Sintering apparatus of metal support type monomer and continuous sintering device of metal support type monomer

Abstract

The application provides a sintering device for metal support type monomers, which comprises a box body and a heating component arranged in the box body; the heating component comprises a radiation heating unit, a support body protective clothing, a sintering monomer carrier and a cooling module arranged in sequence; and the sintering monomer carrier is used for supporting the sintering monomer. The radiation heating unit in the sintering device has high heating efficiency when heating the sintering monomer; the cooling module can keep the metal support of the sintering monomer in a low temperature zone, so that the oxidation-reduction reaction of the metal can be avoided. The application further provides a continuous sintering device for metal support type monomers, wherein the sintering monomer carrier is a movable structure similar to a conveying belt, so that the continuous and uninterrupted sintering of the sintering monomer can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-temperature sintering devices, in particular to a sintering device for metal support type single cells and a continuous sintering device for metal support type single cells. BACKGROUND

[0002] The metal support type solid oxide fuel cell single cells are usually prepared by high-temperature furnace sintering, and the high-temperature furnace usually uses a muffle furnace with electric heating. In order to form a dense ceramic electrolyte, the heating temperature in the furnace is usually above 1000 DEG C. The heating elements of the existing high-temperature furnace are mostly resistance wires, and the heating efficiency is low. In addition, a plating film needs to be added to the surface of the metal support layer to prevent the metal from undergoing oxidation-reduction reaction at high temperature. At the same time, the traditional sintering device for metal support type solid oxide fuel cell single cells has small capacity and is difficult to sinter a large number of single cells at the same time. In order to ensure the uniformity of the temperature distribution in the internal space, the space of the traditional muffle furnace with electric resistance wires as heating elements is difficult to be enlarged. Furthermore, the traditional sintering technology is difficult to achieve continuous, uninterrupted and assembly line production. SUMMARY

[0003] The technical problem solved by the present application is to provide a sintering device for metal support type single cells, which has high heating efficiency and can avoid oxidation-reduction reaction of the metal support surface of the sintered single cell.

[0004] The present application provides a sintering device for metal support type single cells, which comprises a box body and a heating component arranged in the box body. The heating component comprises a radiation heating unit, a support body protective clothing, a sintered single cell carrier and a cooling module arranged in sequence. The sintered single cell carrier is used to support the sintered single cell. The radiation heating unit in the sintering device provided by the present application has high heating efficiency when heating the sintered single cell. The cooling module can keep the metal support of the sintered single cell in a low temperature zone at all times, so that oxidation-reduction reaction of the metal can be avoided.

[0005] The present application also provides a continuous sintering device for metal support type single cells, which comprises a radiation heating unit, a sintering box body, a sintered single cell carrier and a cooling support body. The sintered single cell carrier is movable and has a structure similar to a conveyor belt, so that continuous and uninterrupted sintering of the sintered single cell can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 The present application provides a sintering device for metal support type single cells, which comprises a box body and a heating component arranged in the box body. The heating component comprises a radiation heating unit, a support body protective clothing, a sintered single cell carrier and a cooling module arranged in sequence. The sintered single cell carrier is used to support the sintered single cell. The radiation heating unit in the sintering device provided by the present application has high heating efficiency when heating the sintered single cell. The cooling module can keep the metal support of the sintered single cell in a low temperature zone at all times, so that oxidation-reduction reaction of the metal can be avoided.

[0007] Figure 2 The present application provides a sintering device for metal support type single cells, which comprises a box body and a heating component arranged in the box body. The heating component comprises a radiation heating unit, a support body protective clothing, a sintered single cell carrier and a cooling module arranged in sequence. The sintered single cell carrier is used to support the sintered single cell. The radiation heating unit in the sintering device provided by the present application has high heating efficiency when heating the sintered single cell. The cooling module can keep the metal support of the sintered single cell in a low temperature zone at all times, so that oxidation-reduction reaction of the metal can be avoided.

