KR102433625B1 - Chemical cleaning type oxidation deodorization and air purification device - Google Patents

Abstract

The present invention relates to a chemical liquid cleaning type electrocatalyst oxidative deodorization and air purifier in which a plurality of electrocatalysts are disposed inside a casing body having an inlet flowing air therethrough on one side and an outlet for purified air on the other side using a liquid chemical cleaning method, and acidic and alkaline liquids are sprayed on an electrocatalyst side in a spray method such that the purification efficiency can be improved while preventing contamination of the electrocatalyst, and energy consumption can be minimized by electrocatalytic oxidation using microcurrent. According to the electrocatalyst oxidative deodorization and air purifier, the sprayed chemical liquid can be drained and reused for each section to reduce maintenance costs, the amount of drug used can be controlled according to the characteristics of odor, and a structure is improved so that an alkali solution can be feedback-controlled for pH control to prevent acidification.

Description

Chemical cleaning method electrocatalyst oxidative deodorization and air purifier

The present invention relates to a chemical cleaning method electrocatalytic oxidation deodorization and air purifier. In particular, using a chemical cleaning method, an inlet for air inflow is provided on one side and an outlet for purified air is provided on the other side. By disposing a plurality of electrocatalysts and spraying an acidic solution and an alkaline solution to the electrocatalyst side in a spray method, it is possible to prevent contamination of the electrocatalyst and improve the purification efficiency, and also to use an electrocatalytic method using a microcurrent Energy consumption can be minimized by oxidation with It relates to an electrocatalyst oxidative deodorization and air purifier with an improved structure to allow feedback control of an alkaline liquid for pH control.

In general, when harmful substances are mixed in clean air or water to the extent that it has a bad effect on humans, animals, plants, and other substances, it is called air pollution or water pollution.

Air pollution refers to the presence of pollutants in the air for some time and harms human health, health, and the lives of animals and plants, adversely affecting our daily life and property. , steam, gas, etc., and can be divided into natural and artificial according to the conditions under which pollutants are generated.

Among the various air pollutants known so far, nitrogen oxides, sulfur oxides, carbon monoxide, hydrocarbon vapors and organic solvent vapors are particularly harmful to the human body.

Conventionally used air purifiers were filled with activated carbon to adsorb and deodorize odorous gas or smoke, but activated carbon had to be used only for a certain period of time, and there was a problem in that it could not sterilize microorganisms harmful to the human body.

As another example, the air was purified through a nonwoven fabric made of glass fiber or synthetic resin fiber, but there was a problem in that it could not sterilize harmful bacteria or remove odors.

As another example, the electrostatic precipitator, which is cleaned by charging dust and then attaching high voltage to the dry electrode plate, also has a problem in that it is difficult to sterilize harmful bacteria or remove odors.

On the other hand, the conventional water purification device mainly filled the inside with activated carbon to purify the polluted water, but the activated carbon was used only for a certain period of time, so it had to be replaced.

As a prior art related to the existing air purifier, Korean Patent Publication No. 10-0442703 "A catalyst mixture for air and water purification and a method for purifying air and water using the catalyst mixture", which the inventor previously applied as an applicant and inventor ( As disclosed in the registration date: 2004.07.22), the catalyst mixture in the catalyst filter part is electrolyzed by the electrode, and various organic substances and ozone are removed from the external polluted air flowing in by the fan to first purify the air; ; decomposing and removing non-decomposed organic matter in the firstly purified air and at the same time collecting various fine dust in the air to secondarily purify the air; purifying the air thirdly by removing harmful gases from the secondarily purified air; a step of removing dust or ozone while the thirdly purified air comes into contact with the water in the tank to purify the air fourthly and then discharging it to the outside; introducing the water polluted in the water tank into the water purification unit by the fourth step of purifying the air; It is composed of a water purification step of purifying the water quality of the contaminated water introduced into the water purification unit and dropping the purified water into the water tank.

