JP2004202306A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner which is simple in structure and can efficiently clean contaminants in exhaust gas. <P>SOLUTION: The exhaust gas 17 is supplied into an air blowing pipe 15 by using a blower 16 of an air blowing device 4, made a horizontal flow, and fed inside from a vent hole 5 formed in the outer shell 3 of an air cleaner main body 2. The exhaust gas 17 fed in the outer shell 3 ascends and passes through a first filler 10. A liquid agent 11 sprayed from a first spray nozzle 9 adheres to the first filler 10, and a water film is formed on the surface. The exhaust gas 17 is efficiently brought into vapor-gas contact with the water film, and the contaminants in the gas 17 are transferred. The ascended exhaust gas 17 is directly contacted with the liquid agent 11 which is sprayed again from the first spray nozzle 9, and the residual contaminants are transferred and purified. After that, the purified exhaust gas 17, after droplets by the liquid agent 11 are caught by a first demister 7, is discharged outside from an opening 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air purification device that purifies pollutants in exhaust gas.
[0002]
[Prior art]
BACKGROUND ART Conventionally, an air purifying device generally called a vertical scrubber has been used for purifying pollutants such as water-soluble organic gas, acid and alkali substances contained in exhaust gas discharged from factories and the like. (See, for example, Non-Patent Document 1). As shown in FIG. 5, the air purifying device 27 includes an air purifying device main body 28 having a cylindrical tower-shaped outer shell 31 and an exhaust gas 38 fed into the air purifying device main body 28. And an air blower 35 that performs the operation.
An outer shell 31 of the air purification device main body 28 has a liquid tank 33 below which a liquid agent 39 for absorbing contaminants is stored, and a lower side surface communicating with a blower 35 to exhaust gas 38 inside the outer shell 31. Is provided, and an opening 32 for discharging purified exhaust gas 38 is provided above. Further, inside the outer shell 31, a water spray nozzle 36 for spraying the liquid material 39 upward, and a liquid material 39 sprayed from the water spray nozzle 36 adheres slightly below the water spray nozzle 36 and slightly above the blower opening 34. A filler 37 is provided.
[0003]
When the exhaust gas 38 is fed into the air purification device main body 28 from the blower port 34 through the blower 35, the exhaust gas 38 rises and the air Pass 37. At this time, the liquid agent 39 is sprayed from the water spray nozzle 36 provided inside the outer shell 31, and the liquid agent 39 adheres to the surface of the filler 37. The contaminants in the exhaust gas 38 move in countercurrent contact with the liquid agent 39 attached to the filler 37. Further, the exhaust gas 38 that rises after passing through the filler 37 comes into direct gas-liquid contact with the particle-shaped liquid agent 39 sprayed again from the water spray nozzle 36, and contaminants remaining in the exhaust gas 38 are converted to the liquid agent. Move to 39. As a result, the pollutants of the exhaust gas 38 are purified, and after the droplets in the exhaust gas are removed by the demister 40, the exhaust gas is discharged from above the outer shell 31.
The liquid agent 39 to which the contaminants in the exhaust gas 38 have been transferred is circulated and used. After adhering to the filler 37, the liquid agent 39 is stored in the lower liquid tank 33 and sprayed again via the connection pump 29. The water is supplied to the nozzle 36 and sprinkled on the filler 37.
[0004]
[Non-patent document 1]
Edited by The Japan Society for Chemical Engineering, Technology for Preventing Odor and Hydrocarbon Emissions, Giyo Shoin Co., Ltd.
[0005]
[Problems to be solved by the invention]
It is assumed that the pollutants contained in the exhaust gas 38 are propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, ethyl lactate, etc. The liquid agent 39 used for absorbing the air is circulated, and the air purifying device 27 in which the exhaust gas 38 is blown into the air purifying device main body 28 from the air blowing device 35 and the air speed is set to 1.5 m / s. The contaminant removal rate is about 78% when the concentration of the organic substance in the liquid agent 39 is 0 mg / kg. However, it is known that when the liquid 39 is circulated and the organic matter concentration becomes 250 mg / kg, it is reduced to about 26%.
