Adsorption rotor and adsorption recovery device

Abstract

This prevents gas leakage between the adsorption area, desorption area, and cooling area of ​​the adsorption rotor. [Solution] An adsorption rotor comprising a structure having a permeable gap on which an adsorbent is supported, and which rotates in the rotational direction about an axis, comprising: an adsorption region through which a gas containing a volatile substance to be adsorbed is passed and the substance to be adsorbed onto the structure; a desorption region located downstream of the adsorption region in the rotational direction, through which a desorption gas is passed and the substance to be adsorbed onto the structure is desorbed; a cooling region located downstream of the desorption region in the rotational direction, through which a regenerating gas is passed and the structure is cooled; a first isolation region provided between the adsorption region and the desorption region, through which an inert gas is passed; and a second isolation region provided between the cooling region and the adsorption region, through which an inert gas is passed.

Description

Technical Field

[0001] The present disclosure relates to an adsorption recovery device that adsorbs and recovers volatile adsorbed substances by an adsorption rotor composed of a structure having a ventilation gap carrying an adsorbent, and an adsorption rotor attached thereto.

Background Art

[0002] Patent Documents 1 and 2 disclose a technique for safely and highly concentratingly recovering volatile organic compounds, and continuously separating and recovering organic compounds while preventing pressure fluctuations in the gas treatment system. Patent Document 3 discloses a gas treatment device that does not require high-precision processing or adjustment of a sealing material, and can suppress gas mixing inside and outside the rotor even when the processing air volume and the regeneration air volume are variably controlled.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] In an adsorption recovery device that adsorbs and recovers volatile adsorbed substances by an adsorption rotor composed of a structure having a ventilation gap carrying an adsorbent, and provided with an adsorption region, a desorption region, and a cooling region along the rotation direction, an object is to prevent mutual gas leakage and mixing between the adsorption region, the desorption region, and the cooling region.

Means for Solving the Problems

[0005] One aspect of the present disclosure is an adsorption rotor comprising a structure having a permeable gap on which an adsorbent is supported, and which rotates in a rotational direction about an axis, comprising: an adsorption region through which a gas containing a volatile substance to be adsorbed is passed and the substance to be adsorbed onto the structure; a desorption region disposed downstream of the adsorption region in the rotational direction, through which a desorption gas is passed and the substance to be adsorbed onto the structure is desorbed; a cooling region disposed downstream of the desorption region in the rotational direction, through which a regeneration gas is passed and the structure is cooled; a first isolation region provided between the adsorption region and the desorption region, through which an inert gas is passed; and a second isolation region provided between the cooling region and the adsorption region, through which an inert gas is passed.

[0006] According to this embodiment, in the adsorption rotor, a first isolation region is interposed between the adsorption region and the desorption region, and a second isolation region is interposed between the adsorption region and the cooling region, thereby preventing mutual gas leakage and mixing between the adsorption region and the desorption region, and between the adsorption region and the cooling region. [Effects of the Invention]

[0007] According to this disclosure, in an adsorption recovery device that adsorbs and recovers volatile adsorbed substances using an adsorption rotor composed of a structure having a ventilated gap on which an adsorbent is supported, and which has an adsorption region, a desorption region and a cooling region along the direction of rotation, it is possible to prevent mutual gas leakage and mixing between the adsorption region, the desorption region and the cooling region. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram showing the general configuration of the adsorption recovery device of the first embodiment. [Figure 2] This is a schematic diagram showing the pressures on the upstream and downstream sides of the flow path for each region in the adsorption recovery device of the first embodiment. [Figure 3] Block diagram showing the hardware configuration of the control unit. [Figure 4] The flow of inert gas in the adsorption recovery apparatus shown in Figure 1 is schematically illustrated. [Figure 5] The flow of inert gas in the adsorption recovery apparatus shown in Figure 1 is schematically illustrated. [Figure 6] This is a schematic diagram showing the general configuration of the adsorption recovery device of the second embodiment. [Figure 7] This is a schematic diagram showing the general configuration of the adsorption recovery device of the third embodiment. [Modes for carrying out the invention]

[0009] Hereinafter, an example of an embodiment for carrying out the technology of this disclosure will be described in detail with reference to the drawings. Components and processes that perform similar operations, functions, and roles will be given the same reference numerals throughout the drawings, and redundant explanations may be omitted as appropriate. Each drawing is only a schematic representation to the extent that the technology of this disclosure can be fully understood. Therefore, the technology of this disclosure is not limited to the illustrated examples. Furthermore, in this embodiment, explanations of configurations not directly related to the technology of this disclosure or well-known configurations may be omitted.

[0010] (1) First Embodiment Figure 1 is a schematic diagram showing the general configuration of the adsorption recovery device 1 of the first embodiment. The adsorption recovery device 1 of this embodiment is composed of a structure having aeration gaps on which an adsorbent is carried, and includes an adsorption rotor 10 that rotates around an axis 11. The adsorption rotor 10 passes through the adsorption region 12, which occupies the largest portion, the first isolation region 15, the desorption region 13, the cooling region 14, and the second isolation region 16 along the rotation direction indicated by the arrow in the figure.