As another prior art related to the existing air purifier, as disclosed in Korean Patent Publication No. 10-969428 "Air exhaust device" (registration date: 2010.07.02), an air generator for generating air; a filter connected to the air generator to remove foreign substances contained in the air; an air tank connected to the filter to store air; an air distributor connected to the air tank; a container air pipe disposed to surround the upper outer surface of the container in a state connected to the air distributor and having a plurality of air outlets for discharging air to the upper part; and a hood air pipe disposed at the inner edge of the inlet of the exhaust hood in a state of being connected to the air distributor and having a plurality of air outlets for discharging air upward.

However, the existing air exhaust device simply uses a filter to simply filter and remove harmful substances contained in the air. The disadvantage is that the efficiency is lowered.

Korean Patent Publication No. 10-0442703 "A catalyst mixture for purifying air and water and a method for purifying air and water using this catalyst mixture" (Registration date: July 22, 2004) Korean Patent Publication No. 10-969428 "Air exhaust device" (Registration date: 2010.07.02)

The present invention was created to solve these problems in consideration of the above-mentioned problems, and its purpose is to provide an inlet through which air is introduced on one side by using a chemical cleaning method and an outlet for purified air at the other side of the casing body. By disposing a plurality of electrocatalysts inside and spraying acidic and alkaline solutions to the electrocatalyst side in a spray method, the chemical solution cleaning method electrocatalyst has an improved structure to prevent contamination of the electrocatalyst and improve purification efficiency It is to provide an oxidative deodorization and air purifier.

Another object of the present invention is to minimize energy consumption by oxidizing in an electrocatalytic method using a microcurrent, and to drain the sprayed chemical solution for each section so that it can be reused, thereby reducing maintenance costs, An object of the present invention is to provide an electrocatalyst oxidative deodorization and air purifier with an improved chemical solution cleaning method so that the amount of chemical used can be adjusted according to the nature of the odor.

Another object of the present invention is to provide an electrocatalyst oxidative deodorization and air purifier with an improved structure so as to feedback-control an alkaline liquid for pH adjustment to prevent acidification.

The present invention for achieving the above object is provided with an inlet through which air is introduced at one side and an outlet at the other side, and a casing body having a space therein; A first pretreatment filter disposed inside one side of the space of the casing body and disposed close to the inlet, a first electrocatalyst disposed at a position spaced apart from the first pretreatment filter, and the first pretreatment filter and the first pretreatment filter an acid treatment unit composed of first and second injection units for spraying the acid liquid in the acid tank toward the first electrocatalyst; a second electrocatalyst disposed inside the other side of the space of the casing body and disposed close to the outlet, a second pretreatment filter disposed between the second electrocatalyst and the first electrocatalyst, and a second pretreatment filter; an alkali treatment unit composed of third and fourth injection units for injecting the alkali liquid in the alkali tank toward the second electrocatalyst; a treated water drain pipe connected to the bottom of the casing body and draining the chemical treated water to the outside; first and second sensing sensors disposed inside one side and the other side of the casing body, detecting the concentration of odors in the space, and outputting the sensed information to the control unit; and a control unit that adjusts the injection amount of the third and fourth injection units based on the information applied from the first and second detection sensors, wherein the first and second electrocatalysts convert electrons into home appliances when electric energy is applied at room temperature. It is an electrochemical carbon semiconductor catalyst that is excited from the self-band to the conduction band, and holes are formed in the valence band, and the electrons and holes react with hydrogen and water in the air to generate active oxygen of superoxide anions and hydroxyl radicals, the first, 2 The electrocatalyst is characterized in that it is composed of fixed carbon, magnesium, iodine, and manganese.

It further includes a plurality of drain tanks connected to the treated water drain pipe and storing treated water of the acidic liquid and the alkaline liquid drained from the inside of the casing body, respectively.

It further includes a first pH sensor provided in at least one of the plurality of drain tanks to measure the pH concentration of the alkaline liquid stored in the drain tank and output the measured information to the control unit.

It is connected to the treated water drain pipe, the alkaline liquid treated water drained from the inside of the casing body is stored, and the alkaline liquid treated water stored therein is selectively reused toward the third and fourth injection units by a plurality of operation valves. It will further include a treated water tank connected to the third and fourth injection unit.

A second pH sensor is provided in the treated water tank and measures the pH concentration of the alkaline solution treated water in the treated water tank and outputs the measured information to the control unit.

