Chlor-alkali electrolytic cell for hydrogen production and pharmacy
By introducing guide columns, conductive surfaces, conical protrusions, and interference line structures into the chlor-alkali electrolyzer, the problem of reduced conductive area caused by bubble adhesion was solved, thus achieving stability of the electrolysis reaction and production of high-purity hydrogen.
Patent Information
- Application Number
- CN202511574726.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-01-16
AI Technical Summary
During the electrolysis reaction, hydrogen and chlorine bubbles adhere to the surface of the electrode plates, reducing the conductive area, which in turn reduces the electrolysis reaction rate and the stability of pure hydrogen production.
By designing guide columns, conductive surfaces, conical protrusions, and interference line structures, the time for bubble adhesion is reduced. Combined with vibration elements and limiting components, the conductive area is kept stable during electrolysis, preventing bubble blockage.
This improves the efficiency of the electrolysis reaction and the stability of pure hydrogen production, reduces the generation of oxygen as a byproduct, and ensures the production of high-purity hydrogen.
Smart Images
Figure CN121344633A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electrolyzer technology, and more specifically to a chlor-alkali electrolyzer for hydrogen production in pharmaceuticals. Background Technology
[0002] The chlor-alkali electrolyzer is the core equipment in the chlor-alkali industry, which produces caustic soda (sodium hydroxide), chlorine and hydrogen by electrolyzing saturated brine.
[0003] During the electrolysis reaction, chlorine and hydrogen are generated in the form of bubbles on the surfaces of the anode and cathode;
[0004] Hydrogen production via chlor-alkali electrolysis is a mature and large-scale industrial process that can be widely applied in fields such as pharmaceuticals and metal processing.
[0005] In the pharmaceutical industry, hydrogen is a common reducing agent, and its main product is non-toxic water. Therefore, it is often used to reduce drug components. Thus, pure hydrogen can help improve the production quality of drugs.
[0006] However, during the electrolysis reaction, bubbles generated from the electrode surface will adhere to the electrode plate surface, causing the electrode plate with the attached bubbles to be unable to contact the electrolyte solution, thus reducing the conductive area of the electrode plate. The reduced conductive area of the electrode plate will slow down the reaction rate of the electrolysis reaction.
[0007] In view of this, we propose a chlor-alkali electrolyzer for hydrogen production in pharmaceuticals. Summary of the Invention
[0008] This invention proposes a chlor-alkali electrolyzer for hydrogen production in pharmaceuticals to solve the above-mentioned problems.
[0009] The purpose of this invention is to reduce the adhesion time of hydrogen and chlorine bubbles on the surface of the conductive electrode, thereby ensuring that the conductive area does not change during electrolysis, thus reducing the generation of the byproduct oxygen, improving the stability of pure hydrogen production, and further achieving stable and accurate pharmaceutical effects, thereby overcoming the problems in the background art.
[0010] Based on the above technical concept, the technical solution adopted by this invention is as follows:
[0011] A chlor-alkali electrolyzer for producing hydrogen for pharmaceutical use includes a tank body and a cover plate that is detachably connected to the top of the tank body. Two symmetrically distributed connecting pipes are provided through the top of the cover plate.
[0012] An ion membrane is fixedly installed at the center of the inner wall of the tank, and a conduction bracket is connected to the bottom of the cover plate through a limiting part. A support plate is fixedly installed at the bottom of the conduction bracket.
[0013] The outer surface of the support plate is provided with an insulating layer, and a plurality of guide parts distributed in a circular pattern are fixed on the top of the support plate;
[0014] The guide section includes a guide post, and conductive surfaces are integrally formed symmetrically on both sides of the outer surface of the guide post. The surface of the conductive surface is an exposed metal surface.
[0015] The conductive surface is provided with an inclined guide groove, which is inclined toward a conical protrusion provided on one side of the conductive surface.
[0016] The top of the guide column is integrally molded and has a release end;
[0017] The conductive surface, the tapered protrusion, and the detached end surface are charged.
[0018] As a further improvement to this technical solution, a mounting plate is detachably installed on the bottom of the support plate by bolts. The mounting plate is located directly below the converging channel. A piezoelectric ceramic is fixedly installed on the top of the end of the mounting plate away from the bolts. The piezoelectric ceramic is ring-shaped, and an interference line is fixedly installed at the center of the piezoelectric ceramic. The interference line is located between the two guide parts.
