JP2003210932A - Equipment for dust collection deodorization - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide equipment for dust collection deodorization, in which an efficient deodorization can be realized at a low cost by contriving an appropriate and inexpensive arrangement of a group of small holes in a perforated plate permeable to polluted gas, and an appropriate arrangement of an ultrasonic generator to the small-hole group. <P>SOLUTION: Polluted gas A containing dust, soot, odor is introduced in the inside of the equipment through a contaminated-gas supply port 16a. The gas passes through a contaminated-gas supply path 16, a communication path 10d, and permeates up the perforated plate 18 dipped in treating liquid B. In this case, ultrasonic wave put out from the ultrasonic generator 20 in the frequency of 19.5-29 kHz is applied to the polluted gas in order to perform a dust collection-deodorization action. Diameters of the holes on the perforated plate 18 are made larger, and the sheet 18 is disposed upward as it goes away from the contaminated-gas-supply path 16. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for purifying contaminated gas, and more particularly to a device for collecting and deodorizing gas containing pollutants such as dust, soot and odor.

[0002]

2. Description of the Related Art As a conventional dust collecting and deodorizing device, there is one as shown in FIG. 5, and its device main body 100 guides a gas containing soot smoke pressurized by a compressor 102 to a discharge pipe 106 by a smoke pipe 104. The discharge pipe 106 is discharged into the water tank 108, and a large number of small holes 106a are uniformly formed at the top of the discharge pipe 106. Then, the gas containing the soot and smoke is processed by the ultrasonic waves oscillated from the ultrasonic transducer 110 installed in the water tank 108, and the soot and smoke is absorbed and removed by the absorbed water in the water tank 108.

However, in the conventional device as described above, since many uniform small holes 106a are formed on the upper surface of the discharge pipe 106, many bubbles are formed on the side of the discharge pipe 106 near the smoke pipe 104. On the side separated from the smoke tube 104, only a few bubbles are formed, resulting in a large pressure loss as a whole,
There is a problem that ultrasonic energy is not effectively used. In addition, there is a problem that the cost for manufacturing the discharge pipe 106 having a large number of small holes 106a increases.

[0004]

Therefore, the present invention makes it possible to appropriately and inexpensively arrange the small hole group of the perforated plate through which the contaminated gas passes, and also to arrange the ultrasonic generator for the small hole group. An object of the present invention is to provide an apparatus that can be appropriately performed and can realize an efficient dust collecting and deodorizing action at low cost.

[0005]

In order to solve the above-mentioned problems, the dust collecting and deodorizing apparatus of the present invention is designed to perform a dust collecting and deodorizing process on a pollutant gas containing pollutants such as dust, soot and odor. The tank body containing the liquid is divided into a polluted gas supply path and a polluted gas treatment section by a partition wall hanging from the top wall of the tank body, and a polluted gas supply port is provided above the polluted gas supply path. Along with the above, a treated gas recovery port is provided in the upper portion of the contaminated gas treatment section, and a communication path between the contaminated gas supply path and the contaminated gas treatment section is provided between the lower edge of the partition wall and the bottom surface of the tank body. Formed, the contaminated gas treatment unit is provided with a perforated plate extending from the lower end edge of the partition wall to the side wall of the tank body,
An ultrasonic wave generator that emits ultrasonic waves from the lower side of the perforated plate to the perforated plate is provided, and the hole diameter in the perforated plate is
It is characterized in that it is set so as to increase as the distance from the contaminated gas supply path increases.

Further, the dust collecting deodorizing apparatus of the present invention is characterized in that the perforated plate is arranged so as to gradually incline upward as it goes away from the polluted gas supply path.

Further, the dust collecting and deodorizing apparatus of the present invention is characterized in that the angle of inclination of the perforated plate is set in the range of 3 to 7 degrees.

