A hydrogen purification device for producing hydrogen by electrolysis of water

Abstract

A hydrogen purification device for producing hydrogen by electrolysis of water, relates to the technical field of hydrogen impurity separation, comprises a support base, the support base is a U-shaped base with an opening facing downward, a horizontal extension support plate is fixedly connected to the lower end of the lateral side wall of the support base, a deoxidation component is provided on the extension support plate, a cooling component, a water removal component and a drying component are sequentially provided on the support base, and the components are connected by pipelines. The present invention solves the problems that the purification equipment in the traditional technology is difficult to completely separate the various impurities in the hydrogen during the process of purifying hydrogen produced by electrolysis of water, new impurities that are difficult to remove are easily introduced during the purification process, the hydrogen loss is too large, and the molecular sieve adsorption regeneration operation is cumbersome during the drying process, resulting in reduced purification efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen impurity separation, and in particular to a hydrogen purification device for producing hydrogen by electrolyzing water. Background Art

[0002] Hydrogen production by water electrolysis is a relatively convenient method of producing hydrogen. Direct current is passed through an electrolytic cell filled with electrolyte, and water molecules undergo electrochemical reactions on the electrodes, decomposing into hydrogen and oxygen. In principle, it is not difficult to see that hydrogen produced by electrolysis usually contains a small amount of oxygen and gaseous water. As a chemical raw material and energy carrier, hydrogen has different requirements for purity and impurity content in different application scenarios. Therefore, in the process of hydrogen production by water electrolysis, hydrogen purification is an indispensable link.

[0003] Hydrogen purification refers to the general term for methods of removing impurities from hydrogen by physical or chemical methods. From the perspective of necessity, hydrogen, as a chemical raw material and energy carrier, has different requirements for purity and impurity content in different application scenarios. For example, in the production of synthetic ammonia, methanol and other chemical industries, in order to prevent catalyst poisoning and ensure product quality, sulfides and other poisons in the raw gas must be removed in advance to reduce the impurity content to meet the requirements; and with the development of the semiconductor industry, fine chemicals and optoelectronics industries, semiconductor production processes require the use of high-purity hydrogen of more than 99.999%, but the purity of hydrogen obtained by various industrial hydrogen production methods is not high. In order to meet the industrial demand for various high-purity hydrogen, hydrogen must be further purified.

[0004] The essence of hydrogen purification is to separate hydrogen from impurities. Hydrogen purification requires the use of specific purification equipment and a series of purification processes on the corresponding purification equipment. Since the raw hydrogen itself is a gaseous mixture and the purification process involves the conversion of gas phase and liquid phase, the following problems often arise when using existing equipment to purify hydrogen:

[0005] 1. The equipment has a single function and cannot completely separate various impurities in hydrogen, resulting in poor separation effect.

[0006] 2. When using chemical reactions to separate certain impurities, new impurities will be introduced, and these new impurities are difficult to remove through subsequent purification processes.

[0007] 3. The purification equipment used for deoxygenation, cooling, dehydration and drying is dispersed, which means that hydrogen needs to be transferred, stored and transported over long distances during the purification process. This will extend the purification time and increase the loss of hydrogen.

[0008] 4. In the process of hydrogen drying by adsorption method, since the adsorption of molecular sieve is physical adsorption, not a catalyst, the adsorption capacity of molecular sieve will gradually decrease with the saturation of adsorption. Therefore, after a period of time, the molecular sieve needs to be regenerated before adsorption can be performed again. That is, the molecular sieve must be replaced for each adsorption drying, and the molecular sieve that has lost its adsorption capacity must be transferred to the regeneration device for regeneration and recovery. The operation is cumbersome, resulting in the problem of reduced purification and drying efficiency.

[0009] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0010] In view of the defects in the prior art, the present invention provides a hydrogen purification device for producing hydrogen by electrolysis of water, so as to solve the problems that, in the process of purification equipment in the traditional technology being used for the purification of hydrogen by electrolysis of water, various impurities in the hydrogen are difficult to be completely separated, new impurities that are difficult to remove are easily introduced during the purification process, hydrogen loss is too large, and the molecular sieve adsorption regeneration operation is cumbersome during the drying process, resulting in reduced purification efficiency.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A hydrogen purification device for producing hydrogen by electrolyzing water comprises a support base, an extended support plate is fixedly connected to the lower end of the lateral side wall of the support base, a deoxidation component is arranged on the extended support plate, a cooling component, a water removal component and a drying component are arranged in sequence on the support base, and the components are connected by pipelines.