[0011] In the adsorption region 12, a gas containing a volatile adsorbent is passed through the adsorption channel 20 from the upstream side 21 to the downstream side 22 by the adsorption fan 21b, causing the adsorbent to be adsorbed onto the adsorption rotor 10. In Figure 1, the adsorption fan 21b is located on the upstream side 21 of the adsorption channel 20, but it may also be located on the downstream side 22, or on both the upstream side 21 and the downstream side 22. Examples of volatile adsorbent substances include organic solvents used or generated in the manufacturing or processing steps of a product. The gas containing this volatile adsorbent contains oxygen from the atmosphere of the manufacturing or processing step. In the adsorption region 12, the adsorption rotor 10 is at a relatively low temperature due to cooling in the cooling region 14, which will be described later, making it easier for the adsorbent to be adsorbed.

[0012] In the desorption region 13, located downstream of the adsorption region 12 in the direction of rotation, heated desorption gas is passed through the desorption channel 30 from the upstream side 31 to the downstream side 32, thereby desorbing the adsorbed substance from the adsorption rotor 10. An inert gas such as nitrogen is preferable as the desorption gas.

[0013] In the cooling region 14 located downstream of the desorption region 13 in the direction of rotation, cooled regenerated gas is passed through the cooling channel 40 from the upstream side 41 to the downstream side 42, thereby cooling the structure and regenerating the adsorption rotor 10 to a state where it can once again adsorb adsorbed substances. An inert gas such as nitrogen is preferable as the regenerated gas.

[0014] The desorption channel 30 communicates with the downstream side 42 of the cooling channel 40 via a heater 80 located on the upstream side 31, and also communicates with the upstream side 41 of the cooling channel 40 via a cooler 90 located on the downstream side 32. That is, the adsorbed substance contained in the high-temperature desorption gas that desorbs from the adsorption rotor 10 and flows out from the downstream side 32 of the desorption channel 30 is cooled by the cooler 90, condenses into a liquid, and is recovered. The desorption gas from which the adsorbed substance has been removed becomes a cooled, low-temperature regenerated gas and flows into the cooling region 14 from the upstream side 41 of the cooling channel 40 by a cooling fan 41b. The regenerated gas that has cooled the cooling region 14 flows out from the downstream side 42 of the cooling channel 40, is heated by the heater 80 located on the upstream side 31 of the desorption channel 30 to become a high-temperature desorption gas again, and flows into the desorption region 13 to be used for desorption of the adsorbed substance from the adsorption rotor 10.

[0015] A first isolation region 15 is provided between the adsorption region 12 and the desorption region 13, through which an inert gas is passed from the upstream side 51 to the downstream side 52 of the first isolation channel 50. Nitrogen is preferably used as the inert gas. In this case, oxygen that has flowed into the adsorption region 12 from the manufacturing or processing process of the product is present, and this oxygen attempts to flow into the desorption region 13 through the ventilation gap of the structure, but before that, it reaches the first isolation region 15 located between the adsorption region 12 and the desorption region 13, and is discharged to the downstream side 52 of the first isolation channel 50. This prevents the inflow of oxygen from the adsorption region 12 to the desorption region 13, thereby reducing the risk of inducing an explosion due to the presence of oxygen even when the concentration of the adsorbed substance becomes high on the downstream side 32 of the desorption channel 30.

[0016] A second isolation region 16 is provided between the cooling region 14 and the adsorption region 12, through which an inert gas is passed from the upstream side 61 to the downstream side 62 of the second isolation channel 60. Nitrogen is preferably used as the inert gas. In this case, oxygen that has flowed into the adsorption region 12 from the manufacturing or processing process of the product is present, and this oxygen attempts to flow into the cooling region 14 through the ventilation gap of the structure, but before that, it reaches the second isolation region 16 located between the cooling region 14 and the adsorption region 12, and is discharged to the downstream side 62 of the second isolation channel 60. This prevents the inflow of oxygen from the adsorption region 12 into the cooling region 14, thereby preventing the mixing of oxygen into the upstream side 31 of the desorption channel 30 via the downstream side 42 of the cooling channel 40, and reducing the risk of inducing an explosion due to the presence of oxygen even when the concentration of the adsorbed substance becomes high on the downstream side 32 of the desorption channel 30. Furthermore, this prevents a decrease in processing efficiency caused by the leakage of adsorbed material that could not be recovered by the cooler 90 from the desorption channel 30 to the adsorption region 12 via the cooling region 14, and then to the downstream side 22 of the adsorption channel 20.

[0017] On one side of the adsorption rotor 10 (the left side in Figure 1), the upstream side 21 of the adsorption channel 20, the downstream side 32 of the desorption channel 30, the upstream side 41 of the cooling channel 40, the downstream side 52 of the first isolation channel 50, and the downstream side 62 of the second isolation channel 60 are located. On the other side of the adsorption rotor (the right side in Figure 1), the downstream side 22 of the adsorption channel 20, the upstream side 31 of the desorption channel 30, the downstream side 42 of the cooling channel 40, the upstream side 51 of the first isolation channel 50, and the upstream side 61 of the second isolation channel 60 are located.

