JP2003284911A - Dust collector, dust collection method and incineration equipment equipped with the dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collection technique effective for raising the quantity of treatment air at the time of dust collection. <P>SOLUTION: A coarse dust extractor 120 constituting a dust collector 100 is equipped with an outer cylinder member 124 formed into a cylindrical shape, an inner cylindrical member 125 and a blade member 26. The blade member 26 has constitution for applying high speed revolving streams to dust-containing air. Since dust in dust-containing air is moved in the centrifugal direction of the outer cylinder member 124 by the centrifugal action of high speed revolving streams, air relatively high in dust concentration and containing dust having a relatively large particle size flows through the peripheral region of the outer cylindrical member 124 while air relatively low in dust concentration flows through the central region of the outer cylindrical member 124. The inner cylindrical member 125 acts on the latter air flow to demarcate and separate dust- containing air into two kinds of different air flows. Since a gap part 127 or a space part 128 has constitution hard to stagnate dust, an increase in pressure loss can be suppressed to the utmost and the quantity of treatment air at the time of dust collection can be increased. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting technique effective for collecting dust-containing gas containing dust and the like.

[0002]

2. Description of the Related Art In recent years, active efforts have been made toward environmental measures, and dust such as dioxins generated in refuse incineration facilities has started to be regarded as a problem. In particular, when cleaning and repairing the incinerator of the refuse incinerator, it is feared that dust such as dioxins remaining in the incinerator may affect the working environment of the worker. Conventionally, for example, when the refuse incinerator is stopped and working in the incinerator, the work is performed while ventilating the incinerator by using a predetermined dust collecting device. In such an environment, dust-containing gas containing dust is generally collected by a dust collecting device equipped with various filter members. By using such a filter member, it becomes possible to obtain high dust collection performance for dust and the like.

[0003]

However, while the above-mentioned conventional dust collecting apparatus can obtain high dust collecting performance, the pressure loss of the filter member is large, so that there is a limit to increase the amount of treated air during dust collecting. there were. Further, the above conventional dust collector has a problem that the filter member is likely to be clogged when collecting dust-containing gas having a high dust concentration, and it is difficult to facilitate the dust collection work. . Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a dust collecting technique effective for increasing the amount of treated air during dust collection.

[0004]

In order to solve the above problems, the dust collector of the present invention is configured as described in claims 1 to 6, and an incinerator equipped with the dust collector of the present invention is It is configured as described in claim 7. The dust collecting method of the present invention is as described in claims 8 and 9. That is,
The invention according to each claim, when collecting the dust-containing gas containing dust, etc., after giving a swirl flow to the dust-containing gas, the flow path of the dust-containing gas, through the partition means This is a technology that enables the amount of air to be treated at the time of dust collection to be increased by using a mechanism for partitioning into a plurality of different dust concentrations.

The dust collecting apparatus according to the first aspect of the invention has a structure in which a dust-containing gas containing dust or the like is received and the dust-containing gas is collected. The term "dust, etc." as used herein means not only dust itself, but also various types of dust, soot, pollen, pathogens such as viruses,
It is intended to widely include tobacco particles and the like. Further, the "dust-containing gas" means not only air in which dust and the like float, but also gas in which dust and the like float in various gases other than air. The dust collector of the present invention includes a swirl flow imparting means, a flow passage,
A partition means is provided. The swirl flow imparting means imparts a swirl flow to the dust-containing gas, and forms thereof include a configuration in which the dust-containing gas acts on a fixed path or member formed in a swirl shape, There is a configuration using movable swirl vanes that swirl with respect to gas. The flow passage has a structure in which the dust-containing gas to which the swirling flow is applied flows. The dust in the dust-containing gas to which the swirl flow is imparted by the swirl flow imparting means moves in the centrifugal direction by the centrifugal action of the swirl flow. For example, when the dust-containing gas to which the swirling flow is applied flows in the cylindrical pipe, the dust concentration is relatively higher on the peripheral side than on the center side, and a large amount of dust having a relatively large particle size is contained. The partitioning means is arranged along the flow direction of the dust-containing gas to which the swirling flow is applied, and partitions the flow passage into a plurality of parts. That is, the partitioning means partitions the cross section of the flow passage into a plurality of regions. Therefore, when the dust-containing gas to which the swirling flow is applied is supplied to this flow passage in which the partitioning means is arranged, the dust-containing gas received in the dust collector is
The partition means separates the gas into a plurality of gases having different dust concentrations. A gas with a relatively low dust concentration can be taken out from the gas separated into compartments to obtain a gas with a high degree of cleanliness. It should be noted that the dust-containing gas having a desired dust concentration can be obtained by appropriately setting the number of divisions and arrangement positions of the flow passages by the dividing means. In the separation processing unit having such a configuration, since dust and the like are less likely to stay at the place where the gas passes, the pressure loss is increased as compared with the filter member configured to collect the dust and the like at the place where the gas passes. Can be prevented. Therefore, it is possible to increase the amount of air to be processed when collecting dust. It should be noted that the term "dust collection" as used in the present invention includes, for example, not only industrial dust collection used for separation / collection of products or prevention of air pollution, but also dust collection in an automobile exhaust system, a specific space such as a clean room. It also broadly includes dust collection in the field of so-called air purification for the purpose of purifying air in the living space.

