A pressure swing adsorption separation purifier for hydrogen production from coke oven gas

Abstract

The present application relates to hydrogen production equipment technical field, specifically provide a kind of coke oven gas hydrogen production with pressure swing adsorption separation purifier.The present application discloses a kind of coke oven gas hydrogen production with pressure swing adsorption separation purifier, including tank body, annular cylinder, gas collector, flow guide seat, air inlet pipe, plugging assembly one, plugging assembly two and drive mechanism;The annular cylinder is coaxially arranged in tank body, and annular gas inlet gap is formed between the tank body;The annular cylinder inside is separated into multiple adsorption cavities by vertical partition, and the annular cylinder sealing rotation sleeve is connected to the outer wall of gas collector.The present application breaks through the limitation of traditional radial flow adsorption device fixed path, by annular cylinder rotation, plugging assembly on-off cooperation, can realize single-stage short path, multistage medium path, long path three modes free switching, both can meet large flow low purity working condition, also can realize high-purity hydrogen deep purification, greatly improve the applicability of device.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production equipment technology, specifically to a pressure swing adsorption separator for hydrogen production from coke oven gas. Background Technology

[0002] With the widespread application of coke oven gas to hydrogen production processes, pressure swing adsorption (PSA), as a core technology for hydrogen purification, has placed higher demands on adsorption efficiency, gas separation accuracy, and operational stability. Currently, adsorption devices used for gas purification and separation in industry are mainly divided into two categories: axial flow adsorption devices and radial flow adsorption devices.

[0003] However, existing radial flow adsorption devices have obvious structural defects: the gas only penetrates the adsorption bed in a single radial direction along concentric circles. The adsorption path is limited to the radius of the cylinder, and the path length is fixed and cannot be adjusted. It is impossible to actively lengthen the adsorption path according to the gas composition, processing load and purification accuracy requirements, resulting in short contact time between the gas and the adsorbent, insufficient adsorption of impurities, and limited hydrogen purification accuracy.

[0004] To address this, we propose a pressure swing adsorption (PSA) separator for hydrogen production from coke oven gas. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a pressure swing adsorption separator for hydrogen production from coke oven gas.

[0006] The technical solution adopted by the present invention is as follows: The present invention provides a pressure swing adsorption separation and purification device for hydrogen production from coke oven gas, comprising a tank, an annular cylinder, a gas collecting pipe, a flow guide seat, an air inlet pipe, a first sealing component, a second sealing component, and a driving mechanism. The annular cylinder is coaxially disposed inside the tank, forming an annular air inlet gap with the tank; the interior of the annular cylinder is divided into multiple adsorption chambers by vertical partitions, and the annular cylinder is sealed and rotatably sleeved on the outer wall of the gas collecting pipe. The top end of the gas collecting pipe penetrates through the top of the tank as a purified gas outlet, and the bottom end of the gas collecting pipe is fixedly connected to the guide seat. The guide seat is fixed to the bottom of the tank by a support rod. The bottom of the tank is connected to the air inlet pipe. The outer ring wall of the annular cylinder is provided with an air inlet corresponding to the adsorption chamber, and the inner ring wall is provided with an air outlet; the gas collecting pipe wall is provided with a gas collecting port matching the air outlet. A sealing cavity is provided between adjacent adsorption chambers. The sealing cavity is provided with a connecting port one and a connecting port two that connect the adjacent adsorption chambers. The sealing cavity is provided with a sealing component one that controls the opening and closing of the connecting port one. The inner wall of the tank is provided with a second sealing component for selectively sealing the air inlet; the annular cylinder is connected to a drive mechanism and can rotate circumferentially relative to the gas collecting pipe and the tank to achieve switching of the adsorption path.

[0007] Furthermore, the sealing assembly includes a mounting plate, an electric push rod, and a sealing block; the mounting plate is fixed to the inner wall of the sealing cavity, the electric push rod is mounted on the mounting plate, and the sealing block is connected to the output end of the electric push rod for sealing or opening the communication port.

[0008] Furthermore, the second sealing component includes a sealing plate and a fixing rod; one end of the fixing rod is fixed to the inner wall of the tank, and the other end is connected to the sealing plate; the sealing plate is sealed and fitted to the outer wall of the annular cylinder, and is used to selectively block the air inlet.