[0018] As described above, the adsorption rotor 10 used in this embodiment is composed of a structure having a ventilated gap on which an adsorbent is carried, and rotates in the rotational direction about the axis 11, and includes an adsorption region 12 through which a gas containing a volatile substance to be adsorbed is passed and the substance to be adsorbed is adsorbed onto the structure, a desorption region 13 located downstream of the adsorption region 12 in the rotational direction and through which a desorption gas is passed and the substance to be adsorbed onto the structure is desorbed, a cooling region 14 located downstream of the desorption region 13 in the rotational direction and through which a regeneration gas is passed and the structure is cooled, a first isolation region 15 provided between the adsorption region 12 and the desorption region 13 and through which an inert gas is passed, and a second isolation region 16 provided between the cooling region 14 and the adsorption region 12 and through which an inert gas is passed.

[0019] Furthermore, the adsorption recovery device 1 of this embodiment includes the adsorption rotor 10 described above, and a gas containing a volatile adsorbed substance is passed through the adsorption region 12 from one side to the other of the adsorption rotor 10, the desorption gas is passed through the desorption region 13 from the other side to the one side, and the regeneration gas is passed through the cooling region 14 from one side to the other.

[0020] Furthermore, in the adsorption recovery device 1 described above, the inert gas is passed through the first isolation region 15 from the other side to the one side, and the inert gas is passed through the second isolation region 16 from the other side to the one side.

[0021] Figure 2 is a schematic diagram showing the upstream and downstream pressures of the flow path for each region in the adsorption recovery device 1 of this embodiment. As shown in this figure, in the adsorption flow path 20, the pressure on the upstream side 21 relative to the adsorption region 12 is P 21 The pressure on the downstream side 22 is set to P 22 In addition, in the detachment channel 30, the pressure on the upstream side 31 relative to the detachment region 13 is set to P 31 The pressure on the downstream side 32 is set to P 32 Furthermore, in the cooling channel 40, the pressure on the upstream side 41 relative to the cooling region 14 is set to P 41 The pressure on the downstream side 42 is set to P 42Let it be so. Also, in the first isolation flow path 50, let the pressure on the upstream side 51 with respect to the first isolation region 15 be P 51 and the pressure on the downstream side 52 be P 52 Let it be so. Further, in the second isolation flow path 60, let the pressure on the upstream side 61 with respect to the second isolation region 16 be P 61 and the pressure on the downstream side 62 be P 62 Let it be so.

[0022] And the adsorption recovery device 1 of the present embodiment has the above pressures such that P 51 > P 21 , P 51 > P 22 , P 52 > P 21 , P 52 > P 22 , P 61 < P 42 , P 61 < P 22 , P 62 < P 41 , and P 62 < P 21 It is provided with a control unit 100 (see FIG. 1) that adjusts the pressures of the adsorption flow path 20, the cooling flow path 40, the first isolation flow path 50, and the second isolation flow path 60. Details of the control unit 100 will be described later.

[0023] That is, by P 51 > P 21 , P 51 > P 22 , P 52 > P 21 , and P 52 > P 22 being so, it is possible to prevent the gas containing oxygen from leaking from the adsorption region 12 to the desorption region 13 by the first isolation region 15.

[0024] Also, by P 61 < P 42 , and P 62 < P 41 being so, gas leaks from the cooling region 14 toward the second isolation region 16. Also, by P 61 < P 22 , and P 62 < P 21As a result, the oxygen-containing gas leaks from the adsorption region 12 to the second isolation region 16. Consequently, the second isolation region 16 can prevent the oxygen-containing gas from leaking from the adsorption region 12 to the cooling region 14 via the second isolation region 16, and also prevent the gas containing the adsorbed substance from leaking from the cooling region 14 to the adsorption region 12.

[0025] In other words, the adsorption recovery device 1 described above is provided with a control unit 100 that controls the pressure in the first isolation region 15 to be higher than the pressure in the adsorption region 12, and the pressure in the second isolation region 16 to be lower than the pressures in the cooling region 14 and the adsorption region 12.

[0026] Furthermore, as shown in Figure 1, the adsorption recovery apparatus 1 of this embodiment includes an inert gas supply source 70 for supplying inert gas, a first supply passage 71 connecting the inert gas supply source 70 and the upstream side 51 of the first isolation passage 50, a first supply valve 71a which is a valve provided in the middle of the first supply passage 71, a second supply passage 75 which connects the inert gas supply source 70 and the upstream side 61 of the second isolation passage 60, a second supply valve 75a which is a valve provided in the middle of the second supply passage 75, a first recirculation passage 53 which connects the downstream side 52 of the first isolation passage 50 and the upstream side 21 of the adsorption passage 20, a first recirculation valve 53a which is a valve provided in the middle of the first recirculation passage 53, a first replenishment passage 54 which connects the downstream side 52 of the first isolation passage 50 and the upstream side 41 of the cooling passage 40, and in the middle of the first replenishment passage 54 The system further includes a first replenishment valve 54a, a second recirculation channel 63 connecting the downstream side 62 of the second isolation channel 60 and the upstream side 21 of the adsorption channel 20, a second recirculation valve 63a located in the middle of the second recirculation channel 63, a second replenishment passage 64 connecting the downstream side 62 of the second isolation channel 60 and the upstream side 41 of the cooling channel 40, a second replenishment valve 64a located in the middle of the second replenishment passage 64, a first recovery passage 43 connecting the downstream side 42 of the cooling channel 40 and the upstream side 51 of the first isolation channel 50, a first recovery valve 43a located in the middle of the first recovery passage 43, a second recovery passage 44 connecting the downstream side 42 of the cooling channel 40 and the upstream side 61 of the second isolation channel 60, and a second recovery valve 44a located in the middle of the second recovery passage 44.

