A water electrolysis hydrogen production apparatus
By designing a water electrolysis hydrogen production equipment, using palladium-platinum catalyst and molecular sieve adsorption tower to remove impurities, and combining steam pipeline temperature control, the problem of preparing high-purity hydrogen was solved, and the quality and performance of polymer materials were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LEVIMA ADVANCED MATERIALS CORP
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-19
AI Technical Summary
Existing technologies cannot provide high-purity hydrogen for adjusting the molecular weight of polymer materials, which affects the polymerization molecular weight, isotacticity, reaction rate, and catalyst activity.
Design a water electrolysis hydrogen production device, including an electrolyzer, a deoxygenation tank, a drying tower group and a reactor. Impurities are removed by a palladium-platinum catalyst and a molecular sieve adsorption tower, and heat is provided by a steam pipeline to ensure that the temperature of the electrolyzer, deoxygenation tank and drying tower group is within a specific range, so as to continuously produce high-purity hydrogen.
It enables the continuous production of high-purity hydrogen, improves the molecular weight regulation effect of polymer materials, enhances the isotacticity and reaction rate of materials, reduces ash content, and increases the added value of products.
Smart Images
Figure CN224378227U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical equipment technology, and in particular relates to a water electrolysis hydrogen production equipment. Background Technology
[0002] With the transformation of the global energy structure and changes in the Earth's environmental conditions, the demand for clean and renewable energy is increasing daily. Water electrolysis for hydrogen production, as an efficient and environmentally friendly method, has become a key component of hydrogen energy development and is receiving increasing attention and importance. Furthermore, due to the advantages of small volume and high purity in chemical engineering, water electrolysis can effectively reduce carbon dioxide emissions and decrease the environmental burden by replacing hydrogen produced from the catalytic decomposition of fossil fuels for the same mass.
[0003] Furthermore, in the current major polymer materials industry, hydrogen is used as a molecular weight regulator. During polymer chain synthesis, hydrogen can reduce the molecular weight of the polymer through chain transfer reactions without significantly affecting the molecular weight distribution. Additionally, hydrogen also influences the isotacticity of the polymer, reaction rate, and catalyst activity, thus playing a crucial role in the preparation of polymer materials.
[0004] In summary, hydrogen is an indispensable modifier in polymer synthesis. The purity of hydrogen directly affects the molecular weight of polymers; therefore, providing equipment for the preparation of high-purity hydrogen is a pressing issue. Utility Model Content
[0005] This invention provides a water electrolysis hydrogen production device that can continuously produce high-purity hydrogen gas, which can be used as a molecular weight regulator for polymer materials to improve the isotacticity, reaction rate and catalyst activity of polymer materials.
[0006] The technical solution of this utility model includes: a water electrolysis hydrogen production device, comprising: an electrolytic cell connected to an inlet pipe, a crude oxygen pipe, and a crude hydrogen pipe; demineralized water is added to the electrolytic cell through the inlet pipe; the crude oxygen pipe is connected to an oxygen separation tank; the crude hydrogen pipe is connected to a hydrogen separation tank; crude oxygen produced by the electrolysis reaction enters the oxygen separation tank through the crude oxygen pipe; and crude hydrogen produced by the electrolysis reaction enters the hydrogen separation tank through the crude hydrogen pipe; a deoxygenation tank connected to the outlet of the hydrogen separation tank through a pipe; and a palladium-platinum catalyst disposed inside the deoxygenation tank; and a drying tower assembly. The drying tower group includes three drying towers connected in sequence: Drying Tower 1, Drying Tower 2, and Drying Tower 3. Drying Tower 1 is connected to the outlet of the deoxygenation tank via a pipeline. A reactor is connected to the outlet of the drying tower group via a pipeline, and the reactor contains a polymer material. A steam pipeline is connected to the drying tower group, the deoxygenation tank, and the electrolytic cell. The high-temperature steam in the steam pipeline provides heat to the drying tower group, the deoxygenation tank, and the electrolytic cell. The temperature of the drying tower group is 220–260°C, the temperature of the deoxygenation tank is 100–160°C, and the temperature of the electrolytic cell is 85±5°C.
