A hydrogen production pry-mounted device for alkaline electrolysis of water

Abstract

The utility model provides a kind of hydrogen is made by alkaline electrolytic water pry equipment, it is related to electrolytic water hydrogen production equipment technical field, including pry container, electrolytic reactor, separation and purification device and electric control device, pry container inside is provided with first installation area and second installation area independent of each other;Electrolytic reactor and separation and purification device are all arranged in first installation area, electric control device is arranged in second installation area;The utility model integrates electrolytic reactor, separation and purification device and electric control device by pry container, realize the orderly layout of each core component, on the one hand, fundamentally compresses the land area of complete set of device, greatly optimizes space utilization, applicable to a variety of application scenarios, on the other hand, high integration, when equipment is put into operation, only need to complete pry container overall in place and the simple connection of external pipeline interface, greatly simplify installation process, shorten installation period, reduce the manpower and time cost of field installation.

Description

Technical Field

[0001] This utility model relates to the technical field of water electrolysis hydrogen production equipment, specifically to an alkaline water electrolysis hydrogen production skid-mounted equipment. Background Technology

[0002] Against the backdrop of a global push for energy structure transformation and the active development of clean energy, hydrogen energy, with its advantages of zero carbon emissions and high energy density, has become an important component of the future energy system. Alkaline water electrolysis for hydrogen production technology has been widely used in industrial hydrogen production due to its mature process, readily available raw materials, and relatively low operating costs. However, existing alkaline water electrolysis hydrogen production devices still suffer from two major problems in practical application due to structural design flaws, severely restricting their application scope and efficiency. On the one hand, the large footprint is a significant issue, making it unsuitable for space-constrained scenarios. The core components of existing alkaline water electrolysis hydrogen production units are all independently designed individual units, each requiring separate installation areas. To ensure adequate heat dissipation, operating space, and reasonable piping connections during normal operation, substantial distances must be reserved between individual units, significantly increasing the overall installation space requirements. This makes it difficult to deploy the unit in space-constrained environments such as compact industrial parks, distributed hydrogen production sites, and temporary hydrogen consumption locations, severely limiting its application scope. On the other hand, low integration leads to a series of chain problems, affecting the practicality and stability of the device. Because the various components of an alkaline electrolysis hydrogen production system are independent, each device must be transported, positioned, and secured separately during installation, followed by individual pipe and electrical connections. This process is not only cumbersome and time-consuming, but also increases the risk of poor sealing due to multiple interface connections, potentially leading to hydrogen leaks and alkaline leakage. Furthermore, the lack of unified structural support and protection for these independently installed devices makes them susceptible to external environmental interference (such as ground vibration and temperature changes) during operation, resulting in poor stability of coordinated operation and consequently affecting hydrogen production efficiency and purity, increasing the difficulty and cost of maintenance. These problems make existing alkaline electrolysis hydrogen production systems unable to meet the current market demand for efficient, convenient, and flexible hydrogen production equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a skid-mounted alkaline water electrolysis hydrogen production device to solve the above-mentioned technical problems in the prior art; the preferred technical solutions among the many technical solutions provided by this utility model can produce many technical effects, as detailed below.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This utility model provides a skid-mounted equipment for producing hydrogen through alkaline water electrolysis, comprising a skid-mounted container, an electrolysis reactor, a separation and purification device, and an electrical control device, wherein: the skid-mounted container is provided with a first installation area and a second installation area that are independent of each other; the electrolysis reactor and the separation and purification device are both located in the first installation area, and the electrical control device is located in the second installation area.

[0005] Preferably, the separation and purification device includes a skid-mounted integrated frame, a cathode separation device, an anode separation device, and a purification device, wherein: the skid-mounted integrated frame is fixedly installed in the first installation area; the cathode separation device, the anode separation device, and the purification device are all installed on the skid-mounted integrated frame.

[0006] Preferably, the cathode separation device includes a cathode alkali circulation pump, a cathode alkali filter, a cathode alkali heat exchanger, and a cathode alkali separation heat exchanger, wherein: the cathode alkali circulation pump, the cathode alkali filter, the cathode alkali heat exchanger, and the cathode alkali separation heat exchanger are cyclically connected; the cathode alkali separation heat exchanger is connected to a hydrogen gas connecting pipe, and the hydrogen gas connecting pipe is connected to the purification device; the purification device is connected to a hydrogen gas outlet pipe.