[0027] As shown in the hardware configuration of Figure 3, the control unit 100 includes a CPU (Central Processing Unit) 110, a ROM (Read Only Memory) 120, a RAM (Random Access Memory) 130, and a storage device 150. Each component is connected to the others via a bus 190 so that they can communicate with each other.

[0028] The CPU 110 is the central processing unit, and it executes various programs that can be implemented as installed applications, as well as controlling various parts. Specifically, the CPU 110 reads programs from the ROM 120 or storage device 150 and executes them using the RAM 130 as the working area. The CPU 110 opens and closes each valve according to the program recorded in the ROM 120 or storage device 150.

[0029] ROM 120 stores various programs and data. RAM 130 temporarily stores programs or data as a working area. Storage device 150 is configured as storage using an HDD (Hard Disk Drive), SSD (Solid State Drive), or flash memory, and stores various programs including the operating system, and various data.

[0030] Then, the control unit 100 has the P described above. 21 , P 22 , P 41 , P 42 , P 51 , P 52 , P 61 and P 62To achieve the relative sizes, the hatched first supply valve 71a, first replenishment valve 54a, second return valve 63a, and second recovery valve 44a (collectively referred to as the "first valve group") are opened and closed synchronously in the diagram. Similarly, the blacked-out second supply valve 75a, first return valve 53a, second replenishment valve 64a, and first recovery valve 43a (collectively referred to as the "second valve group") are opened and closed synchronously in the diagram. Note that in the case of the first valve group and the second valve group, one may be open while the other is closed, or both may be open.

[0031] Furthermore, the adsorption recovery device 1 of this embodiment is also provided with an adsorption inlet valve 21a that opens and closes the upstream side 21 of the adsorption channel 20, an adsorption outlet valve 22a that opens and closes the downstream side 22 of the adsorption channel, an adsorption outlet valve 52a that opens and closes the downstream side 52 of the first isolation channel 50, a second isolation outlet valve 62a that opens and closes the downstream side 62 of the second isolation channel 60, a first bypass valve 73a that opens and closes the first bypass circuit 73 which is a bypass from the first supply channel 71 to the downstream side 52 of the first isolation channel 50, and a second bypass valve 77a that opens and closes the second bypass circuit 77 which is a bypass from the second supply channel 75 to the downstream side 62 of the second isolation channel 60. Each of these valves is opened and closed as appropriate to fill each channel with inert gas and to adjust the pressure in each channel.

[0032] For example, the pressure P on the downstream side 22 of the adsorption channel 20 22 To lower the pressure, one possible action is to open the adsorption outlet valve 22a and reduce the operating speed of the adsorption blower fan 21b. Also, the pressure P on the upstream side 51 of the first isolation channel 50 51 If you want to lower the pressure P on the downstream side 52, 52 If you want to increase the pressure, or if you want to fill the downstream side 52 with inert gas, the first bypass valve 73a of the first bypass 73 is opened. Furthermore, the pressure P on the upstream side 61 of the second isolation passage 60 61 If you want to lower the pressure P on the downstream side 62, 62 If you want to increase the pressure, or if you want to fill the downstream side 62 with inert gas, the second bypass valve 77a of the second bypass circuit 77 is opened.

[0033] Figure 4 is a schematic diagram showing the flow of inert gas with the first valve group (hatched valves in the figure) closed and the second valve group (black-filled valves in the figure) open. Figure 5 is a schematic diagram showing the flow of inert gas with the first valve group open and the second valve group closed. In Figures 4 and 5, among the white-outlined valves, those with a straight line drawn along the flow path indicate an open valve, while those with a straight line drawn perpendicular to the flow path indicate a closed valve.

[0034] The valve opening and closing states shown in Figure 4 are mainly performed when filling each flow path with inert gas during the startup of the adsorption recovery device 1. Here, the inert gas passes through the flow paths shown by the thick lines. The inert gas from the inert gas supply source 70 goes from the second supply path 75 via the open second supply valve 75a to the upstream side 61 of the second isolation flow path 60, and then through the second isolation area 16 to the downstream side 62. The inert gas then goes from the second replenishment path 64 via the open second replenishment valve 64a to the upstream side 41 of the cooling flow path 40, and then through the cooling area 14 to the downstream side 42.

[0035] The inert gas flows from the downstream side 42 of the cooling region 14 along the branching flow path to the desorption flow path 30 and the first isolation flow path 50. The inert gas that reaches the desorption flow path 30 is heated by the heater 80 on the upstream side 31, then passes through the desorption region 13 to the downstream side 32, and then returns to the upstream side 41 of the cooling region 14. Meanwhile, the inert gas that reaches the first isolation flow path 50 passes through the open first recovery valve 43a from the upstream side 51, through the first isolation region 15 to the downstream side 52, and then passes through the open first recirculation valve 53a from the first recirculation flow path 53 to the upstream side 21 of the adsorption flow path 20.

