Electrical hydrogen permeation assembly based on inorganic proton conductor, box-type furnace and assembly preparation method
By hot-pressing the inorganic proton conductor membrane and the conductive silver ring or Kovar alloy ring in combination with an inert gas box furnace, the airtightness and efficiency problems of the hydrogen separation device are solved, efficient hydrogen separation and hydrogen replenishment are achieved, the cost is reduced, and the stability and production efficiency of the device are improved.
Patent Information
- Application Number
- CN202510988031.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2025-10-17
AI Technical Summary
In the existing technology, hydrogen separation devices have problems such as poor airtightness and low hydrogen separation efficiency. Especially in nuclear fusion reactions, the hydrogen separation efficiency is only 5%, and problems such as shedding and uneven contact area are prone to occur during the hydrogen separation process.
An inorganic proton conductor diaphragm is used to connect a conductive silver ring or conductive Kovar alloy ring to a ceramic tube through hot pressing welding. The silver ring is used as solder and hot pressing welding is performed in an inert gas atmosphere box furnace to ensure that all components are tightly combined. Kovar alloy tubes are used as the gas chamber material to improve airtightness and connection convenience.
The stability and airtightness of the hydrogen separation device are improved, material costs are reduced, and hydrogen separation efficiency is improved. It is suitable for hydrogen isotope separation and hydrogen replenishment in high-temperature environments, and enhances the reliability and production efficiency of the device.
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Figure CN120809301A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of nuclear fusion, in particular to an electro-osmotic hydrogen assembly based on inorganic proton conductor, a box furnace and an assembly preparation method. BACKGROUND
[0002] Nuclear fusion has the characteristics of safety and cleanliness, and does not produce substances that pollute the environment, becoming an important issue for human society. In a nuclear fusion reactor, a mixture of deuterium and tritium is used as fuel, and a large amount of energy is released in a vacuum chamber, and helium gas is generated. Tritium is a radioactive isotope of hydrogen, which is generally produced by neutron bombardment of lithium-6, and then the tritium will be extracted and purified by high-flow helium doped with 0.1% H2 purge gas. To recover tritium from tritium-containing purge gas, hydrogen-helium separation and hydrogen isotope extraction processes are required, which are mainly achieved by combining different traps (cold traps, adsorption columns, low-temperature molecular sieves, hot metal reduction beds, diffusion membranes, etc.) working at different temperatures. There is a problem of adaptability of the low-temperature system device in the high-temperature tritium extraction system (TES system). The use of an electro-osmotic hydrogen assembly based on inorganic proton conductor can make each module in the TES system work at the same temperature, reducing the investment in gas temperature increasing and decreasing equipment and energy loss. At the same time, the H2 after hydrogen isotope separation can also use the electro-osmotic hydrogen assembly in the hydrogen supplement process of adding H2 into the purge gas.
[0003] In the fusion reaction, the accumulation of helium gas and other impurity gases generated by the reaction will cause the plasma to cool down. In order to continue the fusion reaction, the reacted gas must be continuously extracted, i.e. ash gas. At present, the reaction efficiency of deuterium and tritium in the fusion device is relatively low, only 5% of the raw materials undergo nuclear fusion reaction, and a large amount of unreacted deuterium and tritium are discharged together with helium gas in the ash gas. Therefore, in the ash gas treatment (TEP) technology, the problem of hydrogen-helium separation will also be involved.
[0004] The prior art CN117509540A discloses a detachable hydrogen separation test device for NiBZYN diaphragm detection, which uses ceramic flanges to fix and seal the entire hydrogen separation occurrence part. When the flanges are connected, the joint is not tight enough, and there is a problem of poor air tightness. At the same time, in the process of using conductive silver paste to bond the conductive silver wire to the inorganic proton conductor diaphragm in points or surfaces, process defects such as air bubbles in the bonding interface, excessive contact area and insufficient silver paste may occur, thereby reducing the hydrogen separation efficiency or causing the hydrogen separation to fall off. SUMMARY
[0005] The present application aims to overcome the problems in the prior art and provides an electro-osmotic hydrogen assembly based on inorganic proton conductor, a box furnace and an assembly preparation method.