[0009] Furthermore, the multiple adsorption chambers are sequentially arranged circumferentially as a first adsorption chamber, a second adsorption chamber, a third adsorption chamber, and a fourth adsorption chamber; the corresponding air inlets are sequentially arranged as a first air inlet, a second air inlet, a third air inlet, and a fourth air inlet. The second sealing component is distributed on both sides of the second air inlet, one side of the third air inlet, and both sides of the fourth air inlet, and is used to selectively seal the air inlets when the annular cylinder rotates.

[0010] Furthermore, the gas collecting ports are arranged sequentially along the circumferential direction as a first gas collecting port, a second gas collecting port, a third gas collecting port, and a fourth gas collecting port; the gas dispersing ports are arranged sequentially along the circumferential direction as a first gas dispersing port, a second gas dispersing port, a third gas dispersing port, and a fourth gas dispersing port. When the annular cylinder is in its initial position, the air collecting port and the air dispersing port are connected in a one-to-one correspondence. After the annular cylinder rotates clockwise, the first to third air outlets are misaligned with the corresponding air collection ports, and the fourth air outlet is connected to the fourth air collection port. After the annular cylinder rotates counterclockwise, the second air outlet connects to the second air collection outlet, the fourth air outlet connects to the fourth air collection outlet, and the remaining air outlets are misaligned with their corresponding air collection outlets.

[0011] Furthermore, the adsorption chamber is provided with multiple staggered partition plates, which divide the adsorption chamber into multiple sub-chambers; adsorption ports are opened on the partition plates, and the adsorption ports of adjacent partition plates are close to the vertical partition plates on both sides, so that the gas forms a baffle path.

[0012] Furthermore, the driving mechanism includes a ring gear, a servo motor, and a drive gear; the ring gear is fixed to the bottom of the annular cylinder, the servo motor is fixed to the outside of the tank, and the drive gear is connected to the output shaft of the servo motor and meshes with the ring gear to drive the annular cylinder to rotate and be positioned.

[0013] Furthermore, a cylinder is fixed to the bottom of the annular cylinder, and a ball bearing is embedded at the bottom end of the cylinder; the top of the flow guide seat is a horizontal surface, and the ball bearing rolls in contact with the top of the flow guide seat for support and drag reduction.

[0014] Furthermore, the top and bottom of the annular cylinder are both detachable cover plates, and the cover plates are provided with material inlets corresponding to the sub-cavities, and the material inlets are equipped with sealing caps; the top of the tank is provided with an adsorbent filling port, and the bottom of the tank is provided with an adsorbent discharge port.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: 1. This invention breaks through the limitations of the fixed path of traditional radial flow adsorption devices. By rotating the annular cylinder and coordinating the on / off of the sealing components, it can freely switch between three modes: single-stage short path, multi-stage medium path, and series long path. It can meet the needs of high flow rate and low purity conditions, as well as achieve deep purification of high-purity hydrogen, greatly improving the applicability of the device.

[0016] 2. The present invention uses staggered partition plates to form a baffle channel in the adsorption chamber, combined with a multi-adsorption chamber series structure, which effectively lengthens the gas travel distance and residence time, allowing impurities to be adsorbed more fully, significantly improving the hydrogen separation accuracy and product gas purity, and solving the problem of insufficient adsorption in traditional devices. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention after the tank body has been removed; Figure 3 For the present invention Figure 2 The main view; Figure 4 for Figure 3 Schematic diagram of the cross section at point AA; Figure 5 This is a schematic diagram showing the positions of each air inlet, air outlet, and air collection port in this invention. Figure 6 This is a schematic diagram of the connection structure between the annular cylinder and the gas collecting pipe of the present invention; Figure 7 for Figure 6 The exploded diagram.

