KR101959221B1 - A chloride dioxide generator capable of controlling discharge of reaction liquid - Google Patents

Abstract

The present invention relates to a chlorine dioxide generating apparatus capable of controlling the discharge of a reaction liquid. In the chlorine dioxide generating apparatus comprising a reaction tank in which sodium hypochlorite flowing through a sodium chlorite supply pipe and an acid introduced through an acid feed pipe are reacted to produce the reaction liquid therein, the chlorine dioxide generating apparatus comprises: a reaction liquid discharge pipe penetrating from the outside to the inside of the reaction tank; a discharge pump located on the reaction liquid discharge pipe; and a water level sensor for measuring the level of the reaction liquid located inside the reaction tank, wherein, when a water level sensed by the water level sensor corresponds to a water level of a certain height, the discharge pump is operated so that the reaction liquid located in the reaction tank flows into the reaction liquid discharge pipe to be discharged.

Description

[0001] The present invention relates to a chlorine dioxide generator capable of controlling the discharge of a reaction liquid,

The present invention relates to a chlorine dioxide generating apparatus capable of controlling the discharge of a reaction liquid, in which, in a reaction tank in which sodium hypochlorite and an acid are supplied and reacted to produce a reaction liquid and chlorine dioxide, In order to prevent various risks that may occur due to overflow and various risks that may occur due to sodium hypochlorite and acid reflux, when the level of the reaction liquid becomes a certain level or more, it is discharged into the reaction liquid discharge pipe, The present invention relates to a chlorine dioxide generator capable of being controlled so that a reaction liquid can be discharged while allowing a certain amount of a reaction liquid to be always maintained in a lower portion of a reaction tank in order to prevent abrupt reaction of sodium and acid.

Conventionally, chlorine-based disinfectants such as sodium hypochlorite have been widely used as sanitizing disinfectants. However, the chlorine disinfectant produced toxic by - products (carcinogens such as THMs, HAAs and HANs) and harmed the human body.

In addition, the chlorine-based disinfectant rapidly decreases the bactericidal effect when the pH is increased, and reacts with the organic compound at the time of disinfection, thereby causing the substitution reaction and the addition reaction in addition to the oxidation reaction.

On the other hand, after disinfection with a chlorine-based disinfectant, a phenomenon occurs in which the bacteria reproduce again, and inactivating the protist organisms and the removal of heavy metals are insignificant. In a small foodservice for foodstuffs and the like, I had a cage.

In addition, although ozone was used as a disinfectant in addition to chlorine-based disinfectants, ozone was strong and proved harmful to humans and the environment such as potentially harmful substances such as odor and bromate were produced.

Accordingly, there has been a growing interest in chlorine dioxide to replace disinfectants having the above-mentioned problems. Chlorine dioxide (ClO ₂ ) is a greenish yellow gas with a unique odor. When cooled, it turns into a yellowish red liquid and is chemically unstable. As it changes into ClO ₂ , ClO ₃ , Cl, strong oxidizing power appears as a sterilizing effect.

In addition, it has been attracting attention as a substitute for chlorine-based disinfectants because of its environment-friendly properties, which are easily decomposed by light.

According to the notification of the Ministry of Environment of Korea (No. 1999-173), chlorine dioxide has been reported to be used as a disinfectant when it is used below 1ppm according to the water management law. Recently, the Korea Food & Drug Administration (2007-145) According to the chlorine dioxide production equipment and electrolyzed chlorine dioxide water can be used as a disinfectant for food, such as vegetables and fruits, when it is used below 30ppm.

Two methods of generating chlorine dioxide are discussed.

First, chlorine reacts with sodium chlorite to generate chlorine dioxide. The reaction formula is as follows.

Second, the acid reacts with sodium chlorite to generate chlorine dioxide. The reaction formula is as follows.

The first prior art Korean Patent Registration No. 10-1162535 will be described.

Korean Patent Registration No. 10-1162535 discloses that sodium hypochlorite and acid are firstly reacted in an auxiliary reaction tank so that the overflowed mixture in the auxiliary reaction tank falls into the main reaction tank and then the inert gas is supplied to the lower surface of the reaction tank, To a chlorine dioxide generating device for inducing a reaction.