[0019] As a further improvement to this technical solution, a guide post is provided on the side of the guide portion away from the conical protrusion, and an insulating layer is provided on the surface of the guide post.
[0020] As a further improvement to this technical solution, the limiting part includes two limiting members slidably disposed at the bottom of the cover plate. The limiting members have a semi-circular protrusion structure. The connecting pipe is provided with a conductive tube for connecting with an external circuit. A support ring is damped on the outer arc surface of the conductive tube. An annular groove is provided on the outer arc surface of the support ring. The semi-circular protrusion structure of the limiting member extends into the annular groove. The two limiting members are symmetrically disposed on both sides of the support ring. The bottom of the conductive tube is fixedly connected to the center of the top of the conductive bracket. A cable is disposed inside the conductive tube.
[0021] As a further improvement to this technical solution, the conical protrusion and the surface of the detachment end are provided with fishbone-shaped grooves, which face the center of the conical protrusion and the tip of the detachment end.
[0022] As a further improvement to this technical solution, the outer surface of the tank is provided with a vibration part, which includes a support member set at the bottom of the tank. Two vibration grooves that bulge into the tank are symmetrically arranged at the bottom of the tank on both sides of the ion membrane. A vibration member is fixedly installed on the top of the support member and is located inside the recess of the vibration groove.
[0023] As a further improvement to this technical solution, the top of the support plate is provided with a plurality of conductive pillars distributed in a circular pattern, and the bottom of the guide part is provided with corresponding mounting holes. The guide part can be detachably connected to the top of the support plate through the structural combination of conductive pillars and mounting holes.
[0024] As a further improvement to this technical solution, a butt joint is provided through the outer arc surface of the connecting pipe, the butt joint is electrically connected to the cable, and a sealing element is provided at the point where the butt joint and the connecting pipe pass through and connect.
[0025] As a further improvement to this technical solution, a long strip-shaped sealing element is provided at the center of the bottom of the cover plate, and mounting grooves are provided on both sides of the center of the inner wall of the groove. The mounting grooves contact the two sides of the ion membrane, and the long strip-shaped sealing element contacts the top of the ion membrane. The ion membrane includes a mounting frame and a membrane structure installed inside the mounting frame.
[0026] As a further improvement to this technical solution, the tapered protrusion and the surface of the detached end are provided with a hydrophobic layer.
[0027] Compared with the prior art, the beneficial effects of the present invention are:
[0028] This invention achieves electrolytic processing of solutions through the guide column structure and its conductive surface structure, and reduces the impact of bubble obstruction on the electrolysis speed by guiding microbubbles through the guide groove.
[0029] The conical protrusion and detachment end facilitate the detachment of the bubble from the surface of the guide column, and the structure of the interference line can disrupt the buoyancy balance of the large bubble, thereby ensuring that the large bubble can quickly detach from the surface of the guide column.
[0030] The vibrating section structure can generate vibrations to make the solution inside the tank more thoroughly mixed, thereby ensuring a more uniform distribution of ions in the solution and a stable ion concentration in the solution near the conductive surface during electrolysis. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the overall structure of this application;
[0033] Figure 2 This is a schematic diagram of the conduction stent in this application;
[0034] Figure 3 This is a schematic diagram of the support plate in this application;
[0035] Figure 4 This is a schematic diagram of the conductive surface in this application;
[0036] Figure 5 This is a schematic diagram of the conical protrusion in this application;
[0037] Figure 6 This is a schematic diagram of the conductive pillar in this application;
[0038] Figure 7 This is a schematic diagram of the mounting plate in this application;
[0039] Figure 8 This is a schematic diagram of the support ring structure in this application;
[0040] Figure 9 This is a schematic diagram of the support plate in this application;
[0041] Figure 10 This is a schematic diagram of the vibration groove in this application;
[0042] Figure 11 This is a schematic diagram of the ion exchange membrane in this application.
[0043] The labels in the diagram represent the following: 1. Tank; 2. Cover plate; 3. Vibration section; 31. Support component; 32. Vibration groove; 4. Ion membrane; 5. Conductive support; 6. Connecting pipe; 7. Limiting section; 71. Limiting component; 72. Support ring; 73. Conductive tube; 8. Support plate; 9. Guide section; 91. Conductive surface; 92. Guide column; 93. Guide groove; 94. Conical protrusion; 95. Detachment end; 10. Conductive column; 11. Mounting plate; 12. Piezoelectric ceramic; 13. Interference line. Detailed Implementation
[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0045] Refer to Figure 1 to Figure 11 This application discloses a chlor-alkali electrolyzer for producing hydrogen for pharmaceutical use, including a tank body 1 and a cover plate 2 that is detachably connected to the top of the tank body 1.
