Novel gas-liquid split-flow circulating device and method in array-modular electrolytic cell

Abstract

The invention discloses a novel gas-liquid split-flow circulating device in an array-modular electrolytic cell, and belongs to the technical field of water electrolysis. The array-modular electrolytic cell is connected with a gas-liquid separator; the gas treatment module is connected with a gas outlet of the gas-liquid separator; the alkali liquor box is connected with a liquid outlet of the gas-liquid separator; the alkali liquor circulating pump is connected with an outlet of the alkali liquor box, and the alkali liquor box is connected with a liquid inlet of the array-module electrolytic cell. The gas-liquid split-flow circulation process has remarkable advantages in the water electrolysis system. The electrolytic efficiency can be improved, gases after reaction are discharged respectively, and insufficient electrode reaction is avoided. And the alkali liquor circulation efficiency can be improved, and air resistance and energy consumption are reduced. In safety, the cathode liquid and the anode liquid are independently circulated, so that the explosion risk caused by mixing of hydrogen and oxygen is avoided. According to the scheme, the concentration of the alkali liquor can be effectively controlled, stable operation of the system is ensured, and a foundation is built for efficient and safe operation of the electrolyzed water system.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolyzed water, and particularly to a gas-liquid shunt circulation device and method in a new type of array-modular electrolytic cell. Background Art

[0002] As a sustainable hydrogen production method, electrolyzed water to produce hydrogen has received extensive attention in recent years. Traditional electrolytic cells have some deficiencies in gas-liquid separation and alkali liquor circulation. For example, after the hydrogen and oxygen generated by traditional electrolytic cells are mixed with the electrolyte solution, the gas-liquid separation efficiency is relatively low, resulting in more electrolyte droplets carried in the gas, which affects the gas purity. At the same time, during the circulation process of the gas-liquid mixture, due to the presence of gas, gas blockage phenomena are likely to occur in the pipeline, reducing the circulation efficiency and increasing the energy consumption. At the same time, some existing gas-liquid separation devices have complex structures and large volumes, and it is difficult to integrate them into modular electrolytic cells. Moreover, these devices often cannot well adapt to the electrolyzed water reaction under different working conditions, which poses a great obstacle to improving the overall performance and stability of the electrolyzed water system. In addition, in terms of the circulation process, the existing circulation methods have low circulation efficiency and increase the energy consumption of the system.

[0003] Therefore, it is an urgent technical problem for those skilled in the art to provide a gas-liquid shunt circulation device and method in a new type of array-modular electrolytic cell with high electrolysis efficiency and efficient recycling of alkali liquor. Summary of the Invention

[0004] The present invention aims to provide a gas-liquid shunt circulation process for a new type of array-module electrolytic cell to improve the gas-liquid separation efficiency of electrolyzed water products, reduce the electrolyte carrying amount in the gas, and improve the gas purity; at the same time, optimize the circulation process, reduce gas blockage phenomena, improve the circulation efficiency, reduce the energy consumption, improve the electrolysis efficiency, and achieve efficient recycling of alkali liquor.

[0005] To this end, an object of the present invention is to propose a gas-liquid shunt circulation device in a new type of array-modular electrolytic cell, including an array-module electrolytic cell, a gas-liquid separator, a gas treatment module, an alkali liquor tank, and an alkali liquor circulation pump;

[0006] Wherein, the array-module electrolytic cell is connected to the gas-liquid separator; the gas treatment module is connected to the gas outlet of the gas-liquid separator; the alkali liquor tank is connected to the liquid outlet of the gas-liquid separator; the alkali liquor circulation pump is connected to the outlet of the alkali liquor tank and is connected to the liquid inlet of the array-module electrolytic cell;

[0007] The array-module electrolytic cell includes a frame and a plurality of electrolytic chambers, and the plurality of electrolytic chambers are regularly arranged and fixed within the frame;

[0008] At least several of the electrolysis chambers are arranged in at least two rows regularly. Any two of the electrolysis chambers in the same row are connected in series, and any two of the electrolysis chambers in different rows are connected in parallel.