In the above dust collecting and deodorizing apparatus of the present invention, dust,
By polluting the pollutant gas containing pollutants such as soot and odor from the pollutant gas supply port or by sucking it from the treated gas recovery port, the pollutant gas passes through the perforated plate and becomes superabundant. The ultrasonic waves from the sound wave generator are subjected to dust collecting and deodorizing action, but at that time, the hole diameters of the large number of small holes in the perforated plate are set so as to increase as the distance from the contaminated gas supply path increases. The contaminated gas is uniformly passed through the perforated plate, and the ultrasonic waves are efficiently and uniformly trapped in the liquid such as dust and decomposed the odorous substance.

Further, since the perforated plate is arranged so as to gradually incline upward as it goes away from the gas supply path, the gas passing through the perforated plate is coupled with the distribution of the hole diameters of the small holes in the perforated plate. Becomes uniform, which enables the deodorizing action of dust collection to be efficiently and properly performed.

When the inclination angle of the perforated plate is set within the range of 3 to 7 degrees based on the result of the experiment, the dust collecting and deodorizing action is performed more efficiently.

Further, the dust collecting and deodorizing apparatus of the present invention is characterized in that the perforated plate has a plurality of stepped hole diameters so that the hole diameters gradually increase as the distance from the contaminated gas supply path increases. .

Further, in the dust collecting and deodorizing apparatus of the present invention, the perforated plate is set in three stages of hole diameters such that the hole diameter increases as the distance from the polluted gas supply route increases, and the ratio of the hole diameters is the gas supply route. 1: 2:
The feature is that it is set to 4.

Further, in the dust collecting and deodorizing apparatus of the present invention, the total area of the holes of the perforated plate is 5 to 15 of the total area of the plane of the perforated plate.
It is characterized by being set to be%.

As described above, when the perforated plate has a plurality of stepped hole diameters so that the hole diameter increases stepwise as it moves away from the contaminated gas supply path, the same for each step at the time of manufacture. Since the boring operation can be performed with the hole diameter, the manufacturing cost can be reduced while maintaining the performance of the entire apparatus as much as possible.

If the size of the hole diameter is set to three, and the ratio of the hole diameter is set to 1: 2: 4 in order from the one closer to the gas supply path,
The manufacturing cost can be reduced and the performance of the entire device can be maintained appropriately.

Further, when the total area of the holes in the perforated plate is set to be 5 to 15% of the total area of the plane of the perforated plate, the polluted gas passes through each of the above holes while the contaminated gas passes through the holes. The separation and capture of dust received by the ultrasonic waves from the ultrasonic generator and the decomposition processing of odorous substances can be performed accurately.

Further, in the dust collecting and deodorizing apparatus of the present invention, means for feeding the polluted gas by pressure feed to the polluted gas supply path is connected, or gas is sucked into the treated gas recovery port in the upper part of the polluted gas treatment section. The operation of the entire apparatus is properly performed by connecting the means.

By setting the ultrasonic wave frequency of the ultrasonic wave generator to 19.5 to 29 kHz, the size and arrangement of the hole diameter in the perforated plate, together with the state of the polluted gas, are collected. The dust deodorizing action is properly performed.

Further, an ozone supply means for supplying ozone gas or ozone water is connected to the polluted gas supply path, or a position of a lower end opening of an ozone supply pipe hung in the polluted gas supply path as the ozone supply means. By setting it at an intermediate level between the bottom edge of the partition wall of the tank body and the bottom surface of the tank body,
The ozone gas or ozone water is appropriately supplied to the treatment liquid, and the sterilizing action of ozone on the polluted gas is properly performed.

Further, when a means for vaporizing and supplying the oil into the polluted gas supply path is provided, the vaporized gas of the oil captures dust and soot in the polluted gas and efficiently transfers it into the treated liquid. It comes to separate.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a dust collecting and deodorizing apparatus as a first embodiment of the present invention, and FIG. It is a top view of a board, Drawing 3 is a longitudinal section of a dust collecting deodorizing device as a 2nd embodiment of the present invention, and Drawing 4 is a longitudinal sectional view of a dust collecting deodorizing device as a 3rd embodiment of the present invention. .

