KR102635178B1 - An odor removal device using parallel type adsorption apparatus - Google Patents

Abstract

A parallel adsorption tank for removing malodors in which an adsorbent for removing malodors is injected into a cylindrical casing and a malodor removal device using the same are disclosed. The adsorption tank for removing malodor of the present invention includes an external housing having an inlet and an outlet; An internal mesh net located inside the outer housing, capable of accommodating an adsorbent inside, having an open inlet at the top, having a mesh shape on the side to allow air to pass through, and having a bracket attached to the top; A bracket having a mesh fixing bar formed at the lower portion to secure the inner mesh net to the lower portion; and a perforated pipe that extends long inside the internal mesh network and has a plurality of air holes formed on the sides, wherein the internal mesh network is filled with an adsorbent, and an internal air flow path is formed inside the perforated pipe. It is characterized in that odor passes through the adsorbent through the air passage. According to the present invention, the pressure loss is small and the air flows smoothly due to the internal air flow path and the external air flow path of the adsorption tank for malodor removal, so that bad odor and ozone can be removed through a continuous oxidation reaction in the adsorption tank.

Description

An odor removal device using parallel type adsorption apparatus}

The present invention relates to a malodor removal device using a parallel adsorption tank for malodor removal, and more specifically, to a parallel adsorption apparatus for malodor removal in which an adsorbent that removes malodors by adsorbing and oxidizing ammonia, methane, etc. is injected into a cylindrical casing. This relates to an odor removal device using millet.

Odor includes the odor of the bacteria themselves (organic substances) caused by the mass reproduction of microorganisms such as bacteria and mold, the odor of various metabolites such as fatty acids, aldehydes, and ketone compounds generated by the metabolic activities of these bacteria and microorganisms, and the odor of food. There are odors from the molecular substances themselves, such as odors, cigarette odors, toilet odors, livestock odors, etc.

To purify air containing such odors, the odor of bacteria or microorganisms themselves can be deodorized through a sterilization process. Odors from metabolites and the odors of the molecular substances themselves can be deodorized by passing them through a highly absorbent filter and filtering them using methods such as adsorption.

The various technologies currently used to remove odors are as follows.

First, there are physical methods such as washing method (water, activated carbon suspension, etc.), cooling condensation method (water cooling, air cooling, etc.), adsorption method (activated carbon, zeolite, etc.), and dilution method (atmospheric diffusion, etc.).

Second, there are chemical methods such as combustion methods (direct combustion method, catalytic combustion method, etc.) and chemical treatment methods (acid, alkali cleaning method, chemical cleaning method, oxidation method, concealment method, neutralization method, liquid catalyst method, etc.).

Third, biochemical methods such as soil deodorization method, activated sludge method (scrava, aeration tank method, etc.), biofilter, humus deodorization method, etc.

Among these existing technologies, the principles and pros and cons of each commonly used deodorization method are as follows.

The biofilter deodorization method is a method of biologically treating microorganisms by immobilizing them on natural or artificial carriers. Its advantages are that it is suitable for processing low-concentration, high-quality gases, has low operating costs, has a complex gas processing function, and does not cause secondary pollution. Disadvantages include the large installation area of the device, unsuitability for high-temperature exhaust gas treatment, and unsuitability for high-concentration gas treatment.

The soil deodorization method is a method of removing odor components using microorganisms in the soil layer. The advantages are simple equipment, low initial investment, and low operating costs, but the disadvantages are the large installation area and operating conditions. It is difficult to select and is unsuitable for processing high temperature and high concentration exhaust gases.

The activated carbon adsorption method is a treatment method based on the physical adsorption capacity of activated carbon. The advantage is that the equipment is simple and suitable for low-concentration odor removal, but the disadvantage is that secondary pollution occurs when the activated carbon is disposed of, and tar, moisture, and dust are present. It is vulnerable to fire, etc., and there is a risk of fire when processing VOCs.

The catalytic combustion method oxidizes odor components at a temperature of 350~450℃. The advantage is that it is advantageous for high concentration gas treatment and is suitable for high temperature exhaust gas treatment, but the disadvantage is high initial investment cost, low concentration, and high temperature during intermittent operation. These include operating costs and difficulty in processing catalyst materials.

The direct combustion method thermally oxidizes and decomposes odorous components at a high temperature of 850℃ or higher. The advantage is that it is advantageous for high-concentration gas processing and has a variety of component processing functions, but the disadvantage is high investment cost, low concentration, and high temperature during intermittent operation. NO _x components may be emitted due to operating costs and high-temperature oxidation.

The chemical cleaning method uses an oxidizing agent to decompose odorous components. The advantage is that it is less affected by the temperature of the treated gas, it is suitable for processing low-concentration large quantities of gas, and it is possible to treat dust simultaneously. The disadvantage is that it has low deodorization. Efficiency, increased cost for complex odor, possible emission of secondary pollutants, and corrosion of equipment.

The above-mentioned deodorizing methods use various deodorizing devices.

Specifically, in the combustion method, a direct combustion device, a regenerative combustion device, and a catalytic combustion device are used; in the adsorption method, a fixed or floating recovery device, a honeycomb type concentrator, and an exchange device are used; and in the biological deodorization method, a soil deodorization device is used. do.

Figure 1 is a diagram showing an adsorption tower for removing malodor according to the prior art, and Figure 2 is a schematic diagram showing a path for removing malodor according to the prior art.