The first and second electrocatalysts are formed in a bundle structure of nanotubes made of graphene or graphite material.

In one embodiment of the present invention, the first pretreatment filter, the first electrocatalyst, the second pretreatment filter, and the second electrocatalyst are arranged spaced apart from each other in the order of the first pretreatment filter, the first electrocatalyst, and the second electrocatalyst inside the casing body provided with the inlet and the outlet, The first, second, and third pre-treatment filters and the first and second electrocatalysts can be washed by spraying the acidic solution and the alkaline solution through the first, second, third, and fourth spraying units, and the electrochemical oxidation catalyst of the first and second electrocatalysts It has the advantage of improving the deodorization performance by oxidizing and decomposing the odor component target material in the air using the reaction.

In addition, according to the present invention, the injection amount of the chemical can be feedback-controlled according to the change in the odor concentration detected by the first and second detection sensors provided inside one side and the other side of the casing body, and the first pH sensor provided in the fourth drain tank is used to control alkalinity. By feedback-controlling the injection amount of the liquid, it has the advantage of reducing the waste of the chemical liquid.

And the present invention is composed of a multi-stage chemical cleaning method and a complex method of catalytic oxidation, and uses an oxidation and decomposition reaction by an electrocatalyst and radicals, so it has the advantage of excellent deodorization performance for various odorous substances, and automatic catalyst cleaning is performed Therefore, it is easy to maintain the product, and it has an environmental-friendly advantage by eliminating the occurrence of secondary pollutants.

In another embodiment of the present invention, after storing alkaline treated water in a treated water tank without having a separate drain tank, the control unit opens and reuses the operation valve according to the pH concentration measured from the second pH sensor, or after closing the operation valve Since the treated water can be drained to the outside through the drain pipe, the usability of the treated water is improved.

In addition, since it is possible to measure the concentration of hydrogen ions in the casing body using the second pH sensor provided in the treated water tank of the present invention and determine whether to reuse the alkaline liquid according to the measured value, the waste of the alkaline liquid can be reduced.

In addition, the present invention has an advantage in that the supply control of the chemical solution and the pH control are easily made by providing a bypass line for directly supplying the alkali solution provided between the alkali tank and the third and fourth injection units.

1 is a block diagram showing the configuration of an embodiment of the chemical cleaning method electrocatalyst oxidation deodorization and air purifier according to the present invention.
Figure 2 is a configuration diagram showing another embodiment of the chemical cleaning method electrocatalyst oxidative deodorization and air purifier according to the present invention.
3 is a view showing the use of an arrow indicating a path through which the alkaline liquid is supplied to the inside of the casing body through the bypass line according to another embodiment of the present invention.
4 is a photographic image showing test results of first and second electrocatalysts of the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of the user. Therefore, the definition should be made based on the content throughout this specification. In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

An embodiment of the chemical cleaning method electrocatalytic oxidation deodorization and air purifier according to the present invention is described with reference to FIG. 1 , an inlet 110 through which air is introduced is provided on one side and an outlet 120 is provided on the other side. and a casing body 100 having a space 105 therein; The first pre-treatment filter 210 disposed inside the space portion 105 of the casing body 100 and disposed close to the inlet 110, and the first pre-treatment filter 210 disposed at a spaced apart position It consists of a first electrocatalyst 220, and first and second spraying units 230 and 240 for spraying the acidic liquid in the acid tank 10 toward the first pretreatment filter 210 and the first electrocatalyst 220. an acid treatment unit 200 to be; A second electrocatalyst 320 disposed inside the space 105 of the casing body 100 and disposed in proximity to the outlet 120, the second electrocatalyst 320 and the first electrocatalyst The second pre-treatment filter 310 disposed between 220, and the third and fourth injection units for spraying the alkaline liquid in the alkaline tank 20 toward the second pre-treatment filter 310 and the second electrocatalyst 320 side (330,340) and alkali treatment unit 300 consisting of; a treated water drain pipe 400 connected to the bottom of the casing body 100 and draining the chemical treated water to the outside; first and second detection sensors 510 and 520 disposed inside one side and the other side of the casing body 100, detecting the odor concentration in the space 105, and outputting the sensed information to the control unit 500 side; and a control unit 500 that adjusts the injection amount of the third and fourth injection units 330 and 340 based on the information applied from the first and second detection sensors 510 and 520, and includes, the first and second electrocatalysts ( 220,320), when electric energy is applied at room temperature, electrons are excited from the valence band to the conduction band and holes are formed in the valence band, and the electrons and holes react with hydrogen and water in the air to form superoxide anions and hydroxyl radicals is an electrochemical carbon semiconductor catalyst for generating active oxygen of

