JP2023142810A - Wet-type dust collection device, wet-type dust collection method, and powder dust removal device - Google Patents

Abstract

To provide a wet-type dust collection device, a wet-type dust collection method, and a powder dust removal device with enhanced powder dust removal performance and sterilization performance.SOLUTION: A wet-type dust collection device includes: an ozone water generation device 2, a first mist sprayer 3, a second mist sprayer 4a, a second mist sprayer 4b, and a tube group type scrubber 5. The first mist sprayer 3, the second mist sprayer 4a, the second mist sprayer 4b, and the tube group type scrubber 5 are provided inside a wet-type dust collection chamber 1a. The ozone water generation device 2 is connected to the wet-type dust collection chamber 1a through a hose 2b, and an ejection part 2a is provided at the tip of the hose 2b. In the ozone water generation device 2, ozone is ejected into the water from the ejection part 2a at the tip through the hose 2b so that the ozone is dissolved into the water, and ozone water 21 is generated. Outside air is sucked from a suction port 71 by the actuation of a blower, and after dust removal and sterilization, the air is discharged from the exhaust port 72.SELECTED DRAWING: Figure 2

Description

The present invention relates to a technology for removing dust such as volcanic ash, iron powder, oil mist, pollen, and viruses contained in gas, or for sterilizing the air.

As a technique for removing dust from dust-containing gas, the present inventors have already proposed a dust removal device that includes a gravity dust collection means, a wet dust collection means, and an air intake means (see Patent Document 1). . The dust removal device of Patent Document 1 is operated by an intake means provided on the exhaust side of a wet dust collection means, and uses a gravity dust collection means to cause dust to fall from a gas containing dust by gravity, and further Wet dust collection means removes dust in gas by passing it through liquid, which allows dust removal performance to be maintained for a long period of time, easy maintenance, and can be used at low cost. It is.
In the dust removal device of Patent Document 1, an example is disclosed in which the liquid provided in the wet dust collecting means contains a virus sterilizing agent, but in recent years, there has been an increasing need to further improve the sterilizing performance.

On the other hand, a wet dust collector that performs a two-stage gas-liquid mixing process is known (see Patent Document 2). The wet type dust collector of Patent Document 2 uses a cyclone section to treat coarse particles of gas containing dust, then brings it into contact with mist through a water sprinkling duct, and then brings the dust to the water surface using a secondary gas-liquid mixing mechanism. By spraying, dust collection efficiency is increased.
However, there is a problem in that a two-stage gas-liquid mixing process is not sufficient to improve sterilization performance. The wet dust collector of Patent Document 2 is originally intended to remove dust, and is not intended to improve sterilization performance, so it can be said that sufficient consideration has not been given to improving sterilization performance.

International public pamphlet 2020/226163 Japanese Patent Application Publication No. 2011-136277

In view of this situation, an object of the present invention is to provide a wet dust collection device, a wet dust collection method, and a dust removal device with improved dust removal performance and sterilization performance.

In order to solve the above problems, the wet dust collector of the present invention removes dust from the gas by introducing a gas containing dust and passing it through the liquid. or a scrubber water generating means for supplying a reducing agent and generating scrubber water containing the oxidizing agent or reducing agent; and a first means for sucking up the scrubber water, making it into a mist, and spraying it on the gas before passing it into the liquid. The apparatus includes a mist spraying means and a second mist spraying means for sucking up the scrubber water, making it into a mist, and spraying it on the gas after passing through the liquid.
By providing the scrubber water generating means, the sterilization performance of the liquid through which gas passes can be improved. By providing the first mist spraying means, the mist adheres to dust in the gas, making it possible to remove dust and sterilize bacteria. Further, by adhering the mist to the dust, dust removal or sterilization by passing gas into the liquid can be made more effective. By providing the second mist spraying means, the mist is further attached to fine dust and viruses that were not sterilized by passing gas through the liquid, thereby removing dust and sterilization. I can do it.
The oxidizing agent or reducing agent includes a wide range of known oxidizing agents and reducing agents, and those that are gaseous, liquid, or solid at room temperature can be used. For example, ozone is an oxidizing agent with excellent sterilization and deodorizing properties, and metal ions such as gold, silver, copper, platinum, and lead have strong sterilizing power and are reducing agents.