Referring to Figures 1 and 2, the conventional adsorption tower 10 for removing malodor is filled with an adsorbent 15 inside a housing 11 whose upper and lower volumes are equal. To this end, an adsorbent is placed on the upper part of the housing 11. An inlet 12 is formed, and an adsorbent lower discharge port 13 including a suction fan (not shown) is formed in the lower part of the housing 11.

Malodor flowing into the inlet 16 at the bottom of the adsorption tower 10 is treated by the adsorbent 15 and discharged through the outlet 18.

However, the conventional adsorption tower 10 for removing malodor has a simple internal structure, and the time required for malodor to be adsorbed by contacting the adsorbent 15 is insufficient.

Additionally, the flow of malodor is not smooth due to a drop in the pressure of the malodor passing through the adsorbent.

As such, conventional odor removal methods and odor removal devices have various problems such as efficiency of odor removal, high cost of equipment installation, and difficulty in maintenance.

Republic of Korea Patent No. 0949164 Republic of Korea Patent No. 1046214 Republic of Korea Patent No. 1300234 Republic of Korea Patent No. 1510875 Republic of Korea Patent No. 2148168

The present invention was developed in consideration of the above-mentioned problems, and its purpose is to reduce pressure loss and smooth air flow so that the residual odor and residual ozone initially removed in the oxidation tank can be removed through a continuous oxidation reaction in the adsorption tank. The aim is to provide an odor removal device using a parallel adsorption tank for odor removal.

The parallel adsorption tank for removing malodor of the present invention for solving the above problems includes an external housing having an inlet and an outlet; An internal mesh net located inside the outer housing, capable of accommodating an adsorbent inside, having an open inlet at the top, having a mesh shape on the side to allow air to pass through, and having a bracket attached to the top; A bracket having a mesh fixing bar formed at the lower portion to secure the inner mesh net to the lower portion; and a perforated pipe that extends long inside the internal mesh network and has a plurality of air holes formed on the sides, wherein the internal mesh network is filled with an adsorbent, and an internal air flow path is formed inside the perforated pipe. It is characterized in that odor passes through the adsorbent through the air passage.

In the present invention, the bracket has a mesh holder for fixing the internal mesh net at the lower part, an adsorbent inlet perforated up and down at the upper part, an air barrier at the edge, and a pipe holder at the center, and the pipe holder has the above-mentioned A pipe hole into which the perforated pipe is inserted and fixed may be formed.

In the present invention, a space is formed between the outer housing and the inner mesh network to form an external air flow path.

In the present invention, when the bracket to which the internal mesh network is fixed is coupled to the inside of the external housing, an upper space is formed at the top of the external housing, which can serve to maintain air flow and minimize pressure loss.

In the present invention, when the bracket to which the internal mesh network is fixed is coupled to the inside of the external housing, an upper space is formed in the upper part of the external housing, and the upper space can be filled with an adsorbent.

In the present invention, when the bracket to which the internal mesh net is fixed is coupled to the inside of the external housing, an upper space is divided into an upper space and a lower space is divided into a lower space, and an adsorbent is contained in each of the upper space and the lower space. It can be filled.

In the present invention, a plurality of adsorption tanks for removing malodors can be connected in parallel and expanded according to the concentration and amount of malodor generated.

In the present invention, a plurality of adsorption tanks for removing malodor are connected in series, so that they can be expanded according to the concentration and amount of malodor.

The odor removal device of the present invention for solving the above other problems includes an ozone oxidation reaction tank connected to an odor generating source; An adsorption tank connected to the ozone oxidation reaction tank and having an adsorbent therein; and a blower connected to the outlet of the adsorption tank, wherein the ozone oxidation reaction tank includes an oxidation housing, an inlet of the oxidation housing, an outlet of the oxidation housing, and an ultraviolet ray lamp located inside the oxidation housing. The adsorption tank includes an external housing having an inlet and an outlet, an internal mesh network filled with an adsorbent inside the external housing, an external air passage outside the internal mesh network, and an internal air passage inside the internal mesh network, The malodor remaining after removal from the ozone oxidation tank and the ozone generated in the ozone oxidation tank are transferred to the adsorption tank, and the malodor adsorbed on the adsorbent of the adsorption tank is oxidized by ozone.

In the present invention, the adsorbent is a porous ceramic adsorbent, and the porous ceramic adsorbent includes 1 to 2% by weight of carbon nanotubes, 30 to 37% by weight of zeolite, 5 to 7% by weight of gamma alumina, 20 to 25% by weight of bentonite, and silica sol. It can be formed by mixing, molding, drying, and firing 7-10% dextrin, 5-8 weight% water, and 5-9 weight% ethanol.

In the present invention, the adsorption tank may be filled with adsorbent at 40 to 75% of the external housing.

In the present invention, the blower can maintain a final air volume of 4 m ³ /min or more due to pressure loss due to the adsorbent.

In the present invention, the ultraviolet lamp of the oxidation reaction tank is fixed while passing through a hole in the center of the panel, and a photocatalytic coating may be applied to the panel.

The odor removal device of the present invention for solving the above other problems includes an oxidation reaction tank connected to an odor generating source; An adsorption tank connected to the oxidation reaction tank and having an adsorbent therein; and a blower connected to the outlet of the adsorption tank, wherein the oxidation reaction tank includes an oxidation housing, an inlet of the oxidation housing, an outlet of the oxidation housing, and an ultraviolet lamp located inside the oxidation housing, wherein the oxidation reaction tank includes an oxidation housing. The ultraviolet lamp of the reaction tank is fixed while passing through a hole in the center of the panel. A photocatalyst coating is applied to the panel, and the odor remaining after removal from the oxidation reaction tank and the ozone generated in the oxidation reaction tank are transferred to the adsorption tank, and the adsorbent in the adsorption tank It is characterized in that the odor adsorbed is oxidized by ozone.

