VOC removal device

Abstract

Provided is a VOC removal device that can remove VOCs adsorbed onto a VOC adsorption rotor with high energy efficiency.　This VOC removal device comprises: a VOC adsorption rotor 10 that includes a honeycomb structure 1 carrying an adsorbent for adsorbing VOCs; a pair of electrodes 20a, 20b that are disposed on both outer sides of the VOC adsorption rotor 10 in an extension direction of a rotational axis 11, and are disposed at positions contacting the honeycomb structure 1, on the VOC adsorption rotor 10; and a voltage application device 30 capable of applying a voltage to the pair of electrodes 20a, 20b. The honeycomb structure 1 is made of metal. The pair of electrodes 20a, 20b are provided in a desorption zone Z2 among an adsorption zone Z1 for causing a to-be-treated gas to be transmitted therethrough and adsorbing VOCs contained in the to-be-treated gas, the desorption zone Z2 for desorbing the VOCs adsorbed in the adsorption zone Z1, and a cooling zone Z3 for cooling the honeycomb structure 1, said zones being provided on the VOC adsorption rotor 10.

Description

[Technical Field]

[0001] The present invention relates to a VOC removal device that removes VOCs contained in a gas to be treated. [Background technology]

[0002] Conventionally, a VOC removal device equipped with a honeycomb-type VOC adsorption rotor that adsorbs volatile organic compounds (VOCs) has been known (see Patent Document 1). Conventional VOC adsorption rotors use ceramic or glass as a substrate, and carry an adsorbent that adsorbs VOCs.

[0003] The VOC adsorption rotor is provided with an adsorption zone that adsorbs VOCs contained in the gas to be treated, a desorption zone that desorbs the VOCs adsorbed in the adsorption zone by passing heated gas through it, and a cooling zone that cools the VOC adsorption rotor heated in the desorption zone. In other words, during one rotation of the VOC adsorption rotor, VOCs are adsorbed in the adsorption zone, desorbed in the desorption zone, and cooled in the cooling zone. Then, VOCs are adsorbed again in the adsorption zone. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-77969 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional VOC removal devices heat the gas and pass the heated gas through the desorption zone to desorb the VOCs adsorbed in the adsorption zone of the VOC adsorption rotor, so the energy efficiency for desorbing VOCs cannot be said to be high and there is room for improvement.

[0006] The present invention is intended to solve the above-mentioned problems, and aims to provide a VOC removal device that can remove VOCs adsorbed on a VOC adsorption rotor with high energy efficiency. [Means for solving the problem]

[0007] The VOC removal device of the present invention is a VOC adsorption rotor having a honeycomb structure supporting an adsorbent for adsorbing VOCs; a pair of electrodes disposed on both outer sides of the VOC adsorption rotor in the extension direction of the rotation axis of the VOC adsorption rotor and positioned so as to be in contact with the honeycomb structure; a voltage application device capable of applying a voltage to the pair of electrodes; Equipped with The honeycomb structure is made of metal, The pair of electrodes is characterized by being arranged in the desorption zone of the VOC adsorption rotor, which is provided with an adsorption zone through which the gas to be treated is passed to adsorb the VOCs contained in the gas to be treated, a desorption zone for desorbing the VOCs adsorbed in the adsorption zone, and a cooling zone for cooling the honeycomb structure. [Effects of the Invention]

[0008] According to the VOC removal device of the present invention, when a voltage is applied to a pair of electrodes arranged in the desorption zone by a voltage application device, a current flows through the honeycomb structure of the VOC adsorption rotor made of metal, generating Joule heat. This makes it possible to directly heat the honeycomb structure in the desorption zone, enabling adsorbed VOCs to be desorbed with high energy efficiency. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view schematically illustrating the configuration of a VOC removal device according to one embodiment. [Figure 2]FIG. 2 is a plan view schematically showing the configuration of the VOC adsorption rotor when viewed in the extending direction of the rotation axis. [Figure 3] FIG. 2(a) is a diagram showing a first microscopic shape reproduction model which is a model of a honeycomb structure, and FIG. 2(b) is a diagram showing a first uniform equivalent property model corresponding to the first microscopic shape reproduction model. [Figure 4] FIG. 2(a) is a diagram showing a second microscopic shape reproduction model which is a model of a honeycomb structure, and FIG. 2(b) is a diagram showing a second uniform equivalent property model corresponding to the second microscopic shape reproduction model. [Figure 5] Graph (a) shows the normalized conductivity in the X-axis direction and the normalized conductivity in the Y-axis direction versus (2Lb / La), and graph (b) shows the same graph as graph (a) except that the vertical axis is a logarithmic axis. [Figure 6] FIG. 1(a) is a diagram showing the simulation results of the temperature distribution when the first uniform equivalent property model is used, and FIG. 1(b) is a diagram showing the simulation results of the temperature distribution when the second uniform equivalent property model is used. DETAILED DESCRIPTION OF THE INVENTION

[0010] The features of the present invention will be specifically described below by showing embodiments of the present invention.

