JP2001276535A - Solid-gas separating filter and solid-gas separating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein in a gab filter prepared by forming a filter fabric into a bag-like shape, it is difficult to regenerate it when clogging is generated and the bag filter has to be replaced with a new one when it is partly damaged. SOLUTION: A cylindrical body 20 is formed by cylindrically gathering cordlike filter raw materials 21 and fixing both ends on a top supporting body 20 and a bottom face supporting body 40. A guide frame 50 is inserted through the inside and is fixed with the bottom face supporting body 40. When the guide frame 50 is elevated and lowered, the cord-like filter raw materials 21 are bent to improve sweeping-off properties for dust and to exhibit excellent cleaning properties.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid-gas separation filter for collecting solid particles contained in an air flow, and a solid-gas separation device provided with the solid-gas separation filter.

[0002]

2. Description of the Related Art A bag filter has been conventionally known as such a solid-gas separation filter. FIG. 11 shows an example of a bag filter. The bag filter 1 is configured by forming a filter cloth into a bag shape, and has an opening 2 on one end side.
As the shape of the bag filter 1, there are an envelope shape and the like in addition to the cylindrical shape as shown in FIG. 11, and each of them is formed in a hollow bag shape. For the filter cloth, cotton, nylon, Tetron (registered trademark), glass fiber, or the like is used, and for the weave of the filter cloth, both woven cloth and non-woven cloth (such as felt) are used.

FIG. 12 shows a solid-gas separation apparatus provided with such a bag filter. In this solid-gas separation device, a bag filter 1 is disposed in a flow path of a dust-containing gas in a dust chamber 3, and a mechanism for filtering and collecting dust in the dust-containing gas in the bag filter 1. .

[0004] Further, the collected dust adheres and accumulates on the surface of the filter cloth, and the amount of the accumulated dust increases as the filtration proceeds, and the filtration resistance (pressure loss) of the bag filter increases. It is necessary to perform an operation of appropriately removing the money.
As a method of removing the dust layer adhered and deposited on the bag filter 1, a pulse air method in which high-pressure air is blown from the nozzle 4 provided on the upper part of the dust chamber 3 to the bag filter 1, as shown in FIG. A vibration generator 6 is attached to the support member 5 on which the bag filter 1 is suspended.
In many cases, a vibration method in which a mechanical vibration is applied by a method, a reverse airflow method in which a clean airflow passes in a direction opposite to a filtration direction, and the like are employed.

[0005]

As described above, in a solid-gas separation apparatus for collecting dust and the like using a solid-gas separation filter, it is necessary to periodically wash off a dust layer deposited and deposited on the filter cloth surface. . However, dust particles gradually enter the inside of the fiber layer of the filter cloth due to long-term operation, and it becomes difficult to remove the dust particles even by removing the dust particles, and the filtration resistance may significantly increase.

[0006] Further, in the case where dust having high adhesion or dust having a small particle diameter is collected, dust is not sufficiently removed from the filter cloth and clogging occurs even if the above-mentioned wiping treatment is performed. It became difficult to regenerate the filter cloth which was easily clogged at one end. In addition, if the mechanical vibration applied to the filter cloth is increased or the operating pressure of reverse airflow, pulse jet, etc. is increased to remove such highly adherent dust, the filter cloth may be damaged such as perforated. When a part of the filter cloth is damaged, repair of the damaged part is indispensable, and in many cases, the filter cloth must be replaced with a new bag filter.

Accordingly, the present invention has been made to solve these problems, and an object of the present invention is to provide a solid-gas separation filter having excellent dust-off properties and a solid-gas separation filter provided with the solid-gas separation filter. It is to provide a device.

[0008]

A solid-gas separation filter according to a first aspect of the present invention is a solid-gas separation filter for collecting solid particles contained in an air flow, wherein a cord-like filter material is collected in a cylindrical shape. A cylindrical member, a bottom member for connecting an end of each filter material located at one end in the length direction of the cylindrical member in a ring shape, and closing an open end of the cylindrical member; And an annular frame member for annularly connecting the ends of the respective filter materials located at the other end of the filter material.

