorine dioxide gas is discharged. And the reaction tank is formed; A first raw material supply unit connected to the first inlet to supply chlorite; A second raw material supply unit connected to the first inlet for supplying sulfuric acid; A solenoid valve positioned between the first and second raw material supply units and the first inlet to control a raw material supply amount; A pressure reducer connected to the exhaust port to reduce the pressure inside the reactor; A filter provided at the second inlet to pass bubbles through the inert gas to form bubbles; Provided is a chlorine dioxide gas production apparatus including a gas supply unit connected to the second inlet for supplying an inert gas in a reverse direction of its own weight.

In addition, the raw material supplied by the first and second raw material supply unit to the pre-reaction, and is located between the first and second raw material supply unit and the reaction tank further comprises an auxiliary reaction tank for moving the pre-reacted raw material to the reaction tank. can do.

The gas supply unit may include a gas supply tank formed to a size covering the second inlet to prevent the raw material contained in the reaction tank from being discharged to the outside; It may include a gas supply device connected to the gas supply tank.

In addition, the chlorite supplied by the first raw material supply is sodium chlorite, preferably 20 to 30% solution of sodium chlorite, the sulfuric acid supplied by the second raw material supply is a sulfuric acid 25 to 35% solution Preferably, the 20 to 30% solution of sodium chlorite and 25 to 35% solution of sulfuric acid are preferably supplied in a 1: 1 volume ratio.

In addition, the inert gas is at least one of inert nitrogen gas, carbon dioxide gas and air.

In addition, the said pressure reducer is an aspirator or a venturi tube.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

1 is a schematic diagram showing the structure of an apparatus for producing chlorine dioxide gas according to an embodiment of the present invention.

As shown in FIG. 1, the apparatus for producing chlorine dioxide gas according to the present invention includes a reactor 100, a first raw material supplier 300, a second raw material supplier 400, a solenoid valve 310, 410, and a pressure reducer 200. ), The filter 120 and the gas supply unit 500.

The reactor 100 is a raw material reacts to produce chlorine dioxide gas, the first inlet 101 is injected with the raw material, the second inlet 103 is injected in the reverse direction of its own weight (self-weight), And an exhaust port 102 through which the generated chlorine dioxide gas is discharged.

The first raw material supply unit 300 supplies chlorite (Salt of Chlorite, MClO ₂ ) as a raw material used for the production of chlorine dioxide to the reaction tank, and is connected to or connected to the first inlet 101 of the reaction tank. Can be connected by hose.

The second raw material supply unit 400 supplies sulfuric acid (Sulfuric acid, H ₂ SO ₄ ) as a raw material used for the production of chlorine dioxide to the reaction tank, the connection pipe or connection to the first inlet 101 of the reactor Can be connected by hose.

In the present invention, chlorine dioxide gas is prepared using chlorite, preferably sodium chlorite (NaClO ₂ ) and sulfuric acid, and the reaction schemes of the raw materials are as follows.

[Formula 1]

5NaClO ₂ + 2H ₂ SO ₄ → 4ClO ₂ + 2Na ₂ SO ₄ + NaCl + 2H ₂ O

Meanwhile, chlorine dioxide may be prepared using chlorite and hydrochloric acid (HCl), which react with the following Chemical Formula 2.

[Formula 2]

5NaClO ₂ + 4HCl → 4ClO ₂ + 5NaCl + 2H ₂ O

In the apparatus for producing chlorine dioxide gas according to the present invention, the pressure inside the reactor is reduced by using a pressure reducer 200 connected to the exhaust port 102 so as to inhale the chlorine dioxide gas as a product to be discharged through the exhaust port 102. . When prepared using sulfuric acid, the product is not vaporized after the reaction is not discharged to the exhaust port 102 with chlorine dioxide to obtain pure chlorine dioxide, but when prepared using hydrochloric acid, hydrochloric acid (HCL) is also vaporized together It is difficult to obtain pure chlorine dioxide gas because it is discharged to the exhaust port 102 together with chlorine dioxide. Therefore, it is not appropriate to use chlorine dioxide produced by using hydrochloric acid to disinfect food.