For this reason, in order to maintain the removal rate of contaminants by the air purification device 27 at 70% or more, a large amount of purified water is supplied to the liquid agent 39 from the supply port 30 so that the liquid agent 39 in the circulated liquid agent 39 is used. It is necessary to control the organic matter concentration to be low.
[0006]
Further, when removing contaminants in the exhaust gas 38 under the above-described conditions, since the thickness of the filler 37 constituting the air purification device 27 is as large as 2 m, the purpose is to wet the filler 37. It is necessary to increase the circulation amount of the liquid agent 39 to about 4 kg in liquid gas ratio. For this reason, a large connecting pump 29 must be used to circulate the liquid agent 39, which increases the initial cost of the air purification device 27, increases the power, and increases the running cost. The liquid / gas ratio is defined as 1 kg or 1 m of air. ³ This indicates the amount of liquid required for the treatment.
[0007]
In view of the above circumstances, an object of the present invention is to provide an air purifying apparatus that efficiently purifies pollutants in exhaust gas with a simple configuration.
[0008]
[Means for Solving the Problems]
The air purification device according to claim 1, wherein the air purification device main body is configured to absorb pollutants in the exhaust gas into a liquid agent to purify the exhaust gas, and the air purification device is connected to a lower side of the air purification device main body. What is claimed is: 1. An air purifying apparatus comprising a blower for feeding exhaust gas into an inside of a main body, wherein the air purifier main body has an opening at an upper side, a blower port communicating with the blower at a lower side surface, and the liquid agent at a bottom. A cylindrical outer shell provided with a liquid tank for storing therein, a first filler disposed so as to horizontally block the inner side above the air outlet of the outer shell, and a first filler above the first filler. A main cleaning unit constituted by a first watering nozzle for watering the liquid agent to the first filler, and an air-discharging unit disposed above the main cleaning unit so as to horizontally close an inner portion of an outer shell. A first demister for removing liquid droplets in the gas; The first filling material of the purification unit is composed of a multi-walled body formed by combining a plurality of hydrophilic plate materials formed into a plate shape and forming a water film on the surface so that the plate surface is inclined from horizontal. And the first watering nozzle is directly connected to a supply pipe for supplying a liquid agent.
[0009]
3. The air purifying apparatus according to claim 2, wherein the first water spray nozzle is provided with a connection pump connected to the liquid tank, and the first water spray nozzle is provided in addition to the liquid agent supplied from the supply pipe. The liquid stored in the liquid tank supplied from the connection pump is sprayed on the first filler.
[0010]
In the air purifying apparatus according to claim 3, an intermediate drain tank for storing a liquid agent sprinkled from the first sprinkling nozzle is provided inside the outer shell and below the main washing unit. Before providing a second demister, a second filler, and a second watering nozzle, which are arranged at a height position between the air outlet and the lower shell so as to close the inside of the outer shell in the order from below. A processing unit is provided, and the first water spray nozzle is provided with a connection pump connected to the intermediate drain tank, and the first water spray nozzle is connected to the first water spray nozzle in addition to the liquid agent supplied from the supply pipe. A liquid pump in the intermediate drain tank supplied from a pump is sprinkled on the first filler, and the second sprinkling nozzle is provided with a connection pump connected to the liquid tank. Sprinkling nozzle in liquid tank supplied by connecting pump The storage liquid is characterized by spraying water into the second filler.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an air purification device of the present invention is shown in FIG. The present invention is directed to an air purification system that forms a water film on a wall surface by adhering a liquid agent to a filler made of a multi-wall body provided in an air purification device, and purifies by transferring pollutants in exhaust gas to the water film. In the device, by applying a multi-walled body having a small layer height but a large surface area and a high hydrophilicity to the filler, the amount of circulation of the liquid agent for purifying the exhaust gas is significantly reduced, and the exhaust gas is efficiently exhausted. Is performed.
