High-pressure gas purification device

Abstract

The invention provides a high-pressure gas purification device, and relates to the technical field of hydrogen production. The high-pressure gas purification device comprises a fixed rack and further comprises two gas collecting pipes and three drying assemblies, the gas collecting pipes and the drying assemblies are fixed to the fixed rack, each drying assembly comprises a cyclone mechanism, an air inlet mechanism, an inner pipe and an outer pipe, the air inlet mechanism is fixedly installed at the bottom of the cyclone mechanism, and the inner pipe is fixed to the air outlet end of the cyclone mechanism. According to the high-pressure gas purification device, by arranging the drying assembly, a molecular sieve is in a water absorption state when hydrogen is purified every time, the molecular sieve is treated by utilizing own resources, the purification efficiency of the hydrogen is improved, the wasted energy is reduced, and by arranging a cyclone mechanism and an inner pipe, the purification efficiency of the hydrogen is improved. The molecular sieves can be utilized to the greatest extent by eddy hydrogen, so that each molecular sieve absorbs water, the raw material hydrogen flowing through the inner pipe can be completely absorbed by the molecular sieves, and the water absorption efficiency of the molecular sieves is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production, in particular to a high-pressure gas purification device. Background Art

[0002] As the problem of global warming becomes more prominent, all countries have included green hydrogen in their energy strategic planning. At present, green hydrogen is mainly produced by electrolysis of water. Hydrogen produced by water electrolysis contains trace amounts of oxygen and a large amount of water vapor. In order to obtain high-purity hydrogen, the hydrogen produced by water electrolysis needs to be purified. After the hydrogen passes through the gas-liquid separator, most of the water in the hydrogen has been separated. However, in order to obtain higher-purity hydrogen, the hydrogen needs to be dried and further purified.

[0003] In traditional hydrogen purification systems, the deoxygenation component adopts a temperature-rising deoxygenation process. The deoxygenation tower is equipped with an electric heater to preheat the gas to the catalyst activity temperature. The power consumption is high and the cooling load of the gas after deoxygenation is large. The drying component adopts two modes, TSA (temperature swing adsorption) / TPSA (temperature swing pressure swing adsorption), a two-tower process, with activated alumina or silica gel as the adsorbent, and product gas or built-in nitrogen circulation regeneration. Each drying tower has a built-in electric heater to increase the regeneration gas temperature. The drying tower is large in size, and its operating flexibility is generally 50-110%.

[0004] However, after hydrogen is introduced into the traditional molecular sieve, the utilization efficiency of the molecular sieve is low and the water absorption effect is poor, or after a period of absorption, the water content inside the molecular sieve increases, and then the water absorption effect decreases linearly. In order to ensure the water absorption effect of the molecular sieve, it is traditionally necessary to heat it and then cool it. In this process, a large amount of energy is wasted, and the efficiency of hydrogen purification is further reduced.

[0005] The existing patent (202320661728.3) is a hydrogen purification molecular sieve adsorption structure, including a bottom plate, an adsorption tank is fixedly connected to the top of the bottom plate, an air inlet on the left top of the adsorption tank is connected to an air inlet pipe, an air pump is fixedly connected to the top of the bottom plate, the air inlet of the air pump is connected to the air outlet at the right bottom of the adsorption tank through an air outlet pipe, a mesh plate is fixedly connected inside the adsorption tank, the mesh plate is tilted downward from right to left, the left side of the inner cavity of the adsorption tank is connected to a discharge pipe located at the mesh plate, an electric valve 1 is arranged on the side of the discharge pipe, a fixed plate is fixedly connected to the right side of the adsorption tank, a support rod is fixedly connected to the top of the fixed plate, and a feed pipe is fixedly connected to the top of the support rod, and the molecular sieve particles in the storage box are transported to the adsorption tank by spiral conveying to complete the replacement. In the process of replacing the molecular sieve, it will neither affect the purification of hydrogen nor cause the gas to be purified to overflow into the outside air, causing a waste of resources.