[0013] As an optimized solution, the drying component includes an adsorption tower and a regeneration tower. The regeneration tower is fixedly connected to the upper end of the adsorption tower. An isolation inner cylinder is fixed in the regeneration tower. The isolation inner cylinder is a two-section cylindrical cylinder with upper and lower openings. The inner diameter of the upper half of the isolation inner cylinder is larger than the inner diameter of the lower half, and the lower end of the isolation inner cylinder extends into the adsorption tower.

[0014] As an optimized solution, two symmetrical baffles are fixed longitudinally on the outer wall of the isolation inner cylinder, a lifting net cylinder is provided between the two baffles, the lifting net cylinder is filled with molecular sieve adsorbent, and horizontal circular partitions are fixed to the upper and lower ends of the lifting net cylinder respectively. The circular partition located above is arranged close to the inner wall of the isolation inner cylinder, and two symmetrical arc-shaped electric heating plates are fixed to the inner wall of the upper half of the isolation inner cylinder.

[0015] As an optimized solution, the deoxidation assembly includes a nested deoxidation outer cylinder and a deoxidation inner cylinder, a deoxidation catalyst is filled between the deoxidation outer cylinder and the deoxidation inner cylinder, and a vertically extending electric heating wire is provided in the deoxidation inner cylinder.

[0016] As an optimized solution, the lower end of the deoxidation outer cylinder is a closed arc surface, the upper end of the deoxidation outer cylinder is open and fixedly provided with a horizontal cover plate, the deoxidation inner cylinder is fixedly mounted on the horizontal cover plate, the deoxidation inner cylinder is a cylindrical cylinder with a closed upper end and an open lower end, and the lower end of the deoxidation inner cylinder passes through the horizontal cover plate and extends to the interior of the deoxidation outer cylinder.

[0017] As an optimized solution, a horizontal air intake pipe is fixedly connected to the outer peripheral wall near the upper end of the deoxidation inner cylinder, and an air intake check valve is provided in the air intake pipe. A power supply module is fixedly connected to the upper end surface of the deoxidation inner cylinder, and the upper ends of the electric heating wire respectively pass through the inner top surface of the deoxidation inner cylinder and are fixedly connected to the power supply module.

[0018] As an optimized solution, a first bracket is fixed to the outer side of the lower port of the deoxidation inner cylinder, and an intake air temperature sensor is fixed to the lower end of the first bracket.

[0019] As an optimized solution, a first horizontal transfer pipe is fixedly connected to the outer peripheral wall of the deoxidation outer tube, a first stop valve is provided in the first transfer pipe, a second bracket corresponding to the first transfer pipe is fixed to the outer peripheral wall of the deoxidation inner tube, and an outlet gas temperature sensor is fixed to the second bracket.

[0020] As an optimized solution, a support frame is fixed on the outer peripheral wall of the deoxidation outer cylinder near the lower end, and the lower end of the support frame is fixedly connected to the upper surface of the extended support plate.

[0021] As an optimized solution, the cooling assembly includes a cooling tower, which is a vertically arranged cylindrical tube with closed ends. The lower end of the cooling tower is fixedly connected to the upper surface of the support base, and the end of the first transfer pipe is fixedly connected to the cooling tower.

[0022] As an optimized solution, a horizontal second transfer pipe is fixedly connected to the transverse outer peripheral wall near the upper part of the cooling tower, a second stop valve is provided in the second transfer pipe, and the second transfer pipe and the first transfer pipe are respectively arranged on both sides of the cooling tower.

[0023] As an optimized solution, a cooling bend is provided in the cooling tower, and the cooling bend is vertically arranged. The lower end of the cooling bend is fixedly connected to the inner wall of the cooling tower and is connected to the first transfer pipe. The upper end of the cooling bend is fixedly connected to the inner wall of the cooling tower and is connected to the second transfer pipe.

[0024] As an optimized solution, a spiral condenser is sleeved on the outer side of the cooling elbow, and the upper and lower ends of the spiral condenser pass through the cooling tower respectively and extend to the outside thereof, and circulating cooling water is built into the spiral condenser.

[0025] As an optimized solution, the water removal component includes an air-water separator, which is a square box with a closed upper end and an open lower end. A water collecting bucket is fixedly connected to the lower end of the air-water separator, and a drainage check valve is provided in the lower opening of the water collecting bucket. A plurality of supporting vertical plates are fixedly connected to the circumferential outer wall of the water collecting bucket, and the lower end of each of the supporting vertical plates is respectively fixedly connected to the upper surface of the supporting base.