[0036] In the state shown in Figure 4, the flow paths circulating through the desorption channel 30 passing through the desorption region 13 and the cooling channel 40 passing through the cooling region 14 are filled with inert gas.

[0037] The valve opening and closing states shown in Figure 5 are mainly performed when the adsorption recovery device 1 is operating with each flow path filled with inert gas. Here, the inert gas passes through the flow paths indicated by the thick lines. In the state shown in this figure, the adsorption inlet valve 21a on the upstream side 21 of the adsorption flow path 20 is open, and gas containing volatile adsorbed substances flows into the adsorption flow path 20 from the product manufacturing or processing process. The inert gas from the inert gas supply source 70 travels through the open first supply valve 71a to the upstream side 51 of the first isolation flow path 50, and then through the first isolation area 15 to the downstream side 52. The inert gas then travels through the open first replenishment valve 54a to the upstream side 41 of the cooling flow path 40, and then through the cooling area 14 to the downstream side 42.

[0038] The inert gas flows from the downstream side 42 of the cooling channel 40 along the branching channels to the desorption channel 30 and the second isolation channel 60. The inert gas that reaches the desorption channel 30 is heated by the heater 80 on the upstream side 31, then passes through the desorption region 13, containing the adsorbed substance, and reaches the downstream side 32. There it is cooled by the cooler 90, the adsorbed substance is adsorbed and removed, and in a cooled state it reaches the upstream side 41 of the cooling region 14 again, regenerating the structure of the adsorption rotor 10. Meanwhile, the inert gas that reaches the second isolation channel 60 passes through the open second recovery valve 44a from the upstream side 61 through the second isolation region 16 to the downstream side 62, and then passes through the open second recirculation valve 63a from the second recirculation channel 63 to the upstream side 21 of the adsorption channel 20, where it merges with a gas containing volatile adsorbed substances, and while passing through the adsorption region 12, adsorbs the adsorbed substance onto the adsorption rotor 10, before reaching the downstream side 22.

[0039] In the state shown in Figure 5, the pressure P is located upstream 51 of the first isolation channel 50, which is the most upstream of the inert gas supply source 70. 51 and the pressure P on the downstream side 52 52 (See Figure 2) By relatively increasing the pressure P on the upstream side 61 of the second isolation channel 60, which is located further downstream of one of the channels that branch off from the downstream side 42 of the cooling channel 40 located on the downstream side, 61 and the pressure P on the downstream side 62 62(See Figure 2) is set to the lowest possible value. This prevents the oxygen-containing gas from leaking from the adsorption region 12 to the desorption region 13, which can be prevented by the first isolation region 15. Also, P 61 <P 42 , and, P 62 <P 41 As a result, gas leaks from the cooling region 14 to the second isolation region 16, P 61 <P 22 , and, P 62 <P 21 As a result, the oxygen-containing gas leaks from the adsorption region 12 to the second isolation region 16. Consequently, the second isolation region 16 can prevent the oxygen-containing gas from leaking from the adsorption region 12 to the cooling region 14 via the second isolation region 16, and also prevent the gas containing the adsorbed substance from leaking from the cooling region 14 to the adsorption region 12.

[0040] Here, as described above, the desorption channel 30 and the cooling channel 40 form a recirculating channel, but since inert gas flows into this recirculating channel via the first replenishment channel 54, the amount of inert gas in the recirculating channel decreases, and the pressure P on the upstream side 31 of the desorption channel 30 decreases. 31 and the pressure P on the downstream side 32 32 , and the pressure P on the upstream side 41 of the cooling channel 40 41 and the downstream pressure P 42 (See Figure 2) will not decrease. Furthermore, if the pressure balance in each flow path is about to be disrupted, it is possible to appropriately switch the open / closed state of each valve to refill each flow path with inert gas as needed and adjust the pressure.

[0041] As described above, the adsorption recovery device 1 of this embodiment comprises an adsorption rotor 10 made of a structure having aeration gaps on which an adsorbent is carried and which rotates in the rotational direction about its axis; an adsorption region 12 in the adsorption rotor 10 where a gas containing a volatile substance to be adsorbed is passed through an adsorption channel 20 and the substance to be adsorbed is adsorbed; a desorption region 13 located downstream of the adsorption region 12 in the rotational direction and where the adsorbed substance to be adsorbed is desorbed by a heated desorption gas passed through a desorption channel 30; a cooling region 14 located downstream of the desorption region 13 in the rotational direction and where the structure is cooled by a cooled regenerated gas passed through a cooling channel 40; a first isolation region 15 provided between the adsorption region 12 and the desorption region 13 and through which an inert gas is passed through a first isolation channel 50; and a second isolation region 16 provided between the cooling region 14 and the adsorption region 12 and through which an inert gas is passed through a second isolation channel 60.

[0042] Furthermore, the adsorption recovery device 1 of this embodiment further includes a cooler 90 for cooling the adsorbed substance contained in the desorption gas that has passed through the desorption region 13, and a heater 80 for heating the regenerated gas that has passed through the cooling region 14.

