Gas-liquid separator based on alkaline electrolytic cell and small chamber type reaction and separation integrated device

Abstract

The invention provides a gas-liquid separator based on an alkaline electrolytic bath and a small chamber type reaction and separation integrated device. A separator inlet communicated with an inner cavity of a separator shell is formed in the side wall of one side of the separator shell and is communicated with an outlet of the alkaline electrolytic bath through a straight pipe; a gas-liquid mixture is separated through a baffle and a centrifuge in the gas-liquid separator, so that the separation efficiency can be effectively improved, and the energy consumption is reduced. According to the small chamber type reaction and separation integrated device, an electrolytic cell is decomposed into a plurality of small electrolysis chambers, a gas-liquid separator is correspondingly designed for an outlet of each small electrolysis chamber, and through the integrated design, the flowing path can be effectively simplified, the conveying distance of a gas-liquid mixture and the pressure loss of a pipeline are reduced, the system structure is simplified, and the energy consumption of the system is reduced; space and cost are saved, and system stability and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic cells, and in particular to a gas-liquid separator based on an alkaline electrolytic cell and a small chamber type reaction separation integrated device. Background Art

[0002] Alkaline electrolyzer is a device widely used in the production of hydrogen and oxygen. Its working principle is based on the electrolysis of alkaline solution, decomposing water through electrochemical reactions to produce hydrogen and oxygen. The gas (hydrogen and oxygen) in the electrolysis process and the remaining liquid (electrolyte) need to be separated by a gas-liquid separator. However, in the prior art, the traditional alkaline electrolyzer still has the following major problems and shortcomings in design and actual use:

[0003] (1) Low separation efficiency

[0004] The design of traditional alkaline electrolyzers usually transports the gas-liquid mixture to an external gas-liquid separation device through a pipeline after the electrolyzer reaction is completed. During this transportation process, the gas-liquid mixture will undergo long-distance transmission, and the flow state is often unstable, which is prone to turbulence, causing the rupture of the gas-liquid interface, and thus reducing the gas-liquid separation efficiency. Especially when the gas-liquid flow rate is high, the difficulty of separating the gas and liquid is further increased, affecting the separation effect, resulting in a decrease in the purity of hydrogen and oxygen, and thus affecting the overall efficiency of the electrolyzer.

[0005] (2) High energy consumption

[0006] In traditional designs, long-distance transportation of gas-liquid mixtures will generate additional pressure losses. Especially on an industrial scale, pipelines usually need to span a long distance to connect the electrolytic reaction unit and the gas-liquid separation device. During the transportation process, due to the instability of the gas-liquid two-phase flow in the pipeline and the existence of friction resistance, the pump needs to consume more energy to maintain the transportation of the fluid. This not only significantly increases the energy consumption of the system, but may also cause the load on the pump and other auxiliary equipment to be too heavy, thereby affecting the long-term operation stability and energy efficiency of the system.

[0007] (3) Complex device structure

[0008] Traditional alkaline electrolyzer systems require the reaction unit, delivery pipeline, and independent gas-liquid separator to be designed separately and connected in series through multiple connection components (such as pipes, valves, etc.). Such a structure not only increases the volume and floor space of the system, but also requires additional sealing between the pipes and equipment to avoid gas leakage. Due to the complex connection and pipeline configuration required between the devices, the installation, commissioning, and maintenance of the equipment are labor-intensive, increasing the operation and maintenance costs of the plant, and are prone to failures caused by improper pipe connections or equipment aging.

[0009] (4) Potential gas safety hazards

[0010] In the process of transporting gas-liquid mixtures over long distances, gas, especially hydrogen, may accumulate in the pipeline, causing the risk of gas leakage. Hydrogen has a low explosion limit, and when the concentration reaches a certain value, it may cause an explosion when it encounters a fire source or high temperature. Therefore, traditional designs are prone to safety hazards in the transportation of gas-liquid mixtures. Gas leakage and pipeline rupture not only pose a threat to operators and equipment, but may also have a catastrophic impact on the surrounding environment, especially in the application of hydrogen, where safety issues are more prominent.