[0026] As an optimized solution, the end of the second transfer pipe is fixedly connected to the gas-water separator, and a horizontal third transfer pipe is fixedly connected to the transverse outer wall of the gas-water separator near the upper end. A third stop valve is provided in the third transfer pipe, and the third transfer pipe and the second transfer pipe are respectively arranged on both sides of the gas-water separator.

[0027] As an optimized solution, an air intake arc tube and an exhaust U-shaped tube are respectively provided in the air-water separator, and the air intake arc tube and the exhaust U-shaped tube are alternately arranged. The upper end of the air intake arc tube is fixedly connected to the inner wall on one side of the air-water separator and is connected to the second transfer tube. The upper end of the exhaust U-shaped tube is fixedly connected to the inner wall on the other side of the air-water separator and is connected to the third transfer tube.

[0028] As an optimized solution, a drain outlet is provided in the middle of the surface of the support base, and the drain outlet is arranged opposite to the water collecting bucket. A longitudinally sliding water collecting tank is provided below the drain outlet. The water collecting tank is a square box with an open upper end. Two L-shaped limit plates are respectively provided on the lateral sides of the water collecting tank, and the upper end of each of the L-shaped limit plates is respectively fixed to the inner top surface of the support base.

[0029] As an optimized solution, the end of the third transfer pipe is fixed to the horizontal outer wall of one side of the adsorption tower, and a horizontal exhaust pipe is fixed to the horizontal outer wall of the other side of the adsorption tower. An exhaust check valve is provided in the exhaust pipe, and the exhaust pipe and the third transfer pipe are respectively arranged on both sides of the adsorption tower.

[0030] As an optimized solution, a U-shaped support plate is fixed to one side of the upper surface of the support base, and the lower end of the adsorption tower is fixedly connected to the upper surface of the U-shaped support plate.

[0031] As an optimized solution, a vertical lifting and telescopic cylinder is fixedly connected to the upper surface of the support base, and the upper telescopic end of the lifting and telescopic cylinder passes through the U-shaped support plate and the adsorption tower in sequence and is fixedly connected to the lower surface of the circular partition below.

[0032] As an optimized solution, the outer side wall of the baffle plate is fixedly connected to the inner peripheral wall of the adsorption tower, and the lower end of the baffle plate is fixedly connected to the inner bottom surface of the adsorption tower.

[0033] As an optimized solution, a conical exhaust scoop is fixedly connected to the upper end of the isolation inner cylinder, and the upper end of the exhaust scoop passes through the upper end surface of the regeneration tower and extends to the outside thereof.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention can simultaneously realize multiple functions of deoxygenation, cooling, dehydration and drying of hydrogen on one device, and the components used to realize purification are centrally arranged and connected by pipelines, omitting the link of transfer and storage, and greatly shortening the pipeline transportation length, thereby reducing the loss of hydrogen.

[0036] The deoxidation assembly provided in the present invention can separate oxygen from the raw hydrogen and convert it into gaseous water through a chemical reaction. Specifically, the deoxidation assembly includes a deoxidation outer cylinder and a deoxidation inner cylinder, the lower end of the deoxidation inner cylinder extends into the deoxidation outer cylinder, and a deoxidation catalyst is filled between the deoxidation outer cylinder and the deoxidation inner cylinder. After being heated by the electric heating wire, the raw hydrogen directly contacts the deoxidation catalyst to react with a small amount of oxygen and hydrogen to generate water, and the generated water then flows out of the deoxidation outer cylinder in a gaseous form along with the hydrogen.

[0037] The cooling assembly provided in the present invention can condense the original gaseous water in the raw hydrogen and the newly generated gaseous water in the deoxygenation step into liquid water, making it easy to separate later. Specifically, the cooling assembly includes a cooling tower, in which a vertical cooling elbow is provided, and the two ends of the cooling elbow are respectively connected to the first transfer pipe and the second transfer pipe, and a spiral condenser is provided on the outer side of the cooling elbow, and the spiral condenser is filled with circulating cooling water. After the high-temperature hydrogen and gaseous water enter the cooling tower, they flow upward along the cooling elbow and exchange heat with the cooling water in the spiral condenser, so that the gaseous water condenses into liquid at the end of the cooling elbow.

[0038] The dewatering assembly provided in the present invention can separate liquid water from hydrogen by gravity sedimentation. Specifically, the dewatering assembly includes a gas-water separator, in which an air intake arc tube and an exhaust U-shaped tube are alternately arranged. Liquid water and hydrogen enter through the air intake arc tube, collide with the outer wall of the exhaust U-shaped tube, and deflect. Under the action of gravity, liquid water falls and hydrogen rises, thereby achieving gas-liquid separation.