[0043] Furthermore, in the adsorption recovery apparatus 1 of this embodiment, the regenerated gas cooled by the cooler 90 is supplied to the cooling region 14, and the desorption gas heated by the heater 80 is supplied to the desorption region 13.

[0044] Furthermore, in the adsorption recovery apparatus 1 of this embodiment, there is an inert gas supply source 70 for supplying the inert gas, a first supply passage 71 connecting the inert gas supply source 70 and the upstream side of the first isolation passage 50, a first supply valve 71a provided in the middle of the first supply passage 71, a second supply passage 75 connecting the inert gas supply source 70 and the upstream side of the second isolation passage 60, a second supply valve 75a provided in the middle of the second supply passage 75, a first recirculation passage 53 connecting the downstream side of the first isolation passage 50 and the upstream side of the adsorption passage 20, a first recirculation valve 53a provided in the middle of the first recirculation passage 53, a first replenishment passage 54 connecting the downstream side of the first isolation passage 50 and the upstream side of the cooling passage 40, a first replenishment valve 54a provided in the middle of the first replenishment passage 54, and a second recirculation passage 6 connecting the downstream side of the second isolation passage 60 and the upstream side of the adsorption passage 20 3, a second recirculation valve 63a provided in the middle of the second recirculation passage 63, a second replenishment passage 64 connecting the downstream side of the second isolation passage 60 and the upstream side of the cooling passage 40, a second replenishment valve 64a provided in the middle of the second replenishment passage 64, a first recovery passage 43 connecting the downstream side of the cooling passage 40 and the upstream side of the first isolation passage 50, a first recovery valve 43a provided in the middle of the first recovery passage 43, and the downstream side of the cooling passage 40 The system further includes a second recovery passage 44 that connects the system to the upstream side of the second isolation passage 60, and a second recovery valve 44a provided in the middle of the second recovery passage 44. The control unit 100 synchronously opens and closes the first supply valve 71a, the first replenishment valve 54a, the second return valve 63a, and the second recovery valve 44a, and synchronously opens and closes the second supply valve 75a, the first return valve 53a, the second replenishment valve 64a, and the first recovery valve 43a.

[0045] (2) Second Embodiment Figure 6 is a schematic diagram showing the general configuration of the adsorption recovery device 1 of the second embodiment. The configuration of the adsorption recovery device 1 of this embodiment is the same as that of the first embodiment shown in Figure 1, except that the first bypass 73 and the second bypass 77 are omitted.

[0046] In this embodiment, when starting up the adsorption recovery device 1, the circulation path between the desorption flow path 30 and the cooling flow path 40 can be quickly filled with an inert gas. That is, with the first isolation outflow valve 52a of the first isolation flow path 50 and the second isolation outflow valve 62a of the second isolation flow path 60 closed and all other valves open, an inert gas is supplied from the inert gas supply source 70 through the first supply path 71 and the first recovery valve 43a of the first recovery path 43, and also through the second supply path 75 and the second recovery valve 44a of the second recovery path 44, to supply and fill the inert gas into the desorption flow path 30 and the cooling flow path 40.

[0047] Regarding the behavior of each valve and the movement of the inert gas in the operating state of the adsorption recovery device 1 of this embodiment, it is different from the first embodiment in that the inert gas is directly supplied from the inert gas supply source 70 to the first isolation flow path 50 and the second isolation flow path 60. Among the valves shown in FIG. 6, close the first recovery valve 43a of the first recovery path 43, the second recovery valve 44a of the second recovery path 44, the first replenishment valve 54a of the first replenishment path 54, and the second replenishment valve 64a of the second replenishment path 64, and open all other valves. In this embodiment, it is assumed that the supply pressure of the inert gas supplied from the inert gas supply source 70 is low, and the pressure P 51 and the pressure P 52 on the upstream side 51 and the downstream side 52 of the first isolation flow path 50, and the pressure P 61 and the pressure P 62 on the upstream side 61 and the downstream side 62 of the second isolation flow path 60 are relatively low. That is, different from the first embodiment, the pressure in the first isolation region 15 is P 51 <P 21 、P 51 <P 22 、P 52 <P 21 、and P 52 <P 22 , and the pressure in the second isolation region 16 is P 61 <P 42 、P 61 <P 22 、P 62 <P 41 、and P 62 <P 21This scenario is assumed. In this case, the oxygen-containing gas leaks from the adsorption region 12 to the first isolation region 15, and gas leaks from the desorption region 13 towards the first isolation region 15. As a result, the first isolation region 15 can prevent the oxygen-containing gas from leaking from the adsorption region 12 to the desorption region 13 via the first isolation region 15, and the gas containing a high concentration of the adsorbed substance from leaking from the desorption region 13 to the adsorption region 12. In addition, the oxygen-containing gas leaks from the adsorption region 12 to the second isolation region 16, and gas leaks from the cooling region 14 towards the second isolation region 16. As a result, the second isolation region 16 can prevent the oxygen-containing gas from leaking from the adsorption region 12 to the cooling region 14 via the second isolation region 16, and the gas containing the adsorbed substance from leaking from the cooling region 14 to the adsorption region 12.

