JPH09294930A - Base material for washing gas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base material for washing gas to wash gas efficiently. SOLUTION: A base material J (2, 3) for washing gas which is constituted by using a column-shaped or plate-shaped fiber aggregate or a fiber aggregate made by arranging at least two fiber aggregate pieces in a column shape or a plate shape and used by making washing liquid flows down from one side toward the other side has notched grooves which are opened at the lower end corresponding to the other side and the intervals of which are expanded toward the lower end. The other side can be in an outside shape in which projections of a pyramidal shape etc., the cross section of which is narrowed toward the lower end are arranged. Microorganisms can be carried on each fiber constituting the fiber aggregate or contained in the washing liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cleaning substrate, and more particularly to a technology for cleaning various gases, and a technology for manufacturing and selling various gas cleaning devices or their components.

[0002]

2. Description of the Related Art Conventionally, odorous components such as hydrogen sulfide, methyl sulfide, and methyl disulfide contained in sewage and wastewater can be decomposed by using microorganisms in sewage treatment plants, wastewater treatment facilities of factories, etc. Done. As a deodorizing device used for this treatment, there is known a deodorizing device provided with a packed tower having a predetermined gas cleaning base material filled therein. A type in which microorganisms that decompose odorous components to be treated are previously supported on this cleaning substrate (hereinafter referred to as "supporting type").
And a type in which the microorganisms are sequentially supplied from the outside (hereinafter, referred to as “supply type”). And, this deodorizing device is a gas (hereinafter,
It is called "process gas". ) Is classified into a gas-liquid countercurrent method and a gas-liquid parallel countercurrent method.

Among them, in the gas-liquid countercurrent system, a processing gas is introduced from below the packed column and a gas cleaning substrate is aerated to decompose and remove odorous components and the like from the gas. Then, the gas from which odorous components and the like have been removed (hereinafter referred to as “clean gas”) is discharged from the upper side of the packed tower to the outside of the packed tower. Further, a cleaning liquid such as water is introduced from above the packed tower, flows down the gas cleaning substrate, and is discharged to the outside of the packed tower. The cleaning liquid is used to wash away the processing waste (waste caused by the removed odorous components) adhering to the gas cleaning base material, and to replenish the gas cleaning base material with water.

[0004]

However, in the processing apparatus of this type, when the amount of the processing gas or the cleaning liquid introduced into the packed tower increases, the liquid cannot be completely flowed down in the packed tower and the gas cleaning Often stays below the substrate. For example, as shown in FIG. 4 (see Comparative Tests 1 to 4), when the water content of the gas cleaning base material becomes high or the linear velocity of the processing gas charged into the packed tower becomes large (the input amount increases). ), The pressure difference (pressure loss) between the upper and lower ends of the gas cleaning substrate becomes large. As a result, it becomes difficult for this liquid to flow down the gas cleaning base material, and it gradually accumulates in the packed tower, finally,
It often leaks out from the upper end of the packed column and causes a phenomenon called so-called "flatting".

On the other hand, in order to prevent the "flatting" phenomenon, it is possible to adjust the amounts of the processing gas and the cleaning liquid introduced into the packed tower. However, a decrease in the amount of processing gas input leads to a decrease in processing efficiency. Also, when the amount of the cleaning liquid input is less than the required amount, the processing waste is retained in the gas cleaning substrate for a long time, the processing waste causes the gas cleaning substrate to be clogged, and the microbial A problem such as a decrease in activity occurs, which eventually results in a decrease in processing efficiency. Therefore, the advent of a gas cleaning base material that does not easily cause the above-mentioned "flatting" or the like is desired.

The present invention has been made in view of the above points, and an object thereof is to provide a gas cleaning base material for efficiently performing gas cleaning.

[0007]

The gas cleaning substrate according to the first aspect of the present invention is configured by using a fiber aggregate having a substantially columnar shape or a substantially plate shape, or has two or more fiber aggregate pieces. A gas cleaning base material that is configured by using a fiber assembly that is arranged in a pillar shape or a substantially plate shape and is used by flowing down a predetermined cleaning liquid from one side to the other side, and the gas cleaning base material on the other side. It is characterized in that it is provided with a notch groove which is opened at a corresponding lower end and whose groove interval becomes wider toward the lower end.

