Coal chemical PSA gas separation device

Abstract

The utility model relates to a gas separation device technical field especially relates to a coal chemical industry PSA gas separation device, including processing tower, the inside of processing tower is provided with the shunt cover, the upper end of shunt cover is penetrated and is distributed with a plurality of shunt holes, the lower extreme of shunt cover is equipped with the gas inlet, the inside bottom of processing tower is fixedly installed with the locating bearing, the inner ring wall of locating bearing is interference fit with the axle rod no.

Description

Technical Field

[0001] This utility model relates to the technical field of gas separation devices, and in particular to a coal chemical PSA gas separation device. Background Technology

[0002] A coal chemical PSA gas separation unit is a device used to separate specific components from a mixed gas. PSA is an abbreviation for pressure swing adsorption. It utilizes the difference in adsorption capacity of adsorbents for different gas molecules under different pressures to achieve gas separation. In the coal chemical industry, PSA gas separation units are usually used to separate hydrogen from syngas (mainly composed of carbon monoxide and hydrogen).

[0003] Currently, the feed gas interface of the secondary PSA is connected to the product regulating valve of the primary PSA. In other words, a regulating valve structure is installed at the feed gas interface of the secondary PSA. This can easily lead to a decrease in gas utilization and introduce new impurities. Furthermore, when the feed gas is processed in the treatment tower, in most cases, the gas is dispersed by a simple guide plate to make it evenly distributed on the adsorption bed. This dispersion method is not uniform enough and local aggregation can still occur.

[0004] Therefore, we provide a PSA gas separation device for coal chemical industry. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a coal chemical PSA gas separation device. This device removes the regulating valve at the secondary PSA interface and adds a gas moving and dispersing structure inside the tower, allowing the gas to be more evenly dispersed onto the adsorption bed.

[0006] In view of this, the present invention provides a coal chemical PSA gas separation device, including a processing tower, wherein a flow divider is provided inside the processing tower, a plurality of flow divider holes are distributed through the upper end of the flow divider, and an air inlet is provided at the lower end of the flow divider.

[0007] A positioning bearing is fixedly installed at the bottom of the internal structure of the processing tower. A shaft is interference-fitted on the inner ring wall of the positioning bearing. An installation sleeve is fixedly sleeved on the surface of the shaft. Several turbulence blades are distributed and fixed on the outer ring wall of the installation sleeve.

[0008] The upper end of the first shaft is welded and fixed with the second shaft, and a number of baffle rods are distributed and fixed on the surface of the second shaft;

[0009] The processing tower has mesh plates fixedly arranged vertically inside, with gaps between adjacent mesh plates, and the gaps are filled with an adsorption layer made of activated carbon granules.

[0010] In detail, a sealed bearing is fixedly installed through the surface of the processing tower. A drive shaft is interference-fitted on the inner ring wall of the sealed bearing. A motor is installed at the outer end of the drive shaft. The outer ring wall of the motor is fixedly installed to the surface of the processing tower by a bracket. A drive shaft is installed inside the motor. The end of the drive shaft is fixedly connected to the end of the drive shaft by a coupling.

[0011] In detail, a drive bevel gear is fixedly installed at the end of the drive shaft away from the motor, and a linkage bevel gear is fixedly sleeved on the surface of the shaft, with the linkage bevel gear and the drive bevel gear meshing with each other.

[0012] In detail, an inner sleeve is fixed through the upper end of one side of the processing tower, and a pressure gauge is fixed through the inside of the inner sleeve.

[0013] In detail, a pressurization port is fixed through the side of the processing tower away from the pressure gauge, and a valve is provided on the surface of the pressurization port, with the valve core of the valve embedded inside the pressurization port.

[0014] In detail, an air pump is fixedly installed on the surface of the processing tower by a bracket. The air pump's outlet flange is connected to a pipe, and the end of the pipe away from the air pump is installed with the end flange of the pressurization interface.

[0015] In detail, a secondary raw material gas interface is provided at the lower end of the pressurization interface, which is fixed to the processing tower. A second valve is provided on the surface of the secondary raw material gas interface, and the valve core of the second valve is embedded inside the secondary raw material gas interface.