In the present invention, the photocatalyst coating applied to the panel includes preparing a peptization solution by stirring acetic acid and water; Preparing a precursor solution by stirring titanium tetra isopropoxide (TTIP) and isopropyl alcohol (IPA); Mixing the peptization solution and the precursor solution and performing a hydrolysis and peptization reaction to prepare a colloidal TiO ₂ solution; Preparing a TiO ₂ sol by hydrothermally synthesizing a colloidal TiO ₂ solution in a chamber; A photocatalyst can be prepared by first mixing IPA with the TiO ₂ sol and then adding MTMS (Methyltrimethoxysilane) to react and stirring until it becomes transparent.

According to the present invention, the pressure loss is small and the air flows smoothly due to the internal air flow path and the external air flow path of the adsorption tank for malodor removal, so that bad odor and ozone can be removed through a continuous oxidation reaction in the adsorption tank.

In addition, in the present invention, after the odor is oxidized in an ozone oxidation tank equipped with an ultraviolet lamp, residual ozone and residual odor are transferred to the adsorption tank at the rear stage, so that there is no external leakage.

In addition, in the present invention, the life of the ceramic adsorbent in the adsorption tank is extended by repeated adsorption and oxidation. In the ultraviolet lamp ozone oxidation tank, odorous substances such as ammonia are primary oxidized, and the remaining odorous substances are transferred to an adsorption tank equipped with an adsorbent. At this time, residual ozone generated from the ultraviolet lamp is transported together, and most of it is adsorbed on the adsorbent, oxidizing residual odorous substances inside the adsorbent. This effect extends the life of short-lived ceramic adsorbents.

Figure 1 is a diagram showing an adsorption tower for removing malodor according to the prior art.
Figure 2 is a schematic diagram showing an odor removal route according to the prior art.
Figure 3 is an exploded perspective view showing an adsorption tank for removing malodor according to the first embodiment of the present invention.
Figure 4 is a cross-sectional view showing an adsorption tank for removing malodor according to the first embodiment of the present invention.
Figure 5 is a plan view showing an adsorption tank for removing malodor according to the first embodiment of the present invention.
Figure 6 is a cross-sectional view showing an adsorption tank for removing malodors filled with an adsorbent according to the first embodiment of the present invention.
Figure 7 is a diagram showing the flow of malodor in an adsorption tank for malodor removal according to the first embodiment of the present invention.
Figure 8 is a diagram showing the flow of malodor in parallel connection of a plurality of adsorption tanks for malodor removal according to the first embodiment of the present invention.
Figure 9 is a cross-sectional view showing an adsorption tank for removing malodors filled with an adsorbent according to a second embodiment of the present invention.
Figure 10 is a cross-sectional view showing an adsorption tank for removing malodors filled with an adsorbent according to a third embodiment of the present invention.
Figure 11 is a cross-sectional view showing an adsorption tank for removing malodors filled with an adsorbent according to a fourth embodiment of the present invention.
Figure 12 is a cross-sectional view showing an adsorption tank for removing malodors filled with an adsorbent according to a fifth embodiment of the present invention.
Figure 13 is a schematic diagram showing an ozone oxidation reaction tank according to an embodiment of the present invention.
Figure 14 is a front view showing an ultraviolet lamp installed in an oxidation reaction tank according to an embodiment of the present invention.
Figure 15 is a cross-sectional view of Figure 14.
Figure 16 is a schematic diagram of a porous ceramic adsorbent according to an embodiment of the present invention.
Figures 17 and 18 show deodorization rate test reports for test gases using a porous ceramic adsorbent according to an embodiment of the present invention.
Figure 19 is a photograph showing porous ceramic adsorbents according to an embodiment of the present invention.
Figure 20 is a diagram showing an odor removal device according to an embodiment of the present invention.
Figure 21 is a diagram showing an odor removal device for measuring odor removal efficiency according to an embodiment of the present invention.
Figure 22 is a graph showing data measuring malodor removal efficiency according to an embodiment of the present invention.

Hereinafter, an adsorption tank for removing odor and an odor removal device using the same according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 3 is an exploded perspective view showing an adsorption tank for malodor removal according to a first embodiment of the present invention, Figure 4 is a cross-sectional view showing an adsorption tank for malodor removal according to a first embodiment of the present invention, and Figure 5 is a It is a plan view showing an adsorption tank for removing malodors according to a first embodiment, and Figure 6 is a cross-sectional view showing an adsorption tank for removing malodors filled with an adsorbent according to a first embodiment of the present invention. In Figures 4 and 5, the external housing is not shown for ease of understanding.

Referring to Figures 3 to 6, the adsorption tank 100 for removing malodor of the present invention includes an external housing 110 having an inlet 111 and an outlet 112, located inside the external housing 110, and having an upper portion. There is an internal mesh network 120 to which the bracket 130 is coupled, a mesh fixer 131 is formed at the lower part to fix the internal mesh network 120 downward, and the bracket 130 has a pipe hole 135 in the center. ), and a perforated pipe 140 that is inserted and fixed into the pipe hole 135 of the bracket 130 and forms an internal air passage 145 in the internal mesh network 120.

