JPH0389912A - Laminated adsorptive body and filter using it - Google Patents

Abstract

PURPOSE:To improve deodorization and dust collection performances by parallelly disposing laminated adsorptive bodies, consisting of a first member with a plurality of protrusions and a flat-plate-like second member, and dust- collecting venting sheets in a flow direction of fluids to be treated to form a filter. CONSTITUTION:One of a first member with a plurality of protrusions and a flat-plate-like second member is formed out of electret non-woven fabrics, while the other thereof is formed out of paper containing carbon fiber having paper structure, whereby both the members are superposed on one another to provide a laminated adsorptive body A. In concrete terms, the first member 1 consisting of paper containing active carbon fibers of paper structure, having protrusions 2 thereon, and the flat-plate-like second member 3 are superposed on one another to form a laminated adsorptive body A in such a way that the protrusions overlap each other in the direction of superposition. Sheets 5 for dust collection and air flow are provided in a casing 4, while the adsorptive bodies A are stacked to form a multistage laminated construction on the downstream side of the flow of fluids to be treated, whereby a filter is provided.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention is directed to a laminated adsorbent body suitable for use in air purifiers and deodorizing devices for dust removal and deodorization by utilizing the adsorption performance of activated carbon fibers, and the same. Regarding filters using

<Prior art> As a laminated adsorbent as described above, conventionally, the
There was one shown in Publication No.-55971.

In this conventional example, a paper-like adsorption plate 01 containing activated carbon is used.
, a protrusion 02 is integrally formed by the bulge, a recess 03 is formed on the back side of the protrusion 02, and the positions of the protrusions 02 do not overlap between the suction plates 01 that are vertically adjacent to each other. The fluid to be treated is stacked like a protrusion 02...
It is configured to generate turbulent flow by colliding with the fluid and flowing into the recess 03, increasing the contact area with the fluid to be treated and improving the adsorption efficiency (No. 15).
(see figure).

Furthermore, a nonwoven fabric that electrically adsorbs and collects dust contained in gases has been developed.

<Problem to be solved by the invention> In the conventional laminated adsorption body described above, the upper and lower adsorption plates are 01.01
As shown in the cross-sectional view of FIG.
There was a drawback that the effects of 2... were reduced and the effects of the recessed surface 03 could not be expected to be sufficient.

In addition, when minute dust is mixed in the fluid to be treated, the dust easily enters the recessed surface 03..., and both the turbulent flow effect and the adsorption effect due to the recessed surface 03... However, there was a drawback that the amount decreased early and the desired effect could no longer be achieved.

In addition, with conventional dust removal and deodorization configurations, a large space is required in the flow direction of the fluid to be treated in order to install the dust removal filter and the deodorization filter side by side.
In addition, in those using activated carbon, since its specific surface area is relatively small, a large amount of activated carbon is required, and the dust removal and deodorization filter itself becomes large, resulting in a large installation space.

The present invention has been made in view of these circumstances, and the multilayer adsorbent according to the present invention is capable of improving adsorption efficiency with small pressure loss despite a large contact area. The purpose of this invention is to provide a filter that can improve deodorizing and dust removal performance.

<Means for Solving the Problems> In order to achieve the above-mentioned purpose, the laminated adsorbent according to the present invention includes a first member having a plurality of protrusions, and a flat second member. One of the members is made of a nonwoven fabric, the other is made of activated carbon fiber-containing paper having a papermaking structure, and the first member and the second member are stacked one on top of the other.

The above-mentioned activated carbon fiber-containing paper has a papermaking structure containing activated carbon fibers, and the activated carbon fibers include infusible pitch-based activated carbon fibers, activated carbon fibers obtained by activation treatment of carbon fibers, powdered or Various materials are used, such as fibers with granular activated carbon fixed to the surface of the fibers (adhered activated carbon).

Examples of the carbon fibers include polymer fibers such as polyacrylonitrile resin, phenol resin, rayon resin, cellulose resin, lignin-poval mixture, petroleum pitch type, coal pitch type, and polyacrylonitrile (PAN) type. , various types of carbon fibers such as cellulose type are used.