[0011] 1 is a perspective view schematically illustrating the configuration of a VOC removal device 100 according to one embodiment. The VOC removal device 100 according to one embodiment includes a VOC adsorption rotor 10, a pair of electrodes 20a and 20b, and a voltage application device 30. As shown in FIG. 1, the VOC removal device 100 may further include a first air blower 41, a second air blower 42, a third air blower 43, and a heating device 44.

[0012] FIG. 2 is a plan view schematically showing the configuration of the VOC adsorption rotor 10 when viewed in the direction in which the rotating shaft 11 extends (hereinafter, sometimes referred to as the rotation axis direction). Note that FIG. 2 also shows an electrode 20a, which will be described later. The VOC adsorption rotor 10 is configured to be rotatable around the rotating shaft 11 using a motor or other driving source. The diameter of the VOC adsorption rotor 10 is, for example, 500 mm or more and 2000 mm or less, and the dimension in the direction in which the rotating shaft 11 extends is, for example, 200 mm or more and 800 mm or less.

[0013] The VOC adsorption rotor 10 includes a honeycomb structure 1 that supports an adsorbent for adsorbing VOCs. The honeycomb structure 1 is made of a metal such as stainless steel. However, the metal that constitutes the honeycomb structure 1 is not limited to stainless steel. The VOC adsorption rotor 10 may be entirely made of metal, or a portion other than the honeycomb structure 1 may be made of a material other than metal.

[0014] The shape of the plurality of cells 2 constituting the honeycomb structure 1 can be any shape. In the example shown in Fig. 2, the shape of the cells 2 when viewed in the extension direction of the rotation axis 11 is triangular. However, the shape of the cells 2 when viewed in the rotation axis direction may be other shapes such as hexagonal or rectangular.

[0015] The adsorbent supported on the honeycomb structure 1 may be any material capable of adsorbing VOCs contained in the gas to be treated, and examples of such materials include zeolite, activated carbon, and silica. The gas to be treated is, for example, a gas containing VOCs generated by processes such as cleaning, printing, painting, and drying in a factory. The present invention is not limited by the type of VOCs to be removed or the type of adsorbent.

[0016] A catalyst for decomposing VOCs may be supported on the honeycomb structure 1. For example, platinum, palladium, or the like can be used as the catalyst for decomposing VOCs.

[0017] 1 and 2, the VOC adsorption rotor 10 is provided with an adsorption zone Z1, a desorption zone Z2, and a cooling zone Z3 along the rotation direction. The range of the adsorption zone Z1 in the rotation direction is, for example, from 230° to 270°, the range of the desorption zone Z2 is, for example, from 30° to 60°, and the range of the cooling zone Z3 is, for example, from 30° to 60°.

[0018] The adsorption zone Z1 is a region through which the gas to be treated passes to adsorb VOCs contained in the gas to be treated. In this embodiment, the gas to be treated is blown by a first blower 41. The desorption zone Z2 is a region through which the VOCs adsorbed in the adsorption zone Z1 are desorbed. To desorb the VOCs, heated gas is passed through the desorption zone Z2. In this embodiment, the gas blown by the second blower 42 is heated by a heating device 44 such as a heater, and then sent to the desorption zone Z2. The cooling zone Z3 is a region for cooling the honeycomb structure 1 heated in the desorption zone Z2. In this embodiment, the gas for cooling the honeycomb structure 1 is blown to the cooling zone Z3 by a third blower 43.

[0019] The gas from which VOCs have been removed by passing through the adsorption zone Z1 may be returned to the source of the gas to be treated. Also, the gas warmed by passing through the cooling zone Z3 may be used as the gas to be passed through the desorption zone Z2.

[0020] 2, when the VOC adsorption rotor 10 rotates counterclockwise, the cells 2 located in the adsorption zone Z1 move sequentially to the desorption zone Z2 and the cooling zone Z3, and then return to the adsorption zone Z1. The honeycomb structure 1 is cooled in the cooling zone Z3, which enables it to adsorb VOCs again in the adsorption zone Z1.