[0006] The purpose of the present application is achieved by the following technical solutions: In a first aspect, an inorganic proton conductor-based electro-osmotic hydrogen assembly is provided, comprising: an inorganic proton conductor membrane; a first conductive lead-out ring and a second conductive lead-out ring, respectively connected to two sides of the inorganic proton conductor membrane by hot-press welding; the first conductive lead-out ring and the second conductive lead-out ring each have a lead-out part for connecting a wire; a first ceramic tube and a second ceramic tube, respectively connected to the outer sides of the second conductive lead-out ring and the second conductive lead-out ring by hot-press welding; a first Kovar alloy tube and a second Kovar alloy tube, respectively connected to the outer sides of the first ceramic tube and the second ceramic tube by silver ring welding hot-press welding.
[0007] In some embodiments, the first conductive lead-out ring and the second conductive lead-out ring are each a conductive silver ring.
[0008] In some embodiments, the first conductive lead-out ring and the second conductive lead-out ring are each a conductive Kovar alloy ring, and the first conductive lead-out ring and the second conductive lead-out ring are respectively connected to the two sides of the inorganic proton conductor membrane by silver ring welding hot-press welding; the first ceramic tube and the second ceramic tube are respectively connected to the outer sides of the second conductive lead-out ring and the second conductive lead-out ring by silver ring welding hot-press welding.
[0009] In some embodiments, the electrolyte of the inorganic proton conductor membrane is a barium zirconate-based material and a barium cerate-based material, and the electrode is a nickel electrode.
[0010] In some embodiments, the barium zirconate-based material contains 0% to 30% of inorganic additives selected from one or more of yttrium oxide, scandium oxide, cerium oxide, gadolinium oxide, nickel oxide, iron oxide, magnesium oxide, aluminum oxide, and ytterbium oxide; the barium cerate-based material contains 0% to 30% of inorganic additives selected from one or more of yttrium oxide, scandium oxide, zirconium oxide, gadolinium oxide, nickel oxide, iron oxide, magnesium oxide, aluminum oxide, and ytterbium oxide.
[0011] In a second aspect, an inert gas atmosphere box furnace for hot-press welding is provided, comprising: the electro-osmotic hydrogen assembly of the first aspect; an inert gas atmosphere box furnace body; a box furnace cavity; a box furnace gas inlet connected to an inert gas pipeline or gas cylinder to introduce inert gas into the furnace cavity; a box furnace gas outlet connected to a waste gas treatment device to discharge other gases in the furnace cavity; a booster weight placed on the electro-osmotic hydrogen assembly 1 to apply pressure to the electro-osmotic hydrogen assembly by its own weight.
[0012] a support placed inside the box furnace cavity to support the electro-osmotic hydrogen assembly.
[0013] In a third aspect, a method for preparing an electrically permeable hydrogen component is provided, using the inert gas atmosphere box furnace described in the second aspect, comprising the following steps: S1: nickel plating on both sides of the inorganic proton conductor membrane; S2: Assembling various parts of the hydrogen permeable component; S3: placing multiple hydrogen permeable components in the chamber of a box-type furnace, and placing pressurizing weights of appropriate weights on each of them; using a bracket to place the hydrogen permeable components and pressurizing weights in layers; S4: After closing the furnace door, inert gas is introduced from the air inlet of the box-type furnace; S5: then slowly raise the temperature to a specified temperature and keep it warm for a period of time; S6: Slowly cool down until it reaches room temperature; S7: After cooling, open the furnace door and take out the device to test whether the components are welded firmly and whether the joints are airtight.
[0014] In some embodiments, the specified temperature in step S5 is 960° C. and the holding time is 10 minutes.
