KR20180053144A - Deodorizing apparatus for spraying oxidant complex mist and Deodorizing method thereof - Google Patents

Abstract

According to the present invention, an apparatus to remove odor by spraying complex oxidizing mist includes: an electrolytic reactor (200) generating complex oxidizing water by receiving and electrolyzing a mixed solution, which is made by mixing dilute hydrochloric acid, from a mixed solution storage tank (100); a mist generator (300) including an ultrasonic wave oscillator (310), and making complex oxidizing mist by receiving the complex oxidizing water from the electrolytic reactor; an ozone supply control part (400) connected to the mist generator to control the supply of ozone; an external wind blowing part (500) taking odor from the outside, and discharging the complex oxidizing mist to the outside; and a mist discharge passage (600) connecting the mist generator with the wind blowing part.

Description

TECHNICAL FIELD The present invention relates to a deodorizing apparatus and a deodorizing apparatus using the same,

The present invention relates to a deodorization apparatus using a complex oxide mist and a deodorization method using the same.

A bad smell refers to an unpleasant smell, which is the result of stimulating the respiratory, circulatory, digestive, and endocrine systems of the human body, thereby causing harm to the mental and physical health. According to Article 2 (Definitions) of the Air Quality Preservation Act, "odor" means that hydrogen sulfide, mercaptans, amines, and other irritating gaseous substances stimulate human smell and give offensive and disgusting odor.

According to these regulations, a stench is a disgust and disgust that people can not enjoy everyday life. Generally speaking, it is a multi-component low-concentration mixed gas.

Of these odorous components, ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethyl amine, acetaldehyde and styrene are regulated as regulated substances.

Deodorization methods are largely divided into sensory deodorization, chemical deodorization, physical deodorization, and biological deodorization.

Sensory deodorants include masking and neutralization methods. The masking method is a method which makes it impossible to be perceived by the human olfactory by using a strong aromatic substance against the generated odor. That is, when two odors having different sensory intensities are mixed, a weak odor is concealed by a strong odor and only a strong odor is perceived. At this time, if the balance between the aromatic substance and the odor is not achieved, it may cause discomfort.

The chemical deodorization method is a method for deodorizing odors by chemical reaction such as desulfurization, neutralization, redox reaction, addition condensation reaction and ion exchange reaction of various chemical substances with odor component. Representative examples include a method using an oxidizing method using chlorine dioxide (ClO ₂ ) or ozone (O ₃ ), a method using calcium hydroxide (Ca (OH) ₂ ), calcium chloride (CaCl ₂ ), chlorine (Cl ₂ ) And a method of removing odors by using copper (II) (Cu (NO ₃ ) ₂ ) and ferric nitrate (Fe (NO ₃ ) ₃ ) (Korean Patent No. 10-0821664). In this method, it is difficult to select a chemical reactant substance which can commonly act on odorous substances having different kinds of characteristics, that is, acidic, alkaline, and neutral odor, so that it is difficult to expect a wide deodorizing effect on all the odorous substances Some chemicals to be used as deodorants require considerable care in handling. The use of a composition containing a discrete flame or chlorine dioxide as a main component is effective in decomposing odor components because chlorine gas or the like has a strong oxidizing power, but it can not remove the odor which is continuously decomposed in itself in a short time, Chlorine gas generated by self-decomposition or oxygen generated by the generator causes the environment to be polluted or the health of a person living in the vicinity of the worker or the environment is deteriorated.

The physical deodorization method is a method of removing odor substances by adsorption and absorption of various porous adsorbents, and adsorbing odor substances by using activated carbon, zeolite, activated clay, silica gel or the like. This method has a problem in that the removal of odorous substances occurs in a short time, but there is no sustainability in long-term use, and when the malodorous substances are saturated with the adsorbent, odorous substances are released again.

In addition, there is a method in which a noble metal complex compound such as Pt, Ni, Ru, Rh, Pd, Ag, Fe, Co and Ir is supported on various carriers and fired or reduced. In this method, there is a problem that the catalyst is poisoned by the components contained in the odor, and the life and efficiency are remarkably reduced.

The biological deodorization method is a method of suppressing the generation of odor by removing various microorganisms that generate odors by spraying an enzyme and an antiseptic to the source of the odor (Korean Patent No. 10-0301377). In this method, direct deodorant is directly sprayed on the source of odor, so that the deodorizing effect appears very slowly and in most cases, the effect of removing odor is insignificant.

However, the existing odor technology captures the odor gas and decomposes or dissolves the odor substance in a separate treatment facility. In addition, , Most of which are suitable for large-scale enclosures.

On the other hand, when it is difficult to collect odor such as livestock breeding facilities, food waste disposal process, odor collection is difficult, and when the source is moved, it is difficult to introduce treatment facilities, Although it is widely used, it is difficult to expect satisfactory deodorizing effect for the cost.