[0018] The components include: 1. Tank body; 2. Annular cylinder; 3. Gas collecting pipe; 4. Vertical partition; 5. Adsorption chamber; 6. Gas outlet; 7. Gas collecting port; 8. Guide seat; 9. Support rod; 10. Air inlet pipe; 11. Air inlet; 12. Sealing chamber; 13. Connecting port one; 14. Connecting port two; 15. Sealing assembly one; 151. Mounting plate; 152. Electric push rod; 153. Sealing block; 16. Sealing assembly two; 161. Sealing plate; 162. Fixing rod; 17. Partition plate; 18. Adsorption port; 19. Ring gear; 20. Servo motor; 21. Drive gear; 22. Cylindrical part; 23. Ball bearing; 24. Cover plate; 25. Material inlet; 26. Adsorption... 27. Adsorbent filling port; 1101. Adsorbent discharge port; 1102. First air inlet; 1103. Second air inlet; 1104. Third air inlet; 1105. Fourth air inlet; 601. First gas diffuser; 602. Second gas diffuser; 603. Third gas diffuser; 604. Fourth gas diffuser; 701. First gas collecting port; 702. Second gas collecting port; 703. Third gas collecting port; 704. Fourth gas collecting port; 501. First adsorption chamber; 502. Second adsorption chamber; 503. Third adsorption chamber; 504. Fourth adsorption chamber. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] like Figures 1-7 As shown, the present invention provides a pressure swing adsorption separator for hydrogen production from coke oven gas, comprising a tank 1, an annular cylinder 2, a gas collecting pipe 3, a flow guide seat 8, an air inlet pipe 10, a first sealing component 15, a second sealing component 16, and a drive mechanism. The annular cylinder 2 is coaxially arranged inside the tank 1, forming an annular air inlet gap with the inner wall of the tank 1, which is used to evenly distribute the coke oven gas to be purified. The interior of the annular cylinder 2 is evenly divided into multiple independent adsorption chambers 5 along the circumference by vertical partitions 4. The annular cylinder 2 is sealed and rotated on the outer wall of the gas collecting pipe 3 by a sealed bearing, and can rotate circumferentially relative to the gas collecting pipe 3. The gas collecting pipe 3 is a central vertical pipe, with its top end penetrating the top of the tank 1 as the main outlet for purified gas, and its bottom end fixedly connected to the guide seat 8. The flow guide seat 8 is a conical flow guide structure, which is fixed to the bottom of the tank 1 by the support rod 9. It is used to support the annular cylinder 2 and guide the bottom air intake to rise evenly. The bottom of the tank 1 is connected to the air inlet pipe 10. An air inlet 11 corresponding to the adsorption chamber 5 is opened on the outer ring wall of the annular cylinder 2, and an air outlet 6 is opened on the inner ring wall; an air collection port 7 matching the air outlet 6 is opened on the wall of the air collection pipe 3, and the purified gas enters the air collection pipe 3 and is discharged through the air outlet 6 and the air collection port 7. A sealing cavity 12 is provided between adjacent adsorption cavities 5. A connecting port 13 and a connecting port 14 are provided in the sealing cavity 12 to connect the adjacent adsorption cavities 5. A sealing component 15 is installed in the sealing cavity 12 to control the opening and closing of the connecting port 13, so as to realize the series or parallel switching of adsorption cavities 5. The connecting port 13 is close to the inner ring wall of the annular cylinder 2, and the connecting port 14 is close to the outer ring wall of the annular cylinder 2. The inner wall of the tank 1 is fixed with a second sealing component 16, which is used to selectively seal the air inlet 11 of the annular cylinder 2 and control the air inlet channel. The bottom of the annular cylinder 2 is connected to a drive mechanism, which drives the annular cylinder 2 to rotate and position precisely, realizing the switching of three adsorption paths: single-stage short path, multi-stage long path, and series deep purification.

[0022] like Figures 1-7 As shown, the sealing assembly 15 includes a mounting plate 151, an electric push rod 152, a sealing block 153, and a sealing gasket. The mounting plate 151 is fixed to the inner wall of the sealing cavity 12. The electric push rod 152 is horizontally mounted on the mounting plate 151. The sealing block 153 is fixed to the output end of the electric push rod 152. The sealing block 153 is covered with a sealing gasket on the outside, so as to achieve sealing or unobstructed opening of the communication port 13.

[0023] like Figures 1-7 As shown, the second sealing component 16 includes a sealing plate 161, a fixing rod 162, and a sealing strip; one end of the fixing rod 162 is welded and fixed to the inner wall of the tank 1, and the other end is connected to the sealing plate 161. The sealing strip is pasted on the inner side of the sealing plate 161 and is sealed and fitted to the outer wall of the annular cylinder 2 to achieve selective blocking of the air inlet 11.