The nominal specific surface area of activated carbon fiber is 700 to 250 On (
Preferably it is 7g. This is because if it is less than 100 rrf/g, the adsorption capacity will be small, while if it exceeds 2500 m/g, it will be uneconomical.

Fiber-adhered activated carbon, which uses optically anisotropic porous microparticles activated with mesocarbon microbeads, has a nominal specific surface area of about 800 to 4000n (/g) and has excellent adsorption ability. There is.

When activated carbon fibers have a large number of pores and have low mechanical strength, activated carbon fiber-containing paper may be produced using the fibers and a binder.

Examples of fibers include pulp; natural fibers such as cotton and hemp; rayon fibers, acetate fibers, polyvinyl alcohol fibers, nylon fibers, aromatic polyamide fibers, acrylic fibers, polyester fibers, polyethylene fibers, polypropylene fibers, phenolic resin fibers, etc. Synthetic fibers; one or more types of inorganic fibers such as glass fibers, carbon fibers, and metal fibers are used. These fibers act as reinforcement.

Examples of the binder include polyvinyl alcohol, cellulose resin, acrylic resin, polyester resin, urethane resin, polyamide, polyethylene, polypropylene, and ethylene-11f! Synthetic resins such as vinyl copolymers, polyvinyl chloride, phenolic resins, and epoxy resins can be used. The form of the binder is liquid, powder,
Although it may be in any form such as granules, it is preferably fibrous in order to prevent the pores of the activated carbon fibers from being blocked. As the fibrous binder, the various synthetic fibers mentioned above can be used. These synthetic fibers are appropriately selected depending on the heat resistance required depending on the use of the laminated adsorbent. For example, polyethylene fibers or the like are used when the required heat resistance temperature is about 80° C. or less, and polyester fibers or the like are used when a higher heat resistance temperature is required.

The ratio of activated carbon fiber, fiber and binder is usually activated carbon fiber/fiber/binder - 60/10 to 5015.
~20 parts by weight, preferably 60/20-4015~
The amount is about 15 parts by weight.

In addition, when the activated carbon fiber has high mechanical strength such as fiber-attached activated carbon, it is sufficient that it contains at least a binder, and the ratio of the activated carbon fiber to the binder is usually 60 to 60 (activated carbon fiber/binder). 95/40-5
Parts by weight, preferably about 70-90/30-10 parts by weight.

”2 The thickness of activated carbon fiber-containing paper is usually 0.2 to 5.
mm, preferably about 0.5 to 3 mm. If the thickness is less than 0.2 mm, the mechanical strength will decrease;
Exceeding this is not only uneconomical, but also reduces the adsorption space per unit volume.

The activated carbon fiber-containing paper may contain additives such as a dispersant, a stabilizer, a viscosity modifier, and a filler within a range that does not affect the adsorption capacity.

The protrusion formed on the first member has an outer diameter of 1 to 20 mm, preferably 2 to 10 mm at the base end of the protrusion.
degree, height 0.5-10mm, preferably 1-5mm
It is formed to a certain degree. If the outer diameter and height at the base end of the protrusion are less than the above range, pressure loss will increase;
On the other hand, if it exceeds the above range, the adsorption efficiency will decrease.

The pinch between adjacent protrusions is usually 2
~40 mm, and the area of the protruding base end of the protrusion accounts for 40 to 60% of the unit area. 40%
If it is less than 60%, the turbulence effect will be small and the adsorption efficiency will be reduced, while if it exceeds 60%, the pressure loss will be large.

The shapes of the projections include polygonal pyramidal shapes such as hemispherical, conical, triangular pyramidal, and quadrangular pyramidal shapes that become smaller toward the protruding end, and shapes such as cylindrical and polygonal prisms. Moreover, the protruding end may be formed into a trapezoidal shape.

The protrusion may be solid, but it may be concave and bulge from one surface of the first member to the other surface because it is easy to manufacture and economical since it requires less material. It is preferable to have a curved shape.