[0008] Figure 3 The present application provides a sintering device for metal support type single cells, which comprises a box body and a heating component arranged in the box body. The heating component comprises a radiation heating unit, a support body protective clothing, a sintered single cell carrier and a cooling module arranged in sequence. The sintered single cell carrier is used to support the sintered single cell. The radiation heating unit in the sintering device provided by the present application has high heating efficiency when heating the sintered single cell. The cooling module can keep the metal support of the sintered single cell in a low temperature zone at all times, so that oxidation-reduction reaction of the metal can be avoided.

[0009] Figure 4 For Figure 3 a decomposition schematic view. DETAILED DESCRIPTION

[0010] For a further understanding of the application, preferred embodiments thereof will be described in conjunction with examples, it being understood, however, that this description is made only by way of further illustration and not as a limitation on the right claimed.

[0011] In view of the problems of low heating efficiency of metal support type battery monomer and redox reaction on the surface of the support metal layer in the prior art, the application provides a sintering equipment for metal support type monomer, which introduces a radiation heating unit and a cooling module, realizes rapid heating and avoids the problem of redox reaction on the surface of the support metal, and the sintering equipment for metal support type monomer provided by the application is as shown in FIG. Figure 1 The sintering equipment for metal support type monomer provided by the application is as shown in FIG.

[0012] The heating component includes a radiation heating unit, a support body protective clothing, a sintering monomer carrier and a cooling module arranged in sequence; and the sintering monomer carrier is used for supporting the sintering monomer.

[0013] In the sintering equipment, the radiation heating unit is a heating component, which is used for irradiating the metal support type monomer to complete the sintering of the monomer. In the application, the sintering equipment is applied to the sintering of a metal support type solid oxide fuel cell monomer, and in this case, the radiation heating unit is used for irradiating the metal support type solid oxide monomer cell to complete the sintering of the electrolyte. The radiation heating unit is modularly arranged, and one or more radiation heating units can be arranged according to the size of the heating box, which contains an independent radiation heater and a temperature control system, can monitor the surface temperature of the monomer cell and keep the surface of the cell at a set temperature range by adjusting the radiation power. The radiation heating unit can be realized by common heat radiation modes such as infrared radiation, laser radiation or microwave radiation.

[0014] In the present application, the radiation heating unit and the support body protective clothing are provided with a radiation heating unit protective cover for preventing the contamination of the sintered cell by the radiation ions entering the heating box. In the specific application of the present application, the radiation ions entering the heating box contaminate the electrode of the battery cell. The radiation heating unit protective cover is a transparent material with a certain thickness, the size and number of which correspond to the radiation heating unit, and the modular arrangement is realized.

[0015] The support body protective clothing is used for the protection and heat insulation of the support body of the sintered cell, which can prevent the support body from being heated by radiation and keep the support body of the sintered cell at a lower temperature. The support body protective clothing has a certain thickness and is opaque, has a heat preservation and insulation function, the number of which corresponds to the radiation heating unit, and the size corresponds to the metal support type sintered cell. The metal support part of the metal support type sintered cell can be completely covered by the support body protective clothing.

[0016] The sintered cell carrier is used to carry the metal support type sintered cell and transfer the heat of the cell support metal to the cooling module to keep the temperature of the support metal at a set value. The sintered cell carrier is a high-temperature resistant material with good heat conduction, and the upper surface, i.e. the surface in contact with the sintered cell, is provided with temperature sensor mounting holes. The position of the mounting hole can be arranged according to the number of sintered cells carried, which can be arranged in a matrix form, such as a row of a column, to realize temperature detection at different positions.

[0017] The cooling module is used to cool the sintered cell carrier, the sintered cell metal support body. The cooling module structure is shown in Figure 2 The cooling module structure is shown in

[0018] The inner surface of the box is provided with heat-resistant insulation material for maintaining the temperature inside the box at a set value. The box is provided with a box protective gas outlet valve and a box protective gas inlet control valve, and temperature sensors and flow control valves are installed on the box protective gas outlet valve and the box protective gas inlet control valve, so that the box is always maintained in a protective gas atmosphere, and the pressure and temperature of the protective gas in the box are controlled. The gas is inert gas or reducing gas, such as nitrogen, helium, hydrogen, carbon monoxide, etc., which can maintain the pressure in the box within a certain range; in a specific embodiment, the box can be protected by vacuumizing.