[0006] In this solution, the used molecular sieve is quickly replaced, which can achieve continuous purification of hydrogen. However, the consumption of molecular sieve is large, and the removed molecular sieve still needs to be regenerated separately, which is more troublesome. Summary of the invention

[0007] In view of the deficiencies of the prior art, the present invention provides a high-pressure gas purification device to solve the problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-pressure gas purification device includes a fixed stand, two gas collecting pipes and three drying components, and the gas collecting pipes and the drying components are fixed on the fixed stand;

[0009] The drying assembly comprises a cyclone mechanism, an air inlet mechanism, an inner tube and an outer tube, wherein the air inlet mechanism is fixedly installed at the bottom of the cyclone mechanism, the inner tube is fixed on the air outlet end of the cyclone mechanism, a molecular sieve is arranged inside the inner tube, the outer tube is sleeved outside the inner tube, and the bottom end thereof is fixed to the outer ring of the cyclone mechanism, an exhaust cone is fixedly installed at the upper end of the inner tube, the upper end of the outer tube is a closed structure, the inner top wall of the outer tube is located above the exhaust cone, an inverted cone ring is arranged inside the upper end of the inner tube, a breathable plate is fixedly installed on the inverted cone ring in the inner tube, a positive cone ring is fixedly installed on the bottom of the breathable plate on the inverted cone ring, and the positive cone ring is concentric with the inverted cone ring;

[0010] The bottom end of the inner tube is sleeved with a heating coil, which is fixed on the cyclone mechanism. The lower end side of the outer tube is fixedly mounted with a main air pipe and a secondary air pipe, and a valve is installed in the secondary air pipe.

[0011] The main exhaust pipe and the auxiliary exhaust pipe are installed on the main air pipe, and valves are installed on the main exhaust pipe and the auxiliary exhaust pipe. The main exhaust pipe is connected to one of the air collecting pipes;

[0012] The air inlet mechanism includes a central main pipe, a main drying pipe, a secondary drying pipe and a cooling pipe, and valves are installed on the central main pipe, the main drying pipe, the secondary drying pipe and the cooling pipe. The central main pipe is connected to the cyclone mechanism, the main drying pipe, the secondary drying pipe and the cooling pipe are connected to the central main pipe, and the main drying pipe is connected to another air collecting pipe.

[0013] Any one of the auxiliary air pipes is connected to the cooling pipe of another drying component, and any one of the auxiliary exhaust pipes is connected to the auxiliary drying pipe of another drying component.

[0014] Preferably, the cyclone mechanism comprises an air blowing cone sleeve and an air receiving inner disk, the interior of the air blowing cone sleeve is a hollow structure, the lower end of which is connected to the central main pipe, the two are connected, the air receiving inner disk is fixed in the air blowing cone sleeve, the inner ring of the air blowing cone sleeve is fixedly installed with a plurality of high-pressure air blowing pipes, the high-pressure air blowing pipes are connected with the internal cavity of the air blowing cone sleeve, the high-pressure air blowing pipes are inclined, and the inclination angles are the same, a three-dimensional air guide cone is fixedly installed in the middle position of the inner bottom wall of the air receiving inner disk, and the outer ring of the three-dimensional air guide cone is provided with a plurality of threaded grooves;

[0015] The bottom end of the inner tube is fixed to the outer ring of the air receiving inner disk, and the bottom end of the outer tube is fixed to the outer ring of the air blowing cone sleeve.

[0016] Preferably, the tip of the blowing cone sleeve faces downward, and the inner cavity of the blowing cone sleeve is a cone-shaped structure.

[0017] Preferably, filter cotton is provided between the air permeable plate and the exhaust cone, a plurality of absorbent cottons are fixedly sleeved on the inner wall of the outer tube corresponding to the position of the heating ring, and the main air pipe and the auxiliary air pipe are both correspondingly installed under the lowest absorbent cotton.

[0018] Preferably, the exhaust cone is a conical structure with an exhaust hole in the center, the inverted cone ring is an annular structure with an inner hole in the middle, the diameter of the positive cone ring is smaller than the exhaust cone, a channel for exhaust is provided between the two, and the tips of the inverted cone ring and the positive cone ring are in opposite directions.

[0019] Preferably, the inner wall of the upper end of the outer tube is an arc-shaped structure, and the arc-shaped structure corresponds to the position of the exhaust hole of the exhaust cone, and a channel for exhaust is provided between the two.