Activated carbon fiber-containing paper with a papermaking structure can be obtained by preparing a dispersion liquid containing activated carbon fibers, fibers, a binder, and optionally additives such as a dispersant, a stabilizer, a viscosity modifier, and a filler. , obtained by wet paper making, followed by dehydration and drying. Various solvents can be used as the dispersion medium in the above dispersion liquid, such as water, hydrocarbons, alcohols, esters, ethers, ketones, etc., but water is used from the viewpoint of workability and ease of cleaning. is preferable. Although the dispersion liquid mentioned above can be adjusted to an appropriate concentration, usually the solid content concentration is 0.
．． It is adjusted to about 5 to 5% by weight, preferably about 1 to 3% by weight.

The weight hand-woven fabric is made of ultra-fine polypropylene, with a thickness of 0.05
It is made from threads of ~0.07 denier, and is semi-permanently charged by a heat electret method, an electroelectreft method, a magnet electret method, etc., in a direction perpendicular to the surface of the handwoven cloth. A type with a highly arranged polarization structure is used.

The weighted handwoven fabric may have electrical polarization directed in any direction, but it is preferable to have a polarization structure highly aligned in the direction perpendicular to the surface of the weighted handwoven fabric. This is because if the material has a highly arranged polarization structure, the dust itself adsorbed to the heavy handwoven cloth will have polarity in a predetermined direction, and more dust can be collected. For example, in the case of collecting positively charged dust, the hand-woven cloth having a weight is laminated with activated carbon fiber-containing paper so that the surface that comes into contact with the fluid to be treated becomes a negative electrode. On the other hand, when collecting oil from negatively charged dust, it is necessary to laminate paper containing activated carbon fiber so that the surface in contact with the fluid to be treated becomes the positive electrode. It is preferable to set the surface so that the polarity of the surface on the side where the dust is charged has a polarity that corresponds to the charged state of the dust.

This is because dust is easily collected by being electrically attracted to the surface of the heavy handwoven cloth.

The first filter using the laminated adsorbent according to the present invention is constructed by arranging the above-mentioned laminated adsorbent and the dust removal ventilation sheet in parallel in the flow direction of the fluid to be treated.

Further, a second filter using a laminated adsorbent according to the present invention is constructed by arranging the above-described laminated adsorbent and a dust removal ventilation sheet in parallel in a direction perpendicular to the flow direction of the fluid to be treated.

As the dust removal ventilation sheet, a pleated nonwoven fabric, a honeycomb processed nonwoven fabric, or the like is used.

<Function> According to the configuration of the laminated adsorbent of the present invention, the protrusions are used as spacers, and the fluid to be treated collides with the protrusions to create a turbulent flow, so that the fluid to be treated is brought into good contact with the first and second parts. The nonwoven fabric can electrically attract and collect dust to remove dust, and the activated carbon fiber-containing paper can also absorb and remove odor components, harmful components, organic solvents, and the like.

According to the configuration of the first filter of the present invention, the fluid to be treated is passed through both the above-described laminated adsorbent and the dust removal ventilation sheet, and the fluid to be treated after dust removal by the dust removal ventilation sheet is Then, dust is further removed using a laminated adsorbent and odor components, harmful components, organic solvents, etc. Dust can be further removed from the fluid to be treated using the dust removal ventilation sheet.

Further, according to the configuration of the second filter of the present invention, the fluid to be treated that has passed through the laminated adsorbent is subjected to dust removal and adsorption removal of odor components, harmful components, organic solvents, etc.; By removing dust from the fluid that has passed through the ventilation sheet and passing it through the filter repeatedly, it is possible to remove dust from the fluid and adsorb and remove odor components, harmful components, organic solvents, etc. .

<Example> Next, an example of the present invention will be described in detail based on the drawings.

Figure 1 is a perspective view showing a sheet-like laminated adsorbent, and Figure 2 is a sectional view showing Example 1 of the laminated adsorbent.