[0009] Furthermore, a make-up water pump is provided in the alkali solution tank.

[0010] Each part of the present invention is connected through a standardized interface, which is convenient for disassembly and assembly, and all connections are through pipelines.

[0011] Furthermore, in the above solution of the present invention, the electrolysis chamber provides a suitable environment for the electrolysis reaction. The current passes through the electrolyte solution, enabling cations and anions to undergo reduction and oxidation reactions on the cathode and anode respectively, thereby generating H 2 and O 2 . The modular electrolytic cell frame plays a role in supporting and fixing the electrolytic cell during the electrolysis process. It provides a stable structure for the electrolytic cell, enabling the electrolytic cell to remain stable and firm during the electrolysis process. In addition, the modular electrolytic cell frame can also facilitate the assembly and disassembly of the electrolytic cell, thereby improving the maintenance and replacement efficiency of the electrolytic cell.

[0012] Even further, in the present invention, each electrolysis chamber is provided with two liquid inlets, namely the cathode liquid inlet and the anode liquid inlet. Its function is to guide the electrolyte solution in the main pipeline into each electrolysis unit, providing the necessary material basis and reaction medium for the smooth start and continuous and stable progress of the electrolysis reaction. Ensuring sufficient reaction of the raw materials required for the electrolysis reaction. Each electrolysis chamber also corresponds to two liquid outlets (the cathode liquid outlet and the anode liquid outlet). The liquid outlets are connected to the liquid outlet pipeline, responsible for transporting the liquid in the electrolytic cell to the liquid outlet pipeline, thereby realizing the discharge and circulation of the liquid.

[0013] Furthermore, a plurality of gas-liquid separators are provided. Each of the electrolysis chambers is provided with an anode liquid outlet and a cathode liquid outlet, and each of the electrolysis chambers is provided with an anode liquid inlet and a cathode liquid inlet;

[0014] Each electrolysis chamber is provided with a gas-liquid separator at each of its anode liquid outlet and cathode liquid outlet;

[0015] The gas-liquid separator at the anode liquid outlet is provided with an anode gas outlet and an anode liquid outlet; the gas-liquid separator at the cathode liquid outlet is provided with a cathode gas outlet and a cathode liquid outlet;

[0016] A plurality of the anode gas outlets are connected in parallel to form a main pipeline for the anode gas outlet; a plurality of the cathode gas outlets are connected in parallel to form a main pipeline for the cathode gas outlet.

[0017] Furthermore, the alkali solution tank includes an anode alkali solution tank and a cathode alkali solution tank; the alkali solution circulation pump includes an anode alkali solution circulation pump and a cathode alkali solution circulation pump;

[0018] The anodic lye tank is connected to the anodic lye circulation pump, and the cathodic lye tank is connected to the cathodic lye circulation pump.

[0019] The anodic lye circulation pump is connected to the anodic liquid inlets of a plurality of the electrolysis compartments through an anodic liquid inlet main pipeline; the cathodic lye circulation pump is connected to the cathodic liquid inlets of a plurality of the electrolysis compartments through a cathodic liquid inlet main pipeline.

[0020] Furthermore, the a plurality of anodic liquid outlets are connected in parallel to form an anodic liquid outlet main pipeline, and the anodic liquid outlet main pipeline is connected to the anodic lye tank;

[0021] The a plurality of cathodic liquid outlets are connected in parallel to form a cathodic liquid outlet main pipeline, and the cathodic liquid outlet main pipeline is connected to the cathodic lye tank.

[0022] Further, the gas treatment module includes an anodic gas treatment module and a cathodic gas treatment module; the anodic gas treatment module is connected to the anodic gas outlet main pipeline, and the cathodic gas treatment module is connected to the cathodic gas outlet main pipeline.

