Purification equipment for hydrogen production based on catalytic cracking of natural gas

Abstract

The invention discloses purification equipment based on natural gas catalytic cracking hydrogen production, and relates to the technical field of hydrogen purification, the purification equipment based on natural gas catalytic cracking hydrogen production comprises a separator, the bottom end of the separator is communicated with a filter pipe, the bottom end of the filter pipe is communicated with a first feeding pipe, the top end of the separator is communicated with a first discharging pipe, and the top end of the separator is communicated with a second discharging pipe; a second discharging pipe communicates with the outer surface of the separator, a cleaning box is fixedly connected to the outer surface of the separator, a fixing block is rotatably connected to the interior of the cleaning box, and a membrane is detachably connected to the interior of a mounting groove formed in the surface of the fixing block. According to the utility model, the hydrogen purification efficiency is improved, the membrane blockage or pollution caused by incomplete filtration is avoided, the production interruption caused by saturated adsorption is avoided, and the continuity of the purification process is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen purification, and in particular to a purification device based on catalytic cracking of natural gas to produce hydrogen. Background Art

[0002] Hydrogen is a colorless, odorless, non-toxic gas that is widely used in many industries such as industry, aerospace and aviation, laboratories, and medical care. During storage and transportation, hydrogen is usually compressed and stored in hydrogen storage tanks. Hydrogen storage tanks are usually made of high-strength materials such as carbon fiber and aluminum alloy to withstand high pressure and low temperature environments. They have a high degree of safety and sealing, which is crucial to ensuring the safe storage and effective use of hydrogen.

[0003] In industrial production processes, hydrogen is often extracted from fossil fuels (such as natural gas) or water (through electrolysis). The extracted hydrogen is usually mixed with other gases. In order to ensure the safe, efficient and reliable use of hydrogen in various applications and to meet specific application requirements, it is necessary to extract hydrogen from the mixed gas containing hydrogen and improve the purity of hydrogen.

[0004] However, the existing hydrogen purification equipment may encounter the following problems during use: When natural gas catalytic cracking is used to produce hydrogen, the pretreated natural gas enters the catalytic cracking reactor. Under the action of high temperature and catalyst, the methane (CH4) in the natural gas is cracked into hydrogen (H2) and carbon (C) or carbon black. The product after the natural gas cracking needs to be pretreated before entering the membrane separation system to remove solid particles and substances that may clog the membrane pores. In the existing pretreatment, filters, adsorbents and other methods are usually used. When adsorbents (activated carbon, molecular sieves or other special adsorption materials) are used to remove solid particles and substances that may clog the membrane pores in the gas, after a period of use, a large amount of solid particles and substances that may clog the membrane pores will gradually deposit on the surface of the adsorbent, and the adsorbent gradually reaches an oversaturated state, so that the adsorption and filtration effect will gradually decrease, so that the solid particles and substances that may clog the membrane pores in the natural gas cracking products are not filtered out completely; After these substances that have not been thoroughly filtered enter the membrane separation system, they will accumulate on the membrane surface or in the membrane pores, causing membrane pollution, reducing the membrane's permeability and selectivity, and affecting the purity and output of hydrogen. Membrane pollution will accelerate the aging of the membrane, causing the mechanical strength of the membrane to decrease, increasing the frequency of membrane replacement and maintenance costs, and also causing the stability of the membrane separation system for gas purification and separation, affecting the continuity and reliability of hydrogen production. At the same time, these substances accumulate on the membrane surface or in the membrane pores, causing membrane blockage, which will interfere with the membrane's hydrogen separation process and reduce the hydrogen purification efficiency.

[0005] Therefore, the present invention proposes a purification device based on catalytic cracking of natural gas to produce hydrogen, so as to make up for and improve the shortcomings of the prior art. Summary of the invention

[0006] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a purification device for producing hydrogen based on catalytic cracking of natural gas, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a purification device based on catalytic cracking of natural gas to produce hydrogen, including a separator, the bottom end of the separator is connected to a filter tube, the bottom end of the filter tube is connected to a feed pipe one, the top of the separator is connected to a discharge pipe one, the outer surface of the separator is connected to a discharge pipe two, the outer surface of the separator is fixedly connected to a cleaning box, the interior of the cleaning box is rotatably connected to a fixed block, the fixed block is slidably connected to the separator, the upper surface of the fixed block is penetrated by a mounting groove, the mounting groove on the surface of the fixed block is detachably connected to a diaphragm, and the diaphragms are distributed in a circular array with the center point of the cleaning box as a reference.