The solenoid valves 310 and 410 are positioned between the first raw material supplier 300 and the first inlet 101 and between the second raw material supplier 400 and the first inlet 101, respectively. The amount of raw material supplied from the raw material supplier 300 and the second raw material supplier 400 may be controlled.

In addition, the present invention further comprises a control unit (not shown) for controlling the opening and closing times of the solenoid valves 310 and 410 to control the amount of raw material supplied from the first raw material supply unit 300 and the second raw material supply unit 400. It may include.

A solenoid valve is a combination of two basic components that make up a valve body that includes a solenoid (electromagnet) with a magnetic core and one or more orifices. The flow of fluid through the orifice is controlled by closing or opening by the movement of the core when passing through the solenoid or when there is no current. In direct acting valves, when the solenoid is energized, the core directly opens the orifice of the normally closed valve, or closes the orifice of the normally open valve. These valves operate normally between the highest rated pressures when the pressure is zero. These solenoid valves can be adjusted to 5 to 10 milliseconds for small linear valves, and 20 to 40 milliseconds for large linear valves, to provide an apparatus for producing chlorine dioxide gas according to the present invention, which requires accurate and trace feed of raw materials. proper.

Accordingly, the solenoid valves 310 and 410 of the present invention preferably use a type of opening an orifice of a valve in which the core is normally closed when electricity is applied. The opening time is from 0.01 to 10 seconds, and the closing time is You can adjust between 0.01 and 70 seconds. As a result, the raw materials supplied from the first raw material supplier 300 and the second raw material supplier 400 equipped with the solenoid valves 310 and 410 may be controlled to be supplied in a small amount such as 0.01 ml to 0.5 ml.

In addition, the pressure reducer 200 of the present invention is connected to the exhaust port 102 formed in the reactor 100 to lower the pressure inside the reactor (100). This lowered pressure not only causes the chlorine dioxide gas, which is a reaction product of the raw materials supplied to the reactor 100, to evaporate well, but also serves to discharge the chlorine dioxide gas evaporated to the exhaust port 102.

The pressure reducer 200 may include an aspirator or a ventry tube.

The aspirator, also called an ductor-jet pump or a filter pump, is a device that creates a vacuum by using a ventry effect. As the fluid flows through the aspirator and the tube narrows, the velocity of the fluid increases, and its pressure decreases due to the ventry effect, and a vacuum is generated at this point.

The ventry tube can also create a vacuum state by the ventry effect.

Therefore, the aspirator or ventri tube serves to reduce the pressure inside the reaction tank by sucking the air inside the reaction tank 100 of the present invention, and to release the chlorine dioxide gas, which is a reaction product, with the air inside the reaction tank. will be.

The internal pressure of the reactor controlled by such a pressure reducer may be 200 to 400 mmHg, preferably 210 to 240 mmHg. As mentioned above, the decompressor lowers the pressure inside the reactor so that the generated chlorine dioxide gas evaporates well. If the pressure inside the reactor is greater than 400 mmHg, the chlorine dioxide gas may not evaporate well, which may cause an explosion. .

According to one embodiment of the present invention, the aspirator or ventry pipe may be connected to the water pipe. Accordingly, the chlorine dioxide gas sucked by the aspirator or the ventri pipe may be sucked into the connected water pipe to generate chlorine dioxide water. The concentration of chlorine dioxide in the generated chlorine dioxide water is 30 ppm or less, and can be used as a disinfectant for vegetables or fruits by the Notice of Food and Drug Administration.

According to an embodiment of the present invention, a solenoid valve may be mounted between the exhaust port 102 and the pressure reducer 200. This may prevent the chlorine dioxide gas, which is a reaction product, from flowing out, thereby preventing the smell of chlorine dioxide.

According to one embodiment of the invention, the pressure reducer 200 may further include a switch (not shown) for controlling the pressure reducer.

According to an embodiment of the present invention, a pressure sensing unit (not shown) provided in the exhaust port 102 of the reactor may sense the pressure inside the reactor.

Therefore, the pressure reducer switch and the pressure sensing unit may be controlled by a controller (not shown) for controlling the solenoid valve. The controller is an electronic control device with a built-in microprocessor. The controller may be mounted on a printed circuit board (PCB) and control whether the components are opened or closed according to respective conditions.

In addition, the filter 120 of the present invention is provided in the second inlet 103 formed in the reaction tank 100 to pass the inert gas to form a bubble.