It is preferable that the wet dust collector of the present invention further includes a removing means for removing an oxidizing agent or a reducing agent contained in the gas after dust removal, after the second mist spraying means. By providing the removal means, the gas after dust removal or sterilization can be discharged to the outside as a safer gas. As a removal means, a wide range of known removal devices can be applied. For example, when ozone is used as an oxidizing agent, an ozone removal device using an activated carbon decomposition method, a catalytic method, a thermal decomposition method, or a chemical cleaning method is suitable. used.

In the wet type dust collector of the present invention, it is preferable that an ammonia adsorbent made of a Prussian blue analog is disposed in the wet type dust collector to remove ammonia from gas. Thereby, the deodorizing effect can be improved. Although the ammonia adsorbent is placed inside the wet dust collector, it does not necessarily need to be placed inside the wet dust collection chamber that is the main body of the wet dust collector, and may be placed outside the wet dust collection chamber. Moreover, when the gas-liquid separation means described later is provided, it is preferable that the ammonia adsorbent is provided after the gas-liquid separation means. By being provided after the gas-liquid separation means, it is possible to prevent liquid from adhering to the ammonia adsorbent, thereby further improving the deodorizing effect.

In the wet dust collector of the present invention, it is preferable that gas-liquid separation means is provided downstream of the second mist spraying means. Since the gas from which dust has been removed by the wet dust collector contains a slight amount of moisture, the provision of a gas-liquid separation means makes it possible to remove moisture from the gas. The gas-liquid separation means may have a mechanism for dropping liquid using a plurality of louvers, or may have a mechanism for separating gas and liquid by centrifugal separation. Alternatively, the device may include a mechanism for removing moisture from the gas by meandering the gas up and down. The removed liquid is preferably returned to the liquid within the device.

In the wet dust collector of the present invention, it is preferable that a plurality of screen sections be provided at the bottom of the device where the liquid is stored. By providing the screen portion, it is possible to prevent dust from accumulating in the gap formed by the adjacent screen portions and from flying up the dust accumulated at the bottom. This makes it difficult for dust to be mixed into the liquid sucked up by the first or second mist spraying means, and it is possible to prevent piping from clogging.

In the wet dust collector of the present invention, the oxidizing agent or reducing agent includes a wide range of known oxidizing agents and reducing agents, but is preferably a known substance with high sterilization performance, and more preferably, the oxidizing agent is a substance with high sterilization performance. It is ozone gas, and the scrubber water is ozone water.

The dust removal device of the present invention is characterized in that a gravity type dust collector is provided upstream of any of the above-mentioned wet type dust collectors. By installing a gravity type dust collector, it becomes possible to remove relatively large dust with the gravity type dust collector before dust removal or sterilization by the wet type dust collector. This reduces the performance deterioration of liquids. The structure of the gravity type dust collector may be to allow dust to fall using a plurality of louvers (blades), or to remove dust in the gas by meandering the gas up and down. Note that the gravity type dust collector is operated by the same gas introduction means as the gas introduction means that operates the wet type dust collector.

The wet dust collection method of the present invention is a method for removing dust in the gas by introducing a gas containing dust and passing it through a liquid, and includes the following steps 1) to 3).
1) A scrubber water generation step of supplying an oxidizing agent or reducing agent to the liquid in the device to generate scrubber water containing the oxidizing agent or reducing agent.
2) A first misting step of sucking up the scrubber water, making it into a mist, and spraying it onto the gas before passing it into the liquid.
3) A second mist spraying step in which the scrubber water is sucked up, made into a mist, and sprayed onto the gas after passing through the liquid.

According to the wet dust collection device, wet dust collection method, and dust removal device of the present invention, there is an effect that dust removal performance and sterilization performance are improved.