[0016] In detail, a frame is slidably fitted on the inner wall of the secondary raw material gas interface, a filter screen is embedded and fixed on the inner side of the frame, a limit block is fixedly installed on the inner wall of the secondary raw material gas interface, the inner side of the frame is attached to the surface of the limit block, and a knob is fixed on the side of the frame away from the limit block.

[0017] In detail, the outer ring wall of the frame is provided with external threads, and the inner wall of the secondary raw material gas interface is provided with internal threads, and the external threads and internal threads are threaded together.

[0018] In detail, the top of the processing tower is equipped with a top plate, and an exhaust port is fixed through the center of the top plate. A valve three is provided on the surface of the exhaust port, and the valve core of the valve three is embedded inside the exhaust port.

[0019] Compared with the prior art, this utility model provides a coal chemical PSA gas separation device, which has the following beneficial effects:

[0020] 1. In this utility model, the raw gas enters through the air inlet at the lower end of the diversion hood, and is evenly distributed to the adsorption layer through the diversion holes. The first shaft drives the turbulence blades to rotate through the bevel gear set driven by the motor, so that the gas forms a ring flow at the air inlet. At the same time, the turbulence rod on the second shaft creates turbulence in the diversion hood, further dispersing the gas and ensuring that it passes evenly through the diversion holes and contacts the adsorption layer, thereby improving the separation efficiency.

[0021] 2. This utility model directly connects to the primary PSA product gas via a secondary raw material gas interface, avoiding intermediate contamination. The filter screen intercepts impurities through a threaded frame, and the knob facilitates disassembly and cleaning. Valve 2 controls the air intake, and a limit block fixes the filter screen position, ensuring that high-purity gas enters the secondary separation stage, thus improving the quality of the final product.

[0022] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a coal chemical PSA gas separation device proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of a coal chemical PSA gas separation device proposed in this utility model;

[0025] Figure 3 This is a schematic diagram showing the distribution of baffle blades and baffle rods in a coal chemical PSA gas separation device proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the secondary feed gas interface of a coal chemical PSA gas separation device proposed in this utility model;

[0027] Figure 5 This is a partially enlarged schematic diagram of the internal and external thread connections of a coal chemical PSA gas separation device proposed in this utility model.

[0028] In the diagram: 1. Processing tower; 11. Diverter hood; 12. Diverter orifice; 13. Air inlet; 14. Positioning bearing; 15. Shaft 1; 16. Mounting sleeve; 17. Turbulence vane; 18. Shaft 2; 19. Turbulence rod; 1001. Sealed bearing; 1002. Drive shaft; 1003. Motor; 1004. Drive bevel gear; 1005. Linkage bevel gear; 2. Mesh plate; 21. Adsorption layer; 3. Internal sleeve; 31. Pressure gauge; 32. Pressurization interface; 33. Valve 1; 34. Air pump; 35. Pipeline; 4. Secondary raw material gas interface; 41. Valve 2; 42. Frame; 43. Filter screen; 44. Limit block; 45. Knob; 46. External thread; 47. Internal thread; 5. Top plate; 51. Exhaust interface; 52. Valve 3. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In the description of this utility model, 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 utility model 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 utility model.

[0031] Example 1

[0032] See Figures 1-5 A coal chemical PSA gas separation device includes a processing tower 1. The processing tower 1 is equipped with a flow divider 11. The upper end of the flow divider 11 has a plurality of flow divider holes 12 distributed through it, and the lower end of the flow divider 11 has an air inlet 13. When gas enters the flow divider 11, it enters the flow divider 11 through the air inlet 13 and then exits through each flow divider hole 12 and moves evenly to the position of the adsorption layer 21.

