Pre-purification preheating device for hydrogen purification external heating process

Abstract

The utility model relates to the technical field of hydrogen purification external heating, in particular to a pre-purification preheating device for a hydrogen purification external heating process. Comprising a gas-water separator, a first gas pipeline is arranged on one side of the gas-water separator, a second gas pipeline is arranged at the top end of the gas-water separator, a pre-heat-exchanger structure is arranged on the side of the gas-water separator, and a sixth gas pipeline is arranged on one side of the pre-heat-exchanger structure. The end, away from the gas-water separator, of the second gas pipeline is connected with the top end of the pre-heat-exchanger structure, the deaerator is arranged on the side of the pre-heat-exchanger structure, and the end, away from the pre-heat-exchanger structure, of the fifth gas pipeline is connected with the bottom end of the deaerator. The device has the advantages that the device has high expansion research performance and a wide practical application scene, and in the practical application scene, the related similar process can be used for heat exchange of gas and can also be expanded to be applied to other scenes such as alkali liquor preheating and factory domestic heat consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of external heating for hydrogen purification, in particular to a pre-purification preheating device used in a hydrogen purification external heating process. Background Art

[0002] With the rapid development of the water electrolysis hydrogen production industry, the technical level of the water electrolysis hydrogen production industry is also rapidly improving, and the industry's requirements for water electrolysis hydrogen production are getting higher and higher.

[0003] Energy consumption control in the process of hydrogen production by electrolysis of water has always been one of the focuses of technological improvement, and it is also in response to the national carbon emission reduction policy. The device is used to reduce energy consumption in the process of hydrogen production and hydrogen purification. Increase the utilization rate of energy. In the hydrogen production process, after the hydrogen gas and liquid are separated, the temperature is around room temperature. After entering the hydrogen purification part, the room temperature hydrogen is heated by the hydrogen deoxygenation tower, cooled and then enters the hydrogen drying tower, where the heat of this part of the hydrogen will be wasted. The utility model is mainly a gas-to-gas preheat exchanger device, which utilizes this part of the heat. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology and propose a pre-purification preheating device for the external heating process of hydrogen purification. The technical solution adopted by this utility model is:

[0005] A device for preheating before purification of a hydrogen purification external heating process comprises a gas-water separator, a gas pipeline 1 is provided on one side of the gas-water separator, a gas pipeline 2 is provided at the top of the gas-water separator, a preheat exchanger structure is provided on the side of the gas-water separator, a gas pipeline 6 is provided on one side of the preheat exchanger structure, an end of the gas pipeline 2 away from the gas-water separator is connected to the top of the preheat exchanger structure, a gas pipeline 5 is provided on one side of the preheat exchanger structure, a deoxidizer is provided on the side of the preheat exchanger structure, an end of the gas pipeline 5 away from the preheat exchanger structure is connected to the bottom of the deoxidizer, a gas pipeline 4 is provided at the top of the deoxidizer, a deoxidation external heater is provided on the side of the deoxidizer, an end of the gas pipeline 4 away from the deoxidizer is connected to one side of the deoxidation external heater, a gas pipeline 3 is provided at the bottom of the preheat exchanger structure, and an end of the gas pipeline 3 away from the preheat exchanger structure is connected to the bottom of the deoxidation external heater.

[0006] As an improvement, the pre-heat exchanger structure includes a tube side and a shell side, and the two shell sides are respectively arranged at the upper and lower ends of the tube side. The shell side arranged at the top of the tube side is connected to one end of the gas pipeline 2, the shell side arranged at the bottom of the tube side is connected to one end of the gas pipeline 3, and one side of the tube side is connected to one end of the gas pipeline 5.

[0007] The beneficial effects of the utility model are:

[0008] The utility model discloses a device for preheating before purification in an external heating process for hydrogen purification. The utility model device has high expandability and research potential and a wide range of practical application scenarios. In practical application scenarios, its related similar processes can be used for heat exchange of gas, and can also be expanded to other scenarios such as alkali solution preheating, factory living heating, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] Reference table of accompanying symbols:

[0011] 1. Gas-water separator; 2. Preheat exchanger structure; 3. Deaerator external heater; 4. Deaerator; 5. Gas pipeline 1; 6. Gas pipeline 2; 7. Gas pipeline 3; 8. Gas pipeline 4; 9. Gas pipeline 5; 10. Gas pipeline 6; 11. Tube side; 12. Shell side. DETAILED DESCRIPTION

[0012] The following will be combined with the 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0013] In order to solve the technical problems in the background technology, the following is a pre-purification preheating device for a hydrogen purification external heating process:

[0014] Combine Figure 1As shown, the utility model provides a pre-purification preheating device for a hydrogen purification external heating process, comprising a gas-water separator 1, a gas pipeline 1 5 is provided on one side of the gas-water separator 1, a gas pipeline 2 6 is provided on the top of the gas-water separator 1, a pre-heat exchanger structure 2 is provided on the side of the gas-water separator 1, a gas pipeline 6 10 is provided on one side of the pre-heat exchanger structure 2, the gas pipeline 2 6 is connected to the top of the pre-heat exchanger structure 2 at one end away from the gas-water separator 1, a gas pipeline 5 9 is provided on one side of the pre-heat exchanger structure 2, a deoxidizer 4 is provided on the side of the pre-heat exchanger structure 2, the gas pipeline 5 9 is connected to the bottom of the deoxidizer 4 at one end away from the pre-heat exchanger structure 2, a gas pipeline 4 8 is provided on the top of the deoxidizer 4, and a deoxidizer external heater is provided on the side of the deoxidizer 4. 3. The end of gas pipeline 4 8 away from the deaerator 4 is connected to one side of the external deaerator heater 3. A gas pipeline 3 7 is provided at the bottom end of the preheat exchanger structure 2. The end of gas pipeline 3 7 away from the preheat exchanger structure 2 is connected to the bottom end of the external deaerator heater 3. The preheat exchanger structure 2 includes a tube side 11 and a shell side 12. The two shell sides 12 are respectively arranged at the upper and lower ends of tube side 11. The shell side 12 at the top of tube side 11 is connected to one end of gas pipeline 2 6, and the shell side 12 at the bottom of tube side 11 is connected to one end of gas pipeline 3 7. One side of tube side 11 is connected to one end of gas pipeline 5 9. The preheat exchanger structure 2 consists of tube side 11 and shell side 12. The medium in tube side 11 is the gas to be exchanged, and tube side 11 utilizes shell-and-tube heat exchange tubes. The medium in shell side 12 is high-temperature heat exchange gas, and the shell side 12 is responsible for the high-temperature gas flow path of the device.

[0015] The working principle and use process of this utility model:

[0016] In use: This device is installed in the hydrogen purification and drying section, before the deoxidizer and external deoxidizer heater. After passing through the front-end gas-liquid separation device, the gas enters the gas-water separator via gas pipeline 1 (5), and then enters the tube side of the preheat exchanger structure 2 via gas pipeline 2 (6). At this point, the high-temperature gas, previously heated by the external deoxidizer heater 3 and deoxidizer 4, enters the shell side of the preheat exchanger structure 2 via gas pipeline 5 (9) to preheat the gas to be exchanged. After being preheated to 45-50°C, the gas enters the external deoxidizer heater 3 via gas pipeline 3 (7). The hydrogen is heated to 80-90°C by the external deoxidizer heater 3. It then enters the deoxidizer via gas pipeline 4 (8) for deoxidation. The deoxidized hydrogen enters the preheat exchanger via gas pipeline 5 (9), preheating the incoming gas to be exchanged. After preheating, the high-temperature hydrogen enters the subsequent process via gas pipeline 6 (10). The waste heat of the inlet room-temperature hydrogen is recovered and utilized, thereby reducing the power of subsequent heaters, lowering the energy consumption of the entire equipment, reducing energy waste, and further reducing energy consumption in the process of hydrogen production by electrolysis of water.

[0017] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preheating before purification in an external heating process for hydrogen purification, characterized in that: The invention comprises a gas-water separator (1), wherein a gas pipeline 1 (5) is provided on one side of the gas-water separator (1), a gas pipeline 2 (6) is provided on the top of the gas-water separator (1), a preheat exchanger structure (2) is provided on the side of the gas-water separator (1), a gas pipeline 6 (10) is provided on one side of the preheat exchanger structure (2), the gas pipeline 2 (6) is connected to the top of the preheat exchanger structure (2) at one end away from the gas-water separator (1), a gas pipeline 5 (9) is provided on one side of the preheat exchanger structure (2), and a degassing device is provided on the side of the preheat exchanger structure (2). The deoxidizer (4) is provided with a gas pipeline (5) (9) at one end away from the preheat exchanger structure (2) and connected to the bottom end of the deoxidizer (4); a gas pipeline (4) (8) is provided at the top end of the deoxidizer (4); a deoxidation external heater (3) is provided on the side of the deoxidizer (4); a gas pipeline (4) (8) is provided at one end away from the deoxidizer (4) and connected to one side of the deoxidation external heater (3); a gas pipeline (3) (7) is provided at the bottom end of the preheat exchanger structure (2); a gas pipeline (3) (7) is provided at one end away from the preheat exchanger structure (2) and connected to the bottom end of the deoxidation external heater (3).

2. The device for preheating before purification in a hydrogen purification external heating process according to claim 1, characterized in that: The preheat exchanger structure (2) includes a tube side (11) and a shell side (12), and the two shell sides (12) are respectively arranged at the upper and lower ends of the tube side (11). The shell side (12) arranged at the top end of the tube side (11) is connected to one end of the gas pipeline 2 (6), and the shell side (12) arranged at the bottom end of the tube side (11) is connected to one end of the gas pipeline 3 (7). One side of the tube side (11) is connected to one end of the gas pipeline 5 (9).

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