However, in the above-mentioned first prior art, there is a problem that the above-mentioned first conventional technique overflows in a state of being not sufficiently reacted in the auxiliary reaction tank and falls into the reaction tank. Further, as the inert gas is supplied to the lower surface of the reaction tank, There is a problem in that agitation does not actively occur, and thus the amount of chlorine dioxide to be produced is significantly lowered.

A second prior art Korean Patent Registration No. 10-1092818 will be described.

Korean Patent Registration No. 10-1092818 discloses a method of reacting an aqueous solution of sodium chlorite with hydrochloric acid to generate chlorine dioxide. However, in order to solve the problem of lowering the purity of chlorine dioxide, the unreacted sodium chlorite aqueous solution is passed through a cation exchange resin, And a chlorine dioxide generating device for generating chlorine dioxide.

However, the second prior art relates to a device for generating chlorine dioxide using unreacted sodium chlorite, but does not disclose various conditions such that the reaction can sufficiently take place in the reaction tank.

A third prior art Korean Patent Registration No. 10-1824731 will be described in order to solve the problems of the first prior art and the second prior art.

The third prior art relates to a chlorine dioxide water generating apparatus for generating chlorine dioxide water by using an aspirator in the chlorine dioxide produced through the reaction of an aqueous sodium hypochlorite solution and an aqueous acid solution, After the aqueous solution was firstly reacted in the reaction tube, the reaction solution was stirred again so that sufficient reaction was caused by air bubbles generated in the bubble cap in the reaction tank. Then, chlorine dioxide, which was brought to the upper part of the reaction tank together with air bubbles, was sucked through the aspirator Thereby generating chlorine dioxide water.

However, the present invention does not disclose any problem for overcoming the reaction liquid generated due to the reaction of sodium hypochlorite with acid and overcoming the reaction liquid generated in the reaction tank, or for the risk of corrosion of the housing or rapid reaction with other materials.

(Patent Document 1) KR10-1162535 B

(Patent Document 2) KR10-1092818 B

(Patent Document 3) KR10-1824731 B

In order to solve the problem of the prior art described above, when the reaction liquid placed in the reaction tank reaches a certain level or more, the reaction liquid is discharged to the outside of the reaction tank. In order to minimize the abrupt reaction of sodium hypochlorite and acid introduced into the reaction tank, And the other reaction liquid is discharged to the outside in a state in which a predetermined amount of the reaction liquid is maintained in the chlorine dioxide generating device.

Further, it is an object of the present invention to provide an apparatus for generating chlorine dioxide capable of easily controlling the discharge of chlorine dioxide together with discharge control of a reaction liquid.

In order to solve the above-mentioned problems, the chlorine dioxide generator according to the present invention comprises a reaction liquid produced by reacting sodium hypochlorite introduced through a sodium chlorite feed pipe 220 and an acid introduced through an acid feed pipe 320, A chlorine dioxide generator (100) comprising a reaction tank (100) in which chlorine is located, comprising: a reaction solution discharge pipe (190) penetrating from the outside to the inside of the reaction tank (100); A discharge pump 192 located on the reaction liquid discharge pipe 190; And a water level sensor (151, 152) for measuring the level of the reaction liquid located inside the reaction tank (100). When the water level sensed by the water level sensor (151, 152) The pump 192 is operated so that the reaction liquid located inside the reaction tank 100 flows into the reaction liquid discharge pipe 190 and is discharged.

The level sensors 151 and 152 may include a first level sensor 151 and a second level sensor 151 located below the first level sensor 151 at a predetermined distance from the first level sensor 151 152).

The height of one end of the reaction liquid discharge pipe 190 located inside the reaction tank 100 is located at a height between the first water level sensor 151 and the second water level sensor 152.

Preferably, the height of one end of the reaction liquid discharge pipe 190 is equal to the height of the second water level sensor 152.

Preferably, the air inlet pipe 180 communicated with the reaction tank 100; And an opening and closing valve 182 for opening and closing the air inlet pipe 180. The flow of chlorine dioxide to the reaction liquid outlet pipe 190 is controlled by opening and closing the opening and closing valve 182.