Here, the separation processing unit according to claim 1 is
It is preferable that the structure is as described in claim 2. That is, in this separation processing section, the first tubular member that constitutes the flow passage and the second tubular member that constitutes the partitioning means are used. The first tubular member is arranged downstream of the swirl flow imparting means, and the second tubular member is inserted into the first tubular member. The second tubular member has a peripheral region between the first tubular member and the second tubular member in the first tubular member and a central region in the second tubular member. Partition into and.
In such a configuration, the dust in the dust-containing gas to which the swirling flow is applied moves toward the centrifugal direction due to the centrifugal action of the swirling flow, and the inside of the first tubular member is closer to the peripheral side than the center side. The state is such that the dust concentration is relatively high and a large amount of dust having a relatively large particle size is contained. Then, this gas is partitioned and separated by the second tubular member into a gas flowing through the central region and a gas flowing through the central region. By taking out the gas in the central region where the dust concentration is relatively low, a gas having a high degree of cleanliness can be obtained. With such a configuration, it is possible to partition the dust-containing gas into a plurality of different dust concentrations by a simple mechanism. Further, according to such a configuration, since there is no concern that dust or the like in the dust-containing gas will stay or be clogged, the dust collection work can be performed smoothly. Further, according to such a configuration, a heat-resistant material can be used for the constituent members, and therefore, even a high temperature dust-containing gas that is difficult to collect with a filter member having a limited heat resistance is good. It is possible to collect various dusts.

The swirling flow imparting means described in claim 2 is preferably configured such that the vane member having a swirling shape is fixed to the flow passage as described in claim 3.
That is, the blade member has a swirl shape, and the blade member itself is a fixed type that does not swirl with respect to the dust-containing gas.
When the dust-containing gas acts on the blade member, a swirl flow is imparted to the dust-containing gas. With such a configuration, a swirl flow can be imparted to the dust-containing gas without using a movable mechanism, so that a swirl flow imparting means having a simpler configuration can be realized.

Here, it is preferable that the separation processing section according to any one of claims 1 to 3 has a structure using a heat-resistant member as described in claim 4. For example, the whole or part of the separation processing section is made of heat resistant steel. As a result, the present invention can be preferably applied to a place where dust collection processing of high-temperature dust-containing gas is performed, such as an incinerator, an exhaust system of an automobile, an exhaust system of an aluminum melting furnace (reflective furnace). Further, by using stainless steel as the heat-resistant member, it is possible to realize an inexpensive dust collector having good recyclability.