[0008] Preferably, the lower surface of the fixed block is fixedly connected with a connecting shaft, the end of the connecting shaft away from the fixed block is fixedly connected with a slot disk, the upper surface of the slot disk is evenly provided with radial grooves, the interior of the cleaning box is rotatably connected with a dial, the surface of the dial is fixedly connected with a round pin, and the round pin can be slidably connected to the slot disk through the radial groove.

[0009] Preferably, the upper surface of the cleaning box is fixedly connected to a liquid storage tank, the lower surface of the liquid storage tank is evenly penetrated with spray holes, the liquid storage tank is connected to the cleaning box through the spray holes, and the upper surface of the liquid storage tank is connected to a water inlet pipe.

[0010] Preferably, a magnetic block 1 is fixedly connected to the upper surface of the fixed block, and the magnetic block 1 is distributed in a circular array with the center point of the cleaning box as a reference. A sliding rod is slidably connected to the upper surface of the cleaning box, and the bottom end of the sliding rod passes through the cleaning box and extends to the inside of the cleaning box. One end of the sliding rod extending to the inside of the cleaning box is fixedly connected to a magnetic block 2. A spring is fixedly connected to the upper surface of the cleaning box, and the spring is sleeved on the outer surface of the sliding rod. The spring is fixedly connected to the sliding rod, and the top end of the sliding rod extends to the inside of the water inlet pipe.

[0011] Preferably, the filter tube is internally rotatably connected to an adsorption box, a feed port is provided on the outer surface of the adsorption box, the outer surface of the filter tube is connected to a second feed pipe, the feed port and one end of the second feed pipe connected to the filter tube are located in the same horizontal section, one end of the second feed pipe away from the filter tube is connected to a storage box, the storage box is fixedly connected to the separator, the adsorption box is provided on the outer surface of the adsorption box, the outer surface of the filter tube is connected to a third discharge pipe, the discharge port and one end of the third discharge pipe connected to the filter tube are located in the same horizontal section.

[0012] Preferably, the bottom of the adsorption box is configured as an inclined surface, and a side of the bottom of the adsorption box close to the discharge port is lower than a side close to the feed port.

[0013] Preferably, an impeller is rotatably connected inside the filter tube, a bump is coaxially fixedly connected to one side of the impeller close to the adsorption box, and a push rod is evenly fixedly connected to the lower surface of the adsorption box.

[0014] Preferably, the center point of the impeller and the center points of the plurality of push rods are not located in the same vertical section, and the protrusions and the push rods are located in the same horizontal section.

[0015] (III) Beneficial effects The present invention provides a purification device based on catalytic cracking of natural gas to produce hydrogen, which has the following beneficial effects: 1. By making the center point of the impeller and the center points of multiple push rods not in the same vertical section, the protrusion and the push rod are located in the same horizontal section. When in use, when the mixed gas after catalytic cracking of natural gas is transported into the filter tube through the feed pipe 1 and passes through the impeller, the airflow will generate a tangential driving force on the blades inside the impeller, and then drive the protrusion to rotate through the impeller. When the protrusion rotates, it pushes the adsorption box to rotate through the push rod. Since the bottom of the adsorption box is set as an inclined surface, and the side close to the discharge port is lower than the side close to the feed port, when the adsorption box rotates until the discharge port opened on the surface overlaps with the discharge pipe 3 area, and the feed port overlaps with the feed pipe 2 area, the used adsorbent can flow out of the adsorption box through the discharge port and the discharge pipe 3, and the adsorbent inside the storage box can pass through the feed pipe 2 through the feed pipe The material inlet enters the adsorption box, and the used adsorbent in the adsorption box is automatically replaced to avoid incomplete filtration due to the adsorbent in the adsorption box not being replaced and the adsorption capacity being greatly reduced. By regularly replacing the adsorbent in the adsorption box, the adsorbent in the adsorption box can maintain a constant adsorption efficiency, so that the adsorbent in the adsorption box can continuously and efficiently filter out solid particles in the natural gas catalytic cracking products and substances that may clog the membrane pores during use, thereby improving the purification efficiency of hydrogen, avoiding clogging or contamination of the membrane due to incomplete filtration of solid particles and substances that may clog the membrane pores, reducing damage to the membrane, extending its service life, and avoiding production interruptions due to adsorbent saturation, ensuring the continuity of the purification process, and improving the stability of system operation.