The chlorine dioxide generating device according to the present invention can easily discharge the reaction liquid to the outside of the reaction tank automatically when the level of the reaction solution placed in the reaction tank becomes a certain level or more, It is possible to minimize the risk of reaction between the reaction solution and other substances that may occur due to the full or overflow of the reaction solution.

Furthermore, in order to minimize the risk of rapid reaction between sodium chlorate and acid, a certain amount of reaction liquid must be maintained in the reaction tank at all times. In order to discharge the other reaction liquid to the outside while maintaining the constant amount of reaction liquid , The risk of rapid reaction between sodium chlorite and acid can be minimized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a chlorine dioxide generating device according to the prior art; FIG.
2 is a view showing an apparatus for generating chlorine dioxide according to the present invention.
3 is a flowchart showing a method of discharging a reaction liquid in the chlorine dioxide generator according to the present invention.

Hereinafter, preferred embodiments of the method according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines and the size of the constituent elements shown in the drawings can be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1. Component Description

A chlorine dioxide generator according to the present invention will be described with reference to FIG.

The apparatus for generating chlorine dioxide according to the present invention includes a reaction tank 100, a sodium chlorite storage unit 200, an acid storage unit 300, and an aspirator 400. The sodium hypochlorite stored in the sodium hypochlorite storage part 200 and the acid stored in the acid storage part 300 flow into the reaction tank 100 to generate chlorine dioxide and a reaction solution, While the generated chlorine dioxide is sucked into the aspirator 400 and mixed with water to generate chlorine dioxide water.

A reaction tube 140, a bubble cap 160, and an air inlet tube 180 are positioned inside the reaction tank 100.

The reaction tube 140 is connected to the sodium chlorosilicate storage part 200 through the sodium chlorosilicate supply pipe 220 and is connected to the acid storage part 300 through the acid supply pipe 320, Respectively. In the present invention, any acid can be used as long as the acid reacts with sodium chlorite to generate chlorine dioxide. It is needless to say that sulfuric acid may be hydrochloric acid as described above.

The upper portion of the reaction tube 140 is preferably a funnel shape. That is, the sodium chlorite supply pipe 220 and the acid supply pipe 320 communicate with the upper part of the funnel-shaped reaction pipe 140.

The sodium chlorite aqueous solution flowing into the sodium chlorite feed pipe 220 and the aqueous acid solution flowing into the acid feed pipe 320 are uniformly injected into the reaction tube 140.

Further, in order to minimize the corrosion of the reaction tube 140 due to the heat generated by the rapid reaction of the sodium chlorite and the acid, the reaction is performed slowly.

The level sensors 151 and 152 for sensing the level of the reaction liquid rising from the inside of the reaction tank 100 according to the reaction between the sodium hypochlorite and the acid are located on the outer surface of the reaction tank 100.

Specifically, the first water level sensor 151 is located on the outer surface of the reaction tank 100, and a second water level sensor 152 (see FIG. 1) is disposed below the first water level sensor 151 at a certain distance from the first water level sensor 151 ).

The first water level sensor 151 senses whether the level of the reaction liquid inside the reaction tank 100 is a constant water level. When the water level reaches a predetermined level, the discharge pump 192, which will be described later, operates so that the reaction liquid located inside the reaction tank 100 flows into the reaction liquid discharge pipe 190 .

The first water level sensor 151 is preferably located at the upper part of the reaction tank 100 on the outer surface of the reaction tank 100 and is preferably disposed at the upper surface of the reaction tank 100. The first water level sensor 151 is a funnel- Is lower than the upper portion of the reaction tube (140). Before the reaction liquid overflows to the upper part of the funnel-shaped reaction tube 140, the first water level sensor 151 senses the level of the reaction liquid, and the discharge pump 192 is operated to discharge the reaction liquid to the outside It is for this reason.

