Small electrolytic separation device

Abstract

The utility model discloses a small-sized electrolytic separation device which comprises a main body frame and an electrolytic bath, an electrolytic platform is arranged in the main body frame, the electrolytic bath is placed on the electrolytic platform, and a cathode side liquid inlet header pipe, a cathode side liquid outlet header pipe, an anode side liquid inlet header pipe and an anode side liquid outlet header pipe are arranged on two sides of the electrolytic platform. The cathode side liquid outlet header pipe and the anode side liquid outlet header pipe are respectively connected with corresponding separation pipes, gas outlet pipes are arranged at the tops of the separation pipes, the bottoms of the two separation pipes are connected with a confluence header pipe, a first magnetic pump and a second magnetic pump are arranged on the confluence header pipe, the first magnetic pump is further connected with an alkali liquor tank and a pure water tank, and the second magnetic pump is further connected with a water tank. The second magnetic pump is also connected with a liquid outlet pipe; and the liquid outlet pipe is connected with a cathode side liquid inlet header pipe and an anode side liquid inlet header pipe. The device is of an integrated structure, has the advantages of being small in occupied area, movable and the like, and meets test requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of water electrolysis, in particular to a small electrolysis separation device. Background Art

[0002] Alkaline water electrolysis is a hydrogen production technology that has been successfully applied on a large scale in commercial applications, and the alkaline electrolyzer is the core equipment. At present, the alkaline electrolyzer is developing towards large-scale production. The largest single alkaline electrolyzer in China has a production capacity of 3000Nm 3 / h.

[0003] However, the development of miniaturization of electrolyzers has not received enough attention. There are few small-scale electrolyzer hydrogen production products launched in China. In university or company laboratories, home residences, small fleets and other fields, small-scale electrolyzers have greater application scenarios and development potential. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a small electrolytic separation device which is an integrated structure and has the advantages of small footprint and portability to meet test requirements.

[0005] In order to solve the above technical problems, the utility model provides a small electrolytic separation device, including a main frame and an electrolytic cell, wherein an electrolytic platform is arranged in the main frame, and the electrolytic cell is placed on the electrolytic platform, and cathode side liquid inlet main pipe, cathode side liquid outlet main pipe, anode side liquid inlet main pipe and anode side liquid outlet main pipe are arranged on both sides of the electrolytic platform, the cathode side liquid outlet main pipe and the anode side liquid outlet main pipe are respectively connected to the corresponding separation tubes, an air outlet pipe is arranged on the top of the separation tube, and the bottoms of the two separation tubes are connected to the confluence main pipe, and a first magnetic pump and a second magnetic pump are arranged on the confluence main pipe, the first magnetic pump is also connected to the alkali liquid tank and the pure water tank, the second magnetic pump is also connected to the liquid outlet pipe, and the liquid outlet pipe is connected to the cathode side liquid inlet main pipe and the anode side liquid inlet main pipe.

[0006] Furthermore, the electrolytic cell comprises a bottom plate, on which two mounting vertical plates are arranged opposite to each other, a plurality of electrolysis chambers are arranged between the two mounting vertical plates, and a tightening bolt is arranged on one of the mounting vertical plates.

[0007] Furthermore, two hanging rods are arranged on the top of the two mounting vertical plates, and hooks are arranged on the cathode chamber and the anode chamber of the electrolysis chamber. The cathode chamber is arranged on one of the hanging rods through the hooks, and the anode chamber is arranged on the other hanging rod through the hooks.

[0008] Furthermore, the liquid inlet of the cathode chamber and the cathode side liquid inlet main pipe, as well as the liquid outlet of the cathode chamber and the cathode side liquid outlet main pipe are connected by a hose plug-in connection, and the liquid inlet of the anode chamber and the anode side liquid inlet main pipe, as well as the liquid outlet of the anode chamber and the anode side liquid outlet main pipe are connected by a hose plug-in connection.

[0009] Furthermore, the air outlet pipe is connected to a pressure gauge and a cooler.

[0010] Furthermore, a heater is provided on the liquid outlet pipe.