For example, when a fiber assembly having a substantially columnar shape is erected vertically and a liquid such as water is introduced from the upper end located on "one side", the liquid receives the action of surface tension, etc.
There is a tendency to stay in the lower part located on the "other side" of the fiber assembly. This tendency becomes greater as the amount of liquid input increases. Therefore, even in the conventional gas cleaning substrate, if the amount of the cleaning liquid supplied from the upper portion becomes large,
In the lower part of the gas cleaning base material, the cleaning liquid (used amount or surplus amount) is retained and "flatting" is likely to occur. This tendency becomes stronger as the water content of the gas cleaning base material becomes higher and the amount of the processing gas introduced from the lower portion of the gas cleaning base material increases. On the other hand, even in the fibrous structure in which the liquid is retained in the lower portion in this way, when the fiber assembly is slightly inclined, the retained liquid smoothly flows out from the lower portion.

The present invention has been made paying attention to such a phenomenon. That is, by providing the cutout groove as described above in the lower portion, it is possible to smoothly discharge the cleaning liquid without tilting the gas cleaning base material. This action will be described more specifically with reference to FIG. As shown in FIG. 5, when the lower portion 22 has a substantially frustum shape, the supplied cleaning liquid is
It becomes easier for the gas to flow toward the upper bottom surface 22a of the frustum, that is, the bottom surface 22a of the gas cleaning base material 2, and the injected processing gas enters the gas cleaning base material 2 from the side surface 22b of the lower portion 22. It will be easier.

This is presumed to be because the cleaning liquid that has flowed down the gas cleaning substrate 2 and has arrived just before the lower portion 22 has a higher tendency toward the bottom surface 22a of the lower portion 22 due to the influence of surface tension and the like. To be done. It is also presumed that this is because the cleaning gas is less likely to flow out from the side surface 22b because the processing gas is evenly contacted with the side surface 22b of the lower portion 22. Furthermore, if the tendency of the cleaning liquid to face the bottom surface 22a of the gas cleaning base material 2 increases, the moist air on the side surface 22b decreases, so that the processing gas enters the inside of the gas cleaning base material 2 from the side surface 22b. It is presumed that the cause is that it is easy to do. Then, the cleaning liquid collects in the lower portion 22 located on the "other side", and the collected liquid collects the gas cleaning base material 2
Will run down along.

The "gas cleaning substrate" of the present invention is not limited to the above deodorizing device and can be used for various gas cleaning devices for cleaning a predetermined gas with a liquid such as water. The "gas cleaning substrate" may be the "supporting type" shown in the fifth invention or the "replenishing type" whose one embodiment is exemplified in the sixth invention. That is, in the fifth aspect of the present invention, a predetermined microorganism is carried on each constituent fiber that constitutes the above-mentioned fiber assembly. Further, in the sixth invention, a predetermined microorganism is mixed in the cleaning liquid (the replenishing type is not limited to the sixth invention.

The above "one side" and "other side" are selected according to the usage of the gas cleaning substrate. For example, when the axis line along the longitudinal direction of the elongated base material is used in the vertical direction, one side and the other side are selected along this axis line. When this axis is used horizontally, one side and the other side are selected along the direction orthogonal to this axis. Further, when the gas cleaning substrate of each of the present invention is arranged in a predetermined packed tower, above the substrate,
One or more other gas cleaning base materials (hereinafter referred to as "auxiliary base materials") may be arranged. This auxiliary base material may be the same as that of the first invention or the like, or may be a conventional type base material having no notch groove on the other side.