[0048] (3) Third Embodiment Figure 7 is a schematic diagram showing the general configuration of the adsorption recovery device 1 of the third embodiment. The adsorption recovery device 1 of this embodiment differs from the first and second embodiments in that the inert gas from the inert gas supply source 70 is directly supplied only to the first isolation channel 50, while the second isolation channel 60 also has a supply path that directly supplies inert gas.

[0049] With the first bypass valve 73a of the first bypass circuit 73 closed and all other valves open, as shown in Figure 7, the inert gas from the inert gas supply source 70 travels through the open first supply valve 71a to the upstream side 51 of the first isolation passage 50, and through the first isolation area 15 to the downstream side 52. The inert gas then travels through the open first replenishment valve 54a to the upstream side 41 of the cooling passage 40, and through the cooling area 14 to the downstream side 42.

[0050] The inert gas flows from the downstream side 42 of the cooling channel 40 along the branching channels to the desorption channel 30 and the second isolation channel 60. The inert gas that reaches the desorption channel 30 is heated by the heater 80 on the upstream side 31, then passes through the desorption region 13, containing the adsorbed substance, and reaches the downstream side 32. There it is cooled by the cooler 90, the adsorbed substance is adsorbed and removed, and in a cooled state it reaches the upstream side 41 of the cooling region 14 again, regenerating the adsorption rotor 10. Meanwhile, the inert gas that passes through the open second recovery valve 44a and reaches the second isolation channel 60 goes from the upstream side 61 through the second isolation region 16 to the downstream side 62, and then passes through the open second recirculation valve 63a to the upstream side 21 of the adsorption channel 20 from the second recirculation channel 63, where it merges with a gas containing volatile adsorbed substances, and as it passes through the adsorption region 12, it adsorbs the adsorbed substance onto the adsorption rotor 10, and reaches the downstream side 22.

[0051] In the state shown in Figure 7, the pressure P is measured at the upstream side 51 of the first isolation channel 50, which is closest to the inert gas supply source 70. 51 and the pressure P on the downstream side 52 52 (See Figure 2) The pressure P becomes relatively high, and the pressure P of the second isolation channel 60 located further downstream of one of the channels that branch off from the downstream side 42 of the cooling channel 40 is located upstream 61 of the second isolation channel 60. 61 and the pressure P on the downstream side 62 62 (See Figure 2) is the lowest. [Explanation of symbols]

[0052] 1. Adsorption and recovery device 10 Adsorption rotor 11 Axis 12 Adsorption area 13 Desorption area 14 Cooling area 15 First isolation area 16 Second isolation area 20 Adsorption channel 21 Upstream side of the adsorption channel 21a Adsorption inlet valve 21b Adsorption blower fan 22 Downstream side of the adsorption channel 22a Adsorption outlet valve 30 Detachable channel 31 Upstream side of the detachment channel 32 Downstream side of the detachment channel 40 Cooling channel 41 Upstream side of the cooling channel 41b Cooling fan 42 Downstream side of the cooling channel 43 First recovery path 43a First recovery valve 44 Second recovery path 44a Second recovery valve 50 First isolation channel 51 Upstream side of the first isolation channel 52 Downstream side of the first isolation channel 52a First isolation outlet valve 53 First part flow path 53a First part flow valve 54 First replenishment channel 54a First replenishment valve 60 Second isolation channel 61 Upstream side of the second isolation channel 62 Downstream side of the second isolation channel 62a Second isolation outlet valve 63 Second reflux passage 63a Second reflux valve 64 Second replenishment channel 64a Second replenishment valve 70 Inert gas supply source 71 First supply channel 71a First supply valve 73 First detour route 73a First detour valve 75 Second supply channel 75a Second supply valve 77 Second detour 77a Second detour valve 80 Heater 90 Cooler 100 Control Unit 110 CPU 120 ROM 130 RAM, 150 storage, 190 bus

Claims

1. An adsorption rotor is composed of a structure having a ventilated gap on which an adsorbent is supported, and which rotates in the rotational direction around its axis, An adsorption region through which a gas containing a volatile adsorbent is passed and the adsorbent is adsorbed onto the structure, A desorption region is located downstream of the adsorption region in the rotational direction, through which a desorption gas is passed and the adsorbed substance adsorbed on the structure is desorbed; A cooling region is located downstream of the detachment region in the direction of rotation, through which regenerative gas is passed to cool the structure, A first isolation region is provided between the adsorption region and the desorption region, through which an inert gas is passed, A second isolation region is provided between the cooling region and the adsorption region, through which an inert gas is passed, A suction rotor equipped with a suction rotor.

2. The suction rotor is provided as described in claim 1, A gas containing a volatile adsorbent is passed through the adsorption region from one side of the adsorption rotor to the other side. The desorption gas is passed through the desorption region from the other side to the one side. The regenerated gas is passed through the cooling region from one side to the other side. Adsorption and recovery device.

3. The inert gas is passed through the first isolation region from the other side to the one side. The adsorption recovery apparatus according to claim 2, wherein the inert gas is passed through the second isolation region from the other side to the one side.

4. A control unit is provided that controls the pressure of the first isolation region to be higher than the pressure of the adsorption region, and the pressure of the second isolation region to be lower than the pressures of the cooling region and the adsorption region. The adsorption recovery device according to claim 2.