In addition, there was deodorization technique by deodorization of mist of deodorant. However, it is difficult to make a mist containing at least one sterilization and deodorant component due to complicated apparatus because of necessity of high-pressure compressed air and piping. It is a minor situation.

To solve these problems, there is a need to search for a deodorizing device and a method that directly acts on a malodorous substance or equipment to obtain a deodorizing effect, does not adversely affect the surrounding environment, and further minimizes the influence on the workforce .

Korean Patent No. 10-0821664 (Method for producing deodorant) Korean Patent No. 10-0301377 (deodorant composition)

In order to solve the above problems, an object of the present invention is to provide a method for producing a mixed oxidized mist by electrolyzing an aqueous solution containing dilute hydrochloric acid by using ultrasonic waves and discharging the mixed oxidized mist by using a blowing means, And a deodorization method using the deodorization apparatus.

It is another object of the present invention to provide a method and apparatus for sensing the concentration of ozone in a complex oxidized mist, controlling the supply of ozone according to the sensing value, sensing the type and concentration of the odor gas introduced from the blowing means, A discharge velocity and a concentration of ozone, and a deodorization method using the deodorization apparatus.

In order to achieve the above object, the present invention provides a deodorization apparatus using mist of composite oxide mist, comprising: an electrolytic reaction tank for receiving a mixed aqueous solution from a mixed aqueous solution storage tank containing mixed aqueous solution of diluted hydrochloric acid and an electrolytic solution, A mist generating tank provided with an ultrasonic oscillator and supplied with the mixed oxidation water from the electrolytic reaction tank to produce a mist of the mixed oxidized water and a mist generating tank connected to the mist generating tank,

An ozone supply control unit including an ozone generator and an ozone generator, and an ozone supply controller for controlling ozone generated by the ozone generator, an external air supply unit for introducing an external odor and discharging the produced composite oxide mist, and a mist discharge duct for connecting the mist generator and the air blower.

The ozone supply control unit includes an ozone sensing unit for sensing the ozone concentration in the mist generation tank, an ozone supply unit for supplying ozone to the mist generation tank, and an ozone concentration sensor for receiving the ozone concentration value from the mist generation tank, And an ozone interlocking controller for supplying ozone and shutting off the supply of ozone when the ozone concentration exceeds a preset ozone concentration value.

The ozone supply unit includes an ozone storage tank for storing ozone; A pressure regulator for regulating a pressure in the ozone storage tank; And an ozone injection pipe connected to the mist generation tank for injecting ozone stored in the ozone storage tank.

The ozone injection tube includes a ball-shaped membrane diffuser for diffusing ozone to increase the contact surface area with the complex oxide mist.

The malodorous gas sensing unit senses the type and the concentration of the malodorous gas flowing from the external air supply unit. The malodorous gas sensing unit receives the type and concentration of the malodorous gas from the malodorous gas sensing unit, And a malodor gas interlocking control unit for increasing the production rate, the discharge rate and the concentration of ozone.

Wherein the external blowing unit comprises: a blowing pipe; Wherein the external odor is introduced by the blowing fan and mixed with the mixed oxidizing mist discharged from the mist discharge channel and discharged to the other side of the blowing pipe. do.

And the mist discharge passage may further include an internal blower for adjusting a discharge speed of the generated complex oxidizing mist.

In order to solve the above problems, the present invention provides a deodorization method using a mist spray of complex oxide mist, which comprises an electrolytic reaction for generating mixed oxidation water by receiving a mixed aqueous solution from a mixed aqueous solution storage tank containing mixed aqueous solution of dilute hydrochloric acid and an electrolyte, A mist generation step (S200) of supplying a mixed oxidation water from the electrolytic reaction tank in a mist generation tank and making mist by using ultrasonic waves; (S300) for sensing the concentration of ozone in the mixed oxidized mist, and supplying ozone to the ozone supply unit when the sensed ozone concentration value is less than a predetermined ozone concentration value, And a blowing step S500 for blowing out the odor from the outside and discharging the produced mixed oxidizing mist.

The ozone supply and control step S400 includes an ozone concentration receiving step (S410) of receiving the sensed ozone concentration value and an ozone transportation step (step S410) of sending ozone stored in the ozone storage tank to the ozone injection tube S420); (S430) in which the ozone is diffused into the composite oxidizing mist while passing through the ball-shaped membrane diffuser provided in the ozone injecting pipe (S430). When the ozone supplied to the mixed oxidizing mist exceeds the preset ozone concentration value, And an ozone supply cutoff step (S440) for shutting off the ozone.

The deodorization method includes: a malodorous gas sensing step of sensing the type and concentration of malodorous gas flowing from the external inflow part; And an odor gas interlocking control step of increasing the concentration of ozone.

