Electrolytic bath gas detection device and electrolysis system
By designing an electrolytic cell gas detection device, the pipeline and communication mechanism are used to remove alkali liquid in the electrolytic cell gas, and the gas purity is monitored in real time, which solves the problem of difficult monitoring of the electrolytic cell performance and improves the operation safety of the electrolytic cell.
Patent Information
- Application Number
- CN202421173417.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the electrolysis of alkali liquid, it is difficult for the prior art to monitor the performance of the electrolytic cell in real time, resulting in serious diaphragm damage and hydrogen and oxygen throughput, which increases the safety hazards of electrolytic cell explosion.
An electrolytic cell gas detection device is designed, which conducts the electrolytic cell with the gas-liquid separator through the first and second pipelines, and connects the gas in the two pipelines through the communication mechanism, and removes the gas from the gas by gravity. The residual alkali liquid is then introduced into the gas analyzer to monitor the purity of the gas in real time.
Real-time monitoring of the performance of the electrolytic cell is achieved, which reduces safety hazards and improves the operational safety of alkaline electrolysis.
Smart Images
Figure CN222524698U_ABST
Abstract
Description
Technical Field
[0001] The utility model mainly relates to the technical field of water electrolysis gas detection, in particular to an electrolytic cell gas detection device. Background Art
[0002] Alkaline electrolysis is a method of producing hydrogen by providing energy to the alkali solution through electricity, breaking the hydrogen-oxygen bonds of water molecules. Currently, in the industrial application of alkali-based hydrogen production, all gases produced by the electrolyzer are typically mixed and separated into gas and liquid before undergoing gas purity analysis to detect the purity of the resulting hydrogen. However, this method typically places the gas analyzer at the outlet of the gas-liquid separator, resulting in a lack of timely attention to the performance of the electrolyzer. Once the diaphragm in the electrolyzer is damaged and the hydrogen-oxygen cross-linking phenomenon is severe, it can easily cause safety hazards such as electrolyzer explosion. Utility Model Content
[0003] The purpose of the utility model is to provide an electrolytic cell gas detection device and an electrolysis system for real-time monitoring of the performance of the electrolytic cell, reducing potential safety hazards in the electrolytic cell, and thus improving the operational safety of alkaline solution electrolysis.
[0004] To achieve the above-mentioned objectives, in a first aspect, the utility model provides an electrolytic cell gas detection device, comprising an electrolytic cell, a gas analyzer and a gas-liquid separator; the electrolytic cell is connected to the gas-liquid separator through a first pipeline and a second pipeline, wherein a connecting mechanism is provided between the first pipeline and the second pipeline, and the connecting mechanism is configured to connect the gas discharged from the electrolytic cell; one of the first pipeline and the second pipeline is provided with an exhaust port, and the exhaust port is configured to introduce gas into the gas analyzer to detect the purity of the gas.
[0005] In some embodiments, the communication mechanism is a three-phase communication pipe.
[0006] In some embodiments, the gas-liquid separator is installed at a height higher than the electrolytic cell.
[0007] In some embodiments, the exhaust port is provided at a higher height of the first pipeline and the second pipeline.
[0008] In some embodiments, the gas analyzer includes an oxygen-in-hydrogen analyzer, which is used to detect the oxygen content in the gas.
[0009] In some embodiments, it is characterized in that the first pipeline and the second pipeline are both provided with an outlet, and the outlet is configured to introduce the gas discharged from the electrolytic cell into the gas-liquid separator.
[0010] In some embodiments, one of the outlets is disposed at a height higher than the liquid level in the gas-liquid separator.
[0011] In some embodiments, a gas-liquid scrubber is further included, and the gas-liquid scrubber is arranged between the exhaust port and the gas analyzer.
[0012] In some embodiments, the gas-liquid scrubber is installed at a higher height than the gas-liquid separator.
[0013] In some embodiments, the gas-liquid scrubber is filled with ball rings, which are used to remove alkali liquid from the gas.
[0014] In a second aspect, the present application provides an electrolysis system, comprising an electrolytic cell gas detection device as described in any one of the first aspects above.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] The utility model provides an electrolytic cell gas detection device and an electrolysis system, which connect the electrolytic cell and a gas-liquid separator through a first pipeline and a second pipeline, and connect the gas discharged from the electrolytic cell in the first pipeline and the second pipeline through a connecting mechanism, so as to achieve the purpose of removing residual alkali liquid in the gas under the action of gravity, and further introduce the gas into a gas analyzer through an exhaust port, so that the performance of the electrolytic cell can be monitored in real time according to the gas purity detected by the gas analyzer, thereby reducing safety hazards in the electrolytic cell and improving the operational safety of alkali liquid electrolysis. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present application. In the accompanying drawings:
[0018] Figure 1 This is a structural diagram of an electrolytic cell gas detection device provided by one embodiment of the present utility model;
[0019] Figure 2 This is a partial schematic diagram of an electrolytic cell gas detection device provided by an embodiment of the present invention.