[0021] That is, as the VOC adsorption rotor 10 rotates, the VOCs contained in the gas to be treated are repeatedly adsorbed and desorbed. If a catalyst for decomposing VOCs is supported on the honeycomb structure 1, a VOC decomposition reaction occurs in the desorption zone Z2. However, since the decomposition of VOCs can be considered to result in the desorption of adsorbed VOCs, the decomposition of VOCs is considered to be included in the desorption of VOCs. The rotation speed of the VOC adsorption rotor 10 is, for example, 8.4 rph or more and 11.0 rph or less.

[0022] The pair of electrodes 20a, 20b are arranged on both outer sides of the VOC adsorption rotor 10 in the extension direction of the rotation shaft 11 of the VOC adsorption rotor 10, in positions where they are in contact with the VOC adsorption rotor 10. The pair of electrodes 20a, 20b are preferably arranged in opposite positions in the extension direction of the rotation shaft 11. Of the adsorption zone Z1, desorption zone Z2, and cooling zone Z3 provided in the VOC adsorption rotor 10, the pair of electrodes 20a, 20b are arranged in the desorption zone Z2. More specifically, as shown in Figures 1 and 2, the pair of electrodes 20a, 20b are arranged in a position in the desorption zone Z2 close to the adsorption zone Z1.

[0023] The pair of electrodes 20a, 20b are made of, for example, graphite, but the material of the pair of electrodes 20a, 20b is not limited to graphite, and metals such as copper may also be used.

[0024] In this embodiment, the pair of electrodes 20a, 20b each have a shape that extends in the radial direction of the VOC adsorption rotor 10. Because the pair of electrodes 20a, 20b have a shape that extends in the radial direction, when a voltage is applied to the pair of electrodes 20a, 20b by a voltage application device 30 described later, a wide area in the radial direction of the honeycomb structure 1 can be heated. In addition, as shown in Figures 1 and 2, because the pair of electrodes 20a, 20b have an elongated shape, they do not hinder the heated gas when it passes through the desorption zone Z2.

[0025] However, the shape of the pair of electrodes 20a, 20b is not limited to the shapes shown in Figures 1 and 2. For example, the pair of electrodes 20a, 20b may be roller-shaped, with the surface that comes into contact with the VOC adsorption rotor 10 being the rotating surface.

[0026] As described above, the pair of electrodes 20a, 20b are positioned so as to come into contact with the VOC adsorption rotor 10. Therefore, as the VOC adsorption rotor 10 rotates, it maintains contact with the pair of electrodes 20a, 20b while rubbing against them.

[0027] The voltage application device 30 is capable of applying a voltage to the pair of electrodes 20a, 20b. The voltage application device 30 applies a voltage to the pair of electrodes 20a, 20b so that the output is, for example, 2 kW or more and 10 kW or less.

[0028] In the VOC removal device 100 of this embodiment, when the VOC adsorption rotor 10 rotates and repeatedly adsorbs and desorbs VOCs contained in the gas to be treated, a voltage is applied to the pair of electrodes 20a, 20b by the voltage application device 30. As described above, since the honeycomb structure 1 is made of metal, applying a voltage to the pair of electrodes 20a, 20b causes a current to flow in the honeycomb structure 1, generating Joule heat. This causes the temperature of the honeycomb structure 1 to rise.

[0029] That is, by applying a voltage to the pair of electrodes 20a, 20b, it is possible to directly heat the honeycomb structure 1, thereby reducing the amount of energy required to desorb VOCs in the desorption zone Z2. Therefore, the VOC removal device 100 of this embodiment has better heating efficiency and can desorb VOCs adsorbed on the VOC adsorption rotor 10 with high energy efficiency, compared to conventional VOC removal devices that desorb VOCs adsorbed on the honeycomb structure 1 simply by passing heated gas through the desorption zone Z2. For example, in order to desorb VOCs adsorbed in the adsorption zone Z1, it is possible to lower the heating temperature of the gas passing through the desorption zone Z2, compared to the above-mentioned conventional VOC adsorption rotor.

[0030] The portion of the honeycomb structure 1 that is heated by applying a voltage to the pair of electrodes 20a, 20b moves toward the cooling zone Z3 due to the rotation of the VOC adsorption rotor 10. As shown in Figures 1 and 2, by arranging the pair of electrodes 20a, 20b in a position close to the adsorption zone Z1, it becomes possible to directly heat the honeycomb structure 1 at an early stage in the desorption zone Z2, thereby enabling effective desorption of VOCs.