As described above, according to the deodorization apparatus using the composite oxidized mist spray according to the present invention and the deodorization method using the same, the complex oxidized mist produced by electrolysis of the aqueous solution containing dilute hydrochloric acid is produced by using ultrasonic waves , And discharging it by using a blowing means, there is an effect of decomposing the odor-induced gas.

In addition, according to the deodorization apparatus using the composite oxidized mist spray according to the present invention and the deodorization method using the same, the concentration of ozone in the complex oxidized mist can be sensed, the supply of ozone can be controlled according to the sensing value, It is possible to improve the deodorization efficiency of the odor gas by sensing the type and concentration of the gas and controlling the production rate, the discharge rate and the concentration of the ozone depending on the sensing value.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a deodorization apparatus using a mist of composite oxide mist according to the present invention. FIG.
2 is a view showing the configuration of an ozone supply unit according to the present invention;
FIG. 3 is a flow chart showing a deodorization method by a composite oxidized mist spray according to the present invention. FIG.

Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. The detailed description of the functions and configurations of the present invention will be omitted if it is determined that the gist of the present invention may be unnecessarily blurred.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a configuration of a deodorization apparatus using a composite oxidized mist spray according to the present invention. FIG.

The deodorization apparatus according to the present invention includes an electrolytic reaction tank 200 for generating mixed oxidation water by receiving a mixed aqueous solution from a mixed aqueous solution storage tank 100 containing a mixed aqueous solution in which dilute hydrochloric acid and an electrolyte are mixed, And an ultrasonic oscillator 310. The mist generating tank 300 receives the mixed oxidized water from the electrolytic reaction tank and mixes the mixed oxidized water to produce a mixed oxidized mist. The mist generating tank 300 is connected to the mist generating tank, An ozone supply control unit 400 and an external blowing unit 500 for introducing odor from the outside and discharging the produced composite oxidizing mist and a mist discharge duct 600 for connecting the mist generating unit and the blowing unit.

The mixed aqueous solution storage tank 100 is prepared and mixed with an electrolyte in order to increase the electrolysis efficiency of dilute hydrochloric acid (HCl + H ₂ O) having excellent germicidal effect.

In this case, the concentration of dilute hydrochloric acid is preferably 10% or less, more preferably 1 to 5%, and further preferably 2 to 4% in consideration of environment and human harmfulness.

None of If material that exhibits electrical conductivity when they were dissolved in the solvent of the electrolyte that type include, but not limited to, preferably sodium chloride (NaCl), magnesium chloride (MgCl _2), potassium chloride (KCl), calcium chloride (CaCl ₂₎ It can be more than one.

The mixed aqueous solution stored in the mixed aqueous solution storage tank 100 is transferred to the electrolytic reaction tank 200 by a supply pump and a predetermined voltage and current are supplied to the mixed aqueous solution in the electrolytic reaction tank 200, Hydrogen (H 2) is generated in the cathode and chlorine (Cl 2) and oxygen (O 2) are generated in the anode, and complex oxidized water containing a bactericidal substance is produced as shown in the following Chemical Formula (1).

The following formula 1 shows the reactions generated by electrolysis.

The mist generating tank 300 receives the mixed oxidation water from the electrolytic reaction tank 200 and mists the mixed oxidized water to produce a combined oxidized mist.

At this time, an ultrasonic oscillator 310 is provided at the lower end of the mist generation tank 300, and an ozone supply control unit 400 is connected between the upper end and the upper end.

Here, the term " intermittent to upper side " refers to a position where the composite oxide mist is formed and raised at a position that is not affected by the high frequency of the ultrasonic oscillator.

The mixed oxidized water flowing into the mist generating tank 300 is misted by an ultrasonic oscillator provided at the lower end. The mixed oxidized mist is detected by the ozone supply control unit 400, Thereby controlling the supply of ozone.

The ozone supply control unit 400 includes an ozone sensing unit (not shown) for sensing the ozone concentration in the mist generation tank, an ozone supply unit 420 for supplying ozone to the mist generation tank, And an ozone interlocking control unit (not shown) for supplying ozone if the ozone concentration value is less than or equal to the preset ozone concentration value and for stopping ozone supply if the ozone concentration value is exceeded.

2, the ozone supply unit 420 is connected to an ozone storage tank 421 for storing ozone, a pressure regulator 422 for regulating the pressure in the ozone storage tank, and a mist generation tank And an ozone injection tube 423 for injecting ozone stored in the ozone storage tank. The ozone injection tube 423 includes an opening and closing part 423-b for supplying or shutting off ozone by opening and closing, And a membrane diffuser 423-a for increasing the contact surface area with the mixed oxidation mist.

The formation position of the membrane diffuser 423-a is formed at a position close to the mist generation tank (the end portion of the ozone injection tube), and the formation position of the opening portion 423-b is located near the ozone storage tank When the opening / closing part is opened, the ozone moves along the inside of the ozone injection tube, and the surface area of contact with the complex oxidation mist can be further increased while passing through the membrane diffuser 423-a.