Further, in the dust collecting apparatus according to the fifth aspect, the filter processing section is provided downstream of the separation processing section.
The filter processing section is configured to have a filter member that collects dust and the like in the gas by passing the dust-containing gas. For example, a configuration in which a plurality of types of filter members having different performances are connected in series or a plurality of the same type of filter members are connected in parallel can be used. The filter processing unit may be configured to pass each of the plurality of dust-containing gases partitioned by the partitioning means through the filter member, or to a filter member containing only dust-containing gas having a specific dust concentration. It may be configured to pass. By further filtering the dust-containing gas, which has a relatively low dust concentration, received from the separation processing unit, a gas with a higher degree of cleanliness can be obtained. Moreover, in the present invention, since the filter processing unit is provided downstream of the separation processing unit, the separation processing unit filters the dust-containing gas having a reduced dust concentration, and therefore the clogging of the filter member is prevented. It can be avoided as much as possible.

Further, in the dust collecting apparatus according to the sixth aspect, the HEPA filter is provided in the filter processing section. That is, the filter processing unit may be configured to use only the HEPA filter, or the HEPA filter may be used.
A filter member having a collection efficiency lower than that of the filter may be arranged upstream of the filter. The "HEPA filter" referred to here is an ultra-high performance air filter (High Efficiency Particulate Air), and preferably, in a so-called DOP test, the collection efficiency of 0.3 µm particles at a predetermined air volume is 99. .97
%, A super high performance filter that guarantees a pressure loss of 250 Pa or less. With such a configuration, the collection efficiency of dust and the like becomes close to 100%, and it becomes possible to obtain a cleaner gas.

According to the incineration facility of claim 7, claim 1
The dust collectors described in 1 to 6 are provided at locations where the incineration gas that is the dust-containing gas flows. "Incineration facility" here
In addition to the waste incineration equipment, includes equipment for incinerating various incineration objects. As a result, not only when the incinerator is stopped, but also dust and the like in the incineration gas generated during the operation of the incinerator can be collected. In addition, by using a heat-resistant material for the constituent members of the separation processing unit that receives the incineration gas, good dust collection is possible even with high-temperature incineration gas that is difficult to collect with a filter member with limited heat resistance. It becomes possible to do. For example, dust and the like in the incineration gas generated during operation of the refuse incinerator is partly collected by the existing dust collector, and the exhaust gas after dust collection is exhausted from the exhaust facility such as a chimney. There is. In such a refuse incineration facility, by installing the dust collector of the present invention in place of the existing dust collector, or by installing it downstream of the existing dust collector, the incineration gas generated during the refuse incineration is generated. It can be discharged as clean air. Therefore, it is not necessary to install an exhaust system such as a chimney installed in the refuse incineration system.

In the dust collecting method according to the eighth aspect, the partitioning means is arranged in the flow passage through which the dust-containing gas flows during dust collection. The partition means is arranged along the flow direction of the dust-containing gas so as to partition the flow passage into a plurality of sections. Then, the dust-containing gas provided with the swirling flow is supplied to the flow passage. As a result, the dust in the dust-containing gas received in the flow passage moves in the centrifugal direction by the centrifugal action of the swirling flow. Then, the dust-containing air is divided into a plurality of dust-containing gases having different dust concentrations through the dividing means. Therefore, a gas with a relatively high dust concentration can be obtained by taking out a gas having a relatively low dust concentration from the divided gas. According to such a dust collecting method, it is possible to prevent the pressure loss from increasing during dust collection, and thus it is possible to increase the processing air volume during dust collection.

Further, in the dust collecting method according to the ninth aspect, the dust-containing gas having a relatively low dust concentration is supplied to the filter member among the dust-containing gases divided by the dividing means. As a result, a gas having a higher degree of cleanliness can be obtained. Moreover, since the dust-containing gas, which has been divided into compartments through the compartment means and has a reduced dust concentration, is filtered, it is possible to avoid clogging of the filter member as much as possible.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Here, FIG. 1 is a diagram showing a processing flow in the dust collecting apparatus 100 according to the embodiment of the present invention. FIG. 2 is a side view of the dust collecting device 100 and the collecting device 200. 3 and 4 are a front view and a plan view of the dust collector 100, respectively. In the present embodiment, a case will be described in which air containing dust in an incinerator is collected by a dust collector and discharged as purified air (clean air). Dust in the incinerator includes incineration ash, brick dust, dust, floating dust and the like.

