JPH02298306A - Device for filtering dust-containing fluid and method thereof - Google Patents

Abstract

PURPOSE:To remove dust continuously at high efficiency by continuously supplying and discharging filter medium so that the filter medium is caused to flow downwardly while the dust-containing fluid upwardly to form a countercurrent flow therebetween. CONSTITUTION:An upper space and a lower space are formed in a vessel 1, while a filter medium supporting structure 3 is disposed horizontally in an interposed section between the spaces so that filter medium 13 is mounted on the structure to form a filter layer 2. A means 7 to feed the filter medium 13 into the upper space and a discharge port 11 for dust-removed fluid are provided in the upper space, while filter medium cutting-off means 4, 6 which are movably located under the filter layer 2 and have openings are provided to support the filter medium 13. Further, a means 12 for discharging the filter medium 13 to the outside of the vessel 1 is disposed in the lower space, while a means 9 to feed dust-containing fluid into the vessel 1 is provided. As a result, dust removal can be performed continuously at high efficiency.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure and method of equipment for desulfurization and dedusting of coal gasification gas, exhaust gas of high-pressure circulating fluidized bed boilers, etc., or dedusting of sewage, etc. It is related to.

[Prior art] Fig. 12 is an example of the first prior art, which is disclosed in Japanese Patent Application Laid-Open No. 53-914.
This is an example of the dust collection method and device described in Publication No. 17. In FIG. 12, 51 is a dust collector main body, 52 is a dust-containing gas inlet, 53 is a clean gas outlet, 54 is a support, 55 is a granular filter material, 56 is a dust collection layer, 57 is a granular filter material supply hopper, 87 is a discharger. The dust-containing gas introduced from the dust-containing gas population 52 is collected in the moving bed type dust collection bed 56 filled with the granular filter material 55 that is continuously supplied from the granular filter material supply hopper 57. The dust is removed by flowing through the dust layer 56 at right angles to it and is discharged as clean gas from the clean gas outlet 53. On the other hand, dust in the gas is collected by adhering to the surface of the granular filter material while flowing through the dust collection layer 56, or by being held in the spaces between the filter materials. The filter material 55 in the form of particles to which dust has adhered is continuously or intermittently extracted from the dust collector main body 51 by operating the ejector 87.

Figures 13 and 14 show an example of the second prior art,
The dust collection and denitrification equipment described in Publication No. 2-115775,
FIG. 13 is a side sectional view of the main body of the dust collector/denitrification device, and FIG. 14 is a partially enlarged view of the catalyst layer portion in FIG. 13. 13th
~ In Figure 14, 58 is an outer cylinder, 59 is a cyclone, and 6
゜ is an inner cylinder, 61 is an exhaust gas inlet, 62 is a dust removal valve, 63 is a partition plate, 64 is a catalyst layer, 65 is a reducing agent addition means, 66 is a dust removal section, 67 is a denitrification section, 68 is a clean gas outlet,
6 is a catalyst supporting means. In the conventional example, the outer cylinder 5
A cylindrical cyclone 59 is connected to the lower part of the cyclone 8, and the dust removal gas passage in the cyclone 59 and the dust removal gas passage in the upper outer cylinder 58 are integrated to form an inner cylinder 60.

The space formed by the outer cylinder 58 and the inner cylinder 60 is filled with a catalyst to form a catalyst layer 64. A reducing agent addition means 65 is inserted in the middle of the six catalyst layers 64, and the supply gas NH3, H2S depending on the properties.

By injecting a reducing agent such as H2+CO, CH, etc. into the catalyst layer 64, the upper layer of the catalyst layer 64 functions as a dust removal section 66, and the lower layer functions as a denitrification section 67. Catalyst layer 6
At the lower end of 4, a privately available catalyst is placed on top, and the catalyst is made of a perforated plate or wire mesh that does not allow the catalyst to fall or impede the flow of gas passing through the catalyst. A carrier means is provided.

The exhaust gas containing large particle size dust with a high dust concentration introduced into the cyclone 59 from the exhaust gas population 61 is transferred to the cyclone 59.
9, the large particle size dust is collected in the primary collection J! ! The latter exhaust gas passes through the inner cylinder 60 and into the catalyst N64.