In this case, the membrane diffuser 423-a is not limited as long as it can diffuse and disperse the ozone to widen the mixing ability and the contact area with the complex oxide mist. Specifically, the membrane diffuser 423-a includes a nano- A laminated film obtained by laminating a membrane of a membrane, porous ceramic or the like can be used.

In addition, although the shape of the membrane diffuser 423-a is not limited, it is preferable that the membrane diffuser 423-a has a shape of a ball that can widen the surface area.

More specifically, the ozone coupling control unit receives the ozone concentration value from the ozone sensing unit 410 and supplies ozone in the ozone storage tank 421 to the mist generation tank 300 do.

The inside of the ozone storage tank 421 is maintained at a predetermined pressure by the pressure regulating unit 422 and the opening and closing unit 423-a is opened according to the ON signal of the ozone interlocking control unit, (200).

That is, the injection of ozone is performed not by using a pump which consumes electric power but by an ON / OFF signal sent from the ozone interlocking control unit.

The outer blowing part 500 is formed with a blowing fan 510 and a blowing fan 520 on one side of the blowing pipe and an outlet 530 through which air mixed with the combined oxidizing mist and the mixed oxidizing mist is discharged from the other side .

It is preferable that the outer blowing portion 500 is connected to the mist generating bath 300 by the mist discharging passage 600 and the mist discharging passage 600 is formed to have a smaller diameter than the oil of the mist generating bath.

If the diameter of the mist discharge passage 600 is large, the generated mixed oxidized mist can be discharged indiscriminately, and the pressure difference between the outside air and the inside air is substantially similar. Therefore, It becomes difficult to discharge the mist, and the limitation of the mist discharge flow path 600 can be overcome by reducing the diameter of the mist discharge flow path 600.

The air containing the external odor gas is introduced by the operation of the blowing fan 520. The introduced air pushes the mixed oxidized mist and is mixed with the mixed oxidized mist and discharged to the outside through the outlet 530. [

At this time, the mist discharging passage 600 may further include an internal air supply portion 610 to control the discharge speed of the generated composite mist mist.

In addition, the deodorization apparatus of the present invention includes a malodorous gas sensing unit (not shown) for sensing the type and concentration of the malodorous gas introduced from the external inflow portion and a predetermined value for receiving the type and concentration value of the malodorous gas from the malodorous gas sensing unit And a malodor gas interlocking control unit (not shown) that increases the rate of formation, discharge rate, and ozone concentration of the mixed oxidized mist, when the amount of the mist is greater than the predetermined value.

The odor gas to be sensed may include ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethyl amine, acetaldehyde and the like. Depending on the type and concentration of the malodorous gas, By making the content and the concentration different, it becomes possible to increase the rate and efficiency of deodorizing the odor gas.

For example, the malodorous gas sensing unit may determine the type of the malodorous gas to be sensed, measure the concentration when the predetermined malodorous gas is sensed, and transmit the information to the malodor gas interlocking control unit.

At this time, the malodor gas interlocking control unit sets the content of ozone necessary according to the type and concentration of the malodorous gas, receives the sensing information, .

The supply rate of the mixed oxidized mist can be varied depending on the type and concentration of the malodorous gas. The production rate of the mixed oxidized mist can be controlled by changing the oscillation frequency of the ultrasonic wave. The discharge speed can be controlled by varying the rotational speed of the blowing fan. For example, when the toxic and highly concentrated odor gas is sensed, the frequency of the ultrasonic oscillator and the rotational speed of the blower fan can be increased to increase the deodorization speed and efficiency of the odor gas.

For example, when the malodorous gas sensing unit senses that the malodorous gas is ammonia, methyl mercaptan, or hydrogen sulfide and contains methyl mercaptan in the malodor gas flowing through the external air blowing unit, the sensed gas is sensed and the concentration of methyl mercaptan .

On the other hand, if the odor gas interlocking control unit contains 2 to 4 ppm of methyl mercaptan, if the ozone concentration of the complex oxide mist is 5 ppm and the methyl mercaptan is 5 to 8 ppm, the ozone concentration of the complex oxide mist is 10 ppm, When 1 to 5 ppm of hydrogen sulfide is sensed, the ozone concentration is set to be 20 ppm.

If 3 ppm of methyl mercaptan is sensed while the mixed oxidized mist having an ozone concentration of 2 ppm is sprayed, the malodor gas interlocking controller 800 supplies ozone to have an ozone concentration of 10 ppm.

If it contains 3 ppm of hydrogen sulfide and 7 ppm of methyl mercaptan, it is supplied so as to have a high ozone concentration value, that is, an ozone concentration of 20 ppm, so that hydrogen sulfide and methyl mercaptan can be simultaneously deodorized.