First, a dust collecting and deodorizing apparatus as a first embodiment of the present invention will be described. As shown in FIG.
The tank body 10 containing the processing liquid B such as fresh water or soap water is the same as the tank body 10 so that the dust collecting and deodorizing process can be performed on the polluted gas containing pollutants such as soot and odor.
By the partition wall 10a hanging from the top wall of the
And a contaminated gas supply path 16 are provided, a contaminated gas A supply port 16a is provided above the contaminated gas supply path 16, and a treated gas recovery port 22 is provided above the contaminated gas processing unit 12.
Is provided. A communication path 10d between the polluted gas supply path 16 and the polluted gas processing unit 12 is formed between the bottom edge 10b of the partition wall 10a and the bottom surface 10c of the tank body 10.

Further, the polluted gas treatment section 12 is provided with a perforated plate 18 extending from the lower end edge 10b of the partition wall 10a to the side wall of the tank body 10, and from below the perforated plate 18 toward the perforated plate 18. An ultrasonic wave generator 20 that emits ultrasonic waves is provided, and the ultrasonic wave generator 20 is fitted and fixed to the bottom wall opening 14.

The hole diameters of the large number of small holes 26 in the perforated plate 18 are formed so as to increase as the distance from the polluted gas supply passage 16 increases, but in the present embodiment, the hole diameter is increased stepwise particularly in three steps. As described above, the hole diameters of the small holes 26a, 26b, and 26c at each stage are set, and the hole diameter ratio is 1: 2: 4 in order from the one closer to the polluted gas supply path 16.
3 types of hole diameter 2mmφ, 4mmφ, 8m
mφ is used.

The holes 26a, 26b in the perforated plate 18 are
The total area of 26c is 5 to 15 of the total area of the plane of the perforated plate 18.
It is set to be%.

Further, the perforated plate 18 is provided with a polluted gas supply path 16
It is arranged so as to gradually incline upward with increasing distance from, and the inclination angle α with the horizontal plane 25 is 3 to.
It is set in the range of 7 degrees.

In the tank body 10 of the present apparatus, a gas press-in means such as a blower (not shown) for pressurizing the pollutant gas A is connected to the pollutant gas supply port 16a in the upper part of the polluted gas supply path 16, or Treated gas recovery port
Although a blower 24 as a gas suction means is connected to 22, a gas suction means and a gas suction means described above may be provided together.

The contaminated gas processing section 12 has a liquid level of the processing liquid B.
A liquid level detection sensor 11 for measuring the level of 34 is provided, and based on the detection signal from the sensor 11, the blower 24 of the blower 24 is controlled by a control signal from the controller 13 so that the liquid level is maintained at a required level. The control is performed and the processing liquid is replenished from the tank 15.

The frequency of the ultrasonic waves emitted from the ultrasonic generator 20 is set to 19.5 to 29 kHz.

In the dust collecting and deodorizing device of the first embodiment described above,
A pollutant gas A containing pollutants such as dust, soot, and odor is pressed into the pollutant gas supply port 16a by a blower (not shown) or sucked from the treated gas recovery port 22 by the blower 24. Is subjected to a dust collecting and deodorizing action by the ultrasonic waves from the ultrasonic generator 20 while passing through the perforated plate 18. At that time, a large number of small holes in the perforated plate 18 are
Since 26 is set as small holes 26a, 26b, and 26c having a three-step hole diameter so that the hole diameter increases as the distance from the polluted gas supply path 16 increases, the passage of the polluted gas A through the perforated plate 18 is reduced. In this way, the ultrasonic waves can be efficiently and uniformly captured in the liquid such as dust and decomposed the odorous substance.

Further, since the perforated plate 18 is arranged so as to gradually incline upward as it goes away from the polluted gas supply path 16, the perforated plate 18 is combined with the pore size distribution of the small holes in the perforated plate 18. The flow of the gas passing therethrough becomes uniform, so that the deodorizing action of dust collection can be efficiently and appropriately performed. Then, based on the result of the experiment, the perforated plate 18
When the inclination angle of is set in the range of 3 to 7 degrees, the dust collecting deodorizing action is more efficiently performed.