When nitrogen oxides exist in the exhaust gas and need to be removed, the reducing agent is injected into the catalyst from the reducing agent addition means 65, and the upper layer of the catalyst layer 64 acts as a dust removal section 66 to remove V& Fine-grained dust is secondarily collected, while the lower layer serves as a denitration section 67 to decompose nitrogen oxides in the exhaust gas into N2, which is discharged from a clean gas outlet 68. When dust accumulates on the upper layer of the catalyst layer 64 due to long-term dust removal work and gas flow resistance increases, the clean gas outlet section 68
Pressure air for backwashing is fed into the lower end side of the catalyst layer 64 from the catalyst layer 64 . The injected pressurized air flows through the catalyst/[264] from the bottom to the top through the catalyst supporting means 69, and the dust adhering to the catalyst is brushed off and suspended in the air before being transferred to the inner cylinder 60. The air reaches the hopper section of the lower cyclone 59 through the cyclone 59, and most of the suspended dust falls onto the hopper by decreasing the flow velocity due to the increase in cross-sectional area and changing the direction of the air flow, and then is sent to the outside through the exhaust gas population 61. After being further cleaned by other dust collectors, etc., it is discharged into the outside air.

Figures 15 to 17 are examples of the third prior art, and are
87070, which shows the industrial gas dust removal method described in the publication, FIG. 15 is an overall schematic system diagram of the dust removal device in the conventional example, and FIG. 16 is a side view of a packed tower with an improved gas introduction section inside. The sectional view, FIG. 17, is a'a in FIG. 16.
It is a sectional view taken along the line. In Figs. 15 to 17, 70 is a packed column, 71 is a packing material, 72 is a gas introduction pipe, 73 is an outlet inside the gas tower, 74 is a tank, 75 is a clean gas outlet pipe, 76 is a packing discharge port, 77 is a filling discharge control damper;
78 is an exhaust storage tank, 79.80 is a damper, 81 is a dryer, 82 is a sieve machine, 83 is a gas generation source, 84 is an exhaust fan, 85 is a stripping tower, and 86 is a gas distribution nozzle. The dust-containing gas generated in the gas generation source 83 is fed into the vicinity of the bottom of the packing 71 filled in the packed tower 70 through the gas introduction pipe 72. A clean gas outlet conduit 75 is housed in the upper end of the packed tower 70 , and the clean gas outlet conduit 75 communicates with a diffusion tower 85 via an exhaust fan 84 . The dust-containing gas introduced near the bottom of the packing 71 filled in the packed tower 70 is sucked by the exhaust fan 84 and rises through the packing 71, causing dust to adhere to the surface of the packing 71. The gas becomes clean and the clean gas outlet conduit 75
, are discharged into the atmosphere from the diffusion tower 85 through the exhaust fan 84. Further, in the conventional example, the gas containing dust introduced into the filling 71 rises through the filling 71 while being distributed as uniformly in the cross section as possible, and comes into contact with all the filling 71 effectively to remove the dust. As shown in FIGS. 16 and 17, a gas dispersion nozzle 86 is installed at the tip of the gas introduction pipe 72 so that the dust-containing gas is deposited and collected, and the dust-containing gas is uniformly distributed across the cross-section of the filling 71. We are trying to

[Problems to be Solved by the Invention] As described above, in the conventional technology, a fluid containing dust is passed through a layer of filtering material to cause the dust to adhere to and be collected by the filtering material, and the cleaned driftwood is discharged. It was possible to do so.

Furthermore, it was possible to remove dust from the filter material used for dust removal and return it to the dust removal device again to form a predetermined filter material layer for reuse.

