Suction element block, suction rotor, suction processing apparatus, and processing system

Abstract

To provide an adsorption element block capable of achieving high removable performance and high condensation to a substance to be treated, long term stabilization of removable performance to a substance to be treated, and downsizing, and to provide an adsorption rotor, an adsorption treatment apparatus, and a treatment system.SOLUTION: An adsorption element block 140 is constituted by filling an adsorption element 142 through which gas may pass, in a casing 141 having an introduction opening 141a and a discharge opening 141b, where the casing 141 is constituted so that all the gas introduced from the introduction opening 141a passes the adsorption element 142, and thereafter is discharged from the discharge opening 141b, the adsorption element 142 includes an active carbon fiber nonwoven fabric, and the active carbon fiber nonwoven fabric has a total basis weight of 600-6,000 g / m2, a toluene adsorptivity of 25-75 wt.%, and a fiber diameter of 15-120 μm.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present disclosure relates to an adsorption element block, an adsorption rotor, an adsorption treatment device, and a treatment system.

Background Art

[0002] Conventionally, a concentrator for a gas (gas to be treated) containing a substance to be treated with a large air volume and a low concentration has been known. In a conventional concentrator, the gas to be treated is passed through an adsorption element of a honeycomb structure, and the substance to be treated is adsorbed and removed by the adsorption element. The adsorbed substance to be treated is desorbed from the adsorption element using a small amount of heated air. By treating the gas (concentrated gas) containing the desorbed substance to be treated with a small air volume and a high concentration in a secondary treatment device such as a combustion device, the total cost of exhaust gas treatment can be reduced.

[0003] A hollow cylindrical rotor type (cylinder type) adsorption treatment device using an adsorption rotor in which a standard adsorption element is arranged on the side surface of a hollow cylindrical cylinder is disclosed, for example, in Japanese Patent Laid-Open No. 63-84616 (Patent Document 1).

[0004] In Japanese Patent Laid-Open No. 2019-209269 (Patent Document 2), a more compact adsorption treatment device is disclosed by optimizing the number of cells serving as gas passages and the content rate of the adsorbent contained in the adsorption element in the honeycomb structure.

[0005] In Japanese Patent Laid-Open No. 6-126122 (Patent Document 3), a cylinder type adsorption treatment device using a non-woven mat of activated carbon fibers as an adsorption element is disclosed.

[0006] In Japanese Patent Laid-Open No. 54-145372 (Patent Document 4), a continuous harmful gas adsorption / desorption device using activated carbon fibers in an adsorption cartridge is disclosed.

[0007] In Japanese Patent Application Laid-Open No. 6-343814 (Patent Document 5), the apparatus configuration of a rotary adsorption / desorption type gas treatment apparatus is disclosed, in which the adsorbent cassette has a portion where the mat-shaped adsorbent is perpendicular or inclined to the drum end face direction in its mounted state.

[0008] In Japanese Patent Application Laid-Open No. 2001-120939 (Patent Document 6), a rotary adsorption / desorption type gas treatment apparatus is disclosed, which is provided with a wind shielding wall that prevents one air passage chamber in the rotor from communicating with the ventilation port of the gas to be treated system and the ventilation port of the desorption gas system at the same time.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Summary of the Invention

Problems to be Solved by the Invention

[0010] In the adsorption treatment apparatus as disclosed in the above documents, higher removal performance is required for the substance to be treated.

[0011] In the concentration apparatus, the smaller the air volume and the higher the concentration of the concentrated gas, the smaller the combustion apparatus of the secondary treatment apparatus can be made, and the operating energy of the combustion apparatus can also be reduced. Therefore, further high concentration is required.

[0012] When considering improving the adsorption element of the honeycomb structure used in the conventional adsorption rotor for high concentration, it is necessary to increase the adsorption capacity per unit volume of the adsorption element. As measures, for example, increasing the ratio of the adsorbent contained in the adsorption element or reducing the cell size can be cited. However, in Patent Document 2, the adsorbent contained in the adsorption element has achieved a high ratio of 65 to 85 wt.%, and even if the ratio is further improved, the effect of high concentration is small and there is a concern of reducing the mechanical strength of the adsorption element. In addition, when the honeycomb structure is made into small cells, the pressure loss of the adsorption element increases, and a huge amount of energy is required to ventilate the gas to be treated or the heated air to the adsorption rotor.

[0013] By the way, activated carbon fiber nonwoven fabric is known to have a larger adsorption capacity and a faster adsorption / desorption rate than other adsorption elements. Therefore, an adsorption treatment device using activated carbon fiber nonwoven fabric as an adsorption element as disclosed in Patent Document 3 is expected to be able to achieve higher concentration than when using a honeycomb structure as an adsorption element. However, since general activated carbon fiber nonwoven fabric has a very high pressure loss, it is necessary to reduce the thickness of the activated carbon fiber nonwoven fabric when applying it to a concentration device for treating a large volume of gas to be treated. As a result, there is a concern that the adsorption efficiency for the substance to be treated may decrease.

[0014] In addition, since the tensile strength and elongation at break of single filaments of activated carbon fibers are significantly lower than those of general fibers, the fibers may be damaged by repeated ventilation with or without ventilation of the activated carbon fiber nonwoven fabric, or repeated alternating ventilation in the countercurrent direction, and the thickness of the activated carbon fiber nonwoven fabric may decrease over time and may not be able to maintain its original shape. As a result, a short circuit of the gas to be treated may occur in the adsorption rotor, and the adsorption efficiency for the substance to be treated may decrease early.

[0015] In addition, in the adsorption treatment device disclosed in the above patent document, a partition is provided between a plurality of adsorption elements. The partition is a member without an air flow path for fixing the adsorption element to the hollow cylindrical tube and for preventing leakage of the gas to be treated. Since the volume occupied by the partition in the adsorption treatment device becomes a dead space that does not directly contribute to the treatment of the gas to be treated, the required space increases accordingly and the device becomes larger.

[0016] An object of the present disclosure is to provide an adsorption element block, an adsorption rotor, an adsorption treatment device, and a treatment system that enable high removal performance, high concentration, long-term stabilization of the removal performance for the substance to be treated, and miniaturization with respect to the substance to be treated.

Means for Solving the Problems

[0017] According to an aspect of the adsorption element block of the present disclosure, an adsorption element block filled with an adsorption element through which gas can pass is provided in a housing having an introduction opening and a discharge opening, and all the gas introduced from the introduction opening is configured to be discharged from the discharge opening after passing through the adsorption element. The adsorption element includes activated carbon fiber nonwoven fabric, and the activated carbon fiber nonwoven fabric has a total basis weight of 600 to 6000 g / m 2 , a toluene adsorption rate of 25 to 75 wt.%, and a fiber diameter of 15 to 120 μm.

[0018] In the above adsorption element block, the adsorption elements are arranged such that the gas flows while intersecting.

[0019] In the above adsorption element block, the activated carbon fiber nonwoven fabric has a bulk density of 50 to 200 kg / m 3 , a compression ratio of 30% or less, and a compression elastic modulus of 80% or more.

[0020] In the above adsorption element block, the activated carbon fiber Non-woven fabric is mainly composed of at least one or more of phenolic resin fiber, cellulose fiber, and polyphenylene ether fiber as a precursor.

[0021] In the above adsorption element block, in the housing, a plurality of the adsorption elements are stacked.

[0022] In the above adsorption element block, in the housing, one adsorption element is folded and arranged in a stacked state.

[0023] In the above adsorption element block, the adsorption element block has a pressure loss of 1000 Pa or less and a thickness in the gas flow direction of 500 mm or less.