[0012]
(First Embodiment)
As shown in FIG. 1, the air purification device 1 includes an air purification device main body 2 and a blower 14. The air purification device main body 2 has a cylindrical tower-shaped outer shell 3 similar to that generally used, and an opening 4 through which purified purified air 26 is discharged is provided above the outer shell 3. Is provided. A first demister 7 is disposed on the outer shell 3 at the uppermost position so as to close the inside, and a first water spray nozzle 9 and a first filler 10 are provided below the first demister 7. A cleaning unit 8 is arranged, and a blow port 5 connected to the blower 14 is provided on a side surface below the first filler 10.
The first demister 7 is generally used as a member for removing droplets in a processing gas accompanied by generation of fine droplets. For example, a stainless fiber or a glass fiber is meshed, or a polypropylene is used. It is formed by performing processing such as weaving fibers or the like into a filter cloth. The first watering nozzle 9 sprays the liquid material 11 for absorbing contaminants contained in the exhaust gas 17 into the outer shell 3. Water, alkaline liquids, acidic liquids, and the like are used depending on the type of contaminants contained in water. These liquid materials 11 are supplied by a supply pipe 23 directly connected to the first watering nozzle 9, and in the present embodiment, the first watering nozzle 9 is supplied by the supply pipe 23 without circulating the liquid material 11. It is configured to spray only the liquid 11 that has been applied.
[0013]
The first filler 10 is used for the purpose of improving the contact efficiency between the liquid agent 11 and the exhaust gas 17 and has a predetermined layer thickness so as to block the inside of the outer shell 3. Are located in The first filler 10 has a large surface area so that the particle-shaped liquid agent 11 sprinkled from the sprinkling nozzle 9 disposed above can easily adhere to the surface. An inorganic multi-walled body that is durable to organic gas, a polypropylene cloth or the like processed into a multi-walled body, or the like is used. In addition, the material used for the first filler 10 is not limited to these, and can form a large surface area and has high durability without being decomposed or fragile even when exposed to acids, alkalis, and organic gases. Any material may be used.
[0014]
In the present embodiment, in order to impart high hydrophilicity to the first filler 10, stainless steel mesh or polypropylene formed into a plate shape using hydrophilic polyester cloth or polypropylene cloth as a surface material. Using a mesh as a carrier, a hydrophilic plate material 10a in which a surface material is integrated with the carrier by adhesion, fusion, sewing, or the like is used. Since the shape of the hydrophilic plate material 10a naturally depends on the carrier, the first filler 10 having high hydrophilicity and a large surface area can be obtained by processing the outer shape of the carrier and combining a plurality of them. Can be formed. Examples of the first filler 10 using the hydrophilic plate material 10a will be described below.
[0015]
The first filler 10 shown in FIG. 4A has a plurality of corrugated adjacent hydrophilic plate materials 10a and 10b arranged in parallel, and the convex surfaces are brought into contact with each other to apply an inorganic or water glass adhesive or the like. It is fixed by using. In addition, the first filler 10 shown in FIG. 4B is formed by combining a plurality of the hydrophilic plate members 10a so as to be orthogonal to each other and using an inorganic adhesive to form the first filler 10 into a lattice shape in plan view. Things. Further, the first filler 10 shown in FIG. 4 (c) is one in which the hydrophilic plate members 10a are arranged in parallel with a predetermined distance, and housed in a predetermined container 24 so as to maintain this arrangement. .
Although the first filler 10 is arranged such that the plate surface of the hydrophilic plate member 10a forms a vertical surface, the first filler 10 is not necessarily limited to this and is in contact with the plate surface of the hydrophilic plate member 10a. The liquid material 11 may be formed at any angle with respect to the horizontal plane as long as the liquid material 11 has such an inclination that it can flow downward by gravity.
The adjacent hydrophilic plate members 10a and 10b shown in FIG. 4A may be joined at different angles.
[0016]
Each of them has not only high hydrophilicity but also a large surface area. For example, in the first filler 10 shown in FIG. ³ About 500m in surface area ^Two / m ^Three Is formed in a size having When the liquid agent 11 comes into contact with the large surface area to form a water film, the exhaust gas 17 comes into countercurrent contact with the water film, so that the pollutants can be efficiently absorbed. Therefore, the first filler 10 can have a sufficient surface area even if the layer thickness is set low, so that it is not necessary to use a large amount of the liquid agent 11 for the purpose of wetting the first filler 10. 0.01 to 1 L / m, significantly less than conventional ³ Sufficient absorption of contaminants can be achieved with a liquid-gas ratio of the order of magnitude.
