AEM and PEM electrolytic cell composite test bench

Abstract

The invention relates to an AEM and PEM electrolytic cell composite test bench, which comprises a deionized water supply unit and an alkali liquor supply unit. The device has the functions of deionized water supply and alkali liquor supply, an AEM electrolytic bath alkali liquor test and a PEM / AEM electrolytic bath deionized water test can be completed, and the composite test of an AEM electrolytic bath and a PEM electrolytic bath is met.

Description

Technical Field

[0001] The present invention relates to the field of electrolyzer testing, and particularly to a composite test bench for AEM and PEM electrolyzers. Background Art

[0002] With the rapid development of the hydrogen energy industry, the types of electrolyzers on the market are mainly divided into AEM, PEM, and PEM electrolyzers. At present, in the existing technology, there are specific test methods for different electrolyzers. Among them, AEM and PEM require bilateral independent liquid supply and bilateral pressure difference testing, PEM only needs to be tested under the liquid supply condition of pure water, while AEM needs to be tested under the liquid supply condition of pure water or alkaline solution. How to realize the testing of AEM and PEM electrolyzers on one test device is a difficult point in the current electrolyzer testing. Summary of the Invention

[0003] The object of the present invention is to provide a composite test bench for AEM and PEM electrolyzers.

[0004] The present invention realizes the above object through the following technical solutions: A composite test bench for AEM and PEM electrolyzers, including a deionized water supply unit and an alkaline solution supply unit;

[0005] The deionized water supply unit includes an anode deionized water supply switch valve, an anode deionized water circulation pump, an anode deionized water flowmeter, an anode deionized water inlet tank check valve, an anode deionized water inlet tank switch valve, an electrolyzer, an anode deionized water outlet tank switch valve, and an anode deionized water gas-liquid separation tank, which are arranged in sequence according to the deionized water circulation flow direction. The anode deionized water gas-liquid separation tank has two outlets. One outlet returns to the anode deionized water supply switch valve, and the other outlet flows through the anode deionized water gas-liquid separation tank oxygen outlet switch valve to the anode back pressure control valve;

[0006] The alkaline solution supply unit includes an anode alkaline solution supply switch valve, an anode alkaline solution circulation pump, an anode alkaline solution flowmeter, an anode alkaline solution inlet tank check valve, an anode alkaline solution inlet tank switch valve, an electrolyzer, an anode alkaline solution outlet tank switch valve, and an anode alkaline solution gas-liquid separation tank, which are arranged in sequence according to the alkaline solution circulation flow direction. The anode alkaline solution gas-liquid separation tank has two outlets. One outlet returns to the anode alkaline solution supply switch valve, and the other outlet flows through the anode alkaline solution gas-liquid separation tank oxygen outlet switch valve to the anode back pressure control valve.

[0007] Further, the electrolyzer is shared by the deionized water supply unit and the alkaline solution supply unit.

[0008] Further, the anode back pressure control valve is shared by the deionized water supply unit and the alkaline solution supply unit.

[0009] Further, the electrolyzer is also connected to a cathode gas-liquid separation tank.

[0010] Further, the cathode gas-liquid separation tank is connected with a cathode back pressure control valve.

[0011] Compared with the prior art, the beneficial effects of the AEM and PEM electrolyzer composite test bench of the present invention are as follows: The present invention has the functions of deionized water supply and alkali solution supply, can complete the alkali solution test of the AEM electrolyzer and the deionized water test of the PEM / AEM electrolyzer, and meets the composite test of the AEM electrolyzer and the PEM electrolyzer. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present invention.

[0013] The reference numerals in the drawings are as follows:

[0014] 1. Anode deionized water supply switch valve, 2. Anode deionized water circulation pump, 3. Anode deionized water flowmeter, 4. Anode deionized water inlet tank check valve, 5. Anode deionized water inlet tank switch valve, 6. Anode deionized water outlet tank switch valve, 7. Anode deionized water gas-liquid separation tank, 8. Anode deionized water gas-liquid separation tank oxygen outlet switch valve, 9. Anode alkali solution supply switch valve, 10. Anode alkali solution circulation pump, 11. Anode alkali solution flowmeter, 12. Anode alkali solution inlet tank check valve, 13. Anode alkali solution inlet tank switch valve, 14. Electrolyzer, 15. Anode alkali solution outlet tank switch valve, 16. Anode alkali solution gas-liquid separation tank, 17. Anode alkali solution gas-liquid separation tank oxygen outlet switch valve, 18. Anode back pressure control valve, 19. Cathode gas-liquid separation tank, 20. Cathode back pressure control valve. Detailed Embodiments

[0015] Embodiment

[0016] Term introduction: The anode represents the oxygen side, and the cathode represents the hydrogen side.

[0017] An AEM and PEM electrolyzer composite test bench includes a deionized water supply unit and an alkali solution supply unit.

[0018] Among them, the deionized water supply unit includes an anode deionized water supply switch valve 1, an anode deionized water circulation pump 2, an anode deionized water flowmeter 3, an anode deionized water inlet tank check valve 4, an anode deionized water inlet tank switch valve 5, an electrolyzer 14, an anode deionized water outlet tank switch valve 6, and an anode deionized water gas-liquid separation tank 7 arranged in sequence according to the deionized water circulation flow direction. The anode deionized water gas-liquid separation tank 7 has two outlets. One outlet returns to the anode deionized water supply switch valve 1, and the other outlet flows through the anode deionized water gas-liquid separation tank oxygen outlet switch valve 8 to the anode back pressure control valve 18.