[0020] Figure 3 This is a structural diagram of another electrolytic cell gas detection device provided by one embodiment of the present utility model;
[0021] Figure 4 Schematic diagram of the structure of the electrolysis system provided in one embodiment of the present application.
[0022] Reference numerals:
[0023] Electrolyzer-1; Gas analyzer-2; Gas-liquid separator-3; First pipeline-4; Second pipeline-5; Connecting mechanism-6; Exhaust port-7; First outlet-8; Second outlet-9; Gas-liquid scrubber-10;
[0024] Electrolyzer gas detection devices-100, 200; electrolysis system-300. DETAILED DESCRIPTION
[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.
[0026] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.
[0027] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.
[0030] The embodiment of the present utility model describes a gas detection device for an electrolytic cell.
[0031] Figure 1 It is a structural schematic diagram of an electrolytic cell gas detection device provided in one embodiment of the present application.
[0032] See also Figure 1 The electrolytic cell gas detection device 100 includes an electrolytic cell 1, a gas analyzer 2, and a gas-liquid separator 3. The electrolytic cell 1 is connected to the gas-liquid separator 3 via a first pipeline 4 and a second pipeline 5. A communication mechanism 6 is provided between the first pipeline 4 and the second pipeline 5. The communication mechanism 6 is configured to connect the gas discharged from the electrolytic cell 1. One of the first pipeline 4 and the second pipeline 5 is provided with an exhaust port 7. The exhaust port 7 is configured to guide the gas into the gas analyzer 2 for gas purity detection.
[0033] When the alkaline solution in the electrolytic cell 1 generates gas due to electrolysis, the gas is introduced into the gas-liquid separator 3 via the first pipeline 4 and the second pipeline 5. Due to the provision of the connecting mechanism 6, the gases in the first pipeline 4 and the second pipeline 5 are interconnected. Therefore, when the gas is subjected to the action of gravity, the alkaline solution remaining in the gas can sink to the lower height of the first pipeline 4 or the second pipeline 5, thereby achieving the purpose of removing the residual alkaline solution in the gas.
[0034] In some embodiments, the connecting mechanism 6 is a three-phase connecting pipe. The gas-liquid separator 3 is installed at a higher height than the electrolytic cell 1. The exhaust port 7 is located in the higher elevation of the first or second pipeline 4, 5. The gas analyzer is a hydrogen-oxygen analyzer to detect the oxygen content in the gas.
[0035] exist Figure 1 In the figure, it is exemplified that the setting height of the first pipeline 4 is higher than the setting height of the second pipeline 5. The exhaust port 7 is provided in the portion of the first pipeline 4 between the connecting mechanism 6 and the gas-liquid separator 3. Based on the above structure, when the alkaline solution in the electrolytic cell 1 generates gas due to electrolysis, the gas will be introduced into the gas-liquid separator 3 via the first pipeline 4 and the second pipeline 5 respectively. The gases in the first pipeline 4 and the second pipeline 5 are interconnected. Under the action of gravity, the residual alkaline solution in the gas in the first pipeline 4 can sink into the second pipeline 5 and can be introduced into the gas analyzer 2 via the exhaust port 7. The gas analyzer 2 can detect the oxygen content of the gas generated by electrolysis, so as to timely detect whether the oxygen content of the gas generated by the electrolytic cell exceeds the standard. When the oxygen content exceeds the standard, a timely warning will be issued, thereby reducing the safety hazards in the electrolytic cell that may be caused by untimely warnings, thereby ensuring the safe operation of alkaline solution electrolysis.
[0036] In some embodiments, both the first pipeline 4 and the second pipeline 5 have outlets configured to guide the gas discharged from the electrolytic cell 1 into the gas-liquid separator 3. One of the outlets is provided at a height higher than the liquid level in the gas-liquid separator 3.
[0037] Figure 2 FIG. 1 is a partial schematic diagram of an electrolytic cell gas detection device 100 provided in one embodiment of the present application.