[0011] In response to the above problems, the industry has also made certain improvements to the alkaline electrolyzer, mainly including:

[0012] (1) Optimize pipeline layout: reduce pipeline length to reduce pressure loss, but still rely on independent gas-liquid separation devices, and the overall complexity of the system has not been significantly reduced.

[0013] (2) Mechanical separation: Using cyclone separators or foam separators to improve the gas-liquid separation efficiency, but this increases the equipment cost and has a certain impact on system stability.

[0014] (3) Membrane separation technology: selectively permeable membranes are used for separation to improve the purity of hydrogen and oxygen. However, the membrane material is expensive and has poor durability, making it difficult to promote in large-scale industrial applications. Summary of the invention

[0015] The technical problem to be solved by the present invention is: In order to overcome the shortcomings of the prior art, the present invention provides a gas-liquid separator and a small chamber reaction separation integrated device based on an alkaline electrolytic cell to solve the problems of energy loss in the transportation process, low gas-liquid separation efficiency, and complex system structure in the prior art. Through an integrated design, the present invention aims to improve the gas-liquid separation efficiency, reduce the transportation distance and pressure loss, reduce the overall energy consumption, simplify the equipment structure, and improve the operating stability and economy of the system.

[0016] The technical solution adopted by the present invention to solve its technical problems is: a gas-liquid separator based on an alkaline electrolytic cell, comprising a separator shell, wherein the separator shell has a separation liquid outlet at the bottom and a gas outlet at the top, and a separator inlet that penetrates the inner cavity of the separator shell is opened on one side wall of the separator shell, and the separator inlet is connected with the outlet of the alkaline electrolytic cell through a straight pipe; a plurality of baffles are distributed on the inner wall of the inner cavity of the separator shell corresponding to the separator inlet; a centrifuge is arranged at the bottom of the inner cavity of the separator shell corresponding to the position of the separation liquid outlet, and the centrifuge is located below the lowest baffle in the height direction.

[0017] In the above scheme, in order to address the problems of energy loss in the transportation process, low gas-liquid separation efficiency and complex system structure, a separator is connected to the outlet of the alkaline electrolytic cell. The gas-liquid mixture produced by the electrolytic cell reaction can be directly sent to the separator for gas-liquid separation. The gas-liquid mixture flows within a short distance, avoiding gas-liquid interface disturbance in long pipeline transmission, effectively reducing the overlap and entrainment of gas and liquid, thereby significantly improving the efficiency of gas-liquid separation.

[0018] Furthermore, the separator inlet and the alkaline electrolytic cell outlet provided on the side wall of the separator housing are concentrically arranged with the straight pipe, and the axis of the straight pipe is arranged horizontally. The separator inlet, the alkaline electrolytic cell outlet and the straight pipe are designed to be concentric, and the axis is parallel to the horizontal direction, so that the gas-liquid interface disturbance caused by different conveying direction angles can be further reduced during the conveying process of the mixture, and the unstable movement of the gas-liquid mixture can be avoided, thereby reducing the pipeline pressure loss, and reducing the load and energy consumption of the pump.

[0019] Furthermore, the baffle includes a plurality of upper baffles and a plurality of arc-shaped baffles arranged in sequence from top to bottom, and the upper baffles and the arc-shaped baffles have a plurality of apertures; the upper baffle is connected by two straight plates to form an obtuse structure with an opening downward; the number of the arc-shaped baffles is at least two, and the opening directions of the two upper and lower adjacent arc-shaped baffles are opposite and staggered. Through the distribution of the arc-shaped baffles and the upper baffles, the flow direction of the gas-liquid mixture after entering the inner cavity of the separator shell is further rationally planned and distributed, so as to facilitate its effective separation at the baffle position.

[0020] A chamber-type reaction-separation integrated device based on an alkaline electrolytic cell comprises a plurality of electrolytic chambers, each of which has an electrolytic liquid inlet and an electrolytic liquid outlet, wherein the electrolytic liquid outlet of each electrolytic chamber is correspondingly connected to a gas-liquid separator, and the gas-liquid separator is a gas-liquid separator based on an alkaline electrolytic cell as described in any one of claims 1 to 5.