In these figures, 1 indicates a first member made of activated carbon fiber-containing paper of papermaking structure, and this first member 1
The protrusions 2 are formed at a predetermined pitch in the surface direction by recessing from one surface and protruding from the other surface.

Further, 3 indicates a flat second member formed of a nonwoven fabric, and the first member 1 having the projections 2 and the flat second member 3 are connected to the upper and lower projections 2. The laminated adsorbent body A is constructed by alternately overlapping each other in a stacking direction view.

Fig. 3 (A) is a sectional view showing Example 2 of the laminated adsorbent, in which the positions of the upper and lower protrusions 2 are shifted from each other in the stacking direction. The first having...
The laminated adsorbent A is constructed by alternately stacking the member 1 and the second member 3 in the form of a flat plate.

3 (B) is a sectional view showing Example 3 of the laminated adsorbent, in which the first member 1. The protrusions 2... are superimposed with their proximal ends in contact with each other, and a flat plate-like second member 1.1 is placed on each of the first members 1.1 having the protrusions 2... The laminated adsorbent A is constructed by stacking the members 3 so as to be located on the top side of the protrusions 2 .

(C) of FIG. 3 is a cross-sectional view showing Example 4 of the laminated adsorbent, in which a flat second member 3 is sandwiched between protrusions 2...
The first member 1.1 having the protrusions 2... is stacked on top of the protrusions 2... with their top sides in contact with each other, and the first member 1.1 having the protrusions 2... The second member 3 is stacked on top of each other so as to be located on the proximal end side of the protrusions 2 . . . to form a laminated adsorbent A. According to the fourth embodiment, by interposing the intermediate second member 3, there is a gap between the second member 3 and the first member 1 regardless of the positions of the upper and lower projections 2... This has the advantage of reliably securing a flow path through which the fluid to be treated passes.

Example 1 FIG. 3 (I) is a sectional view showing Example 5 of the laminated adsorbent, in which solid protrusions 2... are formed on the first member 1. , a first member 1 having protrusions 2 . . . and a flat second member 3 are superimposed to form a laminated adsorbent.

Implementation - Example Tamaichi Figure 4 is a sectional view showing Example 6 of the laminated adsorbent.
A first member I having protrusions 2 and a flat second member 3 are overlapped to form a band-shaped sheet, and the band-shaped sheets are laminated by winding to form a laminated adsorbent. A is configured.

Figure 5 is a sectional view showing Example 7 of the laminated adsorbent;
A first member 1 having protrusions 2... and a flat second member 3 are overlapped to form a band-shaped sheet, and the band-shaped sheet 1 is folded into a wavy or folded shape. A laminated adsorbent body A is constructed by laminating them by bending them. Note that the protrusions 2... in the first part + A1 are formed using a normal embossing machine or the like (an example of this is shown in Japanese Patent Application No. 1-17995 filed earlier by the present applicant). In addition, if the protrusion 2 is large, it may be difficult to emboss it using an embossing machine, for example,
It is also possible to form by suction molding or the like during paper making.

As exemplified above, there are various ways of overlapping the first member 1 and the second member 3, but in any of the ways, the first member 1 having the protrusions 2 is covered with a non-woven fabric made of electrolyte. A sheet-like laminated adsorbent A is manufactured by overlapping the formed second plate-like members 3. At this time, in order to improve the integrity and workability, it is preferable to appropriately join the tops of the protrusions 2 of the first member 1 or the flat parts on the four-face side to the second member 3. This is because pressure loss due to fluid flowing into the recessed surface can be reliably prevented.

The obtained sheet-like laminated adsorbent A is preferably cut into a desired shape and size depending on the intended use.

For example, when used as a filter for an air purifier or a deodorizing device, it is preferable to cut into long pieces with a width of about 5 to 20 mm. This is because although the first and second members 1 and 3 may be laminated after being cut to a predetermined size, for example, when producing a household air purifier filter with a small depth, the lamination This will complicate the work, and it is also possible to stack a plurality of sheets onto a sheet-like laminated adsorbent and then cut them into a predetermined size. This is because it is difficult to accurately cut into a predetermined size because it has restorability.