In the second aspect of the present invention, the other side has an outer shape in which pyramidal or pyramidal trapezoidal protrusions whose cross-sectional area becomes narrower toward the lower end are arranged. The present invention exemplifies a specific outer shape on the other side. This projection
Whether it is arranged in a dotted pattern at the lower end of the base material, or a long one divided by "notch grooves" that cross the lower end,
These may be mixed. In the third aspect of the present invention, two or more fiber assembly pieces each having a substantially plate shape and having one end surface side appropriately cut out to have a substantially sawtooth shape are arranged with the one end surface aligned in one direction. They are overlapped with each other and are formed into a substantially columnar shape or a substantially plate shape. In the present invention, the fiber assembly piece (gas cleaning base material piece) having a substantially plate shape is provided with the notch groove, and then the fiber assembly body piece (gas cleaning base material piece) is superposed. , Which constitutes one gas cleaning substrate. Therefore, the gas cleaning substrate can be efficiently manufactured.

In each of the above inventions, the "fibrous aggregate" is used for a small piece of plastic, a small piece of ceramic,
This is because it is easy to increase the surface area per unit volume as compared with the case where another base material such as a net is used. Note that the fiber assembly may be configured by using only fibers having a substantially uniform thickness, but if it is configured by two or more types of fibers having different thicknesses, this surface area can be reduced by the ratio of the thinner fibers. You can also control. That is, the larger the proportion of the finer fibers, the larger the surface area.

Further, it is preferable that the "gas cleaning substrate" has an appropriate water absorption property when used. However,
The water absorption of the "fiber assembly" or "fiber assembly piece" that constitutes the "gas cleaning base material" may be caused by the material of the constituent fibers (a) after (a) water retention treatment, etc. It may be given by processing. In particular,
In the case of (a), fibers that are rich in water absorption are included in the constituent fibers.
The case where only the necessary amount is included is shown, and the case (a) shows the case where the fiber having a high water absorbing property is not included in the necessary amount or only the fiber having a poor water absorbing property is used as the component fiber. . Further, in the case of (a), by immersing the "fiber aggregate" or "fiber aggregate piece" having poor water absorption in a water retention agent, or by spray-coating the "fiber aggregation" or the like with a water retention agent, Water absorption is provided. Then, as the "water-retaining agent", for example, one containing a water-soluble polymer (polyvinyl alcohol, polyacrylamide, polyacrylic acid, etc.) cross-linked with a predetermined cross-linking agent (formaldehyde, glyoxal, melamine resin) It can be illustrated.

The above-mentioned "(a) highly water-absorbent fibers" include not only fibers having a high water-absorption property such as fibers using polyvinyl alcohol resin, but also synthetic fibers having a low water-absorption property. It also includes those that have been subjected to water retention treatment. in this case,
As shown in the fourth aspect of the present invention, the fibrous structure or the fibrous structure piece according to the first to third aspects of the invention may be configured using water-retaining fibers. Examples of the “fibers having poor water absorption” in (a) above include “water-resistant synthetic fibers” using a polyvinyl chloride resin-based or vinylidene chloride-based copolymer. Further, the above "fiber aggregate" and the like may be prepared by using only these "water resistant synthetic fibers" alone, but a mixed fiber of these "water resistant synthetic fibers" and other fibers may be used. You may use. Examples of the "other fibers" include synthetic fibers having a water retention rate of 10% or less such as vinylon and nylon, synthetic fibers having a water retention rate of 1% or less such as polyester and vinyl chloride, and biodegradability of zeal and palm. There is no
Examples include extremely low natural fibers and the like.

Further, the bonding between the constituent fibers constituting the above "fiber assembly" or "fiber assembly piece" is performed, for example, by
It is performed using a binder or the like. And as this "binder", polyvinylidene chloride latex, S / B
Solvent-based binders such as latex, acrylic latex, PVC latex, urethane latex, CR latex and NR latex can be exemplified. Further, the "fiber assembly" or the "fiber assembly piece" can be produced by using a mixed fiber of the heat-welded fiber and the non-welded fiber.
In this case, heat is applied to the heat welded fiber in place,
Bonding between the constituent fibers is performed. The "heat-welded fiber" mainly has a heat-bonding (welding, welding) action, and when it is heated to a high temperature, the heat-welding fiber disappears and becomes a burl, and the action of bonding the constituent fibers together. Equipped with. However, when only the surface is melted without heating to a high temperature up to this point, the fiber itself does not disappear.

