High-safety PSA (Pressure Swing Adsorption) hydrogen extraction device for methanol production

Abstract

The utility model discloses a high-safety PSA hydrogen extraction device for methanol production, and relates to the technical field of hydrogen extraction devices, the high-safety PSA hydrogen extraction device comprises a tank body, a motor is fixedly mounted at the top of the tank body, a reciprocating screw rod is rotatably connected in the tank body, the outer side of the reciprocating screw rod is in threaded connection with a first sliding block, and the first sliding block is in threaded connection with a second sliding block. And mounting boxes are fixedly mounted on the two corresponding sides of the first sliding block, and a tooth set is fixedly mounted in the tank body. The device has the advantages that when the first sliding block moves, the mounting boxes can move along with the first sliding block, and gears are driven to operate through the meshing relation between the gears arranged in the first sliding block and the tooth set arranged in the tank body; the gear rotates to drive the rotating shaft and the stirring paddle to synchronously rotate, so that the adsorbent can be stirred and reciprocated up and down, the adsorbent can be in full contact with mixed gas, the adsorption effect is improved, and the purity of hydrogen is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen extraction devices, in particular to a PSA hydrogen extraction device for methanol production with relatively high safety. Background Art

[0002] Pressure swing adsorption, recovering or purifying hydrogen from a hydrogen-rich gas stream, can produce hydrogen of different purities by changing the operating conditions. Pressure swing adsorption (PSA for short) is a new gas separation technology. Taking the adsorbent molecular sieve as an example, its principle is to separate the gas mixture by utilizing the difference in the "adsorption" properties of molecular sieves to different gas molecules.

[0003] A Chinese utility model patent with application number 201920958658.9 proposes a pressure swing adsorption hydrogen extraction device, including a filter, an adsorption tank, an outer cover and a material tank, a first ventilation pipe is arranged on one side of the filter, and a blower is arranged on the other side of the first ventilation pipe, the adsorption tank is arranged at the bottom of the filter, and a connecting head is penetrated through the outer wall of the adsorption tank, a second ventilation pipe is arranged at the bottom of the connecting head, and a first pipe joint is installed at the bottom of the second ventilation pipe, a second pipe joint is installed at the bottom of the first pipe joint, and a block is installed on the outside of the second pipe joint, and a vacuum pump is arranged at the bottom of the second pipe joint, and a plate is arranged on the back of the vacuum pump; the utility model proposes a pressure swing adsorption device that is conducive to extracting hydrogen, which has the characteristics of high product purity, simple equipment, simple operation and maintenance, continuous cycle operation, and can be fully automated.

[0004] After being improved, the above-mentioned device is helpful to improve the flexibility and reliability of the device's operation by setting up a moving shaft, cross bars, pins and hydraulic push rods, which can facilitate users' controllability of material use and simplify the operating procedures. However, in the process of stirring the adsorbent by rotating the stirring plate, the stirring plate can only stir the same place, resulting in a poor stirring effect. For this reason, we propose a PSA hydrogen extraction device for methanol production with higher safety. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a PSA hydrogen extraction device for methanol production with higher safety, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a PSA hydrogen extraction device for methanol production with higher safety, comprising a tank body, a motor fixedly installed on the top of the tank body, a reciprocating screw rod rotatably connected inside the tank body, a slider 1 is threadedly connected to the outer side of the reciprocating screw rod, mounting boxes are fixedly installed on the two corresponding sides of the slider 1, a tooth group is fixedly installed inside the tank body, a rotating shaft is rotatably connected inside the mounting box, a gear is fixedly installed on the outer side of the rotating shaft, the gear is meshingly connected with the tooth group, stirring paddles are fixedly installed on the outer side of the rotating shaft and at both ends corresponding to the gear, a sliding groove is provided inside the mounting box, the sliding groove is slidably connected with the tooth group, a feeding pipe is fixedly installed on one side of the tank body, a discharge pipe is fixedly installed on the side of the tank body away from the feeding pipe, and a gas filling pipe is fixedly installed on one end of the tank body.

[0007] Preferably, a feeding port is fixedly installed on the top of the feeding pipe, and the feeding port is arranged in a trumpet shape. By arranging the feeding port in a trumpet shape, it is convenient to perform feeding processing on the inside of the tank body.