At this time, the formation position of the odor gas sensing part is formed in the interior of the blowing pipe, more specifically, between the vicinity of the blowing fan and the point where the mist discharge channel is connected to sense the mixed oxidizing mist component other than the odor gas .

Hereinafter, the deodorization method using the composite oxidized mist spray according to the present invention is performed using the deodorization apparatus using the above-described complex oxidized mist spray.

FIG. 3 is a flowchart showing a deodorization method using a composite oxidized mist spray according to the present invention.

The method for deodorization by mist of composite oxide mist according to the present invention includes an electrolysis reaction step (S100) for supplying a mixed aqueous solution from a mixed aqueous solution storage tank containing mixed aqueous solution of diluted hydrochloric acid and an electrolyte and electrolyzing to generate mixed oxidized water A mist generating step (S200) for supplying the mixed oxidation water from the electrolytic reaction tank in the mist generating tank and making the mixed oxidation mist by making use of ultrasonic waves to generate mist; and an ozone sensing step (S300) for sensing the ozone concentration of the mixed oxidation mist If the sensed ozone concentration value is less than the pre-set ozone concentration value, the ozone supply unit supplies ozone. If the sensed ozone concentration value is exceeded, the ozone supply and control step (S400) And a blowing step S500 for discharging the produced composite oxidized mist.

In addition, the ozone supply and control step S400 may include an ozone concentration receiving step (S410) for receiving the sensed ozone concentration value and an ozone transportation step for sending ozone stored in the ozone storage tank to the ozone injection tube (S430) and an ozone diffusion step (S430) in which ozone is diffused into the complex oxidation mist passing through the ball-shaped membrane diffuser provided in the ozone injection tube and when the ozone supplied to the complex oxidation mist exceeds the preset ozone concentration value And an ozone supply cutoff step (S440) for cutting off the ozone supply.

The method of deodorizing by the mist of the mixed oxidized mist according to the present invention is characterized in that the odor gas sensing step for sensing the type and concentration of the odor gas introduced from the external blowing unit, And a malodor gas interlocking control step of increasing the production rate of the oxidized mist, the discharge rate and the concentration of ozone, so that the deodorization speed and efficiency of the malodor gas can be increased.

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

Electrolysis

The electrode material used in the experiment was selected as follows.

In the case of the anode, an electrode called DSA is generally used to generate chlorine, but in this experiment, an electrode using a material of an Ir group element having a low oxygen overvoltage as a main catalyst is used in order to simultaneously generate chlorine and ozone (O ₃ ) .

In the case of the cathode, hydrogen and low voltage electrodes should be used to facilitate the generation of hydrogen, in order to increase the pH by lowering the hydrogen ion concentration.

Therefore, in the experiment, an electrode made of STS316 which is low in hydrogen overvoltage and low in price was used as a cathode.

When dilute hydrochloric acid is supplied to the electrolytic cell and a direct current of 1-5 V is supplied to the electrode from the rectifier, dilute hydrochloric acid decomposes at the surface of the electrode.

On the right and left sides of a positive electrode of 60 mm x 120 mm x 0.5 t, the negative electrode of the same standard was installed in a 1 L beaker at 2 mm intervals.

The beaker was filled with 1 L HCl having an effective height of 11.5 cm, and the electrode was fixed at a depth of 9 cm.

The voltage and HCl concentrations were operated at 2 ~ 4 V and 2.2% (w / v), respectively. In addition, current efficiency was evaluated by addition of NaCl (5, 10, 20 g / L) to 2.2% HCl.

In addition to the various concentrations of oxidant derived from this experiment, the oxidant yield was used as a performance index to find the optimum voltage and concentration of hydrochloric acid. All three oxidants produce 0.5 mol per 1 mol of electron. Therefore, the current efficiency (oxidant generation yield) was calculated as follows:

_{Here, HOCl, H 2 O 2,} O 3: oxidant generation amount (mol), F: Faraday constant (96,485 C / mol), V : voltage (V), A: current (A), t: accumulated time (s) to be.

Table 1 below shows the electrolysis test results.

As a result, it was confirmed that the concentration of HOCl (≥50 mg / L) was satisfied in most of the conditions, although the composition of the complex oxidation water, which is a product of electrolysis, was also distributed according to the voltage and the hydrochloric acid concentration. It can be seen that the efficiency of formation of complex oxidation with respect to voltage and input energy is inversely proportional. Especially, in case of ozone concentration, the increase in the concentration due to the voltage increase is insignificant compared with the Cl ₂ concentration. The amount of oxidizing agent increased proportionally to the amount of NaCl added at all voltages, but the current also increased and the oxidizing agent production yield tended to decrease. Therefore, it was considered that it would be preferable to consider the addition of NaCl when the amount of oxidizing agent is insufficient.