[0016] 2. Through the spray hole opened on the lower surface of the liquid storage tank, when in use, when the fixed block drives the diaphragm and the magnetic block 1 to rotate to the bottom of the liquid storage tank, the magnetic block 1 drives the slide bar to move downward through the magnetism between the magnetic block 2 connected to the slide bar. After the slide bar moves downward, it no longer pushes the valve seat of the elastic seat inside the water pipe to close the valve. When the valve seat is not pushed by the slide bar, the elastic seat connected to the valve seat automatically rebounds to restore its original state, and the valve opens. At this time, water is transported to the inside of the liquid storage tank through the water inlet pipe, and then sprayed to the upper surface of the diaphragm through the spray hole, so as to reversely flush the diaphragm and clean the membrane through the reverse water flow. Solid particles accumulated in the pores of the membrane and substances that clog the membrane pores can be removed, the permeability and selectivity of the membrane can be restored, and the reduction in production efficiency caused by membrane blockage can be reduced, thereby improving the stability and reliability of the membrane separation system and ensuring the continuity and quality of hydrogen production. Compared with cleaning in the normal water flow direction, reverse cleaning flushes water from the top of the membrane to the bottom of the membrane in a countercurrent manner, which can more conveniently flush the solid particles accumulated in the pores of the membrane and substances that clog the membrane pores away from the membrane. At the same time, it can avoid damage to the membrane caused by disassembly and cleaning, as well as pollution of the membrane by the external environment, which affects the purification and separation of hydrogen by the membrane.

[0017] 3. By distributing the membranes in a circular array with the center point of the cleaning box as a reference, when one of the membranes needs to be cleaned after being used for a period of time, the other membranes can continue to work without affecting the operation of the entire system, ensuring the continuity of production, reducing downtime, and improving the efficiency of hydrogen purification. At the same time, multiple membranes can also disperse the processing load of hydrogen, reduce the pressure of continuous processing of a single membrane, and avoid the reduction of membrane flux and poor selectivity due to too long a single use cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the cutaway structure of the main body of the present invention; Figure 3 For the present invention Figure 2 A is an enlarged cross-sectional structural diagram; Figure 4 It is a schematic diagram of the partial cutaway structure of the filter tube and the cleaning box of the present invention; Figure 5 It is a schematic diagram of the cutaway structure of the liquid storage tank of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of B; Figure 7 It is a schematic diagram of the local structure of the filter tube and the adsorption box of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the adsorption box of the present invention when viewed from above.