Functional block diagram of wet dust collector of Example 1 Schematic diagram of the wet dust collector of Example 1 Schematic flow diagram of wet dust collection method of Example 1 Explanatory diagram of the wet dust collector of Example 1 Functional block diagram of wet dust collector of Example 2 Schematic diagram of the wet dust collector of Example 2 Schematic diagram of the wet dust collector of Example 3 Image diagram of the gravity dust collector of Example 4 Image diagram of the gas-liquid separator of Example 5 Schematic diagram of the wet dust collector of Example 6

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. Note that the scope of the present invention is not limited to the following embodiments and illustrated examples, and numerous changes and modifications are possible.

FIG. 1 shows a functional block diagram of a wet dust collector according to a first embodiment. As shown in FIG. 1, the wet dust collector 100 includes a scrubber water generating means 200, a first mist spraying means 300, a second mist spraying means 400, and a bubbling means 500. Note that the wet type dust collector 100 operates when negative pressure is generated in the bubbling means 500 by suction or compression by a gas introducing means (not shown).
The scrubber water generating means 200 supplies an oxidizing agent or a reducing agent to the liquid within the apparatus, and generates scrubber water containing the oxidizing agent or reducing agent. The first mist spraying means 300 sucks up the scrubber water generated by the scrubber water generation means 200, makes it into a mist, and sprays it onto the gas before passing it into the liquid. The second mist spraying means 400 sucks up the scrubber water generated by the scrubber water generation means 200, makes it into a mist, and sprays it on the gas after passing through the liquid. Moreover, the bubbling means 500 removes dust in the gas by passing the gas into the liquid.

FIG. 2 shows a schematic image diagram of the wet type dust collector of Example 1. As shown in FIG. 2, the wet dust collector 1 includes an ozone water generator 2, a first mist sprayer 3, a second mist sprayer (4a, 4b), and a tube group scrubber 5. The first mist sprayer 3 corresponds to the first mist sprayer 300 in the wet dust collector 100, and the second mist sprayer (4a, 4b) corresponds to the second mist sprayer 400. It is something. Further, the tube bank type scrubber 5 corresponds to bubbling means 500, and the ozone water generating device 2 corresponds to scrubber water generating means 200, respectively.
The first mist sprayer 3, the second mist sprayer (4a, 4b), and the tube bank type scrubber 5 are provided inside the wet dust collection chamber 1a. Further, the ozone water generating device 2 is connected to the wet dust collection chamber 1a via a hose 2b, and a spouting part 2a is provided at the tip of the hose 2b. The ozonated water generating device 2 ejects ozone into the water from the ejection part 2a at the tip via the hose 2b, so that the ozone is dissolved in the water and ozonated water 21 is generated.
The wet dust collector 1 operates a blower (not shown) to suck in outside air from an intake port 71, remove dust and bacteria, and then discharge the air from an exhaust port 72.
Although not shown, the wet dust collector 1 may be installed on a truck or the like and may have a movable structure.

Ozonated water 21 is contained in the wet dust collection chamber 1a. The tube group type scrubber 5 is made up of a pipe 50 and a gas introduction tube 51, and the gas introduction tube 51 of the tube group type scrubber 5 is inserted into the ozonated water 21 liquid.
The first mist sprayer 3 pumps up the ozonated water 21 housed in the wet dust collection chamber 1a through the pipe 6a, turns the ozonated water 21 into a mist, and then sprays it onto the gas 8a introduced from the intake port 71. Further, the second mist sprayer 4a pumps up the ozonated water 21 housed in the wet dust collection chamber 1a through the piping 6b, and similarly, the second mist sprayer 4b pumps up the ozonated water 21 housed in the wet dust collection chamber 1a through the piping 6c. The ozonated water 21 is pumped up, made into a mist, and then sprayed onto the gas 8c from which dust has been removed by the tube group type scrubber 5.