[0009] By thus collecting the cord-like filter materials into a tubular shape, the gap between the cord-like filter materials is in a state of exerting a filtering action, and the space between the inside and the outside of the tubular body is filled with dust or the like. When the air flow containing the solid particles flows, the solid particles are collected in the gap between the filter materials constituting the cylindrical body, and thus function as a solid-gas separation filter.

[0010] The filter material is not necessarily limited to a single filter material, but also includes a single filter material formed by twisting a plurality of small-diameter filter materials.

According to a second aspect of the present invention, in the solid-gas separation filter according to the first aspect, the bottom member and the annular frame member can be displaced relative to each other along the longitudinal direction of the cylindrical body. It is characterized by the following.

Both ends of the cord-like filter material constituting the tubular body are fixed by a bottom member and an annular frame member, respectively. When the bottom member and the annular frame member relatively approach each other, a tensioned state is obtained. The filter material flexes and loosens,
The filter materials can be separated from each other, and the solid particles attached to the filter materials are easily wiped off.
In addition, by repeatedly approaching and separating the bottom member and the annular frame member, each filter material repeats a tensioned state and a relaxed state. At this time, the filter material operates to be shaken off, and the filter materials are rubbed. As a result, the solid particles adhering to the filter material can be effectively removed.

According to a third aspect of the present invention, in addition to the configuration of the solid-gas separation filter according to the second aspect, the solid-gas separation filter is provided along the longitudinal direction of the cylindrical body, and has a bottom surface member, the annular frame member, And a guide member for guiding the relative displacement of.

By providing such a guide member, even when the relative approach / separation operation between the bottom surface member and the annular frame member is performed, the contact / separation operation is stably performed while being guided by the guide member. Can be done.

According to a fourth aspect of the present invention, in the solid-gas separation filter according to the third aspect, one of the bottom member and the annular frame member is fixed to the guide member.

For example, when the guide member is reciprocated along the length of the tubular body, one of the bottom surface member or the annular frame member fixed to the guide member reciprocates integrally with the guide member. Become. Therefore, by reciprocating the guide member, the relative approach / separation operation between the bottom surface member and the annular frame member can be performed.

According to a fifth aspect of the present invention, there is provided a solid-gas separation device, comprising: a housing having an inlet and an outlet for an air flow; and a solid particle included in the flow path of the air flow passing through the housing. And a solid-gas separation filter for collecting the solid-gas separation filter, wherein the solid-gas separation filter is the solid-gas separation filter according to any one of claims 1, 2, 3, and 4. I do.

By using a solid-gas separation filter constituted by a tubular body or the like in which the above-mentioned cord-like filter materials are assembled as a solid-gas separation filter in a solid-gas separation device, the filter adheres to the solid-gas separation filter. Excellent in removing solid particles that have been removed, it is possible to suppress an increase in pressure loss,
Dust can be efficiently removed. In addition, since the use period until the regeneration of the solid-gas separation filter becomes necessary can be lengthened, the operation rate of the solid-gas separation device can be improved.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the accompanying drawings.

FIG. 1 shows a solid-gas separation device 1 according to the embodiment.
00 is shown. Dust chamber 1 of solid-gas separation device 100
Inside 10 is a dust collection chamber 110A into which dust-containing air is introduced,
Collecting room 110 where clean air after dust is collected
B is partitioned by a partition plate 120, and one end of the solid-gas separation filter 10 is attached to an opening formed in the partition plate 120. Accordingly, the main body portion including the other end of the solid-gas separation filter 10 projects from the partition plate 120 toward the dust collection chamber 110A. The dust-containing air introduced into the dust collecting chamber 110A from the inlet 131 flows from the outer peripheral part to the inner peripheral part of the solid-gas separation filter 10 and then flows out to the collecting chamber 110B side. When passing through 10, solid particles such as dust are collected. Then, the clean air flowing out to the collecting room 110B side is sent out of the dust chamber 110 via the outlet 132.