However, in the above-mentioned conventional technology, in the case of a structure in which dust-containing fluid is filtered by flowing it orthogonally to a vertically moving downward moving layer, as in the first prior art example, the dust-containing fluid is supplied from an upper hopper. Based on the fact that the filtration material always flows down while being in contact with dust-containing gas, the amount of dust adhering to the filtration material is small at the top of the dust collection layer, and the amount of dust adhering increases toward the bottom. The residual dust concentration of the gas after passing through the dust collection layer is uneven in the vertical direction of the dust collection layer, and in order to correct this unevenness, it is necessary to increase the flow rate of the filter material, which increases the circulation power. At the same time, the concentration of the filter material becomes uneven when it falls, and problems such as the occurrence of spots in the blow-out of dust-containing gas occur.

Next, in the second prior art example, since the filter material is a stationary type filled in a horizontal container, dust accumulates in the catalyst layer as the dust-containing gas is filtered, increasing ventilation resistance on the gas side. This reduces the processing efficiency of dust-containing gas. As a countermeasure, the supply of dust-containing gas is stopped, and a clarified fluid such as pressurized air is blown from the bottom of the filtration layer to perform backwashing.The fluid containing the removed dust is discharged outside the filtration device and stored separately. Since the treatment was carried out, the filtration apparatus had to operate in batch mode, which had the disadvantage that it was not possible to process the dust-containing gas continuously.

Furthermore, in the third prior art example, the bottom part 14 of the filling
Gas containing dust is fed into the vicinity so that the cross section is uniform, and the cleaned gas is discharged from the top, and the filling is discharged from the bottom, where there is a large amount of attached dust, to regenerate the clean filling. By refilling from the top, it is possible to perform effective dust removal. However, in the third prior art example, the packing material with attached and collected dust is removed from the central part of the lower part of the packed tower. The filling material near the position in contact with the surface of the hopper is difficult to flow down, and the filling material cannot be used effectively.

Furthermore, in a filtration device having a structure in which a dust-containing gas blowing nozzle is inserted into the vertically moving downwardly moving filtration layer, it is difficult for dust to adhere uniformly to the filtration material due to the movement of the filtration material. The flow of the filter medium becomes unstable due to resistance caused by the nozzle and the ejected gas, which is not preferable.

An object of the present invention is to eliminate such problems and to provide a dust-containing fluid filtering device and method that can continuously remove dust with high efficiency.

[Means for Solving the Problems] The above objects are achieved by the dust-containing fluid filtration device and method thereof set forth in the claims. That is, 1. An upper space and a lower space are formed in the container, a filtration material support structure is constructed horizontally in the middle part sandwiched between the two spaces, and a filtration material is placed thereon to form a filtration layer; A means for introducing a filter material into the space and a discharge port for the fluid after dust removal are provided, a means for cutting out the filter material is provided at the bottom of the filtration layer and is movable to carry the filter material and has an opening. A filtration device for dust-containing fluid, which includes a means for discharging a filtering material out of a container and a means for feeding a dust-containing fluid into the container.

2. A plate-like object that can move horizontally while supporting a filter medium, and a position where the filter medium cutting means prevents the filter medium carried by the plate-like object from moving as the plate-like object moves. Claim 1. A filtration device for a dust-containing fluid as described above.

3. Claim 1, wherein the dust-containing fluid is introduced into a space below the filtration layer in the container. 8i dust fluid filtration device as described.

4. Claim 1. The support structure for the filter medium is made of a perforated plate-like material or a net-like material having apertures no larger than the filter material.
A filtration device for a dust-containing fluid as described above.

Claim 1. The support structure for the 5° filter material comprises a louver-like structure. A filtration device for a dust-containing fluid as described above.

6. An upper space and a lower space are formed in the container, a filtration material support structure is constructed horizontally in the middle part sandwiched between both spaces, a filtration material is placed thereon to form a filtration layer, and the filtration material is placed in the upper space. A means for introducing the filter material and a discharge port for the fluid after dust removal are provided, a means for cutting out the filter material is provided at the bottom of the filtration layer, the means is movable and has an opening for supporting the filtration material, and the filtration material is disposed in the lower space. A means for discharging the dust-containing fluid to the outside of the container is provided, and a means for supplying the dust-containing fluid into the container is provided, and the amount of filtering material input is adjusted in response to changes in the flow rate of the dust-containing fluid being sent and changes in the dust-containing concentration. and a filtration method for dust-containing fluid that removes dust by changing the operating method for cutting out the filter material.