[0015] In some embodiments, the temperature change rate in step S5 does not exceed 10° C. / min.
[0016] In some embodiments, the temperature change rate in step S6 does not exceed 10° C. / min.
[0017] It should be further explained that the technical features corresponding to the above embodiments can be combined or replaced with each other to form a new technical solution if there is no conflict.
[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention replaces the original detachable flange structure with hot-press welding, using a conductive silver ring / conductive Kovar alloy as both the lead-out electrode and the solder. This hot-press brazing method tightly bonds the components together, solving the problem of loose joints when using conductive silver glue or flange connections, and improving the stability, reliability, and airtightness of the hydrogen permeable assembly.
[0019] 2. The conductive silver ring or electro-Kovar alloy ring is directly led out to the part for connecting the wire, which solves the complex problem of leading out the conductive silver wire. In the existing technology, the conductive silver glue is used to bond the wire to the inorganic proton conductor membrane at points or surfaces, which is prone to process defects such as bubbles at the bonding interface, excessive contact area, and too little silver glue, which leads to reduced hydrogen separation efficiency or shedding during hydrogen separation.
[0020] 3. The silver ring serves as a solder to connect adjacent components, and the electrodes on the silver ring can facilitate the connection of wires to the nickel electrodes on both sides of the inorganic proton conductor film.
[0021] 4. The Kovar alloy tube and the ceramic have similar thermal expansion coefficients, and the connection at the unsealed part will not be loose due to thermal stress during heating.
[0022] 5. The hydrogen-helium mixed gas chamber and the pure hydrogen gas chamber after separation both use a Kovar alloy tube as the main body, and the outer end can be processed with threads or other structures for connecting external gas path pipes. Compared with using ceramic materials, it is more convenient to connect with external gas path pipes, and the air tightness at the connection can also be better guaranteed.
[0023] 6. The hot-press welding is performed using a box furnace and a pressurized weight, which is lower in cost than using a traditional vacuum hot-press furnace, and multiple electro-permeable hydrogen assemblies can be processed at the same time, improving production efficiency.
[0024] 7. The preparation method of the present application controls the temperature change rate to avoid the inorganic proton conductor film from being broken due to too fast temperature rise and fall, and prolongs the service life of the box furnace. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 A planing structure schematic diagram of an electro-permeable hydrogen assembly based on an inorganic proton conductor is provided in an example of the present application.
[0026] Figure 2 A structure schematic diagram of an electro-permeable hydrogen assembly based on an inorganic proton conductor is provided in an example of the present application.
[0027] Figure 3 Another planing structure schematic diagram of an electro-permeable hydrogen assembly based on an inorganic proton conductor is provided in an example of the present application.
[0028] Figure 4 Another structure schematic diagram of an electro-permeable hydrogen assembly based on an inorganic proton conductor is provided in an example of the present application.
[0029] Figure 5 A use schematic diagram of an inert gas atmosphere box furnace for hot-press welding is provided in an example of the present application.
[0030] Figure 6 A schematic diagram of a cermet integrated tube is provided in an example of the present application.
[0031] Figure 7 A preparation flowchart of an electro-permeable hydrogen assembly is provided in an example of the present application.
[0032] Wherein, the symbols: 1-electric hydrogen permeation assembly, 101-inorganic proton conductor film, 102-first conductive silver ring, 103-second conductive silver ring, 104-first ceramic tube, 105-second ceramic tube, 106-welded silver ring, 108-first Kovar alloy tube, 109-second Kovar alloy tube, 204-first conductive Kovar alloy ring, 205-second conductive Kovar alloy ring, 3-box furnace body, 301-box furnace cavity, 302-box furnace air inlet, 303-box furnace air outlet, 304-boosting weight, 305-bracket. DETAILED DESCRIPTION
[0033] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0034] In the description of the present application, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are described based on the directions or positional relationships described in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0035] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.