[0020] Preferably, the main exhaust pipes are connected to the gas collecting pipes through finished hydrogen supply pipes, and the main drying pipes are connected to the gas collecting pipes through raw hydrogen supply pipes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The high-pressure gas purification device is provided with a drying component. The raw hydrogen first enters one of the drying components through the main drying pipe. After the molecular sieve inside the inner tube absorbs water, the dew point of the hydrogen can reach -70 degrees. Then it returns and passes through multiple absorbent cottons. Finally, 80% of the hydrogen is discharged through the main exhaust pipe to obtain product hydrogen. 20%% of the hydrogen enters the cooling pipe of the next drying component through the auxiliary air pipe. At this time, the heating coil inside this drying component has heated the molecular sieve inside the inner tube. The water adsorbed on the molecular sieve will be gradually desorbed. When the temperature of the upper part of the dryer reaches the interlocking limit, the hydrogen is discharged again. The production is completed, at this time 20% of the cold hydrogen enters from the bottom of the inner tube to cool the molecular sieve again, and then this part of the hydrogen passes through the auxiliary exhaust pipe of the drying component and enters the auxiliary drying pipe of the next drying component. After being dried, it is discharged from the main exhaust pipe of the drying mechanism, and then the raw hydrogen replaces the main drying pipe of the second drying component to enter, and the third raw hydrogen replaces the main drying pipe of the third drying component to enter. Finally, each time the hydrogen is purified, the molecular sieve is in a water-absorbing state, and its own resources are used to process the molecular sieve, thereby improving the purification efficiency of hydrogen and reducing wasted energy.

[0023] 2. The high-pressure gas purification device is provided with a cyclone mechanism and an inner tube. The hydrogen entering through the main drying tube, the auxiliary drying tube and the cooling tube will first enter the blowing cone sleeve through the central main tube, and then be blown to the gas receiving inner disk along the high-pressure blowing tube. The hydrogen entering the gas receiving inner disk will flow upward along the three-dimensional wind guide cone. The high-pressure blowing tube with a certain angle cooperates with the thread groove, so that the hydrogen entering the inner tube is in a vortex shape. The vortex-shaped hydrogen will blow from the bottom to the molecular sieve. The molecular sieve in the inner tube does not completely fill the inner tube, so that the vortex-shaped hydrogen will entrain the molecular sieve to move. The molecular sieve with more water absorption will move to the inner wall of the inner tube along the vortex, while the one with less water absorption will be in the middle of the vortex. The vortex hydrogen can maximize the use of the molecular sieve, so that each molecular sieve is water-absorbed, and the raw hydrogen flowing through the inner tube can completely absorb the water of the molecular sieve, thereby improving the water absorption efficiency of the molecular sieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a partial structural schematic diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the operation of the drying component of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the drying component of the present invention;

[0028] Figure 5 It is a structural cross-sectional view of the drying component of the present invention;

[0029] Figure 6 For the present invention Figure 5 A magnified view of the structure at center A;

[0030] Figure 7 For the present invention Figure 5 A magnified view of the structure at B in the middle;

[0031] Figure 8 For the present invention Figure 5 A magnified view of the structure at C in the middle;

[0032] Fig. 9 This is a partial structural exploded view of the drying component of the present invention;

[0033] Fig.10 It is a structural schematic diagram of the cyclone mechanism of the present invention.

[0034] In the figure:

[0035] 1. Fixed stand; 2. Gas collecting pipe; 3. Drying components;

[0036] 301. Cyclone mechanism;

[0037] 3011, blowing cone sleeve; 3012, air receiving inner plate; 3013, high-pressure blowing pipe; 3014, three-dimensional air guide cone; 3015, threaded groove;

[0038] 302. Air inlet mechanism;

[0039] 3021, central main pipe; 3022, main drying pipe; 3023, auxiliary drying pipe; 3024, cooling pipe;

[0040] 303, inner tube; 304, outer tube; 305, exhaust cone; 306, inverted cone ring; 307, breathable plate; 308, positive cone ring; 309, heating ring; 310, main air pipe; 311, auxiliary air pipe; 312, main exhaust pipe; 313, auxiliary exhaust pipe; 314, filter cotton; 315, absorbent cotton; 316, inner hole; 317, finished product hydrogen supply pipe; 318, raw material hydrogen supply pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0045] like Figure 1-10 As shown, the high-pressure gas purification device includes a fixed frame 1, two gas collecting pipes 2 and three drying components 3. The gas collecting pipes 2 and the drying components 3 are all fixed on the fixed frame 1.