[0046] The top of the cover plate 2 is provided with two symmetrically distributed connecting pipes 6, and the center of the inner wall of the tank 1 is fixed with an ion membrane 4.
[0047] The bottom of the cover plate 2 is connected to the conduction bracket 5 through the limiting part 7. Two sets of support plates 8 are fixedly installed at the bottom of the conduction bracket 5. Electrolyte solution is added inside the tank 1, and the cover plate 2 carries the support plates 8 into the tank 1 and ensures that the support plates 8 are in contact with the electrolyte solution.
[0048] When the support plate 8 is connected to the external circuit and energized through the conductive bracket 5, the electrolyte solution is electrolyzed. By connecting the two sets of support plates 8 to the positive and negative terminals of the external circuit respectively, and ensuring that the two sets of support plates 8 are in full contact with the electrolyte solution, the electrolyte solution is electrolyzed through the support plates 8 when the external circuit is energized. This generates chlorine microbubbles on the surface of the support plate 8 connected to the positive terminal and hydrogen microbubbles on the surface of the support plate 8 connected to the negative terminal. Since the top of the cover plate 2 is provided with two independent connecting pipes 6, hydrogen and chlorine are discharged upward from the connecting pipes 6 respectively under the obstruction of the ion membrane 4.
[0049] However, during actual electrolysis, bubbles are precipitated from the surface of the support plate 8. Initially, these are tiny bubbles distributed on the surface of the support plate 8. Because these bubbles hinder the contact between the support plate 8 and the electrolyte solution, they reduce the rate at which ions gain or lose electrons, thus reducing the electrolysis efficiency. Therefore, in order to solve the problem of bubbles obstructing the conductive structure and thus reducing the electrolysis efficiency:
[0050] like Figure 3 , Figure 4 and Figure 5 As shown, the outer surface of the support plate 8 is provided with an insulating layer (the support plate 8 is non-conductive). By providing an insulating layer on the outer surface of the support plate 8, the electrolytic reaction can be prevented from occurring on the surface of the support plate 8, so that the support plate 8 does not participate in the reaction process of the electrolytic solution. The top of the support plate 8 is fixed with four sets of circumferentially distributed guide parts 9 by conductive pillars 10. The support plate 8 is provided with four circumferentially distributed converging channels, and each set of guide parts 9 is symmetrically arranged on both sides of the converging channel.
[0051] The guide part 9 includes a guide post 92 whose bottom is connected to the conductive post 10. The outer surface of the guide post 92 is provided with an insulating layer. The two sides of the outer surface of the guide post 92 are symmetrically and integrally formed with conductive surfaces 91, and the surface of the conductive surfaces 91 is a bare metal surface (the conductive surfaces 91 are conductive).
[0052] The insulating layer provided on the surface of the support plate 8 and the exposed conductive surface 91 of the metal can achieve the effect of electrolysis by replacing the metal surface of the support plate 8 with the surface of the conductive surface 91 (the support plate 8 is not conductive and does not generate bubbles). By providing an insulating layer on the arc-shaped outer surface of the guide column 92, the bubbles generated by electrolysis can be concentrated on the exposed conductive surface 91 of the metal.
[0053] Specifically, the structure of the conductive pillar 10 can ensure the insulation of the surface of the support plate 8 while ensuring the stable electrical conduction of charge to the guide pillar 92 during electrolysis.
[0054] Since the guide part 9 is placed vertically, the microbubbles will move towards the top of the conductive surface 91 under the action of buoyancy. In order to guide the movement of the microbubbles on the surface of the conductive surface 91 and make them leave the surface of the conductive surface 91 quickly, so as to reduce the time that the microbubbles block the conductive surface 91:
[0055] The conductive surface 91 is provided with an inclined guide groove 93, which can guide the upward moving microbubbles and accelerate their movement speed. It should be noted that the guide groove 93 is used to guide the microbubbles, which involves the principle of capillary force and minimum energy.
[0056] Capillary force is a force generated by the interaction between the surface tension of a liquid and the surface of a solid. It drives the liquid to spontaneously flow into narrow gaps or channels. Therefore, during the ascent of microbubbles, they are more likely to enter the guide groove 93 when they come into contact with its edge. The principle of minimum energy states that any system tends to be in its most stable state with the lowest energy. For a system with bubbles on a solid surface, its energy is mainly determined by the interfacial energy of the gas-liquid-solid three-phase contact line.