It is.

The effects of the present invention will be explained below based on examples.

[Example 1] Figures 1 to 7 are drawings related to a dust-containing fluid filtration device based on the present invention, in which Figure 1 is a side sectional view of the filtration device, and Figures 2 to 3 show the operation of the gate plate in Figure 1. Figure 4 is a side cross-sectional view of the vicinity of the gate plate when a baffle plate different from that shown in Figures 2 and 3 is installed, and Figure 5 is a diagram showing the behavior of the filter media when the filter media support structure has a louver structure. FIGS. 6 and 7 are partial side sectional views in a certain case, in which the filtering medium support structure is composed of a perforated plate-like member.

Figures 8 to 11 are diagrams showing the structure of a filter material supply section and a discharge section for making the dust-containing fluid filtration device based on the present invention work more effectively, and Figure 8 shows a distribution pipe with filtration. The filtration material supply device used; Fig. 9 shows the filtration material supply device using a screw conveyor, Fig. 10 shows the filtration and discharge device using a filtration material sound collection tube, and Fig. 11 shows the filtration and discharge device using a screw conveyor. FIG. 2 is a schematic diagram of the device.

In Figures 1 to 11, 1 is a container, 2 is a filter layer, 3.3
°, 3゛ are filter media support structures, 4, 4' are gate plates, 5
is a gate plate support mechanism, 6 is a baffle plate, 7 is an input port with filtration,
8 is a distribution pipe with filtration, 9 is a dust-containing fluid inlet, 10 is a dust-containing fluid distribution pipe, 11 is a dust removal fluid discharge port, 12 is an ampere-containing filter discharge port, 13 is a filter material, and 14 is a baffle plate support mechanism. , 15 is a filter medium supply tank, 16 is a screw feeder, 17 is a collecting pipe with filtration, and 18 is a perforated plate-shaped filter medium support structure.

First, in FIG. 1, a filter material 13 is introduced into a container 1 from a filter-equipped distribution pipe 8 through a filter material input lower, and is deposited on a filter material support structure 3 to form a filter layer 2. 11! E
A baffle plate 6 is housed in the lower part of the overfill support structure 3, and a gate plate 4 placed on a gate plate supporter tR5 is further disposed in the lower part. As shown in FIGS. 2 and 3, the gate plate 4 has a structure that allows it to slide horizontally using a hydraulic cylinder or an air cylinder. When the gate plate 4 is in the position shown in FIG. Filter material 13
is at rest, maintaining its angle of repose. A dust-containing fluid inlet 9 is provided in a space formed below the filtration layer 2 in the container 1.
The dust-containing fluid sent from the dust-containing fluid distribution pipe 10 through
After the coarse dust falls to the lower part of the container 1, it is turned upward and is removed while passing through the filter layer 2 through the filter material 13 on the gate plate 4, and becomes a sufficiently clean fluid to be discharged from the dust removal fluid outlet in the upper part. 11 to the outside. The dust-containing fluid passes through the filtration layer 2.
When passing through the inside, an angle of repose is first formed on the gate plate 4 so that the largest amount of dust is deposited on the free surface of the filtration medium 13 which is in a stationary state, and then the dust is deposited on the filtration medium 13 as it approaches the dust removal fluid outlet. The number of violets of attached dust also gradually decreases. By horizontally moving the gate plate 4 to the position shown in FIG. 3 using a hydraulic cylinder or an air cylinder, the filter material on the gate plate 4 is relatively pushed out by the baffle plate 6, and the angle of repose is adjusted. When the filter material 13 collapses and falls to the bottom of the container 1 sequentially from the lower part where the amount of dust adhesion is large, the gate plate 4 is moved to a position where the filter material 13 does not fall continuously in large quantities, and the position is set within that range. . After the filtering material 13 on the gate plate 4 is replaced with a filtering material 13 with less dust adhesion, the gate plate 4 is returned to the original position shown in FIG. 2, and the filtering material 13 is made to rest on the gate plate 4. . Filter material 13
Since the amount of dust adhering to the surface changes depending on the flow rate of the dust-containing fluid to be treated or the dust concentration, for example, the differential pressure between the upper space and the lower space of the filtration layer 2 in the container 1 is measured, and based on that, the gate plate 4 is It is possible to control the amount of dust adhering to the filtering material 13 in the ti passage 12 so that it is always within a certain range by changing the frequency of movement of the filtering material 13. Gate plate 4
In order to drop the upper filter material 13 to the bottom of the container 1, in addition to moving the gate plate 4 in the horizontal direction as described above, it is of course possible to make the gate plate 4 swing or vibrate. It is. FIG. 4 shows an example in which the baffle plate 6 is arranged near the center of the lower opening of the filter material support structure 3 by the baffle plate support mechanism 14.
．． Due to the horizontal movement of 4 degrees, the filter material 13 on the gate plate 4 falls not only in one direction as in FIG. 3 but also in two directions. FIG. 5 shows an example in which the filtering material support structure on the upper part of the gate plate 4 has a multi-stage louver structure such as filtering material supporting structures 3, 3' and 3'''.