The optimum condition for the combined oxidation yield of the input energy for each voltage was 2 or 3 V without NaCl, but the concentration of HOCl produced at 3 V was about 17 times higher than that of 2 V . Therefore, it was determined that the optimum electrolysis conditions were 3 V without HCl, 2.2% HCl, and then the experiment was conducted.

Complex oxidation Mist  Produce

Laboratory scale experiments were performed to generate the mist of the complex oxidized water produced through the above experiment. The oxidant produced through the batch electrolysis experiment was produced by using a commercial humidifier, and the power consumption and mist generation at that time were investigated.

The mist generation experiment was performed using a commercially available humidifier (UHH-505W, Hanil Electric), and the parts specifications and specifications of the humidifier are as follows.

Specification: 150W * 322D * 303H * Acrylic, Weight: 3.2kg, Capacity: 5L, Rated voltage: Single phase 220V, 60Hz, Power consumption: Heating up to 110W, Ultrasonic up to 35W, Humidity up to 400mL / h, One

The power consumption was measured using the SJPM-C16 power meter. The amount of oxidant converted to mist per hour was measured by filling the humidifier with the oxidant generated through the batch electrolysis experiment.

 As a result, the amount of water consumed was 300 mL, which can be converted to 6 mL / min. 30.8 W for electric power, 214 V for voltage and 0.143 A for electric current, and the electricity rate was 417.7 when converted to the monthly average electric power consumption (401-500 kWh). Therefore, when 1 mL of mist is generated for 1 month, the electricity rate can be calculated as 1.39 won / month, and it is planned to be used for economic evaluation of mist generation.

Experimental deodorizing device

The experimental deodorizing device manufactured through this technology development is divided into electrolytic module and Mist generation module. Specifically, as a raw material for producing the complex oxidation water in the electrolytic module, 2% dilute hydrochloric acid (HCl) is used according to the optimum conditions. Generally, concentrated hydrochloric acid used for industrial use has a concentration of 35%. If it is used as it is, HCl vaporizes and it is harmful to the human body. HCl does not vaporize at a concentration of about 15% There is no great danger. This diluted hydrochloric acid is precisely controlled by a dosing pump and sent to the electrolysis tank.

Since the pH of the stock solution is low and the concentration of the oxidizer is high, the electrolytic reaction occurs, and then the tap water in the range of 1,000 to 2,000 times of the feed raw material is supplied and mixed to obtain the desired concentration of the complex oxidant. The process of supplying tap water consists of the following parts.

Since the pressure of the tap water is more than 3kg / ㎠, attach the pressure reducing valve to lower the pressure, connect the flow sensor to detect the flow of the constant flow, and install the solenoid valve to perform the ON / OFF operation as a whole. The combined oxidized water produced through these processes is stored in a storage tank, while hydrogen having a low solubility is separated out from water and released into the atmosphere.

Specifications and specifications of main parts of electrolytic module are as follows.

Electrolyzer: 100W * 30D * 300H * Acrylic, anode: 6cm * 20cm * 0.5t * Iridium, 2 cathodes: 6cm * 20cm * 0.5t * STS316, rectifier: DC6V * 40A, solenoid valve: 15A, Decompression valve: 15A, ring pump: 40mL / min * DC24V, chemical container: PE * 1000mL, PCB, control panel: 600W * 300D * 1200H

The structure of the electrode and the electrolytic cell is as follows.

First, the electrode material was coated with the electrode catalyst material on the titanium surface in the case of the anode, and lrO2 + RuO2 as the main material of the catalyst material, and the other auxiliary catalyst material was further mixed. The thickness of the coating is 30 mu m. For the cathode, STS316 was used. Both the anode and the cathode were composed of 6 cm * 20 cm * 0.5 t. The current density of the electrode was 0.1 to 0.2 A / cm 2, and the electrode interval was maintained at 3 mm. The electrode thus constructed was installed in an electrolytic cell of a standard of 100W * 30D * 300H.

The specifications of the rectifier are as follows. Input 2P * 220V * 60Hz, Output DC V 0-10V and DC A 0-50A. The rated capacity is 1KVA, and it is possible to supply constant voltage and constant current.

This deodorization system is composed of tap water whose flow rate is adjusted in the electrolytic reaction tank and HCl whose flow rate is adjusted through the raw material supply device is mixed in the mixer to produce diluted complex oxidized water, which is stored in a storage tank and then used have. The dilution water flow rate can be adjusted within the range of 30-192 L / hr. For HCl, a flow rate of 10 or 20 mL / min can be selected. The capacity of the electrolytic cell is 100 mL, so the residence time is 5 minutes and 10 minutes.

Experiments were carried out to observe the optimal conditions for continuous oxidation of mixed oxidized water using the pilot scale combined oxidation water generator. The experimental method is as follows. The optimum voltage condition derived from the batch experiment was 3 V, but in order to verify the generation efficiency in the continuous process, the experiment was performed under the condition of voltage 2-4 V and HCl concentration 2.2% (w / v). HCl influent retention time was 5 min and no dilution was done using tap water.