[0021] In the small-chamber reaction and separation integrated device, the electrolytic cell is decomposed into several electrolytic chambers, and a gas-liquid separator is designed corresponding to the outlet of each electrolytic chamber. In this way, each electrolytic chamber performs electrolytic reaction separately, and the gas-liquid mixture generated by the reaction is separated separately by its corresponding gas-liquid separator. Compared with the traditional centralized long pipeline transported to the total gas-liquid separation equipment for separation, the gas-liquid mixture needs to flow through a shorter pipeline during separation, the gas-liquid interface disturbance is less, the overlap and entrainment of gas and liquid are less, and the energy loss is less, so the gas purity of the small-chamber reaction and separation integrated device and the stability of the electrolysis process can be guaranteed.

[0022] Correspondingly, the outlet pipeline of the gas-liquid separator has been further rationally planned. The chamber-type reaction separation integrated device includes several layers of electrolytic chambers stacked up and down, wherein each layer of electrolytic chambers includes several electrolytic chambers arranged in sequence in the horizontal direction, the gas outlets of the gas-liquid separators corresponding to the electrolytic chambers on the same layer converge to the same gas outlet pipeline, and the separation liquid outlets of the gas-liquid separators corresponding to the electrolytic chambers on the same layer converge to the same separation liquid outlet pipeline; the outlets of the gas outlet pipelines of each layer converge to the same total gas outlet pipeline, and the outlets of the separation liquid outlet pipelines of each layer converge to the same total separation liquid outlet pipeline.

[0023] Correspondingly, the liquid inlet pipeline of the electrolysis chamber is also reasonably planned. The chamber-type reaction separation integrated device has a total electrolysis liquid inlet pipeline, and the total electrolysis liquid inlet pipeline corresponds to each layer of electrolysis chambers and has layered liquid inlet pipelines corresponding to each layer of branches; each electrolysis chamber has an electrolysis liquid inlet at the bottom, and the electrolysis liquid inlets of the electrolysis chambers on the same layer are respectively connected to the layered liquid inlet pipelines of the corresponding layer.

[0024] The beneficial effect of the present invention is that the present invention provides a gas-liquid separator based on an alkaline electrolytic cell and a small chamber type reaction separation integrated device, the gas-liquid separator is reasonably designed, and the gas-liquid separator is directly connected to the gas-liquid mixture generated by the alkaline electrolytic cell through a straight pipe, which can effectively separate the gas and liquid for the alkaline electrolytic cell, and effectively improve the gas-liquid separation efficiency. In the integrated device, the gas-liquid separator is integrated in each electrolytic chamber, which not only effectively reduces the distance of gas-liquid mixture transportation and pipeline pressure loss, reduces the load and energy consumption of the pump, but also makes the gas-liquid mixture smoother during transportation, avoids leakage in long pipelines, gas accumulation or temperature fluctuations, and reduces safety hazards in operation. The integrated design saves space and cost of the equipment, has strong adaptability and high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a partially cutaway stereoscopic view of the gas-liquid separator of the present invention.

[0027] Figure 2 It is a partially cutaway front view of the gas-liquid separator of the present invention.

[0028] Figure 3 It is a three-dimensional diagram of the electrolysis chamber of the present invention.

[0029] Figure 4 It is a stereoscopic view of the electrolysis chamber of the present invention from another angle.

[0030] Figure 5 It is a three-dimensional diagram of the integrated device of the present invention.

[0031] Figure 6It is a three-dimensional diagram of the integrated device of the present invention from another angle.

[0032] Figure 7 It is a rear view of the integrated device of the present invention.

[0033] Figure 8 It is a side view of the integrated device of the present invention.

[0034] In the figure, 1, separator inlet 2-1, upper baffle 2-2, arc baffle 3, centrifuge 4, gas outlet 5, separation liquid outlet 6, electrolysis chamber 7, handle 8, electrolysis liquid outlet 9, gas-liquid separator 10, pole ear 11, total electrolysis liquid inlet pipeline 12, total separation liquid outlet pipeline 13, total gas outlet pipeline. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0036] like Figure 1 and Figure 2 The gas-liquid separator based on an alkaline electrolytic cell shown is an embodiment of the gas-liquid separator 9 in the present application. The gas-liquid separator based on an alkaline electrolytic cell includes a separator housing. The separator housing has a separation liquid outlet 5 at the bottom and a gas outlet 4 at the top, and a separator inlet 1 that is connected to the inner cavity of the separator housing is opened on a side wall of one side of the separator housing.