As a result, the dust-containing fluid sent into the container 1 is
In addition to the free surface on the gate plate 4 as shown in the figure,
Since an angle of repose is formed between each louver and it is possible to enter the filter material 13 from the exposed free surface, even when the flow rate of the dust-containing fluid or the dust content increases, the gate plate By using this in combination with the increase in the operating frequency of 4, it is possible to process. 6 and 7 are diagrams showing still another example of the filtering material support structure, in which the filtering material supporting structure on the upper part of the gate plate 4 is formed by a perforated plate such as a wire mesh or grid having a gap not larger than the filtering material. This is an example of the configuration. As a result, the dust-containing fluid sent into the container 1 is
~ As shown in Figure 4, dust-containing fluid enters the filter medium 13 not only through the free surface on the gate plate 4 but also through the holes in the wire mesh, grid, etc. can cope with increased flow rates or increased dust content.

Figures 8 and 9 show that the upper surface of the filter medium fed into the container 1 is made as level as possible to prevent the dust-containing fluid from blowing through due to the uneven thickness of the filter layer 2, thereby increasing the dust removal efficiency. It is a figure which shows the example of a case. First, FIG. 8 shows that by disposing a large number of distribution pipes 8 with filtration from the outlet m of the lower part of the filtration medium supply tank 15 to the entire surface of the filtration layer 2 in the container 1, filtration can be performed without requiring any particular power. This is intended to make the thickness of layer 2 uniform. Next, in FIG. 9, one or more screw conveyors are arranged on the surface of the filtration layer in the container 1, and the filtration material flowing down from the filtration material supply tank 15 is transferred in the axial direction of the screw conveyor and filtered. An example is shown in which the upper surface of the layer 2 is leveled to prevent the dust-containing fluid from blowing through, thereby increasing the dust removal efficiency. One or more height measuring devices are arranged on the upper surface of the filtration layer 2, and based on the measurement results, the amount of filtration material supplied from the filtration material supply tank 15 is adjusted, or the driving speed of a screw conveyor, etc. is adjusted. is changed so that the filtration layer 2 can always maintain a constant thickness and a flat surface.

Figures 10 and 11 show that the filter material 13 that has fallen to the bottom of the container 1 is prevented from adhering to and accumulating on the lower sloped wall surface of the container 1 and obstructing smooth discharge, so that dust can be continuously and properly collected. FIG. 10 shows an example in which a large number of outlet ports for the filter media 13 are formed at the bottom of the container 1 to collect dust and uniformly collect the filter media 13 that has fallen to the bottom. tube 17
FIG. 11 is a diagram showing the case where one or more screw conveyors are disposed at the bottom of the container 1 and the filtering material 13 is mechanically transferred to the discharge port. This makes it unnecessary to install a discharge pipe having a large inclination angle when discharging the IF material 13 on which dust has been collected and adhered, as in the conventional case, and it is possible to significantly lower the installation position of the container 1.