[0036] In view of the technical problems pointed out in the background art, the embodiments provided by the present application are as follows: Referring to Figures 1-2 In an example of the present application, an electric hydrogen permeation assembly for an inorganic proton conductor film is provided. It includes: An inorganic proton conductor membrane 101, which includes a proton conductor membrane and nickel electrodes on both sides of the membrane; A first conductive silver ring 102 and a second conductive silver ring 103, which are respectively welded to both sides of the inorganic proton conductor membrane 101 by hot pressing; both the first conductive silver ring 102 and the second conductive silver ring 103 have lead-out parts for connecting wires; A first ceramic tube 104 and a second ceramic tube 105, which are respectively welded to the outside of the first conductive silver ring 102 and the second conductive silver ring 103 by hot pressing; A first Kovar alloy tube 108 and a second Kovar alloy tube 109, which are respectively welded to the outside of the first ceramic tube 104 and the second ceramic tube 105 by soldering silver ring hot pressing.
[0037] Specifically, in this example, all silver rings (the first conductive silver ring 102, the second conductive silver ring 103, and the soldering silver ring 106) and other components in contact with them are welded together at a relatively high temperature of about 960°C by hot pressing technology. Among them: taking advantage of the low resistivity of silver, the silver is used as solder while leading out pins on both sides of the proton conductor membrane for the connection of the external circuit and the nickel electrodes on both sides of the membrane. Using silver as solder, taking advantage of the low melting point of silver, the components are tightly combined by hot pressing, solving the problem of loose adhesion with conductive silver glue, and improving the stability, reliability, and airtightness of the hydrogen separation experiment. And the conductive silver ring directly leads out the part for connecting the wire, solving the problem of complex conductive silver wire lead-out. At the same time, the lead-out parts of the conductive silver ring are designed in different directions to avoid short circuit when the two conductive silver rings are connected with the wires.
[0038] Further, ceramic tubes are used as insulating materials to achieve electrical insulation between the electrodes on both sides of the inorganic proton conductor membrane and the external metal gas path pipeline. In addition, alumina or other oxide coatings can be used inside the ceramic tube and the Kovar alloy tube to prevent hydrogen permeation.
[0039] In actual production applications, the gas chamber uses Kovar alloy pipe as the main body, and the outer end can be processed into threads or other structures for connecting external gas pipeline, or can be directly welded to the gas pipeline. Specifically, a plurality of components of the application can be connected in parallel as a hydrogen separation matrix and linked to the corresponding gas pipeline of a hydrogen-helium separation system. When linked, the Kovar alloy pipe part of the electro-osmotic hydrogen component can be directly welded to the gas pipeline, or a section of the Kovar alloy pipe can be processed into threads or other structures for connecting the gas pipeline. For example, in TES, CPS, and TEP, the function of hydrogen-helium separation is realized, and the component is connected to the hydrogen-helium mixed gas pipeline on one side and to the hydrogen gas pipeline on the other side. In TES, the function of hydrogen supplement by purge gas is realized, and the component is connected to the gas pipelines with different hydrogen concentrations on both sides, and the voltage applied to the proton conductor on both sides controls the supplement of hydrogen from high concentration to low concentration. It can also be applied to TES technology to realize the function of hydrogen isotope separation. The component is connected to the Q2 (H2, HT, T2) gas pipeline on one side and to the H2 gas pipeline on the other side.
[0040] Compared with the use of ceramic materials, it is more convenient to connect with external gas pipeline, and the air tightness of the connection can also be better guaranteed. However, the metal gas chamber needs to be insulated from the electrode of the inorganic proton conductor film, and cannot be in direct contact, so a ceramic tube is added in the middle to achieve electrical isolation. The reason for using Kovar alloy as the material of the gas chamber instead of other metals is that the thermal expansion coefficient of Kovar alloy is closer to that of ceramic, which can avoid the generation of gaps at the connection due to different expansion degrees during thermal compression welding, further guaranteeing the air tightness of the device.