FIGS. 2A and 2B show a solid-gas separation filter 1.
0 is extracted and shown. The solid-gas separation filter 10 is configured by assembling a long cord-like filter material 21 and arranging a guide frame 50 in a tubular body 20 bound into a hollow bundle-like cylindrical shape.

On the upper end side of the cylindrical body 20, the ends of the cord-like filter materials 21 are bound and fixed in a cylindrical shape by an annular upper support 30, and the lower end side of the cylindrical body 20 is similarly fixed. To
The ends of the cord-like filter materials 20 are bound and fixed in a tubular shape by the bottom support 40.

Each cord-like filter material 21 is made of a natural fiber such as cotton, a synthetic fiber such as nylon, Tetron or Teflon (registered trademark), or an inorganic fiber such as glass or stainless steel. Is formed in the shape of a rope rope, the diameter of which is about 0.1 mm to 20 mm,
It is preferably about 0.2 mm to 5 mm, and is appropriately selected depending on the size and properties of the solid particles to be collected. It should be noted that the cord-like filter material 21 is not limited to a material formed by twisting the fiber materials for the filter as described above. Instead, a single cord-like filter material 21 may be formed.

As shown in FIG. 3, the upper support 30 comprises an annular ring 31 and two semicircular frame members 32. When the cord-like filter material 21 is bound in a cylindrical shape, the inner peripheral side of the cord-like filter material 21 bundled in a tubular shape is supported by the ring body 31, and the outer peripheral side of the cord-like filter material 21 bundled in a tubular shape Between the two
After the two frame members 32 are put together, the frame members 32 are fastened to each other by a fastening member including a bolt and a nut (not shown). Thereby, the two frame members 32 and the ring body 3
1, the one end side of the tubular body 20 is fixed in a ring shape.

On the other hand, as shown in FIG. 4, the bottom support member 40 includes a bottom member 43 in which a circular flange plate 42 for closing an opening of the annular ring member 41 is integrally fixed. It is constituted by two arc-shaped frame members 44, and the method of fixing the lower end portion of the cylindrical body 20 in a ring shape is the same as that of the upper support body 30. The end is closed.

As shown in FIG. 5, the guide frame 50 has a plurality of circular frames 51 arranged at equal intervals on the center axis thereof, and surrounds the arranged circular frames 51.
Four pillars 52 extending along the arrangement direction are arranged at equal intervals, and the intersection of each pillar 52 and each circular frame 51 is fixed to form a cylindrical frame as a whole. In addition,
In FIG. 5 and the like, a configuration including four pillars 52 is illustrated, but it is sufficient that the relative displacement of the upper support 30 or the bottom support 40 can be guided, and the arrangement position and the number of the pillars 52 are not particularly limited. .

The guide frame 50 is disposed in a state of being inserted into the cylindrical body 20 through the opening of the upper support 30. The distal end of each of the columns 52 serving as the insertion ends is described above. It is fixed to the bottom support 40. Therefore, the upper support 30 and the bottom support 40 and the guide frame 50 have a structure that can be relatively displaced along the length direction of the support 50. In the solid-gas separation device 100 shown in FIG. 1, the upper support 30 is fixed to the partition plate 120.

When the solid-gas separation filter 10 is provided with the cylindrical body 20 in this manner, dust-containing air containing solid particles such as dust flows between the inner peripheral side and the outer peripheral side of the cylindrical body 20. When circulating, in the gap between the cord-like filter material 21,
Solid particles such as dust are collected, and function as a filter for collecting solid particles contained in the airflow.

The size of the solid-gas separation filter 10 is, for example, a diameter of 1 when it is bound in a cylindrical shape in the case of a type used for an industrial solid-gas separation device.
It is often used in a range of about 00 mm to 300 mm and a length of about 2 m to 12 m.