The treated water to be described below is divided into acidic treated water and alkaline treated water, and the acidic and alkaline solutions sprayed through the first, second, third, and fourth spraying units 230,240,330,340 are combined with the first and second pretreatment filters 210 and 310. And after washing the first and second electrocatalysts 220 and 320, it means a chemical solution sprayed through the inner bottom surface of the casing body 100 and supplied to the drain tanks 610, 620, 630, 640 and 650.

Referring to FIG. 1 , the casing body 100 has a cylindrical structure in which an inlet 110 on one side (left side in the drawing) and an outlet port 120 on the other side (right side in the drawing) are formed, and the first , has a structure in which the space portion 105 is formed so that the second electrocatalysts 220 and 320 and the first and second pretreatment filters 210 and 310 are spaced apart from each other.

The first and second pretreatment filters 210 and 310 may employ, for example, a wet EMF (Electro Magnetic Filter) pretreatment filter suitable for removal of hydrogen sulfide and easy iron management.

The first and second electrocatalysts 220 and 320 may employ an electrochemical carbon semiconductor catalyst.

In the oxidative decomposition of the electrochemical carbon semiconductor catalyst, when electric energy is applied to the carbon semiconductor catalyst at room temperature, electrons are excited from a valence band to a conduction band, and in this case, each electron (e As ^- ) are formed, holes (h ⁺ ) are formed in the valence band.

The electrons and holes described above react with O ₂ ,H ₂ O in each air to generate two types of active oxygen, a superoxide anion (O ₂ ^- ) and a hydroxyl radical (OH ^- ). It has oxidation and reduction potentials and functions to oxidize the target material. Oxidation and decomposition reaction equations by an electrochemical carbon semiconductor catalyst (hereinafter, described in combination with an abbreviated electrocatalyst) are as follows.

[reaction formula]

2H ₂ O(H ⁺ +OH ^- )+h ⁺ → 2OH ^- +H ₂

30 ₂ +3e ^- → 3O ₂ ^-

4NH ₃ +3O ₂ ^- +3e ^- → 2N ₂ +6H ₂ 0+ㅿH

H ₂ S+2OH ^- +2h ^- → S+2H ₂ O+ㅿH

The first and second electrocatalysts 220 and 320 are 62.7% by weight of fixed carbon (test method: ASTM D 7582-15) according to the catalyst test results (tested by KTR Korea Testing and Research Institute) shown in FIG. Magnesium (Mg) 0.91 wt% (Test method: EPA 3050B, 6010D), iodine (I) 4020mg/kg (Test method: KS M 0180: 2009), Manganese (Mg) 0.60 wt% (Test method: EPA 3050B, 6010D).

The deodorization performance obtained by the present invention having the first and second electrocatalysts 220 and 320 is shown in Tables 1 and 2 below.

Test Items unit Sample classification result Test Methods complex odor dilution factor inlet 66,943 Odor process test standard: 2019 (mutually applied) complex odor dilution factor outlet 144 Odor process test standard: 2019 (mutually applied) hydrogen sulfide ppm inlet 151.60 Odor process test standard: 2019 (mutually applied) hydrogen sulfide ppm outlet 0.00 Odor process test standard: 2019 (mutually applied) trimetalamine ppm inlet 4,169 Odor process test standard: 2019 (mutually applied) trimetalamine ppm outlet 0.000 Odor process test standard: 2019 (mutually applied)

Test Items unit Sample classification result Test Methods complex odor dilution factor inlet 100,000 Odor process test standard: 2019 (mutually applied) complex odor dilution factor outlet 120 Odor process test standard: 2019 (mutually applied) hydrogen sulfide ppm inlet 5.51 Odor process test standard: 2019 (mutually applied) hydrogen sulfide ppm outlet 0.00 Odor process test standard: 2019 (mutually applied) trimetalamine ppm inlet 0.001 Odor process test standard: 2019 (mutually applied) trimetalamine ppm outlet 0.000 Odor process test standard: 2019 (mutually applied)

The target material of hydrogen sulfide and trimetalamine is removed through the first and second pre-treatment filters 210 and 310 and the first and second electrocatalysts 220 and 320 while passing from the inlet 110 of the casing body 100 to the outlet 120 side. It can be confirmed that the complex odor has also been significantly reduced due to this.