In addition, as shown by the dashed line in FIG. 1, even when the dust-containing fluid distribution pipe 10 is inserted into the filtration layer 2 instead of the lower part of the container 1, the filtration material with a high concentration of dust adhered to it. It is possible to sequentially discharge the liquids from the gate plate 4 starting from 13, without losing the features of the present invention.

In addition to the original dust removal function, the dust-containing fluid filtration device based on the present invention uses alumina pellets, iron ore, quicklime, etc. as the filter material to react with substances in the fluid or to remove specific substances from the fluid. A function that allows substances to react with the filter media and be removed from the filtration device, or alternatively, reacts substances in the fluid using catalysts that degrade relatively quickly or reactive agglomerated solids, Alternatively, it can easily function as a reactor for reacting a specific substance in a fluid with the solid itself, and can be widely used as a multipurpose facility.

Furthermore, heat exchange between the granular solids and the fluid is carried out by using low-temperature granular solids in place of the filter material and bringing them into contact with the high-temperature fluid, or by bringing the high-temperature granular solids into contact with a low-temperature fluid. It also has the function of being used as a heat exchanger.

[Effects of the Invention] As is clear from the above embodiments, the present invention has the following effects. That is, (1) continuous processing of the dust-containing fluid is made possible by continuously supplying and discharging the filter material without using the conventional notching process, which can bring about a revolutionary effect on the production process side.

■By making the flow of the filter medium from top to bottom and the flow of dust-containing fluid from bottom to top, allowing both to form a self-flow, it is possible to discharge from the bottom of the filter medium, which has a large amount of dust attached. The amount of movement of the filter medium can be reduced. Along with this, the power required to move the filter material is reduced, and
High filtration performance can be achieved by allowing the dust-containing fluid to flow in from the side of the filter medium that is pre-coated with highly concentrated dust.

(2) Since the filtration layer is uniformly flowed down or supplied in a plane, the density of the filtration layer is uniform in a plane, and there is no deterioration in performance due to blow-out of dust-containing gas, etc. Furthermore, since the filter layer is thick and uniform, the dust removal efficiency does not change much with sudden changes in the dust-containing fluid flow rate or dust-containing concentration.

■The thickness of the filtration layer can be made uniform and the surface of the filtration layer can be leveled when feeding and discharging the filtration material, and the height of the entire filtration device has been reduced by adopting a large-area flat method for the filtration layer inside the container. This made it possible to reduce construction costs.

(2) Since the structure does not apply a large load to the sliding contact parts between the filter material and the gate plate, filter material support structure, baffle plate, etc., there is less wear and tear on the filter material, which is economically advantageous.

■Since the load applied to the gate plate that discharges the filter material is small, the power cost required for discharge is reduced.

■By changing the movement frequency of the gate plate and the supply amount of filter material in response to changes in the flow rate or dust content of the dust-containing fluid, it is possible to quickly and accurately obtain the optimal filtration condition. .

■Since the structure allows good dust collection effects to be obtained without requiring particularly high machining precision for the entire filtration device, including the spacing between the filter media discharge part gate plate and the filter media support structure. , it is possible to reduce the manufacturing cost of the filtration device.

[Brief explanation of the drawing]