[0039] The drying component provided in the present invention can further remove moisture from hydrogen by utilizing the adsorption effect of the molecular sieve, and regenerate the adsorption capacity by heating the molecular sieve. Specifically, the drying component includes an adsorption tower, a regeneration tower, and an isolation inner cylinder connecting the adsorption tower and the regeneration tower. A lifting net cylinder is provided at the lower end of the isolation inner cylinder, and the lifting net cylinder is filled with a molecular sieve adsorbent. The baffle fixed to the outer peripheral wall of the isolation inner cylinder allows the hydrogen entering one side of the adsorption tower to reach the other side only by passing through the molecular sieve adsorbent, and when the hydrogen passes through the molecular sieve adsorbent, the residual moisture inside is adsorbed and removed; further, after the adsorption capacity of the molecular sieve decreases, the lifting net cylinder can be moved as a whole to the upper half of the isolation inner cylinder by controlling the extension of the lifting telescopic cylinder, and the molecular sieve adsorbent of the lifting inner cylinder is heated and regenerated by using an arc-shaped electric heating plate. After the regeneration is completed, the lifting net cylinder is moved to the lower part of the adsorption tower, and dry adsorption is performed again, thereby improving the efficiency of purification and drying.

[0040] The present invention introduces gaseous water only in the deoxygenation step during the entire purification process. As an impurity existing in the hydrogen raw material, the gaseous water will flow with the hydrogen and be separated in the subsequent cooling zone, dehydration and drying steps, thereby avoiding the problem of new impurities introduced due to chemical reactions that are difficult to separate and remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0042] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0043] Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction;

[0044] Figure 3 It is a schematic cross-sectional view of the internal structure of the drying component in the present invention in the side view direction;

[0045] Figure 4 It is a schematic cross-sectional view of the internal structure of the water removal component in the present invention in the side view direction;

[0046] Figure 5 It is a top view schematic diagram of the regeneration tower and its internal structure in the present invention;

[0047] Figure 6 It is an external overall schematic diagram of the present invention in the main viewing direction;

[0048] Figure 7 It is a schematic diagram of the overall exterior of the present invention when viewed from above.

[0049] In the figure: 1-support base, 2-extension support plate, 3-deoxidation outer cylinder, 4-deoxidation inner cylinder, 5-horizontal cover plate, 6-deoxidation catalyst, 7-intake pipe, 8-intake check valve, 9-electric heating wire, 10-power supply module, 11-first bracket, 12-intake temperature sensor, 13-first transfer pipe, 14-first check valve, 15-second bracket, 16-outlet temperature sensor, 17-support bracket, 18-cooling tower, 19-second transfer pipe, 20-second check valve, 21-cooling elbow, 22-spiral condenser, 23-gas-water separator , 24-water collecting bucket, 25-drainage check valve, 26-support vertical plate, 27-third transfer pipe, 28-third check valve, 29-inlet arc pipe, 30-exhaust U-shaped pipe, 31-drainage outlet, 32-collecting water tank, 33-L-type limit plate, 34-adsorption tower, 35-regeneration tower, 36-U-shaped support plate, 37-exhaust pipe, 38-exhaust check valve, 39-isolation inner cylinder, 40-baffle, 41-lifting mesh cylinder, 42-circular partition, 43-molecular sieve adsorbent, 44-lifting telescopic cylinder, 45-exhaust bucket, 46-arc electric heating plate. DETAILED DESCRIPTION

[0050] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0051] like Figures 1 to 7 As shown, a hydrogen purification device for producing hydrogen by electrolysis of water includes a support base 1, which is a U-shaped base with an opening facing downward. A horizontal extended support plate 2 is fixedly connected to the lower end of the lateral side wall of the support base 1, and a deoxidation component is provided on the extended support plate 2. A cooling component, a water removal component and a drying component are sequentially provided on the support base 1, and the components are connected by pipelines.

[0052] The deoxidation assembly includes a deoxidation outer cylinder 3 and a deoxidation inner cylinder 4. The lower end of the deoxidation outer cylinder 3 is a closed arc surface. The upper end of the deoxidation outer cylinder 3 is open and fixedly provided with a horizontal cover plate 5. The deoxidation inner cylinder 4 is fixedly mounted on the horizontal cover plate 5. The deoxidation inner cylinder 4 is a cylindrical cylinder with a closed upper end and an open lower end. The lower end of the deoxidation inner cylinder 4 passes through the horizontal cover plate 5 and extends to the interior of the deoxidation outer cylinder 3.

[0053] A deoxidation catalyst 6 is filled between the deoxidation outer cylinder 3 and the deoxidation inner cylinder 4 .