In addition, the first and second electrocatalysts 220 and 320 are formed in a bundle structure of nanotubes made of graphene or graphite material.

For this reason, the first and second electrocatalysts 220 and 320 have better electrical conductivity than a copper material and a longer lifespan because the tensile force is stronger than that of a steel material.

The acidic liquid is sprayed on the left side of the first pre-treatment filter 210 and the first electrocatalyst 220 through the first and second injection units 230 and 240, respectively, and then the first pre-treatment filter 210 and the first electrocatalyst It is used to clean the oxidized contaminants on the surface of 220 , and the alkaline solution is the left side of the second pre-treatment filter 310 and the second electrocatalyst 320 through the third and fourth injection units 330 and 340 . After being sprayed on the surface of the second pre-treatment filter 310 and the second electrocatalyst 320, it is used to clean the electrolyzed and oxidized pollutants.

The acid treatment unit 200 is provided with a first water spray pump 15 to supply the acid liquid in the acid tank 10 to the first and second injection units 230 and 240 .

The first and second spraying units 230 and 240 are configured to spray the acid solution supplied from the first water spray pump 15 toward the first pre-treatment filter 210 and the first electrocatalyst 220 in the casing body 100 . It consists of a pipe to be connected, and a spray nozzle provided at an end of the pipe.

The alkali treatment unit 300 is provided with a second water sprinkling pump 25 to supply the alkali liquid in the alkali tank 20 to the third and fourth injection units 330 and 340 side.

The third and fourth injection units 330 and 340 spray the alkaline liquid supplied from the second water spray pump 25 toward the second pre-treatment filter 310 and the second electrocatalyst 320 in the casing body 100 . It is composed of a pipe and a spray nozzle provided at an end of the pipe.

The acidic liquid and the alkaline liquid are used for cleaning and then become chemical treated water, and the chemical treated water is drained to the outside through the treated water drain pipe 400 .

A plurality of drain tanks (610, 620, 630, 640, 650) connected to the treated water drain pipe (400) and storing treated water of acidic liquid and alkaline liquid drained from the inside of the casing body (100), respectively.

The drain tank serves to store the chemically treated water before draining it to the treated water drain pipe 400 side by taking out the chemically treated water accumulated on the bottom of the casing body 100 to the outside, and storing the acidic liquid treated water. 1 and 2 drain tanks (610, 620) and 3, 4, 5 drain tanks (630, 640, 650) in which the alkaline liquid treated water is stored.

The first, second, third, fourth, and fifth drain tanks (610, 620, 630, 640, 650) are respectively pipe-connected to the treated water drain pipe 400, and control the drain amount of the chemical solution through each on/off valve provided at each pipe-connected portion. do.

The first drain tank 610 is disposed on the lower left side of the first pretreatment filter 210 to contain the acidic liquid sprayed toward the surface of the first pretreatment filter 210 , and the second drain tank 620 . is disposed below between the first electrocatalyst 220 and the first pretreatment filter 210 to contain the acidic liquid sprayed toward the first electrocatalyst 220 .

The third drain tank 630 is disposed below between the first electrocatalyst 220 and the second pretreatment filter 310 to contain the alkaline liquid sprayed toward the second pretreatment filter 310, and the The fourth drain tank 640 is disposed below between the second pre-treatment filter 310 and the second electrocatalyst 320 to contain the alkaline liquid sprayed toward the second electrocatalyst 320, and the first The 5 drain tank 650 is disposed at a lower portion between the second electrocatalyst 320 and the outlet 120 to contain the alkaline liquid that has passed through the second electrocatalyst 320 .