As shown in FIG. 1, the dust collecting apparatus 100 of the present embodiment receives air containing dust (hereinafter referred to as "dust-containing air") to perform a predetermined dust collection, whereby the dust-containing air is obtained. The air from which the dust inside is removed (hereinafter referred to as "clean air") is exhausted. The dust collector 100 includes a coarse dust removing device 120, a pre-filter 140, and a main filter 16
0, the active carbon filter 180 is mainly configured.

As shown in FIGS. 2 to 4, the dust collector 100
The dust collector main body 101 is formed in a box shape, and casters 104 that enable self-propelling are attached to four points on the bottom surface thereof. At the upstream side of the dust collector main body 101, a suction port 102 for sucking the dust-containing air and receiving it in the device.
Is provided, and an exhaust port 103 for exhausting clean air after dust collection is provided on the downstream side. Further, the dust collector main body 101 includes a power supply box 105 and a differential pressure gauge 10.
6 are arranged. In the power supply box 105, an operation switch for starting and stopping the suction fan 150, which will be described later, a warning lamp for warning the clogging of the prefilter 140, an earth leakage breaker, and the like are appropriately arranged. The differential pressure gauge 106 detects and displays a pressure difference (differential pressure) before and after the main filter 160. Further, the coarse dust removing device 12
0 and below the pre-filter 140 (in FIG. 2), a dust tray 107 for collecting dust is installed.
At a position above the dust tray 107, a connection port 108 used to connect to the recovery device 200 side described later is provided.

A pushing fan (not shown) for pushing the sucked dust-containing air from the suction port 102 is provided upstream of the suction port 102. This push fan is
The dust collector 100 is installed in a place where the incineration gas flows in the incinerator and through a flexible duct (not shown).
It is adapted to be connected to the suction port 102 of the. By activating this pushing fan in a hurry with a suction fan 150, which will be described later, a flow of air from the suction port 102 to the exhaust port 103 is formed, and dust collection in the incinerator is started.

Inside the main body 101 of the dust collector, the above-mentioned coarse dust remover 120, pre-filter 140, suction fan 150, main filter 160, activated carbon filter 1 are provided.
80 are arranged corresponding to the order of processing. The detailed configuration of each of these units will be described below.

The coarse dust removing device 120 has a function of removing dust from the dust-containing air by separating the received dust-containing air into two types of air having relatively different dust concentrations. The coarse dust removing device 120 corresponds to the separation processing unit in the present invention. Here, the configuration and operation of the coarse dust removing device 120 will be described in detail with reference to FIGS. Figure 5
FIG. 3 is a perspective view of the coarse dust removing device 120. FIG. 6 is a perspective view showing the configuration of the coarse dust removing mechanism portion 123 of the coarse dust removing device 120. FIG. 7 is a sectional view taken along line AA in FIG.

As shown in FIG. 5, the coarse dust removing device 120
Are provided in the housing 121 (in this embodiment, 36
Individual) through holes 122. As shown in FIG. 6 and FIG. 7, each of the through holes 122 has a coarse dust removing mechanism 1
23 is installed. The coarse dust removing mechanism section 123 is configured by an outer cylinder member 124, an inner cylinder member 125, a blade member 126 and the like which are formed in a cylindrical shape. Blade member 12
6 is an outer cylinder member 1 provided with four pieces of screw blades 126a.
It is fixed on the upstream side of 24. Screw blade 126
Each of a has a curved turning shape. Blade member 12
In No. 6, since the screw blade 126a itself does not rotate, there is no need to provide a drive mechanism or the like, and the structure can be simplified. As shown in FIG. 7, the inner tubular member 12
5 has a straight pipe portion 125a and an expanded pipe portion 125b extending downstream from the straight pipe portion 125a.
5a is in an inserted state (insertion length L) inserted downstream of the outer tubular member 124. Also, in this inserted state,
A gap 127 having a distance D is formed between the straight pipe portion 125 a and the outer cylinder member 124. That is, this inner cylinder member 1
25 is configured to partition the inside of the outer tubular member 124 into a center side region and a peripheral side region. The outer cylinder member 124
And the second tubular member, and the inner tubular member 125 constitutes the partitioning means and the first tubular member of the present invention. Also,
The vane member 126 constitutes the swirl flow imparting means in the present invention.