After absorbing the contaminants contained in the exhaust gas 17, the liquid agent 11 attached to the first filler 10 flows down the surface of the hydrophilic plate 10 a according to gravity, and is provided at the bottom of the outer shell 3. The liquid is primarily stored in the liquid tank 6, drained from the drain 6 a, and processed in an organic wastewater treatment tank (not shown).
[0017]
On the other hand, the blower 14 is connected to a blower port 5 provided below the outer shell 3. The blower 14 has a blower tube 15 having one end fixed to the blower opening 5 of the outer shell 3 and communicating with the outer shell 3, and a blower 16 attached to the other end of the blower tube 15. Is done. Such a blower 14 takes in the exhaust gas 17 by a blower 16 and feeds the exhaust gas 17 into the air purification device main body 2 through a blower tube 15. The blower tube 15 is arranged horizontally. Therefore, the exhaust gas 17 is fed into the air purification device main body 2 as a horizontal flow.
[0018]
A procedure for purifying the exhaust gas 17 using the air purification device 1 having such a configuration will be described below. Exhaust gas 17 discharged from a factory or the like is taken into a blower tube 15 using a blower 16 of the blower 4. The exhaust gas 17 becomes a horizontal flow in the blower pipe 15 and is fed into the outer shell 3 from the blower port 5 provided below the outer shell 3 constituting the air purification device main body 2.
The exhaust gas 17 sent into the outer shell 3 rises and passes through the first filler 10, and the first filler 10 is sprayed with water from the first watering nozzle 9. A liquid film 11 having a particle size having a particle size adheres, and a water film is formed on the surface. Exhaust gas 17 passing through the first filler 10 makes efficient gas-liquid contact with this water film, and contaminants in the exhaust gas 17 migrate to the liquid agent 11 forming a water film.
Further, the exhaust gas 17 that has risen after passing through the first filler 10 directly comes into gas-liquid contact with the particle-shaped liquid agent 11 sprayed again from the first water spray nozzle 9, and the contamination remaining in the exhaust gas 17. The substances are transferred, and the exhaust gas 17 is purified.
The purified air 26 purified through these steps is discharged outward from the opening 4 provided above the outer shell 3 after the droplets of the liquid agent 11 are collected by the first demister 7. You. Therefore, the liquid 11 sprayed from the first filler 10 always has an organic substance concentration of 0 mg / kg.
[0019]
(Second embodiment)
The first embodiment is used in a case where a sufficient liquid-gas ratio can be obtained only by the supply amount of the liquid material 11 through the supply pipe 23 without removing a large amount of the liquid material 11 when removing the pollutants of the exhaust gas 17. An air purification device 1 is shown.
In the second embodiment, the contaminant in the exhaust gas 17 is a substance that is easily dissolved in the liquid agent 11, but the first filler 10 has a large layer thickness and wets the first filler 10. The air purifying apparatus 1 in the case where the supply amount of the liquid agent 11 needs to be increased for this purpose will be described below.
[0020]
As shown in FIG. 2, the air purification device 1 includes an air purification device main body 2 and a blower 14 similar to those in the first embodiment. In the present embodiment, a connection pump 18 for connecting the liquid tank 6 provided at the bottom of the outer shell 3 and the first sprinkler nozzle 9 is provided on the outer shell 3 of the air purification device main body 2. ing.
Therefore, not only the liquid agent 11 supplied from the supply pipe 23 but also the stored liquid agent 12 already sprinkled from the first watering nozzle 9 and stored in the liquid tank 6 are combined with the first watering nozzle 9. 13 is circulated and supplied by a connection pump 18. As a result, since the adjustment liquid 13 contains the stored liquid 12, the liquid tank 6 can be provided with a sufficient volume, so that it is possible to cope with a large liquid-gas ratio. Even when the layer thickness of the material 10 is large, a sufficient supply amount can be secured.