The "heat-welding fiber" is composed of any one or more of adhesive core-sheath fiber, low melting point polyester fiber, polyethylene fiber, polypropylene fiber, polyvinyl chloride fiber and nylon fiber. The thing can be illustrated. The adhesive core-sheath fiber is a fiber having a core made of high-melting point polyester fiber and a coating part covering the core and having a melting point lower than that of the high-melting point polyester fiber by 30 ° C. or more. Is. Since this fiber does not disappear by itself, the decrease in volume is small, and because the core fiber is a high melting point polyester, it has excellent thermal properties (heat resistance, etc.), mechanical properties, etc. Further, the fibers may be solid or hollow. The hollow body is lighter in weight and has excellent elasticity.

Further, the "non-heat-welding fiber" may have any melting point higher than that of the "heat-welding fiber",
Usually, one having a high melting point of 150 to 280 ° C. is used.
As the fibers, polyester fibers made of polyethylene terephthalate, polyhexamethylene terephthalate, polytetramethylene terephthalate, etc., other synthetic fibers, natural fibers and the like can be used.

[0020]

Embodiments of the present invention will be described below. A. Embodiment 1 (1) Outline of deodorizing device In this embodiment, the deodorizing device shown in FIGS. 1 and 2 was used. This device is a miniaturized deodorizing device used in a wastewater treatment plant. This deodorizing device comprises a pair of packed towers 1, ₁ , electromagnetic pulse pumps P ₁ , P ₂ connected to each packed tower 1, 1 and a manometer M ₁ connected for each packed tower 1, ₁ . M ₂ and each packed tower 1, 1
It includes a flow cell F _1, F _2, which are connected to each, and a compressor C connected to both the flow cell F _1, F _2, and a filler J disposed in each packed column 1,1. As shown in FIG. 2, the packed towers 1 and 1 each include a tower body 11, a container-shaped portion 12, and an upper lid 13.

Of these, the tower main body 11 is made of transparent plastic, and has a tubular body with a square ring-shaped cross section and open at both ends (outer shape: 156 m).
m × 156 mm × 700 mm). The upper and lower ends are provided with connecting collars T ₁ and T ₂ , and the upper side is connected to one end of the manometer M ₁ (or M ₂ ).
The sample tube S ₁ is connected. The tower body 11
A predetermined mesh-shaped partition member (not shown) is arranged at the bottom of the.

The container-shaped portion 12 has a substantially rectangular parallelepiped outer shape, and has a container shape with an open upper part. Also,
A brim T ₃ for connection is provided around the opening, and at the bottom,
A drain pipe S ₂ for drainage is connected. A gas introduction pipe S ₃ leading to the flow cell F ₁ (or F ₂ ) is connected to one side, and the other end of the manometer M ₁ (or M ₂ ) is connected to the other side. The second sample tube S ₄ is connected. And this container-shaped portion 12
And the tower main body 11 are fixed with screws by superposing corresponding connecting collars T ₃ , T ₂ . However, a square ring-shaped packing D ₁ is sandwiched between the connecting collars T ₃ and T ₂ . Therefore, the container-shaped portion 12 and the tower main body portion 11 are in a state of being communicated with each other while sandwiching the mesh of the partition member while being sufficiently sealed at the joint.

The upper lid portion 13 has a flat outer shape corresponding to the connecting collar T ₁ above the tower main body portion 11. Then, the square ring-shaped packing D ₂ is sandwiched, and the packing D ₂ is arranged on the connecting collar T ₁ and fixed by screws. Therefore, the joint between the upper lid 13 and the tower body 11 is also in a sufficiently sealed state. Also, the upper lid 1
A discharge pipe S ₅ for discharging clean gas to the outside of the packed towers 1, 1 and a water introduction pipe S ₆ leading to the electromagnetic pulse pump P ₁ (or P ₂ ) are connected to 3. . The electromagnetic pulse pump (spraying amount; 100 ml / m
in) P ₁ and P ₂ are for spraying water in the corresponding tower main body portions 11 and 11. The operation of the pumps P ₁ and P ₂ is controlled by using a predetermined timer (not shown).