According to an embodiment of the present invention, the filter 120 may include all kinds of filters capable of forming fine bubbles (gas bubbles) as porous filters. Preferably, it may include a porous fine ceramic filter, more preferably a porous porcelain filter. Preferably the pore size of the filter may be formed from 10 to 100 μm. More preferably, it may be formed in 10 to 40 μm. If the pore size of the filter is larger than 100 μm, the size of gas droplets that may be generated through the inert gas through the filter becomes very large, and thus, the reaction yield may not be reduced because the reaction of the raw materials contained in the reactor may not proceed smoothly.

The inert gas supplied by the gas supply unit 500 to be described later is injected into the reactor 100 through the filter 120 provided in the second inlet 103. At this time, the inert gas may be a fine gas droplet while passing through the filter 120 to agitate the raw material contained in the reaction tank 100 to facilitate the chemical reaction to increase the reaction yield.

In addition, the gas supply unit 500 may be connected to the second inlet 103 formed in the reaction tank 100 to supply an inert gas in a reverse direction of its own weight. The gas supply unit 500 is provided with a size that can cover the second inlet 103, the gas supply tank 510 to prevent the raw material contained in the reaction tank is discharged to the outside; It may include a gas supply device 520 connected to the gas supply tank.

As mentioned above, the second inlet 103 is provided with a filter 120, there may be a risk that the raw material contained in the reaction tank is discharged. Therefore, the gas supply tank 510 is formed to have a size that can cover the second inlet 103 to prevent the discharge of the raw material contained in the reactor. Therefore, the inert gas supplied from the gas supply device 520 first reaches the gas supply tank 510 and passes through the filter 120 provided in the second inlet 103.

The inert gas supplied by the gas supply unit 500 may include inert nitrogen gas, carbon dioxide gas or air. The inert gas may be supplied in an amount of 100 ml / min to 1000 ml / min, and an amount of 200 ml / min to 600 ml / min is preferred.

As mentioned above, the inert gas is supplied through the second inlet 103 of the reactor in the opposite direction to its own weight, and becomes a bubble (fine gas droplet) while passing through the filter to agitate the raw material in the reactor to a high concentration. Chlorine dioxide can be easily extracted from the mixed reaction liquid and side reaction liquid of the raw material as a gas, and the chlorine dioxide gas can be diluted to suppress the explosion.

The gas supply unit 500 may be controlled using a gas flow meter (not shown).

In addition, the apparatus for producing chlorine dioxide gas of the present invention allows the raw material supplied by the first raw material supplier 300 and the second raw material supplier 400 to be pre-reacted, and the first raw material supplier 300 and the second The auxiliary reaction tank 110 may be further disposed between the raw material supply unit 400 and the reaction tank 100 to move the pre-reacted raw material to the reaction tank.

The auxiliary reaction tank 110 only needs to be located between the first raw material supply part 300 and the second raw material supply part 400 and the reaction tank, and the auxiliary reaction tank 110 is external to the reaction tank 100 or the reaction tank. It can be located inside of.

When the auxiliary reaction tank 110 is located outside the reaction tank, the auxiliary reaction tank has a raw material inlet (not shown) connected to the first raw material supply part 300 and the second raw material supply part 400 and preliminarily reacted with the raw material. It may include a discharge port for discharging to the reaction tank, the outlet of the auxiliary reaction tank may be connected to the inlet 101 of the reaction tank (100).

When the auxiliary reactor 110 is located inside the reactor, the auxiliary reactor is formed to have a size to cover the size of the first inlet 101 of the reactor 100 and is connected to the first inlet. Raw materials supplied from the first and second raw material supply units are directly supplied to the auxiliary reaction tank 110 through the first inlet, and the pre-reacted raw materials are discharged to the reaction tank 100 through the outlet 111 formed in the auxiliary reaction tank. Can be.

The first and second raw material supply unit and the auxiliary reaction tank may be connected by a connection pipe or a connection hose, the connection pipe or connection hose may be deeply connected to the lower portion of the inside of the auxiliary reaction tank.