[0007] Preferably, the anode separation device includes an anode alkali solution circulation pump, an anode alkali solution filter, an anode alkali solution heat exchanger, and an anode alkali solution separation heat exchanger, wherein: the anode alkali solution circulation pump, the anode alkali solution filter, the anode alkali solution heat exchanger, and the anode alkali solution separation heat exchanger are cyclically connected, and the anode alkali solution separation heat exchanger is connected to an oxygen outlet pipe.

[0008] Preferably, the skid-mounted integrated frame is configured as a hierarchical structure, including an upper support and a lower support, wherein: the cathode alkali circulation pump, the cathode alkali filter, the anode alkali circulation pump, and the anode alkali filter are all mounted on the lower support; the cathode alkali separation heat exchanger, the cathode alkali heat exchanger, the anode alkali separation heat exchanger, the anode alkali heat exchanger, and the purification device are all mounted on the upper support.

[0009] Preferably, the separation and purification device includes an alkali preparation device, which includes an alkali preparation tank and a replenishment pump, wherein: the cathode separation device and the anode separation device are connected to the outlet end of the alkali preparation tank through a liquid preparation pipeline; a replenishment pipe is connected to the replenishment end of the alkali preparation tank, and the replenishment pump is installed on the replenishment pipe.

[0010] Preferably, the separation and purification device includes an alkali removal device, which includes an alkali removal tank and an alkali removal pump, wherein: the cathode separation device and the anode separation device are connected to the inlet end of the alkali removal tank through a liquid return pipeline; the outlet end of the alkali removal tank is connected to an outlet pipe, and the alkali removal pump is installed on the outlet pipe.

[0011] Preferably, the skid-mounted container includes a container body, and a vertical partition is provided inside the container body, which divides the inner cavity of the container body into a first installation area and a second installation area.

[0012] Preferably, the electrical control device includes an electrical control cabinet, a power supply cabinet, and a PLC control cabinet, all of which are located within the second installation area.

[0013] Preferably, the skid-mounted container is provided with a first cabinet door and a second cabinet door at positions corresponding to the first installation area and the second installation area, respectively.

[0014] The alkaline water electrolysis hydrogen production skid-mounted equipment provided by this utility model has at least the following beneficial effects: I. Significantly optimize space utilization and break through the limitations of application scenarios. The equipment integrates the electrolysis reactor, separation and purification unit, and electrical control unit into a single skid-mounted container, with each core component arranged in an orderly manner through independent first and second installation areas. Compared to the existing method of dispersing and installing independent single units, there is no need to reserve separate space for each unit; only the overall placement requirements of the skid-mounted container need to be met, fundamentally reducing the footprint of the entire system. This design allows the equipment to flexibly adapt to space-constrained scenarios such as corner areas of industrial parks, distributed hydrogen production sites, and temporary hydrogen refueling locations, effectively breaking through the application limitations of existing devices due to their large footprint and expanding the applicability of alkaline water electrolysis hydrogen production technology. II. Significantly improve system integration and optimize installation and operational stability. On the one hand, the electrolysis reactor and separation and purification unit are centrally located in the first installation area, while the electrical control unit is independently located in the second installation area. All components are pre-installed and connected to internal piping and circuits within the skid-mounted container before leaving the factory. Users do not need to install and connect individual devices on-site; they only need to position the skid-mounted container and connect external water and electricity interfaces to put the equipment into operation. This significantly simplifies the installation process, shortens the installation cycle, and reduces on-site installation manpower and time costs. On the other hand, the zoned integrated design reduces the large number of on-site connection interfaces found in existing equipment, reducing the risk of hydrogen leakage and alkali leakage caused by poor interface sealing. Simultaneously, the skid-mounted container provides unified structural protection for all internal components, effectively isolating them from external vibrations, temperature fluctuations, and other interference factors. This ensures that the electrolysis reactor, separation and purification unit, and electrical control unit are always in a coordinated and stable operating state, improving the safety and reliability of the equipment operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the skid-mounted container of this utility model; Figure 3 This is a schematic diagram of the electrolytic reactor and separation and purification device installed in the first installation area according to this utility model; Figure 4 This is a schematic diagram of the electrolytic reactor and separation and purification device of this utility model from one perspective; Figure 5 This is a schematic diagram of the electrolytic reactor and separation and purification device of this utility model from another perspective; Figure 6 This is a schematic diagram of the structure of the electrical control device of this utility model installed in the second installation area.