[0041] More preferably, considering that silver is relatively soft and expensive, to avoid the breakage of the wire connection part of the conductive silver ring due to long-term use, and to reduce costs, as shown in Figures 3-4 The application provides another electro-osmotic hydrogen component based on inorganic proton conductor. The inorganic proton conductor film 101 includes an inorganic proton conductor film and nickel electrodes on both sides of the film; The first conductive Kovar alloy ring 204 and the second conductive Kovar alloy ring 205 are respectively hot-pressed and welded to both sides of the inorganic proton conductor film 101 through the silver ring 106. The first conductive Kovar alloy ring 204 and the second conductive Kovar alloy ring 205 both have lead-out parts for connecting wires.
[0042] The first ceramic tube 104 and the second ceramic tube 105 are respectively hot-pressed and welded to the outer sides of the first conductive Kovar alloy ring 204 and the second conductive Kovar alloy ring 205 through the silver ring 106.
[0043] Specifically, in this example, all the soldered silver rings 106 and other components in contact with them are soldered together at a relatively high temperature of about 960°C by hot pressing technology. Among them: using silver rings as solder, hot pressing is used to make the components tightly combined, solving the problem of not being tightly bonded by using conductive silver adhesive, improving the stability, reliability and air tightness of the hydrogen separation experiment. The use of conductive Kovar alloy rings instead of conductive silver rings in the example to connect the lead-out part of the wire also solves the problem of complex lead-out of conductive silver wires. At the same time, it reduces the demand for silver, effectively reducing the cost of materials; compared with silver, Kovar alloy has higher hardness, and the risk of fracture at the lead-out part is lower during long-term use. By hot pressing, the conductive Kovar alloy ring is connected to the inorganic proton conductor film using the silver ring. During the hot pressing process, silver penetrates into the concave and convex parts of the contact surface, making the conductive Kovar alloy ring and the inorganic proton conductor film tightly combined, avoiding the increase of contact resistance caused by the direct contact of the surface and the formation of micro cracks.
[0044] The main body of the gas chamber and the electrodes at both ends of the inorganic proton conductor film are made of Kovar alloy material, which has a thermal expansion coefficient closer to that of ceramic. During the hot pressing and soldering process, gaps can be avoided at the connection due to different expansion levels, further ensuring the air tightness of the device. The outer end of the Kovar alloy tube can be machined with threads or other structures for connecting external gas pipeline, which is more convenient than using ceramic material for connection, and the air tightness of the connection can also be better guaranteed. At the same time, the metal gas chamber needs to be insulated from the electrodes of the inorganic proton conductor film and cannot be in direct contact, so a ceramic tube is added as a partition.
[0045] Table 1 Length of each component in the longitudinal direction Table 1 gives the length of each component in the longitudinal direction (thickness reference), among which the soldered silver ring 106 can be appropriately increased in thickness to ensure the air tightness and stability of the connection; the conductive silver ring can also be appropriately increased in thickness to prevent the lead-out part of the wire from breaking; the ceramic tube mainly serves to ensure the insulation between the metal body of the gas chamber and the inorganic proton conductor film, and can be appropriately reduced in thickness; the Kovar alloy tube as the main body of the gas chamber is connected to the external gas pipeline at the outer end, and the actual length can be determined according to the actual environmental requirements.
[0046] In addition, a metal-ceramic integrated tube can be considered to reduce the number of parts that need to be soldered. Purchasing a ready-made metal-ceramic integrated tube instead of the Kovar alloy tube and the ceramic tube and the soldered silver ring between them can reduce the need for soldering and make the processing process of the electro-permeable hydrogen assembly simpler, but at the same time, the cost of components will increase. Taking Example 1 as an example, the structure after using a metal-ceramic integrated tube is shown in Figure 6
[0047] In actual production, in order to improve the hydrogen permeation efficiency, multiple electric hydrogen permeation assemblies need to be connected in parallel on the gas pipeline, so batch processing of electric hydrogen permeation assemblies is necessary. The traditional hot pressing furnace is not convenient for batch processing, and a processing method using an inert gas atmosphere box furnace for hot pressing welding is provided.