The outlet of the auxiliary reactor may be formed on the side or the bottom of the auxiliary reactor, preferably formed on the side, the auxiliary reactor may include one or more outlet. Therefore, when the raw material supplied by the first and second raw material supply units starts the preliminary reaction in the auxiliary reaction tank, and the amount of the supplied raw material increases, the level of the raw material is increased to open the discharge port formed on the side of the auxiliary reaction tank. Through the reactor.

Therefore, chlorite supplied by the first raw material supplier 300 and sulfuric acid supplied by the second raw material supplier 400 are primarily supplied to the auxiliary reactor 110 to perform a preliminary reaction. Thereafter, the pre-reacted raw material may be discharged to the reaction tank 100 through the outlet of the auxiliary reaction tank to proceed with the chemical reaction of the raw materials.

According to one embodiment of the invention, the chlorite supplied by the first raw material supply unit 300 is sodium chlorite, more preferably 20 to 30% solution of sodium chlorite.

According to one embodiment of the present invention, the sulfuric acid supplied by the second raw material supply unit 400 is preferably 25 to 35% sulfuric acid solution.

According to one embodiment of the invention, the 20 to 30% solution of sodium chlorite supplied by the first raw material supply unit 300 and the 25 to 35% sulfuric acid solution supplied by the second raw material supply unit 400 is 1 It can be supplied in a volume ratio of 1: 1.

In addition, according to an embodiment of the present invention, after generating chlorine dioxide in the reaction tank 100 may further include a discharge port 600 for discharging the solution (waste solution) is complete.

It looks at the process of producing a chlorine dioxide gas using the apparatus for producing a chlorine dioxide gas of the present invention.

Preparing chlorite and sulfuric acid in the first raw material supply unit 300 and the second raw material supply unit 400 of the present invention, respectively, and if the pressure inside the reaction vessel sensed by the pressure sensing unit is not reduced, the control unit (not shown) Controls the pressure reducer 200 to operate the pressure reducer connected to the exhaust port 102 of the reaction tank 100, and sucks the air in the reaction tank and discharges the air through the exhaust port so that the internal pressure of the reaction tank 100 is predetermined. Allow to decrease in size.

When the internal pressure of the reactor 100 is reduced, the pressure of the first raw material supply unit 300 and the second raw material supply unit 400 is lowered. In this case, when the solenoid valves 310 and 410 are opened by the control unit, the raw material moves from the raw material supply unit toward the reaction tank by the pressure difference between the reaction tank 100 and the raw material supply units 300 and 400, and the reaction tank 100. The first reaction port 110 is first accommodated in the auxiliary reaction tank 110 is provided to perform a preliminary reaction, and the raw material is moved to the reaction tank 100 through the outlet 111 of the auxiliary reaction tank 110.

At this time, at the same time as the solenoid valves 310 and 410 are opened or immediately after, the inert gas is supplied from the gas supply device 520 by the control of a gas flow meter (not shown), and the supplied inert gas is supplied to the gas. It passes through the filter 120 provided in the second inlet 103 of the reactor 100 through the tank 510 and is supplied into the reactor in the opposite direction of its own weight. By the inert gas, the supplied raw material is accommodated in the reaction tank and accumulated in the lower part of the reaction tank. At this time, a bubble (fine gas droplet) formed while the inert gas supplied in the reverse direction of its own weight passes through the filter is the reaction solution. Stir to allow the chemical reaction to occur smoothly.

When chlorine dioxide gas is generated by the chemical reaction of the supplied raw material, when the chlorine dioxide gas is evaporated from the reaction solution by the bubble of the inert gas and the action of the pressure reducer, the reactor 100 by the pressure reducer 200 It is discharged together with the air inside the reaction tank through the exhaust port 102 of the, is supplied directly to the direct water through a hose connected to the water pipe is mixed with water to produce chlorine dioxide water.

At this time, since the concentration of the chlorine dioxide water should be adjusted as necessary, in order to control the amount of chlorine dioxide generated, the supply amount of the raw materials of the first raw material supply unit 300 and the second raw material supply unit 400 is adjusted. The solenoid valves 310 and 410 to be controlled are controlled to be opened and closed at regular intervals by the controller. Therefore, since the solenoid valve can control the amount of raw material supplied to a small amount, it has an effect of adjusting the concentration of chlorine dioxide water.