The tension acting on the cord-like filter material 21 can be adjusted by applying a force in a direction in which the upper support 30 and the bottom-face support 40 relatively approach and separate from each other. The collection performance of the solid-gas separation filter 10 can be adjusted by appropriately setting the aggregation density of the filter 11.

On the other hand, in order to remove dust adhering to the solid-gas separation filter 10, the solid-gas separation device 100 of FIG. 1 is provided with an air nozzle 140 above the position where the solid-gas separation filter 10 is provided. High-pressure air is instantaneously blown from the air nozzle 140 to each solid-gas separation filter 10 to remove dust adhering between the cord-like filter materials 21. At this time, the removed dust easily falls down along the surface of the cord-like filter material 21 and through the gap S (see FIG. 5) formed between the cord-like filter materials 21. Therefore, it is excellent in the wiping property as compared with a bag filter using a conventional filter cloth.

In addition to the pulse air type, a mechanical vibration type in which the solid-gas separation filter 10 is mechanically vibrated to remove the adhered dust, and a clean air stream flows in a direction opposite to the filtration direction. In addition to the reverse airflow method for removing attached dust, a conventional removal method such as a reverse jet method can be applied as it is.

Further, the adhered dust can be removed by repeatedly raising and lowering the guide frame 50 provided in the solid-gas separation filter 10 up and down. In this case, although not shown in FIG. 1, the vicinity of the upper end of the guide frame 50 is connected to a wire 150 (see FIGS. 7A and 7B) extending from the hoisting device for raising and lowering. When the dust is removed, the winding and feeding of the wire 150 are repeated by the winding device. Wire 15
7A and 7B, the guide frame 50 and the bottom support 40 fixed to the guide frame 50 move upward relative to the upper support 30 as shown in FIGS. 7A and 7B. Since the bottom support member 40 and the upper support member 30 are relatively close to each other, the cord-shaped filter material 21 therebetween is bent. Then, when the wire 150 is sent out, the bottom support 40 descends together with the guide frame 50, the bottom support 40 and the upper support 30 are relatively separated from each other, and the cord-like filter material 21 therebetween is in a tension state again. . By such a raising and lowering operation of the guide frame 50, the cord-shaped filter material 2
1 repeats a tensioned state and a relaxed state, and at this time, the wire-shaped filter material 21 operates so as to be shaken off, or the wire-shaped filter material 21 rubs against each other,
Solid particles such as dust attached to the cord filter material 21 can be effectively removed. Further, at this time, by simultaneously performing a process of instantaneously blowing high-pressure air from the air nozzle 140 to each of the solid-gas separation filters 10, dust can be removed more efficiently.

The guide frame 50 is connected by the wire 150.
Although the case where the bottom support 40 is moved up and down is illustrated, the upper support 30 may be moved up and down by the wire 150.

On the other hand, if dust particles enter the center of the solid-gas separation filter 10 and the filtration resistance is not sufficiently improved even by such a removal method, the solid-gas separation filter 10 is solidified. It is also possible to remove it from the gas separation device 100 and regenerate it.

FIG. 8 shows a system for cleaning the solid-gas separation filter 10. First, the solid-gas separation filter 10 is detached from the solid-gas separation device 100, the fixing of the guide frame 50 and the bottom support 40 is released, and the guide frame 50 is detached from the solid-gas separation filter 10. In this state, the washing water tank 300
Wash within. In the washing water tank 300, the individual cord-shaped filter materials 11 are in a relaxed state, and the washing water can be sufficiently circulated to the individual cord-shaped filter materials 21. Dust that has been removed can be efficiently removed. After being washed, the cord-shaped filter material 21 can be regenerated as a solid-gas separation filter 10 after being dried, and attached to the solid-gas separation device 100 with the guide frame 50 attached again.

The washing water used for washing is treated by the drainage treatment equipment 310, and the treated water is washed in the washing water tank 30.
0, and can be used again as washing water.

For example, when the damaged wire filter material 21 is found during this cleaning operation, only the damaged wire filter material 21 is replaced with a new wire filter material 2.
1, the maintenance cost can be reduced, and the damaged cord-like filter material 21 can be discarded after washing, so that the environment can be sufficiently considered.