[0037] The separator inlet 1 is connected to the outlet of the alkaline electrolyzer through a straight pipe. In this embodiment, the separator inlet 1 opened on the side wall of the separator housing, the outlet of the alkaline electrolyzer and the straight pipe are concentrically arranged, and the axis of the straight pipe is parallel to the horizontal direction. The inner wall of the separator inlet 1 is smoothed to reduce the flow resistance while maintaining the uniformity of the fluid distribution. The separator inlet 1, the outlet of the alkaline electrolyzer and the straight pipe are designed to be concentric, and the axis is parallel to the horizontal direction, so that the mixture can further reduce the gas-liquid interface disturbance caused by the different angles of the conveying direction during the transportation process, and avoid the unstable movement of the gas-liquid mixture. At the same time, the gas-liquid mixture produced by electrolysis can directly enter the separator through a straight pipe for separation, without the need to be collected through various pipelines and bends, so the pipeline pressure loss can be effectively saved. At the same time, in the traditional technology, due to the long pipeline and the unstable movement of the gas-liquid mixture, additional equipment and energy are required to maintain the stable transportation of the fluid. In this embodiment, the separator is directly connected to the outlet of the alkaline electrolyzer through a straight pipe, which effectively simplifies the flow path, reduces the dependence on external auxiliary equipment, and significantly reduces the energy consumption of the entire system.

[0038] In the internal design of the separator, two groups of baffles are distributed from top to bottom on the inner wall of the separator shell cavity corresponding to the separator inlet 1. Located at the top are two upper baffles 2-1. The upper baffle 2-1 is connected by two straight plates and forms an obtuse structure with an opening facing downward. Located at the bottom are two arc-shaped baffles 2-2, the opening directions of the two arc-shaped baffles 2-2 are opposite and staggered up and down. The baffles are used to preliminarily separate gas and liquid. The upper baffle 2-1 and the arc-shaped baffle 2-2 both have multiple pores to reduce gas entrainment and guide the liquid to settle downward. Through the distribution of the arc-shaped baffle 2-2 and the upper baffle 2-1, the flow direction of the gas-liquid mixture after entering the inner cavity of the separator shell is further rationally planned and distributed, so as to facilitate its effective separation at the baffle position.

[0039] A centrifuge 3 is provided at the bottom of the inner cavity of the separator shell at a position corresponding to the separation liquid outlet 5, and the centrifuge 3 is located below the lowest baffle in the height direction. The centrifuge 3 can be, but is not limited to, a rotary cyclone centrifuge 3. The gas-liquid mixture entering the separator is first subjected to preliminary gravity separation at the arc baffle 2-2, and the separated liquid sinks along the inner wall of the separator, and the remaining gas-liquid mixture enters the cyclone centrifuge 3 and is further separated under the action of centrifugal force. Another part of the gas-liquid mixture continues to be separated through the upper baffle 2-1, and the purified gas is discharged from the top outlet 4, and the outlet 4 is equipped with a check valve to prevent gas reflux. The liquid is discharged from the bottom separation liquid outlet 5. The discharged liquid is transported back to the electrolyte recovery system of the alkaline electrolytic cell through a pipeline for recycling and reuse.

[0040] In the actual discharge of gas, the gas outlet 4 of the gas-liquid separator 9 is specially designed for the discharge of hydrogen or oxygen, and the outlet can be designed with an explosion-proof device to ensure the safety of gas discharge.

[0041] In this way, the gas-liquid separator 9 provided in this embodiment addresses the problems of energy loss in the transportation process, low gas-liquid separation efficiency and complex system structure. The gas-liquid mixture after the reaction in the alkaline electrolytic cell is directly connected to the separator through a straight pipe at the outlet of the alkaline electrolytic cell, thereby avoiding the disturbance of the gas-liquid interface in the long pipeline transmission. The gas-liquid mixture flows in a short distance, effectively reducing the overlap and entrainment of gas and liquid, thereby significantly improving the efficiency of gas-liquid separation.