The external housing 110 has an odor inlet 111 and an odor outlet 112 formed on the side, respectively, and a mesh network inlet 113 is formed inside. The shape of the external housing 110 is cylindrical in the drawing, but can be modified in various ways as needed.

The internal mesh network 120 can accommodate the adsorbent 50 inside, has an open inlet at the top, and has a mesh shape on the side to allow air to pass through. The adsorbent 50 can be injected or removed through an inlet opened at the top of the internal mesh network 120. Specifically, the adsorbent can be injected using a funnel, and the adsorbent can be removed using suction power by operating a vacuum cleaner with the nozzle inserted into the adsorbent.

The bracket 130 has a mesh holder 131 formed at the bottom to fix the internal mesh network 120, an adsorbent inlet 132 perforated up and down is formed, and an air barrier film 133 is formed at the edge. It is done. Additionally, a pipe fixture 134 is formed in the central portion of the bracket 130. A pipe hole 135 into which the perforated pipe 140 is inserted and fixed is formed in the pipe fixture 134, and the pipe fixture 134 is connected to the edge of the bracket with a binding member 136.

The perforated pipe 140 is inserted and fixed into the pipe hole 135 of the bracket 130 and extends into the inner mesh network 120. The perforated pipe 140 is not filled with an adsorbent, so an internal air passage 145 is formed, and a plurality of air holes 141 are formed on the side, which serves to minimize pressure loss while maintaining the flow of air. The drawing shows that four perforated pipes 140 are connected, but the number can be added or subtracted as needed.

Referring to FIG. 6, when the bracket 130 to which the internal mesh network 120 is fixed is coupled to the inside of the external housing 110, a space spaced between the external housing 110 and the internal mesh network 120 is formed. This is formed so that the external air flow path 150 is formed. Due to the air blocking film 133 of the bracket 130, the odor coming from the inlet 111 of the external housing 110 cannot directly pass through the external air passage 150, and the odor filled in the internal mesh network 120 cannot pass through directly. While passing through the adsorbent 50, it can escape into the external air flow path 150.

In addition, when the bracket 130 to which the internal mesh network 120 is fixed is coupled to the inside of the external housing 110, an upper space 115 is formed in the upper part of the external housing 110, which maintains air flow. It serves to minimize pressure loss.

Figure 7 is a diagram showing the flow of malodor in the adsorption tank 100 for malodor removal according to the first embodiment of the present invention.

Referring to FIG. 7, the odor introduced through the odor inlet 111 on the side of the external housing 110 is the internal air passage 145 and the internal mesh of the perforated pipe 140 extending inside the internal mesh network 120. It flows in the direction of the adsorbent 50 filled in the net 120.

The odor passes through contact with each other between the internal air passage 145, the adsorbent 50 filled inside the internal mesh network 120, and the external air passage 150, and the odor is adsorbed on the adsorbent 50 while being blown by a blower (not shown). ) flows to the odor outlet 112. In this way, the odor is linked to the continuous adsorption oxidation removal effect through collision with the internal wall of the adsorption tank 100 and contact with the adsorbent 50, so that the final discharged air contains harmful odor substances below the standard value.

Figure 8 is a diagram showing the flow of malodor in parallel connection of a plurality of adsorption tanks 100 for malodor removal according to the first embodiment of the present invention.

Referring to FIG. 8, a plurality of adsorption tanks 100 for malodor removal can be connected in parallel and expanded according to the concentration and amount of malodor generated.

As described above, the present invention has a small pressure loss and smooth air flow due to the internal mesh network 120, perforated pipe 140, and external housing 110 installed inside the adsorption tank for removing odor, thereby adsorbing odor and ozone. It can be removed by continuous oxidation reaction in the crude oil (100).

Actual test results (refer to actual odor removal efficiency examples described later), when five adsorption tanks 100 are connected in parallel as shown in the drawing, and the maximum air volume of the blower (model TBS-3235S) is 1,560 m ² /h, the internal When the empty adsorption tank was connected and the wind speed was measured using an anemometer, the wind speed was 10.8 m/s.

However, when the five adsorption tanks 100 are filled with 90% of the adsorbent 50 and the wind speed is measured using an anemometer, the wind speed is 0.9 m/s, which significantly reduces the wind speed.

On the other hand, as in the present invention, the external housing 110, internal mesh network 120, bracket 130, and perforated pipe 140 installed inside the adsorption tank 100 are installed and partially filled with 50% adsorbent. When the wind speed was measured later, the wind speed was 5.10 m/s. The diameter of the internal mesh network 120 used in the experiment was 250 mm, and four perforated pipes 140 with a diameter of 4 mm were used.

As a result, partially filling the adsorbent 50 in the adsorption tank 100 for odor removal is advantageous for continuous oxidation reaction of odor and ozone in the adsorption tank 100 because pressure loss is small and air flows smoothly.

The present invention proposes the following various embodiments of a parallel adsorption tank completed by constructing these adsorption tanks in parallel.

Figure 9 is a cross-sectional view showing an adsorption tank 200 for removing malodors filled with an adsorbent according to a second embodiment of the present invention.

Referring to FIG. 9, when the bracket 230 to which the internal mesh network 220 is fixed is coupled to the inside of the external housing 210 in which the odor inlet 211 and the odor outlet 212 are formed, the external housing A space is formed between 210 and the internal mesh network 220, thereby forming an external air flow path 250. Due to the air blocking film 233 of the bracket 230, odor cannot pass directly into the external air passage 250, and passes through the adsorbent 50 filled in the internal mesh network 220 to the external air passage 250. You can escape with .

A perforated pipe 240 having a plurality of air holes extends inside the internal mesh network 220, so that the inside of the perforated pipe 240 is not filled with an adsorbent, thereby forming an internal air passage 245.

Meanwhile, an upper space 215 is defined at the top of the external housing 210, and the adsorbent 50 is separately filled therein. The second embodiment is different from the first embodiment in that the upper space 215 is filled with the adsorbent 50. The size of the upper space 215 is adjustable. In the drawing, the size of the upper space 215 of the second embodiment is larger than that of the first embodiment.

Figure 10 is a cross-sectional view showing an adsorption tank 300 for removing malodors filled with an adsorbent according to a third embodiment of the present invention.

Referring to FIG. 10, when the bracket 330 to which the internal mesh network 320 is fixed is coupled to the inside of the external housing 310 where the odor inlet 311 and the odor outlet 312 are respectively formed, the external housing A space is formed between 310 and the internal mesh network 320, thereby forming an external air flow path 350. Due to the air blocking film 333 of the bracket 330, odor cannot pass directly into the external air passage 350, and passes through the adsorbent 50 filled in the internal mesh network 320 to the external air passage 350. You can escape with .

A perforated pipe 340 having a plurality of air holes extends inside the internal mesh network 320, and the inside of the perforated pipe 340 is not filled with an adsorbent to form an internal air passage 345.

Meanwhile, the outer housing 310 is divided into an upper space 315 at the top and a lower space 317 at the bottom, and the lower space 317 is separately filled with the adsorbent 50. The third embodiment is different from the first embodiment in that the lower space 317 is filled with an adsorbent. The size of the lower space 317 can be adjusted.

Figure 11 is a cross-sectional view showing an adsorption tank 400 for removing malodors filled with an adsorbent according to a fourth embodiment of the present invention.

Referring to FIG. 11, when the bracket 430 to which the internal mesh network 420 is fixed is coupled to the inside of the external housing 410 where the odor inlet 411 and the odor outlet 412 are respectively formed, the external housing A space is formed between 410 and the internal mesh network 420 to form an external air flow path 450. Due to the air blocking film 433 of the bracket 430, odor cannot pass directly into the external air passage 450, and passes through the adsorbent 50 filled in the internal mesh network 420 to the external air passage 450. You can escape with .

A perforated pipe 440 having a plurality of air holes extends inside the internal mesh network 420, so that the inside of the perforated pipe 440 is not filled with an adsorbent, thereby forming an internal air passage 445.

Meanwhile, the outer housing 410 is divided into an upper space 415 at the top and a lower space 417 at the bottom, and these are respectively filled with the adsorbent 50. The fourth embodiment is different from the first embodiment in that the upper space 415 and the lower space 417 are filled with adsorbent. The sizes of the upper space 415 and lower space 417 can be adjusted.

Figure 12 is a cross-sectional view showing an adsorption tank 500 for removing malodors filled with an adsorbent according to a fifth embodiment of the present invention.

Referring to FIG. 12, when the bracket 530 to which the internal mesh network 520 is fixed is coupled to the inside of the external housing 510 where the odor inlet 511 and the odor outlet 512 are respectively formed, the external housing A space is formed between 510 and the internal mesh network 520, thereby forming an external air flow path 550. A perforated pipe 540 having a plurality of air holes extends inside the internal mesh network 520, so that the inside of the perforated pipe 540 is not filled with an adsorbent, thereby forming an internal air passage 545. The fifth embodiment is a structure in which two adsorption tanks are connected in series, and two or more adsorption tanks can be installed as needed. An upper space 515 is formed at the top of the external housing 510.

Hereinafter, an odor removal device using the above-described odor removal adsorption tank will be described.

The odor removal device of the present invention combines the oxidation method and the adsorption method.

The principle of this technology is to generate ozone using an ozone-generating ultraviolet lamp, primary oxidation of the generated ozone by contacting it with incoming odor, and adsorption of the remaining odor and ozone to remove odor with a deodorant installed. Introduce it into the tank and remove it.

The porous ceramic adsorbent located in the odor removal adsorption tank adsorbs odorous substances and is additionally oxidized internally by residual ozone flowing in, thereby reducing shortening of lifespan due to supersaturation.

[Principle of ozone generation by ultraviolet lamp]

Because ozone is an unstable gas, it has a lifespan of about 20 minutes, depending on the temperature. After performing the role of deodorization and sterilization, ozone is reduced to oxygen.

Among ultraviolet lamps, ozone lamps have the same output of germicidal rays (254 nm) as germicidal lamps, but in the present invention, unlike general ultraviolet lamps, they also emit ultraviolet rays of 185 nm, which generate ozone, providing a strong deodorizing effect and reducing the irradiation level that ultraviolet rays cannot reach. Even sterilization of all surfaces is possible.

The chemical formula for oxidizing ammonia and nitrous acid, which are sources of odor, to ozone is as follows.

Additionally, the chemical formula by which hypochlorous acid is oxidized to ozone is as follows.

Additionally, the reaction formula between various odorous substances and ozone is as follows.

In general, ozone generators that generate discharge at high voltage and high frequency simultaneously generate harmful nitrogen compounds in proportion to the amount of ozone, while ozone lamps generate ozone with pure light, so no harmful substances are generated at all.

In addition, while the lifespan of general ozone generators is drastically reduced due to dust and humidity, and safety is reduced due to the use of high voltage, ozone lamps have all functions within a vacuum tube, so their durability is not affected by dust and humidity, and they operate with rated AC power, so they are stable. This is outstanding.

Figure 13 is a schematic diagram showing an ozone oxidation reaction tank according to an embodiment of the present invention.

Referring to FIG. 13, the ozone oxidation reaction tank 70 includes an oxidation housing 71, an inlet 73 of the oxidation housing, an outlet 75 of the oxidation housing, and an ultraviolet ray located inside the oxidation housing 71. Includes lamp 77.

The ultraviolet lamp 77 installed in the oxidation reaction tank 70 is a UV (VH) lamp that simultaneously irradiates wavelengths of 185 nm and 254 nm. The 185nm wavelength stimulates surrounding oxygen to continuously generate ozone, and when in contact with residual odor, it removes odor through an oxidation reaction.

Figure 14 is a front view showing an ultraviolet lamp installed in an oxidation reaction tank according to an embodiment of the present invention, and Figure 15 is a cross-sectional view of Figure 14.

14 and 15, the ultraviolet lamp 77 is fixed to the panel 78. A photocatalytic coating may be applied to panel 78. The shape of the panel 78 to which the photocatalytic coating is applied is a rectangular panel with a hole 79 formed in the center so that the ultraviolet lamp 77 passes through, and it is fixed using a fixing pin on the side of the ozone oxidation reaction tank 70. The ultraviolet lamp 77 simultaneously radiates wavelengths of 185 nm and 254 nm. A wavelength of 254 nm is irradiated to the panel 78 coated with a photocatalyst containing TiO ₂ sol to oxidize and remove residual odor by generating free radicals.

Hereinafter, an example of a method for manufacturing a photocatalyst coated on a panel of an ozone oxidation reaction tank will be described in detail.

First, prepare a peptization solution by stirring acetic acid and water at 0.874:5.56 mol (50 ml: 100 ml). After stirring, refrigerate at 4°C for 2 hours.

Next, prepare a precursor solution by stirring TTIP (Titanium tetra isopropoxide) and IPA (Isopropyl Alcohol) at 0.061:0.235 mol (18 ml: 18 ml). The precursor solution is stirred for 1 hour in an ice bath (filled with ice) and stored in the refrigerator for 1 day, and sealed during stirring.

Next, the peptization solution and the precursor solution are mixed, and hydrolysis and peptization reactions are performed to prepare a colloidal TiO ₂ solution. The colloidal TiO ₂ solution prepared is a 4 nm amorphous titaniazole. The reaction temperature and time are stirred at 80°C until the amount of IPA evaporates, and the IPA is removed by ventilation during stirring.

Next, about 2/3 of the colloidal TiO ₂ solution is placed in a Teflon container and a stainless steel (SUS) hydrothermal synthesis chamber to prepare a crystallized active TiO ₂ sol with a size of 20 nm. The reaction temperature and time are hydrothermal synthesis in a drying chamber at 240°C for 12 hours.

Next, IPA is first mixed with TiO ₂ sol, then MTMS (Methyltrimethoxysilane) is added, reacted, and stirred for about 30 minutes or more until it becomes transparent to prepare a photocatalyst. At this time, the mixing ratio is as shown in Table 1.

Table 1 shows the mixing ratio of TiO ₂ sol, IPA, and MTMS used to prepare the photocatalyst, which is 4:1:2.

TiO ₂ sol 2㎕ MTMS 0.05㎕ IPA 1㎕

The prepared photocatalyst is coated on the panel 78 and cured at 150°C for more than 30 minutes.

[Porous ceramic adsorbent]

The porous ceramic adsorbent is an “adsorption ceramic ball for air purification” and has the effect of adsorbing 99% of harmful substances such as ammonia within 2 hours.

Table 2 shows component ratios (% by weight) for manufacturing a porous ceramic adsorbent according to a preferred embodiment of the present invention.

ingredient carbon nanotube zeolite Gamma Alumina bentonite Silica sol dextrin water ethanol Mixing ratio 1~2 30~37 5~7 20~25 7~10 20~25 5~8 5~9

The porous ceramic adsorbent of the present invention is manufactured by preparing carbon nanotubes, ceramic components, and liquid binder of the components shown in Table 2, mixing, molding, drying, and firing.

Specifically, after mixing the main materials such as carbon nanotubes, zeolite, gamma alumina, and bentonite, liquid binders such as silica sol, dextrin, water, and ethanol are added to form a mixed solution.

Next, the mixture is molded into the shape of a porous ceramic adsorbent using a molding machine.

Next, a drying process is performed to remove ethanol by drying at 100°C or higher for more than 24 hours. As the drying process progresses, the surface of the porous ceramic deodorizer 10 contains macropores with a radius of 1,000 ㎛ or more, mesopores with a radius of about 20 ㎛ to 1,000 ㎛, and micropores with a radius of 20 ㎛ or less. There are various combinations of them. (see Figure 16)

Next, the dried product is fired at 550~650℃ for 5~8 hours while maintaining the temperature for 1 hour.

The size of the porous ceramic adsorbent 10 manufactured in this way is 10 mm or more in diameter, and the specific surface area is 160 to 200 m ² /g.

Figures 17 and 18 show deodorization rate test reports for test gases using a porous ceramic adsorbent according to an embodiment of the present invention.

Referring to Figures 17 and 18, it can be seen that most odor-causing gases such as acetic acid, ammonia, trimetalamine, arylamine, formaldehyde, acetone, styrene, xylene, toluene, acetaldehyde, and pyridine are removed.

The specific test method was to prepare 10 g of porous ceramic adsorbent (see FIG. 19) and analyze the deodorization rates of various test gases twice using a detector tube type gas meter. The test chamber size is 2L, and the injected test gas concentration is 100ppm. The test environment is a temperature of 25℃ and a relative humidity of 52% RH.

Deodorization rate (%) = (initial gas concentration - measured gas concentration) / initial gas concentration × 100 (%)

Figure 20 is a diagram showing an odor removal device according to an embodiment of the present invention.

Referring to Figure 20, the malodor removal device of the present invention combines the oxidation method and the adsorption method, and consists of an ozone oxidation reaction tank (70) connected to the malodor generating source (60) and a parallel adsorption tank (100) for malodor removal. The parallel adsorption tank 100 for malodor removal is briefly shown as an application of the first embodiment of FIG. 6, and adsorption tanks of other embodiments can be applied.

The odor generating source 60 is a place where odor is generated, such as a sewage treatment plant or livestock farm.

The ozone oxidation reaction tank 70 includes an oxidation housing 71, an inlet 73 of the oxidation housing, an outlet 75 of the oxidation housing, and an ultraviolet lamp 77 located inside the oxidation housing 71. Includes.

The ultraviolet lamp (77) generates ozone to remove incoming bad odors in the ozone oxidation reaction tank (70). In the ozone oxidation reaction tank 70, more than 70 to 80% of odorous gas is removed.

The configuration of the parallel adsorption tank 100 for odor removal consists of five units connected in parallel, and the number of connected adsorption tanks 100 can be added or subtracted.

The parallel adsorption tank 100 for odor removal is filled with a porous ceramic adsorbent 50 as described above, and the odor remaining after removal from the ozone oxidation reaction tank 70 and the residue generated in the ozone oxidation reaction tank 70 Ozone is transferred to the parallel adsorption tank 100 for odor removal, and the odor adsorbed on the porous ceramic adsorbent 50 of the adsorption tank 100 is oxidized by residual ozone. In addition, residual ozone is ultimately adsorbed to the porous ceramic deodorizer, so ozone is hardly leaked to the outside.

Meanwhile, a blower 80 is connected to the outlet at the last end of the adsorption tank 100. As described above, an external air passage 150 is formed on the outside of the internal mesh network 120 of the adsorption tank 100, and an internal air passage 145 is formed on the inside, so that odor can move without reducing the pressure of the blower 80. You can.

(Example)

Hereinafter, an experiment regarding the actual odor removal efficiency according to the present invention will be described.

Figure 21 is a diagram showing an odor removal device for measuring odor removal efficiency according to an embodiment of the present invention.

Referring to FIG. 21, as an experimental condition, 12 185nm ultraviolet lamps (77) are applied to the oxidation reaction tank (70), and when 0, 2, 4, 8, and 12 lights are turned on, the absorption tank (100) is filled. Air volume measurement and ammonia measurement were performed by pressure loss that changes depending on the amount of adsorbent (50).

Ammonia was applied to a 200 liter septic tank (65) at about 1 liter of 9% ammonia in 100 liters of water, and stirred at 50 rpm with a stirrer so that the ammonia was degassed at a constant rate and flowed into the odor removal device.

The specifications of the applied blower (80) are as follows, and an input of 880W was applied to the blower model.

The parallel type adsorption tank (100) has a volume of 80L and 5 units were applied (total volume of 400L), and the filling amount of the parallel type adsorption tank (100) is applied to the adsorbent (50) and the perforated pipe (in the internal mesh network (120)). 140) It was applied by adjusting the volume ratio.

At this time, the distance between the blower 80 and the septic tank 65 is 10 m. It is the sum including the length of the adsorption tank (100), the oxidation reaction tank (70), and the connecting pipe.

The ammonia removal rate of the odor removal device according to the lighting of the ultraviolet lamp 77 of the oxidation reaction tank 70 and the filling ratio of the adsorbent 50 of the adsorption tank 100 is shown in the table below.

Referring to the table above, the loss of air volume decreases according to the filling rate of the adsorbent 50, and the amount of ammonia adsorption and oxidation removal increases according to the packing rate of the adsorbent.

Figure 22 is a graph showing data measuring malodor removal efficiency according to an embodiment of the present invention.

Referring to FIG. 22, it is a graph summarizing the change in ammonia concentration in the table above. As the number of UV lamps increases, the amount of ammonia removed from the oxidation reaction tank 70 initially increases.

Considering the pressure loss due to the 10m connecting pipe, when four UV185nm 75w lights in the oxidation reaction tank (70) are turned on, and the filling ratio of the adsorbent (50) in the adsorption tank (100) is 75%, the deodorizing effect range is good. do.

When 8 UV185nm 75w lights in the oxidation reaction tank 70 are turned on, and the filling ratio of the adsorbent 50 in the adsorption tank 100 is 60%, the deodorizing effect range is good.

When 12 UV185nm 75w lights in the oxidation reaction tank 70 are turned on, and the filling ratio of the adsorbent 50 in the adsorption tank 100 is 45%, the deodorizing effect range is good.

In summary, it is appropriate that the inside of the adsorption tank 100 is filled with the adsorbent 50 at 40 to 75%.

The number of UV lamps 77 in the oxidation reaction tank 70 is preferably 8 or more with UV185nm 75w.

The final air volume due to the pressure loss of the blower 80 varies depending on the filling conditions of the adsorbent 50, but is preferably maintained at a minimum of 4 m ³ /min.

The present invention described above is not limited to the above-described drawings and detailed description, but can be modified and modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention as set forth in the claims below. Of course, it is also included within the scope of the present invention.