Next, a description will be given of the results of a comparative experiment regarding pressure loss conducted using a specific example that further embodies a predetermined one of the previous jAe examples and a comparative example.

Body 11 Ayu-gumi 60 parts by weight of pinch activated carbon fiber with a nominal specific surface area of 100 g/rf+, 30 parts by weight of hemp, 10 parts by weight of polyester fiber as a fibrous binder, 0.27 parts by weight of polyethylene oquinide as a viscosity modifier. and 5,000 parts by weight of water were mixed and stirred in a mixing tank, paper was made using a wet paper making method, dehydrated, and then dried in a dryer to form a paper of 600 mm.
A first member was produced by producing activated carbon fiber-containing paper with a size of X 1000+nm and 1 mm, and then using an embossing machine to form a large number of four-protrusion-shaped protrusions with an outer diameter of 8 mm and a height of 2 mm. did.

On the other hand, electric stones are made from ultra-fine polypropylene threads of 0.05 to 0.07 tenyl, and are semi-permanently charged with a thermal electret method, electroelectreft method, or magnet electreft method. Torekuron WR-30 (manufactured by Toshi Co., Ltd.: thickness 0.2ON, basis weight 30g/bo, pore volume 83.6% , surface charge density 3X]O-9~IXIO-"
A second plate-shaped member was produced using Coulomb/C plane).

A sheet-like laminated adsorbent is produced by superimposing a flat second member on the first member having the protrusion, and the sheet-like laminated adsorbent is
Cut into strips of 0 mm x 10+++ m and stack them to form the laminated adsorbent of Example 2 described above [(see Fig. 3).
A) Reference 1 was created.

And 1114 states (600n+m x 1 in the same manner as in the above specific example 1
A large number of concave and bulging protrusions with an outer diameter of 8 mm and a height of 2.5 mm were formed on a 00100O1.5 mm activated carbon fiber-containing paper.

The activated carbon fiber-containing paper was used as a first member, and a flat second member made of the same nonwoven fabric as in Example 1 was superimposed on this first member to produce a sheet-like laminated adsorbent. Then, it was cut into strips of 370 mm x] Omm, and these were stacked to form the laminated adsorbent of Example 3 [
Refer to FIG. 3 (B)].

114 Pieces 1 The activated carbon fiber-containing paper of Specific Example 2 above was used as a first member, and a flat second member made of the same electric stone nonwoven fabric as in Specific Example 1 was superimposed on this first member. Together, a sheet-like laminated adsorbent was made, and it was sized 370mm x 10n.
The laminated adsorbent of Example 2 described above [see FIG. 3 (A)] was produced by cutting into +m strips and stacking them.

Kitamoto quantity 47 The first members of the above specific example 1 were stacked on top of each other with the protrusions extending in the same direction to produce a laminated adsorbent.

Based on the comparison, the first members of the above-mentioned specific example 1 were compared with each other in the above-mentioned example 3.
[See Figure 3 (B)] to a flat plate-shaped second
A laminated adsorbent was produced by stacking the protrusions so that the four-faced sides of the protrusions faced each other so as to have a structure in which the members were removed.

A sample filter for a hot air heater with a length of 370 mm, a height of 180 mm, and a width of 10 mm was prepared using the laminated adsorbents of the above-mentioned specific examples 1 to 3 and comparative examples 1 and 2, and the pressure loss was measured. Using the device, the pressure loss at a surface wind speed of 1 m/sec was measured, and the results shown in the table were obtained.

(Hereinafter, blank space) As a result of the above, the filter using the laminated adsorbent of the specific example of the present invention can significantly reduce pressure loss and reduce the pressure loss per unit time compared to the filter using the laminated adsorbent of the comparative example. It was clear that the velocity of the fluid being processed could be increased and the throughput could be increased.