(About ozone water generation)
Moreover, FIG. 3 shows a schematic flow diagram of the wet dust collection method of Example 1. As shown in FIG. 3, first, an oxidizing agent or a reducing agent is supplied to the liquid in the device to generate scrubber water containing the oxidizing agent or reducing agent (step S01). In this embodiment, ozone is used as an oxidizing agent, and ozone water 21 is generated as scrubber water. Specifically, ozone is supplied from the ozone water generator 2 through the hose 2b, and the ozone is ejected from the ejection part 2a into the liquid contained in the wet dust collection chamber 1a, thereby producing ozone in the water. It is dissolved to generate ozone water 21. The ozonated water 21 is used for any of atomization of the mist 20 by the first mist atomizer 3, atomization of the mist 20 by the second mist atomizer (4a, 4b), and bubbling by the tube group type scrubber 5.

(About the first mist spray)
Next, as shown in FIG. 3, the scrubber water is sucked up, made into a mist, and sprayed onto the gas before being passed into the liquid (step S02). FIG. 4 shows an explanatory diagram of the wet dust collector of Example 1. As shown in FIG. 4, the first mist sprayer 3 pumps up the ozonated water 21 housed in the wet dust collection chamber 1a through the piping 6a shown in FIG. The dust-containing gas 8a introduced into the pipe 50 from 71 is sprayed. As shown in FIG. 4, the mist 20 is sprayed so as to face the traveling direction of the gas 8a.

The gas 8a containing dust introduced from the intake port 71 is sprayed with the mist 20 from the first mist sprayer 3, and the mist 20 adheres to the dust, thereby removing dust and sterilization. 5 and the second mist sprayer (4a, 4b), the gas becomes a gas 8b that can be easily removed or sterilized, and is sent to the gas introduction pipe 51.
In this way, the first mist sprayer 3 not only has dust removal and sterilization performance by itself, but also plays a role in making dust removal or sterilization more effective by the tube group type scrubber 5 provided at a later stage. Also plays a role.

(About dust removal or sterilization using tube group type scrubber)
After the first mist spraying, as shown in FIG. 3, the dust in the gas is removed by passing the gas through the liquid (step S03). As shown in FIG. 4, the tube group type scrubber 5 has a mechanism that branches the gas sent from the pipe 50 into a plurality of gas introduction pipes 51. Since the tip of the gas introduction pipe 51 is inserted into the ozonated water 21, when the wet dust collector 1 operates, the inside of the wet dust collection chamber 1a becomes negative pressure, and the ozonated water flows from the end of the gas introduction pipe 51. Gas 8b is ejected into the liquid 21. The ejected gas 8b becomes bubbles 80, and when they come into contact with the ozonated water 21, the fine dust contained in the bubbles 80 is adsorbed by the ozonated water 21, and the ozonated water 21 has a sterilizing effect.

The dust adsorbed by the ozone water 21 accumulates at the bottom of the wet dust collection chamber 1a, and is removed by a discharge mechanism (not shown). A plurality of screen sections 52 are provided at the bottom of the wet dust collection chamber 1a, and the dust 52b accumulated at the bottom is prevented from flying up by accumulating in the gap 52a formed by the adjacent screen sections 52. can.

Since the gas 8b has already been sprayed once with the mist 20 by the first mist atomizer 3, when it is ejected into the ozonated water 21 from the tip of the gas introduction pipe 51, the dust to which the mist 20 has adhered is removed. comes into contact with the ozonated water 21. This further improves the dust removal or sterilization performance of the tube group type scrubber 5.
Note that if the bubbles 80 are too large, the ozonated water 21 will not be able to collect dust sufficiently, so it is necessary to reduce the size of the bubbles to some extent. Therefore, a surfactant is added to the ozone water 21 in order to increase the viscosity. Although not shown, an ammonia adsorbent made of a Prussian blue analog may be placed in the wet dust collection chamber 1a in which the ozonated water 21 is stored to remove ammonia from the gas. This improves deodorizing and sterilizing effects.