[0031] Here, the shape of the cells 2 constituting the honeycomb structure 1 was changed, and the conductivity of the honeycomb structure 1 was investigated by simulation. Here, two types of models were created as honeycomb structures 1 having different shapes of the cells 2: a first microscopic shape reproduction model 21 shown in FIG. 3(a) and a second microscopic shape reproduction model 23 shown in FIG. 4(a). In addition, for use in the simulation, a first uniform equivalent property model 22 (FIG. 3(b)) corresponding to the first microscopic shape reproduction model 21 and a second uniform equivalent property model 24 (FIG. 4(b)) corresponding to the second microscopic shape reproduction model 23 were created.

[0032] The X-axis direction, Y-axis direction, and Z-axis direction of the first uniform equivalent property model 22 shown in Figure 3(b) and the second uniform equivalent property model 24 shown in Figure 4(b) correspond to the circumferential direction, radial direction, and rotational axis direction of the VOC adsorption rotor 10, respectively.

[0033] The dimension La of the cell 2 in the circumferential direction of the first microscopic shape reproduction model 21 shown in FIG. 3(a) is 3.3 mm, the dimension Lb in the radial direction is 2.0 mm, the dimension Ld (not shown) in the rotation axis direction is 0.05 mm, and the electrical conductivity σ of the honeycomb structure 1 is 1 / (142×10 8 ) S / m, and the resistances in the X-axis, Y-axis and Z-axis directions of the first microscopic shape reproduction model 21 and the first uniform equivalent physical property model 22 when the dimension in the Z-axis direction of the first uniform equivalent physical property model 22 is 0.1 mm are shown in Table 1.

[0034] [Table 1]

[0035] As shown in Table 1, the resistance in the X-axis direction of the first uniform equivalent physical property model 22 has an error of 10% or less compared to the resistance in the X-axis direction of the first microscopic shape reproduction model 21. Similarly, the resistance in the Y-axis direction and the Z-axis direction of the first uniform equivalent physical property model 22 has an error of 10% or less compared to the resistance in the Y-axis direction and the Z-axis direction of the first microscopic shape reproduction model 21. Therefore, when performing a simulation, it is possible to use the first uniform equivalent physical property model 22, which is a simplified model, instead of the first microscopic shape reproduction model 21.

[0036] In the second microscopic shape reproduction model 23 shown in FIG. 4(a), the dimension La in the circumferential direction of the cell 2 is 1.0 mm, the dimension Lb in the radial direction is 10.0 mm, the dimension Ld (not shown) in the rotation axis direction is 0.05 mm, and the conductivity σ of the honeycomb structure 1 is 1 / (142×10 8 ) S / m, and the resistances in the X-axis, Y-axis and Z-axis directions of the second microscopic shape reproduction model 23 and the second uniform equivalent physical property model 24 when the dimension in the Z-axis direction of the second uniform equivalent physical property model 24 is 0.1 mm are shown in Table 2.

[0037] [Table 2]

[0038] As shown in Table 2, the resistance in the X-axis direction of the second uniform equivalent physical property model 24 has an error of 10% or less compared to the resistance in the X-axis direction of the second microscopic shape reproduction model 23. Similarly, the resistance in the Y-axis direction and the Z-axis direction of the second uniform equivalent physical property model 24 has an error of 10% or less compared to the resistance in the Y-axis direction and the Z-axis direction of the second microscopic shape reproduction model 23. Therefore, when performing a simulation, it is possible to use the second uniform equivalent physical property model 24, which is a simplified model, instead of the second microscopic shape reproduction model 23.

[0039] In the first uniform equivalent property model 22 and the second uniform equivalent property model 24, the conductivity in the X-axis direction, the conductivity in the Y-axis direction, and the conductivity in the Z-axis direction are expressed by the following equations (1) to (3). Conductivity in the X-axis direction = Ld / Lb × σ[1 + 1 / √(1 + (2Lb / La) 2 )] (1) Conductivity in the Y-axis direction = Ld / Lb × σ × (2Lb / La) / √(1 + (La / 2Lb) 2 ) (2) Conductivity in the Z-axis direction = Ld / Lb × σ[1 + √(1 + (2Lb / La) 2 )] (3) The conductivity in the Y-axis direction can also be expressed by the following equation (4). Conductivity in the Y-axis direction = Ld / Lb × σ × (2Lb / La) / [√(1+(La / 2Lb) 2 )+La / 2Lb] (4)

[0040] When the conductivity in the X-axis direction and the conductivity in the Y-axis direction are normalized such that the conductivity in the Z-axis direction is set to 1, the normalized conductivity in the X-axis direction and the normalized conductivity in the Y-axis direction each depend only on (2Lb / La).