[0007] Preferably, the high-temperature steam in the steam pipeline passes successively through the drying tower group, the deoxygenation tank, and the electrolytic cell.
[0008] Preferably, the steam pipeline includes a first steam branch pipe, a second steam branch pipe, and a third steam branch pipe. The first steam branch pipe is connected to the drying tower assembly, the second steam branch pipe is connected to the deoxygenation tank, and the third steam branch pipe is connected to the electrolytic cell.
[0009] Preferably, the first steam branch pipe is provided with a first valve, the second steam branch pipe is provided with a second valve, and the third steam branch pipe is provided with a third valve.
[0010] Preferably, the deoxygenation tank is equipped with a first temperature sensor, and when the value of the first temperature sensor is lower than a first set value, the second valve opens.
[0011] Preferably, the electrolytic cell is equipped with a second temperature sensor. When the value of the second temperature sensor is lower than a second set value, the third valve is opened, and the second set value is less than the first set value.
[0012] Preferably, it further includes: a demineralized water tank, the outlet of which is connected to the oxygen separation tank and the hydrogen separation tank via a pipe, and the bottom of the oxygen separation tank and the hydrogen separation tank is connected to an alkaline filter via an alkaline solution pipe, the alkaline solution filter being connected to the inlet pipe.
[0013] Preferably, the alkali solution pipeline is equipped with an alkali solution circulation pump, and the demineralized water enters the inlet pipeline through the alkali solution filter under the action of the alkali solution circulation pump.
[0014] Preferably, the operating voltage of the electrolytic cell is 266V and the operating current of the electrolytic cell is 1460A.
[0015] The beneficial effects of this invention are as follows: the crude hydrogen gas produced by water electrolysis is passed through a deoxygenation tank and a drying tower group to remove impurities such as oxygen and water vapor. Furthermore, a steam pipeline is designed to provide heat to the electrolytic cell, deoxygenation tank, and drying tower group, maintaining the temperature of the drying tower group at 220-260℃, the temperature of the deoxygenation tank at 100-160℃, and the temperature of the electrolytic cell at 85±5℃. This allows for the continuous production of high-purity hydrogen gas, providing a molecular weight regulator for polymer synthesis, ensuring the polymerization molecular weight in polymer preparation, and simultaneously improving the quality of polymer materials, reducing ash content, and increasing the added value of polymer material products. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of an embodiment.
[0018] in:
[0019] 1. Electrolytic cell; 11. Liquid inlet pipe; 12. Crude oxygen pipe; 13. Crude hydrogen pipe; 2. Deoxygenation tank; 31. Drying tower one; 32. Drying tower two; 33. Drying tower three; 4. Reactor; 5. Steam pipe; 51. First steam branch pipe; 52. Second steam branch pipe; 53. Third steam branch pipe; 6. Oxygen separation tank; 7. Hydrogen separation tank; 8. Demineralized water tank; 9. Alkali filter. Detailed Implementation
[0020] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] In this document, terms such as "above," "below," "left," "right," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, these positional relationships may change; therefore, they should not be construed as absolute limitations on the scope of protection. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components. In addition, in embodiments of this utility model, "above," "below," etc., include the stated number.
[0022] The water electrolysis hydrogen production equipment in this embodiment can continuously produce high-purity hydrogen, which is mainly used as a molecular weight regulator for polymer materials to solve the problem of affecting the polymerization molecular weight in the preparation process of polymer materials. At the same time, it can improve the quality of polymer materials, improve the isotacticity of polymers, reaction rate and catalyst activity, reduce ash content and increase the added value of polymer material products.
[0023] Reference Figure 1 The water electrolysis hydrogen production equipment of this embodiment includes an electrolyzer 1, a deoxygenation tank 2, a drying tower group, a reactor 4, a steam pipeline 5, an oxygen separation tank 6, and a hydrogen separation tank 7.