[0017] Figure Labels 1. Skid-mounted container; 2. Electrolysis reactor; 3. Separation and purification unit; 31. Skid-mounted integrated frame; 32. Alkali removal tank; 33. Alkali removal pump; 34. Cathode alkali circulation pump; 35. Cathode alkali filter; 36. Cathode alkali separation heat exchanger; 37. Cathode alkali heat exchanger; 38. Alkali preparation tank; 39. Make-up pump; 310. Anode alkali circulation pump; 311. Anode alkali filter; 312. Anode alkali separation heat exchanger; 313. Anode alkali heat exchanger; 314. Purification unit; 4. Electrical control unit; 41. Electrical control cabinet; 42. Power supply cabinet; 43. PLC control cabinet. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: This utility model provides a skid-mounted device for alkaline water electrolysis to produce hydrogen, see reference. Figures 1 to 6 As shown, the alkaline water electrolysis hydrogen production skid-mounted equipment includes a skid-mounted container 1, an electrolysis reactor 2, a separation and purification device 3, and an electrical control device 4.

[0020] The skid-mounted container 1 has a first installation area and a second installation area, which are independent of each other; the electrolysis reactor 2 and the separation and purification device 3 are both located in the first installation area, and the electrical control device 4 is located in the second installation area.

[0021] This invention integrates an electrolysis reactor, a separation and purification device, and an electrical control device into a single unit using a skid-mounted container with a first installation area and a second installation area. This achieves an orderly layout of the core components. Compared to existing dispersed hydrogen production equipment, this invention fundamentally reduces the footprint of the entire unit, significantly optimizes space utilization, and is suitable for various application scenarios. Furthermore, its high integration means that during equipment commissioning, only the overall positioning of the skid-mounted container and simple connection of external pipeline interfaces are required, greatly simplifying the installation process, shortening the installation cycle, and reducing the manpower and time costs of on-site installation.

[0022] Example 2: Example 2 is based on Example 1: like Figures 1 to 6As shown, the separation and purification device 3 includes a skid-mounted integrated frame 31, a cathode separation device, an anode separation device, and a purification device 314. The skid-mounted integrated frame 31 has an overall frame structure and is fixedly installed in the first installation area. The cathode separation device, the anode separation device, and the purification device 314 are all installed on the skid-mounted integrated frame 31.

[0023] On the one hand, the skid-mounted integrated frame 31 provides a unified installation carrier for the cathode separation device, the anode separation device, and the purification device 314, integrating previously independent and dispersed components into a modular unit. This not only simplifies the positioning and fixing process of the separation and purification device 3 in the first installation area and reduces installation deviations between components, but also reduces the complexity of on-site pipeline connections. On the other hand, the modular integrated structure makes the overall transportation and maintenance of the separation and purification device 3 more convenient. If maintenance or replacement of separation and purification-related components is required in the future, the frame can be used to quickly locate the component positions without having to check the dispersed parts one by one, improving equipment operation and maintenance efficiency. It also enhances the stability of the separation and purification system and avoids affecting the hydrogen separation and purification effect due to component loosening or displacement.

[0024] As an optional implementation, the cathode separation device includes a cathode alkali circulation pump 34, a cathode alkali filter 35, a cathode alkali heat exchanger 37, and a cathode alkali separation heat exchanger 36. The cathode alkali circulation pump 34, the cathode alkali filter 35, the cathode alkali heat exchanger 37, and the cathode alkali separation heat exchanger 36 are cyclically connected. The cathode alkali separation heat exchanger 36 is connected to a hydrogen gas connecting pipe, and the hydrogen gas outlet pipe is connected to a purification device 314. The purification device 314 is connected to a hydrogen gas outlet pipe.

[0025] The cathode alkali circulation pump 34, cathode alkali filter 35, cathode alkali heat exchanger 37, and cathode alkali separation heat exchanger 36 work together to form a cathode alkali treatment circuit, which can efficiently circulate, filter, and exchange heat on the cathode side of the alkali, remove impurities from the alkali, avoid the accumulation of impurities affecting the electrolysis efficiency, and stabilize the alkali temperature through heat exchange to ensure that the electrolysis reaction takes place in a suitable temperature environment.