[0011] Furthermore, control valves and float flowmeters are provided between the heater and the cathode-side liquid inlet main pipe and between the heater and the anode-side liquid inlet main pipe.

[0012] Furthermore, a magnetic flap level gauge is provided on the separation tube.

[0013] Furthermore, an installation platform is provided at the lower part of the main frame, the first magnetic pump, the second magnetic pump, the alkali liquid tank and the pure water tank are all arranged on the installation platform, a brake wheel is provided at the bottom of the main frame, and a mounting frame is provided inside the main frame, and the cathode side liquid inlet main pipe, the cathode side liquid outlet main pipe, the anode side liquid inlet main pipe, the anode side liquid outlet main pipe and the separation tube are all connected to the mounting frame through clamps.

[0014] Beneficial effects of the utility model:

[0015] 1. By integrating all components into the main frame, the overall structure is compact, occupies a small area and is easy to move;

[0016] 2. The first magnetic pump and the second magnetic pump cooperate to achieve the effect of taking liquid and circulating liquid, which is convenient to operate, and the setting of the separation tube makes the recycling rate of alkali liquid high;

[0017] 3. The electrolytic cell can be directly removed from the electrolysis platform. The disassembly is convenient and reliable. It is easy to replace electrolytic chambers, diaphragm materials and electrode materials of different structures, which can meet the research needs of university or company laboratories. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first perspective;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0020] Figure 3 It is a schematic diagram of the electrolytic cell structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the pipeline connection of the confluence main pipe of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] Reference Figures 1 to 3 As shown, an embodiment of the small electrolytic separation device of the utility model comprises a main frame 1 and an electrolytic cell 2, an electrolytic platform 3 is arranged in the main frame, the electrolytic cell is placed on the electrolytic platform, cathode side liquid inlet main pipe 4, cathode side liquid outlet main pipe 5, anode side liquid inlet main pipe 6 and anode side liquid outlet main pipe 7 are arranged on both sides of the electrolytic platform, the cathode side liquid outlet main pipe and the anode side liquid outlet main pipe are respectively connected to the corresponding separation pipe 8, an air outlet pipe 9 is arranged on the top of the separation pipe, the bottoms of the two separation pipes are connected to the confluence main pipe 10, a first magnetic pump 11 and a second magnetic pump 12 are arranged on the confluence main pipe, the first magnetic pump is also connected to the alkali liquid tank 13 and the pure water tank 14, the second magnetic pump is also connected to the liquid outlet pipe 15, and the liquid outlet pipe is connected to the cathode side liquid inlet main pipe and the anode side liquid inlet main pipe.

[0024] During use, the function of the first magnetic pump is to extract the alkali liquid from the alkali liquid tank into the confluence main pipe, and the function of the second magnetic pump is to provide power for the alkali liquid, and to send the alkali liquid in the confluence main pipe to the entire device and circulate it. Specifically, it enters from the liquid outlet pipe and is diverted to the cathode side liquid inlet main pipe and the anode side liquid inlet main pipe, and then is diverted to each electrolysis chamber of the electrolytic cell through the cathode side liquid inlet main pipe and the anode side liquid inlet main pipe. After the electrolysis is completed, the gas and liquid of each electrolysis chamber are discharged from the corresponding cathode side liquid outlet main pipe and the anode side liquid outlet main pipe, and enter the corresponding separation tube. Taking hydrogen as an example, the hydrogen and alkali liquid are separated in the separation tube. Due to the different densities of hydrogen and alkali liquid, hydrogen flows upward and is discharged from the gas outlet pipe, and the alkali liquid flows downward and enters the confluence main pipe, and is supplied to the liquid outlet pipe again by the second magnetic pump to realize the recycling of the alkali liquid.

[0025] When the alkali solution is consumed, the alkali solution can continue to be injected into the confluence main pipe through the first magnetic pump; when the alkali solution concentration becomes high, the first magnetic pump can inject water in the pure water tank into the confluence main pipe to ensure that the concentration of the alkali solution for electrolysis is within an appropriate range; when the electrolysis is completed, the first magnetic pump can also reversely pump the alkali solution in the pipeline back into the alkali solution tank; after the electrolysis is completed, the first magnetic pump can also pump water in the pure water tank into the confluence main pipe, and use the second magnetic pump to flush the entire pipeline and the inside of the electrolytic cell with pure water to reduce alkali solution corrosion.