[0057] The function of the guide groove 93 is to create a local energy minimum point for this system, guiding the bubble into and staying within the guide groove 93 to reduce the energy of the entire system. Once the bubble is "pushed in" or forms within the guide groove 93, its three-phase contact line will perfectly fit the inner wall edge of the guide groove 93. This geometry allows the bubble interface to reach a local minimum. At this point, if the bubble wants to leave the guide groove 93, it must stretch again and overcome that energy barrier, which is very difficult.
[0058] When an external force (such as fluid flow, buoyancy, or substrate tilt) attempts to move a microbubble, the guide groove 93 exhibits its guiding function. The microbubble will not easily "climb" out of the guide groove 93, but will move along the path of least energy, because this is the path of least resistance. The guide groove 93 is like a "track" laid for the microbubble, restricting its lateral movement and constraining its direction of movement to the extension direction of the guide groove 93.
[0059] Based on the above principle, the inclined guide groove 93 can guide the movement of tiny bubbles.
[0060] In order to accelerate the detachment of microbubbles from the surface of the guide part 9, the guide post 92 is also provided with a conical protrusion 94, and the guide groove 93 is inclined towards the conical protrusion 94; due to the guiding effect of the guide groove 93, the microbubbles will move along the guide groove 93 and converge at the conical protrusion 94, which is in a sharp protrusion shape.
[0061] However, the guide groove 93 cannot guide all the microbubbles generated on the conductive surface 91. Some microbubbles that are not guided by the guide groove 93 or have detached from the guide groove 93 will continue to move upward along the conductive surface 91 under the action of buoyancy. Therefore:
[0062] The top of the guide column 92 is integrally formed with a release end 95. Tiny air bubbles that are not guided by the guide groove 93 will move upward to the release end 95.
[0063] The following discussion is divided into two parts:
[0064] On the one hand, for tiny air bubbles that move to the surface of the conical protrusion 94 under the guidance of the guide groove 93;
[0065] As the microbubbles move from the conductive surface 91 to the boundary of the conical protrusion 94, they are affected by the Laplace pressure difference. It should be noted that the Laplace pressure difference is as follows: on the conical structure, the radius of curvature at the narrow end is smaller, so the Laplace pressure is higher; the radius of curvature at the wide end is larger, so the pressure is lower. The bubbles will spontaneously move from the high-pressure region to the low-pressure region.
[0066] Therefore, since the boundary of the conical protrusion 94 is a sloped structure, the sloped structure has a lower Laplace pressure than the grooved structure of the guide groove 93. The Laplace pressure difference can help the microbubbles overcome the "constraint force" from the guide groove 93 and allow the microbubbles to detach from the guide groove 93 and move to the surface of the conical protrusion 94. On the surface of the conical protrusion 94, the microbubbles of the two conductive surfaces 91 converge and combine with each other to form a larger bubble.
[0067] As tiny bubbles converge on the surface of the conical protrusion 94, once the bubbles have combined to a certain extent, the large bubble gradually expands and contacts the top surface of the conical protrusion 94 on the other side, so that the large bubble is "erected" in the gap between the two guide parts 9.
[0068] Through the above guiding effect, the tiny bubbles can be brought closer together and converge. According to the formula for the surface area of a sphere, the surface area of a large bubble composed of the same volume of gas is less than the sum of the surface areas of several small bubbles dispersed from it.
[0069] Therefore, guiding multiple microbubbles to converge into a large bubble can effectively reduce the blocking effect of the bubbles on the conductive surface 91. When the large bubble is "set" between the two guide parts 9, the contact area between the large bubble and the surface of the conical protrusion 94 is reduced. At the same time, the buoyancy of the large bubble is greater than that of the microbubbles, making it easier for the large bubble to detach from the surface of the conical protrusion 94.
[0070] Furthermore, in order to expedite the detachment of large air bubbles from the surface of the conical protrusion 94, an interference line 13 is provided inside the converging groove. The interference line 13 is located between the two guide parts 9. The swinging of the interference line 13 can interfere with the large air bubbles "erected" between the two guide parts 9, thereby breaking the buoyancy balance of the large air bubbles and making it easier for the large air bubbles to detach from the surface of the conical protrusion 94.