[0054] A horizontal air intake pipe 7 is fixedly connected to the outer peripheral wall near the upper end of the deoxidation inner cylinder 4, and an air intake check valve 8 is arranged in the air intake pipe 7. A vertically extending electric heating wire 9 is arranged in the deoxidation inner cylinder 4. A power supply module 10 is fixedly connected to the upper end surface of the deoxidation inner cylinder 4, and the upper ends of the electric heating wire 9 respectively pass through the inner top surface of the deoxidation inner cylinder 4 and are fixedly connected to the power supply module 10.

[0055] A first bracket 11 is fixed to the outer side of the lower port of the deoxidation inner cylinder 4 , and an intake air temperature sensor 12 is fixed to the lower end of the first bracket 11 .

[0056] A first horizontal transfer pipe 13 is fixedly connected to the outer peripheral wall of the deoxidation outer tube 3, and a first non-passing valve 14 is arranged in the first transfer pipe 13. A second bracket 15 corresponding to the first transfer pipe 13 is fixed to the outer peripheral wall of the deoxidation inner tube 4, and an outlet gas temperature sensor 16 is fixed to the second bracket 15.

[0057] A support bracket 17 is fixed on the outer peripheral wall of the deoxidation outer cylinder 3 near the lower end, and the lower end of the support bracket 17 is fixedly connected to the upper surface of the extended support plate 2.

[0058] The cooling assembly includes a cooling tower 18 , which is a vertically arranged cylindrical tube with closed ends. The lower end of the cooling tower 18 is fixedly connected to the upper surface of the support base 1 , and the end of the first transfer pipe 13 is fixedly connected to the cooling tower 18 .

[0059] A second horizontal transfer pipe 19 is fixedly connected to the transverse outer peripheral wall near the upper part of the cooling tower 18 . A second non-contact valve 20 is arranged in the second transfer pipe 19 . The second transfer pipe 19 and the first transfer pipe 13 are respectively arranged on both sides of the cooling tower 18 .

[0060] A cooling elbow 21 is provided in the cooling tower 18. The cooling elbow 21 is arranged vertically. The lower end of the cooling elbow 21 is fixedly connected to the inner wall of the cooling tower 18 and is connected to the first transfer pipe 13. The upper end of the cooling elbow 21 is fixedly connected to the inner wall of the cooling tower 18 and is connected to the second transfer pipe 19.

[0061] A spiral condenser tube 22 is sleeved on the outer side of the cooling elbow 21 . The upper and lower ends of the spiral condenser tube 22 respectively pass through the cooling tower 18 and extend to the outside thereof. The spiral condenser tube 22 is filled with circulating cooling water.

[0062] The water removal component includes an air-water separator 23, which is a square box with a closed upper end and an open lower end. A water collecting bucket 24 is fixedly connected to the lower end of the air-water separator 23. A drainage check valve 25 is provided in the lower opening of the water collecting bucket 24. A plurality of supporting vertical plates 26 are fixedly connected to the circumferential outer wall of the water collecting bucket 24, and the lower end of each supporting vertical plate 26 is fixedly connected to the upper surface of the supporting base 1.

[0063] The end of the second transfer pipe 19 is fixedly connected to the gas-water separator 23. A horizontal third transfer pipe 27 is fixedly connected to the transverse outer wall of the gas-water separator 23 near the upper end. A third stop valve 28 is provided in the third transfer pipe 27. The third transfer pipe 27 and the second transfer pipe 19 are respectively arranged on both sides of the gas-water separator 23.

[0064] An air intake arc tube 29 and an exhaust U-shaped tube 30 are respectively provided in the air-water separator 23, and the air intake arc tube 29 and the exhaust U-shaped tube 30 are alternately arranged. The upper end of the air intake arc tube 29 is fixedly connected to the inner wall of one side of the air-water separator 23 and is connected to the second transfer tube 19, and the upper end of the exhaust U-shaped tube 30 is fixedly connected to the inner wall of the other side of the air-water separator 23 and is connected to the third transfer tube 27.

[0065] A drain outlet 31 is provided in the middle of the surface of the support base 1, and the drain outlet 31 is arranged opposite to the water collecting bucket 24. A longitudinally sliding water collecting tank 32 is provided below the drain outlet 31. The water collecting tank 32 is a square box with an open upper end. Two L-shaped limit plates 33 are respectively provided on the lateral sides of the water collecting tank 32, and the upper end of each L-shaped limit plate 33 is respectively fixed to the inner top surface of the support base 1.