[0024] like Figures 1-7As shown, the interior of the annular cylinder 2 is divided into four adsorption chambers 5 by vertical partitions 4, which are arranged in the circumferential direction as the first adsorption chamber 501, the second adsorption chamber 502, the third adsorption chamber 503, and the fourth adsorption chamber 504; the corresponding air inlets 11 are arranged in the same order as the first air inlet 1101, the second air inlet 1102, the third air inlet 1103, and the fourth air inlet 1104; the sealing components 2 16 are respectively arranged on both sides of the second air inlet 1102, one side of the third air inlet 1103, and both sides of the fourth air inlet 1104, and the air inlets 11 are precisely sealed in conjunction with the rotation of the annular cylinder 2.

[0025] like Figures 1-7 As shown, the gas collecting pipe 3 has four gas collecting ports 7 along its circumference, namely the first gas collecting port 701, the second gas collecting port 702, the third gas collecting port 703, and the fourth gas collecting port 704; the gas dispersing ports 6 on the inner ring wall of the annular cylinder 2 are namely the first gas dispersing port 601, the second gas dispersing port 602, the third gas dispersing port 603, and the fourth gas dispersing port 604. Initial position: The gas collecting port 7 and the gas dispersing port 6 are connected in a one-to-one correspondence, and the gas is directly discharged after being adsorbed by a single chamber; Rotate clockwise: the first air diffuser 601, the second air diffuser 602, the third air diffuser 603 are misaligned with the air collection port 7, and the fourth air diffuser 604 is connected to the fourth air collection port 704, realizing multi-cavity series adsorption. Rotating counterclockwise: The second gas diffuser 602 is connected to the second gas collecting port 702, and the fourth gas diffuser 604 is connected to the fourth gas collecting port 704, realizing dual-path parallel and series composite adsorption.

[0026] like Figures 1-7 As shown, the adsorption chamber 5 is provided with multiple staggered partition plates 17, which divide the adsorption chamber 5 into multiple sub-chambers. Adsorption ports 18 are opened on the partition plates 17. The adsorption ports 18 of adjacent partition plates 17 are close to the vertical partition plates 4 on both sides, so that the gas forms a baffle path in the adsorption chamber 5, prolonging the contact time between the gas and the adsorbent and improving the adsorption efficiency. The first connecting port 13 is connected to the sub-chamber closest to the gas collecting pipe 3, and the second connecting port 14 is connected to the sub-chamber farthest from the gas collecting pipe 3.

[0027] like Figures 1-7 As shown, the drive mechanism includes a ring gear 19, a servo motor 20, and a drive gear 21. The ring gear 19 is fixed to the outer ring of the bottom of the annular cylinder 2, the servo motor 20 is fixed to the outer base of the tank 1, and the drive gear 21 is connected to the output shaft of the servo motor 20 and meshes with the ring gear 19 to achieve precise positioning and rotation of the annular cylinder 2.

[0028] like Figures 1-7As shown, multiple cylinders 22 are uniformly fixed at the bottom of the annular cylinder 2, and ball bearings 23 are embedded at the bottom of the cylinders 22; the top of the guide seat 8 is a smooth horizontal surface, and the ball bearings 23 roll in contact with the top of the guide seat 8, reducing rotational resistance and providing stable support for the annular cylinder 2.

[0029] like Figures 1-7 As shown, the annular cylinder 2 is equipped with detachable sealing covers 24 at both the top and bottom. Each cover 24 has an adsorbent inlet 25 corresponding to a sub-cavity, and each inlet 25 is fitted with a threaded sealing cap (not shown in the figure). The tank 1 has an adsorbent filling port 26 at the top and an adsorbent discharge port 27 at the bottom, enabling rapid filling of the adsorbent into each sub-cavity or replacement. It should be noted that when filling the adsorbent, the adsorbent filling port 26 is opened, the sealing cap on the upper inlet 25 is unscrewed, and then the adsorbent is sequentially fed into the inlet 25 through the adsorbent filling port 26. When the used adsorbent needs to be discharged, the adsorbent discharge port 27 is opened, the sealing cap on the lower inlet 25 is opened, and the adsorbent is brought close to the adsorbent discharge port 27 to allow it to be discharged from the air inlet pipe 10. When replacing the adsorbent, the air inlet pipe 10 is temporarily separated from the coke oven gas, and reconnected after the adsorbent replacement is completed.