When dust-containing air is introduced into the blade member 126, a high-speed swirling flow is imparted to the dust-containing air by the screw blade 126a. Due to the centrifugal action of this high-speed swirling flow, the dust in the dust-containing air moves in the centrifugal direction, and a flow mainly composed of dust is generated in the peripheral side region of the outer cylinder member 124. That is, the air having a relatively high dust concentration and a large amount of dust with a relatively large particle size flows in the peripheral region of the outer cylinder member 124, and the dust concentration becomes relatively high in the center region of the outer cylinder member 124. Low air flows. When the inner cylinder member 125 acts on such a flow of air, air having a relatively high dust concentration is discharged from the gap 127 corresponding to the peripheral side region, and the air is relatively discharged from the space 128 corresponding to the center side region. Air with low dust concentration will be discharged. As a result, it is possible to take out the air in which the dust concentration in the dust-containing air has decreased, that is, the air after dust collection, from the space 128. The dust that has passed through the gap 127 falls by its own weight toward the dust tray 107, and the air that has passed through the space 128 moves toward the pre-filter 140 according to the flow.

The coarse dust removing device 120 of the present embodiment has a structure in which dust is unlikely to stay in the gap 127 and the space 128, so that it is possible to suppress an increase in pressure loss as with a filter member. Therefore, it becomes possible to increase the treated air volume. In the coarse dust removing device 120 having such a configuration, for example, when the dust-containing air is treated with a treatment air volume of 1,700 m ³ / h, the collection efficiency (by weight method) of dust having a particle diameter of 8 μm or more is 93%, It is possible to obtain a dust collection performance with a dust collection efficiency (gravimetric method) of 98% for particles having a particle diameter of 15 μm or more. Moreover, the pressure loss at that time is 270-280P.
It can be suppressed to about a.

The performance of the coarse dust removing device 120, such as the treatment air volume, the collection efficiency, and the pressure loss, can be changed by appropriately changing the treatment conditions. For example, according to the type of dust-containing gas, the type, size, weight, etc. of dust, the number and shape of the coarse dust removing mechanism 123, more specifically, the inner cylinder member 12
The insertion length L of 5 and the interval D of the clearance 127 can be adjusted. Further, the constituent members of the coarse dust removing device 120 are made of resin or a steel plate when used in a low temperature or room temperature inside the incinerator, and made of heat-resistant steel when used in a high temperature inside the incinerator. It is preferably manufactured.

The prefilter 140 is a coarse dust removing device 1.
The air received from 20 is collected. In this pre-filter 140, a so-called medium-performance filter (filter cloth) having a known configuration is attachable to and detachable from the filter frame. Therefore, it is possible to discard only the medium-performance filter, and it is possible to reduce the cost as compared with the filter in which the filter and the filter frame are integrally configured.
As this medium performance filter, for example, the collection efficiency (GJ
An S colorimetric method) of about 90% can be used.
The dust collected by the prefilter 140 is collected in the dust tray 107. In the present embodiment,
The prefilter 140 is arranged at two places as shown in FIG. With such an arrangement, it is possible to smoothly collect dust without obstructing the flow of air from the coarse dust removing device 120 to the suction fan 150 as much as possible.

The suction fan 150 includes the pre-filter 14
Of the air treated with 0, the air having a relatively low dust concentration is sucked and discharged toward the main filter 160. The capacity of the suction fan 150 is appropriately set based on the treated air volume of the dust-containing air and the pressure loss of the equipment upstream and downstream thereof.

The main filter 160 collects the air received from the pre-filter 140. This main filter 160 is a so-called HEPA (High Efficienc
y Particulate Air) It is configured with a filter. The HEPA filter is composed of, for example, an ultrafine fiber layer, and in a so-called DOP test, the collection efficiency of particles of 0.3 μm at a predetermined air volume is 99.97% or more and the pressure loss is 250 Pa or less. It is a high-performance filter. When the amount of dust collected by the main filter 160 increases and the indicated value of the differential pressure gauge 106 reaches a specified value, the main filter 160 is regenerated (washed). For example, the HEPA filter can be regenerated by blowing high-pressure air from the surface opposite to the collecting surface of the HEPA filter. The means for blowing high-pressure air may be built in the dust collector 100 and the HEPA filter may be regenerated by this means, or the HEPA filter removed from the apparatus may be regenerated by an air gun operated by an operator.