1 to 7 are drawings related to a B-containing fluid filtration device based on the present invention, FIG. 1 is a side sectional view of the filtration device, and FIGS. 2 to 3 are diagrams showing the operation of the gate plate and the filtration material in FIG. Figure 4 is a side sectional view of the vicinity of the gate plate when a baffle plate different from that shown in Figures 2 and 3 is installed, and Figure 5 is a diagram showing the behavior of the filter medium when the support structure has a louver structure. Side sectional view, No. 6-7 [1
iff is a partial side sectional view of the field in which the filter medium support structure is made of a perforated plate-like material. 8 to 11 are diagrams showing the structure of a filter material supply section and a discharge section for making the dust-containing fluid filtration device according to the present invention function more effectively. 12 to 17 are examples of prior art. 1... Container, 2... Filtration layer, 3.3°,
3゛. ...Filtering medium support structure, 4.4'...
Gate plate, 5...Gate plate support mechanism, 6...
...Baffle plate, 7...Inlet with filtration, 8...
...Distribution piping with filtration, 9...Dust-containing fluid inlet,
10...Dust-containing fluid distribution pipe, 11...Dust removal downstream flow outlet, 12...Dust-containing filtration material outlet,
13...Filtering material, 14...Baffle plate support a structure, 15...Filtering material supply tank, 16...
... Screw feeder, 17 ... Filter material collecting pipe, 18 ... Perforated plate-like filter material support structure, 5
1... Dust collector body, 52... Dust-containing gas inlet, 53... Clean gas outlet, 54...
・Support, 55... Granular filter material, 56...
・・Collection 11 Jil, 57・---・Global filter material supply hopper, 58・・・・Outer cylinder, 59・・・・
・Cyclone, 60... Inner cylinder, 61...
・Exhaust gas inlet, 62...Dust removal valve, 6
3... Partition plate, 64... Catalyst layer, 65
...Reducing agent addition means, 66 ... Dust removal section, 67 ... Denitration section, 68 ... Clean gas outlet, 69 ... Catalyst Carrying means, 70...
- Packed tower, 71... Filler, 72... Gas introduction pipe, 73... Gas tower internal outlet, 74...
... Tank, 75 ... Clean gas outlet conduit, 7
6... Filling discharge port, 77... Filling discharge control damper, 78... Discharge storage tank,
79.80...Damper, 81...Dry smoke machine, 82...Sieving machine, 83...Gas generation source, 84... Exhaust fan, 85...Diffusion tower, 86...Gas dispersion nozzle, 87...
・Discharge machine. Agent Patent Attorney Takashi Honma Figure 2 Figure 4 Kyodai 5 @ Figure 6 Figure 7 Figure 8 Kokudai q Figure ↓ %/θ Figure ↓ Figure 7/Figure % I2 Figure 13 @ Gin/4 Figure 17 figure

Claims (1)

[Claims] 1. An upper space and a lower space are formed in the container, a filtration material support structure is constructed horizontally in the middle part sandwiched between the two spaces, and a filtration material is placed thereon to form a filtration layer. A means for introducing a filter material into the upper space and a discharge port for the fluid after dust removal are provided, and a means for cutting out the filter material is provided at the bottom of the filtration layer and is movable to carry the filter material and has an opening. 1. A dust-containing fluid filtration device comprising: a means for discharging a filter material out of a container in a lower space; and a means for feeding a dust-containing fluid into the container. 2. A plate-like object that can move horizontally while supporting a filter medium, and a position where the filter medium cutting means prevents the filter medium carried by the plate-like object from moving as the plate-like object moves. 2. The filtration device for dust-containing fluid according to claim 1, comprising an obstacle housed in the filter. 3. The dust-containing fluid filtration device according to claim 1, wherein the dust-containing fluid is introduced into a space below the filtration layer in the container. 4. Claim 1, wherein the support structure for the filter medium is made of a perforated plate-like material or a net-like material having apertures no larger than the filter material.
A filtration device for a dust-containing fluid as described above. 5. The dust-containing fluid filtration device according to claim 1, wherein the support structure for the filter medium comprises a louver-like structure. 6. An upper space and a lower space are formed in the container, a filtration material support structure is constructed horizontally in the middle part sandwiched between both spaces, a filtration material is placed thereon to form a filtration layer, and the filtration material is placed in the upper space. A means for introducing the filter material and a discharge port for the fluid after dust removal are provided, a means for cutting out the filter material is provided at the bottom of the filtration layer, the means is movable and has an opening for supporting the filtration material, and the filtration material is disposed in the lower space. A means for discharging the dust-containing fluid to the outside of the container is provided, and a means for supplying the dust-containing fluid into the container is provided, and the amount of filtering material input is adjusted in response to changes in the flow rate of the dust-containing fluid being sent and changes in the dust-containing concentration. and a method for filtering a dust-containing fluid, characterized in that dust is removed by changing the operating method of cutting out the filter material.