[0019] The numbers in the figure represent: 1. Separator; 2. Filter tube; 3. Feed pipe 1; 4. Discharge pipe 1; 5. Discharge pipe 2; 6. Cleaning box; 7. Fixed block; 8. Diaphragm; 9. Connecting shaft; 10. Slot plate; 11. Dial; 12. Round pin; 13. Liquid storage tank; 14. Spray hole; 15. Water inlet pipe; 16. Magnetic block 1; 17. Slide bar; 18. Magnetic block 2; 19. Spring; 20. Adsorption box; 21. Feed port; 22. Feed pipe 2; 23. Storage box; 24. Discharge port; 25. Discharge pipe 3; 26. Impeller; 27. Bump; 28. Push rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] refer to Figures 1 to 8 According to a preferred embodiment of the present invention, a purification device based on catalytic cracking of natural gas for hydrogen production will be described in detail below. A purification device based on catalytic cracking of natural gas for hydrogen production includes a separator 1. A booster pump is installed inside the separator 1 and below the diaphragm 8 to ensure that the pressure on the feed side is high enough to promote the permeation of hydrogen. The bottom end of the separator 1 is connected to a filter tube 2, and the bottom end of the filter tube 2 is connected to a feed pipe 3, which is connected to a pipeline for conveying the product after cracking of natural gas. The top of the separator 1 is connected to a discharge pipe 4, which is connected to a hydrogen collection container. The outer surface of the separator 1 is connected to a discharge pipe 5, which is connected to a non-permeated gas collection container. The outer surface of the separator 1 is fixedly connected to a clean A washing box 6 is provided with a fixed block 7 which is rotatably connected inside the washing box 6. The fixed block 7 is slidably connected to the separator 1. A mounting groove is provided through the upper surface of the fixed block 7. A diaphragm 8 is detachably connected to the mounting groove on the surface of the fixed block 7. The diaphragms 8 are distributed in a circular array with the center point of the washing box 6 as a reference. When in use, when one of the diaphragms 8 needs to be cleaned after being used for a period of time, the other diaphragms 8 can continue to work without affecting the operation of the entire system, ensuring the continuity of production, reducing downtime, and improving the efficiency of hydrogen purification. At the same time, multiple diaphragms 8 can also disperse the processing load of hydrogen, reduce the pressure of continuous processing of a single diaphragm 8, and avoid the reduction of flux and poor selectivity of the diaphragm 8 due to a single long use cycle.

[0022] A connecting shaft 9 is fixedly connected to the lower surface of the fixed block 7, and a groove disk 10 is fixedly connected to the end of the connecting shaft 9 away from the fixed block 7. The upper surface of the groove disk 10 is evenly provided with radial grooves. A dial 11 is rotatably connected to the inside of the cleaning box 6. The dial 11 is connected to the driving device. Under the control of the control device, the driving device regularly drives the dial 11 to rotate. A round pin 12 is fixedly connected to the surface of the dial 11, and the round pin 12 can be slidably connected to the groove disk 10 through the radial groove.

[0023] The upper surface of the cleaning box 6 is fixedly connected to a liquid storage tank 13, and the lower surface of the liquid storage tank 13 is evenly penetrated with spray holes 14. The liquid storage tank 13 is connected to the cleaning box 6 through the spray holes 14. The upper surface of the liquid storage tank 13 is connected to a water inlet pipe 15, and an elastic seat closing valve is arranged inside the water inlet pipe 15. The principle is to use an elastic valve seat to realize the opening and closing of the valve.

[0024] A magnetic block 16 is fixedly connected to the upper surface of the fixed block 7. The magnetic blocks 16 are distributed in a circular array with the center point of the cleaning box 6 as a reference. A sliding rod 17 is slidably connected to the upper surface of the cleaning box 6. The bottom end of the sliding rod 17 penetrates the cleaning box 6 and extends to the inside of the cleaning box 6. One end of the sliding rod 17 extending to the inside of the cleaning box 6 is fixedly connected to a magnetic block 2 18. The north pole (N pole) of the magnetic block 16 is located on the side close to the sliding rod 17, and the south pole (S pole) of the magnetic block 2 18 is located on the side close to the fixed block 7. When different magnetic poles of the two magnetic blocks are close to each other, since the magnetic field lines of different magnetic poles converge inward in space, when the north pole of one magnetic block is close to the south pole of the other magnetic block, their magnetic field lines will attract each other, thereby causing an attractive force between the two magnetic blocks. A spring 19 is fixedly connected to the upper surface of the cleaning box 6 , and the spring 19 is sleeved on the outer surface of the slide rod 17 . The spring 19 is fixedly connected to the slide rod 17 , and the spring 19 drives the slide rod 17 to reset. The top end of the slide rod 17 extends to the inside of the water inlet pipe 15 .

[0025] The filter tube 2 is internally rotatably connected with an adsorption box 20, and a feed port 21 is provided on the outer surface of the adsorption box 20. The outer surface of the filter tube 2 is connected with a feed pipe 22. The feed port 21 and the end of the feed pipe 22 connected with the filter tube 2 are located in the same horizontal section. The end of the feed pipe 22 away from the filter tube 2 is connected with a storage box 23. The storage box 23 is fixedly connected to the separator 1. A discharge port 24 is provided on the outer surface of the adsorption box 20. The outer surface of the filter tube 2 is connected with a discharge pipe 3 25. The discharge port 24 and the end of the discharge pipe 3 25 connected with the filter tube 2 are located in the same horizontal section.