The activated carbon filter 180 performs the final treatment of the air received from the main filter 160. The activated carbon filter 180 is configured to use fibrous activated carbon having a high adsorption rate and adsorption performance for air dust and odor. The pre-filter 140, the main filter 160, and the activated carbon filter 180 constitute the filter processing section of the present invention.
In the present embodiment, since the processing by the various filters is performed after the processing by the coarse dust removing device 120, it is possible to suppress the frequency of clogging of the various filters.

By performing the above processing, clean air is exhausted from the exhaust port 103. This clean air is, for example, JIS Class 5 (particle diameter 0.5 μm
The upper limit concentration of the above-mentioned suspended fine particles is 3,520 particles / m ³ ) and the degree of cleanliness. As described above, by using the dust collector 100 of the present embodiment, it is possible to exhaust clean air having a high degree of cleanliness.

Next, the structure and operation of the recovery device 200 will be described with reference to FIG. This recovery device 200 is
The dust collected by the dust collector 100 is recovered. As shown in FIG. 2, the recovery device main body 201 of the recovery device 200 is formed in a box shape, and casters 204 that enable self-propelling are attached to four positions on the bottom surface thereof.
The recovery device main body 201 includes a suction port 202 and an exhaust port 2.
03, a power cord 205 for supplying drive power to a vacuum mechanism section 210, which will be described later, an inspection lid 206 for inspecting the inside, a dust tray 207 for collecting dust, and the like. The suction port 202 is connected to the connection port 108 of the dust collector 100 via the connection hose 300. Further, a vacuum mechanism section 210 and a filter section 220 are mounted inside the recovery apparatus main body 201. The vacuum mechanism unit 210 vacuum-sucks dust-containing air generated on the side of the dust collector 100, and collects dust in the dust tray 20.
It is configured to recover to 7. Filter part 220
Has a configuration using a HEPA filter similar to the main filter 160 of the dust collector 100. Therefore, the air containing dust that cannot be completely collected in the dust tray 207 is purified when passing through the filter unit 220, and is exhausted from the exhaust port 203 as clean air.

The collecting device 200 is the dust collecting device 1.
It is preferable to use it in accordance with the operation of 00. That is, the dust collecting device 200 always collects dust while the dust collecting device 100 is in operation. As a result, it is separated by the coarse dust removing device 120 and the pre-filter 140 of the dust collector 100,
It is possible to directly suck and collect the dust that falls by its own weight toward the dust tray 107. Therefore, the amount of dust accumulated on the dust tray 107 is suppressed, and the dust tray 10
7 can be miniaturized. Further, by sucking the dust collection device 100 side by the collection device 200, it is possible to prevent dust inside the dust collection device main body 101 from being blown out of the device due to a change in pressure balance.

As described above, according to the present embodiment, it is possible to prevent the pressure loss from increasing by using the coarse dust removing device 120 having a structure in which dust or the like is less likely to stay at the place where the air passes. Therefore, it is possible to increase the amount of treated air during dust collection. Since this coarse dust removing device 120 has a configuration in which there is no concern that dust or the like will accumulate or be clogged in the passage through which the dust-containing air flows like a filter member, the dust collecting device 120 is used to collect dust-containing air. Work can be carried out smoothly. Further, by disposing this coarse dust removing device 120 upstream of a filter member such as the pre-filter 140 or the main filter 160, it becomes possible to suppress the occurrence frequency of clogging of the filter member as much as possible.
The dust collection work can be performed smoothly. Further, the coarse dust removing device 120 includes the outer cylinder member 124 and the inner cylinder member 12.
5, the blade member 126 and the like are used, and the structure can be simplified. In particular, since the blade member 126 is not configured to rotate the screw blade 126a itself, it is possible to simplify the configuration without providing a drive mechanism or the like. In addition, by manufacturing the constituent members of the coarse dust removing device 120 from heat-resistant steel, good dust collection is possible even with a high-temperature dust-containing gas that is difficult to collect with a filter member having a limited heat resistance. Is possible. Further, according to the present embodiment, since the HEPA filter is used as the main filter 160, the dust collection efficiency is close to 100%, and clean air with a high degree of cleanliness can be obtained.
Further, by using the collection device 200 for collecting the dust collected by the dust collection device 100 in accordance with the operation of the dust collection device 100, the amount of dust accumulated on the dust tray 107 is suppressed, and the dust tray 107 is downsized. Can be converted. Further, it is possible to prevent dust inside the dust collector main body 101 from blowing out of the device.