[0042] like Figure 5 and Figure 6 The small chamber type reaction and separation integrated device based on an alkaline electrolytic cell shown is an embodiment of the small chamber type reaction and separation integrated device of the present invention.

[0043] The chamber-type reaction-separation integrated device has a plurality of electrolytic chambers 6. Each electrolytic chamber 6 has an electrolytic liquid inlet and an electrolytic liquid outlet 8, wherein the electrolytic liquid outlet 8 of each electrolytic chamber 6 is correspondingly connected to a gas-liquid separator 9 described above, which is used to directly perform gas-liquid separation operations on the electrolyte produced by each electrolytic chamber 6.

[0044] The integrated device adopts a modular structure, and a plurality of electrolytic chambers 6 are stacked together to form an electrolytic cell. Specifically, in this embodiment, the plurality of electrolytic chambers 6 are stacked in two layers, each layer of electrolytic chambers 6 includes a plurality of electrolytic chambers 6 that are arranged in sequence in the horizontal direction, and a handle 7 is provided on the side wall of the electrolytic chamber 6, which can facilitate the movement of a single electrolytic chamber 6 relative to other electrolytic chambers 6 and the corresponding installation operation.

[0045] The electrolysis chamber 6 is the core unit for the electrolysis reaction, which is closely connected to the gas-liquid separator 9, and can directly reduce the flow path of the gas-liquid mixture. The bottom of the electrolysis chamber 6 has an electrolysis inlet, and the top has an electrolysis outlet 8, which is connected to the separator inlet 1 of the corresponding gas-liquid separator 9 through a straight pipe. The electrolysis chamber 6 is provided with a pole ear 10, which is made of corrosion-resistant material and is used to connect the cathode and anode of the electrolysis chamber 6, and is used to transmit current, so as to provide stable current conduction for the internal reaction of the electrolysis chamber 6, thereby supporting the normal progress of the electrolysis reaction.

[0046] The cathode, anode, diaphragm and other structures of the electrolysis chamber 6 are conventional structures of existing alkaline electrolytic cells. In this embodiment, the electrolysis chamber 6 is designed to have a size of 100 mm × 100 mm × 30 mm, and is provided with an anode, a cathode and a diaphragm. The anode material is a nickel-based alloy, the cathode material is nickel foam, and the diaphragm is a ceramic microporous membrane. The corresponding gas-liquid separator 9 is connected to the electrolysis chamber 6 through a straight pipe, and the overall size of the gas-liquid separator 9 is 150 mm × 80 mm × 50 mm.

[0047] In view of the sequential arrangement of a plurality of electrolytic chambers 6 in the horizontal direction and the stacked distribution in the height direction, the chamber-type reaction and separation integrated device has made a more reasonable planning for the pipeline between each electrolytic chamber 6 and the corresponding gas-liquid separator 9, so as to achieve a better effect.

[0048] Specifically, in the distribution of the outlet pipelines of the gas-liquid separator 9, the gas outlets 4 of the gas-liquid separator 9 corresponding to the electrolysis chamber 6 on the same layer converge to the same gas outlet pipeline, and the separation liquid outlets 5 of the gas-liquid separator 9 corresponding to the electrolysis chamber 6 on the same layer converge to the same separation liquid outlet pipeline. The total separation liquid outlet pipeline 12 is connected to the electrolyte recovery system for recovering the electrolyte and recycling it. The outlets of the gas outlet pipelines of each layer converge to the same total gas outlet pipeline 13, and the gas outlet pipelines of each layer are parallel to the horizontal direction. The outlets of the separation liquid outlet pipelines of each layer converge to the same total separation liquid outlet pipeline 12, and the separation liquid outlet pipelines of each layer are also arranged parallel to the horizontal direction. The gas outlet 4 of the total gas outlet pipeline 13 can be equipped with an explosion-proof device to ensure safety. The gas outlet 4 of the total gas outlet pipe is connected to a gas storage device to store the discharged hydrogen or oxygen to avoid interference with the gas outlet from the outside.