(About the second mist spray)
As shown in FIG. 3, the scrubber water is sucked up, made into a mist, and sprayed onto the gas after passing through the liquid (step S04). As shown in FIG. 4, when the bubbles 80 that have risen to the surface of the ozonated water 21 are burst, a gas 8c from which dust and bacteria have been removed is formed. The gas 8c removed by the tube group type scrubber 5 is sprayed with mist 20 from the second mist sprayer (4a, 4b), and the mist 20 adheres to the dust remaining in the gas 8c, thereby further removing dust. Then, sterilization is performed, resulting in a gas 8d shown in FIG. As shown in FIG. 4, the mist 20 is sprayed so as to face the traveling direction of the gas 8c. The dedusted and sterilized gas 8d is discharged from the exhaust port 72 shown in FIG.

The mist 20 sprayed by the second mist sprayer (4a, 4b) has already been sprayed once by the first mist sprayer 3, and further bubbling is performed by the tube group type scrubber 5. This is done for the purpose of removing dust or sterilizing extremely fine dust, viruses, etc. that were not collected by the mist sprayer 3 and tube group type scrubber 5. Therefore, the mist 20 sprayed by the second mist sprayer (4a, 4b) may be composed of particles smaller than the mist 20 sprayed by the first mist sprayer 3. Conversely, in the case of a structure that does not include a gas-liquid separation means, such as the wet dust collector 1, for example, in order to reduce the concentration of ozonated water 21 contained in the gas 8d discharged from the exhaust port 72. , particles larger than the mist 20 sprayed by the first mist sprayer 3 may be sprayed.
In this embodiment, the first mist sprayer 3 is provided at one location, and the second mist sprayer (4a, 4b) is provided at two locations in total, but the location and number of mist sprayers are limited to this. isn't it.

In this way, in the wet dust collection device and wet dust collection method of this embodiment, the first mist sprayer 3 and the second mist sprayer (4a, 4b) both perform wet collection using the same ozonated water 21. A mist 20 is sprayed into the gas introduced into the dust chamber 1a. However, the purpose of the first mist sprayer 3 is to make dust removal and sterilization by itself as well as dust removal and sterilization by the tube group type scrubber 5 in the subsequent stage more effective and efficient. The purpose of the second mist sprayer (4a, 4b) is to remove dust and viruses that are not collected by the first mist sprayer 3 and tube group type scrubber 5. There is. That is, the first mist sprayer 3 and the second mist sprayer (4a, 4b) each have their own purpose and effect, and the first mist sprayer 3, the tube group type scrubber 5, and the second mist sprayer By providing (4a, 4b) in this order, dust removal or sterilization performance is improved.

Note that the injection pressure and amount of mist 20 sprayed by the first mist sprayer 3 or the second mist sprayer (4a, 4b) are adjusted according to the output of the gas introducing means such as the blower used. That is, when the output of the gas introducing means is increased, control is performed such that the injection pressure of the mist 20 is increased or the amount of spray is increased in order to prevent the deterioration of the dust removal and sterilization effects.
In addition to the size of the mist particles, the spray pressure and spray amount of the mist 20 may also be set differently between the first mist sprayer 3 and the second mist sprayer (4a, 4b). For example, by setting the mist 20 sprayed by the first mist sprayer 3 to a higher spray pressure and a larger spray amount than the mist 20 sprayed by the second mist sprayer (4a, 4b), the gas 8a It is possible to effectively attach the mist 20 to the dust contained in the dust.

FIG. 5 shows a functional block diagram of a wet dust collector according to the second embodiment. As shown in FIG. 5, the wet dust collector 101 includes a scrubber water generating means 200, a first mist spraying means 300, a second mist spraying means 400, a bubbling means 500, a gas introducing means 700, a removing means 900, and a gas removing means 900. Equipped with liquid separation means. The wet type dust collector 101 operates when negative pressure is generated in the bubbling means 500 by suction or compression by the gas introduction means 700. The removing means 900 removes the oxidizing agent or reducing agent contained in the gas after dust removal. Gas-liquid separation means 1100 is provided between second mist spraying means 400 and removal means 900, and separates liquid from gas. Note that the scrubber water generating means 200, the first mist spraying means 300, the second mist spraying means 400, and the bubbling means 500 are the same as those in the wet type dust collector 100 of the first embodiment.