[0024] The electrolytic cell 1 is connected to an inlet pipe 11, a crude oxygen pipe 12, and a crude hydrogen pipe 13. Demineralized water is added to the electrolytic cell 1 through the inlet pipe 11. The crude oxygen pipe 12 is connected to an oxygen separator 6, and the crude hydrogen pipe 13 is connected to a hydrogen separator 7. The crude oxygen produced by the electrolysis reaction enters the oxygen separator 6 through the crude oxygen pipe 12, and the crude hydrogen produced by the electrolysis reaction enters the hydrogen separator 7 through the crude hydrogen pipe 13. This process separates and discharges the moisture mixed in the crude oxygen and crude hydrogen, thus completing the preliminary purification of the crude hydrogen. Specifically, the oxygen that has undergone moisture removal and preliminary purification in the oxygen separator 6 is discharged through the outlet pipe of the oxygen separator 6. It can be directly vented or discharged to a designated container according to production needs. This is not the focus of this embodiment and will not be elaborated here.
[0025] The deoxygenation tank 2 is connected to the outlet of the hydrogen separator 7 via a pipeline. The deoxygenation tank 2 is equipped with a palladium-platinum catalyst, meaning that hydrogen gas discharged from the hydrogen separator 7 enters the deoxygenation tank 2 through the pipeline for further purification. In this embodiment, under the action of the palladium-platinum catalyst in the deoxygenation tank 2, impurities in the hydrogen gas can react with hydrogen to generate water vapor.
[0026] The drying tower assembly comprises three sequentially connected drying towers: drying tower 31 (first), drying tower 32 (second), and drying tower 33 (third). Drying tower 31 is connected to the outlet of deoxygenation tank 2 via a pipeline. That is, hydrogen gas, after impurity oxygen has been removed in deoxygenation tank 2, continues to flow through the pipeline into the three sequentially connected drying towers 31 (first), 32 (second), and 33 (third), where water vapor in the hydrogen gas is adsorbed. Specifically, in this embodiment, drying towers 31 (first), 32 (second), and 33 (third) are molecular sieve adsorption towers.
[0027] Steam pipe 5 connects to the drying tower group, deoxygenator 2, and electrolytic cell 11. The high-temperature steam in steam pipe 5 provides heat to these components. Specifically, the high-temperature steam in steam pipe 5 can be supplied uniformly from the plant's steam room, or a separate steam supply room can be designed for this water electrolysis hydrogen production equipment. Adjustments can be made according to actual production conditions, and no specific restrictions are imposed here. The high-temperature steam in steam pipe 5 maintains the temperature of the drying tower group at 220–260℃, the temperature of the deoxygenator 2 at 100–160℃, and the temperature of the electrolytic cell 1 at 85±5℃, thereby producing high-purity hydrogen under these temperature conditions.
[0028] Reactor 4 is connected to the outlet of the drying tower group through a pipeline. Polymer materials are installed in reactor 4, so that the high-purity hydrogen produced can be used as a molecular weight regulator in the synthesis of polymer materials, solving the problem of affecting the polymerization molecular weight in the preparation of polymer materials; at the same time, it improves the quality of polymer materials, reduces ash content, and increases the added value of polymer material products.
[0029] Specifically, the high-temperature steam in steam pipe 5 passes sequentially through the drying tower group, deoxidizer 2, and electrolytic cell 1. That is, the high-temperature steam in steam pipe 5 is first supplied to the drying tower group, and after heating the drying tower group, it continues to flow into the deoxidizer 2 to heat it. Similarly, after heating the deoxidizer 2, it finally flows into the electrolytic cell 1 to provide the heat required for the water electrolysis reaction. In this way, by having the high-temperature steam in steam pipe 5 pass through in order of required temperature, the required reaction temperature of each container can be guaranteed, and the heat of the steam can be effectively utilized, saving energy.