[0049] In the distribution of the inlet pipelines of the electrolysis chamber 6, the chamber-type reaction separation integrated device has a total electrolysis inlet pipeline 11, which corresponds to each layer of electrolysis chambers 6, and has a layered inlet pipeline corresponding to each layer of branches; each electrolysis chamber 6 has an electrolysis inlet at the bottom, and the electrolysis inlets of the electrolysis chambers 6 on the same layer are respectively connected to the layered inlet pipelines of the corresponding layer, and the arrangement direction of the layered inlet pipelines of the electrolysis chambers 6 on the same layer is parallel to the horizontal direction. The total inlet pipeline is used to introduce fresh electrolyte into the system to keep the electrolysis reaction going.

[0050] In the small-chamber reaction and separation integrated device, the electrolytic cell is decomposed into a number of electrolytic chambers 6, and a gas-liquid separator 9 is designed corresponding to the outlet of each electrolytic chamber 6. In this way, each electrolytic chamber 6 performs an electrolytic reaction separately, and the gas-liquid mixture generated by the reaction is separately subjected to gas-liquid separation operation by its corresponding gas-liquid separator 9. Compared with the traditional centralized long pipeline transported to the total gas-liquid separation equipment for separation, the gas-liquid mixture needs to flow through a shorter pipeline during separation, the gas-liquid interface disturbance is less, the overlap and entrainment of gas and liquid are less, and the energy loss is less, so the gas purity of the small-chamber reaction and separation integrated device and the stability of the electrolysis process can be guaranteed.

[0051] At the same time, corresponding to the layer arrangement and the up and down stacking distribution of the electrolysis chamber 6, the liquid access of the electrolysis chamber 6 is connected by a main pipe branched in the horizontal direction, and the gas and liquid access of the gas-liquid mixture are also branched in the horizontal direction to connect to the main gas outlet pipeline 13 and the main separation liquid outlet pipeline 12. In the connection and discharge directions of the liquid, gas and gas-liquid mixture, they are transported in the horizontal direction, which further improves the stability of the transportation and reduces the energy consumption generated during the transportation process.

[0052] Working principle:

[0053] 1. 30% potassium hydroxide solution is injected into the electrolysis chamber 6 through the liquid inlet, the temperature is maintained at 90°C, and the working current density is 5000A / m2.

[0054] 2. Under the action of the anode and cathode, the electrolyte undergoes a decomposition reaction to generate hydrogen and oxygen, which mix with the liquid to form a gas-liquid mixture.

[0055] 3. The gas-liquid mixture directly enters the gas-liquid separator 9 through the outlet, and is first subjected to preliminary gravity separation at the primary baffle, and the separated liquid sinks along the inner wall of the separator.

[0056] 4. The remaining gas-liquid mixture enters the cyclone separator and is further separated under the action of centrifugal force. Finally, the purified gas is discharged from the top outlet, and the liquid flows back to the recovery system from the bottom outlet for electrolyte recycling.

[0057] In this embodiment, the integrated design directly configures the gas-liquid separator 9 at the outlet of the electrolysis chamber 6, so that the gas-liquid mixture can be separated without long-distance transportation, thereby improving the separation efficiency. With a modular structure, each electrolysis chamber 6 performs gas-liquid separation independently, reducing the complexity of the system. The integrated design also realizes the short-path transportation of the gas-liquid mixture, avoids the gas-liquid interface disturbance caused by long pipeline transportation, and can further improve the purity of hydrogen and oxygen. At the same time, short-path transportation reduces the pressure loss of the long pipeline, reduces the system pump power demand, and reduces the overall energy consumption by about 15-20%. The gas-liquid mixture is separated within a short distance, reducing the risk of hydrogen accumulation in the pipeline and improving the safety of the system. In the gas-liquid separator 9, through the combined design of the upper baffle 2-1 and the arc baffle 2-2, after the gas-liquid mixture is introduced into the straight pipe, the gas-liquid flow is guided to make the separation more efficient. The cyclone centrifuge technology is combined below the inner cavity of the gas-liquid separator 9 to further improve the gas-liquid separation efficiency by centrifugal force, further optimizing the control of the fluid.