[0046] The drying component 3 includes a cyclone mechanism 301, an air inlet mechanism 302, an inner tube 303 and an outer tube 304. The air inlet mechanism 302 is fixedly installed at the bottom of the cyclone mechanism 301, the inner tube 303 is fixed on the air outlet end of the cyclone mechanism 301, a molecular sieve is arranged in the inner tube 303, the outer tube 304 is sleeved outside the inner tube 303, and its bottom end is fixed to the outer ring of the cyclone mechanism 301, an exhaust cone 305 is fixedly installed on the upper end of the inner tube 303, the upper end of the outer tube 304 is a closed structure, the inner top wall of the outer tube 304 is above the exhaust cone 305, an inverted cone ring 306 is arranged in the upper end of the inner tube 303, an air permeable plate 307 is fixedly installed in the inner tube 303 on the inverted cone ring 306, and a positive cone ring 308 is fixedly installed on the bottom of the air permeable plate 307 on the inverted cone ring 306, and the positive cone ring 308 is concentric with the inverted cone ring 306.

[0047] The bottom end of the inner tube 303 is sleeved with a heating coil 309 which is fixed on the cyclone mechanism 301 . The lower end side of the outer tube 304 is fixedly mounted with a main air pipe 310 and a secondary air pipe 311 , and a valve is installed in the secondary air pipe 311 .

[0048] A main exhaust pipe 312 and a secondary exhaust pipe 313 are installed on the main air pipe 310 . Valves are installed on both the main exhaust pipe 312 and the secondary exhaust pipe 313 . The main exhaust pipe 312 is connected to one of the air collecting pipes 2 .

[0049] The air inlet mechanism 302 includes a central main pipe 3021, a main drying pipe 3022, a secondary drying pipe 3023 and a cooling pipe 3024. Valves are installed on the central main pipe 3021, the main drying pipe 3022, the secondary drying pipe 3023 and the cooling pipe 3024. The central main pipe 3021 is connected to the cyclone mechanism 301, the main drying pipe 3022, the secondary drying pipe 3023 and the cooling pipe 3024 are all connected to the central main pipe 3021, and the main drying pipe 3022 is connected to another air collecting pipe 2.

[0050] Any one of the auxiliary air pipes 311 is connected to the cooling pipe 3024 of another drying component 3 , and any one of the auxiliary exhaust pipes 313 is connected to the auxiliary drying pipe 3023 of another drying component 3 .

[0051] One of the gas collecting pipes 2 is connected to the raw hydrogen supply end. The raw hydrogen supplied in this process has passed through the deoxidizer, cooler and gas-liquid separator. Another gas collecting pipe 2 is connected to the finished hydrogen supply pipe 317. After simple filtration in the later stage, high-purity pure hydrogen can be obtained. An exhaust valve is provided at the upper end of the outer tube 304. If water vapor appears during the regeneration stage of the molecular sieve, the water vapor can be discharged in time through the exhaust valve. The heating coil 309 is heated by external power supply. The heating coil 309 can increase the temperature of the inner tube 303, thereby heating the molecular sieve through the inner tube 303;

[0052] The valves in any pipeline are electromagnetically controlled valves and are controlled by intelligent terminals. They can autonomously switch valves according to the flow process of hydrogen, thereby controlling the flow path of hydrogen. The valves can be opened and closed according to the program.

[0053] The cyclone mechanism 301 includes an air blowing cone sleeve 3011 and an air receiving inner disk 3012. The interior of the air blowing cone sleeve 3011 is a hollow structure, and its lower end is connected to the central main pipe 3021, and the two are connected. The air receiving inner disk 3012 is fixed in the air blowing cone sleeve 3011, and the inner ring of the air blowing cone sleeve 3011 is fixedly installed with a plurality of high-pressure air blowing pipes 3013. The high-pressure air blowing pipes 3013 are connected with the internal cavity of the air blowing cone sleeve 3011, and the high-pressure air blowing pipes 3013 are inclined with the same inclination angle. A three-dimensional air guide cone 3014 is fixedly installed in the middle position of the inner bottom wall of the air receiving inner disk 3012, and the outer ring of the three-dimensional air guide cone 3014 is provided with a plurality of threaded grooves 3015.