[0030] More specifically, refer to Figure 1 The steam pipeline 5 includes a first steam branch pipe 51, a second steam branch pipe 52, and a third steam branch pipe 53. The first steam branch pipe 51 is connected to the drying tower assembly, the second steam branch pipe 52 is connected to the deoxygenator 2, and the third steam branch pipe 53 is connected to the electrolytic cell 1. That is, in addition to the steam supplied from the preceding process, high-temperature steam can be directly supplied to the deoxygenator 2 and the electrolytic cell 1 through the second steam branch pipe 52 and the third steam branch pipe 53. This avoids excessively low temperatures in the deoxygenator 2 and the electrolytic cell 1 due to insufficient preceding steam temperature, thus ensuring the effectiveness of water electrolysis and deoxygenation.
[0031] Specifically, the first steam branch pipe 51 is equipped with a first valve (not shown in the figure), the second steam branch pipe 52 is equipped with a second valve (not shown in the figure), and the third steam branch pipe 53 is equipped with a third valve (not shown in the figure). By designing valves on the steam branch pipes, the amount of high-temperature steam supplied to the drying tower group, deoxygenator 2, and electrolytic cell 1 can be easily adjusted to improve their temperature maintenance effect, thereby enhancing the ability to continuously produce high-purity hydrogen.
[0032] A first temperature sensor (not shown in the figure) is installed in the deoxygenation tank 2. When the value of the first temperature sensor is lower than a first set value, the second valve opens. Similarly, a second temperature sensor (not shown in the figure) is installed in the electrolytic cell 1. When the value of the second temperature sensor is lower than a second set value, the third valve opens, and the second set value is less than the first set value. In this way, by using the first and second sensors to monitor the temperature of the deoxygenation tank 2 and the electrolytic cell 1 respectively, and opening the second and third valves respectively when the temperature is lower than the set value to supply high-temperature steam from the steam pipe 5, the heat waste of continuous high-temperature steam supply can be avoided, and the temperature can be controlled within the required range, which is beneficial to improving the ability to continuously produce high-purity hydrogen.
[0033] Reference Figure 1 The water electrolysis hydrogen production equipment in this embodiment also includes a demineralized water tank 8. The outlet of the demineralized water tank 8 is connected to an oxygen separation tank 6 and a hydrogen separation tank 7 via pipes. Furthermore, the bottoms of the oxygen separation tank 6 and the hydrogen separation tank 7 are connected to an alkaline filter 9 via alkaline pipes. The alkaline filter 9 is connected to an inlet pipe 11. That is, the demineralized water in the demineralized water tank 8 first enters the oxygen separation tank 6 and the hydrogen separation tank 7 through pipes to cool and wash the crude oxygen and crude hydrogen. Then, it enters the alkaline filter 9 from the bottom of the oxygen separation tank 6 and the hydrogen separation tank 7 through the alkaline pipes to filter out impurities. After that, it enters the electrolytic cell 1 through the inlet pipe 11 to carry out the water electrolysis reaction to produce hydrogen and oxygen.
[0034] Specifically, the alkali solution pipeline is equipped with an alkali solution circulation pump (not shown in the figure). Under the action of this alkali solution circulation pump, the demineralized water passes through the alkali solution filter 9 and enters the inlet pipeline 11. The driving force of the alkali solution circulation pump ensures that the demineralized water flows smoothly through the alkali solution filter 9.
[0035] In this embodiment, the operating voltage of electrolytic cell 1 is 266V and the operating current of electrolytic cell 1 is 1460A.
[0036] In one specific implementation of this embodiment, taking a 90 N m³ / h / 3.2 MPa (G) type water electrolysis hydrogen production device as an example, its working pressure is designed to be 3.2 MPa (G), the working temperature of electrolyzer 1 is designed to be 85 ± 5℃, the number of small chambers in electrolyzer 1 is 132, the working voltage of electrolyzer 1 is 266 V (DC), and the working current is 1460 A (DC); the temperature of deoxygenator 2 is set to be 100~160℃, the regeneration temperature of the drying tower group is set to be 220~260℃, and the purification regeneration flow rate is set to be 25~30 N m³ / h. When the production load is 93.6% and running stably, the purity of the product hydrogen is: product hydrogen O₂ content ≤ 1 ppm .vol, product hydrogen H₂O content ≤ 1 ppm The .vol (dew point -78℃) produces the highest purity hydrogen gas, and the continuously produced high-purity hydrogen gas can be used as a molecular weight regulator for polymer materials, which can improve the isotacticity of polymers, reaction rate and catalyst activity.