Continuous operation result of pilot scale electrolysis device

Table 2 shows the results of electrolysis of 2.2% HCl supplied to the pilot scale combined oxidation water generator.

As the hydrochloric acid solution flowed rapidly through the electrode surface, the supply of the reactants and the outflow of the products progressed smoothly, so that a current similar to that of the laboratory batch was observed, and the concentration composition of each oxide showed a similar tendency. In particular, the current efficiency at 3 V and 2.2% was 91.65%, which is very high. All of the four experimental conditions were able to maintain the oxidation yield over 30 L / hr. The ozone concentration and HOCl concentration exceeded the target values of 1 mg / L and 30 mgCl2 / L, respectively, under all conditions except HRT 5 min and 3.5 V, and the composition and performance of the sterilizing device at a level that can be commercialized were proved.

The highest oxidizer yield was 3 V and the retention time was 5 min. At this time, the current was 2 A, and 91.64% of the injected electrons were converted to oxidizing agent. The HOCl and O3 characteristics of the complex oxidation water were verified by self - analysis and analysis of accredited agency. As a result of literature review, the general oxidizing conversion efficiency is 62.7 ~ 83%, which indicates that the conversion of oxidizing agent in this experiment is very high.

Ultrasonic vaporization of the complex electrolytic water generated by the electrolysis apparatus for the experiment and deodorization and disinfection

The experimental deodorizing device was constructed.

Experimental deodorization equipment was designed to reduce the vaporization and odor substances by irradiating ultrasound to the complex electrolyte or tap water produced in the electrolytic unit. In order to maximize the efficiency, ozone generator was installed, and mist generated by ultrasonic wave and mixed injection Respectively.

Both the ozone gas line and the oxidized water inlet line consisted of stainless steel to prevent corrosion.

The oxidized water inlet line feeds the combined oxidation water generated by the electrolyzer and controls the flow rate of oxidized water by the electrolyzer water level sensor. The ultrasonic oscillator is also equipped with a water level sensor, and when it is low, the operation is stopped to protect the ultrasonic oscillator vibrator.

When the mist was generated by using the ultrasonic oscillator, the mixed oxidation water or tap water consumed per hour was measured, and it was confirmed that the solution was converted into mist at a rate of 3 L / hr.

An ozone generator is installed at the lower end of the deodorizer to selectively perform ozone generation and mixing. The amount of ozone generated by the ozone generator is 3 g O3 / hr or 1,400 mL / hr. If necessary, dilution can be performed using a blower of 1 to 15 L / min.

The generated mist is introduced into the vessel using a 300 m3 / hr fan located at the top of the deodorizer, and the introduced air pushes out the mist and exits through the outlet quantitatively. Therefore, it was deemed that the mist and odor substances produced through the deodorizing device could be quantitatively reacted in the reaction tank, and the reaction tank was made.

The effective volume of the reaction tank is 70 L, and the mist and the odorous substance are mixed in the inlet and discharged from the outlet after the reaction in the 70 L reactor. In order to treat odorous substances at 5 ° C, three materials such as ammonia, hydrogen sulfide and acetaldehyde were customized to 5 ° C concentration according to Table 3.

In order to verify the concentration of the prepared odor materials and to analyze the quantitative concentration of the deodorization experiment, the concentration of the odorous substance was checked through the experiment. The experimental method is as follows. (GV-100S, GASTEC) and odorant detection tube (ammonia: NH3-3L; 0.5 ~ 78ppm, Acetate) were collected in a container filled with the manufactured odor materials. 1 to 20 ppm of aldehyde: CH3CHO-92L, and hydrogen sulfide: H2S-4LB; 0.5 to 12 ppm). As a result of the experiment, it was found that the quantitative analysis of odor materials using the detector tube can easily find the approximation of the concentration.

The deodorization experiment was carried out using the above-described combined oxidizing water generator and deodorizing furnace. The experimental method is as follows. When odor gas was sprayed into the reaction tank at a rate of 10 L / min by installing a flow meter in the odor gas container, when mist was sprayed using only tap water, when the ozone device was operated at a rate of 15 L / min, The deodorizing ability of ozone device and tap mist was evaluated by spraying mist. In the case of ammonia, mist generation and deodorization experiment using oxidizing agent were performed to show possibility of elimination. All experiments were conducted to determine the effluent concentrations after deodorizing materials and odor gases were mixed for 10 minutes in various conditions in the reactor. The experimental results are summarized in Table 4.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken as limiting the scope of the present invention. The present invention can be variously modified or modified. The scope of the invention should, therefore, be construed in light of the claims set forth to cover many of such variations.