FIG. 6 shows a schematic image diagram of a wet type dust collector according to the second embodiment. As shown in FIG. 6, the wet dust collector 10 includes an ozone water generator 2, a first mist sprayer 3, a second mist sprayer (4a, 4b), a tube bank type scrubber 5, a blower 7, an ozone removal filter 9 and a gas-liquid separator 11. The blower 7 corresponds to the gas introduction means 700 in the wet dust collector 101, the ozone removal filter 9 corresponds to the removal means 900, and the gas-liquid separator 11 corresponds to the gas-liquid separation means 1100. The wet type dust collector 10 sucks the external gas 8a through the intake port 71 by operating the blower 7, removes dust and sterilizes it, separates the liquid from the gas by the gas-liquid separator 11, and then passes it through the ozone removal filter 9. This structure is such that the gas 8f is discharged from the exhaust port 72 after removing ozone.

Here, the structure of the gas-liquid separator 11 will be explained. As shown in FIG. 6, the gas 8d that has been subjected to dust removal and sterilization using the ozonated water 21 is sent to the gas-liquid separator 11. Since the gas 8d that has passed through the ozonated water 21 and been sprayed with the mist 20 contains a slight amount of water, the gas and liquid are separated using the gas-liquid separator 11. The gas-liquid separator 11 is provided with a plurality of blades 11a, all of which are arranged with an inclination from the upper left toward the lower right. By arranging the blades 11a so as to be inclined from the upper left to the lower right, the gas 8d that has flowed into the gas-liquid separator 11 is guided downward.

Moreover, since a plurality of blades 11a are provided, the inflowing gas 8d does not survive the airflow whose direction is changed by the blades 11a, but collides with the left side surface of the blade 11a due to its own inertia. As a result, particles of the ozonated water 21 contained in the gas 8d tend to fall downward.
The gas 8d guided downward contains particles of the ozonated water 21, and since the particles of the ozonated water 21 settle due to inertial collision and gravity, the gas 8d is guided downward, and the ozonated water is collected in the recovery section 11b. 21 are collected. The gas 8e from which the particles of the ozonated water 21 have been separated from the gas 8d is discharged from the exhaust port 72 after ozone is removed by the ozone removal filter 9. Moreover, the structure is such that the ozonated water 21 separated from the gas 8d by the gas-liquid separator 11 is returned to the wet dust collection chamber 1a again through the pipe 6d.

FIG. 7 shows a schematic image diagram of the dust removal device of Example 3. As shown in FIG. 7, the wet dust collector 10a includes an ozone water generator 2, a first mist sprayer 3, a second mist sprayer (4a, 4b), a tube bank type scrubber 5, a blower 7, an ozone removal filter 9 and a gas-liquid separator 110. The gas 8d that has been subjected to dust removal and sterilization using the ozonated water 21 is sent to the gas-liquid separator 110. Since the gas 8d that has passed through the ozone water 21 and been sprayed by the mist 20 contains a slight amount of water, the gas and liquid are separated using the gas-liquid separator 110. Although not shown in detail, the gas-liquid separator 110 is provided with a mechanism that swirls the gas 8d flowing in from the pipe 110a and separates liquid from the gas 8d using centrifugal force generated by the swirling. The structure is such that the liquid separated from the gas 8d by the gas-liquid separator 110 is returned to the wet dust collection chamber 1a again through the pipe 6d. The gas 8e from which the liquid has been separated passes through the pipe 110b, has ozone removed by the ozone removal filter 9, and is discharged from the exhaust port 72 as a dust- and sterilized gas 8f.