As described above, the perforated plate 18 has a plurality of stages of small holes 26a, 26b, and 26c in which the diameters of the small holes 26 are gradually increased with increasing distance from the polluted gas supply passage 16. Therefore, at the time of manufacturing, since it is possible to perform the drilling work with the same hole diameter at each stage, it is possible to reduce the manufacturing cost while maintaining the performance of the entire apparatus as much as possible. Then, if the size of the hole diameter is set to three levels, and the ratio of the hole diameter is set to 1: 2: 4 in order from the one closer to the polluted gas supply path 16,
The manufacturing cost can be reduced and the performance of the entire device can be maintained appropriately.

Furthermore, the total area of the holes in the perforated plate 18 is
If it is set so as to be 5 to 15% of the total area of the plane of the porous plate 18, separation of dust received by ultrasonic waves from the ultrasonic wave generator 20 while contaminated gas passes through each of the above-mentioned small holes. The capture and decomposition of odorous substances will be performed properly.

Further, in the dust collecting deodorizing apparatus of this embodiment, means for feeding the polluted gas A by pressure feed to the polluted gas supply path 16 is connected, or to the treated gas recovery port 22 in the upper part of the polluted gas treatment section 12. By connecting a blower 24 as a gas suction means, the operation of the entire apparatus is accurately performed.

The ultrasonic wave generator 20 sets the frequency of the ultrasonic wave to 19.5 to 29 kHz, which, in combination with the size and arrangement of the small holes in the perforated plate 18, results in The deodorizing action of dust collection is properly performed.

Next, a dust collecting deodorizing apparatus as a second embodiment of the present invention will be described. As shown in FIG. 3, this apparatus is also formed in substantially the same manner as the apparatus of the first embodiment described above. In the second embodiment, an ozone introduction path 30 as an ozone supply means for supplying ozone gas or ozone water D for sterilization is connected to the polluted gas supply path 16 in particular, although the same reference numerals indicate the same members. The lower end opening 30a is located at the lower end edge 10b of the partition wall 10a and the tank body.
It is set to an intermediate level with the bottom surface 10c of the 10.

In the above-described second embodiment, in addition to the same effects as the above-described first embodiment, the sterilization effect by ozone is further performed, so that the polluted gas can be purified more appropriately. .

Next, a dust collecting deodorizing device as a third embodiment of the present invention will be described. As shown in FIG. 4, in the case of the third embodiment, the device is formed in substantially the same manner as the device of the first embodiment. The same reference numerals as those in FIG. 1 in FIG. 4 indicate the same members, but in the third embodiment, as means for vaporizing and supplying oil into the polluted gas supply path 16, in particular,
Oil tank for evaporating oil C by heater 42
44 are provided. The heater 42 is controlled by the control device 13.

Also in the case of the above-mentioned third embodiment, the above-mentioned first
In addition to the same effects and advantages as in the embodiment, the vaporized gas of the oil C captures dust and soot in the contaminated gas and efficiently separates it into the treated liquid.

As described above, according to the dust collecting and deodorizing apparatus of the respective embodiments of the present invention, the arrangement of the small hole group of the perforated plate 18 through which the contaminated gas is passed can be appropriately and inexpensively performed.
The ultrasonic generator 20 can be appropriately arranged in the small hole group, and an efficient dust collecting and deodorizing device can be realized at low cost.