[0058] The chamber-type reaction-separation integrated device provided in this embodiment was experimentally compared with a traditional alkaline electrolytic cell, and the data are as follows:

[0059] project Traditional design This embodiment Improvement Gas-liquid separation efficiency 89％ 99.5％ +10.5％ Hydrogen purity 90％ 99.5％ +9.5％ System energy consumption 100％ 80-85％ 15-20% decrease Equipment area 100％ 70％ 30% decrease Maintenance costs high Low 20-30% reduction

[0060] Through experiments, it was found that the above-mentioned small-chamber reaction separation integrated device has high separation efficiency, and the hydrogen purity is increased to more than 99.5%, which is about 10% higher than the traditional design; due to the short-distance connection and low flow resistance design, the pump power demand is reduced, which can effectively reduce energy consumption; the overall device occupies 30% less space, which is suitable for laboratories and small hydrogen production equipment. The device is compact and has good performance, which can effectively reduce manufacturing, installation and maintenance costs.

[0061] The chamber-type reaction separation integrated device designed in this way integrates the gas-liquid separator 9 in each electrolysis chamber 6, which has the following advantages:

[0062] 1. Improve gas-liquid separation efficiency

[0063] By directly integrating the reaction chamber of the alkaline electrolytic cell with the gas-liquid separator 9, the gas-liquid mixture flows in a short distance, avoiding the disturbance of the gas-liquid interface during long pipeline transmission, effectively reducing the overlap and entrainment of gas and liquid, and thus significantly improving the efficiency of gas-liquid separation. This improvement ensures the purity of gas production and the stability of the electrolysis process, and reduces the complexity of subsequent processing.

[0064] 2. Reduce energy consumption

[0065] The integrated design of this embodiment reduces the distance of gas-liquid mixture transportation and pipeline pressure loss, and reduces the load and energy consumption of the pump. In traditional technology, due to the long pipeline length and unstable movement of gas-liquid mixture, additional equipment and energy are required to maintain stable fluid transportation. However, this embodiment simplifies the flow path, reduces the dependence on external auxiliary equipment, and significantly reduces the energy consumption of the entire system.

[0066] 3. Simplify system structure

[0067] The traditional alkaline electrolyzer and the gas-liquid separator 9 are often installed separately and require a complex pipeline and valve system to connect, which not only increases the footprint of the equipment, but also makes the installation, commissioning and maintenance of the system more cumbersome. By integrating the reaction chamber and the gas-liquid separator 9 into one system, this embodiment greatly simplifies the equipment structure, reduces the number of external pipelines and connectors, and reduces the installation cost and maintenance difficulty.

[0068] 4. Improve system stability and security

[0069] The integrated design makes the gas-liquid mixture smoother during transportation, avoids leakage, gas accumulation or temperature fluctuations in long pipelines, and reduces safety hazards in operation. Especially in the hydrogen production process, it reduces the risk of gas leakage and improves the safety of the system. At the same time, after the system structure is simplified, the number of failure points is reduced, and the overall operation is more stable and reliable.

[0070] 5. Save space and cost

[0071] The integrated design of this embodiment not only reduces the space occupied by the equipment, but also reduces the comprehensive cost of manufacturing, installation, commissioning and maintenance. Compared with the traditional separate design, the system is more economical, especially suitable for miniaturized and modular production lines, and can effectively reduce the initial investment and long-term operating costs in industrial applications.

[0072] 6. Strong adaptability and high flexibility

[0073] Due to the close integration of the gas-liquid separator 9 and the reaction chamber, this embodiment can flexibly adjust the gas-liquid separation method and parameters according to the gas output and flow requirements of the electrolysis process, and adapt to production applications of different scales and different process requirements. This flexibility makes the present invention have broad adaptability and application prospects in a variety of industrial application scenarios. For example, in laboratories and small hydrogen production devices, due to the compact structure of the equipment, it is suitable for scientific research institutions and small and medium-sized hydrogen production applications; in industrial-scale hydrogen production, the modular design can be flexibly expanded and is suitable for large-scale hydrogen production; in renewable energy hydrogen production systems, it can be further combined with renewable energy such as wind energy and solar energy to improve energy utilization efficiency.