[0024] In the above adsorption element block, the adsorption element block has a toluene adsorption amount [kg] per internal volume [m 3 of 12 to 70 kg / m 3 by There is.

[0025] According to an aspect of the adsorption rotor of the present disclosure, a hollow cylindrical adsorption rotor that rotates around a cylinder axis, including a plurality of adsorption element blocks filled with adsorption elements through which gas can pass, and a plurality of partition parts through which gas cannot pass, the adsorption element blocks and the partition parts are alternately arranged in the circumferential direction around the cylinder axis, and the adsorption element block is the adsorption element block described in any of the above.

[0026] According to an aspect of the adsorption treatment apparatus of the present disclosure, it includes the adsorption rotor described above and a flow path forming member that forms a flow path for gas passing through the adsorption element block provided in the adsorption rotor.

[0027] In the above adsorption treatment apparatus, the flow path forming member forms a gas flow path so that a gas to be treated containing an organic solvent or a heating gas for desorbing the organic solvent from the adsorption element passes through the adsorption element block located at a set rotation phase in the rotation of the adsorption rotor in the radial direction around the cylinder axis.

[0028] According to an aspect of the processing system of the present disclosure, it includes the adsorption processing device described above, a pretreatment device that processes the fluid to be treated before introducing it into the adsorption processing device, and / or a post-treatment device that processes the desorbed gas discharged from the adsorption processing device.

Advantages of the Invention

[0029] According to the present disclosure, in the adsorption element block, the adsorption rotor, the adsorption processing device, and the processing system, it is possible to achieve high removal performance for the substance to be treated, high concentration, long-term stabilization of the removal performance for the substance to be treated, and miniaturization.

Brief Description of the Drawings

[0030]

Figure 1

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Figure 18

Modes for Carrying Out the Invention

[0031] The adsorption element block, adsorption rotor, adsorption unit, adsorption processing apparatus, and processing system according to each embodiment based on the present disclosure will be described below with reference to the drawings. In the embodiments described below, when referring to the number, amount, etc., unless otherwise specified, the scope of the present invention is not necessarily limited to the number, amount, etc. The same parts and corresponding parts are given the same reference numerals, and duplicate explanations may not be repeated. It is initially planned to use the configurations in the embodiments in appropriate combinations.

[0032] [Embodiment 1: Adsorption Processing Apparatus 100] FIG. 1 is a longitudinal sectional view of the adsorption processing apparatus 100 according to the present embodiment. FIG. 2 is a sectional view of the adsorption processing apparatus 100 taken along the line II-II shown in FIG. 1. FIG. 3 is an enlarged sectional view of the main part of the adsorption rotor 90 shown in FIG. 2.

[0033] As shown in FIGS. 1 to 3, the adsorption processing apparatus 100 includes an adsorption rotor 90. The adsorption rotor 90 is installed in the processing chamber 1. The adsorption rotor 90 is provided so that fluid can flow in the radial direction. The adsorption rotor 90 is rotatably provided around the cylinder axis C by receiving the rotational driving force of the motor 3. The adsorption rotor 90 is rotatably supported on a plurality of support members 6 such as columns so that the cylinder axis C direction faces the vertical direction, but it may be in a form where the cylinder axis C direction faces the horizontal direction. The curved arrows shown in FIGS. 2 and 3 indicate the rotational direction of the adsorption rotor 90.

[0034] The adsorption rotor 90 is composed of a pair of hollow disks 10, a plurality of partition parts 20, and a plurality of adsorption element blocks 30.

[0035] The pair of hollow disks 10 includes a first hollow disk 11 and a second hollow disk 12. The first hollow disk 11 and the second hollow disk 12 have an annular plate shape and are arranged such that their respective centers are on the cylinder axis C. An opening 11a is formed in the central portion of the first hollow disk 11. The first hollow disk 11 and the second hollow disk 12 are arranged in parallel with a distance therebetween so that the partition parts 20 and the adsorption element blocks 30 can be arranged therebetween.

[0036] The adsorption rotor 90 is formed in a cylindrical shape by alternately arranging a plurality of partition parts 20 and a plurality of adsorption element blocks 30 in the circumferential direction around the cylinder axis C between the pair of hollow disks 10. The adsorption rotor 90 has a hollow cylindrical shape as a whole, and a cylinder hole 90a (central space portion) is formed. The cylinder hole 90a communicates with the opening 11a of the first hollow disk 11.

[0037] The plurality of partition parts 20 partition the space between the pair of hollow disks 10 into a plurality of space parts S (see FIG. 3) that are independent of each other in the circumferential direction around the cylinder axis C. The partition part 20 is a member that does not have an air flow path and through which gas cannot pass. The partition part 20 is attached between the pair of hollow disks 10 so as to be airtight and / or liquidtight.

[0038] Each partition portion 20 includes a main body portion 21 and a seal portion 22. The main body portion 21 is formed of stainless steel, iron, or the like, and constitutes the skeletal portion of the partition portion 20. The main body portion 21 has a triangular tube shape. The main body portion 21 has a top edge portion located on the inner peripheral side of the suction rotor 90 and a bottom surface portion of the main body portion 21 located on the outer peripheral side of the suction rotor 90. The plurality of partition portions 20 are arranged such that the centroids of the triangles when the main body portion 21 is viewed in plan are equally spaced in the circumferential direction around the cylinder axis C.

[0039] The seal portion 22 is provided around the main body portion 21. The seal portion 22 may be integrally formed with the main body portion 21 or may be formed of a separate member from the main body portion 21. When the seal portion 22 is formed of a separate member from the main body portion 21, the seal portion 22 may be joined to the main body portion 21 by adhesion or the like, or may be configured to be attachable and detachable to / from the main body portion 21.

[0040] The seal portion 22 of the present embodiment has an inner peripheral side seal portion 23 and an outer peripheral side seal portion 24. The inner peripheral side seal portion 23 is located on the inner side (the side closer to the cylinder axis C) with respect to the main body portion 21 in the radial direction of the suction rotor 90. The outer peripheral side seal portion 24 is located on the outer side (the side away from the cylinder axis C) with respect to the main body portion 21 in the radial direction of the suction rotor 90. The inner peripheral side seal portion 23 is provided so as to protrude radially inward of the suction rotor 90 from the top edge portion of the main body portion 21. The outer peripheral side seal portion 24 is provided so as to protrude radially outward of the suction rotor 90 from the bottom surface portion of the main body portion 21.

[0041] The inner peripheral side seal portion 23 and the outer peripheral side seal portion 24 of the present embodiment each have a rib-like shape that extends in the axial direction (the direction in which the cylinder axis C extends) of the suction rotor 90 and also extends in the radial direction of the suction rotor 90. The inner peripheral side seal portion 23 has a seal surface 23a. The outer peripheral side seal portion 24 has a seal surface 24a. The seal surfaces 23a, 24a intersect the rotation direction of the suction rotor 90.

[0042] A seal member 40 is installed on the inner peripheral side seal portion 23 and the outer peripheral side seal portion 24. The seal member 40 is formed of, for example, an elastic rubber material or the like and has airtightness and / or liquid tightness. The seal member 40 may have a function of partitioning an adsorption region where an adsorption process of adsorbing the gas to be treated to the adsorption element block 30 is performed and a desorption region where a desorption process of desorbing the gas to be treated from the adsorption element block 30 is performed, and / or a function of preventing leakage of the gas to be treated between the adsorption treatment apparatus 100 and the treatment chamber 1.