[0054] The bottom end of the inner tube 303 is fixed to the outer ring of the air receiving inner disk 3012 , and the bottom end of the outer tube 304 is fixed to the outer ring of the blowing cone sleeve 3011 .

[0055] One end of the high-pressure blowing pipe 3013 has a large inner diameter, and the end close to the air receiving inner disk 3012 has a smaller inner diameter. Therefore, when the raw hydrogen enters, the flow rate of the hydrogen will be accelerated after passing through the high-pressure blowing pipe 3013. The accelerated hydrogen can flow spirally upward along the shape of the three-dimensional air guide cone 3014 and the threaded groove 3015.

[0056] The tip of the blowing cone sleeve 3011 faces downward, and the inner cavity of the blowing cone sleeve 3011 is a cone structure.

[0057] The raw hydrogen gas entering from the bottom of the blowing cone sleeve 3011 can diffuse along the internal structure of the blowing cone sleeve 3011 , and the hydrogen gas diffused in one circle can pass through each high-pressure blowing pipe 3013 evenly.

[0058] A filter cotton 314 is provided between the air permeable plate 307 and the exhaust cone 305 , and a plurality of absorbent cottons 315 are fixedly sleeved on the inner wall of the outer tube 304 corresponding to the position of the heating ring 309 , and the main air pipe 310 and the auxiliary air pipe 311 are both correspondingly installed under the lowest absorbent cotton 315 .

[0059] The filter cotton 314 is made of low-temperature resistant absorbent cloth. After the hydrogen passes through the molecular sieve, the water content inside it is already low. The filter cotton 314 can process the hydrogen once again. The hydrogen processed by the filter cotton 314 will be processed once more by the absorbent cotton 315, so that the discharged hydrogen is basically free of water.

[0060] The exhaust cone 305 is a conical structure with an exhaust hole in the center. The inverted cone ring 306 is an annular structure with an inner hole 316 in the middle. The diameter of the positive cone ring 308 is smaller than the exhaust cone 305. A channel for exhaust is provided between the two. The tips of the inverted cone ring 306 and the positive cone ring 308 are in opposite directions.

[0061] The inverted cone ring 306 and the forward cone ring 308 are provided so that when the molecular sieve is vacated, it is difficult for the molecular sieve to pass over the forward cone ring 308 . The weight of the molecular sieve just matches the flow rate of hydrogen, so that the molecular sieve can be vacated to a certain height, but cannot escape into the outer tube 304 with the hydrogen.

[0062] The inner wall of the upper end of the outer tube 304 is an arc-shaped structure, which corresponds to the position of the exhaust hole of the exhaust cone 305, and a channel for exhaust is provided between the two.

[0063] The arc-shaped structure at the upper end of the outer tube 304 can facilitate airflow redirection.

[0064] The main exhaust pipes 312 are connected to the gas collecting pipe 2 through the finished hydrogen supply pipe 317, and the main drying pipes 3022 are connected to the gas collecting pipe 2 through the raw hydrogen supply pipe 318.

[0065] When using

[0066] First process: the raw hydrogen first enters one of the drying components 3 through the main drying pipe 3022. The hydrogen entering through the main drying pipe 3022, the auxiliary drying pipe 3023 and the cooling pipe 3024 will first enter the blowing cone sleeve 3011 through the central main pipe 3021, and then be blown to the air receiving inner plate 3012 along the high-pressure blowing pipe 3013. The hydrogen entering the air receiving inner plate 3012 will flow upward along the three-dimensional wind guide cone 3014. The high-pressure blowing pipe 3013 with a certain angle cooperates with the thread groove 3015, so that the hydrogen entering the inner tube 303 is in a vortex shape. The vortex-shaped hydrogen will blow from the bottom to the molecular sieve. The molecular sieve in the inner tube 303 does not completely fill the inner tube 303, so that the vortex-shaped hydrogen will entrain the molecular sieve to move. The molecular sieve with more water absorption will move to the inner wall of the inner tube 303 along the vortex, while the one with less water absorption will be in the middle of the vortex. The vortex hydrogen can be maximized. The molecular sieve is used for the decomposition. After the molecular sieve inside the inner tube 303 absorbs water, the dew point of hydrogen can reach -70 degrees. Then it returns and passes through multiple absorbent cottons 315. Finally, 80% of the hydrogen is discharged through the main exhaust pipe 312 to obtain product hydrogen. 20% of the hydrogen enters the cooling pipe 3024 of the second drying component 3 through the auxiliary air pipe 311. At this time, the heating coil 309 inside the second drying component 3 has heated the molecular sieve inside the inner tube 303. The moisture adsorbed on the molecular sieve will be gradually desorbed. When the temperature of the upper part of the dryer reaches the interlocking limit, the regeneration is completed. At this time, 20% of the cold hydrogen enters from the bottom of the inner tube 303 to cool the molecular sieve again. Then this part of the hydrogen passes through the auxiliary exhaust pipe 313 of the second drying component 3 and enters the auxiliary drying pipe 3023 of the third drying component 3. After being dried, it is discharged from the main exhaust pipe 312 of the third drying mechanism.