[0033] A positioning bearing 14 is fixedly installed at the bottom of the internal part of the treatment tower 1. A shaft 15 is interference-fitted on the inner ring wall of the positioning bearing 14. An installation sleeve 16 is fixedly sleeved on the surface of the shaft 15. Several turbulence blades 17 are distributed and fixed on the outer ring wall of the installation sleeve 16. When the shaft 15 rotates, it can drive the turbulence blades 17 to rotate, so that the gas entering can move upward in a ring at the air inlet 13.

[0034] A second shaft 18 is welded and fixed to the upper end of the first shaft 15. Several turbulence rods 19 are fixedly distributed on the surface of the second shaft 18. The second shaft 18 can be linked based on the rotation of the first shaft 15, so that the turbulence rods 19 can turbulently turbulent the gas when it enters the interior of the diversion hood 11, so that the gas can be more dispersed when it passes through the diversion hole 12.

[0035] Inside the treatment tower 1, mesh plates 2 are fixedly arranged vertically. There is a gap between two adjacent mesh plates 2, and the gap is filled with an adsorption layer 21. The adsorption layer 21 is made of activated carbon granules. The mesh plates 2 arranged vertically can cover the adsorption layer 21 and limit its storage area. The adsorption layer 21 can serve as an adsorption bed structure for gas separation.

[0036] It should be further explained that a sealed bearing 1001 is fixedly installed through the surface of the processing tower 1. A drive shaft 1002 is interference-fitted on the inner ring wall of the sealed bearing 1001. A motor 1003 is installed at the outer end of the drive shaft 1002. The outer ring wall of the motor 1003 is fixedly installed on the surface of the processing tower 1 by a bracket. A drive shaft is installed inside the motor 1003. The end of the drive shaft is fixedly connected to the end of the drive shaft 1002 by a coupling. Driven by the motor 1003, the drive shaft 1002 can be rotated, thereby driving the rotation of the bevel gear 1004.

[0037] It should be further explained that a drive bevel gear 1004 is fixedly installed at the end of the drive shaft 1002 away from the motor 1003, and a linkage bevel gear 1005 is fixedly sleeved on the surface of the shaft 15. The linkage bevel gear 1005 and the drive bevel gear 1004 are meshed with each other. By rotating the drive bevel gear 1004, it meshes with the linkage bevel gear 1005 and rotates, thereby realizing the stable rotation of the shaft 15 based on the positioning bearing 14.

[0038] It should be further noted that an inner sleeve 3 is fixedly installed through the upper end of one side of the processing tower 1, and a pressure gauge 31 is fixedly installed through the inside of the inner sleeve 3. The pressure gauge 31 can play the role of pressure detection when pressurization is required in the processing tower 1 before gas separation.

[0039] It should be further noted that a pressurization port 32 is fixed through the side of the treatment tower 1 away from the pressure gauge 31. A valve 33 is provided on the surface of the pressurization port 32. The valve core of the valve 33 is embedded inside the pressurization port 32. The valve 33 can stably seal the pressurization port 32 after pressurization is completed.

[0040] It should be further noted that an air pump 34 is fixedly installed on the surface of the treatment tower 1 by a bracket. The outlet flange of the air pump 34 is connected to a pipe 35. The end of the pipe 35 away from the air pump 34 is installed with the end flange of the pressurization interface 32. The air pump 34 has an air intake effect and can stably pressurize the inside of the treatment tower 1.

[0041] It should be further explained that a secondary raw material gas interface 4 is provided at the lower end of the pressurization interface 32, which is fixed to the processing tower 1. A valve 41 is provided on the surface of the secondary raw material gas interface 4. The valve core of the valve 41 is embedded inside the secondary raw material gas interface 4. By removing the primary product gas regulating valve connected to the secondary raw material gas interface 4 itself and exposing it, the primary raw material product gas can be used directly through an external pipe. This can ensure that the raw material gas of the secondary PSA has higher purity, thereby improving the separation effect of the secondary PSA. By directly using the product gas of the primary PSA, impurities introduced in the intermediate links can be reduced, and the operating efficiency and product quality of the secondary PSA can be improved.