[0043] The seal member 40 includes an inner seal member 41 located on the inner peripheral side of the adsorption rotor 90 and an outer seal member 42 located on the outer peripheral side of the adsorption rotor 90. The inner seal member 41 is installed on the seal surface 23a of the inner peripheral side seal portion 23. The inner seal member 41 protrudes from the partition portion 20 toward the inner side in the radial direction of the adsorption rotor 90. The outer seal member 42 is installed on the seal surface 24a of the outer peripheral side seal portion 24. The outer seal member 42 protrudes from the partition portion 20 toward the outer side in the radial direction of the adsorption rotor 90. The inner seal member 41 and the outer seal member 42 extend between a pair of hollow disks 10 from one hollow disk (the first hollow disk 11) to the other hollow disk (the second hollow disk 12).

[0044] The adsorption element block 30 is a member filled with an adsorption element through which a gas such as the gas to be treated can pass so as to intersect. The adsorption element block 30 of the embodiment allows the gas to pass from the outer peripheral surface of the adsorption rotor 90 toward the cylindrical hole 90a. Each adsorption element block 30 is accommodated in any one of a plurality of independent space portions S. The plurality of adsorption element blocks 30 are arranged side by side at intervals in the circumferential direction of the adsorption rotor 90. A partition portion 20 is arranged between two adjacent adsorption element blocks 30 in the circumferential direction of the adsorption rotor 90.

[0045] Each adsorption element block 30 has a rectangular parallelepiped outer shape. The adsorption element block 30 has four first sides extending in the axial direction of the adsorption rotor 90, four second sides extending in the radial direction of the adsorption rotor 90, and four third sides extending orthogonally to the first and second sides. In the adsorption element block 30 of the embodiment, the first side is significantly longer compared to the second and third sides. The adsorption element block 30 has a rectangular parallelepiped shape with the first side as the long side. The cross-sectional shape of the adsorption element block 30 orthogonal to the cylinder axis C is a square or a rectangle.

[0046] For the adsorption element block 30, for example, the adsorption element block 130 shown in FIG. 5 is used. The adsorption element block 130 in the present embodiment is filled such that one or more layers of activated carbon fiber non-woven fabric 132a are laminated as the adsorption element (see FIG. 5). By passing the gas to be treated through the inside of the activated carbon fiber non-woven fabric 132a, the collision efficiency with the substance to be treated is improved, and the adsorption efficiency is improved. On the other hand, when supplying heated air to desorb the adsorbed substance to be treated, the contact efficiency between the activated carbon fiber non-woven fabric 132a and the heated air is also improved, and thermal energy is efficiently transmitted to the activated carbon fiber non-woven fabric 132a, so the air volume of the heated air can be reduced. That is, by using the activated carbon fiber non-woven fabric 132a as the adsorption element, high removal performance can be exhibited, and further high concentration can be achieved.

[0047] The total basis weight of the activated carbon fiber non-woven fabric 132a is 600 g / m 2 or more and 6000 g / m 2 or less is preferable. If the total basis weight is less than 600 g / m 2 , the collision efficiency with the substance to be treated deteriorates, and the adsorption performance as the adsorption element block 130 is inferior. If the total basis weight exceeds 6000 g / m 2 , the pressure loss increases, and the gas cannot be ventilated sufficiently. From the balance of adsorption performance and pressure loss, the total basis weight is more preferably 1200 g / m 2 or more and 4000 g / m 2 .

[0048] The toluene adsorption rate of the activated carbon fiber nonwoven fabric 132a is preferably 25 wt.% or more and 75 wt.% or less. When the toluene adsorption rate is 25 wt.% or less, the adsorption performance is lower than that of the adsorption elements of the prior art. In addition, activated carbon fibers with a high toluene adsorption rate have a large total pore volume, so the bulk density of the fibers is low. Therefore, when the toluene adsorption rate exceeds 75 wt.%, the tensile strength of the single fiber decreases, the tensile strength and compression elastic modulus of the activated carbon fiber nonwoven fabric decrease, and the shape stability as an adsorption element decreases. Considering the balance between adsorption performance and shape stability, the toluene adsorption rate is more preferably 30 wt.% or more and 70 wt.% or less.

[0049] The fiber diameter of the activated carbon fibers constituting the activated carbon fiber nonwoven fabric 132a is preferably 15 μm or more and 120 μm or less. When the fiber diameter is less than 15 μm, the pressure loss increases and the gas cannot be ventilated sufficiently. When the fiber diameter exceeds 120 μm, the collision efficiency with the substance to be treated decreases, the adsorption efficiency decreases, and the adsorption performance as the adsorption element block 130 is inferior. In addition, since the contact efficiency with the heated air decreases, it becomes difficult for thermal energy to be transmitted to the activated carbon fiber nonwoven fabric 132a, so the air volume of the heated air increases. Furthermore, the flexibility of the activated carbon fiber nonwoven fabric 132a decreases, making it difficult to process into the adsorption element block 130. Considering the balance between pressure loss, adsorption performance, heated air volume, and processability into the adsorption element block 130, the fiber diameter is 15 μm or more and 120 μm Following is more preferable.

[0050] The pressure loss of the adsorption element block 130 is preferably 1000 Pa or less, and more preferably 800 Pa. When the pressure loss is 1000 Pa or more, the gas cannot be ventilated sufficiently. The lower limit value of the pressure loss is usually 50 Pa or more.

[0051] The thickness of the adsorption element block 130 is preferably 500 mm or less, and more preferably 300 mm or less. Since the adsorption element block 130 has a rectangular parallelepiped block shape, the size of the adsorption rotor that arranges the adsorption element block 130 in a hollow cylindrical shape is restricted by the size of the block of the adsorption element block 130. In particular, it is greatly restricted by the thickness of the adsorption element block 130 in the gas ventilation direction. By reducing the thickness of the adsorption element block 130, the adsorption rotor can be made smaller.

[0052] The bulk density of the activated carbon fiber nonwoven fabric 132a is preferably 50 kg / m 3 or more and 200 kg / m 3 or less. If the bulk density is less than 50 kg / m 3 , the compression ratio of the nonwoven fabric becomes high, and wrinkles are likely to occur during processing into the adsorption element block 130, making the processing difficult. If the bulk density exceeds 200 kg / m 3 , the pressure loss of the nonwoven fabric becomes high, and the gas cannot be ventilated sufficiently. From the balance between the processability into the adsorption element block 130 and the pressure loss, the bulk density is more preferably 60 kg / m 3 or more and 150 kg / m 3 or less.

[0053] The compression ratio of the activated carbon fiber nonwoven fabric 132a is preferably 30% or less, and more preferably 25% Following . If the compression ratio exceeds 30%, wrinkles are likely to occur during processing into the adsorption element block 130, making the processing difficult. The lower limit value of the compression ratio is usually 5% or more.

[0054] The compression elastic modulus of the activated carbon fiber nonwoven fabric 132a is preferably 80% or more, and more preferably 85% or more. If the compression elastic modulus is less than 80%, the activated carbon fiber nonwoven fabric will shift over time due to repeated ventilation or non-ventilation of the adsorption element block 130, or repeated alternate ventilation in the countercurrent direction, resulting in a short path of gas in the adsorption rotor and an early decrease in the adsorption efficiency for the substance to be treated. The upper limit value of the compression elastic modulus is usually 99% or less.

[0055] The adsorption element block 130 in the embodimentBased on the above-mentioned conditions, It is manufactured by the following method. The method for manufacturing the precursor nonwoven fabric of the activated carbon fiber nonwoven fabric 132a is not particularly limited, and known methods can be appropriately adopted. Examples of the method for manufacturing the nonwoven fabric include the spunbond method, the meltblown method, the spunlace method, the needle punch method, the thermal bond method, the chemical bond method, etc. Among these, the needle punch method is preferred.