[0023] The present invention also provides a gas-liquid shunt circulation method for a novel array-modular electrolytic cell, which uses the above device and includes the following steps:

[0024] (1) In the array-module electrolytic cell, water electrolysis generates hydrogen, oxygen and lye. The gas-liquid mixture outlet enters a gas-liquid separation device, and the gas-liquid separation device quickly separates the gas and the liquid by gravity. The liquid gradually accumulates in the liquid main pipeline under the action of gravity and then flows back to the lye tank, while the gas rises to the gas main pipeline;

[0025] (2) The gas coming out of the gas main pipeline enters a gas treatment device, and the gas is adsorbed by a desiccant in the gas treatment module to remove the contained moisture and impurities, obtaining high-purity hydrogen and oxygen;

[0026] (3) The lye coming out of the liquid main pipeline passes through the lye tank and is then re-transported back to the array-module electrolytic cell through a lye circulation pump to continue participating in the electrolysis reaction, realizing the recycling of the liquid.

[0027] Further, the lye tank has a temperature display function, and the lye is adjusted to a suitable electrolysis temperature (95±5°C) in the lye tank and then transported back to the array-module electrolytic cell through a lye circulation pump.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. In terms of improving electrolysis efficiency: the gas-liquid split circulation process has a significant effect. In the present invention, each electrolysis chamber module can achieve the simultaneous entry of cathode liquid from the cathode alkali liquid tank and anode liquid from the anode alkali liquid tank. When the electrolysis reaction occurs, the H 2 and O 2 The alkali liquid in the cathode and anode will be discharged smoothly from the top of each module. At the same time, the cathode alkali liquid and anode alkali liquid of each module will circulate back to the corresponding cathode alkali liquid tank and anode alkali liquid tank. The alkali liquid tank is not a closed space, which allows a small amount of gas carried in the cathode alkali liquid or anode alkali liquid to be naturally released into the air. In this way, during the alkali liquid circulation process, the insufficient reaction of the electrode surface due to the presence of gas is effectively avoided, which greatly improves the electrolysis efficiency.

[0030] 2. High alkali solution circulation efficiency: In traditional electrolytic water systems, when the gas-liquid mixture is circulated, the presence of gas can easily cause gas blockage in the pipeline. This not only greatly reduces the circulation efficiency of the alkali solution, but also significantly increases energy consumption. The gas-liquid diversion circulation process adopted in the present invention has unique advantages. In the present invention, each electrolytic chamber completes the gas-liquid separation work, which greatly reduces the occurrence of gas blockage caused by gas in the pipeline. By reducing the resistance in the alkali solution circulation process, not only the circulation efficiency of the alkali solution is improved, but also it is beneficial to reduce energy consumption, which provides a strong guarantee for the efficient operation of the entire electrolytic water system.

[0031] 3. Improved safety: In the traditional water electrolysis hydrogen production system, there are potential safety hazards that cannot be ignored. After the cathode alkali liquid and the anode alkali liquid flow out of the electrolyzer, they are processed by the separator and then merged together and flowed back into the electrolyzer. However, as the system runs for a long time, the H carried in the alkali liquid 2 and O 2 will gradually mix. Since hydrogen is flammable and oxygen is combustible, once the two are mixed and encounter a fire source or energy excitation, they are very likely to cause an explosion, seriously threatening the safe operation of the system. In contrast, the gas-liquid split circulation system proposed in the present invention has achieved a major breakthrough in safety. The present invention allows the cathode liquid to circulate independently between the cathode chamber and the cathode tank of the electrolytic cell, and the anode liquid to circulate independently between the anode chamber and the anode tank of the electrolytic cell. This circulation process fundamentally avoids H 2 and O 2 The mixing of gases effectively eliminates the risk of explosion caused by gas mixing, provides a solid guarantee for the safe and stable operation of the water electrolysis hydrogen production system, and significantly improves the safety of the system.