[Other Embodiments] The present invention is not limited to the above embodiments, and various applications and modifications are conceivable. For example, each of the following modes to which the above-described embodiment is applied can be implemented.

(A) In the above embodiment, the case where the fixed screw blade 126a is used in the coarse dust removing mechanism section 123 for imparting a swirling flow to the dust-containing air in the coarse dust removing apparatus 120 has been described. It is also possible to use a movable swirl vane that swivels itself.

(B) In the above embodiment, the case where the coarse dust removing device 120 separates the dust-containing air into two types of air having different dust concentrations is described. It may be configured to separate into more than one type of air. Such a configuration can be achieved, for example, by using a form in which a plurality of inner cylinder members are inserted into the outer cylinder member 124.

(C) Further, in the above-described embodiment, 3 such as the pre-filter 140, the main filter 160 and the activated carbon filter 180 are provided downstream of the coarse dust removing device 120.
Although the case where the filter members of different types are provided has been described, these filter members may be omitted. When a filter member is provided downstream of the coarse dust removing device 120, at least one of the three types of filter members may be used.

(D) Further, in the above embodiment, the case where the present invention is applied to the dust collecting technique in the incinerator has been described. Of course, the dust collecting technique other than the incinerator, for example,
The present invention can also be applied to an air cleaning technique for removing dust, bacteria, etc. floating in a building. Further, the present invention can be preferably applied to an exhaust system of an aluminum melting furnace (reflective furnace).

The present invention can also be applied to a technique for removing dust (such as particulates) in dust-containing gas discharged from an engine of an automobile or the like. This embodiment is shown in FIG.
And it demonstrates based on FIG. here. FIG. 8 is a diagram showing a configuration of an exhaust gas treatment device 420 mounted on an exhaust system of an automobile. FIG. 9 is a sectional view taken along the line BB in FIG. In these figures, the same elements as those in FIGS. 6 and 7 are designated by the same reference numerals. As shown in FIGS. 8 and 9, an exhaust gas treatment device 420, which is an embodiment of the dust collector of the present invention, is installed between the catalyst mechanism part 410 and the muffler mechanism part 430 in the exhaust system of an automobile. It The exhaust gas treatment device 420 is used in the coarse dust removing device 12
A total of seven coarse dust removing mechanism parts 123 similar to 0 are accommodated in the main body part 422. The number, size, and the like of the coarse dust removing mechanism 123 can be appropriately set according to the processing air volume of the dust-containing gas. Further, a dust recovery unit 424 is installed below the main body 422. The dust collecting portion 424 is configured to be attachable to and detachable from the body portion 422, and has an area inside which dust collected by the body portion 422 can be deposited. The exhaust gas treatment device 420 is made of stainless steel having heat resistance capable of withstanding the temperature of the exhaust system. By using stainless steel, an inexpensive and highly recyclable exhaust gas treatment device can be realized. In such a configuration, the dust-containing gas that has been discharged from the engine and processed by the catalyst mechanism unit 410 is subjected to dust collection processing when passing through the exhaust gas processing device 420, as in the coarse dust removing device 120. The exhaust gas that has been subjected to this dust removal process is exhausted to the outside through the muffler mechanism unit 430, and the dust that has been separated by the exhaust gas treatment device 420 is recovered by the dust recovery unit 424. The dust collecting portion 424 is cleaned by periodically removing the dust collecting portion 424 from the main body portion 422. With such a configuration, since the exhaust gas treatment device 420 has a configuration in which there is no concern that dust will be clogged in the passage through which the dust-containing gas flows, dust collection processing of the dust-containing gas is performed using the exhaust gas treatment device 420. It can be done smoothly.