[0056] The activated carbon fiber nonwoven fabric 132a can be manufactured by carbonizing the precursor nonwoven fabric by a known method and then activating it. Specifically, the gas activation method, the chemical activation method, etc. can be mentioned. From the viewpoint of improving fiber strength and purity, the gas activation method is preferred.

[0057] Alternatively, it is also possible to manufacture the activated carbon fiber nonwoven fabric 132a by processing activated carbon fibers into a sheet shape by the wet papermaking method using a binder.

[0058] Examples of the precursor fibers of the activated carbon fibers include phenolic resin, cellulose fiber, polyphenylene ether fiber, polyacrylonitrile, pitch, lignin, bamboo, etc. From the viewpoint of improving fiber strength, compression elastic modulus and purity, phenolic resin, cellulose fiber, polyphenylene ether fiber are preferred.

[0059] With reference to FIGS. 4 and 5, the specific configuration of the adsorption element block 130 in the present embodiment will be described. FIG. 4 is an overall perspective view of the adsorption element block 130, and FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 4.

[0060] The adsorption element block 130 has a rectangular housing 131. The housing 131 only needs to have sufficient strength, heat resistance, chemical resistance, etc. under the conditions of use. It is advisable to use metal materials such as iron, stainless steel, aluminum, and resin materials such as acrylic, bakelite, and melanin.

[0061] The housing 131 has an introduction opening 131a through which the fluid to be treated F1 flows in, and a discharge opening 131b through which the fluid to be treated F2 purified by the adsorption element block 130 flows out. The entire amount of the fluid to be treated F1 flowing in from the introduction opening 131a passes through the adsorption elements provided in the adsorption element block 130 and is discharged from the discharge opening 131b.

[0062] The adsorption element 132 is composed of a flat activated carbon fiber non-woven fabric. A plurality of adsorption elements 132 are stacked and arranged along the flow direction of the fluid to be treated F1. The adsorption element 132 is filled inside the rectangular parallelepiped housing 131 so as to be perpendicular to the ventilation direction.

[0063] In the embodiment, the adsorption element block 130 preferably has a toluene adsorption amount per internal volume of 12 to 70 kg / m 3 by When the toluene adsorption amount per internal volume is less than 12 kg / m 3 the number of blocks increases, and the adsorption rotor becomes large. When the toluene adsorption amount per internal volume exceeds 70 kg / m 3 to the filling amount of the activated carbon fiber increases, so the pressure loss increases and the gas cannot be ventilated sufficiently. From the balance between the miniaturization of the adsorption rotor and the pressure loss, the toluene adsorption amount per internal volume is preferably 14 kg / m 3 or more and 50 kg / m 3 or less.

[0064] Referring again to FIGS. 1 to 3, the adsorption treatment apparatus 100 further includes a first flow path forming member 2, an inner peripheral side flow path forming member 4, and an outer peripheral side flow path forming member 5.

[0065] One end of the first flow path forming member 2 is configured to maintain airtightness between the inside of the first flow path forming member 2 and the cylindrical hole 90a of the suction rotor 90, and to allow the suction rotor 90 to rotate around the cylindrical axis C. An annular seal member may be sandwiched between one end of the first flow path forming member 2 and the first hollow disk 11 at a portion located at the periphery of the opening 11a. The other end of the first flow path forming member 2 is drawn out outside the processing chamber 1.

[0066] The inner peripheral side flow path forming member 4 is disposed in the cylindrical hole 90a on the inner peripheral side of the suction rotor 90. The outer peripheral side flow path forming member 5 is disposed on the outer peripheral side of the suction rotor 90. The inner peripheral side flow path forming member 4 and the outer peripheral side flow path forming member 5 are disposed opposite to each other on the inner peripheral side and the outer peripheral side of the suction rotor 90 so as to sandwich a part of the suction rotor 90 in the circumferential direction.

[0067] The inner peripheral side flow path forming member 4 extends along the cylindrical hole 90a and is provided so as to extend outward from the opening 11a of the suction rotor 90. The inner peripheral side flow path forming member 4 includes a portion that extends along the cylindrical axis C direction through the opening 11a of the first hollow disk 11.

[0068] An inner peripheral side opening end portion 4a facing the inner peripheral surface of the suction rotor 90 is provided at one end of the inner peripheral side flow path forming member 4. The opening surface at the inner peripheral side opening end portion 4a is provided so as to face a part of the region of the inner peripheral surface of the suction rotor 90. The other end of the inner peripheral side flow path forming member 4 protrudes outside the first flow path forming member 2 from the opening 2a provided in the first flow path forming member 2.

[0069] An inner peripheral side curved surface 4b is provided at the edge of the inner peripheral side opening end portion 4a located on the downstream side in the rotation direction of the suction rotor 90. An inner peripheral side curved surface 4c is provided at the edge of the inner peripheral side opening end portion 4a located on the upstream side in the rotation direction of the suction rotor 90. The inner peripheral side curved surfaces 4b and 4c are curved along the rotation direction of the suction rotor 90.

[0070] One end of the outer peripheral side flow path forming member 5 is provided with an outer peripheral side opening end 5a facing the outer peripheral side of the adsorption rotor 90. The outer peripheral side opening end 5a is provided so as to face a partial region of the outer peripheral surface of the adsorption rotor 90. The other end of the outer peripheral side flow path forming member 5 protrudes outside the processing chamber 1.

[0071] An outer peripheral side curved surface 5b is provided at the edge of the outer peripheral side opening end 5a located on the downstream side in the rotation direction of the adsorption rotor 90. An outer peripheral side curved surface 5c is provided at the edge of the outer peripheral side opening end 5a located on the upstream side in the rotation direction of the adsorption rotor 90. The outer peripheral side curved surfaces 5b and 5c are curved along the rotation direction.

[0072] As shown in FIGS. 2 and 3, the adsorption rotor 90 includes a desorption region R1 and an adsorption region R2 partitioned in the circumferential direction. The plurality of adsorption element blocks 30 alternately move the desorption region R1 and the adsorption region R2 as the adsorption rotor 90 rotates around the cylindrical axis C.

[0073] As shown in FIG. 3, a plurality of space portions S that rotate with the rotation of the adsorption rotor 90 communicate with the inner peripheral side flow path forming member 4 and the outer peripheral side flow path forming member 5 in the desorption region R1. As the adsorption rotor 90 rotates, the inner seal member 41 slides with respect to the inner peripheral side curved surfaces 4b and 4c, and the outer seal member 42 slides with respect to the outer peripheral side curved surfaces 5b and 5c, so that some of the plurality of space portions S are airtightly communicated with the inner peripheral side flow path forming member 4 and the outer peripheral side flow path forming member 5.

[0074] Specifically, the space portion S located between the partition portion 20 located between the inner peripheral side curved surface 4b and the outer peripheral side curved surface 5b and the partition portion 20 located between the inner peripheral side curved surface 4c and the outer peripheral side curved surface 5c is airtightly communicated with the inner peripheral side flow path forming member 4 and the outer peripheral side flow path forming member 5.

[0075] The adsorption region R2 does not communicate with the inner peripheral side flow path forming member 4 and the outer peripheral side flow path forming member 5, and constitutes a flow path different from the desorption region R1.