[0071] To further improve the interference effect of interference line 13 on large bubbles: such as Figure 6 and Figure 7 As shown, a mounting plate 11 is detachably installed on the bottom of the support plate 8 by bolts. The mounting plate 11 is located directly below the converging channel. A piezoelectric ceramic 12 is fixedly installed on the top of the end of the mounting plate 11 away from the bolts. The piezoelectric ceramic 12 is ring-shaped, and the center of the piezoelectric ceramic 12 is connected to the bottom of the interference line 13. After the mounting plate 11, piezoelectric ceramic 12 and interference line 13 are installed, the external circuit used for electrolysis needs to be switched from DC power supply to DC pulse power supply.
[0072] At this time, a conductive path is formed between the internal threaded hole of the support plate 8 and the screw part and the mounting plate 11, thereby realizing the energizing effect of the piezoelectric ceramic 12. Since the continuous ion flow in the electrolytic solution during the electrolysis process can be regarded as equivalent to a circuit loop, the piezoelectric ceramic 12 vibrates at high frequency under the power supply of DC pulse power. The high frequency vibration of the piezoelectric ceramic 12 plays a vibration transmission effect on the interference line 13, thereby causing the interference line 13 to shake under the action of high frequency vibration. The shaking interference line 13 will frequently sweep across the area between the two conductive parts 9, and under the action of buoyancy, the interference line 13 is always in a vertical state, thereby realizing that the shaking interference line 13 continuously disrupts the buoyancy balance of the large bubble, causing the large bubble to quickly detach from the surface of the conical protrusion 94.
[0073] In order to ensure that the piezoelectric ceramic 12 is in the power supply environment of DC pulse power supply, the surface of the mounting plate 11 also needs to be provided with an insulating layer. The bolt screw part is a bare metal structure, and the outer surface of the bolt nut part is provided with an insulating layer. No insulating layer is provided at the mounting joint between the piezoelectric ceramic 12 and the mounting plate 11. The insulating layer structure can prevent the generation of tiny air bubbles on the surface of the mounting plate 11. At the same time, the bolt connection method ensures the circuit conduction of the piezoelectric ceramic 12.
[0074] The vibration principle of piezoelectric ceramic 12 under DC pulse electrical environment needs to be further explained here;
[0075] Piezoelectric ceramic 12 has an inherent mechanical resonant frequency. When the frequency of the pulse voltage applied to it matches this inherent resonant frequency, resonance occurs. At the resonant point, a very small driving force can excite very strong vibrations, resulting in the highest energy conversion efficiency and the largest vibration amplitude. The resonant frequency of common piezoelectric ceramic 12 is usually between 2.2kHz and 20kHz, which is itself in the high-frequency range.
[0076] On the other hand, for tiny bubbles that move to the top without being guided by the guide groove 93;
[0077] Tiny bubbles that move upward on the conductive surfaces 91 on both sides will converge at the detachment end 95. Since the surface area of the detachment end 95 is much smaller than that of the conductive surfaces 91 on both sides, the tiny bubbles will squeeze each other to form a large bubble due to the reduced surface area. Since the large bubble has a greater buoyancy and a smaller surface area, it is easier for the large bubble to detach from the detachment end 95.
[0078] Specifically, the top of the detachment end 95 is pointed. This pointed structure allows large air bubbles to detach from the top of the detachment end 95 more quickly. It should be noted that on a flat or wide surface, the air bubble will spread out into a "spherical crown" shape, with a relatively large contact diameter and contact area with the surface. It is necessary to overcome a large adhesion force (proportional to the contact area) to detach it. However, on the surface of the detachment end 95, the air bubble can only contact a very small point or area. The contact area is drastically reduced. Since the surface adhesion force that "holds" the air bubble is directly related to the contact area, the smaller the contact area, the weaker the adhesion force.
[0079] Therefore, at the detachment end 95, the bubble is like standing on the tip of a needle, and only a very small force (such as its own buoyancy) is needed to break free. Through the above guiding effect on the bubble, the obstruction of the tiny bubble to the conductive surface 91 can be reduced, and the speed at which the bubble detaches from the surface of the guide part 9 can be accelerated.