[0041]

As described above in detail, according to the dust collecting deodorizing apparatus of the present invention, the following effects can be obtained. (1) By injecting pollutant gas containing pollutants such as dust, soot, odor, etc. through the pollutant gas supply route or sucking it from the treated gas recovery port, the pollutant gas will pass through the perforated plate. It receives dust collecting and deodorizing action by the ultrasonic waves from the ultrasonic generator, but at that time, the hole diameters of a large number of small holes in the perforated plate are set to increase as the distance from the polluted gas supply path increases, The contaminated gas is uniformly passed through the porous plate, and the ultrasonic waves are efficiently and uniformly trapped in the liquid such as dust and decomposed the odorous substance. (2) The perforated plate is arranged so as to incline gradually upward as it goes away from the gas supply path, in combination with the distribution of the pore size of the small holes in the perforated plate,
The flow of gas through the perforated plate becomes uniform, so that the deodorizing action of dust can be efficiently and appropriately performed. (3) When the inclination angle of the perforated plate is set in the range of 3 to 7 degrees, the dust collecting and deodorizing action is more efficiently performed. (4) If the perforated plate is set to have a plurality of stages of hole diameters such that the hole diameter is increased stepwise as it moves away from the polluted gas supply path, the same hole diameter is used for each stage during the manufacturing process. Therefore, the manufacturing cost can be reduced while maintaining the performance of the entire apparatus as much as possible. (5) There are three stages of the size of the pore size, and the ratio of the pore size is closer to the gas supply path in the order of 1:
When the ratio is set to 2: 4, the manufacturing cost can be reduced and the performance of the entire device can be appropriately maintained. (6) When the total area of the holes in the perforated plate is set to be 5 to 15% of the total area of the plane of the perforated plate,
While the contaminated gas passes through each of the above holes, the dust received by the ultrasonic waves from the ultrasonic wave generator and the decomposition process of the odorous substance can be performed accurately. (7) By connecting a means for supplying polluted gas under pressure to the polluted gas supply path, or by connecting a gas suction means to the processed gas recovery port in the upper part of the polluted gas processing section, the device The operation as a whole is accurately performed. (8) The ultrasonic generator sets the frequency of the ultrasonic wave to 19.
By setting the frequency to 5 to 29 kHz, the dust collecting and deodorizing action with respect to the polluted gas is appropriately performed in combination with the size and arrangement state of the hole diameter in the porous plate. (9) In the polluted gas supply path, an ozone supply means for supplying ozone gas or ozone water is connected, or the position of the lower end opening of the ozone supply pipe hung in the polluted gas supply path as the ozone supply means, By setting it at an intermediate level between the lower end of the partition wall of the tank body and the bottom surface of the tank body, the ozone gas or ozone water is appropriately supplied to the treatment liquid,
The sterilizing action of ozone on the polluted gas is properly performed. (10) When the means for vaporizing and supplying the oil into the polluted gas supply path is provided, the vaporized gas of the oil captures dust and soot in the polluted gas and efficiently separates it into the treated liquid. Like (11) With the above items, it is possible to appropriately and inexpensively arrange the small hole group of the perforated plate through which the contaminated gas is passed,
By appropriately disposing the ultrasonic wave generator in the small hole group, an efficient dust collecting and deodorizing device can be realized at low cost.

[Brief description of drawings]

FIG. 1 is a vertical sectional view schematically showing a dust collecting and deodorizing apparatus as a first embodiment of the present invention.

FIG. 2 is a plan view of a perforated plate in the dust collecting and deodorizing apparatus of FIG.

FIG. 3 is a vertical cross-sectional view schematically showing a dust collecting and deodorizing apparatus as a second embodiment of the present invention.

FIG. 4 is a vertical sectional view schematically showing a dust collecting and deodorizing apparatus as a third embodiment of the present invention.

FIG. 5 is a vertical sectional view showing a schematic configuration of a conventional dust collecting deodorizing apparatus.