With the manometers M ₁ and M ₂ , the pressure between the connected portion of the first sample tube S _{1 and} the connected portion of the second sample tube S ₄ inside the respective cylinder main bodies 11 and 11 is measured. Measure the difference. And, due to this pressure difference,
The pressure difference between the top and bottom of the filling material J, that is, the pressure loss (ΔP) is measured. The target processing gas is introduced into the container-shaped portion 12 through the gas introduction pipe S ₃ by the flow cells F ₁ and F ₂ . In addition, the compressor (200 liters / min, 250 mmAq) C uses the transmission pipe S ₇ whose front end is branched into two branches, and uses each of the flow cells F ₁ , F ₂
Send compressed air to. Then, each flow cell F ₁ , F
The amount of the compressed air reaching the ₂ is adjusted by using these valves B ₁ arranged in front, B _2.

The above-mentioned filler (outer shape: about 100 mm × about 10)
0 mm × about 500 mm) J is the one in which the first base material 2 and the second base material (auxiliary base material) 3 are arranged in series in the vertical direction as shown in FIG. The base materials 2 and 3 are all replenishment type. However, at least one of the base materials 2 and 3 may be a carrier type. The first base material (outer shape; about 100 mm × about 100 mm × about 250 mm) 2 is located on the other side of the main body portion 21 which is a substantially rectangular parallelepiped and has a vertical cross section of a substantially trapezoidal shape. The projections R are provided in parallel with each other in three rows, and the lower portion 22 has a shape. And this base material 2 is produced as follows.

First, a mixed fiber of 30 parts by weight of 120 d short fiber (made of vinylidene chloride) and 70 parts by weight of 600 d short fiber (made of vinylidene chloride) is prepared. Next, the mixed fiber is false twisted into a kink state to form a fiber bundle, which is heat set and then loosened, which is then subjected to a sheet forming machine to be arranged and entangled. Then, a predetermined binder (polyvinylidene chloride latex) is applied by spraying, and the constituent fibers are appropriately joined to each other to form a thin plate piece (outer shape;
(About 100 mm × about 10 mm × about 250 mm), that is, a fibrous piece is obtained. Next, this thin plate piece is immersed in a water retention agent (mainly composed of polyvinyl alcohol resin) to perform water retention treatment. In addition, the amount of the water retention agent adhered to the thin plate piece 10
It is 5 to 15 parts by weight with respect to 0 parts by weight.

Next, a saw blade-like cut is made at one end portion along the longitudinal direction of this thin plate piece to obtain a gas cleaning substrate piece h as shown in FIG. Further, a total of 10 pieces of such gas cleaning base material pieces h are prepared. Then, the ten base material pieces h are overlapped while aligning the above "one end portion" in one direction, and the gas cleaning base material 2 as shown in FIG.
Becomes The gas cleaning base material pieces h adjacent to each other may be in a free state or a fixed state. And, as shown in FIG. 2, the first base material 2 is
Filling is arranged on the lower side inside each of the tower main bodies 11, 11 with the lower portion 21 facing downward. The first base material 2 may be formed into a prismatic shape from the beginning, instead of being an assembly of the base material pieces h. However, it takes some time and effort to make a sawtooth-shaped cut in the bottom of the prismatic fiber assembly. On the other hand, in the present embodiment,
Since this work may be performed on the thin base material piece h, it can be easily performed.

Further, the second base material 3 is directly laminated on the water-retaining base material piece without making the above-mentioned "cut", and has a substantially rectangular parallelepiped shape (outer shape: about 10).
0 mm × about 100 mm × about 250 mm). However, as with the first base material 2, the second base material 3 has the protrusion R
May be provided. And this second base material 3
Are packed and arranged in the upper part of the inside of each tower body 11, 11 as shown in FIG. It should be noted that the main material J is composed of the two gas cleaning base materials 2 and 3 only when the first base material 2 has a surface area (about 2000 m ² / m ³ ) for gas-liquid contact.
And the porosity (70% or more) cannot be sufficiently secured. However, when such a surface area is not required, the arrangement of the second base material 3 can be omitted. Also,
If a sufficient surface area is secured only by the first base material 2 such as by increasing the longitudinal dimension of the first base material 2, the second base material 3 need not be arranged. Further, the second base material 3 can also be configured by pushing a large number of small pieces having a prismatic shape, a spherical shape, a conical shape, or the like above the inside of each packed tower 1, 1.