[0080] To ensure the completeness of the plan, the structure of the limiting part 7 also needs to be disclosed;
[0081] like Figure 8 As shown, the limiting part 7 includes two limiting members 71 that are slidably disposed at the bottom of the cover plate 2, and the limiting members 71 have a semi-circular protrusion structure;
[0082] The connecting pipe 6 is provided with a conductive pipe 73 for connecting to an external circuit. The outer arc surface of the conductive pipe 73 is damped and fitted with a support ring 72. The outer arc surface of the support ring 72 is provided with an annular groove. The semi-circular protrusion of the limiting member 71 extends into the annular groove. The two limiting members 71 are symmetrically arranged on both sides of the support ring 72. The bottom of the conductive pipe 73 is fixedly connected to the center of the top of the conductive bracket 5. A cable is provided inside the conductive pipe 73.
[0083] By adjusting the height of the support ring 72 on the outer arc surface of the conductive tube 73 and clamping and limiting the support ring 72 with the limiting member 71, the height of the conductive support 5 inside the tank 1 can be adjusted. This allows for adaptive adjustment of the height of the conductive support 5 and the support plate 8 according to the height of the electrolyte solution, ensuring that the guide part 9 is in full contact with the electrolyte solution. The structure of the conductive tube 73 can protect the cable.
[0084] like Figure 4 and Figure 5 As shown, as an improvement, in order to increase the speed at which bubbles move and converge on the surfaces of the conical protrusion 94 and the detachment end 95, fishbone-shaped grooves can also be provided on the surfaces of the conical protrusion 94 and the detachment end 95, with the fishbone-shaped grooves facing the center of the conical protrusion 94 and the tip of the detachment end 95.
[0085] Here we need to explain the principle of how the fishbone-shaped groove guides and accelerates the bubble. When the bubble moves on the surface, the liquid that is in close contact with the solid surface will form a relatively static "boundary layer" that generates resistance. The guiding and accelerating principle of the fishbone-shaped groove is the same as that of the Tesla valve. The secondary flow induced by the fishbone-shaped groove can continuously "sweep" the surface, thinning or even destroying this boundary layer, thereby reducing the resistance to the bubble's movement and thus achieving the effect of accelerating the bubble's movement speed, and causing the bubble to move in the direction that the fishbone-shaped groove is facing.
[0086] To prevent insufficient mixing of the electrolyte solution during electrolysis, which could lead to a low ion concentration near the conductive surface 91, therefore:
[0087] like Figure 9 and Figure 10 As shown, a vibration part 3 is provided at the bottom of the outer surface of the tank 1. The vibration part 3 includes a support member 31 at the bottom of the tank 1. Two vibration grooves 32 that protrude into the tank 1 are symmetrically arranged on both sides of the ion membrane 4 at the bottom of the tank 1. A vibrating element is fixedly provided on the top of the support member 31 and is located inside the recess of the vibration groove 32. The combination of the vibrating element and the vibration groove 32 can achieve the vibration effect of the tank 1. The vibration environment makes the electrolyte solution mix more thoroughly and further makes the ions more evenly distributed in the electrolyte solution. This ensures that the electrolysis efficiency will not decrease due to uneven ion concentration distribution during the electrolysis process, and at the same time avoids the increase in the proportion of side reactions caused by uneven ion distribution.
[0088] In order to enable the electrolysis reaction rate to be adjusted with the external circuit fixed, therefore:
[0089] The support plate 8 has four sets of circumferentially distributed conductive posts 10 on its top, and the guide part 9 has corresponding mounting holes at its bottom. The combination of the conductive posts 10 and the mounting holes allows the guide part 9 to be detachably connected to the top of the support plate 8. Therefore, by installing different numbers of guide parts 9, the electrolysis speed can be controlled. When the conductive posts 10 without the guide parts 9 are exposed in the electrolyte solution, their surface area is much smaller than that of the conductive surface 91, resulting in less electrolytic reaction on the surface of the conductive posts 10, which will not affect the effect of the conductive surface 91.
[0090] To reduce the difficulty of connecting this device to external circuits and ensure stable circuit transmission:
[0091] The outer arc surface of the connecting pipe 6 is provided with a through-hole joint, which is electrically connected to the cable; the through-hole joint and the connecting pipe 6 are provided with a sealing element; the through-hole joint can reduce the difficulty of connecting this device with external voltage equipment, thereby connecting with an external DC pulse power supply through the through-hole joint.