[0026] The bottom of the adsorption box 20 is configured as an inclined surface, and a side of the bottom of the adsorption box 20 close to the discharge port 24 is lower than a side close to the feed port 21 .

[0027] An impeller 26 is rotatably connected inside the filter tube 2 , a bump 27 is coaxially fixedly connected to one side of the impeller 26 close to the adsorption box 20 , and a push rod 28 is evenly fixedly connected to the lower surface of the adsorption box 20 .

[0028] The center point of the impeller 26 and the center points of the plurality of push rods 28 are not located in the same vertical section plane, and the protrusion 27 and the push rods 28 are located in the same horizontal section plane.

[0029] The following is the entire working process and working principle of the above embodiment: Before use, the raw natural gas is pretreated to remove harmful impurities such as sulfur, and then preheated through a heat exchanger. The preheated natural gas is sent to a cracking reactor, where a cracking reaction occurs under the action of high temperature and a catalyst. The methane (CH4) in the natural gas is cracked into hydrogen (H2) and carbon (C) or carbon black.

[0030] When in use, first, the product after catalytic cracking of natural gas is transported to the inside of the filter tube 2 through the transport pipeline via the feed pipe 3. When the gas is transported to the inside of the filter tube 2 and passes through the adsorption box 20, the adsorbent inside the adsorption box 20 adsorbs the solid particles contained therein and the substances that may clog the membrane pores, so as to prevent the substances from entering the membrane separation system and accumulating in the membrane pores of the membrane 8, causing contamination of the membrane 8, reducing the permeability and selectivity of the membrane 8, and affecting the purity and yield of the hydrogen.

[0031] Next, when the gas is transported to the inside of the filter tube 2 and passes through the impeller 26, the airflow will generate a tangential driving force on the blades inside the impeller 26, thereby driving the impeller 26 to rotate inside the filter tube 2. When the impeller 26 rotates, it drives the protrusion 27 fixedly connected to the impeller 26 to rotate. Since the center point of the impeller 26 and the center point of the plurality of push rods 28 are not in the same vertical section, the protrusion 27 and the push rod 28 are located in the same horizontal section. Therefore, when the protrusion 27 rotates, it can drive the adsorption box 20 connected thereto to rotate by pushing the push rod 28 closest to the center line of the filter tube 2. Since the bottom of the adsorption box 20 is set as an inclined surface, and the side close to the discharge port 24 is lower than the side close to the feed port 21, therefore, when the adsorption box 20 rotates to the point where the discharge port 24 opened on the surface and the discharge pipe three 25 are connected to the filter tube 2 and the area of ​​the feed port 21 and the feed pipe two 22 are connected to the filter tube 2 overlap, the used adsorbent can pass through the discharge port 24 through the discharge port The feed pipe three 25 flows out from the inside of the adsorption box 20, and the adsorbent in the storage box 23 can enter the adsorption box 20 through the feed pipe two 22 via the feed port 21, and the adsorbent in the adsorption box 20 after use is automatically replaced to avoid incomplete filtration due to the adsorbent in the adsorption box 20 not being replaced and the adsorption capacity being greatly reduced. By regularly replacing the adsorbent in the adsorption box 20, the adsorbent in the adsorption box 20 can maintain a constant adsorption efficiency, so that the adsorbent in the adsorption box 20 can continuously and efficiently filter out solid particles and substances that may clog the membrane pores in the natural gas catalytic cracking products during use, thereby improving the purification efficiency of hydrogen, avoiding blockage or contamination of the diaphragm 8 due to incomplete filtration of solid particles and substances that may clog the membrane pores, reducing damage to the diaphragm 8, extending its service life, and avoiding production interruptions due to adsorbent saturation, ensuring the continuity of the purification process, and improving the reliability of the system.