[0074] 7. Environmentally friendly, reducing carbon footprint

[0075] This embodiment reduces energy consumption by improving electrolysis efficiency and reducing energy consumption, thereby reducing carbon emissions to a certain extent, and is highly environmentally friendly. Especially when applied on a large scale, it can have a positive impact on energy conservation and emission reduction, and is in line with the development trend of green and low-carbon production.

[0076] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A gas-liquid separator based on an alkaline electrolytic cell, characterized in that: The separator comprises a separator housing, wherein the bottom of the separator housing has a liquid separation outlet (5) and the top has a gas outlet (4), and a separator inlet (1) which is connected to the inner cavity of the separator housing is formed on a side wall of one side of the separator housing, and the separator inlet (1) is connected to the outlet of the alkaline electrolytic cell through a straight pipe; A plurality of baffles are distributed on the inner wall of the separator housing cavity corresponding to the separator inlet (1); A centrifuge (3) is provided at the bottom of the inner cavity of the separator housing at a position corresponding to the separation liquid outlet (5), and the centrifuge (3) is located below the lowest baffle in the height direction.

2. A gas-liquid separator based on an alkaline electrolytic cell as claimed in claim 1, characterized in that: The separator inlet (1) opened on the side wall of the separator shell, the outlet of the alkaline electrolytic cell and the straight pipe are arranged concentrically, and the axis of the straight pipe is arranged horizontally.

3. A gas-liquid separator based on an alkaline electrolytic cell as claimed in claim 1, characterized in that: The baffle comprises a plurality of upper baffles (2-1) and a plurality of arc-shaped baffles (2-2) which are arranged in sequence from top to bottom, and the upper baffles (2-1) and the arc-shaped baffles both have a plurality of pores; the upper baffle (2-1) is connected by two straight plates to form an obtuse-angle structure with an opening downward; the number of the arc-shaped baffles (2-2) is at least two, and the opening directions of the two upper and lower adjacent arc-shaped baffles (2-2) are opposite and staggered.

4. A small chamber reaction and separation integrated device based on an alkaline electrolytic cell, characterized in that: A plurality of electrolytic chambers (6) are provided, each of which has an electrolytic liquid inlet and an electrolytic liquid outlet (8), wherein the electrolytic liquid outlet (8) of each electrolytic chamber (6) is correspondingly connected to a gas-liquid separator (9), and the gas-liquid separator (9) is a gas-liquid separator based on an alkaline electrolytic cell as described in any one of claims 1 to 3.

5. The small chamber type reaction and separation integrated device based on the alkaline electrolytic cell according to claim 4, characterized in that: The invention comprises a plurality of layers of electrolysis chambers (6) stacked up and down, wherein each layer of electrolysis chambers (6) comprises a plurality of electrolysis chambers (6) arranged in sequence in a horizontal direction, the gas outlets (4) of the gas-liquid separators (9) corresponding to the electrolysis chambers (6) in the same layer converge into the same gas outlet pipeline, and the separation liquid outlets (5) of the gas-liquid separators (9) corresponding to the electrolysis chambers (6) in the same layer converge into the same separation liquid outlet pipeline; the outlets of the gas outlet pipelines of each layer converge into the same total gas outlet pipeline (13), and the outlets of the separation liquid outlet pipelines of each layer converge into the same total separation liquid outlet pipeline (12).

6. The small chamber type reaction and separation integrated device based on the alkaline electrolytic cell according to claim 5, characterized in that: The invention provides a total electrolysis liquid inlet pipeline (11), wherein the total electrolysis liquid inlet pipeline (11) corresponds to each layer of electrolysis chambers (6) and has a layered liquid inlet pipeline corresponding to each layer of branches; each electrolysis chamber (6) has an electrolysis liquid inlet port at the bottom, and the electrolysis liquid inlets of the electrolysis chambers (6) on the same layer are respectively connected to the layered liquid inlet pipelines of the corresponding layers.

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