[0021]
The stored liquid agent 12 containing a predetermined amount or more of contaminants is drained from a drain port 6a provided in the liquid tank 6 without being circulated, and is treated in an organic drain treatment tank (not shown). Further, a supply port 6b is provided in the liquid tank 6, and a new liquid agent 11 is supplied from the supply port 6b, so that the organic matter concentration of the stored liquid agent 12 is adjusted. Therefore, a configuration may be adopted in which a control device (not shown) for the concentration of the organic substance relating to the stored liquid 12 in the liquid tank 6 is attached to the liquid tank 6 so that the drainage of the stored liquid 12 and the supply of the new liquid 11 are automated.
[0022]
(Third embodiment)
In the third embodiment, when the exhaust gas 17 contains a solid or sticky liquid such as dust or mist other than the pollutant to be removed, or when the concentration of the pollutant in the exhaust gas 17 is reduced. 1 shows an air purification device 1 used when the air purification device is high.
[0023]
As illustrated in FIG. 3, the air purification device 1 includes an air purification device main body 2 and a blower 14, and the blower 14 has a configuration similar to those of the first embodiment and the second embodiment. ing. The air purification device main body 2 also has a tower-shaped outer shell 3 similarly to the first and second embodiments, and has an opening 4 at the top, a liquid tank 6 at the bottom, and An air outlet 5 is provided on the lower side surface, a first demister 7 is provided above the inside, and a main cleaning unit 8 is provided below the first demister 7.
In the third embodiment, an intermediate drain layer 25 is disposed below the first filler 10 constituting the main cleaning unit 8, and the stored liquid agent 12 is stored. The intermediate drain layer 25 and the first watering nozzle 9 are connected by a connection pump 18. The first watering nozzle 9 stores the liquid agent 11 supplied from the water supply pipe 23 in the intermediate drain layer. The stored liquid material 12 is circulated and supplied, and the adjusted liquid material 13 in which the liquid material 11 and the stored liquid material 12 are combined is sprayed on the first filler 10. The adjusted liquid material 13 flowing down the first filler material 10 becomes the stored liquid material 12. And stored in the intermediate drain layer 25.
[0024]
A pretreatment including a second demister 22, a second filler 21, and a second watering nozzle 20 at a height position below the intermediate drain layer 25 and above the air outlet 5, in order from below to above. The part 19 is arranged. The second demister 22 and the second filler 21 are made of the same material as the first demister 7 and the first filler 10 described in the first embodiment, respectively. Each of them is arranged so as to close the inside of 3.
In addition, a second watering nozzle 20 disposed above the second filler 21 is connected to a liquid tank 6 provided at the bottom of the outer shell 3 via a connection pump 18. The stored liquid agent 12 stored in the liquid tank 6 is circulated and used to spray the second filler 21.
[0025]
In the third embodiment, the purifying operation of the exhaust gas 17 is performed in two stages of the pretreatment unit 19 and the main cleaning unit 8. In the pretreatment unit 19, the second watering nozzle 20 is used. By circulating and using the stored liquid agent 12 stored in the liquid tank 6, in the main cleaning unit 8, the adjusted liquid agent 13 in which the liquid agent 11 and the stored liquid agent 12 are combined is sprayed from the first watering nozzle 9. Therefore, in comparison with the conditioning liquid agent 13 used in the main cleaning section 8 located in the upper layer of the air purification device main body 2, the pretreatment section 19 located in the lower layer has a lower concentration of the organic substance due to the adsorption of the pollutants of the exhaust gas 17. The configuration is such that a high stored liquid agent 12 is used.
[0026]
A procedure for purifying the exhaust gas 17 using the air purification device 1 having such a configuration will be described below. Exhaust gas 17 discharged from a factory or the like is taken into a blower tube 15 using a blower 16 of the blower 4. In the blower pipe 15, the exhaust gas 17 passes through the blower pipe 15 as a horizontal flow, and flows through the blower port 5 provided below the outer shell 3 constituting the air purification device main body 2 to the inside of the outer shell 3. Sent to.