[0032] Secondly, the gas adsorbed by the adsorption box 20 enters the separator 1 connected to the filter tube 2, and is separated by the diaphragm 8 installed in the mounting groove of the fixed block 7. Due to the smaller molecular size and higher diffusion rate of hydrogen molecules, they can pass through the mold holes on the surface of the diaphragm 8 and penetrate to the top of the diaphragm 8, and then be collected in the hydrogen collection container through the discharge pipe 1 4, while other gas molecules (such as methane, nitrogen, carbon dioxide, etc.) are blocked and remain on the original side, and then are collected in the non-permeable gas collection container through the discharge pipe 2 5.

[0033] Finally, after the diaphragm 8 inside the separator 1 has been used for a period of time, the control device drives the dial 11 to rotate through the driving device. When the dial 11 rotates, it drives the round pin 12 fixedly connected to the dial 11 to rotate. When the round pin 12 rotates, it enters the radial groove opened on the surface of the groove plate 10. Then, the dial 11 drives the groove plate 10 to rotate through the round pin 12 entering the radial groove. When the groove plate 10 rotates, it drives the fixed block 7 fixedly connected thereto to rotate through the connecting shaft 9. When the fixed block 7 rotates, it drives the diaphragm 8 installed in the mounting groove opened on the surface of the fixed block 7 to rotate. When the fixed block 7 drives the diaphragm 8 that has been used for a period of time to rotate to the liquid storage tank 1 3, it also drives the magnetic block 16 fixedly connected to the fixed block 7 to rotate to the bottom of the slide bar 17. Since the north pole (N pole) of the magnetic block 16 is located on the side close to the slide bar 17, and the south pole (S pole) of the magnetic block 2 18 is located on the side close to the fixed block 7, and the magnetic field lines of different magnetic poles converge inward in space, when the north pole of one magnetic block is close to the south pole of another magnetic block, their magnetic field lines will attract each other, resulting in an attractive force between the two magnetic blocks. Therefore, when the fixed block 7 drives the magnetic block 16 to rotate to the bottom of the slide bar 17, the magnetic block 16 drives the slide bar through the attractive force between the magnetic block 2 18 fixedly connected to the slide bar 17. 17 moves downward. After the slide bar 17 moves downward, the spring 19 fixedly connected to the slide bar 17 is compressed. At the same time, the slide bar 17 no longer pushes the valve seat of the elastic seat inside the water pipe 15 to close the valve. When the valve seat is not subjected to the pushing force of the slide bar 17, the elastic seat connected to the valve seat automatically rebounds to restore its original state, and the valve is opened. At this time, the water for cleaning the diaphragm 8 can be transported to the inside of the liquid storage tank 13 through the water inlet pipe 15, and then sprayed to the upper surface of the diaphragm 8 through the spray hole 14. Since hydrogen penetrates from the bottom of the diaphragm 8 to the top of the diaphragm 8, water is sprayed from the upper surface of the diaphragm 8 through the spray hole 14 to reversely flush the diaphragm 8. The water flow is used to remove the solid particles accumulated in the pores of the diaphragm 8 and the substances that clog the pores, restore the permeability and selectivity of the diaphragm 8, and reduce the reduction in production efficiency caused by the blockage of the diaphragm 8, thereby improving the stability and reliability of the membrane separation system and ensuring the continuity and quality of hydrogen production. Compared with the cleaning in the normal water flow direction, the reverse cleaning flushes the water from the top of the diaphragm 8 to the bottom of the diaphragm 8 in the reverse flow, which can more conveniently flush the solid particles accumulated in the pores of the diaphragm 8 and the substances that clog the pores away from the diaphragm 8. At the same time, it avoids damage to the diaphragm 8 caused by disassembly and cleaning, and avoids the diaphragm 8 being contaminated by the external environment, which affects the purification and separation of hydrogen by the diaphragm 8.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A purification device based on catalytic cracking of natural gas to produce hydrogen, comprising a separator (1), the bottom end of the separator (1) is connected to a filter tube (2), the bottom end of the filter tube (2) is connected to a feed tube 1 (3), the top end of the separator (1) is connected to a discharge tube 1 (4), and the outer surface of the separator (1) is connected to a discharge tube 2 (5), characterized in that: The outer surface of the separator (1) is fixedly connected to a cleaning box (6), the interior of the cleaning box (6) is rotatably connected to a fixing block (7), the fixing block (7) is slidably connected to the separator (1), an installation groove is penetrated through the upper surface of the fixing block (7), a diaphragm (8) is detachably connected to the installation groove provided on the surface of the fixing block (7), and the diaphragms (8) are distributed in a circular array with the center point of the cleaning box (6) as a reference.