The fourth drain tank 640 further includes a first pH sensor 910 that measures the pH concentration of the alkaline solution treated water contained therein and outputs the measured information to the control unit 500 side.

The first pH sensor 910 measures the pH concentration of the alkaline solution treated water contained in the fourth drain tank 640, so that the control unit 500 controls the second electrocatalyst 320 in the casing body 100. The injection amount of the alkaline liquid injected into the casing body 100 can be adjusted according to the hydrogen ion index concentration of the alkaline liquid sprayed to the side.

That is, the control unit 500 controls the amount of the alkaline liquid supplied to the fourth injection unit 340 based on the pH concentration sensed by the first pH sensor 910 to prevent acidification. do.

The outlet 120 of the casing body 100 has a structure connected to the blower 150 to assist the discharge flow of the fluid passing through the casing body (100).

The first and second detection sensors 510 and 520 are disposed inside the casing body 100 close to the inlet 110 side and the outlet 120 side, and air odor before and after passing through the casing body 100 . After detecting the change in concentration, a function of outputting the sensed information to the control unit 500 is performed.

That is, the first detection sensor 510 is disposed inside one side of the casing body 100 to measure the odor concentration of the air before treatment, and the second detection sensor 520 is the casing body 100 . As the first and second pretreatment filters 210 and 310 and the first and second electrocatalysts 220 and 320 are disposed inside the other side to detect a change in odor concentration after passing through, the odor detected by the first and second detection sensors 510 and 520 By outputting the concentration change information to the control unit 500 , the control unit 500 assists in feedback-controlling the injection amount of the alkaline liquid.

At this time, the control unit 500 controls the operation of the second sprinkling pump 25 for supplying the alkaline liquid to be sprayed into the casing body 100 to adjust the feedback.

Accordingly, in an embodiment of the present invention, one section and the other section in the casing body 100 are separated and sprayed through the first, second, third, and fourth spraying units 230, 240, 330, and 340. It is possible to improve the purification efficiency of the odor-containing air by using the catalyst, and measure the pH concentration of the alkali-treated water to the second pre-treatment filter 310 and the second electrocatalyst 320 in the casing body 100 . It has the advantage of reducing the waste of the chemical liquid by controlling the spray amount of the alkaline liquid to be sprayed.

In one embodiment of the present invention, when air having a bad odor is introduced into the casing body 100 through the inlet 110 , the acid liquid in the acid tank 10 is discharged through the first injection unit 230 through the first pre-treatment filter ( 210) side, and by spraying to the first electrocatalyst 220 side through the second injection unit 240, the odor component contained in the air can be purified by contacting the pretreatment filter and the electrochemical catalyst, The oxidized pretreatment filter and the second electrocatalyst 320 are neutralized by spraying the alkaline solution to the second pretreatment filter 310 side and the second electrocatalyst 320 side through the third and fourth injection units 330 and 340 . can do it

At this time, the acidic liquid sprayed through the first and second spraying units 230 and 240 is cleaned to remove foreign substances adhering to the surfaces of the first pretreatment filter 210 and the first electrocatalyst 220 , and the metal The target material can be oxidized and decomposed through the oxidative decomposition of the electrochemical catalyst of the material.

The target material includes odor components (ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethylamine, acetaldehyde, styrene, etc.) contained in the air.

The chemical liquid of the acidic liquid and the alkaline liquid sprayed through the first, second, third, and fourth injection units 230,240,330,340 is sprayed to the first and second pretreatment filters 210 and 310 and the first and second electrocatalysts 220 and 320. , is stored in the first, second, third, fourth, and fifth drain tanks 610, 620, 630, 640, 650 through the drain provided on the bottom surface of the casing body 100, and then is drained to the outside through the treated water drain pipe 400.

Accordingly, an embodiment of the present invention provides a first pre-treatment filter 210, a first electrocatalyst 220, and a second pre-treatment filter 310 inside the casing body 100 provided with the inlet 110 and the outlet 120. ), and the second electrocatalyst 320 are disposed to be spaced apart from each other in the order of the first, second, It is possible to clean the pretreatment filters 210 and 310 and the first and second electrocatalysts 220 and 320, and use the electrochemical oxidation catalyst reaction of the first and second electrocatalysts 220 and 320 to oxidize and decompose the target material of the odor component in the air. It has the advantage of improving the deodorization performance.