[0038] exist Figure 2In the figure, an outlet 8 (or referred to as the first outlet 8) provided in the first pipeline 4 and an outlet 9 (or referred to as the second outlet 9) provided in the second pipeline 5 are exemplarily shown. The first outlet 8 and the second outlet 9 are configured to introduce the gas discharged from the electrolytic cell 1 into the gas-liquid separator 3. Since the setting height of the first pipeline 4 is higher than the setting height of the second pipeline 5, the setting height of the gas discharged through the first outlet 8 will also be higher than the setting height of the gas discharged through the second outlet 9. The setting height of the first outlet 8 can be higher than the height of the liquid level in the gas-liquid separator 3, thereby avoiding the gas in the first pipeline 4 from being affected by the alkali liquid in the gas-liquid separator 3 when being discharged through the exhaust port 7, ensuring normal monitoring of gas purity. The setting height of the second outlet 9 can be lower than the height of the liquid level in the gas-liquid separator 3, so that the deposited residual alkali liquid can be introduced into the gas-liquid separator 3 to achieve gas-liquid separation.
[0039] Figure 3 It is a structural schematic diagram of an electrolytic cell gas detection device provided in another embodiment of the present application.
[0040] See Figure 3 As shown, the electrolytic cell gas detection device 200 further includes a gas-liquid scrubber 10 , which is disposed between the exhaust port 7 and the gas analyzer 2 .
[0041] In some embodiments, the setting height of the gas-liquid scrubber 10 is higher than the setting height of the gas-liquid separator 3, so that the residual alkaline liquid in the gas in the first pipeline 4 can sink into the second pipeline 5 and can be introduced into the gas-liquid scrubber 10 through the exhaust port 7.
[0042] In some embodiments, the gas-liquid scrubber 10 is filled with ball rings to further remove residual alkali solution from the gas before it is introduced into the gas analyzer 2. In this way, the gas undoped with alkali solution is introduced into the gas analyzer 2 for detection, thereby more accurately analyzing the oxygen content of the gas before gas-liquid separation. By detecting whether the oxygen content exceeds the standard, the performance of the electrolytic cell can be monitored in real time, thereby reducing safety hazards such as electrolytic cell explosion and ensuring the safe operation of alkali solution electrolysis.
[0043] Figure 4 Schematic diagram of the structure of the electrolysis system provided in one embodiment of the present application.
[0044] See also Figure 4 The electrolysis system 300 includes the electrolytic cell gas detection device provided by any of the above embodiments of the present application, illustratively including the electrolytic cell gas detection device 100 or 200. When the electrolysis system 300 is in operation, the gas purity detected by the electrolytic cell gas detection device 100 or 200 is used to monitor the performance of the electrolytic cell in real time, thereby reducing safety hazards during electrolysis and improving the operational safety of alkaline solution electrolysis.
[0045] The basic concepts have been described above. It will be apparent to those skilled in the art that the above utility model disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.
[0046] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.
[0047] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values are as accurate as possible within the feasible range.
[0048] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.
Claims
1. A gas detection device for an electrolytic cell, characterized in that: It includes an electrolyzer, a gas analyzer and a gas-liquid separator; The electrolytic cell is connected to the gas-liquid separator through a first pipeline and a second pipeline, wherein a communication mechanism is provided between the first pipeline and the second pipeline, and the communication mechanism is configured to communicate with the gas discharged from the electrolytic cell; One of the first pipeline and the second pipeline is provided with an exhaust port, and the exhaust port is configured to introduce gas into the gas analyzer to detect the purity of the gas.
2. The electrolytic cell gas detection device according to claim 1, characterized in that: The connecting mechanism is a three-phase connecting pipe.
3. The electrolytic cell gas detection device according to claim 1, characterized in that: The gas-liquid separator is arranged at a height higher than that of the electrolytic cell.
4. The electrolytic cell gas detection device according to claim 1, characterized in that: The exhaust port is disposed at a higher height of the first pipeline and the second pipeline.
5. The electrolytic cell gas detection device according to claim 4, characterized in that: The gas analyzer comprises an oxygen-in-hydrogen analyzer, and the oxygen-in-hydrogen analyzer is used to detect the oxygen content in the gas.
6. The electrolytic cell gas detection device according to claim 1, characterized in that: The first pipeline and the second pipeline are both provided with an outlet, and the outlet is configured to introduce the gas discharged from the electrolytic cell into the gas-liquid separator.
7. The electrolytic cell gas detection device according to claim 6, characterized in that: One of the outlets is arranged at a height higher than the liquid level in the gas-liquid separator.
8. The electrolytic cell gas detection device according to claim 1, characterized in that: It also includes a gas-liquid scrubber, which is arranged between the exhaust port and the gas analyzer.
9. The electrolytic cell gas detection device according to claim 8, characterized in that: The installation height of the gas-liquid scrubber is higher than the installation height of the gas-liquid separator.
10. The electrolytic cell gas detection device according to claim 9, characterized in that: The gas-liquid scrubber is filled with ball rings, and the ball rings are used to remove alkali liquid in the gas.
11. An electrolysis system, characterized in that: It comprises the electrolytic cell gas detection device as described in any one of claims 1-10.