[0042] It should be further explained that a frame 42 is slidably fitted on the inner wall of the secondary raw material gas interface 4, and a filter screen 43 is embedded and fixed on the inner side of the frame 42. A limiting block 44 is fixedly installed on the inner wall of the secondary raw material gas interface 4. The inward side of the frame 42 is attached to the surface of the limiting block 44, and a knob 45 is fixed on the side of the frame 42 away from the limiting block 44. When air enters at the secondary raw material gas interface 4, auxiliary impurities can be filtered to improve gas accuracy.

[0043] It should be further explained that the outer ring wall of the frame 42 is provided with an external thread 46, and the inner wall of the secondary raw material gas interface 4 is provided with an internal thread 47. The external thread 46 and the internal thread 47 are threaded together. Through the cooperation of the internal thread 47 and the external thread 46, the disassembly of the frame 42 and the secondary raw material gas interface 4 can be avoided, thereby facilitating the periodic cleaning or replacement of the filter screen 43.

[0044] It should be further explained that a top plate 5 is installed on the top of the treatment tower 1, and an exhaust port 51 is fixed through the center of the top plate 5. A valve 52 is provided on the surface of the exhaust port 51, and the valve core of the valve 52 is embedded inside the exhaust port 51, which facilitates the discharge of gas after gas separation.

[0045] Working principle: When the raw gas enters the diversion hood 11 from the inlet 13 at the bottom of the processing tower 1, the gas first forms a swirling flow through the turbulence blades 17 driven by shaft 15, so that the gas achieves a uniform annular distribution during the inlet stage. After the gas enters the diversion hood 11, the turbulence rods 19 on shaft 2 further disrupt the airflow direction, forming a turbulence effect, which promotes the gas to be more evenly dispersed at the diversion hole 12. This multi-stage turbulence design effectively avoids the gas from forming a bias or short circuit in the adsorption layer 21, ensuring that the gas is in full contact with the activated carbon adsorption layer 21. When the dispersed gas passes through the adsorption layer 21 between the upper and lower mesh plates 2, the activated carbon particles selectively adsorb impurities (such as CO2, CH4, etc.), while the unadsorbed target gas (such as H2) continues to flow upward. The synergistic effect of the diversion hood 11 and the turbulence structure significantly improves the utilization rate and separation accuracy of the adsorption bed.

[0046] The motor 1003 drives the drive bevel gear 1004 to rotate via the drive shaft 1002, and the linkage bevel gear 1005 meshing with it rotates synchronously. The drive shaft 15 rotates stably under the support of the positioning bearing 14. The rotation of the shaft 15 is transmitted to the turbulence blade 17 through the mounting sleeve 16, so that a continuously rotating airflow field is formed at the air inlet 13, which improves the dispersion of the air inlet position. At the same time, the shaft 18 drives the turbulence rod 19 to turbulently move at high speed in the flow divider 11, which disrupts the laminar flow state of the airflow and increases the collision frequency of the gas with the flow divider hole 12.

[0047] Before the primary PSA product gas enters the treatment tower 1 through the secondary raw material gas interface 4, it must pass through the filter screen 43 to intercept residual particulate matter. The knob 45 is designed to facilitate periodic disassembly and cleaning of the filter screen 43. Valve 2 41 controls the opening and closing of the air intake, while the threaded frame 42 (with external thread 46 and internal thread 47 mating) ensures the sealing of the filter screen 43. At the same time, the air pump 34 injects gas into the pressurization interface 32 through the pipeline 35. The pressure gauge 31 monitors the pressure inside the tower in real time. Valve 1 33 closes the treatment tower 1 after pressurization. The high-pressure environment can improve the adsorption capacity of activated carbon for impurities, while the direct utilization of the primary product gas (bypassing the intermediate storage link) reduces the risk of impurity introduction. The exhaust interface 51 of the top plate 5 opens after separation, and valve 3 52 regulates the emission rate of the target gas (such as high-purity H2). This process, through the combination of pressure regulation and secondary purification, significantly improves the purity and recovery rate of the final product.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coal chemical PSA gas separation device, comprising a processing tower (1), characterized in that: The processing tower (1) is equipped with a flow divider (11) inside. The upper end of the flow divider (11) is provided with a number of flow divider holes (12) and the lower end of the flow divider (11) is provided with an air inlet (13). The bottom of the processing tower (1) is fixedly installed with a positioning bearing (14). The inner ring wall of the positioning bearing (14) is press-fitted with a shaft (15). The surface of the shaft (15) is fixedly sleeved with an installation sleeve (16). Several turbulence blades (17) are distributed and fixed on the outer ring wall of the installation sleeve (16). The upper end of the first shaft (15) is welded and fixed with the second shaft (18), and a number of baffle rods (19) are fixedly distributed on the surface of the second shaft (18). The processing tower (1) has mesh plates (2) fixedly arranged vertically inside. There is a gap between two adjacent mesh plates (2), and the gap is filled with an adsorption layer (21). The adsorption layer (21) is made of activated carbon granules.