In Example 4, an example will be described in which a gravity type dust collector is provided upstream of a wet type dust collector (1, 10, 10a) or the like. FIG. 8 shows an image diagram of the gravity type dust collector according to the fourth embodiment. As shown in FIG. 8, the gravity type dust collector 12 consists of a first gravity type dust collection chamber 12a and a second gravity type dust collection chamber 12b, which are separated by a partition wall 13b. Both the first gravity type dust collection chamber 12a and the second gravity type dust collection chamber 12b guide the gas flowing in from the upper part of the room downward, and after letting the dust fall by gravity, the dust is released from the lower part of the room. This structure purifies gas by guiding it upward.
Specifically, the gas in the first gravity-type dust collection chamber 12a is guided by the partition walls (13a, 13b) and the inclined plate 14a, and is directed downward from the narrow portion 16a formed by the partition wall 13a and the inclined plate 14a. The dust is caused to fall by blowing out the gas 8a at high pressure. Further, 8 g of gas is guided in the second gravity-type dust collection chamber 12b by the partition wall 13b and the inclined plate 14b, and 8 g of gas is guided downward at high pressure from the narrow portion 16b formed by the partition wall 13b and the inclined plate 14b. Dust falls by ejecting. The gas 8h purified in the second gravity dust collection chamber 12b is sent to the pipe 50. Incidentally, the fallen dust 17 is taken out from an open/close type dust removal port 15.

The wet dust collectors (1, 10, 10a) described in Examples 1 to 3 can collect fine dust, but if the collected dust accumulates and the collection efficiency decreases, the collection In order to improve efficiency, it is necessary to replace the ozonated water 21 itself, which is costly and time consuming. On the other hand, when the gravity type dust collector 12 is provided at the front stage, the gravity type dust collector 12 removes 90% or more of the dust contained in the gas 8a, and then the gas 8h can be sent to the wet dust collector (1, 10, 10a). Furthermore, when the collected dust 17 accumulates in the gravity type dust collector 12, it is only necessary to take out the accumulated dust from the dust outlet 15, which has the advantage of being relatively inexpensive and labor-intensive.

The gas-liquid separator provided in the wet dust collector of the present invention is not limited to the configuration of the gas-liquid separator (11, 110) shown in Examples 2 and 3. FIG. 9 shows an image diagram of the gas-liquid separator of Example 5. As shown in FIG. 9, the gas-liquid separator 111 of the fifth embodiment consists of a first gas-liquid separation chamber 111a and a second gas-liquid separation chamber 111b, both of which direct the gas flowing from above into the chamber downward. This structure separates gas and liquid by gravity and centrifugation. The first gas-liquid separation chamber 111a is provided with an inclined plate 14c, and the second gas-liquid separation chamber 111b is provided with an inclined plate 14d. Further, the first gas-liquid separation chamber 111a and the second gas-liquid separation chamber 111b are separated by a partition wall 13c. The partition wall 13c is bonded without any gap at the lower ends of the first gas-liquid separation chamber 111a and the second gas-liquid separation chamber 111b; It is not bonded to the upper end of the chamber 111b, and a gap is provided that serves as a gas flow path.
The gas 8d that has flowed into the first gas-liquid separation chamber 111a is guided downward and centrifugally separated into gas and liquid by an inclined plate 14c having a V-shaped lower end, and the gas 8i from which the liquid has been separated is It is guided to the second gas-liquid separation chamber 111b. The gas 8i that has flowed into the second gas-liquid separation chamber 111b is similarly guided downward and centrifugally separated into gas and liquid by an inclined plate 14d having a V-shaped lower end, and the gas from which the liquid has been separated is It becomes 8e.