2. A purification device based on catalytic cracking of natural gas to produce hydrogen according to claim 1, characterized in that: The lower surface of the fixed block (7) is fixedly connected to a connecting shaft (9); one end of the connecting shaft (9) away from the fixed block (7) is fixedly connected to a slotted disc (10); the upper surface of the slotted disc (10) is evenly provided with radial grooves; the interior of the cleaning box (6) is rotatably connected to a dial (11); the surface of the dial (11) is fixedly connected to a round pin (12); and the round pin (12) can be slidably connected to the slotted disc (10) via the radial groove.

3. The purification equipment based on catalytic cracking of natural gas to produce hydrogen according to claim 1, characterized in that: The upper surface of the cleaning box (6) is fixedly connected to a liquid storage box (13), the lower surface of the liquid storage box (13) is evenly penetrated with spray holes (14), the liquid storage box (13) is connected to the cleaning box (6) through the spray holes (14), and the upper surface of the liquid storage box (13) is connected to a water inlet pipe (15).

4. The purification equipment for producing hydrogen by catalytic cracking of natural gas according to claim 1, characterized in that: The upper surface of the fixed block (7) is fixedly connected to a magnetic block 1 (16), and the magnetic blocks 1 (16) are distributed in a circular array with the center point of the cleaning box (6) as a reference. The upper surface of the cleaning box (6) is slidably connected to a sliding rod (17), and the bottom end of the sliding rod (17) passes through the cleaning box (6) and extends into the interior of the cleaning box (6). One end of the sliding rod (17) extending into the interior of the cleaning box (6) is fixedly connected to a magnetic block 2 (18). The upper surface of the cleaning box (6) is fixedly connected to a spring (19), and the spring (19) is sleeved on the outer surface of the sliding rod (17). The spring (19) is fixedly connected to the sliding rod (17), and the top end of the sliding rod (17) extends into the interior of the water inlet pipe (15).

5. The purification equipment for producing hydrogen by catalytic cracking of natural gas according to claim 1, characterized in that: The filter tube (2) is rotatably connected to an adsorption box (20) inside, the adsorption box (20) is provided with a feed port (21) on the outer surface, the filter tube (2) is connected to a second feed pipe (22) on the outer surface, the feed port (21) and the end of the second feed pipe (22) connected to the filter tube (2) are located on the same horizontal section, the end of the second feed pipe (22) away from the filter tube (2) is connected to a storage box (23), the storage box (23) is fixedly connected to the separator (1), the adsorption box (20) is provided with a discharge port (24) on the outer surface, the filter tube (2) is connected to a third discharge pipe (25), the discharge port (24) and the end of the third discharge pipe (25) connected to the filter tube (2) are located on the same horizontal section.

6. A purification device based on catalytic cracking of natural gas to produce hydrogen according to claim 5, characterized in that: The bottom of the adsorption box (20) is arranged as an inclined surface, and a side of the bottom of the adsorption box (20) close to the discharge port (24) is lower than a side close to the feed port (21).

7. The purification equipment for producing hydrogen by catalytic cracking of natural gas according to claim 5, characterized in that: An impeller (26) is rotatably connected inside the filter tube (2), a protrusion (27) is coaxially fixedly connected to a side of the impeller (26) close to the adsorption box (20), and a push rod (28) is evenly fixedly connected to the lower surface of the adsorption box (20).

8. The purification equipment for producing hydrogen by catalytic cracking of natural gas according to claim 7, characterized in that: The center point of the impeller (26) and the center points of the plurality of push rods (28) are not located on the same vertical section plane, and the protrusion (27) and the push rods (28) are located on the same horizontal section plane.

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