[0019] According to the present application, when the sintering device of the metal support type single cell sintering device sintering the metal support type single cell, the specific operation method is as follows: the metal support type single cell is placed in the sintering single cell carrier and covered with the support protective clothing, the protective gas or reducing gas is introduced into the box through the box protective gas outlet valve and the box protective gas inlet control valve, and the gas is controlled at a certain pressure, the radiation heating unit is started to irradiate the surface of the single cell, so that the surface temperature rises rapidly; the cooling module introduces cooling medium through the cooling medium outlet valve and the cooling medium inlet flow control valve, and controls the temperature of the single cell carrier to be at a set value.

[0020] Further, the present application also provides a continuous sintering device for metal support type single cell, which comprises a radiation heating unit, a sintering box, a sintering single cell carrier and a cooling support body; a movable sintering single cell carrier for supporting a plurality of cell single cells is arranged between the sintering box and the cooling single cell carrier, and the radiation heating unit is arranged on the sintering box to form a closed space for simultaneous heating of a plurality of cell single cells.

[0021] The continuous sintering device provided by the present application can realize continuous and uninterrupted sintering of single cells. The specific device schematic diagram is shown in Figure 3 and Figure 4 , wherein 12 is a radiation emitting unit, 13 is a protective gas inlet control valve, 14 is a sintering box, 15 is a protective gas outlet control valve, 16 is a cooling agent outlet control valve, 17 is a cooling support body with cooling function, 18 is a cooling agent inlet control valve, 19 is a sintering single cell carrier, and 20 is a sintering single cell.

[0022] Similarly, the sintering box 14 is provided with a support protective clothing near the end of the radiation heating unit 12, and a radiation heating unit 12 and a support protective clothing are arranged between the radiation heating unit 12 and the support protective clothing.

[0023] Furthermore, the sintering chamber 14 is provided with a protective gas inlet control valve 13 and a protective gas outlet control valve 15, and the cooling support 17 is provided with a coolant inlet control valve 18 and a coolant outlet control valve 19.

[0024] The continuous sintering apparatus provided in this application is mainly used for sintering fuel cells. The radiant heating unit 12 is a radiant heating module that can continuously radiate heat multiple sintered cells. Protective gases or reducing gases, such as nitrogen, hydrogen, and helium, are introduced into the sintering chamber 14 through a protective gas inlet control valve 13 and a protective gas outlet control valve 15. The cooling support 17 has a cooling function and internal cooling channels, which can cool the metal carrier of the fuel cell during sintering. The metal-supported solid oxide fuel cell cell carrier 19 is a continuous, movable structure that enables continuous and uninterrupted sintering of solid oxide fuel cell cells.

[0025] The process of continuously and uninterruptedly sintering several sintered cells using metal-supported solid oxide fuel cell cells as the sintering cells is as follows: the metal-supported solid oxide fuel cell cells 20 are placed on the metal-supported solid oxide fuel cell cell carrier 19, which is a conveyor belt-like structure that can hold multiple cells; the unsintered cells enter the sintering chamber 14 sequentially through 19, and rapidly heat up under the irradiation of the radiant heating unit 12. As the metal-supported solid oxide fuel cell cell carrier 19 moves, the cells slowly move forward in the sintering chamber 14. By controlling the moving speed of the metal-supported solid oxide fuel cell cell carrier 19, the cells are sintered after passing through the space of the sintering chamber 14.

[0026] In the continuous sintering apparatus for the aforementioned metal-supported monomers, the specific selection of each part is the same as that of the sintering equipment for the metal-supported monomers, and will not be repeated here.