(2) Performance Test In order to evaluate the performance of the filler J (first base material 2) described above, the following practical tests and comparative tests were performed. Practical test 1 As shown in FIG. 2, the packing material J is set in each packed tower 1, 1 and the electromagnetic pulse pumps P ₁ , P ₂ are intermittently operated. This operation is performed such that after water is sprinkled for 40 seconds, water sprinkling is stopped for 30 minutes. The filling material J is "replenishment type"
Therefore, when actually performing deodorization, microorganisms that decompose odorous components and the like are mixed into the water that is sprinkled. Then, when the water retention rate of the filler J is about 100% (that is, where the same amount of water as the weight of the filler J is held), the compressor C is operated and the valves B ₁ and B ₂ are turned on. The flow rate (linear velocity) of each of the flow cells F ₁ and F ₂ was gradually increased by using this method. Linear velocity at this time (liter / min)
And the pressure loss ΔP (mmAq / 0.005 m ³ ) were investigated and shown in FIG. However, when actually deodorizing with this deodorizing device, the preferable value of the linear velocity is 30 to 5
It is about 0 liter / minute.

Comparative Tests 1 to 4 For comparison, a comparative product constituted by arranging two base materials similar to the second base material 3 in series was prepared. Then, this comparative product was set in each of the packed towers 1 and 1, the compressor C was operated without water sprinkling (while maintaining the water retention rate at 0%), and the valves B ₁ and B ₂ were used to Flow cell F ₁ , F
The air volume (linear velocity) of ₂ was gradually increased. The relationship between the linear velocity and the pressure loss ΔP at this time was investigated and is also shown in FIG. 4 (comparative test 1). Further, when water was sprinkled in the same manner as in Implementation Test 1 and the water retention rate was about 47% (that is, water having a weight of about 47% of the comparative product was retained) (Comparative Test 2), the water retention rate was about 89.6. % (That is, holding about 89.6% water by weight of the comparative product) (Comparative Test 3), and the water retention rate is about 9
The relationship between the linear velocity and the pressure loss ΔP was also examined in the case of 3.4% (that is, holding about 93.4% by weight of water of the comparative product) (Comparative Test 4). These results are also shown in FIG.

(3) Performance evaluation In the case of the comparative product, the water retention rate is about 47% (Comparative test 2),
That is, it is considered that the increase of the pressure loss ΔP due to the increase of the air flow rate (linear velocity) is within the allowable range when not much time has passed from the start of the test. However, when the water retention rate is around 90% (Comparative tests 3 and 4), that is, after a certain time (for example, about 5 to 10 hours) has passed from the start of the test, the pressure loss and the pressure loss are increased as the air volume (linear velocity) increases. Δ
P greatly increases. And in the case of the comparative test 3,
Flattening occurred at a linear velocity of about 75 liters / minute, and in Comparative Test 4, flattening occurred at a linear velocity of about 70 liters / minute.

On the other hand, in the execution test 1, the increase rate of the pressure loss ΔP with respect to the increase of the linear velocity is within the allowable range, even though the water retention rate of the filler J is a high value (100%). is there. Therefore, in the filler J of the present embodiment, even if the water retention rate is increased or the amount of the introduced process gas is increased, the increase in the pressure loss ΔP can be stopped at a low level and the flatting can be avoided. In this way, the first base material 2
The reason why the good results are obtained when the filler J having the above is used is presumed as follows. Below the filler J,
That is, if the lower portion 22 of the first base material 2 is formed by arranging the protrusions R as described above, the "filling material J" will have "water breakage".
At the same time, the "breathability" of the entire filler J is improved. More specifically, referring to FIG. 5, when the lower portion 22 has a substantially frustum shape, it is charged from the upper side of the filler J, and the first base material 2
The water reaching the upper side of the frustum easily flows toward the upper bottom surface 22a of the frustum, that is, the bottom surface 22a of the first base material 2, and the injected processing gas flows into the side surface 22b of the lower portion 22.
It becomes easy to enter into the gas cleaning base material 2.