The exhaust gas 17 sent into the outer shell 3 rises and is blown to the pre-processing unit 19. In the pretreatment unit 19, first, solids such as dust and mist other than contaminants, and sticky liquids are removed by passing through the second demister 22. Thereafter, the liquid material passes through the second filler 21, and the particle-shaped storage liquid 12 sprayed from the second watering nozzle 20 adheres to the second filler 21 to form a water film. The contaminants in the exhaust gas 17 are transferred to the stored liquid agent 12 by countercurrent contact with the water film and efficient gas-liquid contact. Further, the exhaust gas 17 that rises after passing through the second filler 21 directly comes into gas-liquid contact with the particle-shaped liquid agent 11 sprayed again from the second water spray nozzle 9, and contaminates the exhaust gas 17. The substance migrates to the solution 11.
[0027]
The exhaust gas 17 that has passed through the pretreatment section 19 is then sent to the main cleaning section 8. In the main cleaning section 8, it passes through the first filler 10. At this time, the conditioning liquid agent 13 having a particle size sprayed from the first watering nozzle 9 adheres to the first filler 10 to form a water film, and comes into contact with them in a countercurrent manner to efficiently perform gas-liquid The pollutants in the exhaust gas 17 are transferred to the conditioning liquid agent 13 and the exhaust gas 17 is purified.
Further, the exhaust gas 17 that has risen after passing through the first filler 10 directly comes into gas-liquid contact with the particle-shaped adjusting liquid agent 13 sprayed again from the first water spray nozzle 9 and remains in the exhaust gas 17. The contaminants move to the conditioning liquid 13 and the exhaust gas 17 is purified. The purified air 26 that has been purified through these steps passes through the first demister 7 to collect droplets, and then is discharged outward through the opening 4 provided at the upper end of the outer shell 3. You.
[0028]
The second demister 22 was sprayed from the second spray nozzle 20 provided above even if solids such as dust and mist other than the collected contaminants and sticky liquids adhered. Since the particles are washed away by the storage liquid agent 12 having a particle size, no special maintenance is required.
In the same manner as in the second embodiment, the stored liquid agent 12 containing a predetermined amount or more of contaminants in the liquid tank 6 is drained from the drain 6a without being circulated and used, and an organic waste water treatment (not shown) is performed. Processed in a loading tank. Further, a supply port 6b is provided in the liquid tank 6, and a new liquid agent 11 is supplied from the supply port 6b, so that the organic matter concentration of the stored liquid agent 12 is adjusted.
[0029]
As described above, in each of the air purifying devices 1 shown in the first and second embodiments, as the air purifying device 1 moves downward from above the air purifying device main body 2, the concentration of the organic substance contained in the liquid agent 11 or the adjusting liquid agent 13 increases. To increase. Also in the third embodiment, the adjustment liquid 13 used in the main cleaning unit 8 disposed above the air purification device main body 2 and the storage liquid 12 used in the pretreatment unit 19 disposed below are different. The stored liquid agent 12 has a higher organic matter concentration. On the other hand, the exhaust gas 17 blown from below the air purification device main body 2 travels upward while purifying the contaminants, so that the contaminant concentration also gradually decreases as going downward from above.
[0030]
In general, the liquid agent 11 having a low organic substance concentration easily absorbs the contaminants contained in the exhaust gas 17 having a low contaminant concentration, and the liquid agent 11 having a high organic substance concentration removes the contaminants in the exhaust gas 17 having a high contaminant concentration. It is generally known that it is easily absorbed. Therefore, in the air purifying apparatus 1 according to the present embodiment, the exhaust gas 17 whose pollutant concentration has already been reduced is stored in the upper layer of the air purifying apparatus main body 2 together with the liquid agent 11 or the liquid agent 11 that has almost not absorbed the pollutant. The liquid material 12 is brought into direct gas-liquid contact with the adjusted liquid material 13, and the exhaust gas 17 having a high contaminant concentration in the lower layer is brought into gas-liquid contact with the adjusted liquid material 13 already containing the contaminant and having a high organic matter concentration or the stored liquid material 12. Therefore, the pollutants can be efficiently removed according to the pollutant concentration of the exhaust gas 17.