[0067] Second process: the raw hydrogen enters the main drying pipe 3022 of the second drying component 3, 80% of the hydrogen is discharged through the main exhaust pipe 312 to obtain the product hydrogen, and 20% of the hydrogen enters the cooling pipe 3024 of the third drying component 3 through the auxiliary air pipe 311 to cool the molecular sieve inside it. At this time, the heating coil 309 inside the third drying component 3 has heated the molecular sieve inside the inner tube 303, and the moisture adsorbed on the molecular sieve will be gradually desorbed. When the temperature of the upper part of the dryer reaches the interlocking limit, the regeneration is completed. At this time, 20% of the cold hydrogen enters from the bottom of the inner tube 303 to cool the molecular sieve again, and then this part of the hydrogen enters the auxiliary drying pipe 3023 of the first drying component 3 from the auxiliary exhaust pipe 313, and is discharged from the main exhaust pipe 312 of the first drying mechanism after being dried;

[0068] The third process: the raw hydrogen is then cooled and enters the main drying pipe 3022 of the third drying component 3, 80% of the hydrogen is discharged through the main exhaust pipe 312 to obtain the product hydrogen, and 20% of the hydrogen enters the cooling pipe 3024 of the first drying component 3 through the auxiliary air pipe 311 to cool the molecular sieve inside it. At this time, the heating coil 309 inside the first drying component 3 has heated the molecular sieve inside the inner tube 303, and the moisture adsorbed on the molecular sieve will be gradually desorbed. When the temperature of the upper part of the dryer reaches the interlocking limit, the regeneration is completed. At this time, 20% of the cold hydrogen enters from the bottom of the inner tube 303 to cool the molecular sieve again, and then this part of the hydrogen enters the auxiliary drying pipe 3023 of the second drying component 3 from the auxiliary exhaust pipe 313, and is discharged from the main exhaust pipe 312 of the second drying mechanism after being dried;

[0069] The molecular sieve in each inner tube 303 can just process 80% hydrogen plus 20% hydrogen, and then heat and regenerate. After the above three processes are circulated, the cycle is finally carried out from the first drying component 3. During the cycle, the raw hydrogen can be controlled by the valve to select the main drying tube 3022 of one of the drying components 3, and then the other valves are switched autonomously according to the above work flow, so that the hydrogen can be purified without stopping.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0071] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0072] 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 high pressure gas purification device, comprising a fixed stand (1), characterized in that: It also includes two air collecting pipes (2) and three drying components (3), wherein the air collecting pipes (2) and the drying components (3) are both fixed on a fixed stand (1); The drying assembly (3) comprises a cyclone mechanism (3001), an air inlet mechanism (3002), an inner tube (3003) and an outer tube (3004), wherein the air inlet mechanism (3002) is fixedly mounted on the bottom of the cyclone mechanism (3001), the inner tube (3003) is fixed on the air outlet end of the cyclone mechanism (3001), a molecular sieve is arranged inside the inner tube (3003), the outer tube (3004) is sleeved outside the inner tube (303), the bottom end of the outer tube (3004) is fixed to the outer ring of the cyclone mechanism (3001), and the upper end of the inner tube (3003) is fixed to the outer ring of the cyclone mechanism (3001). An exhaust cone (3005) is fixedly installed, the upper end of the outer tube (3004) is a closed structure, the inner top wall of the outer tube (3004) is above the exhaust cone (3005), an inverted cone ring (3006) is provided inside the upper end of the inner tube (3003), a breathable plate (307) is fixedly installed on the inverted cone ring (306) in the inner tube (3003), a positive cone ring (308) is fixedly installed on the bottom of the breathable plate (307) on the inverted cone ring (306), and the positive cone ring (308) is concentric with the inverted cone ring (306); The bottom end of the inner tube (303) is sleeved with a heating coil (309), which is fixed on the cyclone mechanism (3001); a main air pipe (310) and a secondary air pipe (311) are fixedly installed on the side of the lower end of the outer tube (304), and a valve is installed in the secondary air pipe (311); The main gas pipe (310) is provided with a main exhaust pipe (312) and a secondary exhaust pipe (313), both the main exhaust pipe (312) and the secondary exhaust pipe (313) are provided with valves, and the main exhaust pipe (312) is connected to one of the gas collecting pipes (2); The air inlet mechanism (302) comprises a central main pipe (30021), a main drying pipe (30022), a secondary drying pipe (30023) and a cooling pipe (30024); valves are installed on the central main pipe (30021), the main drying pipe (30022), the secondary drying pipe (3023) and the cooling pipe (3024); the central main pipe (3021) is connected to the cyclone mechanism (301); the main drying pipe (3022), the secondary drying pipe (3023) and the cooling pipe (3024) are connected to the central main pipe (3021); and the main drying pipe (3022) is connected to another air collecting pipe (2); Any one of the auxiliary air pipes (311) is connected to the cooling pipe (3024) of another drying component (3), and any one of the auxiliary exhaust pipes (313) is connected to the auxiliary drying pipe (3023) of another drying component (3).