[0030] A filter screen is pre-laid in the sub-cavity to block the adsorption port 18, air inlet 11, air outlet 6, connecting port one 13, and connecting port two 14, preventing the adsorbent from being thrown out of the annular cylinder 2 and into the gas collecting pipe 3.

[0031] Working principle: The coke oven gas to be purified enters the tank 1 through the bottom air inlet pipe 10, and is evenly distributed to the annular air inlet gap through the guide seat 8, rising along the tank 1; the drive mechanism drives the annular cylinder 2 to rotate to the target position, the sealing component 2 16 seals the non-working air inlet 11, and the sealing component 1 15 controls the opening and closing of the connecting port, selecting the single-stage, multi-stage, or series adsorption path; the gas enters the adsorption chamber 5 through the air inlet 11, and penetrates the adsorbent layer along the baffle path formed by multiple sub-cavities. Impurities are captured by the adsorbent, and the purified hydrogen enters the gas collecting pipe 3 through the gas dispersing port 6 and the gas collecting port 7, and is discharged from the top of the gas collecting pipe 3; in conjunction with the pressure swing adsorption process, the adsorbent is regenerated through pressure relief and flushing, and the rotation of the annular cylinder 2 switches the adsorption path to ensure continuous operation of the device.

[0032] Work mode: Short path mode (initial position): Blocking component 2 16 does not block the air inlet 11, each adsorption chamber 5 works independently, and the gas passes through radially and quickly, which is suitable for high flow rate and low purity requirements.

[0033] Mid-path mode (counterclockwise rotation): Block the second air inlet 1102 and the fourth air inlet 1104, open the third air inlet 1103, and connect some adsorption chambers 5 in series to balance flow rate and purity.

[0034] Long path mode (clockwise rotation): Only the first air inlet 1101 is open, multiple adsorption chambers 5 are connected in series, gas flows through the baffle, high-purity hydrogen is purified, and impurities are deeply removed.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure swing adsorption (PSA) separator for hydrogen production from coke oven gas, characterized in that: It includes a tank body (1), an annular cylinder (2), a gas collecting pipe (3), a flow guide seat (8), an air inlet pipe (10), a first sealing component (15), a second sealing component (16), and a drive mechanism; The annular cylinder (2) is coaxially disposed inside the tank (1), forming an annular air intake gap with the tank (1); the interior of the annular cylinder (2) is divided into multiple adsorption chambers (5) by vertical partitions (4), and the annular cylinder (2) is sealed and rotatedly sleeved on the outer wall of the gas collecting pipe (3); The top end of the gas collecting pipe (3) passes through the top of the tank body (1) as the purified gas outlet. The bottom end of the gas collecting pipe (3) is fixed to the guide seat (8). The guide seat (8) is fixed to the bottom of the tank body (1) by the support rod (9). The bottom of the tank body (1) is connected to the air inlet pipe (10). The outer ring wall of the annular cylinder (2) is provided with an air inlet (11) corresponding to the adsorption chamber (5), and the inner ring wall is provided with an air outlet (6); the wall of the gas collecting pipe (3) is provided with an air collecting port (7) matching the air outlet (6). A sealing cavity (12) is formed between adjacent adsorption cavities (5). The sealing cavity (12) is provided with a connecting port one (13) and a connecting port two (14) connecting the adjacent adsorption cavities (5). The sealing cavity (12) is provided with a sealing component one (15) for controlling the opening and closing of the connecting port one (13). The inner wall of the tank (1) is provided with a sealing component 2 (16) for selectively sealing the air inlet (11); the annular cylinder (2) is connected to the driving mechanism and can rotate circumferentially relative to the gas collecting pipe (3) and the tank (1) to realize the switching of the adsorption path.