[0092] To prevent the generated gases from mixing, a long strip-shaped sealing element is also required at the center of the bottom of the cover plate 2;
[0093] The inner wall of the tank 1 has mounting grooves on both sides at the center. The mounting grooves contact the two sides of the ion membrane 4, and the elongated sealing element contacts the top of the ion membrane 4. The ion membrane 4 includes a mounting frame and a membrane structure installed inside the mounting frame. The mounting frame tensions the membrane structure. The mounting frame allows the ion membrane 4 to be installed in a tensioned state inside the tank 1. The combination of the ion membrane 4 and the sealing element can isolate the space on both sides inside the tank 1, thereby avoiding the risk of explosion caused by the mixing of hydrogen and chlorine.
[0094] High-purity hydrogen can be produced using a long, strip-shaped sealing element. This high-purity hydrogen is widely used in drug synthesis for catalytic hydrogenation reactions. By introducing hydrogen into unsaturated compounds (such as alkenes and alkynes), saturated or reducing compounds are generated. This process can:
[0095] Improving drug stability: Precisely modifying the drug molecule structure through selective reduction reactions;
[0096] To improve bioavailability and reduce side effects: for example, the synthesis of some antibiotics and anti-tumor drugs depends on hydrogenation reactions;
[0097] High-purity hydrogen (e.g., 99.999%) can prevent impurities (e.g., CO, sulfides) from poisoning the catalyst, ensuring efficient and stable reaction, and guaranteeing the purity and yield of the product.
[0098] In practical applications, the electrolysis effect of the electrolytic cell was tested for different conductive areas, and the test data were summarized in the table below:
[0099] The effect of conductive area on by-product oxygen:
[0100]
[0101]
[0102] Based on the information in the table above, the following conclusions can be drawn:
[0103] In theory, a larger conductive area results in a lower amount of oxygen produced as a byproduct. However, when the conductive area decreases due to the insulating barrier of bubbles, the amount of oxygen produced as a byproduct during the reaction increases. Therefore, it can be concluded that reducing the time and area of bubble blockage on the conductive area can effectively suppress the generation of oxygen as a byproduct in the chlor-alkali industry, thereby avoiding oxidation of ion exchange membrane 4 and a series of problems such as a decrease in the purity of the generated gas.
[0104] Based on the above embodiments, the working principle of this device is as follows:
[0105] Before use, separate the tank body 1 from the cover plate 2, then inject the saturated electrolyte solution into the tank body 1, and then insert and fix the ion membrane 4 at the center of the tank body 1. At this time, the electrolyte solution is located on both sides of the ion membrane 4 and the liquid level is the same. After the cover plate 2 is installed and connected to the top of the tank body 1, the external gas collection container is sealed and connected to the connecting pipe 6. The top of the ion membrane 4 is pressed against the long strip seal. The combination of the ion membrane 4 and the long strip seal achieves the sealing and isolation of the space area on both sides inside the tank body 1.
[0106] Subsequently, the height of the conduction support 5 is adjusted according to the height of the electrolyte solution inside the tank 1. The height of the conduction support 5 is adjusted by moving the support ring 72 at the height position of the outer arc surface of the conduction pipe 73. Then, the support ring 72 is clamped and limited by the limiting member 71 to achieve the effect of fixing the height of the conduction support 5.
[0107] After the height of the conductive support 5 is adjusted, it is connected to an external DC pulse power supply through the docking connector, and the guide part 9 is immersed in the electrolytic solution. The DC power supply is electrically connected to the guide column 92, which causes tiny bubbles to be generated on the surface of the conductive surface 91. Affected by the guide groove 93, the tiny bubbles move and converge in two directions: upward and conical protrusion 94. They achieve the effect of rapid detachment of the bubbles from the surface of the guide part 9 through different methods. During this process, the portion of the conductive surface 91 blocked by bubbles is small, thus making the electrolysis process more stable.
[0108] Another portion of the tiny bubbles that are not guided by the guide groove 93 move upward to the release end 95 due to buoyancy. The sharp protrusion of the release end 95 and the fishbone-shaped grooves on its surface can accelerate the speed at which the bubbles detach from the release end 95.