5. On one side of the adsorption rotor, the upstream side of the adsorption channel that supplies air to the adsorption region, the downstream side of the desorption channel that supplies air to the desorption region, the upstream side of the cooling channel that supplies air to the cooling region, the downstream side of the first isolation channel that supplies air to the first isolation region, and the downstream side of the second isolation channel that supplies air to the second isolation region are located. On the other side of the adsorption rotor, the downstream side of the adsorption channel, the upstream side of the desorption channel, the downstream side of the cooling channel, the upstream side of the first isolation channel, and the upstream side of the second isolation channel are located. In the adsorption channel, the pressure on the upstream side relative to the adsorption region is P ２１ , and the pressure downstream of the adsorption region is P ２２ year, In the aforementioned cooling channel, the pressure on the upstream side relative to the cooling region is P ４１ , and the pressure downstream of the cooling region is P ４２ year, In the first isolation channel, the pressure on the upstream side relative to the first isolation region is P ５１ , and the pressure on the downstream side relative to the first isolation region is P ５２ year, In the second isolation channel, the upstream pressure relative to the second isolation region is P ６１ , and the pressure on the downstream side with respect to the second isolation region is P ６２ In that case, P ５１ >P ２１ 、 P ５１ >P ２２ 、 P ５２ >P ２１ 、 P ５２ >P ２２ 、 P ６１ <P ４２ 、 P ６１ <P ２２ 、 P ６２ <P ４１ ,and, P ６２ <P ２１ A control unit is provided to control the pressures in the adsorption channel, the cooling channel, the first isolation channel, and the second isolation channel, so as to be the case. The adsorption recovery device according to claim 2.

6. On one side of the adsorption rotor, the upstream side of the adsorption channel that supplies air to the adsorption region, the downstream side of the desorption channel that supplies air to the desorption region, the upstream side of the cooling channel that supplies air to the cooling region, the downstream side of the first isolation channel that supplies air to the first isolation region, and the downstream side of the second isolation channel that supplies air to the second isolation region are located. On the other side of the adsorption rotor, the downstream side of the adsorption channel, the upstream side of the desorption channel, the downstream side of the cooling channel, the upstream side of the first isolation channel, and the upstream side of the second isolation channel are located. In the adsorption channel, the pressure on the upstream side relative to the adsorption region is P ２１ , and the pressure downstream of the adsorption region is P ２２ year, In the aforementioned cooling channel, the pressure on the upstream side relative to the cooling region is P ４１ , and the pressure downstream of the cooling region is P ４２ year, In the first isolation channel, the pressure on the upstream side relative to the first isolation region is P ５１ , and the pressure on the downstream side relative to the first isolation region is P ５２ year, In the second isolation channel, the upstream pressure relative to the second isolation region is P ６１ , and the pressure on the downstream side with respect to the second isolation region is P ６２ In that case, P ５１ <P ２１ 、 P ５１ <P ２２ 、 P ５２ <P ２１ 、 P ５２ <P ２２ 、 P ６１ <P ４２ 、 P ６１ <P ２２ 、 P ６２ <P ４１ ,and, P ６２ <P ２１ A control unit is provided to control the pressures in the adsorption channel, the cooling channel, the first isolation channel, and the second isolation channel, so as to be the case. The adsorption recovery device according to claim 2.

7. The adsorption recovery apparatus according to claim 2, further comprising: a cooler for cooling the adsorbed substance contained in the desorption gas that has passed through the desorption region; and a heater for heating the regenerated gas that has passed through the cooling region.

8. The adsorption recovery apparatus according to claim 7, wherein the regenerated gas cooled by the cooler is supplied to the cooling region, and the desorption gas heated by the heater is supplied to the desorption region.

9. An inert gas supply source that supplies the aforementioned inert gas, A first supply channel connecting the inert gas supply source and the upstream side of the first isolation channel, A first supply valve is provided in the middle of the first supply path, A second supply channel connecting the inert gas supply source and the upstream side of the second isolation channel, A second supply valve is provided in the middle of the second supply path, A first ring channel connecting the downstream side of the first isolation channel and the upstream side of the adsorption channel, A first recirculation valve is provided in the middle of the first recirculation channel, A first replenishment passage connecting the downstream side of the first isolation passage and the upstream side of the cooling passage, A first replenishment valve is provided in the middle of the first replenishment passage, A second ring channel connecting the downstream side of the second isolation channel and the upstream side of the adsorption channel, A second recirculation valve is provided in the middle of the second recirculation channel, A second replenishment passage connects the downstream side of the second isolation passage and the upstream side of the cooling passage, A second replenishment valve is provided in the middle of the second replenishment passage, A first recovery path connects the downstream side of the cooling channel and the upstream side of the first isolation channel, A first recovery valve is provided in the middle of the first recovery path, A second recovery path connects the downstream side of the cooling channel and the upstream side of the second isolation channel, A second recovery valve is provided in the middle of the second recovery path, Furthermore, The control unit, The first supply valve, the first replenishment valve, the second return valve, and the second recovery valve are opened and closed in synchronous manner. The second supply valve, the first return valve, the second replenishment valve, and the first recovery valve are opened and closed in a synchronous manner. The adsorption recovery device according to claim 6.

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