2. The coal chemical PSA gas separation device according to claim 1, characterized in that: A sealed bearing (1001) is fixedly installed through the surface of the processing tower (1). A drive shaft (1002) is interference-fitted on the inner ring wall of the sealed bearing (1001). A motor (1003) is installed at the outer end of the drive shaft (1002). The outer ring wall of the motor (1003) is fixedly installed on the surface of the processing tower (1) by a bracket. A drive shaft is installed inside the motor (1003). The end of the drive shaft is fixedly connected to the end of the drive shaft (1002) by a coupling.

3. A coal chemical PSA gas separation device according to claim 2, characterized in that: A drive bevel gear (1004) is fixedly installed at one end of the drive shaft (1002) away from the motor (1003), and a linkage bevel gear (1005) is fixedly sleeved on the surface of the shaft (15), with the linkage bevel gear (1005) and the drive bevel gear (1004) meshing with each other.

4. The coal chemical PSA gas separation device according to claim 3, characterized in that: An inner sleeve (3) is fixed through the upper end of one side of the processing tower (1), and a pressure gauge (31) is fixed through the inside of the inner sleeve (3).

5. A coal chemical PSA gas separation device according to claim 4, characterized in that: The processing tower (1) has a pressurization port (32) fixed through it on the side away from the pressure gauge (31). A valve (33) is provided on the surface of the pressurization port (32), and the valve core of the valve (33) is embedded inside the pressurization port (32).

6. A coal chemical PSA gas separation device according to claim 5, characterized in that: An air pump (34) is fixedly installed on the surface of the processing tower (1) by a bracket. The outlet flange of the air pump (34) is connected to a pipe (35). The end of the pipe (35) away from the air pump (34) is installed with the end flange of the pressurization interface (32).

7. A coal chemical PSA gas separation device according to claim 6, characterized in that: A secondary raw material gas interface (4) is provided at the lower end of the pressurization interface (32) and is fixed to the processing tower (1). A valve (41) is provided on the surface of the secondary raw material gas interface (4), and the valve core of the valve (41) is embedded inside the secondary raw material gas interface (4).

8. A coal chemical PSA gas separation device according to claim 7, characterized in that: A frame (42) is slidably attached to the inner wall of the secondary raw material gas interface (4). A filter screen (43) is embedded and fixed inside the frame (42). A limiting block (44) is fixedly installed on the inner wall of the secondary raw material gas interface (4). The inward side of the frame (42) is attached to the surface of the limiting block (44). A knob (45) is fixed on the side of the frame (42) away from the limiting block (44).

9. A coal chemical PSA gas separation device according to claim 8, characterized in that: The outer ring wall of the frame (42) is provided with an external thread (46), and the inner wall of the secondary raw material gas interface (4) is provided with an internal thread (47). The external thread (46) and the internal thread (47) are threaded together.

10. A coal chemical PSA gas separation device according to claim 9, characterized in that: The top of the processing tower (1) is equipped with a top plate (5), and an exhaust port (51) is fixed through the center of the top plate (5). A valve three (52) is provided on the surface of the exhaust port (51), and the valve core of the valve three (52) is embedded inside the exhaust port (51).

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