[0109] Specifically, in the description of this specification, the references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0110] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to well understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims
1. A chlor-alkali electrolytic cell for hydrogen production for pharmaceutical production, comprising a cell body (1) and a cover plate (2) detachably connected to the top of the cell body (1), two symmetrical connection pipes (6) are provided on the top of the cover plate (2), an ion exchange membrane (4) is fixedly arranged at the center of the inner wall of the cell body (1), a conducting support (5) is connected to the bottom of the cover plate (2) through a limiting part (7), a supporting plate (8) is fixedly arranged at the bottom of the conducting support (5), characterized in that: An insulating layer is arranged on the outer surface of the supporting plate (8), and a plurality of circumferentially distributed guide parts (9) are fixedly arranged on the top of the supporting plate (8); The guide part (9) comprises a guide cylinder (92), a separation end (95) is integrally formed on the top of the guide cylinder (92), and conductive surfaces (91) are integrally formed on the two sides of the outer surface of the guide cylinder (92), the surfaces of the conductive surfaces (91) are metal exposed surfaces; An inclined guide groove (93) is arranged on the surface of the conductive surface (91), and the inclined guide groove (93) is inclined towards a conical protrusion (94) arranged on one side of the conductive surface (91); The surfaces of the conductive surfaces (91), the conical protrusion (94) and the separation end (95) are charged.
2. The chlor-alkali electrolyzer for hydrogen production for pharmaceutical production according to claim 1, characterized in that, The supporting plate (8) is provided with a plurality of circumferentially distributed converging grooves, and the guide parts (9) are symmetrically arranged on both sides of the converging grooves and the conical protrusions (94) are close to each other; A mounting plate (11) is detachably mounted on the bottom of the supporting plate (8) through bolts, the mounting plate (11) is located directly below the converging grooves, and a piezoelectric ceramic (12) is fixedly arranged on the top of the end of the mounting plate (11) away from the bolts; The piezoelectric ceramic (12) is annular, an interference line (13) is fixedly arranged at the center of the piezoelectric ceramic (12), and the interference line (13) is located between the two guide parts (9).
3. The chlor-alkali electrolyzer for hydrogen production for pharmaceutical production according to claim 2, characterized in that, An insulating layer is arranged on the arc-shaped outer surface of the guide cylinder (92).
4. The chlor-alkali electrolyzer for hydrogen production for pharmaceutical production according to claim 3, characterized in that, The limiting part (7) comprises two limiting parts (71) slidably arranged on the bottom of the cover plate (2), the limiting parts (71) have a semicircular protruding structure; A support ring (72) is arranged on the outer arc surface of the damping sleeve of the through pipe (73), the outer arc surface of the support ring (72) is provided with an annular groove, the semicircular protruding structure of the limiting part (71) extends into the annular groove, and the two limiting parts (71) are symmetrically arranged on both sides of the support ring (72); The bottom of the through pipe (73) is fixedly connected to the top center of the conducting support (5), and the through pipe (73) is provided with a cable.
5. The chlor-alkali electrolyzer for hydrogen production for pharmaceuticals production according to claim 4, characterized in that, Fishbone-shaped grooves are arranged on the surfaces of the conical protrusions (94) and the separation end (95), and the fishbone-shaped grooves are directed towards the center of the conical protrusion (94) and the top tip of the separation end (95).
6. The chlor-alkali electrolyzer for hydrogen production for pharmaceuticals according to claim 5, characterized in that, An oscillation part (3) is arranged on the outer surface of the cell body (1), the oscillation part (3) comprises a support part (31) arranged on the bottom of the cell body (1), two oscillation grooves (32) protruding into the cell body (1) are symmetrically arranged on the bottom of the cell body (1) on both sides of the ion exchange membrane (4); A vibration part is fixedly arranged on the top of the support part (31), and the vibration part is arranged in the recessed part of the oscillation groove (32).
7. The chlor-alkali electrolyzer for hydrogen production for pharmaceutical production according to claim 6, characterized in that, 8. The chlor-alkali electrolyzer for hydrogen production for pharmaceuticals production according to claim 7, characterized in that, The outer arc surface of the butt joint pipe (6) is provided with a butt joint, the butt joint is electrically connected with the cable, and the butt joint and the through butt joint of the butt joint pipe (6) are provided with a sealing element.
9. The chlor-alkali electrolyzer for hydrogen production for pharmaceuticals production according to claim 8, characterized in that, The bottom center of the cover plate (2) is provided with a long strip-shaped sealing element, and the inner wall center of the groove body (1) is provided with mounting grooves on both sides, which are in contact with the two sides of the ion membrane (4), and the long strip-shaped sealing element is in contact with the top of the ion membrane (4). The ion membrane (4) comprises a mounting frame and a membrane structure mounted inside the mounting frame.
10. The chlor-alkali electrolyzer for hydrogen production for pharmaceuticals production according to claim 9, characterized in that, The surface of the taper protrusion (94) and the separation end (95) is provided with a hydrophobic layer.