[0076] As shown in FIG. 1, fluids are introduced into the detachment region R1 and the adsorption region R2, respectively. In the adsorption region R2, the fluid is introduced from the radially outer side to the inner side of the adsorption rotor 90. The fluid that has passed through the adsorption region R2 passes through the cylindrical hole 90a of the adsorption rotor 90 and flows out of the adsorption rotor 90 from the opening 11a of the first hollow disk 11. In the detachment region R1, the fluid that has passed through the inside of the inner peripheral side flow path forming member 4 passing through one of the openings 11a of the pair of hollow disks 10 is introduced from the radially inner side to the outer side of the adsorption rotor 90.

[0077] The fluid introduced into the adsorption region R2 is a fluid to be treated such as exhaust gas. The fluid to be treated contains an organic solvent as a substance to be treated. In the adsorption region R2, the fluid to be treated is purified.

[0078] The organic solvents contained in the substance to be treated in the embodiment include aldehydes such as formaldehyde, acetaldehyde, propionaldehyde, acrolein; ketones such as methyl ethyl ketone, diacetyl, methyl isobutyl ketone, acetone, cyclohexanone; esters such as 1,4-dioxane, 2-methyl-1,3-dioxolane, 1,3-dioxolane, tetrahydrofuran, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, ethyl butyrate, butyl butyrate; alcohols such as ethanol, n-propyl alcohol, isopropyl alcohol, butanol; glycols such as ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol; organic acids such as acetic acid, propionic acid; phenols; aromatic organic compounds such as toluene, xylene, benzene, ethylbenzene, mesitylene; cycloalkanes such as cyclohexane, methylcyclohexane, cyclopentane, cycloheptane; ethers such as diethyl ether, allyl glycidyl ether; glycol ethers such as propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate; nitriles such as acrylonitrile; chlorine-containing organic compounds such as dichloromethane, 1,2-dichloroethane, trichloroethylene, epichlorohydrin, 2-chloromethyl-1,3-dioxolane; organic compounds such as N-methyl-2-pyrrolidone, dimethylacetamide, N,N-dimethylformamide, etc. are given as an example.

[0079] As shown in FIG. 1, during purification, the fluid F1 to be treated supplied into the treatment chamber 1 is introduced from the outer peripheral surface of the adsorption rotor 90 into the adsorption region R2. When the fluid F1 to be treated introduced into the adsorption region R2 passes through the adsorption rotor 90 from the outer peripheral surface to the inner peripheral surface along the radial direction, the organic solvent is adsorbed by a plurality of adsorption element blocks 30 located in the adsorption region R2, thereby being purified.

[0080] The purified fluid to be treated is discharged from the adsorption region R2 into the cylindrical hole 90a of the adsorption rotor 90 as purified air F2. The purified air F2 passes through the cylindrical hole 90a and flows out from the opening 11a of the first hollow disk 11. The purified air F2 flowing out from the opening 11a is discharged outside the processing chamber 1 through the first flow path forming member 2.

[0081] A heating fluid F3 such as heated air is introduced into the desorption region R1. In the desorption region R1, the adsorbent element block 30 is regenerated by desorbing the substance to be treated such as the organic solvent adsorbed on the adsorbent element block 30, and a concentrated fluid with a high concentration of the organic solvent is generated.

[0082] In order to desorb the organic solvent, the heating fluid F3 is introduced from the inner peripheral side flow path forming member 4 into the desorption region R1. When the heating fluid F3 introduced into the desorption region R1 passes through the adsorption rotor 90, the organic solvent adsorbed on the plurality of adsorbent element blocks 30 located in the desorption region R1 is desorbed by heat. The heating fluid containing the organic solvent is discharged from the desorption region R1 into the outer peripheral side flow path forming member 5 as the concentrated fluid F4. The concentrated fluid F4 is discharged outside the processing chamber 1 and introduced into a post-treatment device where post-treatment such as recovery or combustion is performed.

[0083] In the adsorption treatment device 100, the adsorption treatment of the substance to be treated is performed on the adsorbent element block 30 located in the adsorption region R2, and the desorption treatment of the substance to be treated is performed on the adsorbent element block 30 located in the desorption region R1 after the adsorption treatment. As the adsorption rotor 90 rotates around the cylindrical axis C, the adsorbent element block 30 alternately moves between the desorption region R1 and the adsorption region R2, and the adsorption treatment and the desorption treatment of the substance to be treated are continuously performed.

[0084] The fluid to be treated F1 introduced into the adsorption region R2 is not limited to the exhaust gas containing an organic solvent. The heating fluid F3 introduced into the desorption region R1 is not limited to heated air. For example, the fluid introduced into the adsorption region R2 may be wastewater containing an organic solvent, and the fluid introduced into the desorption region R1 may be water vapor. When flowing such a liquid, the inner peripheral side flow path forming member 4, the outer peripheral side flow path forming member 5, and the desorption region R1 are configured to communicate with each other in a liquid-tight manner.

[0085] In the above-described embodiment, the case where the partition portion 20 has a substantially triangular prism shape has been illustrated and described. However, the present invention is not limited thereto, and as long as it has a strength capable of supporting the pair of hollow disks 10 and the seal member 40 can be installed, the shape may be a plate shape or the like, and can be appropriately changed.

[0086] In the above-described embodiment, the cylindrical hole 90a of the adsorption rotor 90 is opened only on one side in the axial direction of the adsorption rotor 90 (the direction in which the cylinder axis C extends) (upward in FIG. 1), and the clean air F2 purified by the adsorption rotor 90 flows upward in FIG. 1 and flows into the first flow path forming member 2. An example of the one-sided opening adsorption treatment apparatus 100 has been described. The adsorption treatment apparatus 100 of the embodiment may have a structure with both-sided openings in which the cylindrical hole 90a is opened on both sides in the axial direction of the adsorption rotor 90, and the clean air F2 flows out from the cylindrical hole 90a in both the upward and downward directions in FIG. 1.

[0087] The measurement methods of the various characteristics of the above-described adsorption element are as follows.

[0088] [Toluene adsorption rate q of adsorption element] An adsorption element dried at 120°C for 16 hours was placed in the U-tube for adsorption test of the adsorption test apparatus shown in FIG. 1 of JP-A-9-94422, the temperature was adjusted to 25°C, nitrogen containing 3,800 ppm of toluene was flowed for 60 minutes, and the weight increase of the adsorption element was measured. The toluene adsorption rate q was obtained by the following formula: [q (wt%) = w1 / w2 × 100]. Here, w1 is the increase in weight (g) of the adsorption element. w2 is the dry mass (g) of the adsorption element.

[0089] [Fiber diameter of activated carbon fiber] Using a scanning electron microscope (product name SU1510, manufactured by Hitachi High-Technologies Corporation), the microscopic image was observed, more than 100 fiber diameters were read from the microscopic image, and the average of the read fiber diameters was obtained. Note that the fiber diameter means the fiber diameter.

[0090] [Areal density of activated carbon fiber nonwoven fabric] After the activated carbon fiber nonwoven fabric was dried with hot air at 130°C for 3 hours, the weight per unit area was measured and obtained in g / m 2 .

[0091] [Bulk density of activated carbon fiber nonwoven fabric] The bulk density was obtained by dividing the areal density by the thickness, in kg / m 3 . Note that the thickness was measured using a thickness gauge with an area of 4 cm 2 while applying a load of 1.5 gf / cm 2 to the activated carbon fiber nonwoven fabric.

[0092] [Compression ratio and compression elastic modulus of activated carbon fiber nonwoven fabric] The thickness of the activated carbon fiber nonwoven fabric was measured with an initial load of 0.02 kPa. Next, after applying a load of 1.5 kPa for 1 minute, the thickness was measured while the load was applied. After leaving it for 1 minute without the load, the thickness was measured again with an initial load of 0.02 kPa. Using the obtained thickness values, the compression ratio (unit: %) and compression elastic modulus (unit: %) were calculated according to the calculation formula described in JIS L-1913 6.14.

