Drying and dewatering device for solid oxide electrolytic tank

Abstract

The utility model discloses a drying and dewatering device for a solid oxide electrolytic tank, which comprises a barrel body internally provided with a heating barrel, a spiral guide plate is arranged between the barrel body and the heating barrel, a drying agent is filled on the spiral guide plate, the barrel body is provided with a first medium interface for introducing a pre-drying medium, and a second medium interface for introducing a pre-drying medium is arranged on the barrel body. The third medium connector is used for discharging the dried medium, the top of the barrel is detachably connected with a sealing cap, and a discharging opening is formed in the lower portion of the barrel. The barrel body is provided with a second medium interface for introducing a purging medium, the second medium interface is connected with the heating barrel, and the purging medium is discharged through the first medium interface after passing through the heating barrel and being in contact with the drying agent. A gas medium can be guided to move in a rotational flow state through the barrel body and the spiral flow guide plate, so that the pre-drying medium is in full contact with the drying agent. And the purging medium heated by the electric heater desorbs moisture in the drying agent, so that the regeneration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a drying and water removal device 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] Solid oxide electrolysis cells (SOCEs) produce hydrogen by electrolyzing water at high temperatures, offering advantages in high efficiency and environmental friendliness, particularly in renewable energy and energy storage. However, in practice, the electrolysis process is often accompanied by the generation of water vapor, necessitating the drying of the gaseous medium entering the electrolysis cell. Otherwise, this process can compromise electrolysis efficiency and the stability of the electrode materials.

[0004] The gas flow path in traditional drying towers is relatively direct, resulting in uneven contact between the gas medium and the desiccant, which leads to low local drying efficiency and affects overall performance. External structures usually cannot fully utilize the heat generated by the heating device, resulting in large heat losses. At the same time, the heat utilization efficiency of the purge gas is low, and the desorption effect of the desiccant is difficult to ensure, affecting regeneration efficiency. The external structure increases the size of the equipment, making the overall device relatively bulky and difficult to integrate into systems with limited space, especially in industrial applications. Summary of the Invention

[0005] In view of the above technical problems, the present invention provides a drying and water removal device for a solid oxide electrolytic cell.

[0006] The device includes a cylinder with a heating cylinder inside, a spiral guide plate is provided between the cylinder and the heating cylinder, a desiccant is provided on the spiral guide plate, the cylinder is provided with a first medium interface for introducing a pre-dried medium, and a third medium interface for discharging the dried medium, a sealing cap is detachably connected to the top of the cylinder, and a discharge port is provided at the bottom of the cylinder.

[0007] The sealing cap (2) is connected to the cylinder (13) by bolt locking, and a mica sealing gasket is provided between the two. The discharge port (9) is connected to the cylinder (13) by welding, and the end cover of the discharge port (9) is connected to the shell by bolt locking, and a mica sealing gasket is provided between the two. When the service life of the desiccant reaches the failure threshold, the expired desiccant is discharged through the discharge port and refilled with new desiccant through the detachable sealing cap.

[0008] Furthermore, the cylinder is provided with a second medium interface for introducing a purge medium, the second medium interface is connected to the heating cylinder, the heating cylinder is connected to the cylinder, and the purge medium is discharged through the first medium interface after passing through the heating cylinder and contacting with the desiccant.

[0009] Furthermore, the cylinder is provided with a first sieve plate and a second sieve plate, the first medium interface passes through the second sieve plate, the third medium interface passes through the first sieve plate, and the pre-dried medium is dried and discharged through the first medium interface, the second sieve plate, the first sieve plate and the third medium interface in sequence.

[0010] Furthermore, the surface of the first sieve plate is provided with evenly arranged ventilation grooves, and the ventilation groove holes are 5 to 10 mm higher than the surface of the first sieve plate; the surface of the second sieve plate is provided with evenly arranged ventilation grooves, and the ventilation groove holes are 5 to 10 mm higher than the surface of the second sieve plate.

[0011] Furthermore, the spiral guide plate is connected to the outer wall of the heating cylinder. The spiral guide plate can directly transfer heat from the heating cylinder, so that the desiccant on the spiral guide plate can better maintain the temperature during operation, thereby promoting the drying effect.

[0012] Furthermore, the spiral guide plate includes a plurality of sub-guide plates, and the spacing between the sub-guide plates is the same, which can ensure that the flow speed and direction of the gas in the cylinder remain consistent and avoid different changes in flow speed.

[0013] Furthermore, a first temperature measuring blind tube is provided on the side of the cylinder, and a second temperature measuring blind tube is provided on the top of the cylinder. The first temperature measuring blind tube and the second temperature measuring blind tube are respectively used to monitor the temperature at different positions of the cylinder.

[0014] Furthermore, a sewage outlet is provided at the bottom of the cylinder, which is used to remove moisture and impurities generated during the drying process.

[0015] Furthermore, the electric heater includes an electric heating core, a flat-weld flange, and a junction box. Fins are connected to the core of the electric heating core, and the outer edges of the fins are vertically spaced 1 to 2 mm from the inner wall of the heating tube. The fins can increase the contact area with the medium, improve heat exchange efficiency, accelerate heat transfer, and thus enhance the heating effect.

[0016] Under the drying condition, the pre-drying medium is introduced from the first medium interface, and after being evenly treated by the sieve plate, it is fully in contact with the desiccant on the spiral guide plate, and is discharged from the third medium interface after being adsorbed and dehydrated by the desiccant; under the regeneration condition, the purge medium is introduced into the heating cylinder of the drying tower from the second medium interface, and after being heated by the electric heater, the desiccant is subjected to thermal desorption and water removal treatment, and finally discharged from the first medium interface.

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

[0018] The utility model can evenly distribute the gas medium through the sieve plate; the gas medium can be guided to move in a swirl state through the cylinder and the spiral guide plate, so that the pre-dried medium and the desiccant are in more complete contact, thereby improving the drying efficiency; the moisture in the desiccant is desorbed by the high-temperature purge medium heated by the electric heater, and the waste heat of the electric heater can be transferred to the desiccant through the heating cylinder and the spiral guide plate, thereby reducing heat loss and improving the regeneration efficiency; in addition, the electric heater is fixed to the heating cylinder by a flange connection, and the overall structure is more compact compared to the traditional electric heater external drying tower. In summary, the utility model has the advantages of high efficiency, low heat loss and compact structure. 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 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0021] The legend in the accompanying drawings is: 1-first sieve plate; 2-sealing cap; 3-third medium interface; 4-first medium interface; 5-second sieve plate; 6-second medium interface; 7-electric heater; 8-drain outlet; 9-discharge outlet; 10-first temperature measuring blind pipe; 11-heating cylinder; 12-spiral guide plate; 13-cylinder body; 14-second medium interface.

[0022] like Figure 1 As shown, a drying and dewatering device for a solid oxide electrolytic cell includes a cylinder 13 with a heating cylinder 11 inside, a spiral guide plate 12 is provided between the cylinder 13 and the heating cylinder 11, and the spiral guide plate 12 is filled with a desiccant. The cylinder 13 is provided with a first medium interface 4 for introducing a pre-dried medium, and a third medium interface 3 for discharging the dried medium. A sealing cap 2 is detachably connected to the top of the cylinder 13, and a discharge port 9 is provided at the bottom of the cylinder 13.

[0023] The barrel 13 is provided with a second medium interface 6 for introducing a purge medium, the second medium interface 6 is connected to the heating barrel 11, and the heating barrel 11 is connected to the barrel 13. The purge medium passes through the heating barrel 11 and contacts the desiccant before being discharged through the first medium interface 4.

[0024] The cylinder 13 is provided with a first sieve plate 1 and a second sieve plate 5, the first medium interface 4 passes through the second sieve plate 5, the third medium interface 3 passes through the first sieve plate 1, and the pre-dried medium is dried and discharged through the first medium interface 4, the second sieve plate 5, the first sieve plate 1 and the third medium interface 3 in sequence.

[0025] The surface of the first sieve plate 1 is provided with evenly arranged ventilation grooves, and the ventilation groove holes are 5 to 10 mm higher than the surface of the first sieve plate 1; the surface of the second sieve plate 5 is provided with evenly arranged ventilation grooves, and the ventilation groove holes are 5 to 10 mm higher than the surface of the second sieve plate 5.

[0026] The spiral guide plate 12 is connected to the outer wall of the heating cylinder 11. The spiral guide plate 12 includes multiple sub-guide plates, and the spacing between the sub-guide plates is the same. A first temperature measurement blind pipe 10 is provided on the side of the cylinder 13. A second temperature measurement blind pipe 14 is provided on the top of the cylinder 13.

[0027] A sewage outlet 8 is provided at the bottom of the cylinder 13 .

[0028] The electric heater 7 includes an electric heating core, a flat welding flange and a junction box. The core of the electric heating core is connected to fins, and the vertical distance between the outer edge of the fin and the inner wall of the heating tube is 1 to 2 mm.

[0029] The sealing cap 2 is fastened to the cylinder 13 by bolts, and a mica sealing gasket is provided between the two.

[0030] The discharge port 9 is connected to the cylinder 13 by welding, and the end cover of the discharge port 9 is fastened to the shell by bolts, with a mica sealing gasket provided between the two.

[0031] In this drying and dehydration device, the drying and regeneration conditions achieve efficient dehydration and desiccant regeneration through different media flow paths and treatment methods introduced through different interfaces. The following is a detailed and expanded description of the two operating conditions:

[0032] Drying condition: Under drying condition, the pre-drying medium enters the interior of the device from the first medium interface 4. After entering, the pre-drying medium first passes through the second sieve plate 5 arranged inside. The second sieve plate 5 plays the role of evenly distributing the airflow, so that the medium can flow evenly in all directions after entering the device, avoiding airflow deviation or excessive local flow rate. The uniformly treated medium is then guided to the spiral guide plate area. In this area, the pre-drying medium is in full contact with the desiccant arranged on the spiral guide plate 12. The gas medium passes through the desiccant in a spiral flow manner. This design increases the contact surface area, so that the gas can be effectively adsorbed and dehydrated by the desiccant. When the pre-drying medium is in full contact with the desiccant and the moisture is adsorbed by the desiccant, the dried gas is discharged from the third medium interface 3.

[0033] Regeneration Mode: In regeneration mode, the system injects a purge medium through the second medium port 6. The purge medium first enters the heating cartridge 11, where it is heated by the electric heater 7. When the high-temperature purge medium comes into contact with the desiccant, the moisture adsorbed by the desiccant is rapidly desorbed and discharged along with the purge medium. The desorbed gas is then discharged through the first medium port 4. During this process, the electric heater 7 transfers heat through the heating cartridge 11 and the spiral guide plate, further improving thermal energy utilization efficiency.

[0034] The device achieves efficient conversion between drying and regeneration through reasonable design of the medium flow path, and has the advantages of high energy efficiency and compact structure in actual operation.

[0035] The present invention provides a concept and method for a drying and dewatering device for a solid oxide electrolytic cell. There are numerous methods and approaches for implementing this technical solution. The foregoing description is merely 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. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A drying and dewatering device for a solid oxide electrolytic cell, characterized in that: The invention comprises a cylinder (13) with a heating cylinder (11) provided therein, a spiral guide plate (12) provided between the cylinder (13) and the heating cylinder (11), a desiccant provided on the spiral guide plate (12), a first medium interface (4) for introducing a pre-dried medium, and a third medium interface (3) for discharging a dried medium, a sealing cap (2) being detachably connected to the top of the cylinder (13), and a discharge port (9) being provided below the cylinder (13).

2. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: The barrel (13) is provided with a second medium interface (6) for introducing a purge medium, the second medium interface (6) is connected to the heating barrel (11), the heating barrel (11) is connected to the barrel (13), and the purge medium passes through the heating barrel (11) and contacts the desiccant before being discharged through the first medium interface (4).

3. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: The cylinder (13) is provided with a first sieve plate (1) and a second sieve plate (5); the first medium interface (4) passes through the second sieve plate (5); the third medium interface (3) passes through the first sieve plate (1); and the pre-dried medium is dried and discharged in sequence through the first medium interface (4), the second sieve plate (5), the first sieve plate (1), and the third medium interface (3).

4. The drying and water removal device for a solid oxide electrolytic cell according to claim 3, characterized in that: The surface of the first sieve plate (1) is provided with ventilation grooves arranged evenly, and the ventilation grooves are 5 to 10 mm higher than the surface of the first sieve plate (1); the surface of the second sieve plate (5) is provided with ventilation grooves arranged evenly, and the ventilation grooves are 5 to 10 mm higher than the surface of the second sieve plate (5).

5. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: The spiral guide plate (12) is connected to the outer wall of the heating cylinder (11).

6. The drying and water removal device for a solid oxide electrolytic cell according to claim 5, characterized in that: The spiral guide plate (12) comprises a plurality of sub-guide plates, and the intervals between the sub-guide plates are the same.

7. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: A first temperature measuring blind tube (10) is provided on the side of the cylinder (13).

8. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: A second temperature measuring blind tube (14) is provided on the top of the cylinder (13).

9. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: A sewage outlet (8) is provided at the bottom of the cylinder (13).

10. The drying and water removal device for a solid oxide electrolytic cell according to claim 1, characterized in that: described The electric heater (7) comprises an electric heating core, a flat welding flange and a junction box, wherein the core of the electric heating core is connected with fins. The vertical distance between the outer edge of the fin and the inner wall of the heating tube is 1 to 2 mm.

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