FIG. 10 shows a schematic image of the wet dust collector of Example 6. As shown in FIG. 10, the wet type dust collector 10b has an ammonia adsorbent 18 added to the structure of the wet type dust collector 10 of the second embodiment. The ammonia adsorbent 18 is made of a Prussian blue analog and removes ammonia from the gas, thereby providing a deodorizing effect. The ammonia adsorbent 18 removes ammonia from the gas 8e from which the liquid has been separated from the gas 8d by the gas-liquid separator 11. By providing the ammonia adsorbent 18 at the latter stage of the gas-liquid separator 11, it is possible to prevent liquid from adhering to the ammonia adsorbent 18, and the deodorizing effect is improved. Therefore, the location where the ammonia adsorbent 18 is provided is not limited to the location shown in FIG. 10, and may be provided between the ozone removal filter 9 and the blower 7, for example.
In this way, the wet type dust collector 10a can be suitably used in livestock production sites such as pig farms and poultry farms, for example, since it has not only dust removal and sterilization effects but also deodorizing effects.

INDUSTRIAL APPLICABILITY The present invention can be used as an emergency dust removal device or sterilization device during disasters such as earthquakes and volcanic eruptions. It can also be used as a sterilization device for viruses such as influenza and as a deodorization device for ammonia odors at livestock production sites such as pig farms and poultry farms.

1, 10, 10a, 10b, 100, 101 Wet dust collector 1a Wet dust collector 2 Ozone water generator 2a Spout part 2b Hose 3 First mist sprayer 4a, 4b Second mist sprayer 5 Tube group scrubber 6a ～6d, 50, 110a, 110b Piping 7 Air blower 8a～8i Gas 9 Ozone removal filter 11, 110, 111 Gas-liquid separator 11a Blade 11b Recovery section 12 Gravity type dust collector 12a First gravity type dust collection chamber 12b No. Gravity-type dust collection chamber 2 13a to 13c Partition wall 14a to 14d Inclined plate 15 Dust outlet 16a, 16b Narrow part 17, 52b Dust 18 Ammonia adsorbent 20 Mist 21 Ozonated water 51 Gas inlet pipe 52 Screen part 52a Gap 71 Inlet 72 Exhaust port 80 Bubbles 111a First gas-liquid separation chamber 111b Second gas-liquid separation chamber 200 Scrubber water generation means 300 First mist spraying means 400 Second mist spraying means 500 Bubbling means 700 Gas introduction means 900 Removal means 1100 Gas-liquid separation means

Claims (8)

In a device that removes dust from a gas by introducing a gas containing dust and passing it through a liquid,
Scrubber water generation means for supplying an oxidizing agent or a reducing agent to a liquid in the device to generate scrubber water containing the oxidizing agent or the reducing agent;
a first mist spraying unit that sucks up the scrubber water, makes it into a mist, and sprays it on the gas before passing it into the liquid;
a second mist spraying means that sucks up the scrubber water, makes it into a mist, and sprays it on the gas after passing through the liquid;
A wet dust collector characterized by comprising: 2. The wet dust collector according to claim 1, further comprising a removing means for removing the oxidizing agent or the reducing agent contained in the gas after dust removal, after the second mist spraying means. 3. The wet type dust collector according to claim 1, wherein an ammonia adsorbent made of a Prussian blue analog is disposed in the wet type dust collector to remove ammonia from the gas. The wet type dust collector according to any one of claims 1 to 3, characterized in that a gas-liquid separation means is provided downstream of the second mist spraying means. The wet dust collecting device according to any one of claims 1 to 4, wherein a plurality of screen portions are provided at the bottom of the device in which the liquid is accommodated. The wet type dust collector according to any one of claims 1 to 5, wherein the oxidizing agent is ozone gas and the scrubber water is ozone water. A dust removal device characterized in that a gravity type dust collector is provided upstream of the wet type dust collector according to any one of claims 1 to 6. A method for removing dust in a gas by introducing a gas containing dust and passing it through a liquid,
a scrubber water generation step of supplying an oxidizing agent or a reducing agent to the liquid in the device to generate scrubber water containing the oxidizing agent or the reducing agent;
a first mist spraying step of sucking up the scrubber water, making it into a mist, and spraying it on the gas before passing it into the liquid;
a second mist spraying step of sucking up the scrubber water, making it into a mist, and spraying it on the gas after passing through the liquid;
A wet dust collection method characterized by comprising: