Plate type preheater for solid oxide electrolytic tank

Abstract

The utility model relates to the technical field of new energy, and discloses a plate-type preheater for a solid oxide electrolytic cell, which comprises a cavity for preheating the electrolytic cell, the interior of the cavity is of a hollow structure, and the cavity is provided with a preheating medium inlet for introducing a preheating medium and a preheating medium outlet for discharging the preheating medium. And a spacer for separating the internal space of the cavity is arranged between the preheating medium inlet and the preheating medium outlet. And the baffle plate arranged inside can guide the preheating medium to flow back and forth along the S-shaped path. During working, a preheating medium is introduced into the cavity from the preheating medium inlet, reaches the preheating medium outlet through the flow guide channel and then is discharged. By means of the baffle plates, vortexes formed by preheating media on the inner wall of the cavity can be destroyed, the preheating efficiency is improved, the air supply uniformity is improved, the maximum temperature difference in the cavity is reduced, and therefore the temperature uniformity is improved; through the square annular structure of the cavity, a large-flow preheating medium can be conveyed to heat a local area.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a plate preheater for a solid oxide electrolytic cell. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] A solid oxide electrolyzer (SOEC) is an electrochemical device operating at high temperatures that efficiently converts electrical energy into chemical energy. It is primarily used for reactions such as the electrolysis of water to produce hydrogen or the electrolysis of carbon dioxide to produce carbon monoxide. SOEC technology is widely considered a key solution for future clean energy production, as it not only effectively utilizes renewable energy but also plays a key role in achieving a low-carbon economy.

[0004] During the operation of a solid oxide electrolysis cell, thermal management is one of the key factors affecting its performance. Solid oxide electrolysis cells typically operate at high temperatures (approximately 700°C to 1000°C). High temperatures help reduce energy consumption during the electrolysis process and improve energy conversion efficiency. Therefore, a preheater is necessary to ensure a high-temperature reaction environment in the solid oxide electrolysis cell. (The preheater's primary function is to preheat the electrolysis cell, not the feed gas.)

[0005] In industrial heat exchange processes, efficient utilization of the preheating medium is crucial for improving energy efficiency and reducing energy consumption. In traditional preheater designs, the flow of the preheating medium within the cavity is often accompanied by the formation of eddies, which reduce heat exchange efficiency and create temperature gradients along the cavity walls, leading to uneven heat energy distribution. Furthermore, air supply uniformity is a key factor influencing preheater performance. Uneven air supply can lead to overheating or undercooling in certain areas, compromising overall heating effectiveness and energy efficiency. Summary of the Invention

[0006] In response to the above technical defects, the present invention proposes a plate preheater for a solid oxide electrolytic cell. During operation, the preheating medium enters the cavity from the preheating medium inlet, flows back and forth along an S-shaped path under the guidance of the baffle, and is discharged from the cavity after reaching the preheating medium outlet.

[0007] A plate-type preheater for a solid oxide electrolytic cell includes a cavity for preheating the electrolytic cell. The cavity has a hollow interior and is provided with a preheating medium inlet for introducing a preheating medium and a preheating medium outlet for discharging the preheating medium. A spacer is provided between the preheating medium inlet and the preheating medium outlet to separate the cavity interior. The hollow cavity provides effective space for the flow of the preheating medium, ensuring efficient heat exchange.

[0008] The cavity is a square ring structure. The square ring cavity design can optimize the fluid flow path and enhance the preheating effect.

[0009] The cavity is provided with a baffle, which helps guide the flow of the preheating medium, so that the heat is evenly distributed and the heat exchange efficiency is improved.

[0010] The baffles are sequentially connected to the bottom and top of the cavity at intervals, and the length of the baffles does not exceed the height of the cavity. Appropriate baffle length design can avoid the formation of flow dead zones in the cavity, ensuring effective circulation and uniform distribution of the preheating medium.

[0011] The length of the baffles is 3 / 4-7 / 8 of the height of the cavity interior space, and the distance between adjacent baffles is the difference between the baffle length and the cavity interior space height. The length of the baffles is preferably 4 / 5 of the cavity interior space height. Reasonable spacing between baffles can enhance the turbulent flow characteristics of the medium and improve heat exchange efficiency.

[0012] The connection between the baffles and the cavity forms an angle, and the angles are all equal. The equal angle design between the baffles and the cavity helps to form a stable flow pattern and further improve thermal efficiency.

[0013] The baffle and the cavity are made of high temperature resistant materials.

[0014] A sensor is provided in the cavity, which is a temperature sensor. The sensor can monitor the working status in real time to ensure safe and efficient operation.

[0015] The preheating medium inlet and the preheating medium outlet are respectively arranged at both ends of the cavity. The preheating medium inlet and the preheating medium outlet are respectively arranged at both ends of the cavity, which helps to optimize the fluid flow path and reduce pressure loss.

[0016] The cavity is connected to the electrolytic cell support via the support legs, thereby stabilizing the device and ensuring that no displacement occurs during operation.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] The utility model utilizes baffles to disrupt eddies formed by the preheating medium on the inner wall of the cavity, improving preheating efficiency. It also significantly increases air supply uniformity, reducing the maximum temperature difference within the cavity, thereby improving temperature uniformity. The square ring structure of the cavity allows for the transmission of a large flow of preheating medium to heat a localized area. In summary, the utility model offers the advantages of high preheating efficiency and strong temperature uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more apparent.

[0020] Figure 1 This is a schematic diagram of the structure of the utility model.

[0021] Figure 2 It is a side view of the utility model.

[0022] Figure 3 This is a cross-sectional view of the utility model.

[0023] Figure 4 This is a structural diagram of another embodiment of the present invention. DETAILED DESCRIPTION

[0024] The reference numerals in the accompanying drawings are 1-support leg; 2-baffle; 3-cavity; 4-preheating medium inlet; 5-preheating medium outlet.

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] like Figure 1-3 As shown, a plate preheater for a solid oxide electrolytic cell includes a cavity 3 for preheating the electrolytic cell. The interior of the cavity 3 is a hollow structure. The cavity 3 is provided with a preheating medium inlet 4 for introducing a preheating medium, and a preheating medium outlet 5 for discharging the preheating medium. An isolation sheet is provided between the preheating medium inlet 4 and the preheating medium outlet 5 for separating the internal space of the cavity 3.

[0027] The cavity 3 is a square ring structure.

[0028] Baffles 2 are provided inside the cavity 3. The baffles 2 are sequentially connected to the bottom and top of the cavity 3 at intervals. The length of the baffles 2 does not exceed the height of the interior space of the cavity 3. The length of the baffles 2 is 3 / 4-7 / 8 of the height of the interior space of the cavity 3, and the distance between adjacent baffles 2 is the difference between the length of the baffles 2 and the height of the interior space of the cavity 3.

[0029] The baffle 2 and the cavity 3 are made of high temperature resistant materials.

[0030] A sensor is provided in the cavity 3 , and the sensor is a temperature sensor.

[0031] The preheating medium inlet 4 and the preheating medium outlet 5 are respectively provided at two ends of the cavity 3 .

[0032] The cavity 3 is connected to the electrolytic cell support via the support leg 1 .

[0033] like Figure 4 As shown, in another embodiment, the connection between the baffle 2 and the cavity 3 forms an angle, and the angles are equal.

[0034] The steps for using the device are as follows:

[0035] Step 1: Prepare the equipment and ensure that the preheater (chamber) and its connecting pipes, valves, sensors and other components are intact. Check and confirm that all connections are well sealed to avoid leakage.

[0036] Step 2: Connect the preheating medium. Connect the preheating medium inlet 4 to the preheating medium source, ensuring a secure connection. Connect the preheating medium outlet 5 to the preheating medium recovery device to ensure smooth medium reuse.

[0037] Step 3: Start the equipment, open the valve for the preheating medium source, and slowly adjust the flow control valve to begin introducing the preheating medium. The preheating medium, guided by the baffles, flows back and forth along an S-shaped path. Monitor the temperature sensor to ensure that the equipment is operating within a safe range.

[0038] The present invention provides a concept and method for a plate-type preheater for a solid oxide electrolytic cell. There are numerous methods and approaches for implementing this technical solution. The foregoing merely represents a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A plate preheater for a solid oxide electrolytic cell, characterized in that: The invention comprises a cavity (3) for preheating an electrolytic cell, wherein the interior of the cavity (3) is a hollow structure, the cavity (3) is provided with a preheating medium inlet (4) for introducing a preheating medium, and a preheating medium outlet (5) for discharging the preheating medium, and an isolation sheet for separating the internal space of the cavity (3) is provided between the preheating medium inlet (4) and the preheating medium outlet (5).

2. The plate preheater for a solid oxide electrolytic cell according to claim 1, characterized in that: The cavity (3) is a square ring structure.

3. The plate preheater for solid oxide electrolysis cell according to claim 2, characterized in that: A baffle (2) is provided inside the cavity (3).

4. The plate preheater for a solid oxide electrolytic cell according to claim 3, characterized in that: The baffles (2) are sequentially connected to the bottom and top of the cavity (3) at intervals, and the length of the baffles (2) does not exceed the height of the internal space of the cavity (3).

5. The plate preheater for a solid oxide electrolytic cell according to claim 4, characterized in that: The length of the baffle (2) is 3 / 4-7 / 8 of the height of the internal space of the cavity (3), and the distance between adjacent baffles (2) is the difference between the length of the baffle (2) and the height of the internal space of the cavity (3).

6. The plate preheater for a solid oxide electrolytic cell according to claim 3, characterized in that: An included angle is formed at the connection between the baffle (2) and the cavity (3), and the included angles are all equal.

7. The plate preheater for a solid oxide electrolytic cell according to claim 3, characterized in that: The baffle (2) and the cavity (3) are made of high-temperature resistant materials.

8. The plate preheater for a solid oxide electrolytic cell according to claim 1, characterized in that: A sensor is provided in the cavity (3), and the sensor is a temperature sensor.

9. The plate-type preheater for a solid oxide electrolytic cell according to claim 1, characterized in that: The preheating medium inlet (4) and the preheating medium outlet (5) are respectively arranged at two ends of the cavity (3).

10. The plate-type preheater for a solid oxide electrolytic cell according to claim 1, characterized in that: The cavity (3) is connected to the electrolytic cell support via the support legs (1).

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