[0032] 4. More uniform lye concentration: In the solution of the present invention, the uniformity of the lye concentration is effectively guaranteed. Multiple electrolytic chambers work together, and their cathode lye all flows into the electrolytic cell from the cathode tank synchronously, and the anode lye also enters the electrolytic cell from the anode tank at the same time. After the electrolytic reaction, the cathode lye and the anode lye flow out at the same time, converge through the main pipeline, and then circulate back to their respective corresponding cathode tanks and anode tanks. Such a design enables the electrolyte concentration in the entire system to be basically maintained consistent, avoiding problems such as uneven electrolysis efficiency that may be caused by concentration differences.

[0033] 5. Improve the lye concentration adjustment mechanism: When the system runs for too long and the lye concentration shows an upward trend, the make-up water pumps equipped in the cathode lye tank and the anode lye tank will come into play. The make-up water pumps can be automatically started for precise water replenishment operations, thereby timely adjusting the lye concentration to ensure that the system is always in the best operating state.

[0034] In summary, the gas-liquid split circulation process of the present invention has significant advantages in the electrolytic water system. It can improve the electrolysis efficiency, and the gases are discharged separately after the reaction, avoiding insufficient electrode reactions. The present invention can also improve the lye circulation efficiency, reduce gas resistance and energy consumption. In terms of safety, it enables the independent circulation of the cathode and anode liquids, eliminating the explosion risk of hydrogen and oxygen mixing. The solution of the present invention can effectively control the lye concentration, ensure the stable operation of the system, and lay a solid foundation for the efficient and safe operation of the electrolytic water system. Brief Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0036] Figure 1 It is a schematic structural diagram of the novel array-modular electrolytic cell gas-liquid split circulation device provided by the present invention.

[0037] Figure 2 It is a schematic partial structure diagram of the array-modular electrolytic cell provided by the present invention;

[0038] In the accompanying drawings, the list of structures represented by each reference numeral is as follows: 1 - electrolysis cell, 2 - gas-liquid separator, 3 - gas treatment module, 4 - lye tank, 5 - lye circulation pump, 6 - frame, 7 - anode liquid inlet, 8 - cathode liquid inlet, 9 - anode liquid inlet main pipeline, 10 - cathode liquid inlet main pipeline, 11 - anode liquid outlet, 12 - cathode liquid outlet, 13 - anode liquid outlet main pipeline, 14 - cathode liquid outlet main pipeline, 15 - anode gas outlet, 16 - cathode gas outlet, 17 - anode gas outlet main pipeline, 18 - cathode gas outlet main pipeline, 19 - anode lye tank, 20 - cathode lye tank, 21 - anode lye circulation pump, 22 - cathode lye circulation pump. Detailed implementation manners

[0039] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0042] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0044] Example 1

[0045] A gas-liquid shunt circulation device in a novel array-modular electrolytic cell, comprising an array-module electrolytic cell, a gas-liquid separator 2, a gas treatment module 3, an alkali solution tank 4 and an alkali solution circulation pump 5;

[0046] Wherein, the array-module electrolytic cell is connected to the gas-liquid separator 2; the gas treatment module 3 is connected to the gas outlet of the gas-liquid separator 2; the alkali solution tank 4 is connected to the liquid outlet of the gas-liquid separator 2; the alkali solution circulation pump 5 is connected to the outlet of the alkali solution tank 4, and the alkali solution circulation pump 5 is connected to the liquid inlet of the array-module electrolytic cell;

[0047] The array-module electrolytic cell includes a frame 6 and a plurality of electrolytic chambers 1, and the plurality of electrolytic chambers 1 are regularly arranged and fixed within the frame 6,

[0048] The plurality of electrolytic chambers 1 are at least regularly arranged in two rows, any two electrolytic chambers 1 in the same row are connected in series, and any two electrolytic chambers 1 in different rows are connected in parallel.

[0049] In some embodiments, a make-up water pump is provided in the alkali solution tank 5.