[0066] The drying assembly includes an adsorption tower 34 and a regeneration tower 35 . The regeneration tower 35 is fixedly mounted on the upper end of the adsorption tower 34 . A U-shaped support plate 36 is fixed on one side of the upper surface of the support base 1 . The lower end of the adsorption tower 34 is fixedly connected to the upper surface of the U-shaped support plate 36 .

[0067] The end of the third transfer pipe 27 is fixed to the horizontal outer wall of one side of the adsorption tower 34. A horizontal exhaust pipe 37 is fixed to the horizontal outer wall of the other side of the adsorption tower 34. An exhaust check valve 38 is provided in the exhaust pipe 37. The exhaust pipe 37 and the third transfer pipe 27 are respectively arranged on both sides of the adsorption tower 34.

[0068] An isolation inner cylinder 39 is fixedly installed in the regeneration tower 35. The isolation inner cylinder 39 is a two-section cylindrical cylinder with openings at both ends. The inner diameter of the upper half of the isolation inner cylinder 39 is larger than the inner diameter of the lower half. The lower end of the isolation inner cylinder 39 passes through the inner bottom surface of the regeneration tower 35 and the inner top surface of the adsorption tower 34 in sequence and extends into the adsorption tower 34.

[0069] Two symmetrical baffles 40 are fixed on the outer peripheral wall of the isolation inner cylinder 39 in the longitudinal direction. The outer side walls of the baffles 40 are fixedly connected to the inner peripheral wall of the adsorption tower 34 , and the lower ends of the baffles 40 are fixedly connected to the inner bottom surface of the adsorption tower 34 .

[0070] A lifting net cylinder 41 is provided between the two baffle plates 40, and horizontal circular partitions 42 are fixedly connected to the upper and lower ends of the lifting net cylinder 41 respectively. The circular partition 42 located at the top is clamped in the isolation inner cylinder 39, and the outer diameter of the circular partition 42 is slightly smaller than the inner diameter of the lower half of the isolation inner cylinder 39. The lifting net cylinder 41 is filled with a molecular sieve adsorbent 43.

[0071] A vertical lifting and telescopic cylinder 44 is fixedly connected to the upper surface of the support base 1 , and the upper telescopic end of the lifting and telescopic cylinder 44 passes through the U-shaped support plate 36 and the adsorption tower 34 in sequence and is fixedly connected to the lower surface of the circular partition 42 below.

[0072] A conical exhaust scoop 45 is fixedly connected to the upper end of the isolation inner cylinder 39 , and the upper end of the exhaust scoop 45 passes through the upper end surface of the regeneration tower 35 and extends to the outside thereof.

[0073] Two symmetrical arc-shaped electric heating plates 46 are fixedly connected to the inner peripheral wall of the upper half of the isolation inner cylinder 39 . The inner diameter of the arc-shaped electric heating plates 46 is larger than the outer diameter of the circular partition plate 42 .

[0074] The ends of the air inlet pipe 7 and the exhaust pipe 37 are both provided with gas delivery equipment such as compressed air pumps.