Hereinafter, the Example which generated the chlorine dioxide gas using the manufacturing apparatus of the chlorine dioxide gas of this invention is demonstrated.

compare Example  1-1.

500 ml of sodium chlorite 8.38% solution was prepared in the first feeder, and 500 ml of 5.45% sulfuric acid solution was prepared in the second feeder. Open the solenoid valve by controlling the control unit of the solenoid valve to add 0.83 ml / min of sodium chlorite 8.38% solution from the first raw material supply, and 0.83 ml / min sulfuric acid 5.45% solution from the second raw material supply to the auxiliary reactor. A preliminary reaction was made and then introduced into the reactor. When the raw material is input by the control of the solenoid valve, the pressure reducer and the gas supply unit are operated at the same time.

At this time, the amount of chlorine dioxide produced 10 minutes after the start of the reaction was 8.5g / L, the reaction yield was 28.33%, the amount of chlorine dioxide produced after 40 minutes of the reaction was 9.8g / L, the reaction yield was 32.83%.

compare Example  1-2.

While proceeding in the same manner as in Comparative Example 1-1, 500 ml of a sodium chlorite 11.2% solution was prepared in the first raw material supply part and 500 ml of a 7.27% sulfuric acid solution was prepared in the second raw material supply part, and sodium chlorite 11.2 was obtained through the solenoid valve. 0.83ml / min% solution, 0.83ml / min sulfuric acid 7.27% solution from the second feeder was added to the auxiliary reactor to be a pre-reaction and then to the reactor.

At this time, the amount of chlorine dioxide produced 10 minutes after the start of the reaction was 7.9 g / L, the reaction yield was 19.9%, the amount of chlorine dioxide produced after 40 minutes of the reaction was 20.7 g / L, the reaction yield was 51.90%.

compare Example  1-3.

While proceeding in the same manner as in Comparative Example 1-1, 500 ml of a 16.7% solution of sodium chlorite was prepared in the first raw material supply portion, and 500 ml of a 10.9% sulfuric acid solution was prepared in the second raw material supply portion. 0.83ml / min% solution, 0.83ml / min sulfuric acid 10.9% solution from the second raw material feed to the auxiliary reactor to the preliminary reaction to be added to the reactor.

At this time, the amount of chlorine dioxide produced 10 minutes after the start of the reaction was 16.4g / ℓ, the reaction yield was 27.3%, the amount of chlorine dioxide was 32.3g / ℓ after the start of the reaction 40 minutes, the reaction yield was 53.96%.

Comparative Example 2 .

In the same manner as in Comparative Example 1-1, 500 ml of sodium chlorite 25% solution was prepared in the first raw material supply part, and 500 ml of 30% sulfuric acid solution was prepared in the second raw material supply part, and a sodium chlorite 25% solution was obtained through the solenoid valve. To 0.83ml / min, 0.83ml / min 30% sulfuric acid solution from the second raw material supply to the reaction tank instead of the auxiliary reactor.

At this time, the amount of chlorine dioxide produced 10 minutes after the start of the reaction was 24.5g / ℓ, the reaction yield was 27.2%, the amount of chlorine dioxide produced after 40 minutes of the reaction was 55.8g / ℓ, the reaction yield was 62%. Therefore, in the absence of an auxiliary reactor, the concentration of chlorite and sulfuric acid is constant at the beginning of the reaction to obtain a good yield, but the reaction rate is naturally slowed down by diluting the concentration of chlorite and sulfuric acid introduced as the reaction solution increases in the reaction tank. Yield will fall.

Example  One.

While proceeding in the same manner as in Comparative Example 1-1, 500 ml of sodium chlorite 25% solution was prepared in the first raw material supply part and 500 ml of 30% sulfuric acid solution was prepared in the second raw material supply part and 25% sodium chlorite was passed through the solenoid valve. 0.83ml / min of the solution, 0.83ml / min of a 30% sulfuric acid solution from the second feeder was added to the auxiliary reactor to perform a preliminary reaction and then to the reactor.

At this time, the amount of chlorine dioxide produced 10 minutes after the start of the reaction was 73.1 g / ℓ, the reaction yield was 81.2%, the amount of chlorine dioxide produced after 40 minutes of the reaction was 82.8 g / ℓ, the reaction yield was 91.7%.