This is the case where the first base material 2 flows down and the lower part 22
The water arriving immediately before is influenced by the surface tension and the like and has a higher tendency toward the bottom surface 22a of the lower portion 22, and at the same time,
It is presumed that the process gas is evenly in contact with the side surface 22b of the lower portion 22, so that it is difficult for water to flow out from the side surface 22b. In addition, the water is the gas cleaning base material 2
If the tendency toward the bottom surface 22a of the
This is because the wetness of the processing gas is reduced, which promotes the behavior of the processing gas trying to enter the inside of the gas cleaning substrate 2.

B. Embodiment 2 (1) Outline of deodorizing device In this embodiment, a filler made of a material different from that in Embodiment 1 was used. That is, this filling material is also configured by arranging two base materials in series as in the first embodiment. However, as a base material piece that constitutes these base materials, a felt-made plate-like body (outer shape: about 10
0 mm x about 100 mm x about 250 mm, density; 0.15
gf / m ³ porosity; about 80%) is used. When this plate-like body is used, it itself does not have to be subjected to the water retention treatment as shown in the first embodiment because it has sufficient water retention performance. Then, a saw blade-shaped cut is made at one end portion along the longitudinal direction of this plate-like body to manufacture a gas cleaning substrate piece similar to that shown in FIG. A plurality of such gas cleaning base material pieces are accumulated while aligning "one end" in one direction to produce a first base material (same size as in the first embodiment). Also, for this plate-shaped body, without making a cut,
The second base material (same size as in the first embodiment) is formed by stacking a plurality of sheets.
Is prepared. Then, by arranging both in series in the tower body 11, the packing material is completed.

(2) Method of performance test and performance evaluation This packing material is packed and arranged in each of the packed towers 1 and 1, and water sprinkling is performed in the same manner as in Embodiment 1, and the water retention rate is about 110% (that is, packing material). A water having a weight of about 1.1 times that of (1) was held), and the relationship between the linear velocity and the pressure loss ΔP was examined as in the first embodiment (implementation test 2). The result is shown in FIG. In addition, for comparison, using a filler in which two base materials similar to the second base material used in the practical test 2 are arranged in series, the practical test 1
Similarly, the relationship between the linear velocity and the pressure loss ΔP was examined (Comparative Test 5). This result is also shown in FIG. According to FIG. 6, the execution test 2 shows a better result than the comparison test 5. In addition, also in the practice test 2, the reason why the pressure loss ΔP is high is that the pressure loss ΔP tends to be originally large because the fiber density of the laminate (laminate piece) forming the filler is high. . Therefore, even when felt is selected as the material of each substrate, good results are shown.

The present invention is not limited to the above-mentioned specific embodiments, but may be modified in various other forms within the scope of the present invention depending on the purpose and application.
Other embodiments and modifications can be made. That is, the lower portion (2) of the first base material 2 (filler J) or the like shown in each embodiment is
The shape of the protrusion R formed in (1 etc.) is not limited to that shown in each of the above embodiments. For example, as shown in FIG. 7 (a), even if the vertical section has a shape like a "baseball home base", as shown in FIG. 7 (a), the vertical section has a triangle pointed downward. It may be shaped. In addition, several kinds of protrusions having different vertical cross-sectional shapes may be present in the lower portion (21, etc.) of one first base material 2 (filler J) and the like. In addition, in each of the above-described embodiments, the case where the filler J in the shape of a long column is stood up and used, but it may be used horizontally. Further, in each of the above embodiments, the pillar-shaped filler J is described, but the sheet-shaped filler J may be used. In this case, one of the front and back surfaces of the sheet-shaped filler J may be an upper part, and the protrusion R may be formed on the other surface of the front and back. It is also possible to form the protrusion R on the lower end surface.