[0093] [Pressure loss of adsorption element block] The adsorption element block was set in a ventilation pressure loss measuring jig, and the pressure loss when ventilating at a wind speed of 3.0 m / s with respect to the opening surface of the introduction opening 131a was measured and obtained in Pa.

[0094] [Example of combination treatment system] It is also possible to provide a treatment system including a pretreatment device that treats the treatment fluid before introducing it into the adsorption treatment device 100, and / or a post-treatment device that treats the desorbed gas discharged from the adsorption treatment device 100.

[0095] As pretreatment devices, there are a pre-adsorption unit equipped with a dust removal filter, adsorbents such as granular activated carbon, impregnated activated carbon, activated alumina, and zeolite for removing deteriorated components of the adsorption element, a scrubber for removing water-soluble components, a roll filter unit for removing paint mist, etc., a gas cooler and / or a gas heater for adjusting the temperature and humidity of the processing fluid, a gas cooler and / or a separator for pre-liquefying and recovering the processing fluid, a recovery device equipped with activated carbon for pre-liquefying and recovering the processing fluid, and the like.

[0096] As post-treatment devices, there are a combustion device (direct combustion, catalytic combustion, regenerative combustion, etc.) for burning the desorbed gas discharged from the adsorption treatment device 100, a gas cooler and / or a separator for liquefying and recovering the desorbed gas, a recovery device equipped with activated carbon for liquefying and recovering the desorbed gas, a buffer device filled with an adsorbent for leveling the concentration of the desorbed gas, and the like.

[0097] One or more of these pretreatment facilities and / or post-treatment facilities may be provided according to the processing conditions.

[0098] Hereinafter, as another embodiment, other configurations of the adsorption element block having the same performance as the adsorption element block 130 will be described.

[0099] [Embodiment 2: Adsorption Element Block 140] With reference to FIGS. 6 to 10, the adsorption element block 140 of the present embodiment will be described. FIG. 6 is an overall perspective view of the adsorption element block 140, FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 6, FIG. 8 is an overall perspective view of the first support 142a used in the adsorption element block 140, FIG. 9 is an overall perspective view of the second support 142b used in the adsorption element block 140, and FIG. 10 is a developed view of the activated carbon fiber nonwoven fabric 132a used in the adsorption element block 140.

[0100] The adsorption element block 140 in this embodiment has a housing 141 with the same structure as the housing 131 in the first embodiment above. It has an introduction opening 141a through which the fluid to be treated F1 flows in, and a discharge opening 141b through which the treated fluid F2 purified by the adsorption element block 140 flows out. The structure of the adsorption element 142 filled inside the housing 141 is different.

[0101] As shown in the cross-sectional structure diagram of FIG. 7, the adsorption element 142 in this embodiment is formed by laminating one or more belt-shaped activated carbon fiber non-woven fabrics 132a shown in FIG. 10 in a wave shape, and filling the inside of a rectangular parallelepiped housing 141 so that the plane formed by connecting the peaks of the waves is perpendicular to the ventilation direction. In this embodiment, five activated carbon fiber non-woven fabrics 132a are laminated.

[0102] Specifically, a first support 142a having a wave shape (pleat shape) formed of a wire mesh shown in FIG. 8 and a second support 142b having a wave shape (pleat shape) formed of a wire mesh shown in FIG. 9 are combined, and the activated carbon fiber non-woven fabric 132a is fixed between the combined wave shapes of the first support 142a and the second support 142b. Here, in this embodiment, the pitch (P) of the peaks of the wire meshes of the first support 142a and the second support 142b is, for example, 50 to 70 mm. Also, the thickness of the activated carbon fiber non-woven fabric 132a is, for example, about 15 to 25 mm.

[0103] The material of the mesh used for the first support 142a and the second support 142b only needs to have sufficient strength, heat resistance, chemical resistance, etc. under the conditions of use. It is advisable to use metal materials such as iron, stainless steel, aluminum, or resin materials such as acrylic, bakelite, and melanin.

[0104] According to the configuration of the adsorption element block 140 of the present embodiment, while securing a ventilation flow path, the activated carbon fiber nonwoven fabric 132a can be filled densely inside the housing 141. As a result, as shown by the arrow Y in FIG. 7, the fluid to be treated F1 flowing into the adsorption element block 140 from the introduction opening 141a will surely flow while intersecting the activated carbon fiber nonwoven fabric 132a.

[0105] Furthermore, in the conventional honeycomb configuration, the fluid flows in a parallel direction with respect to the surface of the adsorption element. On the other hand, in the present embodiment, the fluid surely flows while intersecting the activated carbon fiber nonwoven fabric 132a. Thereby, the contact efficiency between the fluid and the adsorption element is remarkably improved. As a result, the adsorption treatment ability when the fluid to be treated F1 is passed through can be further improved. Furthermore, the desorption treatment ability when the heating fluid F3 is passed through can be further improved.

[0106] [Embodiment 3: Adsorption Element Block 150] Next, with reference to FIGS. 11 to 13, the adsorption element block 150 of the present embodiment will be described. FIG. 11 is an overall perspective view of the adsorption element block 150 of the present embodiment, FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. 11, and FIG. 13 is an overall perspective view of the support 152a used for the adsorption element block 150.

[0107] The adsorption element block 150 of the present embodiment is largely different in the configuration of the support from the above-described adsorption element block 140. The configuration of the housing 151 is the same as that of each of the above embodiments, and has an introduction opening 151a into which the fluid to be treated F1 flows and a discharge opening 151b through which the fluid to be treated F2 purified by the adsorption element block 150 flows out.

[0108] As shown in the cross-sectional structure diagram of FIG. 12, the adsorption element 152 of the present embodiment is formed by laminating one or more sheets of the strip-shaped activated carbon fiber nonwoven fabric 132a shown in FIG. 10 in a wave shape, and filling the inside of the rectangular parallelepiped housing 151 so that the surface formed by connecting the peaks of the waves is perpendicular to the ventilation direction. In the present embodiment, five sheets of activated carbon fiber nonwoven fabric 132a are laminated. In the present embodiment, the outer surface of the laminated activated carbon fiber nonwoven fabric 132a is covered with a cotton protective nonwoven fabric 132b for protection.

[0109] Specifically, as shown in FIG. 13, the support 152a in the present embodiment has a plate shape in which the corrugated wire mesh 521 is sandwiched between two flat wire meshes 522. The overall thickness is about 5 to 25 mm.

[0110] As shown in FIG. 12, the support 152a is alternately arranged so as to sandwich it between the activated carbon fiber nonwoven fabrics 132a arranged in a wave shape. Here, in the present embodiment, the arrangement pitch (P) of the support 152a is, for example, 50 to 70 mm. Further, the thickness of the activated carbon fiber nonwoven fabric 132a is, for example, about 15 to 25 mm.

[0111] By adopting this configuration, similar to the adsorption element block 140 of the second embodiment, the activated carbon fiber nonwoven fabric 132a can be filled at a high density inside the housing 151 while securing the ventilation flow path. As a result, as shown by the arrow Y in FIG. 12, the fluid to be treated F1 flowing into the adsorption element block 150 from the introduction opening 151a will surely flow while intersecting the activated carbon fiber nonwoven fabric 132a.