[0008] Preferably, a sealing disk is fixedly installed inside the gas filling pipe, and a sealing shaft is slidably connected inside the sealing disk. A return spring is opened on the inner wall of the gas filling pipe, and a curved slider is fixedly installed inside the return spring, and the curved slider is slidably connected inside the return spring. The slider is fixedly connected to the curved slider, and a moving block is fixedly connected to one end of the curved slider. The moving block is fixedly connected to the sealing shaft, and a sealing ring is fixedly connected to one end of the moving block. The sealing shaft moves, thereby driving the moving block, the curved slider and the sealing ring to move, and the connection between the gas filling pipe and the pipeline for injecting gas is sealed to prevent leakage and improve safety.

[0009] Preferably, a sealing strip is provided at one end of the sealing ring away from the tank body, and the sealing strip further improves the sealing performance, thereby further improving the safety.

[0010] Preferably, two buffer boxes are fixedly installed inside the tank body, a plurality of buffer springs are arranged inside the buffer box, damping is arranged inside the buffer spring, a buffer plate is fixedly connected to one end of the buffer spring, and the buffer spring cooperates with the installation box. The cooperation of the buffer plate, buffer spring and damping can prevent the slider from being damaged when it descends under the action of its own weight.

[0011] Preferably, a control panel is fixedly installed at one end of the tank body, and solenoid valves are provided on the outsides of the feeding pipe, the gas filling pipe and the discharge pipe. The solenoid valves and the motor are electrically connected to the control panel. The solenoid valves are used to facilitate the control of the switches of the feeding pipe, the gas filling pipe and the discharge pipe, and the control panel is used to facilitate the user to operate the device.

[0012] The utility model provides a PSA hydrogen extraction device for methanol production with higher safety, which has the following beneficial effects:

[0013] 1. The PSA hydrogen extraction device for methanol production with higher safety drives the operation of the motor through the control panel. When the motor is running, it will drive the reciprocating screw to operate, and then drive the slider to move up and down on the outside of the reciprocating screw. At the same time, when the slider moves, the mounting box will move accordingly, and the gears arranged inside the slider and the tooth group arranged inside the tank body are meshed to drive the gears to operate, so that the rotation shaft and the stirring paddle are driven to operate synchronously through the operation of the gears, and then the adsorbent can be stirred while being reciprocated up and down, so that the adsorbent can be fully contacted with the mixed gas, thereby improving the adsorption effect and being beneficial to improving the purity of the hydrogen.

[0014] 2. The PSA hydrogen extraction device for methanol production with higher safety, when adding mixed gas through the gas filling pipe, by opening the solenoid valve, after the solenoid valve is opened, the gas inside the tank will automatically escape to the outside of the gas filling pipe, thereby pushing the sealing shaft, so that the sealing shaft drives the moving block and the sealing ring to move, so as to seal the connection between the gas adding pipeline and the gas filling pipe, thereby improving its safety, and through the cooperation of the set buffer spring, damping and buffer plate, it is ensured that when the reciprocating screw is not running, the slider will not be damaged when its own weight drops, further improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 This is a cross-sectional view of the installation box of the utility model;

[0019] Figure 4 This is a cross-sectional view of the buffer box of the utility model;

[0020] Figure 5 This is a cross-sectional view of the gas filling pipe of the utility model.