2. The pressure swing adsorption separation purifier for hydrogen production from coke oven gas according to claim 1, characterized in that: The first sealing component (15) includes a mounting plate (151), an electric push rod (152), and a sealing block (153); the mounting plate (151) is fixed to the inner wall of the sealing cavity (12), the electric push rod (152) is mounted on the mounting plate (151), and the sealing block (153) is connected to the output end of the electric push rod (152) for sealing or opening the first communication port (13).

3. The pressure swing adsorption separator purifier for hydrogen production from coke oven gas according to claim 2, characterized in that: The second sealing component (16) includes a sealing plate (161) and a fixing rod (162); one end of the fixing rod (162) is fixed to the inner wall of the tank (1), and the other end is connected to the sealing plate (161). The sealing plate (161) is sealed to the outer wall of the annular cylinder (2) for selectively blocking the air inlet (11).

4. The pressure swing adsorption separator purifier for hydrogen production from coke oven gas according to claim 3, characterized in that: Multiple adsorption chambers (5) are arranged in the circumferential direction as a first adsorption chamber (501), a second adsorption chamber (502), a third adsorption chamber (503), and a fourth adsorption chamber (504); the corresponding air inlets (11) are arranged in the circumferential direction as a first air inlet (1101), a second air inlet (1102), a third air inlet (1103), and a fourth air inlet (1104). The second sealing component (16) is distributed on both sides of the second air inlet (1102), one side of the third air inlet (1103), and both sides of the fourth air inlet (1104), and is used to selectively seal the air inlet (11) when the annular cylinder (2) rotates.

5. A pressure swing adsorption (PSA) separator purifier for hydrogen production from coke oven gas (COG) as claimed in claim 4, wherein: The gas collecting ports (7) are arranged in the following order along the circumference: first gas collecting port (701), second gas collecting port (702), third gas collecting port (703), and fourth gas collecting port (704); the gas dispersing ports (6) are arranged in the following order along the circumference: first gas dispersing port (601), second gas dispersing port (602), third gas dispersing port (603), and fourth gas dispersing port (604). When the annular cylinder (2) is in its initial position, the gas collecting port (7) and the gas dispersing port (6) are connected in a one-to-one correspondence; After the annular cylinder (2) rotates clockwise, the first air outlet (601), the second air outlet (602), the third air outlet (603) are misaligned with the corresponding air collection port (7), and the fourth air outlet (604) is connected to the fourth air collection port (704). After the annular cylinder (2) rotates counterclockwise, the second air outlet (602) is connected to the second air collection outlet (702), the fourth air outlet (604) is connected to the fourth air collection outlet (704), and the remaining air outlets (6) are misaligned with the corresponding air collection outlets (7).

6. A pressure swing adsorption separator for hydrogen production from coke oven gas according to claim 4, characterized in that: The adsorption chamber (5) is provided with multiple staggered partition plates (17), which divide the adsorption chamber (5) into multiple sub-chambers; adsorption ports (18) are opened on the partition plates (17), and the adsorption ports (18) of adjacent partition plates (17) are close to the vertical partition plates (4) on both sides respectively.

7. A pressure swing adsorption separator for hydrogen production from coke oven gas according to claim 5, characterized in that: The drive mechanism includes a ring gear (19), a servo motor (20) and a drive gear (21); the ring gear (19) is fixed to the bottom of the annular cylinder (2), the servo motor (20) is fixed to the outside of the tank (1), and the drive gear (21) is connected to the output shaft of the servo motor (20) and meshes with the ring gear (19).

8. The pressure swing adsorption separation purifier for hydrogen production from coke oven gas according to claim 7, characterized in that: The bottom of the annular cylinder (2) is fixed with a cylinder (22), and a ball bearing (23) is embedded at the bottom end of the cylinder (22); the top of the guide seat (8) is a horizontal surface, and the ball bearing (23) rolls in contact with the top of the guide seat (8).

9. A pressure swing adsorption separation purifier for hydrogen production from coke oven gas according to claim 8, characterized in that: The top and bottom of the annular cylinder (2) are both detachable cover plates (24). The cover plates (24) are provided with material inlets (25) corresponding to the sub-cavities. The material inlets (25) are equipped with sealing caps. The top of the tank (1) is provided with an adsorbent filling port (26), and the bottom of the tank (1) is provided with an adsorbent discharge port (27).

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