[0041] FIG. 5(a) is a graph showing the normalized conductivity in the X-axis direction and the normalized conductivity in the Y-axis direction versus (2Lb / La). FIG. 5(b) is a graph similar to FIG. 5(a) except that the vertical axis is a logarithmic axis. Note that in FIGS. 5(a) and 5(b), the horizontal axis is a logarithmic axis. In FIGS. 5(a) and 5(b), "X-axis direction" refers to the normalized conductivity in the X-axis direction, "Y-axis direction" refers to the normalized conductivity in the Y-axis direction, and "Z-axis direction" refers to the normalized conductivity in the Z-axis direction.

[0042] 5(a) and (b), the conductivity in the X-axis direction and the conductivity in the Y-axis direction are equal to or less than the conductivity in the Z-axis direction. Furthermore, the conductivity in the X-axis direction and the conductivity in the Y-axis direction are in a trade-off relationship, so that decreasing one conductivity increases the other conductivity.

[0043] When a voltage is applied to the pair of electrodes 20a, 20b in the desorption zone Z2, the amount of heat generated in the radial direction of the VOC adsorption rotor 10 can be adjusted by adjusting the size of the pair of electrodes 20a, 20b. In other words, by using a pair of electrodes 20a, 20b with a longer radial dimension, the amount of heat generated in the radial direction can be increased. Therefore, if the amount of heat generated in the circumferential direction of the VOC adsorption rotor 10, which is the direction of rotation, is large when a voltage is applied to the pair of electrodes 20a, 20b, the adsorbed VOCs can be effectively desorbed in the desorption zone Z2. In order to increase the amount of heat generated in the circumferential direction of the VOC adsorption rotor 10, the electrical conductivity in the circumferential direction (X-axis direction) can be reduced. This can be achieved by increasing (2Lb / La), as shown in FIGS. 5(a) and 5(b). If (2Lb / La) is 4 or greater, the electrical conductivity in the X-axis direction (corresponding to the circumferential direction) is smaller than the electrical conductivity in the Y-axis direction (corresponding to the radial direction). Therefore, it is preferable that (2Lb / La) is 4 or greater, i.e., Lb / La is 2 or greater. Furthermore, when (2Lb / La) is 6 or more, the conductivity in the X-axis direction corresponding to the circumferential direction becomes smaller, so it is more preferable that Lb / La is 3 or more.

[0044] Figure 6 shows the results of a simulation of the temperature distribution of the honeycomb structure 1 when a voltage is applied to a pair of electrodes 20a, 20b in contact with the VOC adsorption rotor 10, as shown in Figure 1, where (a) shows the temperature distribution when the first uniform equivalent property model 22 is used, and (b) shows the temperature distribution when the second uniform equivalent property model 24 is used.

[0045] Here, as shown in FIG. 6(c), four block bodies 25 using the first uniform equivalent property model 22 or the second uniform equivalent property model 24 were stacked vertically and horizontally, and the temperature distribution was investigated when a voltage was applied to a pair of electrodes 26a, 26b arranged opposite each other in the Z-axis direction for the four block bodies 25. The block body 25 shown in FIGS. 6(a) and 6(b) is the block body 25 located at the bottom right of the four block bodies 25 shown in FIG. 6(c). In the temperature distributions shown in FIGS. 6(a) and 6(b), the darker the color, the higher the temperature. That is, the black area has a higher temperature than the white area.

[0046] 6(a) and 6(b), when the second uniform equivalent property model 24 is used, the high temperature region is wider than when the first uniform equivalent property model 22 is used, and the temperature in the X-axis direction corresponding to the circumferential direction is higher over a wider range. In other words, in order to more effectively desorb adsorbed VOCs, the second fine shape reproduction model 23 (FIG. 4(a)), whose Lb / La is 10, is more preferable than the first fine shape reproduction model 21 (FIG. 3(a)), whose Lb / La is approximately 0.6.

[0047] The above-mentioned simulation is for the case where the shape of cell 2 when viewed in the extension direction of rotation axis 11 is triangular, but the same applies when the shape of cell 2 is hexagonal or rectangular, and it is preferable that Lb / La is 2 or more, and more preferably Lb / La is 3 or more.

