KR101507772B1 - Cooling tower having humidity filter - Google Patents

Cooling tower having humidity filter Download PDF

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Publication number
KR101507772B1
KR101507772B1 KR20140019579A KR20140019579A KR101507772B1 KR 101507772 B1 KR101507772 B1 KR 101507772B1 KR 20140019579 A KR20140019579 A KR 20140019579A KR 20140019579 A KR20140019579 A KR 20140019579A KR 101507772 B1 KR101507772 B1 KR 101507772B1
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South Korea
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formed
housing
water vapor
air
vapor filter
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KR20140019579A
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Korean (ko)
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주상현
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경기대학교 산학협력단
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005Apparatus not specifically provided for elsewhere
    • H01L21/67011Apparatus for manufacture or treatment
    • H01L21/67017Apparatus for fluid treatment
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005Apparatus not specifically provided for elsewhere
    • H01L21/67011Apparatus for manufacture or treatment
    • H01L21/67098Apparatus for thermal treatment
    • H01L21/67109Apparatus for thermal treatment mainly by convection

Abstract

In the present invention, disclosed is a cooling tower including a humidity filter which includes a housing which is formed with a barrel shape of an inner hollow part and includes an air inlet to input external air and an air outlet to output the air, a nozzle unit which is located on the upper side of the air inlet in the housing and sprays the used cooling water to the housing, a humidity filter unit which is located on the upper side of the nozzle unit and includes a basic structure with a plurality of pores connected from the outside to the inside and a surface layer which is coated on the surface of the basic structure, and a discharge unit which is located on the air outlet of the housing and discharges the air to the outside of the housing.

Description

[0001] COOLING TOWER HAVING HUMIDITY FILTER [0002]

The present invention relates to a cooling tower comprising a water vapor filter.

The conventional cooling tower is formed as an open type, and uses a method of injecting cooling water used as an inside of the opened housing and cooling the cooling water by introducing outside air. More specifically, the cooling tower injects the used cooling water into the inner space of the housing, introduces outside air to cool the cooling water by bringing the cooling water into contact with the cooling water, and discharges the exhaust air containing the steam back to the outside. Accordingly, since the cooling tower discharges the exhaust air containing steam to the outside in a heated state, the exhaust air condenses with the cold outside air at a relatively low temperature, thereby generating white smoke. The white smoke does not contain harmful substances other than water vapor, but it can be perceived to be harmful in appearance, which affects the surrounding environment and the residential environment. Recently, a method of cooling the exhaust air and discharging it to the outside in order to remove the white smoke has been considered, but it is considered to be ineffective. Therefore, it is necessary to develop a technique for removing the white smoke.

Meanwhile, in the cooling tower, a semiconductor manufacturing plant, a flat panel display device manufacturing plant, or a solar cell manufacturing plant is installed and operated to cool the cooling water used in the process facility.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooling tower including a water vapor filter capable of effectively reducing the occurrence of white smoke when exhaust air is discharged to the outside by effectively collecting and removing steam mist which is a cause of white smoke from exhaust air.

According to an aspect of the present invention, there is provided a cooling tower including a water vapor filter, the housing having a hollow inside and having an air inlet through which external air flows and an air outlet through which exhaust air is discharged; A nozzle unit disposed at an upper portion of the air inlet in the housing and injecting used cooling water into the housing; and a plurality of pores located at an upper portion of the nozzle unit and connected to the inside from the outside, A water vapor filter unit including at least one water vapor filter having a base structure and a surface layer coated on a surface of the base structure; and a discharge unit located at an air discharge port of the housing, the discharge unit discharging the discharge air to the outside of the housing And a control unit.

At this time, the surface layer may include a phosphate compound represented by the following structural formula (1) containing a CF (fluorocarbon) group or a CH (hydrocarbon) group.

The structural formula (1)

Figure 112014016647306-pat00001
or
Figure 112014016647306-pat00002

(Where n is 4 to 25).

Further, the surface layer may include a silane-based compound represented by the following structural formula (2) containing a CF (fluorocarbon) group or a CH (hydrocarbon) group.

Structural formula (2)

Figure 112014016647306-pat00003
or
Figure 112014016647306-pat00004

(Where n is 4 to 25).

In addition, the surface layer may be formed of HDF-S, OD-PA or HDF-PA.

The base structure may be formed of nickel, aluminum, stainless steel, monel, inconel, tungsten, silver titanium, molybdenum, duplex, copper, iron, polyester, nylon, polyethylene, polypropylene or fiberglass. Also, the basic structure may be formed to have a pore size of 5 mu m to 1000 mu m. Also, the basic structure may be formed in a three-dimensional porous shape, a two-dimensional mesh shape, or a three-dimensional mesh shape in which two or more two-dimensional mesh shapes are laminated.