[0037] Where the embodiments do not contradict each other, at least some of the technical solutions in each embodiment can be recombine to form the essential technical solution of this utility model. Of course, the embodiments can also reference or include each other. Furthermore, it should be noted that adaptive adjustments and modifications made by those skilled in the art when recombinating the technical means described in the embodiments will also fall within the protection scope of this utility model.
[0038] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.
Claims
1. A water electrolysis hydrogen generation apparatus, characterized by, include: An electrolytic cell is provided, which is connected to an inlet pipe, a crude oxygen pipe, and a crude hydrogen pipe. Demineralized water is added to the electrolytic cell through the inlet pipe. The crude oxygen pipe is connected to an oxygen separation tank, and the crude hydrogen pipe is connected to a hydrogen separation tank. The crude oxygen produced by the electrolysis reaction enters the oxygen separation tank through the crude oxygen pipe, and the crude hydrogen produced by the electrolysis reaction enters the hydrogen separation tank through the crude hydrogen pipe. A deoxygenation tank is connected to the outlet of the hydrogen separation tank via a pipeline, and a palladium-platinum catalyst is provided inside the deoxygenation tank; The drying tower group includes three drying towers connected in sequence: drying tower one, drying tower two, and drying tower three. Drying tower one is connected to the outlet of the deoxygenation tank via a pipeline. A reactor, which is connected to the outlet of the drying tower assembly via a pipeline, and contains a polymer material; A steam pipeline is connected to the drying tower group, the deoxygenating tank and the electrolytic cell. The high-temperature steam in the steam pipeline provides heat to the drying tower group, the deoxygenating tank and the electrolytic cell. The temperature of the drying tower group is 220-260℃, the temperature of the deoxygenating tank is 100-160℃ and the temperature of the electrolytic cell is 85±5℃.
2. The water electrolysis hydrogen generation apparatus according to claim 1, characterized by: The high-temperature steam in the steam pipeline passes successively through the drying tower group, the deoxygenation tank and the electrolytic cell.
3. The water electrolysis hydrogen generation apparatus according to claim 2, characterized by: The steam pipeline includes a first steam branch pipe, a second steam branch pipe, and a third steam branch pipe. The first steam branch pipe is connected to the drying tower group, the second steam branch pipe is connected to the deoxygenation tank, and the third steam branch pipe is connected to the electrolytic cell.
4. The water electrolysis hydrogen generation apparatus according to claim 3, characterized by: The first steam branch pipe is equipped with a first valve, the second steam branch pipe is equipped with a second valve, and the third steam branch pipe is equipped with a third valve.
5. The water electrolysis hydrogen production equipment according to claim 4, characterized in that: The deoxygenation tank is equipped with a first temperature sensor. When the value of the first temperature sensor is lower than a first set value, the second valve opens.
6. The water electrolysis hydrogen generation apparatus according to claim 5, characterized by: The electrolytic cell is equipped with a second temperature sensor. When the value of the second temperature sensor is lower than a second set value, the third valve opens. The second set value is less than the first set value.
7. The water electrolysis hydrogen generation apparatus according to claim 1, characterized by Also includes: The demineralized water tank has its outlet connected to the oxygen separation tank and the hydrogen separation tank via a pipe. The bottom of the oxygen separation tank and the hydrogen separation tank is connected to an alkaline filter via an alkaline solution pipe, and the alkaline solution filter is connected to the inlet pipe.
8. The water electrolysis hydrogen generation apparatus according to claim 5, characterized by: The alkali pipeline is equipped with an alkali circulation pump, and the demineralized water enters the inlet pipeline through the alkali filter under the action of the alkali circulation pump.
9. The water electrolysis hydrogen generation apparatus according to claim 1, characterized by: The electrolytic cell operates at a voltage of 266V and a current of 1460A.