Accordingly, the amount of chlorine dioxide produced using a 25% solution of sodium chlorite and a 30% solution of sulfuric acid using the apparatus for preparing chlorine dioxide gas of the present invention is 82.8 g / l, Comparative Examples 1-1 to 1-3 The yield was the highest as compared with the yield of 81.2% after 10 minutes and the highest after 9 minutes with 91.7%. In addition, the sodium chlorite solution and the sulfuric acid solution was supplied in a volume ratio of 1: 1, showing the highest chlorine dioxide generation rate.

Example  2.

In the chlorine dioxide gas production apparatus of the present invention, a pressure reducer was connected to the water pipe using a connection hose, and the chlorine dioxide gas generated in Example 1 was directly supplied to the water pipe to dissolve to produce chlorine dioxide water.

As a result of checking the pH of the chlorine dioxide water, it showed neutrality at pH 6.8 to 7.0. In addition, the chlorine dioxide concentration of the chlorine dioxide water was maintained at 25ppm to obtain 10 to 12 liters of chlorine dioxide water per minute.

Therefore, the chlorine dioxide produced by the chlorine dioxide production apparatus of the present invention has a high pH and high reactivity, and has excellent sterilizing power, environmentally friendly and harmless to the human body when used in food hygiene.

In addition, unlike the chlorine-based disinfectant which produces disinfection byproducts because the chlorine dioxide gas produced by the manufacturing apparatus of the present invention is pure, it is very useful in the field of food hygiene because it does not generate disinfection by-products after sterilization and disinfection.

Although some embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that modifications may be made to the embodiment without departing from the spirit or spirit of the invention. . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

1 is a schematic diagram showing the structure of an apparatus for producing chlorine dioxide according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: reactor 101: first inlet

102: exhaust port 103: second inlet

110: auxiliary reactor 120: filter

200: pressure reducer 300: first raw material supply unit

400: second raw material supply unit 310, 410: solenoid valve

500: gas supply unit 600: outlet

Claims (9)

In the manufacturing apparatus of the chlorine dioxide gas, A reaction tank is formed in which a raw material reacts to generate chlorine dioxide gas, a first inlet through which the raw material is injected, a second inlet through which inert gas is injected in a reverse direction of its own weight, and an exhaust port through which the generated chlorine dioxide gas is discharged. Wow; A first raw material supply unit connected to the first inlet to supply chlorite; A second raw material supply unit connected to the first inlet for supplying sulfuric acid; A solenoid valve positioned between the first and second raw material supply units and the first inlet to control a raw material supply amount; A pressure reducer connected to the exhaust port to reduce the pressure inside the reactor; A filter provided at the second inlet to pass bubbles through the inert gas to form bubbles; And a gas supply unit connected to the second inlet for supplying an inert gas in a reverse direction of its own weight. The method of claim 1, Dioxide reacting the raw material supplied by the first and second raw material supply unit preliminary reaction, and further comprising an auxiliary reaction tank located between the first and second raw material supply unit and the reaction tank to move the pre-reacted raw material to the reaction tank. Chlorine gas production apparatus. The method of claim 1, The gas supply unit is formed to have a size covering the second inlet to prevent the raw material contained in the reaction tank from being discharged to the outside; Chlorine dioxide gas production apparatus comprising a gas supply device connected to the gas supply tank. The method of claim 1, Chlorine dioxide production apparatus is chlorite is supplied by the first raw material supply unit is sodium chlorite. The method of claim 4, wherein The sodium chlorite is a chlorine dioxide gas production apparatus that is a 20 to 30% solution of sodium chlorite. The method of claim 1, The sulfuric acid supplied by the second raw material supply unit is a chlorine dioxide gas manufacturing apparatus which is a 25 to 35% solution of sulfuric acid. The method according to claim 5 or 6, The 20 to 30% solution of sodium chlorite and 25 to 35% solution of sulfuric acid is supplied in a volume ratio of 1: 1 is the apparatus for producing chlorine dioxide gas. The method of claim 1, The inert gas is at least any one of inert nitrogen gas, carbon dioxide gas and air chlorine dioxide gas production apparatus. The method of claim 1, The decompressor is a device for producing a chlorine dioxide gas which is an aspirator or a ventry tube.

Images