2. The high-pressure gas purification device according to claim 1, characterized in that: The cyclone mechanism (301) comprises an air blowing cone sleeve (3011) and an air receiving inner disk (3012). The interior of the air blowing cone sleeve (30011) is a hollow structure, and the lower end thereof is connected to the central main tube (30021). The two are in communication. The air receiving inner disk (30012) is fixed in the air blowing cone sleeve (30011). A plurality of high-pressure air blowing pipes (30013) are fixedly installed on the inner ring of the air blowing cone sleeve (30011). The high-pressure air blowing pipes (3013) are in communication with the inner cavity of the air blowing cone sleeve (30011). The high-pressure air blowing pipes (30013) are inclined and have the same inclination angle. A three-dimensional air guide cone (30014) is fixedly installed in the middle position of the inner bottom wall of the air receiving inner disk (30012). The outer ring of the three-dimensional air guide cone (30014) is provided with a plurality of thread grooves (30015). The bottom end of the inner tube (3003) is fixed to the outer ring of the air receiving inner disk (3012), and the bottom end of the outer tube (304) is fixed to the outer ring of the air blowing cone sleeve (3011).

3. The high pressure gas purification device according to claim 2, characterized in that: The tip of the blowing cone sleeve (30011) faces downward, and the internal cavity of the blowing cone sleeve (30011) is a cone-shaped structure.

4. The high-pressure gas purification device according to claim 3, characterized in that: A filter cotton (314) is provided between the air permeable plate (3007) and the exhaust cone (305); a plurality of absorbent cottons (315) are fixedly sleeved on the inner wall of the outer tube (304) at the position corresponding to the heating coil (3009); and the main air pipe (310) and the auxiliary air pipe (311) are both correspondingly installed under the lowest absorbent cotton (315).

5. The high-pressure gas purification device according to claim 4, characterized in that: The exhaust cone (305) is a conical structure with an exhaust hole in the center, the inverted cone ring (306) is an annular structure with an inner hole (316) in the middle, the diameter of the positive cone ring (3008) is smaller than that of the exhaust cone (3005), and a channel for exhaust is provided between the two, and the tips of the inverted cone ring (3006) and the positive cone ring (3008) are in opposite directions.

6. The high-pressure gas purification device according to claim 5, characterized in that: The inner wall of the upper end of the outer tube (3004) is an arc-shaped structure, which corresponds to the position of the exhaust hole of the exhaust cone (3005), and a channel for exhaust is provided between the two.

7. The high-pressure gas purification device according to claim 1, characterized in that: The main exhaust pipe (312) is connected to the gas collecting pipe (2) through the finished hydrogen supply pipe (317), and the main drying pipe (3022) is connected to the gas collecting pipe (2) through the raw hydrogen supply pipe (318).

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