The water vapor filter may further include an interface layer formed between the base structure and the surface layer. At this time, the interface layer may be formed of graphene, graphen oxide, metal oxide, or a mixture thereof. In addition, the interface layer may be formed with a hydroxyl group (-OH) or a carboxyl group (-COOH) through plasma treatment or UVO treatment.

In addition, the interface layer may be formed of a metal oxide or a mixture thereof, and the interface layer may be formed by forming a metal (-M) on the surface and magnetically coupling with the surface layer. In this case, the metal oxide is Ti x O y, Fe x O y, Al x O y, Si x O y, Sn x O y, Zn x O y, In x O y, Ce x O y or Zr x O y May be any one selected from the group consisting of metal oxides.

In addition, the cooling tower including the water vapor filter of the present invention may further include a filler layer positioned between the nozzle unit and the air inlet of the housing.

In addition, a plurality of steam filter units may be arranged in the horizontal direction inside the housing. In addition, a plurality of the steam filter units may be formed in an inclined manner in the interior of the housing. In addition, the steam filter unit may be formed such that two V-shaped or 형상-shaped V-shaped or 형상-shaped portions are continuously arranged.

Further, the steam filter unit may be located between the nozzle unit and the discharge unit, or above the discharge unit.

The cooling tower including the water vapor filter of the present invention effectively collects the steam mist contained in the exhaust air discharged to the outside and is not discharged to the outside, thereby reducing the occurrence of white smoke.

The cooling tower including the water vapor filter of the present invention can recover water mist contained in the exhaust air and reuse it, thereby reducing water consumption or replenishing amount of the cooling tower.

1 is an enlarged view of a surface of a water vapor filter according to an embodiment of the present invention.
2 is a partial cross-sectional view of a water vapor filter according to an embodiment of the present invention.
3A is a schematic vertical cross-sectional view of a cooling tower including a water vapor filter according to one embodiment of the present invention.
FIG. 3B is a vertical sectional view of a water vapor filter unit included in a cooling tower including the water vapor filter of FIG. 3A.
4A and 4B are photographs showing evaluation results of the water permeability of a water vapor filter and a general nickel foam according to an embodiment of the present invention.
5A and 5B are photographs showing evaluation results of water vapor permeability of a water vapor filter and a general nickel foam according to an embodiment of the present invention.

Hereinafter, a cooling tower including the water vapor filter of the present invention will be described in more detail with reference to embodiments and accompanying drawings.

First, a water vapor filter used in a cooling tower including a water vapor filter according to an embodiment of the present invention will be described.

1 is an enlarged view of a surface of a water vapor filter according to an embodiment of the present invention. 2 is a partial cross-sectional view of a water vapor filter according to an embodiment of the present invention.

1 and 2, the water vapor filter 100 is formed to include a base structure 110 and a surface layer 130. The water vapor filter 100 may further include an interface layer 120.

The steam filter 100 has a feature that the surface layer 130 repels water vapor mist of the saturated air and collects the steam mist. The steam filter includes the surface layer 130, which is included in the saturated air passing through the pores of the basic structure 110 Water-repellent water vapor mist is flowed down to the bottom to be removed. Here, the characteristic of the steam filter 110 to collect steam mist is that water vapor mist that the surface layer 130 hits against the surface is repellent to generate water droplets of a predetermined size or larger on the surface, and the generated water droplets slip downward . In addition, since the water vapor filter 100 quickly removes water droplets caused by the steam mist trapped by the surface layer 130, the pores are not blocked so that the saturated air can be continuously passed through. Accordingly, the steam filter 100 collects and blocks the steam mist contained in the saturated air when the saturated air passes, thereby preventing the occurrence of white smoke when the exhaust air comes into contact with the outside air.

Hereinafter, the saturated air means the air before completely passing through the steam filter 100, the air having high humidity generated by the contact of the used cooling water with the outside air and the air located inside the steam filter 100, Means air containing mist. The saturated air also includes air having a humidity of less than 100%. Here, the steam mist refers to fine water particles generated when the used cooling water comes into contact with external cold air. In addition, the exhaust air means air having passed through the steam filter 100 and having steam mist removed. However, the exhaust air may also mean air having a smaller amount of steam mist than saturated air, although the steam mist is not completely removed.