[0026] As an optional implementation, the anode separation device includes an anode alkali circulation pump 310, an anode alkali filter 311, an anode alkali heat exchanger 313, and an anode alkali separation heat exchanger 312, which are cyclically connected. The anode alkali separation heat exchanger 312 is connected to an oxygen outlet pipe.

[0027] The anolyte circulation pump 310, anolyte filter 311, anolyte heat exchanger 313, and anolyte separation heat exchanger 312 work together to form an anolyte treatment circuit, which can efficiently circulate the anolyte on the anode side, remove impurities from the anolyte by filtration to prevent impurities from adhering to the electrode surface and affecting the electrolysis reaction, and regulate the temperature of the anolyte by heat exchange, thereby ensuring that the anolyte electrolysis reaction is carried out in a suitable temperature environment.

[0028] Specifically, the cathode alkali heat exchanger 37, the cathode alkali separation heat exchanger 36, the anode alkali heat exchanger 313, and the anode alkali separation heat exchanger 312 are all vertical equipment. This configuration eliminates the need for traditional cathode and cation separators, hydrogen coolers, and oxygen coolers, further reducing the equipment footprint and improving integration while ensuring heat exchange and separation effects.

[0029] As an optional implementation, the skid-mounted integrated frame 31 is configured as a hierarchical structure, including an upper support and a lower support. The cathode alkali circulation pump 34 and the anode alkali circulation pump 310 are both mounted on the lower support, and the cathode alkali filter 35 and the anode alkali filter 311 are both mounted on the lower support. The upper section of the cathode alkali separation heat exchanger 36, the upper section of the cathode alkali heat exchanger 37, the upper section of the anode alkali separation heat exchanger 312, the upper section of the anode alkali heat exchanger 313, and the purification device 314 are all mounted on the upper support.

[0030] From the perspective of space utilization, the hierarchical structure makes full use of the vertical space of the skid-mounted integrated frame 31, placing the heavier and relatively regular-sized circulation pump in the lower support layer. This not only lowers the center of gravity of the frame and improves the overall structural stability, but also reserves sufficient space for the installation of functional components such as heat exchangers, filters, and purification devices in the upper layer, avoiding the waste of space caused by stacking components on the same plane.

[0031] From an operation and maintenance perspective, the upper-level components (such as heat exchangers and purification devices) are at a height that is more easily accessible to operators. During subsequent inspections and maintenance, there is no need to frequently bend over or move the lower-level pumps. The independent placement of the lower-level pumps also reduces interference with the upper-level components. At the same time, the clear hierarchical layout facilitates quick identification of the location of each component, improving the convenience and safety of equipment maintenance.

[0032] As an optional implementation, the separation and purification device 3 includes an alkali preparation device, which includes an alkali preparation tank 38 and a replenishment pump 39. The cathode separation device and the anode separation device are connected to the outlet of the alkali preparation tank 38 through a liquid preparation pipeline. Specifically, the cathode alkali solution separation heat exchanger 36 and the anode alkali solution separation heat exchanger 312 are both connected to the alkali preparation tank 38 through a liquid preparation pipeline. A replenishment pipe is connected to the replenishment end of the alkali preparation tank 38, and the replenishment pump 39 is installed on the replenishment pipe.

[0033] The alkali preparation tank 38 and the replenishment pump 39 work together to eliminate the need for external alkali preparation auxiliary facilities. The alkali can be replenished through the liquid preparation pipeline, thereby maintaining the stability of the alkali in the unit and ensuring the electrolytic separation effect.

[0034] As an optional implementation, the separation and purification device 3 includes an alkali removal device, which includes an alkali removal tank 32 and an alkali removal pump 33. The cathode separation device and the anode separation device are connected to the inlet end of the alkali removal tank 32 through a liquid return pipeline. Specifically, the cathode alkali circulation pump 34 and the anode alkali circulation pump 310 are both connected to liquid return pipelines. The outlet end of the alkali removal tank 32 is connected to an outlet pipe, and the alkali removal pump 33 is installed on the outlet pipe. When the equipment is stopped or the alkali solution needs to be replaced, the alkali removal pump 33 is started to discharge the alkali solution in the alkali removal tank 32.

[0035] The alkali removal tank 32 and the alkali removal pump 33 work together without the need for external alkali removal auxiliary facilities. The alkali solution can be discharged through the outlet pipe, which facilitates equipment maintenance and alkali solution replacement.

[0036] As an optional implementation, the skid-mounted container 1 includes a container body, and a vertical partition is provided inside the container body, which divides the inner cavity of the container body into a first installation area and a second installation area.