[0019] The lye supply unit includes an anodic lye supply on-off valve 9, an anodic lye circulation pump 10, an anodic lye flowmeter 11, an anodic lye check valve for entering the cell 12, an anodic lye on-off valve for entering the cell 13, an electrolytic cell 14, an anodic lye on-off valve for leaving the cell 15, and an anodic lye gas-liquid separation tank 16, which are arranged in sequence according to the lye circulation flow direction. The anodic lye gas-liquid separation tank 16 has two outlets. One outlet returns to the anodic lye supply on-off valve 9, and the other outlet flows through the oxygen outlet on-off valve 8 of the anodic lye gas-liquid separation tank to the anodic back pressure control valve 18.

[0020] The electrolytic cell 14 is shared by the deionized water supply unit and the lye supply unit. The anodic back pressure control valve 18 is shared by the deionized water supply unit and the lye supply unit.

[0021] The electrolytic cell 14 is also connected to a cathodic gas-liquid separation tank 19, and the cathodic gas-liquid separation tank 19 is connected to a cathodic back pressure control valve.

[0022] The test method is as follows:

[0023] 1. AEM electrolytic cell lye test: The AEM electrolytic cell can work with low-concentration lye as the electrolyte. At this time, the anodic deionized water supply on-off valve 1, the anodic deionized water on-off valve for entering the cell 5, the anodic deionized water on-off valve for leaving the cell 6, and the oxygen outlet on-off valve 8 of the anodic deionized water gas-liquid separation tank are closed, and the anodic deionized water circulation pump 2 is not started. The anodic lye supply on-off valve 9, the anodic lye on-off valve for entering the cell 13, the anodic lye on-off valve for leaving the cell 15, and the oxygen outlet on-off valve 17 of the anodic lye gas-liquid separation tank are opened. The low-concentration lye realizes lye supply through the operation of the anodic lye circulation pump 10, and the flow rate is adjusted through the feedback of the anodic lye flowmeter 11. High and low pressure tests can be carried out through the anodic back pressure control valve 18.

[0024] 2. PEM / AEM electrolytic cell deionized water test: The PEM electrolytic cell and the AEM electrolytic cell can work with deionized water as the electrolyte. At this time, the anodic lye supply on-off valve 9, the anodic lye on-off valve for entering the cell 13, the anodic lye on-off valve for leaving the cell 15, and the oxygen outlet on-off valve 17 of the anodic lye gas-liquid separation tank are closed, and the anodic lye circulation pump 10 is not started. The anodic deionized water supply on-off valve 1, the anodic deionized water on-off valve for entering the cell 5, the anodic deionized water on-off valve for leaving the cell 6, and the oxygen outlet on-off valve 8 of the anodic deionized water gas-liquid separation tank are opened. The deionized water realizes water supply through the operation of the anodic deionized water circulation pump 2, and the flow rate is adjusted through the feedback of the anodic deionized water flowmeter 3. High and low pressure tests can be carried out through the anodic back pressure control valve 18.

[0025] The present invention has the functions of deionized water supply and lye supply, can complete the AEM electrolytic cell lye test and the PEM / AEM electrolytic cell deionized water test, and meets the composite test of the AEM electrolytic cell and the PEM electrolytic cell.

[0026] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A composite test bench for AEM and PEM electrolyzers, characterized in that: It includes a deionized water supply unit and an alkali solution supply unit; The deionized water supply unit comprises an anode deionized water supply switch valve, an anode deionized water circulation pump, an anode deionized water flow meter, an anode deionized water inlet check valve, an anode deionized water inlet switch valve, an electrolytic cell, an anode deionized water outlet switch valve and an anode deionized water gas-liquid separation tank, which are arranged in sequence according to the deionized water circulation flow direction. The anode deionized water gas-liquid separation tank has two outlets, one of which returns to the anode deionized water supply switch valve, and the other flows to the anode back pressure control valve through the anode deionized water gas-liquid separation tank oxygen outlet switch valve; The alkali solution supply unit comprises an anode alkali solution supply switch valve, an anode alkali solution circulation pump, an anode alkali solution flow meter, an anode alkali solution inlet check valve, an anode alkali solution inlet switch valve, an electrolytic cell, an anode alkali solution outlet switch valve and an anode alkali solution gas-liquid separation tank which are arranged in sequence according to the alkali solution circulation flow direction. The anode alkali solution gas-liquid separation tank has two outlets, one of which returns to the anode alkali solution supply switch valve, and the other flows to the anode back pressure control valve through the anode alkali solution gas-liquid separation tank oxygen outlet switch valve.

2. The AEM and PEM electrolyzer composite test bench according to claim 1, characterized in that: The electrolytic cell is shared by a deionized water supply unit and an alkali solution supply unit.

3. The AEM and PEM electrolyzer composite test bench according to claim 1, characterized in that: The anode back pressure control valve is shared by the deionized water supply unit and the alkali solution supply unit.

4. The AEM and PEM electrolyzer composite test bench according to claim 1, characterized in that: The electrolytic cell is also connected to a cathode gas-liquid separation tank.

5. The AEM and PEM electrolyzer composite test bench according to claim 1, characterized in that: The cathode gas-liquid separation tank is connected to a cathode back pressure control valve.

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