Furthermore, when various fluids were passed through it, it was clear that it had high adsorption performance for odor components such as ammonia, hydrogen sulfide, and methyl ethyl mercaptan, and IQ solvents such as toluene, as well as high ozone decomposition ability. Furthermore, this laminated adsorbent was flame retardant.

Next, examples of various filters constructed using the laminated adsorbent according to the present invention will be described.

Figure 6 is a partially cutaway perspective view showing Example 1 of the filter, in which the laminated adsorbent A of Example 1 described above is attached to the casing 4.
The filters are stacked and housed in multiple stages to form a filter.

FIG. 7 is a partially cutaway perspective view showing Example 2 of the filter, in which a dust removal vent is formed by pleating a nonwoven fabric at the upstream side of the casing 4 in the flow direction of the fluid to be treated. The dust removal ventilation sheet 5 is housed, and the dust removal ventilation sheet 5
The laminated adsorbents A of Example 1 described above are stacked and housed in multiple stages so as to be lined up on the downstream side in the flow direction of the fluid to be treated, thereby forming a filter. Example 2 of this filter corresponds to Example 1 of the first filter according to the present invention.

2 is a perspective view, in which a dust removal ventilation sheet 6 formed by honeycomb-processing a nonwoven fabric is housed in a position on the upstream side of the casing 4 in the flow direction of the fluid to be treated, and The laminated adsorbents A of Example 1 described above are stacked and housed in multiple stages so as to be arranged in a row on the downstream side in the fluid flow direction, thereby forming a filter. This third embodiment of the filter also corresponds to the first embodiment of the filter according to the present invention.

Figure 9 is a partially cutaway perspective view, not showing Example 4 of the filter, and shows that a nonwoven fabric is placed in the lower half of the casing 4 in the direction perpendicular to the flow direction of the fluid to be treated. The pleated dust removal/ventilation sheets 1-7 are accommodated, and are lined up in the upper half of the dust removal/ventilation sheet 7 in the direction perpendicular to the flow direction of the fluid to be treated. A filter is constructed by stacking and storing the adsorbents in multiple stages. Example 4 of this filter corresponds to the second example of the filter according to the present invention.

Figure 10 is a partially cutaway perspective view showing Example 5 of the filter, in which the layered adsorbent A of Example 6 described above is accommodated in a casing 4 to constitute the filter.

FIG. 11 is a partially cutaway perspective view of the filter according to Example 6, and shows a dust removal vent formed by honeycomb-processing a nonwoven fabric at a position on the upstream side of the flow direction of the fluid to be treated in the casing 4. The sheet 8 is housed, and arranged in a position on the downstream side of the dust removal ventilation sheet 8 in the flow direction of the fluid to be treated.
The laminated adsorbents A of Example 6 described above are stacked and housed in the winding mucosa to constitute a filter. Example 6 of this filter also corresponds to the example of the first filter according to the present invention.

Fig. 12 is a partially cutaway perspective view, not showing Example 7 of the filter, and shows that the lower half of the casing 4 in the direction orthogonal to the flow direction of the fluid to be treated is A dust removal ventilation sheet 9 formed by pleating a nonwoven fabric is housed, and the dust removal ventilation sheet 9 is arranged in the above-described embodiment in a direction perpendicular to the flow direction of the fluid to be treated. 6 laminated adsorbents are stacked and housed by winding to form a filter. Example 7 of this filter also corresponds to the example of the second filter according to the present invention.

” In both of the laminated adsorbents of the second embodiment, the protrusions 2 and
The first member 1 having... is formed of activated carbon fiber-containing paper, and the flat second member 3 is formed of a nonwoven fabric of electric stones. ...
The second member 1 having the above structure may be formed of a nonwoven fabric, while the second plate-shaped member 3 may be formed of paper containing activated carbon fiber.

The electrolyte nonwoven fabric is not limited to the one in the two-part embodiment, but has a polarization structure highly arranged in the direction perpendicular to the surface of the electrolyte nonwoven fabric, such as Toremicron WR-
20 (manufactured by Toshi Co., Ltd.: thickness 0.15 mm, basis weight 20 g
/n(, pore volume 80.7%, surface charge density 3X10
-' ~ l
, a basis weight of 50 g/n', a pore volume of 86.5%, and a surface charge density of 3XlO-9~]Xl0-''Coulomb/(bo) can also be applied.