[0048] Referring to Figure 5 , Figure 5 An inert gas atmosphere box furnace is shown in an example of the present application, which includes: The electric hydrogen permeation assembly 1 can be the structure in the example or the second example.
[0049] The inert gas atmosphere box furnace body 3, the heating element can be a molybdenum-doped iron-chromium-aluminum alloy thermocouple or other heating methods, the heating temperature needs to reach 1000℃, and there is a relatively precise temperature control system.
[0050] The box furnace cavity 301, the cavity volume is selected according to the actual demand, and too large furnace cavity may cause uneven internal temperature, resulting in defective products.
[0051] The box furnace gas inlet 302 is connected to the inert gas pipeline or gas cylinder, and the inert gas is introduced into the furnace cavity.
[0052] The box furnace gas outlet 303 is connected to the exhaust treatment equipment and other exhausts in the furnace cavity.
[0053] The pressure weight 304 is placed on the electric hydrogen permeation assembly 1, and pressure is applied to the electric hydrogen permeation assembly 1 by its own weight.
[0054] The support 305 is placed inside the box furnace cavity 301 and is used to support the electric hydrogen permeation assembly 1.
[0055] Specifically, referring to Figure 7 In this example, the preparation method of the electric hydrogen permeation assembly specifically includes the following steps: S1: Plating nickel on both sides of the inorganic proton conductor film; S2: Assembling each part of the electric hydrogen permeation assembly S3: Multiple electric hydrogen permeation assemblies 1 are placed in the box furnace cavity, and appropriate weight pressure weights 304 are placed on them. More electric hydrogen permeation assemblies and pressure weights are placed in layers using the support 305 to make full use of the furnace cavity space. If the heating furnace cavity internal space is high, the support 305 can be stacked for use to fully utilize the three-dimensional space.
[0056] S4: After closing the furnace door, inert gas is introduced from the box furnace gas inlet 302; S5: Then slowly heat to about 960℃ and keep for 10min; To prolong the service life of the box furnace, the temperature change rate should not exceed 10℃ / min S6: Slowly cool down until room temperature. To avoid the inorganic proton conductor film broken caused by too fast temperature change, and to prolong the service life of the furnace, the temperature change rate should not exceed 10℃ / min.
[0057] S7: After the cooling down, open the furnace door to take out the device, test whether the parts are welded firmly, and whether the connection is airtight.
[0058] The melting point of silver is 962℃, it cannot be directly melted when heated, and it should be welded by external pressure at a temperature close to the melting point. To avoid the surface of the inorganic proton conductor film and other metal parts being oxidized at high temperature, the heating process needs to be carried out in an inert gas environment. The hot pressing welding of the electro-permeable hydrogen assembly requires lower pressure, and using appropriate counterweight pressure can meet the demand. The traditional vacuum hot pressing furnace has a small furnace cavity, which cannot be used for batch production of electro-permeable hydrogen assemblies. Using a box furnace can process multiple devices at the same time, greatly improving the production efficiency and reducing the cost.
[0059] The above specific embodiments are detailed descriptions of the present application, which cannot be considered as limiting the specific embodiments of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions and substitutions can be made without departing from the concept of the present application, which should be considered as belonging to the protection scope of the present application.
Claims
1. An electric hydrogen permeable component based on an inorganic proton conductor, characterized in that: include: Inorganic proton conductor membrane; The first conductive lead-out ring and the second conductive lead-out ring are respectively welded to two sides of the inorganic proton conductor membrane by hot pressing; The first conductive lead-out ring and the second conductive lead-out ring both have lead-out portions for connecting wires; The first ceramic tube and the second ceramic tube are respectively welded to the outer sides of the second conductive lead-out ring and the second conductive lead-out ring by heat pressing; The first Kovar alloy tube and the second Kovar alloy tube are respectively hot-pressed and welded to the outer sides of the first ceramic tube and the second ceramic tube by welding silver rings.