[0048] The present invention is not limited to the above-described embodiment, and various applications and modifications can be made within the scope of the present invention. For example, in the above-described embodiment, the pair of electrodes 20a, 20b arranged in the desorption zone Z2 is described as one set, but multiple sets may be arranged and voltage may be applied to the multiple sets of electrodes. In this case, it becomes possible to heat a wide area of ​​the honeycomb structure 1 in the desorption zone Z2 at one time.

[0049] In the above-described embodiment, the honeycomb structure 1 is cooled in the cooling zone Z3 by passing a gas for cooling the honeycomb structure 1 through the cooling zone Z3, but the honeycomb structure 1 may also be cooled in the cooling zone Z3 by another method.

[0050] The VOC removal device in this application is as follows. <1> a VOC adsorption rotor having a honeycomb structure supporting an adsorbent for adsorbing VOCs; a pair of electrodes disposed on both outer sides of the VOC adsorption rotor in the extension direction of the rotation axis of the VOC adsorption rotor and positioned so as to be in contact with the VOC adsorption rotor; a voltage application device capable of applying a voltage to the pair of electrodes; Equipped with The honeycomb structure is made of metal, A VOC removal device characterized in that the pair of electrodes are arranged in the desorption zone of the VOC adsorption rotor, which is provided with an adsorption zone through which the gas to be treated is passed to adsorb the VOCs contained in the gas to be treated, a desorption zone for desorbing the VOCs adsorbed in the adsorption zone, and a cooling zone for cooling the honeycomb structure. <2> Each of the pair of electrodes has a shape that extends in the radial direction of the VOC adsorption rotor. <1> The VOC removal device described in <3> The VOC adsorption rotor is characterized in that, when the circumferential dimension of the cells constituting the honeycomb structure is La and the radial dimension is Lb, Lb / La is 2 or more. <1> or <2> The VOC removal device described in <4> The VOC adsorption rotor is characterized in that, when the circumferential dimension of the cells constituting the honeycomb structure is La and the radial dimension is Lb, Lb / La is 3 or more. <1> or <2> The VOC removal device described in <5> The shape of the cells is triangular when viewed in the direction of the rotation axis of the VOC adsorption rotor. <1> ~ <4> 1. A VOC removal device according to any one of the preceding claims. <6> The metal is stainless steel. <1> ~ <5> 1. A VOC removal device according to any one of the preceding claims. [Explanation of symbols]

[0051] 1 Honeycomb structure 2 cells 10 VOC adsorption rotors 11 Rotation axis 20a, 20b Pair of electrodes 21 First microstructure reproduction model 22 First homogeneous equivalent property model 23 Second fine shape reproduction model 24 Second homogeneous equivalent property model 25 Block Letters 26a, 26b Pair of electrodes 30 Voltage application device 41 First blower 42 Second blower 43 Third air blower 44 Heating device 100 VOC removal equipment Z1 adsorption zone Z2 Desorption Zone Z3 Cooling Zone

Claims

1. a VOC adsorption rotor having a honeycomb structure supporting an adsorbent for adsorbing VOCs; a pair of electrodes disposed on both outer sides of the VOC adsorption rotor in the extending direction of the rotation axis of the VOC adsorption rotor and disposed at positions in contact with the VOC adsorption rotor; a voltage application device capable of applying a voltage to the pair of electrodes; Equipped with The honeycomb structure is made of metal, A VOC removal device characterized in that the pair of electrodes are arranged in the desorption zone of the VOC adsorption rotor, which is provided with an adsorption zone for passing the gas to be treated through to adsorb the VOCs contained in the gas to be treated, a desorption zone for desorbing the VOCs adsorbed in the adsorption zone, and a cooling zone for cooling the honeycomb structure.

2. 2. The VOC removal device according to claim 1, wherein each of the pair of electrodes has a shape extending in a radial direction of the VOC adsorption rotor.

3. A VOC removal device as described in claim 1 or claim 2, characterized in that when the circumferential dimension of the cells constituting the honeycomb structure of the VOC adsorption rotor is La and the radial dimension is Lb, Lb / La is 2 or more.

4. A VOC removal device as described in claim 1 or claim 2, characterized in that when the circumferential dimension of the cells constituting the honeycomb structure of the VOC adsorption rotor is La and the radial dimension is Lb, Lb / La is 3 or more.

5. 3. The VOC removal device according to claim 1, wherein the shape of the cells constituting the honeycomb structure is triangular when viewed in the extending direction of the rotation axis of the VOC adsorption rotor.

6. 3. The VOC removal device according to claim 1, wherein the metal is stainless steel.

Images