The laminated adsorbent according to the present invention can be used as a deodorizing/dust removing filter for household and commercial air purifiers, an ozone removing filter, a deodorizing/dust removing filter for automobile air purifiers, and for hot air heaters and air conditioners. Deodorizing and dust removal filters, pre-filters for air conditioning in clean rooms, etc.
It can be applied to filters for various purposes.

<Effects of the Invention> As is clear from the above description, according to the laminated adsorbent of the present invention, a flow path is secured between the first member and the second member using the protrusions as spacers, and the fluid to be treated is collides with the protrusion and creates turbulent flow. Therefore, unlike the conventional example, there is no pressure loss or accumulation of dust due to the flow into the recess, and the fluid to be treated can be brought into good contact with the first and second members. In addition, the adsorption efficiency of the activated carbon fiber-containing paper can be improved, and odor components, harmful components, organic solvents, etc. can be effectively removed. Further, dust can be electrically collected by the electric stone nonwoven fabric, and dust can be efficiently captured and dust removal can be performed extremely well.

Moreover, since the flat second member is interposed between the first members on which protrusions are formed, the protrusions do not enter into the recesses unlike the conventional example, and there is no need to consider the position of the protrusions. Can be stacked.

Furthermore, since the activated carbon fiber-containing paper with deodorizing performance and the electrified nonwoven fabric with high dust removal performance are integrated, the structure as a whole is extremely compact and requires only a small installation space.

According to the first and second filters of the present invention, dust removal from the fluid to be treated is performed not only by the laminated adsorbent but also by the dust removal ventilation sheet. In this way, the dust removal efficiency can be further improved, and it can be suitably used even for fluids to be treated that contain a large amount of dust.

[Brief explanation of drawings]

The drawings show examples of a laminated adsorbent and a filter using the same according to the present invention, FIG. 1 is a perspective view of a sheet-like laminated adsorbent, and FIG. 2 shows Example 1 of the laminated adsorbent. FIG. 3(A) is a sectional view showing Example 2 of the laminated adsorbent; FIG. 3(B) is a sectional view showing Example 3 of the laminated adsorbent; FIG. (C) is Example 4 of the laminated adsorbent
FIG. 3(D) is a cross-sectional view showing Example 5 of the laminated adsorbent, FIG. 4 is a cross-sectional view showing Example 6 of the laminated adsorbent, and FIG. 6 is a partially cutaway perspective view showing Example 1 of the filter, FIG. 7 is a partially cutaway perspective view showing Example 2 of the filter, and FIG. 8 is a partially cutaway perspective view showing Example 2 of the filter. , FIG. 9 is a partially cutaway perspective view showing Example 3 of the filter, FIG. 9 is a partially cutaway perspective view showing Example 4 of the filter, and FIG. 10 is a partially cutaway perspective view showing Example 5 of the filter. Fig. 11 is a partially cutaway perspective view showing Example 6 of the filter, Fig. 12 is a partially cutaway perspective view showing Example 7 of the filter, and Fig. 13 is a problem with the conventional laminated adsorbent. FIG. 1...First member 2...Protrusion 3...Second member 5゜6゜8゜...Dust removal ventilation sheet

Claims (3)

[Claims] (1) One of the first member on which a plurality of protrusions are formed and the second member in the form of a flat plate is formed of a nonwoven fabric, and the other is formed of activated carbon fiber-containing paper with a papermaking structure, and the A laminated adsorption body characterized in that a first member and the second member are stacked on top of each other. (2) A filter in which the laminated adsorbent according to claim (1) and a dust removal ventilation sheet are arranged side by side in the flow direction of the fluid to be treated. (3) A filter in which the laminated adsorbent according to claim (1) and a dust removal ventilation sheet are arranged side by side in a direction perpendicular to the flow direction of the fluid to be treated.