[0021] In the figure: 1. tank body; 2. motor; 3. control panel; 4. feeding pipe; 5. feeding port; 6. gas pipe; 7. discharge pipe; 8. solenoid valve; 9. reciprocating screw; 10. tooth group; 11. slider 1; 12. mounting box; 13. stirring paddle; 14. buffer box; 15. sliding groove; 16. rotating shaft; 17. gear; 18. buffer plate; 19. buffer spring; 20. damping; 21. sealing disk; 22. sealing shaft; 23. moving block; 24. sealing ring; 25. reset spring; 26. curved slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 5 The utility model provides a technical solution: a PSA hydrogen extraction device for methanol production with high safety, comprising a tank body 1, a motor 2 is fixedly installed on the top of the tank body 1, a reciprocating screw rod 9 is rotatably connected inside the tank body 1, a slider 11 is threadedly connected to the outer side of the reciprocating screw rod 9, and a mounting box 12 is fixedly installed on the two sides corresponding to the slider 11, a tooth group 10 is fixedly installed inside the tank body 1, a rotating shaft 16 is rotatably connected inside the mounting box 12, a gear 17 is fixedly installed on the outer side of the rotating shaft 16, and the gear 17 is meshedly connected with the tooth group 10, and stirring paddles 13 are fixedly installed on the outer side of the rotating shaft 16 and at the two ends corresponding to the gear 17, and a sliding groove 15 is opened inside the mounting box 12, and the sliding groove 15 is slidably connected with the tooth group 10 A feeding pipe 4 is fixedly installed on one side of the tank body 1, a discharge pipe 7 is fixedly installed on the side of the tank body 1 away from the feeding pipe 4, and a gas filling pipe 6 is fixedly installed on one end of the tank body 1. Adsorbent is added to the inside of the tank body 1 through the provided feeding pipe 4, and then the reciprocating screw 9 is driven by the motor 2 to operate, so that the reciprocating screw 9 drives the slider 11 to move back and forth up and down inside the tank body 1. When the slider 11 moves, it will drive the installation box 12 to move synchronously, and through the meshing relationship between the gear 17 inside the installation box 12 and the tooth group 10, the gear 17 is driven to operate, and then the operation of the gear 17 drives the stirring paddle 13 and the rotating shaft 16 to operate, so as to stir the adsorbent inside the tank body 1, increase the contact between the mixed gas and the adsorbent, and improve the purity of the hydrogen.

[0024] A feeding port 5 is fixedly installed on the top of the feeding pipe 4, and the feeding port 5 is set to be in a trumpet shape. By setting the feeding port 5 in a trumpet shape, it is convenient to add the adsorbent. A sealing disk 21 is fixedly installed inside the gas filling pipe 6, and a sealing shaft 22 is slidably connected inside the sealing disk 21. A return spring 25 is provided on the inner wall of the gas filling pipe 6, and a 27 is fixedly installed inside the return spring 25. A curved slider 26 is slidably connected inside the return spring 25, and 27 is fixedly connected to the curved slider 26. One end of the curved slider 26 is fixedly connected to a moving block 23, and the moving block 23 is connected to The sealing shaft 22 is fixedly connected, and one end of the moving block 23 is fixedly connected with a sealing ring 24. When adding mixed gas, it is necessary to open the solenoid valve 8 on the outside of the gas filling pipe 6, so that the gas inside the tank body 1 will push the sealing shaft 22 to move, and the sealing shaft 22 will drive the moving block 23 and the sealing ring 24 to move. The sealing ring 24 is used to seal the gas-added pipeline and the gas filling pipe 6 to prevent the mixed gas from escaping and improve safety. A sealing strip is provided at the end of the sealing ring 24 away from the tank body 1, and the sealing strip is provided to further improve its sealing performance.

[0025] Two buffer boxes 14 are fixedly installed inside the tank body 1, and multiple buffer springs 19 are arranged inside the buffer box 14. A damper 20 is arranged inside the buffer spring 19. One end of the buffer spring 19 is fixedly connected to a buffer plate 18, and the buffer spring 19 cooperates with the installation box 12. The buffer spring 19, the damper 20 and the buffer plate 18 can prevent the slider 11 and the installation box 12 from being damaged when they fall due to their own weight. A control panel 3 is fixedly installed at one end of the tank body 1, and solenoid valves 8 are arranged on the outside of the feeding pipe 4, the gas filling pipe 6 and the discharge pipe 7. The solenoid valve 8 and the motor 2 are electrically connected to the control panel 3. The solenoid valve 8 can be used to control the opening and closing of the feeding pipe 4, the gas filling pipe 6 and the discharge pipe 7, and the control panel 3 can be used to control the device.