[0026] In the above-mentioned first magnetic pump and second magnetic pump connecting pipeline, refer to Figure 4As shown, the first liquid inlet pipeline 111 of the first magnetic pump is connected to the alkali liquid tank and the pure water tank, and on-off valves are arranged between them. The corresponding on-off valves are opened as needed, and the corresponding liquid is injected into the confluence main pipe through the first liquid outlet pipeline 112 to ensure the alkali liquid concentration, liquid replenishment and cleaning needs during the electrolysis process. The second liquid inlet pipeline 113 of the second magnetic pump is connected to the confluence main pipe, and the liquid in the confluence main pipe is pumped into the liquid outlet pipe through the second liquid outlet pipeline 114 to provide liquid flow power.

[0027] The electrolytic cell comprises a bottom plate 16, on which two mounting vertical plates 17 are arranged relatively, and a plurality of electrolytic cells 18 are arranged between the two mounting vertical plates, wherein a fastening bolt 19 is arranged on one of the mounting vertical plates, and two hanging rods 20 are arranged on the top of the two mounting vertical plates, and hooks 21 are arranged on the cathode chamber and the anode chamber of the electrolytic cell, wherein the cathode chamber is arranged on one of the hanging rods through the hook, and the anode chamber is arranged on the other hanging rod through the hook, and after the assembly of the plurality of electrolytic cells is completed, the whole is squeezed on another mounting vertical plate through the fastening bolts to achieve fixation, simple operation, and convenient separation, and the cathode chamber and the anode chamber of the electrolytic cell can be disassembled and replaced by loosening the abutment bolts, and during the assembly process of the cathode chamber and the anode chamber of the electrolytic cell, the cathode chamber and the anode chamber are both mounted on the hanging rod, and the assembly and disassembly difficulty is low. The hanging rod and the two mounting vertical plates are locked by nuts to form a frame structure, and the push pressure of the fastening bolts can be released into the entire frame structure, and the overall structural strength is high.

[0028] The liquid inlet of the cathode chamber and the cathode side liquid inlet main pipe, as well as the liquid outlet of the cathode chamber and the cathode side liquid outlet main pipe are connected by a hose 22, and the liquid inlet of the anode chamber and the anode side liquid inlet main pipe, as well as the liquid outlet of the anode chamber and the anode side liquid outlet main pipe are connected by a hose. The hose plug-in method can facilitate the disassembly of the pipeline and reduce the difficulty of disassembly and assembly of the electrolytic cell, that is, it is convenient to replace electrolytic chambers of different structures and diaphragms and electrodes of different materials, etc., which is of great significance for experimental research.

[0029] The gas outlet pipe is provided with a pressure gauge 23 and a cooler 24. Hydrogen and oxygen flow upward, are cooled by the corresponding coolers, and then discharged. The pressure gauge is used to monitor the pressure of hydrogen and oxygen. A heater 25 is also provided on the liquid outlet pipe to ensure that the temperature of the alkali solution during electrolysis is within the test requirements.

[0030] A control valve 26 and a float flowmeter 27 are provided between the heater and the cathode side liquid inlet main pipe and between the heater and the anode side liquid inlet main pipe. By adjusting the opening of the control valve and observing the specific value with the float flowmeter, it is ensured that the alkali liquid flow rate of the anode and cathode chambers is roughly equal. A magnetic flap level gauge 28 is provided on the separation tube, which can visually see the liquid level in the separation tube as a means of monitoring the liquid level, that is, monitoring the liquid level of the alkali liquid in the hydrogen side separation tube and the liquid level of the alkali liquid in the oxygen side separation tube.