[Explanation of symbols]

10 Tank body 10a bulkhead 10b Bottom edge of bulkhead 10c bottom 10d communication passage 11 Liquid level sensor 12 Polluted gas processing unit 13 Control device 14 Bottom wall opening 15 tanks 16 Contamination gas supply route 16a Contaminated gas supply port 18 Perforated plate 20 Ultrasonic generator 22 Treated gas recovery port 24 blower 25 Horizontal 26, 26a-26c Small hole 30 Ozone introduction route 30a Bottom opening 34 Liquid level 42 heater 44 oil tank A polluted gas B Treatment liquid C oil D Ozone water α inclination angle

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01D 53/74 B01D 53/34 116F 53/77 116Z F term (reference) 4D002 AB02 BA02 BA05 BA11 BA14 CA06 DA35 DA51 EA03 GA02 GA03 GB01 GB06 GB20 4D032 AA01 BA01 BA03 BA05 BB05 CA01 CA10 DA02

Claims (12)

[Claims] 1. A tank main body containing a processing liquid for performing a dust collecting and deodorizing process on a pollutant gas containing a pollutant such as dust, soot, and odor is contaminated by a partition wall hanging from a top wall of the tank main body. The partition wall is divided into a gas supply path and a polluted gas processing section, a polluted gas supply port is provided above the polluted gas supply path, and a treated gas recovery port is provided above the polluted gas processing section. Is formed between the bottom edge of the tank body and the bottom surface of the tank body, and a communication path between the polluted gas supply path and the polluted gas treatment section is formed, and the polluted gas treatment section extends from the bottom edge of the partition wall to the side wall of the tank body. A perforated plate is provided, and an ultrasonic wave generator that emits ultrasonic waves from below the perforated plate toward the perforated plate is provided, and the hole diameter in the perforated plate is far from the contaminated gas supply path. The dust collecting and deodorizing device is characterized in that the dust collecting and deodorizing device is set so as to increase with the increase. 2. The dust collecting deodorizing apparatus according to claim 1, wherein the perforated plate is arranged so as to gradually incline upward as it goes away from the polluted gas supply path. Deodorizing device. 3. The dust collecting deodorizing apparatus according to claim 2, wherein the angle of inclination of the perforated plate is set in a range of 3 to 7 degrees. 4. The dust collecting and deodorizing apparatus according to claim 1, wherein the perforated plate has a plurality of stages so that the pore size increases stepwise as the distance from the polluted gas supply path increases. A dust collecting and deodorizing device characterized by having a set pore diameter. 5. The dust collecting deodorizing apparatus according to claim 4, wherein the perforated plate is set in three stages of hole diameters such that the hole diameter increases as the distance from the contaminated gas supply path increases, and the ratio of the hole diameters is set. A dust collecting deodorizing device, characterized in that the dust collecting deodorizing device is set so that the gas is closer to the gas supply route in order of 1: 2: 4. 6. The dust collecting and deodorizing device according to claim 1, wherein the total area of the holes of the perforated plate is 5 to 15% of the total area of the plane of the perforated plate. The dust collecting and deodorizing device characterized by being set to. 7. The dust collecting and deodorizing apparatus according to claim 1, wherein a means for pumping and supplying the polluted gas is connected to the polluted gas supply path. , Dust collector and deodorizer. 8. The dust collecting and deodorizing apparatus according to claim 1, wherein a gas suction means is connected to the processed gas recovery port in the upper part of the polluted gas processing unit. A characteristic dust collecting and deodorizing device. 9. The dust collecting deodorizing apparatus according to claim 1, wherein the ultrasonic wave generator has an ultrasonic wave frequency set to 19.5 to 29 kHz. A dust collector and deodorizer. 10. The dust collecting and deodorizing apparatus according to claim 1, wherein an ozone supply means for supplying ozone gas or ozone water is connected to the polluted gas supply path. A dust collector and deodorizer. 11. The dust collecting deodorizing apparatus according to claim 10, wherein the ozone supply means is provided with an ozone supply pipe hung from the upper part of the polluted gas supply path into the polluted gas supply path. The dust collecting deodorizing device, wherein the position of the lower end opening of the ozone supply pipe is set at a level intermediate between the lower end edge of the partition wall and the bottom surface of the tank body. 12. The dust collecting and deodorizing apparatus according to claim 1, further comprising means for vaporizing and supplying oil into the polluted gas supply path. Dust deodorizer.