The basic structure 110 is formed of a three-dimensional porous foam including a plurality of pores connected from the outside to the inside. In other words, the basic structure 110 is formed into a plate or block shape having a predetermined thickness and area , And a plurality of pores connected from the surface to the inside. In addition, the basic structure 110 is formed such that the pores existing therein are connected to each other and the pores existing on the surface are opened. Accordingly, the main structural body 110 is formed with a passage which is connected from one side to the other side by pores.

In addition, the basic structure 110 may be formed in a two-dimensional mesh shape by a mesh net in which a plurality of pores (or through holes) formed by weaving a wire into a plate-like mesh is formed. Also, the basic structure 110 may have a structure in which a plurality of pores (or through holes) are formed in a lattice shape on a flat plate. When the basic structure 110 is formed in a plate shape, two or more of the basic structures 110 may be laminated while being in contact with or spaced from each other to be formed into a three-dimensional mesh shape.

delete

The basic structure 110 may be formed of a material such as metal, plastic, or ceramic. The basic structure 110 is formed of a metal such as nickel, aluminum, stainless steel, monel, inconel, tungsten, silver, titanium, molybdenum, duplex copper or iron with excellent corrosion resistance, Can be formed of a good nickel metal. In addition, the base structure 110 may be formed of polyester, nylon, polyethylene, polypropylene, or fiberglass.

Meanwhile, the base structure 110 may be formed by annealing when formed of a metal. When the base structure 110 is annealed, the surface layer 130 is bonded to the metal oxide formed on the surface of the base structure 110, so that the bonding force can be increased. At this time, The metal may be annealed according to conventional annealing conditions depending on the material.

The basic structure 110 is preferably formed to have a pore size of 5 mu m to 1,000 mu m. If the pore size of the basic structure 110 is too small, water droplets are not smoothly removed after trapping the steam mist, so that the pores are clogged and the saturated air can not pass smoothly. Also, if the pore size of the basic structure 110 is too small, the pressure loss of the cooling fan for discharging the saturated air may be caused, and the saturated air may not be smoothly discharged. Also, if the size of the pore is too large, the steam mist can not be effectively trapped and blocked.

The interface layer 120 is formed of a metal oxide, graphene or graphen oxide. The metal oxide may be Ti x O y , Fe x O y , or Al x O y . The metal oxide may be any metal oxide selected from the group consisting of Si x O y , Sn x O y , Zn x O y , In x O y , Ce x O y , and Zr x O y , Lt; / RTI > In addition, the interface layer 120 may be formed of a metal oxide formed by oxidizing the surface of the metal base structure 110 when the basic structure 110 is formed of metal. In this case, the interface layer 120 can be strongly bonded to the surface of the base structure 110. In addition, the interface layer 120 may be formed by oxidizing metal particles after they are coated on the surface of the base structure 110. The interface layer 120 is coated on the surface of the base structure 110. Here, the surface of the basic structure 110 refers to a surface to which external air comes into contact, and includes the inner surface of the pores formed inside and the outer surface of the basic structure 110.

When the interface layer 120 is formed of a metal oxide, a coating solution containing nanoparticles of metal oxide may be formed by coating by dip coating, spin coating, or spray coating. In addition, the interface layer 120 may be formed by coating a metal salt solution containing a metal component of a metal oxide on the surface of the base structure 110 by a spin coating or a dipping coating method, The metal salt may be formed by oxidation. The interface layer 120 may be formed of an oxide by sputtering, atmospheric plasma, atomic layer deposition, chemical vapor deposition, or electron beam deposition (E-beam deposition). . In addition, the interface layer 120 may be formed by oxidizing the surface of the basic structure 110 formed of a metal.

The interface layer 120 may have a large number of hydroxyl groups (-OH) or carboxyl groups (-COOH) on its surface. The interface layer 120 may be formed with a hydroxyl group (-OH) or a carboxyl group (-COOH) by a surface treatment such as plasma treatment using plasma such as O 2 plasma or ultraviolet / Ozone treatment. The interface layer 120 may be formed by a chemical treatment method of spraying or applying a chemical substance containing a hydroxyl group (-OH) or a carboxyl group (-COOH) onto the upper surface of the interface layer 120, (-COOH) may be formed. For example, when the interface layer 120 is formed of a silica nanofiber layer, a large number of hydroxyl groups (-OH) may be formed on the surface by hexachlorosiloxane applied to the surface of the silicon oxide.

In addition, when the interface layer 120 is formed of a metal oxide, a plurality of metal (M-) or oxygen ion groups (-O) may be formed on the surface. At this time, the interface layer 120 may be plasma-treated to form a metal on the surface. On the other hand, when the interface layer 120 is formed of a metal or a metal oxide, a metal (M-) or an oxygen ion group (-O) may naturally exist on the surface without further processing.

The interface layer 120 increases the bonding force between the surface of the basic structure 110 and the surface layer 130 and reduces the partial separation of the surface layer 130 from the basic structure 110 so that the life of the water vapor filter 100 . Therefore, when the bonding force between the surface layer 130 and the surface of the basic structure 110 is sufficient, the interface layer 120 may be omitted. In addition, the interface layer 120 may be omitted because the coupling strength with the surface layer 130 increases when the base structure 110 is annealed while being formed of a metal.

Meanwhile, the interface layer 120 may be partially formed on the surface of the base structure 110. That is, the interface layer 120 may be formed such that the surface of the basic structure 110 is partially exposed. For example, the interface layer 120 may be formed by partially coating the surface of the base structure 110 with metal or metal oxide nanoparticles, or the surface of the base structure 110 may be partially oxidized . In this case, the interface layer 120 may be formed to be mixed with the surface layer 130.

The surface layer 130 is formed by coating on the surface of the base structure 110. The surface layer 130 is coated on the upper surface of the interface layer 120 when the interface layer 120 is formed. Also, the surface layer 130 collects the steam mist to form a water droplet, and the water droplet is rapidly flowed and removed.

The surface layer 130 may include a phosphoric acid compound including CF (fluorocarbon) or CH (hydrocarbon). The phosphate-based compound may be formed of a phosphate-based compound represented by the following structural formula (1). The surface layer 130 may be formed of a phosphonic acid monolayer (phosphonic acid SAMs). The phosphonic acid self-assembled monolayer may be (1H, 1H, 2H, 2H-heptadecafluorodec-1-yl) phosphonic acid (HDF-PA) or octadecylphosphonic acid (OD-PA).

The structural formula (1)

Figure 112014016647306-pat00005
or
Figure 112014016647306-pat00006

(Where n is 4 to 25).

The surface layer 130 is formed by coating the surface of the base structure 110 or the interface layer 120 with the phosphate compound dissolved in an alcohol solvent such as ethanol. At this time, the phosphoric acid compound is dissolved in a solvent at a concentration of 0.1 to 10 mM, preferably at a concentration of 1 to 3 mM. If the concentration of the phosphate compound is too low, the surface layer 130 having a sufficient thickness may not be formed. Also, if the concentration of the phosphate compound is too high, the self-assembly saturates, meaning that the concentration is not high and the material consumption can be increased only.

The surface layer 130 may be formed of a metal having a phosphate group of a phosphate compound coordinated with a metal group (-M) or an oxygen ion group (-O) of the interface layer 120 through magnetic coupling when the interface layer 120 is coated. May be formed as a self-assembled monolayer. Since the phosphoric acid group of the phosphate compound maintains a stable state in the atmosphere, the coating process can proceed in the atmosphere.

In the case where the surface layer 130 is formed of a phosphate compound according to the structural formula (1), the interface layer 120 is preferably formed of a metal oxide. When the surface layer 130 is formed of a phosphoric acid compound, the phosphate group may be combined with the metal group of the metal oxide to increase the bonding force. The metal oxide may be Ti x O y , Fe x O y , or Al x O y . The metal oxide may be any metal oxide selected from the group consisting of Si x O y , Sn x O y , Zn x O y , In x O y , Ce x O y and Zr x O y , Lt; / RTI >

The surface layer 130 is formed by coating a silane-based compound containing a CF (fluorocarbon) group or a CH (hydrocarbon) group. The silane-based compound may be formed from a compound represented by the following structural formula (2). The surface layer 130 may be formed of a trichlorosilane SAM. The trichlorosilane magnetic bonded monolayer may be (heptadecafluoro-1,1,2,2-tetrahydrodecyl) trichlorosilane (HDF-S).

Structural formula (2)

Figure 112014016647306-pat00007
or
Figure 112014016647306-pat00008

(Where n is 4 to 25).

The surface layer 130 may be formed by coating the surface of the base structure 110 or the interface layer 120 with the silane compound dissolved in a solvent such as anhydrous toluene. At this time, the silane compound is dissolved in a solvent at a concentration of 0.1 to 10 mM, preferably at a concentration of 1 to 3 mM. If the concentration of the silane compound is too low, the surface layer 130 having a sufficient thickness may not be formed. If the concentration of the silane compound is too high, the thickness of the surface layer 130 may be unnecessarily increased or the thickness thereof may be difficult to control.

The surface layer 130 is formed by self-assembling (curing) in which the silane group of the silane compound is covalently bonded to the hydroxyl group (-OH) or the carboxyl group (-COOH) of the interfacial layer 120 by dehydration reaction when the interfacial layer 120 is coated self-assembled monolayer can be formed. Meanwhile, since the silane group of the silane compound proceeds rapidly in the atmosphere, the silane group can proceed in a nitrogen atmosphere in order to control the reaction rate. Since the surface layer 130 is covalently bonded to the interface layer 120, the bonding force is improved. The surface layer 130 may be formed by bonding with a metal or oxygen ion group existing on the surface of the interface layer 130, even if no hydroxyl group or carboxyl group is present in the interface layer 120.

The surface layer 130 may be formed by coating a coating liquid containing the above-mentioned materials by dipping coating, spin coating, or spray coating.

Next, a cooling tower including a water vapor filter according to an embodiment of the present invention will be described.

3A is a schematic vertical cross-sectional view of a cooling tower including a water vapor filter according to one embodiment of the present invention. FIG. 3B is a vertical sectional view of a water vapor filter unit constituting a cooling tower including the water vapor filter of FIG. 3A.

3A and 3B, a cooling tower 200 including a water vapor filter according to an embodiment of the present invention includes a housing 210, a nozzle unit 220, a water vapor filter unit 230, and a discharge unit 240). The cooling tower 200 may further include a filler layer 250.

In the cooling tower 200, when the discharge unit 240 is operated, external air having a relatively low temperature flows into the interior of the housing 210 from the lower portion thereof to flow upward, and the used cooling water . The cooling water falls down and cools while being in contact with the introduced outside air. The outside air is changed into saturated air containing steam mist while being in contact with the falling cooling water, and flows to the steam filter unit 230. The steam filter unit 230 collects steam mist contained in the saturated air and drops downward in a water droplet state. The saturated air passes through the water vapor filter unit 230 and the steam mist is removed to be discharged air. The discharged air passes through the discharge unit 240 and is discharged to the outside of the housing 210. Since the exhaust air is in a low humidity state due to the removal of the steam mist, the generation of white smoke is reduced when the exhaust air comes into contact with the outside air having a relatively low temperature. In addition, since the steam mist of the saturated air is collected and collected as water droplets, the amount of the cooling water evaporated during the cooling process is reduced to reduce the consumption amount or the replenishment amount of the cooling water.

The housing 210 may be formed in a polygonal tubular shape such as a hollow cylindrical shape, a rectangular tubular shape, or a hexagonal tubular shape. The housing 210 has an air inlet 211 through which the outside air flows into the lower portion and an air outlet 212 through which the outlet unit 240 is mounted. In the housing 210, a nozzle unit 220 and a water vapor filter unit 230 are located, and a discharge unit 240 is located on the upper part. The housing 210 may be formed with a water collection tank 213 in which a lower portion thereof is hermetically sealed to collect cooling water sprayed from the nozzle unit 220. The housing 210 may be a housing of a general cooling tower.

The nozzle unit 220 includes a nozzle pipe 221 and an injection nozzle 222. The nozzle unit 220 is disposed in a plane at a mid-height position of the housing 210. The nozzle unit 220 is installed to be positioned above the air inlet of the housing. Meanwhile, the nozzle unit 220 may be a nozzle unit used in a general cooling tower. The nozzle unit 220 injects cooling water supplied from the outside into the nozzle pipe 221 through the injection nozzle 222 into the housing 210. The nozzle unit 220 is used in a facility and ejects used cooling water which is relatively high in temperature and needs to be cooled. The nozzle unit 220 may inject cooling water into the upper portion of the filler layer 250 when the filler layer 250 is formed.

The nozzle pipe 221 is formed of a plurality of hollow tubes. In addition, the nozzle pipe 221 is formed such that a plurality of pipes are spaced apart from each other by a predetermined distance, and the inside of the nozzle pipe 221 is entirely connected. In addition, the nozzle pipe 221 may be formed in a radial shape or a lattice shape. One end of the nozzle pipe 221 is connected to an external cooling water inflow pipe (not shown) and receives cooling water through a cooling water inflow pipe.

The injection nozzle 222 is formed in a tubular shape having a relatively small area at an end thereof and is coupled to a lower portion of the nozzle pipe 221 at regular intervals. The injection nozzle 222 injects the cooling water supplied from the nozzle pipe 221 downward. The injection nozzle 222 may be formed of a spray nozzle used in a general cooling tower. Meanwhile, the injection nozzle 222 may be a hole formed in the nozzle pipe 221 itself without a separate nozzle.

The steam filter unit 230 is formed in a plate shape having a predetermined area and includes at least one steam filter 100. The steam filter 100 is formed of the steam filter according to the above-described FIG. 1 to FIG. The water vapor filter unit 230 is formed to be positioned above the nozzle unit 220, and the saturated air flowing through the nozzle unit 220 flows in and passes through the nozzle unit 220. The steam filter unit 230 collects steam mist contained in the saturated air. The steam filter unit 230 may be formed on the discharge unit 240.

The steam filter unit 230 is formed such that at least one steam filter 100 is supported by a separate support block 232. Meanwhile, the steam filter unit 230 may be formed by being connected to each other only by the steam filter, not by the support block 232, when the steam filter has sufficient strength. At least one of the steam filter units 230 is arranged and fixed to the upper portion of the nozzle unit 220 in the interior of the housing 210. At this time, the steam filter unit 230 has one or a plurality of steam filter units 230 so as to cover the entire horizontal area inside the housing 210 according to the area. The water vapor filter unit 230 is preferably formed of a plurality of water vapor filter units. If a plurality of steam filter units 230 are formed, only the steam filter unit 230 in which the internal pores of the steam filter are clogged can be replaced even if there is a problem during use.

The steam filter unit 230 is formed of at least one layer and is installed to be horizontal. The water vapor filter unit 230 may be formed of two or more layers depending on the water vapor mist trapping performance of the water vapor filter 100 or the ventilation performance of the water vapor filter. For example, when the amount of steam mist to be collected by the steam filter 100 is large, the steam filter unit 230 can be installed in two or more layers. Also, even when the ventilation performance of the steam filter is high, the steam filter unit 230 can be installed in two or more layers for more efficient collection of steam mist. Here, the ventilation performance means the performance of passing the air through the steam filter 100, and the lower ventilation performance means that the saturated air can not pass smoothly.

In addition, the steam filter unit 230 may be inclined with respect to the horizontal direction. For example, the water vapor filter unit 230 has two V-shaped, 형상-shaped, or similar shapes with respect to the vertical cross section of the housing 210, and is arranged such that a V-shape or a 형상-shape is continuously formed . When the steam filter unit 230 is inclined, the area in which the steam filter 100 is in contact with the saturated air is increased to increase the collection efficiency of the steam mist. In addition, since the area of the steam filter unit 230 is increased, the ventilation performance for the saturated air is increased. The water vapor filter unit 230 increases the area of the steam filter as the inclination angle increases with respect to the horizontal direction, thereby increasing the collection efficiency of the steam mist.

The discharge unit 240 is formed to include a motor 241 and a discharge fan 242. The discharge unit 240 may further include a discharge pipe 243. The exhaust unit 240 is connected to an air outlet 212 at an upper portion of the housing 210 to discharge the exhaust air passing through the steam filter unit 230 to the outside of the housing 210. The discharge unit 240 may be formed as a discharge unit used in a general cooling tower.

The motor 241 is used as a motor used in a general cooling tower, and is coupled to an air outlet 212 by a separate support member. Meanwhile, the motor is located outside the housing and may be configured to rotate the discharge fan 242 by power transmission means (not shown) such as a belt.

The discharge fan 242 is connected to the motor 241 by a rotating shaft and is rotated by a motor 241. The exhaust fan 242 discharges the exhaust air to the outside of the housing 210.

The discharge pipe 243 is formed in a cylindrical shape having upper and lower openings and is coupled to the air outlet 212 of the housing 210. The discharge pipe 243 supports the motor 241 and the discharge fan 242 installed therein.

The filler layer 250 is filled with a filler (not shown) having a plurality of pores therein. The filler material is made of a filler material used in a general cooling tower. The filler layer 250 is installed in the interior of the housing 210 between the nozzle unit 220 and the air inlet 211. The filler layer 250 is formed to have a horizontal area corresponding to the horizontal cross-sectional area of the housing 210. The filler layer 250 is formed so that the external air flowing from the air inlet passes and flows upward. In addition, the filler layer 250 causes the cooling water injected from the nozzle unit 220 to temporarily fall down after falling on the surface of the filler material, thereby increasing the dropping time of the cooling water. Accordingly, the filler layer 250 can increase the time and amount of contact between the cooling water and the outside air, thereby effectively cooling the cooling water.

The following is a description of characteristics evaluation results of a steam filter according to an embodiment of the present invention.

In this evaluation, the basic structure with the average pore size of 3.0 mm and the thickness of 5 mm and the basic structure with the average pore size of 0.45 mm and the thickness of 1.60 mm were used. In addition, the basic structure is made of nickel and has a three-dimensional porous foam shape. In addition, the basic structure was annealed in an oxygen atmosphere so that a metal oxide layer was formed on the surface. In addition, the basic structure was subjected to UVO treatment on the surface to increase the wettability of the surface layer coated on the surface. Meanwhile, HDF-PA was mixed with isopropyl alcohol (IPA) for surface layer coating on the surface of the basic structure to prepare a surface layer solution having a concentration of 2 mM. The basic structure was immersed in the standard solution for 1 hour. On the surface of the basic structure, a surface layer of HDF-PA was formed by a magnetic coupling reaction and was fabricated as a steam filter. The steam filter was sequentially washed with IPA and pure water to remove the unreacted HDF-PA, and was sprayed with air to dry.

In the following, the water passage degree of the steam filter was evaluated. Water and nitrogen gas were jetted together with an air spray nozzle on the front surface of the water vapor filter and a general nickel foam (i.e., a basic structure without a surface layer coated). The injection speed of water was 3 m / s. As shown in FIG. 4A, the general nickel foam can be seen that the front surface is blocked by the water to be sprayed, and then the water is gradually absorbed and flowed to the back surface. However, as shown in FIG. 4B, the water vapor filter does not absorb water from the front surface but flows out from the surface, and water does not flow to the back surface.

In addition, the degree of passing water droplets was evaluated in place of the water vapor mixed with the yellow dye on the surface of the ordinary nickel foam and the water vapor filter. The common nickel foam passes through the water without interrupting the water when the dye-containing water is sprayed. As shown in FIG. 5A, the ordinary nickel foam has no yellow dye observed on the surface to which water is sprayed. Therefore, it can be seen that the general nickel foam has no function of blocking water. However, the water vapor filter does not allow water to pass through when the yellow dye-containing water is sprayed. As shown in FIG. 5B, the water vapor filter can confirm that yellow dye is present on the surface where water is sprayed. Therefore, it can be seen that the steam filter has a function of blocking water from water vapor.

100: Water vapor filter
110: basic structure 120: interfacial layer
130: surface layer
200: Cooling Tower
210: housing 220: nozzle unit
230: water vapor filter unit 240: exhaust unit

Claims (19)

  1. delete
  2. A housing having a hollow inner shape and having an air inlet through which outside air flows and an air outlet through which exhaust air is discharged;
    A nozzle unit disposed in the interior of the housing at an upper portion of the air inlet and injecting used cooling water into the housing,
    A water vapor filter unit including at least one water vapor filter disposed on the nozzle unit and having a base structure including a plurality of pores connected from the outside to the inside and a surface layer coated on a surface of the base structure;
    And a discharge unit located at an air discharge port of the housing and discharging the discharge air to the outside of the housing,
    Wherein the surface layer comprises a phosphoric acid-based compound represented by the following structural formula (1) containing a CF (fluorocarbon) group or a CH (hydrocarbon) group.
    The structural formula (1)
    Figure 112015015976457-pat00009
    or
    Figure 112015015976457-pat00010

    (Where n is 4 to 25).
  3. A housing having a hollow inner shape and having an air inlet through which outside air flows and an air outlet through which exhaust air is discharged;
    A nozzle unit disposed in the interior of the housing at an upper portion of the air inlet and injecting used cooling water into the housing,
    A water vapor filter unit including at least one water vapor filter disposed on the nozzle unit and having a base structure including a plurality of pores connected from the outside to the inside and a surface layer coated on a surface of the base structure;
    And a discharge unit located at an air discharge port of the housing and discharging the discharge air to the outside of the housing,
    Wherein the surface layer comprises a silane-based compound represented by the following structural formula (2) containing a CF (fluorocarbon) group or a CH (hydrocarbon) group.
    Structural formula (2)
    Figure 112015015976457-pat00011
    or
    Figure 112015015976457-pat00012

    (Where n is 4 to 25).
  4. 3. The method of claim 2,
    Wherein the surface layer is formed of OD-PA or HDF-PA.
  5. The method according to claim 2 or 3,
    Wherein the base structure is formed of nickel, aluminum, stainless steel, monel, inconel, tungsten, silver titanium, molybdenum, duplex, copper, iron, polyester, nylon, polyethylene, polypropylene or fiberglass. Included cooling towers.
  6. The method according to claim 2 or 3,
    Wherein the basic structure is formed to have a pore size of 5 mu m to 1000 mu m.
  7. The method according to claim 2 or 3,
    Wherein the basic structure is formed in a three-dimensional mesh shape in which a three-dimensional porous foam shape, a two-dimensional mesh shape, or two or more two-dimensional mesh shapes are laminated.
  8. The method according to claim 2 or 3,
    Wherein the water vapor filter further comprises an interface layer formed between the base structure and the surface layer.
  9. 9. The method of claim 8,
    Wherein the interface layer is formed of graphene, graphene oxide, a metal oxide, or a mixture thereof.
  10. 9. The method of claim 8,
    Wherein the interface layer is formed with a hydroxyl group (-OH) or a carboxyl group (-COOH) through plasma treatment or ultraviolet / ozone (UVO) treatment.
  11. The method of claim 8, wherein
    Wherein the interface layer is formed of a metal oxide or a mixture thereof,
    Wherein the interface layer is formed of a metal (-M) on its surface and is magnetically coupled to the surface layer.
  12. 10. The method of claim 9,
    The metal oxide may be composed of Ti x O y , Fe x O y, Al x O y , Si x O y , Sn x O y , Zn x O y , In x O y , Ce x O y, or Zr x O y . Wherein at least one of the metal oxides is selected from the group consisting of a metal oxide and a metal oxide.
  13. The method according to claim 2 or 3,
    Further comprising a filler layer positioned between the nozzle unit and the air inlet of the housing.
  14. The method according to claim 2 or 3,
    Wherein the water vapor filter unit comprises a plurality of water vapor filter units arranged horizontally inside the housing.
  15. The method according to claim 2 or 3,
    Wherein the water vapor filter unit comprises a plurality of water vapor filter units formed to be inclined in the interior of the housing.
  16. The method according to claim 2 or 3,
    Wherein the water vapor filter unit comprises two water vapor filter units arranged in a V shape or a V shape or a V shape or a V shape.
  17. The method according to claim 2 or 3,
    Wherein the water vapor filter unit is located between the nozzle unit and the discharge unit or above the discharge unit.
  18. The method of claim 3,
    Wherein the surface layer is formed of HDF-S.
  19. 12. The method of claim 11,
    The metal oxide may be composed of Ti x O y , Fe x O y, Al x O y , Si x O y , Sn x O y , Zn x O y , In x O y , Ce x O y, or Zr x O y . Wherein at least one of the metal oxides is selected from the group consisting of a metal oxide and a metal oxide.
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Publication number Priority date Publication date Assignee Title
KR20170049694A (en) * 2015-10-27 2017-05-11 경기대학교 산학협력단 Cooling tower having humidity filter
KR101826106B1 (en) * 2017-09-25 2018-02-06 (주)와이엠테크 Removal device of plume for horizontal flow cooling tower
KR20180104254A (en) * 2017-03-10 2018-09-20 경기대학교 산학협력단 Cooling Tower Reducing Generation of White Plume
KR101976330B1 (en) 2018-10-31 2019-05-08 (주)와이엠테크 Cooling tower for abating noise and white smoke

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KR20110046230A (en) * 2010-04-15 2011-05-04 (주)디알씨엔씨 Biofilter, Harmful Substance Removal Device and Removal Method Using the Same
KR20120046669A (en) * 2010-10-29 2012-05-10 정순우 Apparatus for preventing white plume and cooling tower with the same
KR20130080451A (en) * 2010-06-01 2013-07-12 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Coated porous materials

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KR20070077530A (en) * 2006-01-24 2007-07-27 (주)하멜 Recovery system and method of cooling water at cooling tower
KR20110046230A (en) * 2010-04-15 2011-05-04 (주)디알씨엔씨 Biofilter, Harmful Substance Removal Device and Removal Method Using the Same
KR20130080451A (en) * 2010-06-01 2013-07-12 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Coated porous materials
KR20120046669A (en) * 2010-10-29 2012-05-10 정순우 Apparatus for preventing white plume and cooling tower with the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170049694A (en) * 2015-10-27 2017-05-11 경기대학교 산학협력단 Cooling tower having humidity filter
KR101884212B1 (en) * 2015-10-27 2018-08-02 경기대학교 산학협력단 Cooling tower having humidity filter
KR20180104254A (en) * 2017-03-10 2018-09-20 경기대학교 산학협력단 Cooling Tower Reducing Generation of White Plume
KR101958917B1 (en) * 2017-03-10 2019-03-19 (주)와이엠테크 Cooling Tower Reducing Generation of White Plume
KR101826106B1 (en) * 2017-09-25 2018-02-06 (주)와이엠테크 Removal device of plume for horizontal flow cooling tower
KR101976330B1 (en) 2018-10-31 2019-05-08 (주)와이엠테크 Cooling tower for abating noise and white smoke

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