[0037] The two independent installation areas make the functional allocation area clearer, avoid mutual interference between devices in different functional areas, and ensure the safety of the overall equipment.

[0038] As an optional implementation, the electrical control device 4 includes an electrical control cabinet 41, a power supply cabinet 42, and a PLC control cabinet 43, all of which are located in the second installation area.

[0039] The electrical control cabinet 41, power supply cabinet 42, and PLC control cabinet 43 are concentrated in the second installation area to form a unified electrical control center. The centralized electrical control equipment facilitates unified monitoring and operation by operators.

[0040] Electrical control cabinet 41, power supply cabinet 42, and PLC control cabinet 43 are all existing technologies and will not be described in detail.

[0041] As an optional implementation, the skid-mounted container 1 is provided with a first cabinet door and a second cabinet door at the positions corresponding to the first installation area and the second installation area, respectively; the cabinet doors are arranged in sections to facilitate independent maintenance of the devices in each area.

[0042] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A skid-mounted alkaline water electrolysis hydrogen production device, characterized in that, Includes skid-mounted containers, electrolytic reactors, separation and purification units, and electrical control devices, among which: The skid-mounted container is equipped with a first installation area and a second installation area that are independent of each other. The electrolysis reactor and the separation and purification device are both located in the first installation area, and the electrical control device is located in the second installation area.

2. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 1, characterized in that, The separation and purification device includes a skid-mounted integrated frame, a cathode separation device, an anode separation device, and a purification device, wherein: The skid-mounted integrated frame is fixedly installed within the first installation area; The cathode separation device, the anode separation device, and the purification device are all mounted on the skid-mounted integrated frame.

3. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 2, characterized in that, The cathode separation device includes a cathode alkali circulation pump, a cathode alkali filter, a cathode alkali heat exchanger, and a cathode alkali separation heat exchanger, wherein: The cathode alkali circulating pump, cathode alkali filter, cathode alkali heat exchanger and cathode alkali separation heat exchanger are circulated together. The cathode alkali separation heat exchanger is connected to a hydrogen connecting pipe, which is connected to the purification device. The purification device is connected to a hydrogen outlet pipe.

4. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 3, characterized in that, The anode separation device includes an anode alkali circulation pump, an anode alkali filter, an anode alkali heat exchanger, and an anode alkali separation heat exchanger, wherein: The anolyte circulating pump, the anolyte filter, the anolyte heat exchanger, and the anolyte separation heat exchanger are connected in a loop, and the anolyte separation heat exchanger is connected to an oxygen outlet pipe.

5. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 4, characterized in that, The skid-mounted integrated frame is configured as a hierarchical structure, including an upper support and a lower support, wherein: The cathode alkali circulation pump, the cathode alkali filter, the anode alkali circulation pump, and the anode alkali filter are all mounted on the lower support. The cathode alkali solution separation heat exchanger, the cathode alkali solution heat exchanger, the anode alkali solution separation heat exchanger, the anode alkali solution heat exchanger, and the purification device are all mounted on the upper support.

6. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 3, characterized in that, The separation and purification device includes an alkali preparation device, which includes an alkali preparation tank and a replenishment pump, wherein: The cathode separation device and the anode separation device are connected to the outlet end of the alkali mixing tank via a liquid distribution pipeline; The alkali mixing tank is connected to a replenishment pipe at its replenishment end, and the replenishment pump is mounted on the replenishment pipe.

7. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 5, characterized in that, The separation and purification device includes an alkali removal device, which comprises an alkali removal tank and an alkali removal pump, wherein: The cathode separation device and the anode separation device are connected to the inlet of the alkali removal tank via a liquid return pipeline; The outlet end of the alkali removal tank is connected to an outlet pipe, and the alkali removal pump is installed on the outlet pipe.

8. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 1, characterized in that, The skid-mounted container includes a container body, and a vertical partition is provided inside the container body, which divides the inner cavity of the container body into a first installation area and a second installation area.

9. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 1, characterized in that, The electrical control device includes an electrical control cabinet, a power supply cabinet, and a PLC control cabinet, all of which are located in the second installation area.

10. The alkaline water electrolysis hydrogen production skid-mounted equipment according to claim 1, characterized in that, The skid-mounted container is provided with a first cabinet door and a second cabinet door at positions corresponding to the first installation area and the second installation area, respectively.

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