2. The electric hydrogen permeable component based on an inorganic proton conductor according to claim 1, characterized in that: The first conductive lead-out ring and the second conductive lead-out ring are both conductive silver rings.
3. The electric hydrogen permeable component based on an inorganic proton conductor according to claim 1, characterized in that: The first conductive lead-out ring and the second conductive lead-out ring are both conductive Kovar alloy rings. The first conductive lead-out ring and the second conductive lead-out ring are respectively hot-pressed to the two sides of the inorganic proton conductor membrane by welding silver rings; the first ceramic tube and the second ceramic tube are respectively hot-pressed to the outer sides of the second conductive lead-out ring and the second conductive lead-out ring by welding silver rings.
4. The electric hydrogen permeation component based on an inorganic proton conductor according to claim 1, characterized in that: The electrolyte of the inorganic proton conductor membrane is a barium zirconate-based material and a barium ceria-based material, and the electrode is a nickel electrode.
5. The electric hydrogen permeation component based on an inorganic proton conductor according to claim 4, characterized in that: The barium zirconate-based material contains 0% to 30% of an inorganic additive, and the inorganic additive is selected from one or more of yttrium oxide, scandium oxide, cerium oxide, gadolinium oxide, nickel oxide, iron oxide, magnesium oxide, aluminum oxide, and ytterbium oxide; the barium ceria-based material contains 0% to 30% of an inorganic additive, and the inorganic additive is selected from one or more of yttrium oxide, scandium oxide, zirconium oxide, gadolinium oxide, nickel oxide, iron oxide, magnesium oxide, aluminum oxide, and ytterbium oxide.
6. An inert gas atmosphere box furnace for hot pressing welding, characterized in that: include: The hydrogen permeable component according to any one of claims 1 to 5; Inert gas atmosphere box type furnace body; Box furnace cavity; The air inlet of the box-type furnace is connected to the inert gas line or gas cylinder to introduce inert gas into the furnace cavity; The gas outlet of the box-type furnace is connected to the exhaust gas treatment equipment to discharge other gases in the furnace cavity; The booster weight is placed on the hydrogen permeable component 1 and applies pressure to the hydrogen permeable component by its own weight. The bracket is placed inside the chamber of the box-type furnace and is used to support the electric hydrogen permeable components.
7. A method for preparing an electrically permeable hydrogen component, using the inert gas atmosphere box furnace described in claim 6, characterized in that: The following steps are involved: S1: nickel plating on both sides of the inorganic proton conductor membrane; S2: Assembling various parts of the hydrogen permeable component; S3: placing multiple hydrogen permeable assemblies in the chamber of a box-type furnace, and placing pressurized counterweights of appropriate weight on each of them; Use a bracket to place the hydrogen permeable components and booster weights in layers; S4: After closing the furnace door, inert gas is introduced from the air inlet of the box-type furnace; S5: then slowly raise the temperature to a specified temperature and keep it warm for a period of time; S6: Slowly cool down until it reaches room temperature; S7: After cooling, open the furnace door and take out the device to test whether the components are welded firmly and whether the joints are airtight.
8. The method for preparing an electrically hydrogen permeable component according to claim 7, characterized in that: In step S5, the specified temperature is 960° C. and the holding time is 10 minutes.
9. The method for preparing an electrically hydrogen permeable component according to claim 7, wherein: The temperature change rate in step S5 does not exceed 10°C / min.
10. The method for preparing an electrically hydrogen permeable component according to claim 7, characterized in that: The temperature change rate in step S6 does not exceed 10°C / min.
Citation Information
Patent Citations
Detachable hydrogen separation testing device for Ni-BZYN membrane detection
CN117509540A