[0112] According to this configuration, it is possible to suppress a decrease in the flow velocity of the fluid to be treated within the housing 151 (inside the pipe) such as in the conventional honeycomb configuration, particularly a decrease on the discharge opening 151b side, and enable the fluid to be treated F1 to pass through the activated carbon fiber nonwoven fabric 132a without decreasing the flow velocity of the fluid to be treated F1 in any region from the introduction opening 151a to the discharge opening 151b. As a result, it is possible to further improve the processing capacity of the fluid to be treated F1 by the adsorption element block 150. Note that the support 152a may be configured only with the corrugated wire mesh (pleated structure) 521 with a small pitch, eliminating the flat wire mesh 522.

[0113] [Embodiment 4: Adsorption unit 30H] The adsorption element block 30 can also be used as one unit. The case where the adsorption unit 30H is used as the adsorption unit in the present embodiment will be described with reference to FIGS. 14 and 15. FIG. 14 is an overall perspective view of the adsorption unit 30H, and FIG. 15 is a partial cross-sectional view taken along the line XV-XV in FIG. 14.

[0114] The adsorption unit 30H includes a rectangular housing 53 and an adsorption element block 600. The housing 53 has an introduction opening 31a through which the fluid to be treated F1 flows in, and a discharge opening 31b through which the fluid to be treated F2 purified by the adsorption element block 600 flows out. The entire amount of the fluid to be treated F1 flowing in from the introduction opening 31a passes through the activated carbon fiber nonwoven fabric 200c, which is an adsorption element provided within the adsorption element block 600, and is discharged from the discharge opening 31b.

[0115] The housing 53 has a generally box-shaped form as a whole so as to form the introduction opening 31a and the discharge opening 31b. Flanges 34 bent inward are provided at the introduction opening 31a and the discharge opening 31b of a pair of side plates 33 located on the left and right. Flanges 32 bent inward are also provided on the entire circumference of the lid members 31 arranged vertically. By providing the flanges 32 and the flanges 34, it is possible to prevent the adsorption element block 600 from protruding from the housing 53.

[0116] As shown in Fig. 14, the adsorption element block 600 is stacked in three layers. A partition body 35 is arranged between the stacked adsorption element blocks 600. The partition body 35 is provided so as to reach from the inflow-side opening to the discharge-side opening, and divides the stacked adsorption element blocks 600. By arranging the partition body 35, contact and rubbing between the adsorption element blocks 600 can be suppressed. Furthermore, since the partition body 35 can also hold the adsorption element blocks 600, the structural stability of the stacked adsorption element blocks 600 can be increased.

[0117] The number of stacked adsorption element blocks 600 and the number of partition bodies 35 can be appropriately changed according to the strength and performance required for the adsorption unit 30H. However, depending on the number of stacked adsorption element blocks 600, it is preferable to provide the partition body 35 so that the whole is divided into about 2 to 5 parts.

[0118] When stacking the adsorption element blocks 600 during the assembly of the adsorption unit 30H, or when cleaning and replacing the adsorption element blocks 600 after the assembly of the adsorption unit 30H, the housing 53 preferably has a structure that can be divided. In the case of joining using welding, it is difficult to divide once the adsorption unit 30H is assembled. In the case of screwing and bolting, it can be easily disassembled. However, it is necessary to secure the volume of the screws and bolts, resulting in a wasteful thickness.

[0119] Therefore, it is preferable to use a rivet 37 as a fastening member that can be easily disassembled and requires only a small volume to be secured. The members fixed by the rivet 37 are provided with through holes in advance. When there is no problem even if the volume becomes large, screws, bolts, etc. may be used as the fastening member. In the figure, in order to clarify the attachment position of the rivet 37, it is shown with a ratio different from the actual size.

[0120] In order to increase the opening area of the housing 53, it is preferable that the material used for the housing 53 is thin, but it is also necessary to maintain the strength as a structure. It may be appropriately set in consideration of these. The housing 53, the partition body 35, and the rivet 37 only need to have sufficient strength, heat resistance, chemical resistance, etc. under the conditions of use. It is advisable to use metal materials such as iron, stainless steel, and aluminum, or resin materials such as acrylic, bakelite, and melanin.

[0121] As shown in the cross-sectional structure diagram of FIG. 15, the adsorption element block 600 of the present embodiment is formed by laminating one or more belt-shaped activated carbon fiber non-woven fabrics 200c in a wave shape, and the surface formed by connecting the peaks of the waves is perpendicular to the ventilation direction. It is filled inside the rectangular parallelepiped housing 53. In the present embodiment, five activated carbon fiber non-woven fabrics 200c are laminated. In the present embodiment, the outer surface of the laminated activated carbon fiber non-woven fabric 200c is covered with a cotton protective non-woven fabric 200d for protection.

[0122] The support 400a in the present embodiment has a plate shape in which a corrugated wire mesh 401 is sandwiched between two flat wire meshes 402. The overall thickness is about 5 to 25 mm. As shown in FIG. 15, the supports 400a are alternately arranged so as to be sandwiched between the activated carbon fiber non-woven fabrics 200c arranged in a wave shape. Here, in the present embodiment, the arrangement pitch (P) of the supports 400a is, for example, 50 to 70 mm. Also, the thickness of the activated carbon fiber non-woven fabric 200c is, for example, about 15 to 25 mm.

[0123] By adopting this configuration, while ensuring the ventilation flow path, the activated carbon fiber non-woven fabric 200c can be filled densely inside the housing 53. As a result, as shown by the arrow Y in FIG. 15, the fluid to be treated F1 flowing into the adsorption unit 30H from the introduction opening 31a flows while intersecting the activated carbon fiber non-woven fabric 200c.

[0124] According to this configuration, it is possible to suppress a decrease in the flow velocity of the fluid to be treated in the housing (inside the pipe) such as the conventional honeycomb configuration, particularly a decrease on the discharge opening 31b side, and allow the fluid to be treated F1 to pass through the activated carbon fiber nonwoven fabric 200c without decreasing the flow velocity of the fluid to be treated F1 in any region from the introduction opening 31a to the discharge opening 31b. As a result, it is possible to further improve the treatment capacity of the fluid to be treated F1 by the adsorption unit 30H. Note that the support 400a may be composed only of the corrugated wire mesh (pleated structure) 401 with a small pitch, eliminating the flat wire mesh 402.

[0125] As shown in the cross-sectional structure diagram of FIG. 15, in the adsorption element block 600 in the upper part of the present embodiment, the upper end portion 200e of the activated carbon fiber nonwoven fabric 200c is sandwiched between the lid member 31 and the support 400a, and the lower end portion 200f of the activated carbon fiber nonwoven fabric 200c is sandwiched between the partition member 35 and the support 400a.

[0126] In the adsorption element block 600 in the central part, the upper end portion 200e of the activated carbon fiber nonwoven fabric 200c is sandwiched between the partition member 35 and the support 400a, and the lower end portion 200f of the activated carbon fiber nonwoven fabric 200c is sandwiched between the partition member 35 and the support 400a. In the adsorption element block 600 in the lower part, the upper end portion 200e of the activated carbon fiber nonwoven fabric 200c is sandwiched between the partition member 35 and the support 400a, and the lower end portion 200f of the activated carbon fiber nonwoven fabric 200c is sandwiched between the lid member 31 and the support 400a.

[0127] The adsorption unit 30H can preferably sandwich the activated carbon fiber nonwoven fabric 200c between the lid member 31, the partition member 35, and the support 400a so that displacement or the like does not occur.

[0128] According to the adsorption unit of the present disclosure, the fluid to be treated can be processed with high performance. Furthermore, the adsorption unit of the present disclosure can be used for the above-described adsorption rotor, adsorption treatment device, and treatment system. According to the adsorption rotor, adsorption treatment device, and treatment system of the present disclosure, by using the adsorption unit of the present disclosure, the fluid to be treated can be processed with higher performance.