100: Mixed aqueous solution storage tank
200: electrolytic reaction tank
300: mist generation group
310: Ultrasonic Oscillator
400: Ozone supply control unit
420: ozone supply part
421: Ozone storage tank
422: Pressure regulator
423: Ozone injection tube
423-a: Membrane diffuser
423-b: opening /
500: External power supply
510:
520: blowing fan
530: Outlet
600: mist discharge channel
610: Internal discharge

Claims (10)

In a deodorization apparatus using mist of composite oxide mist,
An electrolytic reaction tank which receives a mixed aqueous solution from a mixed aqueous solution storage tank containing mixed aqueous solution of dilute hydrochloric acid and an electrolyte and electrolyzes the mixed aqueous solution to generate mixed oxidized water;
A mist generating tank provided with an ultrasonic oscillator and supplied with the complex oxidation water from the electrolytic reaction tank to produce a mist,
An ozone supply control unit connected to the mist generation tank for controlling supply of ozone;
An external air blowing unit for introducing an external odor and discharging the produced composite mist mist;
And a mist discharging passage connecting the mist generating tank and the blowing unit.
(Deodorization device by misty mist spray).
The method according to claim 1,
The ozone supply control unit
An ozone sensing unit for sensing the ozone concentration in the mist generating tank;
An ozone supply unit for supplying ozone to the mist generation tank;
And an ozone interlocking control unit for supplying ozone when the ozone concentration value is received from the ozone sensing unit and the ozone concentration value is lower than a preset ozone concentration value and for stopping ozone supply if the ozone concentration value is exceeded,
(Deodorization device by misty mist spray).
3. The method of claim 2,
The ozone supply unit
An ozone storage tank for storing ozone;
A pressure regulator for regulating a pressure in the ozone storage tank;
And an ozone injection pipe connected to the mist generation tank for injecting ozone stored in the ozone storage tank
(Deodorization device by misty mist spray).
The method of claim 3,
The ozone injection tube
And a ball-shaped membrane diffuser for diffusing ozone to increase the contact surface area with the complex oxide mist
(Deodorization device by misty mist spray).
The method according to claim 1,
The deodorizing device
A malodorous gas sensing unit for sensing the type and concentration of the malodorous gas flowing from the external airflow rich portion;
And a malodor gas interlocking controller for increasing the rate of formation, discharge rate and ozone concentration of the complex oxidized mist when the type and the concentration value of the malodorous gas are received from the malodorous gas sensing unit and the predetermined value is exceeded
(Deodorization device by misty mist spray).
The method according to claim 1,
The external blower
A blowing pipe;
And a blowing fan formed on one side of the blowing pipe,
The external odor is introduced by the blowing fan and the inflowing external odor is mixed with the mixed oxidation mist discharged from the mist discharge flow path and is discharged to the other side of the blowing pipe.
(Deodorization device by misty mist spray).
The method according to claim 1,
The mist-
(610) for controlling the discharge rate of the generated complex oxidizing mist
(Deodorization device by misty mist spray).
In a deodorization method using a composite oxide mist spray,
An electrolytic reaction step (S100) in which a mixed aqueous solution is supplied from a mixed aqueous solution storage tank containing dilute hydrochloric acid and an electrolytic solution and electrolyzed to generate mixed oxidized water;
A mist generation step (S200) of supplying a mixed oxidation water from the electrolytic reaction tank in a mist generating tank and making mist by using ultrasonic waves to produce a combined oxidation mist;
An ozone sensing step (S300) of sensing the ozone concentration of the complex oxide mist; and
A step (S400) of supplying and controlling ozone to supply ozone if the ozone concentration value is sensed and is less than a predetermined ozone concentration value, and to stop ozone supply if the ozone concentration value is exceeded,
And a blowing step (S500) of introducing an external odor and discharging the produced composite oxidizing mist
Deodorization method by mist of composite oxide mist.
9. The method of claim 8,
The ozone supply and control step (S400)
An ozone concentration receiving step (S410) of receiving the sensed ozone concentration value;
An ozone transfer step (S420) of sending ozone stored in the ozone storage tank to the ozone injection tube when the ozone concentration is less than a preset ozone concentration value;
An ozone diffusion step (S430) in which ozone is diffused into the complex oxidation mist through the ball-shaped membrane diffuser provided in the ozone injection tube; and
And an ozone supply cutoff step (S440) for shutting off the ozone supply if the ozone supplied to the complex oxide mist exceeds the predetermined ozone concentration value
Deodorization method by mist of composite oxide mist.
9. The method of claim 8,
The deodorization method
A malodorous gas sensing step of sensing the type and concentration of the malodorous gas flowing from the external air-rich part;
And a malodor gas interlocking control step of increasing the production rate, the discharge rate and the concentration of ozone of the complex oxidized mist when the kind and concentration value of the malodorous gas are exceeded and the predetermined value is exceeded
Deodorization method by mist of composite oxide mist.

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