10: adsorption tower 11: housing
12: Adsorbent upper inlet 13: Adsorbent lower outlet
15, 50: adsorbent 16, 111, 211, 311, 411, 511: inlet
18, 112, 212, 312, 412, 512: outlet 60: odor generating source
70: Oxidized housing 71: Oxidized housing
73: inlet 75: outlet
77: UV lamp 80: Blower
100, 200, 300, 400, 500: Adsorption tank 110, 120, 130, 140, 150: External housing
113: Housing entrance 115, 215, 315, 415, 515: Upper space
120, 220, 320, 420, 520: Internal mesh network 130, 230, 330, 430, 530: Bracket
131: Mesh fixture 132: Absorbent inlet
133, 233, 333, 433: air barrier 134: pipe fixture
135: pipe hole 136: binding member
140: perforated pipe 141: air hole
145, 245, 345, 445, 545: Internal air flow path
150, 250, 350, 450, 550: External air flow path
317, 417: lower space

Claims (5)

An oxidation reaction tank connected to the odor generating source;
An adsorption tank connected to the oxidation reaction tank and having an adsorbent therein; and
It includes a blower connected to the outlet of the adsorption tank,
The oxidation reaction tank includes an oxidation housing, an inlet of the oxidation housing, an outlet of the oxidation housing, and an ultraviolet lamp located inside the oxidation housing,
The adsorption tank includes an external housing having an inlet and an outlet, an internal mesh network filled with an adsorbent inside the external housing and coupled to a bracket at the upper part, and a bracket having a mesh fixing bar at the lower part to fix the internal mesh network at the lower part. ; And a perforated pipe that extends long inside the internal mesh network and has a plurality of air holes formed on the sides,
The internal mesh network is filled with an adsorbent, and an internal air flow path is formed inside the perforated pipe so that odor passes through the adsorbent through the internal air flow path,
The bracket has a mesh fixture for fixing the internal mesh network at the bottom, an adsorbent inlet perforated up and down at the top, an air barrier at the edge, and a pipe fixture at the center, and the perforated pipe is inserted into the pipe fixture. A fixed pipe hole is formed,
Characterized in that a space is formed between the outer housing and the inner mesh to form an external air flow path,
An odor removal device characterized in that the odor remaining after removal from the oxidation reaction tank and the ozone generated in the oxidation reaction tank are transferred to the adsorption tank, and the odor adsorbed on the adsorbent of the adsorption tank is oxidized by ozone. According to paragraph 1,
The adsorbent is a porous ceramic adsorbent,
The porous ceramic adsorbent contains 1 to 2% by weight of carbon nanotubes, 30 to 37% by weight of zeolite, 5 to 7% by weight of gamma alumina, 20 to 25% by weight of bentonite, 7 to 10% by weight of silica sol, 20 to 25% by weight of dextrin, An odor removal device characterized in that it is formed by mixing, molding, drying, and firing 5 to 8% by weight of water and 5 to 9% by weight of ethanol. According to paragraph 1,
The ultraviolet lamp of the oxidation reaction tank is fixed while passing through a hole in the center of the panel, and a photocatalytic coating is applied to the panel. An oxidation reaction tank connected to the odor generating source;
An adsorption tank connected to the oxidation reaction tank and having an adsorbent therein; and
It includes a blower connected to the outlet of the adsorption tank,
The oxidation reaction tank includes an oxidation housing, an inlet of the oxidation housing, an outlet of the oxidation housing, and an ultraviolet lamp located inside the oxidation housing,
The ultraviolet lamp of the oxidation reaction tank is fixed while passing through a hole in the center of the panel, and a photocatalytic coating is applied to the panel.
The adsorption tank includes an external housing having an inlet and an outlet, an internal mesh network filled with an adsorbent inside the external housing and coupled to a bracket at the upper part, and a bracket having a mesh fixing bar at the lower part to fix the internal mesh network at the lower part. ; And a perforated pipe that extends long inside the internal mesh network and has a plurality of air holes formed on the sides,
The internal mesh network is filled with an adsorbent, and an internal air flow path is formed inside the perforated pipe so that odor passes through the adsorbent through the internal air flow path,
The bracket has a mesh fixture for fixing the internal mesh network at the bottom, an adsorbent inlet perforated up and down at the top, an air barrier at the edge, and a pipe fixture at the center, and the perforated pipe is inserted into the pipe fixture. A fixed pipe hole is formed,
Characterized in that a space is formed between the outer housing and the inner mesh to form an external air flow path,
An odor removal device characterized in that the odor remaining after removal from the oxidation reaction tank and the ozone generated in the oxidation reaction tank are transferred to the adsorption tank, and the odor adsorbed on the adsorbent of the adsorption tank is oxidized by ozone. According to paragraph 4,
The photocatalyst coating applied to the panel is,
Preparing a peptization solution by stirring acetic acid and water;
Preparing a precursor solution by stirring titanium tetra isopropoxide (TTIP) and isopropyl alcohol (IPA);
Mixing the peptization solution and the precursor solution and performing a hydrolysis and peptization reaction to prepare a colloidal TiO ₂ solution;
Preparing a TiO ₂ sol by hydrothermally synthesizing a colloidal TiO ₂ solution in a chamber; and
An odor removal device comprising the step of preparing a photocatalyst by first mixing IPA with the TiO ₂ sol, adding MTMS (Methyltrimethoxysilane), reacting, and stirring until it becomes transparent.