Here, as a comparative example of the conventional bag filter and the solid-gas separation filter of the present embodiment, FIG. 9 shows a pressure loss, and FIG. 10 shows a case where dust is removed by a pulse jet method. Shows the payoff efficiency. In each of the comparative examples, the dust to be collected was carbon particles, and the conventional bag filter used was a nonwoven fabric of nylon as a filter cloth material.

In the comparative example of the pressure loss shown in FIG. 9, dust was removed from each filter by a pulse jet method every 8 hours, and the filter was washed with water every 150 hours.

From the comparison results shown in FIG. 9, the solid-gas separation filter 10 of the present embodiment generally has a lower pressure loss than the conventional bag filter, and the pressure loss increases due to regeneration treatment by washing. It was confirmed that it could be kept lower. Further, from the comparison result of FIG. 10, it was confirmed that the dust removal efficiency of the solid-gas separation filter 10 of the present embodiment is improved as compared with the conventional bag filter.

In the embodiment described above, the case of external filtration in which dust-containing air is circulated from the outer peripheral side to the inner peripheral side of the solid-gas separation filter 10 is exemplified. The solid-gas separation filter 10 can also be used in the case of internal filtration in which dust-containing air flows toward the outer peripheral side.

Although the configuration in which the guide frame 50 is concentrically arranged on the inner peripheral side of the cylindrical body 20 is illustrated, a configuration in which the guide frame 50 is concentrically arranged on the outer peripheral side of the cylindrical body 20 may be adopted. In particular, in the case of the inner surface filtration method, the flow of the dust-containing air is not hindered and the shape of the cylindrical body 20 can be maintained, so that the guide frame 50 is arranged on the outer peripheral side of the cylindrical body 20. desirable.

Further, the structure of the guide frame 50 is exemplified by a case where the guide frame 50 is formed in a cylindrical shape by the plurality of circular frames 51 and the four columns 52. However, the present invention is not limited to this structure. Alternatively, a triangular frame, a rectangular frame, or the like, or a plurality of circular frames 51 may be used in place of a spiral cylindrical frame, for example, may be connected and supported. The body 40 may be supported on the dust chamber 110 side, and the upper support 30 may be moved up and down by a wire. Thus, the bottom support 4
It is sufficient that at least one of the zero support member and the upper support member 30 can be raised and lowered, and the lifting mechanism is not particularly limited.

In the embodiment described above, the case where the lower end opening of the cylindrical body 20 is closed by the bottom support body 40 is exemplified. However, for example, the lower end of the cylindrical body 20 may be annularly positioned at the lower end. The tubular body 20 is deformed into a bag shape by binding the ends of the cord-shaped filter material 21 to be bound into one using a predetermined binding member. In this manner, the lower end of the cord-shaped filter material 21 is bound. By doing so, it is also possible to adopt a configuration in which the lower end opening of the tubular body 20 is closed.

The solid-gas separation filter 10 also collects useful powder from gas, in addition to a dust collector that collects dust contained in flue gas and the like in a boiler, sintering furnace, refuse incinerator, or the like. It can also be used in fields. In addition to such industrial use, it can be used as a dust filter in a home / vehicle air purifier, etc.
There is no particular limitation as long as it is used as a filter for collecting and collecting solid particles in an airflow.

[0047]

As described above, the solid-gas separation filter according to any one of claims 1 to 4 has a tubular body formed by collecting a cord-like filter material into a tubular shape. Since solid particles such as dust are collected in gaps between the cord-like filter materials, the filter material can function as a solid-gas separation filter.

As described above, since the solid-gas separation filter is constituted by the cord-like filter material, the dust-off property is superior to that of the conventional solid-gas separation filter in which the filter cloth is formed in a bag shape. In addition, an increase in filtration resistance due to long-term use can be suppressed. It also has a high effect of removing adhering dust by washing, and it is possible to replace only a part of the damaged filter material, so it is excellent in reproducibility and can be used repeatedly for a long time. Demonstrate.