In addition, according to the present invention, the injection amount of the chemical liquid can be feedback-adjusted according to the change in the odor concentration detected by the first and second detection sensors 510 and 520 provided inside one side and the other side of the casing body 100 , and the fourth drain tank 640 . By using the first pH sensor 910 provided in the feedback control of the injection amount of the alkaline solution, there is an advantage that can reduce the waste of the chemical solution.

In addition, the present invention is composed of a multi-stage chemical cleaning method and a complex method of catalytic oxidation, and uses oxidation and decomposition reactions by electrocatalysts and radicals. Therefore, it is easy to maintain the product, and it has an environmental-friendly advantage by eliminating the occurrence of secondary pollutants.

2 and 3 are views showing another embodiment of the chemical cleaning method electrocatalyst oxidation deodorization and air purifier according to the present invention.

In another embodiment of the present invention, the treated water tank 700 is provided instead of the first, second, third, and fourth drain tanks of the previous embodiment described above.

More specifically, in another embodiment of the present invention, the treated water drain pipe 400 is connected, the alkaline liquid treated water drained from the inside of the casing body 100 is stored, and a plurality of operation valves 710 . It further includes a treated water tank 700 that is piped to the third and fourth injection units 330 and 340 to selectively reuse the alkaline liquid treated water stored therein. .

The treated water tank 700 is pipe-connected to the third and fourth injection units 330 and 340 on one side, and is pipe-connected to the alkali tank 20 on the other side, depending on the operation of each operation valve 710 and the pump. The already used alkali solution can be reused into the inside of the casing body 100 .

The treated water tank 700 is connected to the treated water drain pipe 400 and can control the water level due to drainage according to the opening and closing operation of the operation valve 710 provided on the other side, and control the pH of the treated water stored therein. It has a structure connected to a water supply pipe through which water is supplied from the outside.

A second pH sensor 920 ( hydrogen ion concentration index sensor).

In addition, in another embodiment of the present invention, in addition to the pipe connected from the treated water tank 700 to the third and fourth injection units 330 and 340, from the alkali tank 20 to the third and fourth injection units 330 and 340. A bypass line 800 to which the alkaline liquid is directly supplied is further provided.

The bypass line 800 is a connection line structure in which one side of the alkali tank 20 is connected to a connection pipe side connecting one side of the treated water tank 700 and the third and fourth injection units 330 and 340 . The control valve 750 provided in the pipe connected to one side of the alkali tank 20 and the third and fourth injection units 330 and 340 side with the operation valve 710 provided on one side of the treated water tank 700 closed. In the open state, the alkaline solution is supplied to the third and fourth injection units 330 and 340 .

The bypass line 800 is normally maintained in a closed state by the control signal of the control unit 500, and is supplied into the casing body 100 when the pH concentration of the treated water tank 700 is lower than a predetermined value. It has a function of easily adjusting the pH concentration of the second electrocatalyst 320 by allowing the alkali liquid to be directly supplied from the alkali tank 20 .

In another embodiment of the present invention, after storing alkaline treated water in the treated water tank 700 without having a separate drain tank, the control unit 500 controls the operation valve ( Since it can be reused by opening 710 , or drained to the outside through the treated water drain pipe 400 after closing the operation valve 710 , it has the advantage of improving the usability of the treated water.

In addition, since the hydrogen ion concentration in the casing body 100 is measured using the second pH sensor 920 provided in the treated water tank 700 of the present invention, and whether or not the alkali solution is reused according to the measured value can be determined, It is possible to reduce the waste of alkali solution.

In addition, the present invention is provided between the alkali tank 20 and the third and fourth injection units 330 and 340 and includes a bypass line 800 for directly supplying the alkali solution, so that the supply control of the chemical solution and the pH control can be easily performed. has the advantage of being

As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiment, but should be defined by the claims and equivalents as well as the claims to be described later.

That is, the present invention described as above is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims Of course, various modifications are possible, and such modifications are within the scope of the claims.