[0050] In some embodiments, a plurality of gas-liquid separators 2 are provided,

[0051] Each of the electrolytic chambers 1 is provided with an anode liquid outlet 11 and a cathode liquid outlet 12, and each of the electrolytic chambers 1 is provided with an anode liquid inlet 7 and a cathode liquid inlet 8;

[0052] One gas-liquid separator 2 is provided at each of the anode liquid outlet 11 and the cathode liquid outlet 12 of each electrolytic chamber 1;

[0053] The gas-liquid separator at the anode liquid outlet 11 is provided with an anode gas outlet 15 and an anode liquid outlet; the gas-liquid separator at the cathode liquid outlet 12 is provided with a cathode gas outlet 16 and a cathode liquid outlet;

[0054] A plurality of anode gas outlets 15 are connected in parallel to form a total anode gas outlet pipeline 17; a plurality of cathode gas outlets 16 are connected in parallel to form a total cathode gas outlet pipeline 18.

[0055] In some embodiments, the lye tank 4 includes an anode lye tank 19 and a cathode lye tank 20; the lye circulation pump 5 includes an anode lye circulation pump 21 and a cathode lye circulation pump 22;

[0056] The anode lye tank 19 is connected to the anode lye circulation pump 21, and the cathode lye tank 20 is connected to the cathode lye circulation pump 22;

[0057] The anode lye circulation pump 21 is connected to the anode liquid inlets of a plurality of electrolysis chambers 1 through a total anode liquid inlet pipeline 9; the cathode lye circulation pump 22 is connected to the cathode liquid inlets of a plurality of electrolysis chambers 1 through a total cathode liquid inlet pipeline 10.

[0058] In some other embodiments, a plurality of anode liquid outlets are connected in parallel to form a total anode liquid outlet pipeline 13, and the total anode liquid outlet pipeline is connected to the anode lye tank 19;

[0059] A plurality of cathode liquid outlets are connected in parallel to form a total cathode liquid outlet pipeline 14, and the total cathode liquid outlet pipeline is connected to the cathode lye tank 20.

[0060] In some other embodiments, the gas treatment module includes an anode gas treatment module and a cathode gas treatment module; the anode gas treatment module is connected to the total anode gas outlet pipeline 17, and the cathode gas treatment module is connected to the total cathode gas outlet pipeline 18.

[0061] Example 2 A gas-liquid shunt circulation method in a new type of array-modular electrolytic cell

[0062] (1) In the array-module electrolytic cell, water electrolysis generates hydrogen, oxygen and lye. The gas-liquid mixture outlet enters the gas-liquid separation device. The gas-liquid separation device quickly separates the gas and liquid by gravity. The liquid gradually accumulates in the total liquid pipeline under the action of gravity and then flows back to the lye tank, while the gas rises to the total gas pipeline;

[0063] (2) The gas coming out of the total gas pipeline enters the gas treatment device. The gas is adsorbed by the desiccant in the gas treatment module to remove the contained moisture and impurities, and high-purity hydrogen and oxygen are obtained;

[0064] (3) The lye coming out of the total liquid pipeline passes through the lye tank. The lye tank has a temperature display function. After the lye is adjusted to the appropriate temperature range for electrolysis in the lye tank, it is re-transported back to the array-module electrolytic cell through the lye circulation pump to continue participating in the electrolysis reaction, realizing the recycling of the liquid.

[0065] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0066] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A novel array-modularized gas-liquid split circulation device in an electrolyzer, characterized in that: It includes an array-module electrolyzer, a gas-liquid separator, a gas processing module, a lye tank and a lye circulation pump; Wherein, the array-module electrolyzer is connected to the gas-liquid separator; the gas processing module is connected to the gas outlet of the gas-liquid separator; the alkali liquid tank is connected to the liquid outlet of the gas-liquid separator; the alkali liquid circulation pump is connected to the outlet of the alkali liquid tank, and the alkali liquid circulation pump is connected to the liquid inlet of the array-module electrolyzer; The array-module electrolyzer comprises a frame and a plurality of electrolysis chambers, wherein the plurality of electrolysis chambers are regularly arranged and fixed in the frame; A plurality of the electrolysis chambers are regularly arranged in at least two rows, any two of the electrolysis chambers in the same row are connected in series, and any two of the electrolysis chambers in different rows are connected in parallel.

2. According to the novel array-modularized gas-liquid split circulation device in the electrolytic cell of claim 1, it is characterized in that: The gas-liquid separators are provided with a plurality of them; the electrolysis chambers are provided with an anode liquid outlet and a cathode liquid outlet, and the electrolysis chambers are provided with an anode liquid inlet and a cathode liquid inlet; A gas-liquid separator is provided at the anode liquid outlet and cathode liquid outlet of each electrolysis chamber; The gas-liquid separator at the anode liquid outlet is provided with an anode gas outlet and an anode liquid outlet; the gas-liquid separator at the cathode liquid outlet is provided with a cathode gas outlet and a cathode liquid outlet; A plurality of the anode gas outlets are connected in parallel to form an anode gas outlet main pipeline; a plurality of the cathode gas outlets are connected in parallel to form a cathode gas outlet main pipeline.

3. According to the novel array-modularized gas-liquid split circulation device in the electrolytic cell of claim 2, it is characterized in that: The alkali liquid tank comprises an anode alkali liquid tank and a cathode alkali liquid tank; the alkali liquid circulation pump comprises an anode alkali liquid circulation pump and a cathode alkali liquid circulation pump; The anode alkali liquid tank is connected to the anode alkali liquid circulation pump, and the cathode alkali liquid tank is connected to the cathode alkali liquid circulation pump; The anode alkali solution circulation pump is connected to the anode liquid inlets of the plurality of electrolysis chambers through the anode liquid inlet main pipeline; the cathode alkali solution circulation pump is connected to the cathode liquid inlets of the plurality of electrolysis chambers through the cathode liquid inlet main pipeline.

4. According to claim 3, a novel array-modularized gas-liquid split circulation device in an electrolytic cell is characterized in that: A plurality of the anode liquid outlets are connected in parallel to form an anode liquid outlet main pipeline, and the anode liquid outlet main pipeline is connected to the anode alkali liquid tank; A plurality of cathode liquid outlets are connected in parallel to form a cathode liquid outlet main pipeline, and the cathode liquid outlet main pipeline is connected to the cathode alkali liquid tank.

5. According to the novel array-modularized gas-liquid split circulation device in the electrolytic cell of claim 2, it is characterized in that: The gas processing module comprises an anode gas processing module and a cathode gas processing module; the anode gas processing module is connected to the anode gas outlet main pipeline, and the cathode gas processing module is connected to the cathode gas outlet main pipeline.

6. A novel gas-liquid split circulation method in an array-modular electrolyzer, characterized in that: The device according to any one of claims 1 to 5 comprises the following steps: (1) In the array-module electrolyzer, water is electrolyzed to produce hydrogen, oxygen and alkali solution, and the gas-liquid mixture outlet enters the gas-liquid separation device, which quickly separates the gas and liquid by gravity. The liquid gradually gathers in the liquid main pipeline under the action of gravity, and then flows back to the alkali solution tank, while the gas rises to the gas main pipeline; (2) The gas coming out of the gas main pipeline enters the gas processing equipment. The gas is adsorbed by the desiccant in the gas processing module to remove the moisture and impurities contained in it, and obtain high-purity hydrogen and oxygen; (3) The alkali liquid coming out of the liquid main pipeline passes through the alkali liquid tank and is then transported back to the array-module electrolytic cell through the alkali liquid circulation pump to continue to participate in the electrolysis reaction, thereby realizing the recycling of the liquid.

7. According to claim 6, a novel gas-liquid split circulation method in an array-modular electrolyzer is characterized in that: The alkali liquid tank has a temperature display function, and the alkali liquid is adjusted to 90±5° C. in the alkali liquid tank and then transported back to the array-module electrolyzer through the alkali liquid circulation pump.

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