Further, in each of the above-mentioned embodiments, the base material pieces h and the like having a rectangular shape in plan view and arranged in the vertical direction in the longitudinal direction are overlapped in the lateral direction. The base materials 2 and 3 having a pillar shape or the like may be formed by vertically arranging base material pieces each having a planar square shape or the like while being horizontally arranged. In addition, in each of the above-described embodiments, the base materials 2 and 3 having a square (rectangular) cross-sectional shape are used, but the cross-sectional shapes are not limited to this. For example, circle, ellipse, regular pentagon,
It can be a regular hexagon or the like. Further, the usage target of the first base material 2 and the like is not limited to the deodorizing device illustrated in each embodiment and other cleaning devices. For example, a filter material such as glass wool can be placed inside a filter used for washing water in a water tank for ornamental fish. Moreover, you may use a 1st base material etc. instead of these filter materials.

[0038]

As described above, when the gas cleaning substrate of each of the above inventions is used, even if the amount of the cleaning liquid or the processing gas added is slightly increased, the above problems such as "flatting" are less likely to occur. Therefore, cleaning of a desired gas and the like can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a deodorizing device used in Embodiments 1 and 2 of the invention.

FIG. 2 is a schematic vertical cross-sectional view for explaining each packed column and packing material according to the first embodiment of the invention.

FIG. 3 is a schematic partial perspective view of a first base material forming the filler according to the first embodiment of the invention.

FIG. 4 is a graph showing the results of each performance test conducted in the first embodiment of the invention.

FIG. 5 is a schematic explanatory view illustrating the action of the filler (first base material) shown in FIG.

FIG. 6 is a graph showing the results of the performance test conducted in the second embodiment of the invention.

7A is a partial vertical cross-sectional view for explaining a modified example of the filler (first base material) of each embodiment, and FIG. 7B is a filler (first base) of each embodiment. It is a partial longitudinal cross-sectional view for explaining a modified example of the material.

[Explanation of symbols]

1; packed tower, 11; tower main body part, 12; container-shaped part, 13;
Upper cover, T ₁ ~T _3; connecting flange, P _1, P _2; electromagnetic pulse pump, M _1, M _2; manometer, F _1, F _2; flow cell, C; compressor, D _1, D _2; packing , S
₁ ; First sample tube, S ₂ ; Drain for drainage, S ₃ ;
Gas inlet pipe, S ₄ ; Second sample pipe, S ₅ ; Discharge pipe,
S ₆ : water inlet pipe, S ₇ : transmission pipe, B ₁ , B ₂ ; valve,
J: filler, 2; first base material, 21; main body part, 22; lower part, 22a; upper bottom surface (bottom surface), 22b; side surface R; protrusion,
h: base material piece, 3; second base material (auxiliary base material).

Claims (6)

[Claims] 1. A fiber assembly formed by using a fiber assembly having a substantially columnar shape or a plate shape, or using a fiber assembly having two or more fiber assembly pieces arranged in a substantially columnar shape or a plate shape. A gas cleaning base material that is used by flowing down a predetermined cleaning liquid from one side to the other side, is opened at the lower end corresponding to the other side, and the groove spacing becomes wider toward the lower end. A gas cleaning substrate comprising a cutout groove. 2. The gas cleaning substrate according to claim 1, wherein the other side has an outer shape in which pyramidal or truncated pyramidal projections whose cross-sectional area becomes narrower toward the lower end are arranged. 3. Two or more fiber aggregate pieces that are substantially plate-shaped, and are appropriately cut out at one end face side to have a substantially saw-tooth shape are overlapped while aligning the one end face in one direction. Is
A substantially columnar or plate-shaped structure.
Alternatively, the gas cleaning substrate described in 2. 4. The substrate for gas cleaning according to claim 1, wherein the fiber assembly or the fiber assembly piece is formed by using water-retaining fibers. 5. The gas cleaning substrate according to claim 1, wherein each constituent fiber constituting the fiber assembly is loaded with a predetermined microorganism. 6. The gas cleaning substrate according to claim 1, wherein a predetermined microorganism is mixed in the cleaning liquid.