[0031] In the arrangement of the entire main frame, the liquid flowing out of the electrolytic cell needs to be separated into gas and liquid, so it is arranged in the upper part, while some heavier parts are suitable for being arranged in the lower part. Therefore, an installation platform 29 is arranged at the lower part of the main frame, and the first magnetic pump, the second magnetic pump, the alkali liquid tank and the pure water tank are all arranged on the installation platform, so that the center of gravity of the device is located at the lower part, which is more stable and meets the pipeline flow requirements, reducing the length of the pipeline layout. A brake wheel 30 is also arranged at the bottom of the main frame to facilitate the movement of the position; a mounting frame 31 is arranged in the main frame, and the cathode side liquid inlet main pipe, the cathode side liquid outlet main pipe, the anode side liquid inlet main pipe, the anode side liquid outlet main pipe and the separation pipe are all connected to the mounting frame through a clamp block, and the fixation is simple and reliable.

[0032] The above-mentioned main frame is assembled by stainless steel square tubes, stainless steel thin plates and brake wheels, with an aspect ratio of 1 and a height ratio of 2.2-3. The overall structure is a cube, which has a small footprint and is movable, which is conducive to use in limited space and is also convenient for storage.

[0033] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A small electrolytic separation device, characterized in that: It comprises a main frame and an electrolytic cell, wherein an electrolytic platform is arranged in the main frame, and the electrolytic cell is placed on the electrolytic platform, and cathode side liquid inlet main pipe, cathode side liquid outlet main pipe, anode side liquid inlet main pipe and anode side liquid outlet main pipe are arranged on both sides of the electrolytic platform, the cathode side liquid outlet main pipe and the anode side liquid outlet main pipe are respectively connected to corresponding separation pipes, an air outlet pipe is arranged on the top of the separation pipe, and the bottoms of the two separation pipes are connected to the confluence main pipe, and a first magnetic pump and a second magnetic pump are arranged on the confluence main pipe, the first magnetic pump is also connected to the alkali liquid tank and the pure water tank, the second magnetic pump is also connected to the liquid outlet pipe, and the liquid outlet pipe is connected to the cathode side liquid inlet main pipe and the anode side liquid inlet main pipe.

2. The small electrolytic separation device according to claim 1, characterized in that: The electrolytic cell comprises a bottom plate, on which two mounting vertical plates are arranged opposite to each other, a plurality of electrolysis chambers are arranged between the two mounting vertical plates, and a tightening bolt is arranged on one of the mounting vertical plates.

3. The small electrolytic separation device according to claim 2, characterized in that: Two hanging rods are arranged on the top of the two mounting vertical plates, and hooks are arranged on the cathode chamber and the anode chamber of the electrolysis chamber. The cathode chamber is arranged on one of the hanging rods through the hooks, and the anode chamber is arranged on the other hanging rod through the hooks.

4. The small electrolytic separation device according to claim 3, characterized in that: The liquid inlet of the cathode chamber and the cathode side liquid inlet main pipe, as well as the liquid outlet of the cathode chamber and the cathode side liquid outlet main pipe are connected by a hose plug-in connection, and the liquid inlet of the anode chamber and the anode side liquid inlet main pipe, as well as the liquid outlet of the anode chamber and the anode side liquid outlet main pipe are connected by a hose plug-in connection.

5. The small electrolytic separation device according to claim 1, characterized in that: The air outlet pipe is connected with a pressure gauge and a cooler.

6. The small electrolytic separation device according to claim 1, characterized in that: The liquid outlet pipe is provided with a heater.

7. The small electrolytic separation device according to claim 6, characterized in that: A control valve and a float flowmeter are arranged between the heater and the cathode side liquid inlet main pipe and between the heater and the anode side liquid inlet main pipe.

8. The small electrolytic separation device according to claim 1, characterized in that: The separation tube is provided with a magnetic flap liquid level gauge.

9. The small electrolytic separation device according to claim 1, characterized in that: An installation platform is arranged at the lower part of the main frame, the first magnetic pump, the second magnetic pump, the alkali liquid tank and the pure water tank are all arranged on the installation platform, a brake wheel is arranged at the bottom of the main frame, and an installation frame is arranged inside the main frame, and the cathode side liquid inlet main pipe, the cathode side liquid outlet main pipe, the anode side liquid inlet main pipe, the anode side liquid outlet main pipe and the separation pipe are all connected to the installation frame through clamps.

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