10: acid tank 15: first water pump
20: alkali tank 25: second water pump
100: casing body 105: space part
110: inlet 120: outlet
150: blower 200: acid treatment unit
210: first pretreatment filter 220: first electrocatalyst
230: first injection unit 240: second injection unit
300: alkali treatment unit 310: second pre-treatment filter
320: second electrocatalyst 330: third injection unit
340: fourth injection unit 400: treated water drain pipe
500: control unit 510, 520: first and second detection sensors
610,620,630,640,650 : 1st, 2nd, 3rd, 4th and 5th drain tank
660: on/off valve 700: treated water tank
710: operation valve 750: control valve
800: bypass line 910: first pH sensor
920: second pH sensor

Claims (6)

A casing body 100 having an inlet 110 through which air is introduced at one side and an outlet 120 at the other side and having a space 105 therein;
The first pre-treatment filter 210 disposed inside the space portion 105 of the casing body 100 and disposed close to the inlet 110, and the first pre-treatment filter 210 disposed at a spaced apart position It consists of a first electrocatalyst 220, and first and second spraying units 230 and 240 for spraying the acidic liquid in the acid tank 10 toward the first pretreatment filter 210 and the first electrocatalyst 220. an acid treatment unit 200 to be;
A second electrocatalyst 320 disposed inside the space 105 of the casing body 100 and disposed in proximity to the outlet 120, the second electrocatalyst 320 and the first electrocatalyst A second pretreatment filter 310 disposed between 220, and a third and third injection unit for spraying the alkaline liquid in the alkaline tank 20 toward the second pretreatment filter 310 and the second electrocatalyst 320 side (330,340) and alkali treatment unit 300 consisting of;
a treated water drain pipe 400 connected to the bottom of the casing body 100 and draining the chemical treated water to the outside;
first and second detection sensors 510 and 520 disposed inside one side and the other side of the casing body 100 , detecting the concentration of odors in the space 105 and outputting the sensed information to the control unit 500 side; and
and a control unit 500 that adjusts the injection amount of the third and fourth injection units 330 and 340 based on the information applied from the first and second detection sensors 510 and 520; and
When electric energy is applied to the first and second electrocatalysts 220 and 320 at room temperature, electrons are excited from the valence band to the conduction band and holes are formed in the valence band, and the electrons and holes react with hydrogen and water in the air to form superoxide It is an electrochemical carbon semiconductor catalyst that generates active oxygen of anions and hydroxyl radicals,
The first and second electrocatalysts (220, 320) are chemical cleaning method electrocatalyst oxidation deodorization and air purifier, characterized in that consisting of fixed carbon, magnesium, iodine, and manganese. The method according to claim 1,
A plurality of drain tanks (610, 620, 630, 640, 650) connected to the treated water drain pipe 400 and storing treated water of acidic liquid and alkaline liquid drained from the inside of the casing body 100, respectively Chemical cleaning method electrocatalyst oxidation deodorization and air purifier. 3. The method according to claim 2,
A first pH sensor (910) provided in at least one of the plurality of drain tanks to measure the pH concentration of the alkaline solution stored in the drain tank and output the measured information to the control unit (500) is further provided. Chemical cleaning method electrocatalyst oxidation deodorization and air purifier. The method according to claim 1,
It is connected to the treated water drain pipe 400 , and the alkaline solution treated water drained from the inside of the casing body 100 is stored, and is directed toward the third and fourth injection units 330 and 340 by a plurality of operation valves 710 . Chemical cleaning method electrocatalyst oxidative deodorization and air purifier, characterized in that it further comprises a treated water tank 700 connected to the third and fourth injection units 330 and 340 to selectively reuse the alkaline treated water stored therein. . 5. The method according to claim 4,
A second pH sensor 920 that is provided in the treated water tank 700 and measures the pH concentration of the alkaline solution treated water in the treated water tank 700 and outputs the measured information to the control unit 500 side Chemical cleaning method electrocatalyst oxidation deodorization and air purifier, characterized in that. The method according to claim 1,
The first and second electrocatalysts (220, 320) are electrocatalyst oxidation deodorization and air purifier with chemical solution, characterized in that it is formed in a bundle structure of nanotubes made of graphene or graphite material.

Images