[0129] The configuration of the activated carbon fiber nonwoven fabric 200c is the same as that of the above-described activated carbon fiber nonwoven fabric 132a. Hereinafter, as another embodiment, other configurations of an adsorption unit having the same performance as the above-described adsorption unit 30H will be described.

[0130] [Embodiment 5: Adsorption Unit 30I] With reference to FIGS. 16 and 17, an adsorption unit 30I having another configuration will be described. FIG. 16 is an overall perspective view showing the adsorption unit 30I, and FIG. 17 is a partial cross-sectional view taken along the line XVII-XVII in FIG. 16.

[0131] This adsorption unit 30I has the same basic configuration as the adsorption unit 30H shown in FIG. 14. The difference lies in the positional relationship between the upper adsorption element block 710 and the lower adsorption element block 720 disposed inside the housing 54.

[0132] In the upper adsorption element block 710 of the present embodiment, as shown in the cross-sectional structure diagram of FIG. 17, the upper end portion 200e of the activated carbon fiber nonwoven fabric 200c is sandwiched between the lid member 31 and the support 400a, and the lower end portion 200f of the activated carbon fiber nonwoven fabric 200c is sandwiched between the partition member 35 and the support 400a.

[0133] In the lower adsorption element block 720 of the present embodiment, the upper end portion 200e of the activated carbon fiber nonwoven fabric 200c is sandwiched between the partition member 35 and the support 400a, and the lower end portion 200f of the activated carbon fiber nonwoven fabric 200c is sandwiched between the lid member 31 and the support 400a.

[0134] The adsorption element block 710 in the upper part and the adsorption element block 720 in the lower part occupy positions in the height direction at a ratio of approximately 1:2 with respect to the housing 54, as shown in FIG. 17. The adsorption element block 710 in the upper part and the adsorption element block 720 in the lower part are partitioned by a partition body 35. The end of the partition body 35 is bent in an L shape and fixed to the side plate 33 by a rivet 37.

[0135] [Embodiment 6: Adsorption unit 30J] Referring to FIG. 18, the adsorption unit 30J with another configuration will be described. FIG. 18 is an overall perspective view showing the adsorption unit 30J.

[0136] This adsorption unit 30J has the same basic configuration as the adsorption unit 30H shown in FIG. 14. The difference is that a vertical partition body 36 is arranged inside the housing 55. In the adsorption unit 30J, the activated carbon fiber non-woven fabric 200c is arranged on the left and right sides of the vertical partition body 36.

[0137] In the adsorption unit 30J, each of the regions surrounded by the horizontal partition body 35 and the vertical partition body 36 can function as one adsorption element block. The material of the partition body 36, similar to the partition body 35, only needs to have sufficient strength, heat resistance, chemical resistance, etc. under the conditions of use, and metal materials such as iron, stainless steel, and aluminum, or resin materials such as acrylic, bakelite, and melanin can be used.

[0138] A plurality of vertical partition bodies 36 may be provided in one housing. The number of the horizontal partition body 35 and the vertical partition body 36 used can be appropriately changed according to the size of the housing.

[0139] It should be considered that all the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims are included.

Explanation of reference numerals

[0140] 1 Processing chamber, 2 First flow path forming member, 3 Motor, 4 Inner peripheral side flow path forming member, 4a Inner peripheral side opening end, 4b, 4c Inner peripheral side curved surfaces, 5 Outer peripheral side flow path forming member, 5a Outer peripheral side opening end, 5b, 5c Outer peripheral side curved surfaces, 6 Support member, 10 Hollow disk, 11 First hollow disk, 12 Second hollow disk, 20 Partition portion, 21 Main body portion, 22 Seal portion, 23 Inner peripheral side seal portion, 23a, 24a Seal surfaces, 24 Outer peripheral side seal portion, 40 Seal member, 41 Inner side seal member, 42 Outer side seal member, 90 Suction rotor, 90a Cylindrical hole, 100 Suction processing device, 130, 140, 150 Suction element blocks, 131, 141, 151 Housings, 131a, 141a, 151a Introduction openings, 131b, 141b, 151b Discharge openings, 132, 142, 152 Suction elements, 132a Activated carbon fiber non-woven fabric, 132b Protective non-woven fabric, 142a First support, 142b Second support, 152a Support, 521 Corrugated wire mesh, 522 Plain wire mesh.

Claims

1. An adsorption element block filled with an adsorption element through which gas can pass, within a rectangular parallelepiped-shaped housing having an introduction opening and a discharge opening, wherein the housing is configured such that all of the gas introduced from the introduction opening is discharged from the discharge opening after passing through the adsorption element, the adsorption element includes activated carbon fiber nonwoven fabric, The activated carbon fiber nonwoven fabric has a total basis weight of 600 to 6000 g / m ２ , a toluene adsorption rate of 25 to 75 wt.%, and a fiber diameter of 15 to 120 μm, and the adsorption element is formed in a strip shape and is disposed within the housing while being supported by a corrugated support formed of wire meshes on both sides of the strip, an adsorption element block in which a plane formed by connecting the peaks of the corrugations is located at the introduction opening of the rectangular parallelepiped-shaped housing and is perpendicular to the ventilation direction of the gas.

2. The adsorption element block according to claim 1, wherein the adsorption element is arranged such that the gas flows while intersecting.

3. The activated carbon fiber nonwoven fabric has a bulk density of 50 to 200 kg / m ３ , a compression ratio of 30% or less, and a compression elastic modulus of 80% or more. The adsorption element block according to claim 1 or claim 2.

4. The activated carbon fiber nonwoven fabric is mainly composed of at least one or more of phenolic resin fiber, cellulose fiber, and polyphenylene ether fiber as a precursor, the adsorption element block according to any one of claims 1 to 3.

5. The adsorption element block according to any one of claims 1 to 4, wherein a plurality of the adsorption elements are stacked and arranged within the housing.

6. The adsorption element block according to any one of claims 1 to 4, wherein one adsorption element is folded and arranged in a stacked state within the housing.

7. The adsorption element block according to any one of claims 1 to 6, wherein the pressure loss is 1000 Pa or less and the thickness in the gas flow direction is 500 mm or less.

8. The adsorption element block has a toluene adsorption amount (kg) per internal volume (m ３ ), which is 12 to 70 kg / m ３ . The adsorption element block according to any one of claims 1 to 7

9. A hollow cylindrical adsorption rotor that rotates around a cylinder axis, including a plurality of adsorption element blocks filled with an adsorption element through which gas can pass, and a plurality of partition portions through which gas cannot pass, wherein the adsorption element blocks and the partition portions are alternately arranged in the circumferential direction around the cylinder axis, and the adsorption element block is the adsorption element block according to any one of claims 1 to 8, an adsorption rotor.

10. An adsorption treatment apparatus comprising the adsorption rotor according to claim 9 and a flow path forming member that forms a flow path for gas passing through the adsorption element block provided in the adsorption rotor.

11. The adsorption treatment apparatus according to claim 10, wherein the flow path forming member allows a gas to pass in the radial direction around the cylinder axis, the gas being a gas to be treated containing an organic solvent or a heating gas for desorbing the organic solvent from the adsorption element, to the adsorption element block located at a set rotation phase in the rotation of the adsorption rotor.

12. The adsorption treatment apparatus according to claim 10 or claim 11, A treatment system including a pretreatment apparatus that treats a fluid to be treated before introducing the fluid to be treated into the adsorption treatment apparatus and / or a post-treatment apparatus that treats a desorption gas discharged from the adsorption treatment apparatus.

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