[0031]
In order to grasp these effects, regarding the air purification device 1 in which only the main cleaning unit 8 is disposed inside the air purification device main body 2 shown in the first embodiment without disposing the pretreatment unit 19, The inflow wind velocity of the exhaust gas 17 is 1.5 m / s, the thickness of the filler 10 provided in the air purification device main body 2 is 0.2 m, and the liquid-gas ratio of the liquid agent 11 is 0.11 L / m. ³ As an example, the removal rate of pollutants in the exhaust gas 17 was calculated. It is assumed that the contaminants in the exhaust gas 17 include propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, ethyl lactate, and the like.
As a result, the air purification device 1 can remove the pollutants of the exhaust gas 17 to about 66 to 71%. Further, the inflow wind speed of the exhaust gas 17 is 1.5 m / s, the thickness of the filler 10 provided in the air purification device main body 2 is 0.3 m, and the liquid-gas ratio of the liquid agent 11 is 0.26 L / m. ³ Taking as an example, the removal rate of pollutants in the exhaust gas 17 was calculated. As a result, the air purifying apparatus 1 can remove pollutants of the exhaust gas 17 to about 72 to 80%.
[0032]
On the other hand, in the conventional air purifying device 27 as shown in FIG. 5, the layer thickness of the filler 37 is 2 m, the liquid agent 39 used for absorbing pollutants is circulated, and the air purifying device 35 is blown. When the wind speed at which the exhaust gas 38 is blown into the main body 28 is set to 1.5 m / s and the exhaust gas 38 is removed, the removal rate of the contaminants in the exhaust gas 38 becomes 0 mg / sec. In the case of kg, it is about 78%, so even if the layer thickness of the first filler is about 1/6 and the liquid-gas ratio is about 1/15, it is the same as that of the conventional air purification device 27. It can be seen that the removal rate can be achieved.
[0033]
【The invention's effect】
According to the air purifying apparatus of the first aspect, the air purifying apparatus main body for purifying the exhaust gas by absorbing the pollutants in the exhaust gas into the liquid agent and the lower part of the side surface of the air purifying apparatus body, An air purifying device including a blower for feeding exhaust gas into a purifier main body, wherein the air purifier main body has an opening at an upper portion, a blower opening communicating with the blower at a lower side surface, and a bottom portion. A cylindrical outer shell provided with a liquid tank in which the liquid agent is stored, a first filler disposed so as to horizontally close an inner side above a blowing port of the outer shell, and a first filler. A main cleaning unit including a first watering nozzle that is disposed above and sprays the liquid agent on the first filler, and is disposed so as to horizontally close an inner portion of the outer shell above the main cleaning unit. , A first demister for removing droplets in the exhaust gas, A multi-walled body formed by combining a plurality of hydrophilic plate materials in which the first filler of the main cleaning unit is formed into a plate shape and forms a water film on the surface so that the plate surface is inclined more than horizontal. And the first sprinkling nozzle is directly connected to the supply pipe for supplying the liquid agent, so that 1 m ³ As the surface area per unit area increases significantly, the thickness of the layer can be reduced, and the air purifier can be made more compact and the initial cost can be significantly reduced, while maintaining the same level of contaminant removal rates as before. Becomes possible. Further, since the layer thickness of the filler can be formed to be small, the supply amount of the liquid agent can be significantly reduced, and even when the liquid agent is circulated, it is not necessary to use a large connecting pump, and the running cost can be reduced. .
[0034]
According to the air purification device of claim 2, the first water spray nozzle is provided with a connection pump connected to the liquid tank, and the first water spray nozzle is provided with a liquid agent supplied from the supply pipe. In addition, since the liquid stored in the liquid tank supplied from the connection pump is sprinkled on the first filler, the layer thickness of the first filler is set to be large, and a large amount of liquid is required. In this case, it is possible to easily cope with the situation.