[0026] In summary, the PSA hydrogen extraction device for methanol production with higher safety, when in use, opens the solenoid valve 8 on the outside of the feeding pipe 4 through the control panel 3, and then adds the adsorbent to the inside of the tank body 1 through the feeding port 5, and then opens the solenoid valve 8 on the outside of the gas filling pipe 6, so that the gas inside the tank body 1 will push the sealing shaft 22 to move, and the sealing shaft 22 drives the moving block 23 and the sealing ring 24 to move, and the sealing ring 24 is used to seal the pipeline for adding gas and the gas filling pipe 6 to prevent the mixed gas from escaping and improve safety, and then the mixed gas is added through the gas filling pipe 6, and then the motor 2 is started, and the reciprocating screw 9 is driven by the motor 2 to operate, so that the reciprocating screw 9 drives The slider 11 moves back and forth up and down inside the tank body 1. When the slider 11 moves, it will drive the installation box 12 to move synchronously, and through the meshing relationship between the gear 17 inside the installation box 12 and the tooth group 10, the gear 17 is driven to operate, and then the operation of the gear 17 drives the stirring paddle 13 and the rotating shaft 16 to operate, so as to stir the adsorbent inside the tank body 1, increase the contact between the mixed gas and the adsorbent, and improve the purity of the hydrogen. After the adsorption is completed, the hydrogen that is difficult to adsorb is extracted from the inside of the tank body 1 by a vacuum pump, and the adsorbent is discharged through the discharge pipe 7. In addition, the multiple solenoid valves 8 and the device inside the gas filling pipe 6 can improve the overall sealing of the device, thereby improving the safety.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PSA hydrogen extraction device for methanol production with high safety, comprising a tank body (1), characterized in that: A motor (2) is fixedly mounted on the top of the tank body (1), a reciprocating screw rod (9) is rotatably connected inside the tank body (1), a slider (11) is threadedly connected to the outside of the reciprocating screw rod (9), mounting boxes (12) are fixedly mounted on the two corresponding sides of the slider (11), a tooth group (10) is fixedly mounted inside the tank body (1), a rotating shaft (16) is rotatably connected inside the mounting box (12), a gear (17) is fixedly mounted on the outside of the rotating shaft (16), and the gear (17) is fixedly mounted on the outside of the gear (17). 7) is meshedly connected with the tooth group (10), stirring paddles (13) are fixedly installed on the outer side of the rotating shaft (16) and at the two ends corresponding to the gear (17), a sliding groove (15) is provided inside the installation box (12), and the sliding groove (15) is slidably connected with the tooth group (10), a feeding pipe (4) is fixedly installed on one side of the tank body (1), a discharge pipe (7) is fixedly installed on the side of the tank body (1) away from the feeding pipe (4), and a gas filling pipe (6) is fixedly installed on one end of the tank body (1).

2. A PSA hydrogen extraction device for methanol production with higher safety according to claim 1, characterized in that: A feeding port (5) is fixedly mounted on the top of the feeding pipe (4), and the feeding port (5) is configured to be trumpet-shaped.

3. A PSA hydrogen extraction device for methanol production with higher safety according to claim 1, characterized in that: A sealing disk (21) is fixedly installed inside the gas filling pipe (6), and a sealing shaft (22) is slidably connected inside the sealing disk (21). A return spring (25) is provided on the inner wall of the gas filling pipe (6), and a (27) is fixedly installed inside the return spring (25). A curved slider (26) is slidably connected inside the return spring (25), and the (27) is fixedly connected to the curved slider (26). One end of the curved slider (26) is fixedly connected to a moving block (23), and the moving block (23) is fixedly connected to the sealing shaft (22). One end of the moving block (23) is fixedly connected to a sealing ring (24).

4. A PSA hydrogen extraction device for methanol production with higher safety according to claim 3, characterized in that: A sealing strip is provided at one end of the sealing ring (24) away from the tank body (1).

5. A PSA hydrogen extraction device for methanol production with higher safety according to claim 1, characterized in that: Two buffer boxes (14) are fixedly installed inside the tank body (1), a plurality of buffer springs (19) are arranged inside the buffer box (14), a damper (20) is arranged inside the buffer spring (19), one end of the buffer spring (19) is fixedly connected to a buffer plate (18), and the buffer spring (19) cooperates with the installation box (12).

6. A PSA hydrogen extraction device for methanol production with higher safety according to claim 1, characterized in that: A control panel (3) is fixedly mounted on one end of the tank body (1); solenoid valves (8) are arranged on the outer sides of the feeding pipe (4), the gas filling pipe (6) and the discharge pipe (7); and the solenoid valves (8) and the motor (2) are electrically connected to the control panel (3).

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