[0075] When the present invention is used, firstly, a mixture of hydrogen, oxygen and gaseous water is introduced into the air inlet pipe 7 from the open end, and the mixed gas enters the deoxidation inner cylinder 4 through the air inlet pipe 7 and flows downward along the deoxidation inner cylinder 4. After being heated by the electric heating wire 9, a small amount of oxygen reacts with hydrogen to generate water under the action of the deoxidation catalyst 6. The water generated by the combination flows with the hydrogen in the form of gas and is discharged into the first transfer pipe 13. During the deoxidation process, the air inlet temperature sensor 12 and the air outlet temperature sensor 16 can monitor and control the reaction temperature. After deoxidation is completed, the first stop valve 14 is opened, and the high-temperature hydrogen and gaseous water enter the cooling tower 18 and flow upward along the cooling elbow 21. During this period, circulating cooling water is introduced into the spiral condenser 22 to condense the gaseous water at the end of the cooling elbow 21 into liquid; after cooling is completed, the hydrogen and liquid water enter the second transfer pipe 19, and the second stop valve 20 is opened. The hydrogen and liquid water enter the gas-water separator 23 and flow along the air inlet arc pipe 29. Under the action of gravity, the liquid water slides down to the water collecting bucket 24, and the hydrogen The hydrogen rises and is re-absorbed into the exhaust U-shaped pipe 30; the drainage check valve 25 is opened, and the liquid water flows into the collection water tank 32 through the drainage port 31 for collection; the third check valve 28 is opened, and the hydrogen enters the adsorption tower 34 through the third transfer pipe 27. Due to the effect of the baffle 40, the hydrogen can only pass through the lifting net cylinder 41 from the bottom of the adsorption tower 34, so that the molecular sieve adsorbent 43 in the lifting net cylinder 41 is used to completely remove the water in the hydrogen to improve the purity of the hydrogen; after the adsorption is completed, the arc-shaped electric heating plate 46 is powered. The lifting and telescopic cylinder 44 is controlled to rise, and the lifting net tube 41 is driven to move upward as a whole to between two arc-shaped electric heating plates 46, and the molecular sieve adsorbent 43 is heated by the arc-shaped electric heating plates 46 to evaporate the absorbed water, so as to achieve the regeneration of the molecular sieve adsorbent 43; after the regeneration of the molecular sieve adsorbent 43 is completed, the lifting and telescopic cylinder 44 is controlled to shorten, and the lifting net tube 41 is driven to fall back to the bottom of the adsorption tower 34 for re-adsorption and drying; after the drying is completed, the exhaust check valve 38 is opened to extract the hydrogen from the exhaust pipe 37.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A hydrogen purification device for producing hydrogen by electrolysis of water, characterized in that: It comprises a support base (1), the lower end of the lateral side wall of the support base (1) is fixedly connected to an extended support plate (2), the extended support plate (2) is provided with a deoxidation component, and the support base (1) is provided with a cooling component, a water removal component and a drying component in sequence, and the components are connected by pipelines; The drying assembly comprises an adsorption tower (34) and a regeneration tower (35), wherein the regeneration tower (35) is fixedly connected to the upper end of the adsorption tower (34), and an isolation inner cylinder (39) is fixed in the regeneration tower (35), wherein the isolation inner cylinder (39) is a two-section cylindrical cylinder with upper and lower openings, wherein the inner diameter of the upper half of the isolation inner cylinder (39) is greater than the inner diameter of the lower half, and the lower end of the isolation inner cylinder (39) extends into the adsorption tower (34); Two symmetrical baffles (40) are fixed longitudinally on the outer peripheral wall of the isolation inner cylinder (39); a lifting net cylinder (41) is provided between the two baffles (40); the lifting net cylinder (41) is filled with a molecular sieve adsorbent (43); the upper and lower ends of the lifting net cylinder (41) are respectively fixedly connected with horizontal circular partitions (42); the circular partition (42) located at the top is arranged in close contact with the inner peripheral wall of the isolation inner cylinder (39); and two symmetrical arc-shaped electric heating plates (46) are fixedly connected to the inner peripheral wall of the upper half of the isolation inner cylinder (39); The deoxidation assembly comprises a nested deoxidation outer cylinder (3) and a deoxidation inner cylinder (4), a deoxidation catalyst (6) is filled between the deoxidation outer cylinder (3) and the deoxidation inner cylinder (4), and a vertically extending electric heating wire (9) is provided in the deoxidation inner cylinder (4); The lower end of the deoxidation outer cylinder (3) is a closed arc-shaped surface, the upper end of the deoxidation outer cylinder (3) is open and is provided with a horizontal cover plate (5) fixedly connected thereto, the deoxidation inner cylinder (4) is fixedly mounted on the horizontal cover plate (5), the deoxidation inner cylinder (4) is a cylindrical cylinder with a closed upper end and an open lower end, the lower end of the deoxidation inner cylinder (4) passes through the horizontal cover plate (5) and extends into the interior of the deoxidation outer cylinder (3); A horizontal air intake pipe (7) is fixedly connected to the outer peripheral wall of the deoxidation inner cylinder (4) near the upper end, and an air intake check valve (8) is arranged in the air intake pipe (7). A power supply module (10) is fixedly connected to the upper end surface of the deoxidation inner cylinder (4), and the upper ends of the electric heating wire (9) respectively pass through the inner top surface of the deoxidation inner cylinder (4) and are fixedly connected to the power supply module (10); A first bracket (11) is fixed to the outer side of the lower port of the deoxidation inner cylinder (4), and an intake air temperature sensor (12) is fixed to the lower end of the first bracket (11); A first horizontal transfer pipe (13) is fixedly connected to the outer peripheral wall of the deoxidation outer cylinder (3), a first non-contact valve (14) is arranged in the first transfer pipe (13), a second bracket (15) corresponding to the first transfer pipe (13) is fixed to the outer peripheral wall of the deoxidation inner cylinder (4), and an outlet gas temperature sensor (16) is fixed to the second bracket (15); The cooling assembly comprises a cooling tower (18), the cooling tower (18) being a vertically arranged cylindrical tube with closed ends, the lower end of the cooling tower (18) being fixedly connected to the upper surface of the support base (1), and the end of the first transfer pipe (13) being fixedly connected to the cooling tower (18); A second horizontal transfer pipe (19) is fixedly connected to a transverse outer peripheral wall near the upper portion of the cooling tower (18), a second non-conducting valve (20) is provided in the second transfer pipe (19), and the second transfer pipe (19) and the first transfer pipe (13) are respectively arranged on both sides of the cooling tower (18); A cooling elbow (21) is provided in the cooling tower (18), the cooling elbow (21) being arranged vertically, the lower end of the cooling elbow (21) being fixedly connected to the inner circumferential wall of the cooling tower (18) and being butt-connected to the first transfer pipe (13), and the upper end of the cooling elbow (21) being fixedly connected to the inner circumferential wall of the cooling tower (18) and being butt-connected to the second transfer pipe (19); The outer side of the cooling elbow (21) is provided with a spiral condenser (22), the upper and lower ends of the spiral condenser (22) respectively pass through the cooling tower (18) and extend to the outside thereof, and the spiral condenser (22) contains circulating cooling water.

2. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: A support bracket (17) is fixed on the outer peripheral wall of the deoxidation outer cylinder (3) near the lower end, and the lower end of the support bracket (17) is fixedly connected to the upper surface of the extended support plate (2).

3. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The water removal assembly comprises an air-water separator (23), the air-water separator (23) being a square box with a closed upper end and an open lower end, a water collecting bucket (24) being fixedly connected to the lower end of the air-water separator (23), a water discharge check valve (25) being provided in the lower opening of the water collecting bucket (24), a plurality of supporting vertical plates (26) being fixedly connected to the circumferential outer wall of the water collecting bucket (24), and the lower end of each of the supporting vertical plates (26) being fixedly connected to the upper surface of the supporting base (1); The end of the second transfer pipe (19) is fixedly connected to the gas-water separator (23); a third transfer pipe (27) is fixedly connected to a transverse outer wall of the gas-water separator (23) near the upper end; a third stop valve (28) is provided in the third transfer pipe (27); the third transfer pipe (27) and the second transfer pipe (19) are respectively arranged on both sides of the gas-water separator (23).

4. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 3, characterized in that: An air intake arc tube (29) and an exhaust U-shaped tube (30) are respectively provided in the air-water separator (23). The air intake arc tube (29) and the exhaust U-shaped tube (30) are arranged alternately. The upper end of the air intake arc tube (29) is fixedly connected to the inner wall of one side of the air-water separator (23) and is connected to the second transfer tube (19). The upper end of the exhaust U-shaped tube (30) is fixedly connected to the inner wall of the other side of the air-water separator (23) and is connected to the third transfer tube (27).

5. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 3, characterized in that: A drainage port (31) is provided in the middle of the surface of the support base (1), and the drainage port (31) is arranged opposite to the water collecting bucket (24). A longitudinally sliding water collecting tank (32) is provided below the drainage port (31), and the water collecting tank (32) is a square box with an open top. Two L-shaped limiting plates (33) are respectively provided on two lateral sides of the water collecting tank (32), and the upper end of each L-shaped limiting plate (33) is respectively fixed to the inner top surface of the support base (1).

6. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 3, characterized in that: The end of the third transfer pipe (27) is fixedly connected to a transverse outer wall of one side of the adsorption tower (34); a horizontal exhaust pipe (37) is fixedly connected to the transverse outer wall of the other side of the adsorption tower (34); an exhaust check valve (38) is provided in the exhaust pipe (37); the exhaust pipe (37) and the third transfer pipe (27) are respectively arranged on both sides of the adsorption tower (34).

7. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: A U-shaped support plate (36) is fixed to one side of the upper surface of the support base (1), and the lower end of the adsorption tower (34) is fixedly connected to the upper surface of the U-shaped support plate (36); A vertical lifting and telescopic cylinder (44) is fixedly connected to the upper surface of the support base (1), and the upper telescopic end of the lifting and telescopic cylinder (44) passes through the U-shaped support plate (36) and the adsorption tower (34) in sequence and is fixedly connected to the lower surface of the circular partition (42) below; The outer wall of the baffle plate (40) is fixedly connected to the inner peripheral wall of the adsorption tower (34), and the lower end of the baffle plate (40) is fixedly connected to the inner bottom surface of the adsorption tower (34); A conical exhaust scoop (45) is fixedly connected to the upper end of the isolation inner cylinder (39), and the upper end of the exhaust scoop (45) passes through the upper end surface of the regeneration tower (35) and extends to the outside thereof.

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