According to a fifth aspect of the present invention, there is provided a solid-gas separation filter for collecting solid particles contained in an air stream. It was decided to consist of. Thereby, since the solid particles adhering to the solid-gas separation filter are excellent in removing property, the rise in pressure loss can be suppressed and dust can be efficiently removed. In addition, since the use period until the regeneration of the solid-gas separation filter becomes necessary can be lengthened, the operation rate of the solid-gas separation device can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram schematically showing a solid-gas separation device provided with a solid-gas separation filter according to an embodiment.

2A is a side view of a solid-gas separation filter, and FIG. 2B is a longitudinal sectional view of the solid-gas separation filter.

FIG. 3 is an exploded perspective view showing a top support.

FIG. 4 is an exploded perspective view showing a bottom support.

FIG. 5 is a perspective view showing a part of a guide frame.

FIG. 6 is a view showing a set state of a cord-like filter material;
It is sectional drawing of the perpendicular direction with respect to the length direction of a cord filter material.

7A is a side view of a solid-gas separation filter, and FIG. 7B is a longitudinal sectional view of the solid-gas separation filter.

FIG. 8 is a block diagram schematically showing a cleaning system for a solid-gas separation filter.

FIG. 9 is a graph showing the transition of the pressure loss of the solid-gas separation filter with respect to the operation time of the solid-gas separation device, comparing the conventional bag filter with the solid-gas separation filter of the present embodiment.

FIG. 10 is a graph showing the relationship between the pulse jet pressure and the removal efficiency by comparing a conventional bag filter with the solid-gas separation filter of the present embodiment.

FIG. 11 is a perspective view showing a conventional bag filter.

FIG. 12 is a configuration diagram schematically showing a conventional solid-gas separation device.

FIG. 13 is a configuration diagram schematically showing a conventional solid-gas separation device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bag filter, 10 ... Solid-gas separation filter, 20 ... Tubular body 21 ... Cord filter material, 30 ... Upper support (annular frame member) 40 ... Bottom support (bottom member), 50 ... Guide frame (guide) 100) solid-gas separator, 110: dust chamber, 1
10A: dust collecting chamber, 110B: collecting chamber, 120: partition board,
140 ... air nozzle 300 ... washing water tank, 310 ... drainage treatment equipment

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Mitsuhiro Mieno 63-30 Yuyogaoka, Hiratsuka, Kanagawa Prefecture Sumitomo Heavy Industries Machinery Co., Ltd. Hiratsuka Works F-term (reference) 4D058 JA02 JB22 KA01 KA08 MA02 MA12 MA15

Claims (5)

[Claims] 1. A solid-gas separation filter for collecting solid particles contained in an airflow, comprising: a tubular body formed by collecting a cord-like filter material into a tubular shape; and a length in the tubular body. Along with fixing the end portions of the respective filter materials located at one end in the direction in a ring shape, a bottom member for closing the open end of the tubular body, and the respective filter materials located at the other end of the tubular body A solid-gas separation filter comprising: an annular frame member that fixes an end portion in an annular shape. 2. The solid-gas separation filter according to claim 1, wherein the bottom member and the annular frame member are relatively displaceable along a length direction of the tubular body. 3. The solid-gas separation filter according to claim 2, further comprising a guide member provided along a length direction of the tubular body and guiding relative displacement between the bottom surface member and the annular frame member. 4. The method according to claim 2, wherein the bottom member and the annular frame member are provided.
The solid-gas separation filter according to claim 3, wherein one of the filters is fixed to the guide member. 5. A housing having an airflow inlet and an airflow outlet, and a solid-gas separator disposed in a flow path of the airflow passing through the housing and collecting solid particles contained in the airflow. A solid-gas separation device provided with a filter, wherein the solid-gas separation filter is the solid-gas separation filter according to any one of claims 1, 2, 3, and 4.