[0027] To further understand the present invention, the sintering equipment for metal-supported monomers provided by the present invention will be described in detail below with reference to embodiments. The scope of protection of the present invention is not limited by the following embodiments.

[0028] Example

[0029] A sintering apparatus for a metal-supported solid oxide fuel cell cell, the structure of which is as follows: Figure 1As shown, it includes a housing and a heating element located inside the housing. The emitting device includes a radiant heating unit, a radiant heating unit protective cover, a support protective clothing, a single cell carrier and a cooling module, a cooling medium inlet flow control valve and a cooling medium outlet valve disposed on the cooling module, a protective gas outlet valve and a protective gas inlet control valve on the housing, and a metal-supported solid oxide single cell placed on the single cell carrier.

[0030] During the sintering of solid oxide cells, metal-supported solid oxide cells are placed on a cell carrier and covered with a protective cover. Protective or reducing gases are introduced into the cell housing through the protective gas outlet valve and the protective gas inlet control valve, maintaining a certain pressure. A radiant heating unit is activated to irradiate the electrolyte surface of the cell, causing a rapid increase in surface temperature within a very short time. Based on the sintering technology requirements, the electrolyte surface temperature is controlled within a specific range and maintained for a certain period. Because the non-electrolyte metal surface of the cell is covered by the protective cover, it receives less heat radiation, resulting in a significantly lower surface temperature than the electrolyte surface. Simultaneously, the housing is filled with protective or reducing gases, making it difficult for oxidation-reduction reactions to occur in the non-electrolyte metal area of ​​the cell carrier, thus protecting the cell carrier. A cooling module introduces cooling media through a cooling medium outlet valve and a cooling medium inlet flow control valve. Flow control maintains the cell carrier temperature at a set value, further ensuring the cell carrier temperature remains within a low range.

[0031] Traditional sintering equipment, such as muffle furnaces, has a low heating rate, typically 10°C / min. The sintering device of this invention, utilizing radiative heating, can achieve a heating rate exceeding 100°C / min; it also allows for flexible control of the heating rate, improving the uniformity of internal temperature distribution. Simultaneously, it can improve energy utilization efficiency and reduce energy consumption by more than 50%. Furthermore, the non-electrolyte portion of the fuel cell unit's metal support is covered with a protective covering, preventing the metal support from absorbing radiation and heating up, thus preventing oxidation.

[0032] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sintering apparatus for a metal-supported monomer, comprising a housing and a heating element disposed inside the housing; The heating component includes a radiant heating unit, a support protective suit, a sintered monomer carrier, and a cooling module arranged in sequence; the sintered monomer carrier is used to support the sintered monomer. The cooling module is equipped with a cooling channel, a cooling medium outlet valve, and a cooling medium inlet flow control valve. A temperature sensor is installed on the cooling medium inlet flow control valve. The cooling module ensures that the metal support of the sintered monomer is always in a low-temperature zone, thus preventing oxidation-reduction reactions in the metal.

2. The sintering equipment according to claim 1, characterized in that, A protective cover for the radiant heating unit is provided between the radiant heating unit and the protective clothing of the support body.

3. The sintering equipment according to claim 1 or 2, characterized in that, The enclosure is equipped with a protective gas inlet control valve and a protective gas outlet valve, and the inner surface of the enclosure is coated with thermal insulation material.

4. The sintering equipment according to claim 1 or 2, characterized in that, The number of the radiant heating units is ≥1, and each radiant heating unit includes a radiant heater and a temperature control system; the heat radiation mode of the radiant heating unit is infrared radiation, laser emission or microwave radiation.

5. The sintering equipment according to claim 1 or 2, characterized in that, The cooling channels are arranged in a single layer, multiple layers, serpentine, or Z-shaped manner.

6. The sintering equipment according to claim 5, characterized in that, The cooling medium is selected from silicone oil, air or nitrogen.

7. The sintering equipment according to claim 1, characterized in that, The protective clothing for the support body is opaque and has thermal insulation properties, and the size of the protective clothing for the support body corresponds to that of the sintered monomer.

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