[0035]
According to the air purifying apparatus of the third aspect, an intermediate drain tank for storing a liquid agent sprayed from the first water spray nozzle is provided below the main washing section inside the outer shell and the intermediate drain tank. A second demister, a second filler, and a second watering nozzle which are arranged at a height position between the tank and the blower port so as to close the inside of the outer shell in order from below to above. A pretreatment unit is provided, and the first watering nozzle is provided with a connection pump connected to the intermediate drain tank, and the first watering nozzle is provided in addition to the liquid agent supplied from the supply pipe, A liquid pump in the intermediate drain tank supplied from the connection pump is sprinkled on the first filler, and the second watering nozzle is provided with a connection pump connected to the liquid tank. Two watering nozzles are supplied by the connecting pump Since the liquid stored in the tank is sprinkled on the second filler, the second demister of the pre-processing section can also use the second demister even when the exhaust gas contains a solid or sticky liquid such as dust or mist. In addition to being able to collect, even when the concentration of contaminants to be removed is high, the contaminant removal work is performed in two stages, the main cleaning section and the pretreatment section, so it is comparable to a conventional air purification device. Can be achieved.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of an air purification device of the present invention.
FIG. 2 is a view showing a second embodiment of the air purification device of the present invention.
FIG. 3 is a view showing a third embodiment of the air purification device of the present invention.
FIG. 4 is a diagram showing a first filler of the air purification device of the present invention.
FIG. 5 is a diagram showing a conventional air purification device.
[Explanation of symbols]
1 air purification device
2 Air purification device body
3 outer shell
4 opening
5 Blow port
6 liquid tank
6a drain
7 First demister
8 Main cleaning section
9 First watering nozzle
10 First filler
10a hydrophilic plate material
10b Hydrophilic plate material
11 liquids
12 Storage liquid agent
13 Adjusting liquid
14 Blower
15 Blower tube
16 Blower
17 Exhaust gas
18 Connecting pump
19 Pre-processing unit
20 Second watering nozzle
21 Second filler
22 Second demister
23 Supply piping
24 containers
25 Intermediate drain layer
26 Purified air
27 Air purification device
28 Air purification device body
29 Connecting pump
30 Supply port
31 outer shell
32 opening
33 liquid tank
34 Blow port
35 Blower
36 Watering nozzle
37 filler
38 Exhaust gas
39 solutions
40 demister

Claims (3)

An air purification device body for purifying exhaust gas by absorbing contaminants in the exhaust gas into a liquid agent,
An air purification device including a blower that is connected to a lower portion of a side surface of the air purification device main body and that supplies exhaust gas to an inside of the air purification device main body,
The air purification device main body has an opening on the upper side, a blowing port communicating with the blowing device on a lower side surface, and a cylindrical outer shell provided with a liquid tank for storing the liquid agent at a bottom portion,
A first filler disposed so as to horizontally close the inside above the air outlet of the outer shell; and a first filler disposed above the first filler to spray the liquid agent on the first filler. A main cleaning unit configured by a first watering nozzle;
A first demister that is disposed so as to horizontally close the inside of the outer shell above the main cleaning unit and removes droplets in exhaust gas;
A multi-walled body formed by combining a plurality of hydrophilic plate materials in which the first filler of the main cleaning unit is formed into a plate shape and forms a water film on the surface so that the plate surface is inclined from horizontal. Is composed of
An air purifying device, wherein the first watering nozzle is directly connected to a supply pipe for supplying a liquid agent. The air purification device according to claim 1,
The first watering nozzle is provided with a connection pump connected to the liquid tank, and the first watering nozzle is provided with a liquid supplied from the connection pump in addition to a liquid supplied from the supply pipe. An air purification device, wherein a liquid stored in a tank is sprinkled on the first filler. The air purification device according to claim 1,
Inside the outer shell, below the main washing section, an intermediate drain tank for storing the liquid agent sprayed from the first watering nozzle is provided,
A second demister, a second filler, and a second filler arranged at a height position between the intermediate drain tank and the air outlet so as to close the inside of the outer shell in order from below to above. A pre-processing unit having a watering nozzle is provided,
The first watering nozzle is provided with a connection pump connected to the intermediate drain tank, and the first watering nozzle is connected to the intermediate pump supplied from the connection pump in addition to the liquid supplied from the supply pipe. Sprinkling the liquid stored in the drain tank on the first filler,
The second watering nozzle is provided with a connection pump connected to the liquid tank, and the second watering nozzle supplies the liquid stored in the liquid tank supplied from the connection pump to the second filler. An air purification device characterized by spraying water.

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