Even in the case of a structure in which sodium hypochlorite and an acid are introduced into the reaction tank 100 and reacted immediately without the reaction tube 140, the reaction liquid produced by the reaction may overflow while overflowing in the reaction tank 100, When the water level is sensed by the first water level sensor 151 in order to minimize the risk of unexpected reaction due to the pressure applied, the discharge pump 192, which will be described later, is operated so that the reaction liquid in the reaction tank 100 flows into the reaction liquid discharge pipe 190 ). ≪ / RTI >

The second water level sensor 152 is located at a lower level than the first water level sensor 151 on the outer surface of the reaction tank 100. Chlorine dioxide is produced by the reaction between sodium chlorite and an acid. If the amount of sodium chlorite and the amount of acid to be reacted are not controlled as described above, rapid reaction may cause reaction heat and the risk that the reaction vessel 100 may be damaged .

In order to minimize the rapid reaction, sodium chlorate and acid are reacted slowly with sodium chlorate as a means of controlling the reaction between sodium chlorate and acid, or sodium chlorate and acid react with each other in a certain amount of reaction liquid containing water, The reaction can be minimized.

Accordingly, it is necessary to maintain a predetermined amount or more of reaction liquid in the reaction tank 100 in order to prevent abrupt reaction of sodium chlorite and acid.

The second water level sensor 152 senses whether the level of the reaction liquid inside the reaction tank 100 is constant. That is, when the second liquid level sensor 152 senses a case where the liquid level of the reaction liquid is equal to or more than a certain level, the operation of the discharge pump 192 is continued and the liquid level of the reaction liquid falls below a predetermined level, 152 does not sense a certain water level, the operation of the discharge pump 192 already in operation is stopped, and furthermore, the on-off valve 182 on the air inflow pipe 180 to be described later is closed.

It is preferable that the second water level sensor 152 is located near the water level at which the minimum amount of the reaction liquid to be maintained, that is, near the reaction liquid level threshold line L, is maintained so that the sodium hypochlorite and the acid do not react abruptly. Considering the size of the reaction tank 100 and the amount of generated chlorine dioxide required, a reaction liquid level limit line L required for the reaction between sodium chlorite and an acid can be determined.

Accordingly, when the liquid level of the reaction liquid is sensed by the first water level sensor 151, the discharge pump 192 is operated to discharge the reaction liquid to the reaction liquid discharge pipe 190 to overflow the reaction liquid, And when the second water level sensor 152 does not sense a certain level of the reaction liquid (when the reaction liquid level falls below the second water level sensor 152), the already operated exhaust pump 192 Is stopped and the discharge of the reaction liquid is stopped so that a certain amount of reaction liquid is maintained in the reaction tank 100.

The air inlet pipe 180 penetrates the inside of the reaction tube 140 and is positioned to the lower end of the reaction tube 140. The air introduced into the lower end of the reaction tube 140 through the air inlet pipe 180 is converted into air bubbles while passing through the bubble cap 160 to be described later and then the air bubbles are raised in the reaction vessel 100, Is agitated vigorously.

On this air inflow pipe 180, an on-off valve 182 is located. The reaction liquid is discharged to the reaction liquid discharge pipe 190 by the operation of the discharge pump 192 and the reaction liquid is discharged to the inside of the reaction tank 100 by the operation of the discharge pump 192. However, The opening / closing valve 182 is closed so that no air is introduced into the reaction tank 100. In this case, as shown in FIG. So as to minimize the discharge of chlorine dioxide generated at one end of the reaction liquid discharge pipe 190, which is located inside the reaction tank 100, to be described later.

That is, to control the inflow of air into the air inflow pipe 180, chlorine dioxide generated inside the reaction tank 100 close to the airtightness is minimized to be introduced into the reaction liquid discharge pipe 190 and discharged.

The on-off valve 182 can be opened when the level of the reaction liquid is higher than one end of the reaction liquid discharge pipe 190. If the one end of the reaction liquid discharge pipe 190 is located at the same height as the second water level sensor 152, the second water level sensor 152 senses the level of the reaction liquid in the state where the on / off valve 182 is already closed The on-off valve 182 can be opened.

The bubble cap 160 is positioned at the lower end of the reaction tube 140. The bubble cap 160 has a plurality of microvoids formed therein, so that the air introduced through the air inlet pipe 180 is converted into air bubbles while passing through the bubble cap 160.