[0038]

As described above, according to the present invention,
It is possible to realize a dust collection technique that is effective in increasing the amount of treated air during dust collection.

[Brief description of drawings]

FIG. 1 is a diagram showing a processing flow in a dust collector 100 according to an embodiment of the present invention.

FIG. 2 is a side view of a dust collector 100 and a collection device 200.

3 is a front view of the dust collector 100. FIG.

4 is a plan view of the dust collector 100. FIG.

5 is a perspective view of a coarse dust removing device 120. FIG.

6 is a perspective view showing a configuration of a coarse dust removing mechanism portion 123 of the coarse dust removing device 120. FIG.

7 is a cross-sectional view taken along the line AA of FIG.

FIG. 8: Exhaust gas treatment device 4 installed in the exhaust system of an automobile
It is a figure which shows the structure of 20.

9 is a sectional view taken along the line BB in FIG.

[Explanation of symbols]

100 ... Dust collector 120 ... Coarse dust removing device 140 ... Pre-filter 150 ... Suction fan 160 ... Main filter 180 ... Activated carbon filter 200 ... Recovery device 210 ... Vacuum mechanism 220 ... Filter section 300 ... Connection hose 420 ... Exhaust gas treatment device 422 ... Main body 424 ... Dust recovery section

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F23J 15/00 F23J 15/00 ZF term (reference) 3K065 AA24 AB01 AC01 HA03 3K070 DA07 DA28 DA32 4D053 AA03 AB01 BA04 BB06 BC03 BD02 CA22 CB13 CB14 CC01 CD12 DA02 DA06 4D058 JB04 JB24 JB41 KB11 MA15 PA04 QA01 QA08 RA01 RA14 RA19 SA20 TA03

Claims (9)

[Claims] 1. A dust collector for collecting dust-containing gas containing dust and the like, comprising a separation processing unit for separating the dust-containing gas into a plurality of particles having different dust concentrations, wherein the separation processing unit comprises: A swirl flow imparting means for imparting a swirl flow to the dust-containing gas, a flow passage for circulating the dust-containing gas to which the swirl flow is imparted, and a flow passage arranged in the flow passage along the flow direction of the dust-containing gas. A dust collecting device comprising: a partitioning unit configured to partition the flow passage into a plurality of sections. 2. The dust collecting apparatus according to claim 1, wherein the separation processing unit is disposed downstream of the swirl flow imparting unit and constitutes the flow passage, and a first tubular member, A second tubular member that is inserted into one tubular member and constitutes the partitioning means. 3. The dust collecting apparatus according to claim 1 or 2, wherein the swirl flow imparting means is configured such that a blade member having a swirl shape is fixed to the flow passage. Dust collector. 4. The dust collector according to any one of claims 1 to 3, wherein the separation processing section has a configuration using a heat-resistant member. 5. The dust collector according to claim 1, further comprising a filter processing unit downstream of the separation processing unit for further filtering the dust-containing gas processed by the separation processing unit. A dust collecting device characterized by being equipped with. 6. The dust collecting apparatus according to claim 5, wherein the filter processing unit is provided with a HEPA filter. 7. An incineration facility, wherein the dust collector according to any one of claims 1 to 6 is provided at a location where the incineration gas that is the dust-containing gas flows. 8. A dust collecting method for collecting dust-containing gas containing dust or the like, wherein the flow passage through which the dust-containing gas flows has a partition means for dividing the flow passage into a plurality of parts. The dust-containing gas, which is arranged along the flow direction and is provided with a swirl flow, is supplied to the flow passage, whereby the dust-containing gas received in the flow passage is passed through the partitioning means to contain a plurality of dust-containing gases having different dust concentrations. A method for collecting dust, which is characterized by separating the dust into compartments. 9. The dust collecting method according to claim 8, further comprising supplying a dust-containing gas having a relatively low dust concentration among the dust-containing gases partitioned and separated through the partition means to the filter member. , A dust collecting method characterized by performing a filter treatment through this filter member.