That is, the air introduced into the air inlet pipe 180 located at the lower end of the reaction tube 140 passes through the bubble cap 160 positioned at the lower end of the reaction tube 140, Active stirring of acid and sodium hypochlorite occurs in the reaction groove lower groove 120 to be described later, and furthermore, the air bubbles rise in the reaction tank 100 to cause active stirring again. In addition, the chlorine dioxide gas generated by the reaction of the acid and the sodium chlorite in the reaction tank 100 floats up to the upper portion of the reaction tank 100 together with air bubbles rising in the reaction tank 100.

Even if the chlorine dioxide produced inside the reaction tank 100 is absorbed by the aspirator 400, the pressure inside the reaction tank 100 is kept constant by the air supplied to the air inflow pipe 180, Is continuously discharged to the chlorine dioxide discharge pipe (110). However, when air is not supplied to the air inflow pipe 180 due to the shutoff of the on-off valve 182, the inside of the reaction tank 100, which is close to the airtightness due to the constant pressure maintained inside the reaction tank 100, The chlorine is not discharged to the chlorine dioxide discharge pipe 110.

A groove-shaped reaction tank lower groove 120 is formed on the inner lower surface of the reaction tank 100, and a bubble cap 160 is positioned inside the reaction tank lower groove 120.

In the reaction tube 140, the mixed acid and sodium chlorite are firstly reacted in the reaction tube 140. The air bubbles generated in the bubble cap 160 in the lower groove 120 of the reaction tank 120 during the process of flowing the mixture out of the reaction tube 140 and flowing into the reaction tank 100, And agitated more actively.

Further, the aspect of the mixture circulation in the reaction tank 100 is considered.

Minute bubbles generated through the bubble cap 160 rise in the reaction tank 100 to cause circulation of the mixture and induce an active reaction. However, if the lower surface is flat, there is a problem that the mixture circulation is not properly caused to the lower surface edge.

In consideration of this problem, in the apparatus for generating chlorine dioxide according to the present invention, the lower surface of the reaction tank 100 has a shape in which the height of the lower surface increases from the bottom of the reaction tank to the edge. That is, the lower surface and the side surface inside the reaction tank 100 are connected in a curved shape.

Accordingly, the air bubbles generated in the bottom of the reaction tank 120 may circulate through the mixture of the reaction tank 100 while circulating the mixture, and the circulation to the bottom edge portion may be sufficiently performed.

Sodium chlorite stored in the sodium chlorite storage 200 is supplied to the reaction tube 140 through the sodium chlorite supply tube 220. A first feed regulating valve 240 is located on the sodium chlorite feed tube 220. The amount of sodium chlorate to be supplied to the reaction tube 140 can be finely adjusted.

The acid stored in the acid storage part 300 is supplied to the reaction tube 140 through the acid supply tube 320. Likewise, the second supply regulating valve 340 is located on the acid supply pipe 320 so that the amount of acid is finely adjusted.

A plurality of sodium chlorite sodium level sensors 201, 202 and 203 for sensing the sodium hypochlorite level can be located on the outer surface of the sodium chlorite storage 200 at regular intervals in the vertical direction. In FIG. 2, three sodium chlorite level sensors 201, 202 and 203 are shown as being positioned, but it is understood that the number of the sodium chlorite level sensors 201, 202 and 203 is three or more or three or less.

A plurality of arithmetic sensors 301, 302, and 303 for sensing a mountain water level at predetermined intervals in an up and down direction may be disposed on the outer surface of the acid storage unit 300. In FIG. 2, three arithmetic sensors 301, 302, and 303 are shown as being positioned, but it is understood that the arithmetic sensors may be three or more or three or less.

The amount of sodium chlorate to be supplied to the reaction tank 100 and the amount of the acid to be supplied to the reaction tank 100 need to be supplied at a certain ratio in order to minimize abrupt reaction or unexpected reaction occurrence or to produce a certain concentration of chlorine dioxide. That is, when the amount of sodium chlorate to be supplied to the reaction tank 100 differs from the amount of the acid, an unexpected reaction occurs and a high heat is generated in the reaction tank 100 to pressurize the reaction tank 100 Danger may occur.

The first supply regulating valve 240 and the second supply regulating valve 340 are operated so that they are once reacted at a certain rate. However, when the supply regulating valve 240 and the supply regulating valve 240 are out of a certain ratio due to the minute malfunction thereof, .

In order to solve such a problem, a plurality of sodium chlorite sodium level sensors 201, 202 and 203 are placed on the outer surface of the sodium chlorate storage unit 200 at regular intervals in the vertical direction, 303 and 303 are periodically and periodically or real-time sensed the remaining amount of sodium chlorite and the remaining amount of acid to supply sodium chlorite and an acid to the reaction tank 100 at a constant rate . When the sodium chlorite and the acid are supplied outside the predetermined ratio, the sodium hypochlorite inside the sodium chlorite storage part 200 and the acid water inside the acid storage part 300 will be sensed as being out of a certain ratio, It is possible to stop the supply of sodium hypochlorite and acid to the reaction tank 100 and to find a solution to the problem.

Further, when the sensed values of the sodium chlorite level sensors 201, 202 and 203 and the acid rain sensor 301, 302 and 303 are out of a predetermined ratio, the first supply regulating valve 240 and the second supply regulating valve (not shown) 340 to control the amount of sodium chlorate and the amount of acid to be supplied, and furthermore, to stop the operation of the first supply control valve 240 and the second supply control valve 340 through a control unit (not shown) Thereby stopping the supply of sodium hydrogencarbonate and acid to the reaction tank 100.

A chlorine dioxide discharge pipe 110 communicates with the upper portion of the reaction tank 100. The chlorine dioxide discharge pipe 110 communicates with the aspirator 400. Accordingly, the chlorine dioxide collected at the upper part of the reaction tank 100 is sucked into the aspirator 400 through the chlorine dioxide discharge pipe 110 to generate chlorine dioxide water.

The reaction solution discharge pipe 190 penetrates from the outside to the inside of the reaction tank 100. A discharge pump 192 is disposed on the reaction liquid discharge pipe 190 located outside the reaction tank 100 and the discharge pump 192 is operated in order to discharge the reaction liquid located inside the reaction tank 100 to the outside .

During the operation of the discharge pump 192, the reaction liquid flows to one end of the reaction liquid discharge pipe 190 located inside the reaction tank 100 and is discharged to the outside of the reaction tank 100. The position of one end of the reaction liquid discharge pipe 190 may be located between the first water level sensor 151 and the second water level sensor 152.

It is needless to say that one end of the reaction liquid discharge pipe 190 should be positioned lower than the first water level sensor 151.

As described above, in order to minimize the rapid reaction between sodium chlorite and acid, a certain amount of reaction liquid must be maintained inside the reaction tank 100, so that one end of the reaction liquid discharge pipe 190 is connected to the reaction liquid If the water level is lower than the water level, even the reaction liquid to be maintained in the reaction tank 100 may be discharged to the outside due to a malfunction of the discharge pump 192. Therefore, it is preferable that one end of the reaction liquid discharge pipe 190 is positioned higher than the reaction liquid level to be maintained in the reaction tank 100. The height of the second water level sensor 152 may be equal to the level of the reaction liquid to be maintained in the reaction tank 100.

One end of the reaction liquid discharge pipe 190 may be located at the same level as the height of the reaction liquid to be maintained in the reaction tank 100, that is, the height of the second water level sensor 152. When the reaction liquid is discharged to the outside by the operation of the discharge pump 192 and the water level in the reaction tank 100 is lower than the one end of the reaction liquid discharge pipe 190, the generated chlorine dioxide is discharged to the reaction liquid discharge pipe 190 It is to minimize the possibility. That is, when one end of the reaction liquid discharge pipe 190 is positioned at the same height as the height of the second water level sensor 152, when the reaction liquid level falls below the height of the second water level sensor 152, It is possible to minimize the possibility that the generated chlorine dioxide is discharged to the reaction liquid discharge pipe 190 because the operation of the reaction liquid discharge pipe 190 is stopped.

2. Operation description

The sodium chlorite stored in the sodium chlorite storage 200 is supplied to the upper portion of the funnel-shaped reaction tube 140 through the sodium chlorite supply pipe 220 while the acid stored in the acid storage 300 is supplied to the acid supply pipe 220 to the top of the funnel-shaped reaction tube 140.

The supplied acid and sodium hypochlorite flow into the upper part of the funnel-shaped reaction tube 140 and slowly flow into the reaction tube 140 while being reacted.

The acid and sodium hypochlorite mixture are passed through the inside of the reaction tube 140 and subjected to a primary reaction with sufficient stirring.

The mixture that has passed through the reaction tube 140 flows out to the bottom of the reaction tank 120. At this time, the air discharged from the air inflow pipe 180 passes through the bubble cap 160 to generate air bubbles, And a secondary reaction occurs in the reaction groove lower groove 120.

The mixture in the reaction tank 100 is not only stirred by the rising air bubbles but also circulates to the upper part and the lower part to perform the tertiary reaction.

The generated chlorine dioxide is floated to the upper part of the reaction tank 100 together with the rising air bubbles and discharged to the chlorine dioxide discharge pipe 110 communicating with the upper part of the reaction tank 100 by the suction force of the aspirator 400, Chlorine water is generated.

The reaction liquid discharge control located inside the reaction tank 100 will be described with reference to FIG.

The height of one end of the reaction liquid discharge pipe 190 is the same as the height of the second water level sensor 152. [

S100: reaction liquid and chlorine dioxide are produced in the reaction tank (100)

As the reaction solution is generated, the reaction solution is heated inside the reaction tank 100.

S200: Whether the level of the reaction liquid in the first water level sensor 151 is a predetermined water level or not

The reaction liquid is reacted in the reaction tank 100, and the first level sensor 151 senses whether the level of the reaction liquid has reached a certain level. If the reaction liquid level does not reach a certain level, sodium hypochlorite and an acid are supplied and the reaction in the reaction tank 100 is continued.

S300: When the first water level sensor 151 senses a certain water level, the discharge pump 192 operates

When the first water level sensor 151 senses a certain level of the reaction liquid, that is, when the reaction liquid level reaches the height of the first water level sensor 151, the discharge pump 192 is operated, Flows into the discharge pipe (190) and is discharged to the outside of the reaction tank (100).

S400: While the discharge pump 192 is operating, whether the level of the reaction liquid in the second water level sensor 152 is a certain level or not

The reaction liquid is discharged to the outside by the operation of the discharge pump 192 and the level of the reaction liquid inside the reaction tank 100 is lowered. When the level of the reaction liquid is higher than a certain level, that is, when the level of the reaction liquid is higher than that of the second level sensor 152, the discharge pump 192 is continuously operated to continuously discharge the reaction liquid to the outside.

S500: When the level of the reaction liquid is lower than the predetermined amount of the reaction liquid to be maintained in the reaction tank 100, the operation of the exhaust pump 192 is stopped and the opening / closing valve 182 is closed

When the level of the reaction liquid is higher than that of the second water level sensor 152, the second water level sensor 152 continuously senses that the reaction liquid water level is higher than a certain water level, and when the reaction liquid water level is lower than the height of the second water level sensor 152 The reaction liquid level is not sensed by the second liquid level sensor 152, and the reaction liquid level is recognized as being below a certain level.

As soon as the liquid level of the reaction liquid deviates from the height of the second level sensor 152, the operation of the discharge pump 192 is stopped and the discharge of the reaction liquid is stopped so that a certain amount of the reaction liquid is maintained in the reaction tank 100. Furthermore, the opening / closing valve 182 is closed to prevent air from being supplied into the reaction tank 100, thereby minimizing the possibility that chlorine dioxide flows to the reaction liquid discharge pipe 190.

S600: After the step S500, the reaction liquid is generated by the reaction of sodium chlorite and the acid, and the reaction liquid level rises again as the reaction liquid is added to the reaction tank 100. The second liquid level sensor (152)

When the level of the reaction liquid is lower than a certain level, the operation of the discharge pump 192 is stopped, and the opening / closing valve 182 is closed to minimize the possibility that the produced chlorine dioxide flows to the reaction liquid discharge pipe 190.

S700: When the liquid level of the reaction liquid is sensed at a certain water level, the opening / closing valve 182 is opened

One end of the reaction liquid discharge pipe 190 is positioned at a height of the second water level sensor 152 so that the reaction liquid level is higher than the second liquid level sensor 152 and one end of the reaction liquid discharge pipe 190 is placed in the reaction liquid And the generated chlorine dioxide does not flow into the reaction liquid discharge pipe 190.

Therefore, the opening / closing valve 182 is opened to supply air to the reaction process of sodium hypochlorite and acid.

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It will be appreciated that embodiments are possible. Accordingly, the scope of protection of the present invention should be determined by the claims.

100: Reactor
110: chlorine dioxide discharge pipe
120: bottom of the reactor
140: reaction tube
151: first water level sensor
152: second water level sensor
160: Bubble cap
180: air inlet pipe
182: opening / closing valve
190: reaction liquid discharge pipe
192: Discharge pump
200: sodium hypochlorite storage part
220: Sodium chlorite feed pipe
240: first supply regulating valve
300: acid storage
320: acid supply pipe
340: Second supply control valve
400: Aspirator
L: Reaction liquid level limit line

Claims (5)

The sodium chlorite flowing through the sodium chlorite feed pipe 220 communicating with the sodium chlorite storage portion 200 and the acid generated through the reaction of the acid introduced through the acid feed pipe 320 communicated with the acid storage portion 300 In a chlorine dioxide generating device including a reaction tank (100) in which a liquid and chlorine dioxide are located,
A reaction liquid discharge pipe 190 penetrating from the outside to the inside of the reaction tank 100;
An air inlet pipe (180) penetrating into the reaction tank (100);
A chlorine dioxide discharge pipe 110 communicating with the upper part of the reaction tank 100;
An aspirator 400 communicating with the chlorine dioxide discharge pipe 110;
A discharge pump 192 located on the reaction liquid discharge pipe 190; And
And a water level sensor (151, 152) for measuring the level of the reaction liquid located in the reaction tank (100)
The reaction tank 100 is in a hermetically sealed state and the sodium chlorosilicate supply pipe 220, the acid supply pipe 320, the reaction solution discharge pipe 190, the air inlet pipe 180 and the chlorine dioxide discharge pipe 110, And is in a closed state,
The water level sensors 151 and 152 are positioned below the first water level sensor 151 at a predetermined distance from the first water level sensor 151 and the first water level sensor 151, And a second water level sensor (152) positioned above the bottom surface of the reaction tank (100) at a predetermined distance.
When the level of the reaction liquid is sensed by being positioned at the height of the first level sensor 151, the discharge pump 192 is operated so that the reaction liquid flows into the reaction liquid discharge pipe 190 and is discharged.
When the level of the reaction liquid is lower than the height of the second water level sensor 152, the operation of the discharge pump 192 is stopped and the flow of the reaction liquid to the reaction liquid discharge pipe 190 is blocked ,
The height of one end of the reaction liquid discharge pipe 190 located inside the reaction tank 100 is equal to the height of the second water level sensor 152,
The remaining amount of sodium chlorite according to the level of sodium chlorite sensed by the sodium chlorite level sensors 201, 202 and 203 located on the outer surface of the sodium chlorate storage 200 and the amount of sodium chlorite remaining on the outside surface of the acid storage 300 When the ratio of the remaining amount of the acid to the sensed acid level in the positioned acid water sensors 301, 302, and 303 is out of a predetermined ratio, the first supply control valve 240 positioned on the sodium chlorite supply tube 220 The supply of sodium hypochlorite to the reaction tank 100 through the sodium chlorite feed pipe 220 is stopped and the operation of the second feed control valve 340 located on the acid feed pipe 320 causes the acid Wherein supply of the acid to the reaction tank (100) through the supply pipe (320) is stopped.
The method according to claim 1,
And an opening / closing valve (182) for opening / closing the air inlet pipe (180)
And the flow of chlorine dioxide to the reaction liquid discharge pipe (190) is controlled by opening and closing the opening / closing valve (182).
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