CN218756065U - Safe water electrolysis hydrogen and oxygen production system - Google Patents
Safe water electrolysis hydrogen and oxygen production system Download PDFInfo
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- CN218756065U CN218756065U CN202223441242.3U CN202223441242U CN218756065U CN 218756065 U CN218756065 U CN 218756065U CN 202223441242 U CN202223441242 U CN 202223441242U CN 218756065 U CN218756065 U CN 218756065U
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- oxygen
- pipe
- hydrogen
- separator
- alkali
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 75
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 75
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000001301 oxygen Substances 0.000 title claims abstract description 74
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 75
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 15
- 239000007789 gas Substances 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model relates to an electrolytic water technical field, concretely relates to safe electrolytic water hydrogen manufacturing, oxygen system, including the electrolysis trough, hydrogen separator and oxygen separator, DC power supply is connected to the electrolysis trough, hydrogen separator and oxygen separator are connected respectively to the hydrogen output tube and the oxygen output tube at electrolysis trough both ends, and hydrogen separator bottom is equipped with first lye pipe, and the oxygen separator bottom is equipped with second lye pipe, all is equipped with automatic regulating valve and check valve on first lye pipe and the second lye pipe, and alkali lye blending tank is connected respectively to first lye pipe and second lye pipe, and alkali lye blending tank intercommunication nitrogen gas air supply pipe is equipped with the blow-down pipe on the alkali lye blending tank. The utility model provides high system security has reduced administrative cost, and it has better adaptability to fluctuate pressure and the liquid level that causes to the electric current fluctuation.
Description
Technical Field
The utility model relates to the technical field of water electrolysis, in particular to a safe water electrolysis hydrogen and oxygen production system.
Background
In the current technology of hydrogen and oxygen production by water electrolysis, the electrolyzed alkali liquor containing hydrogen and oxygen respectively flows to a hydrogen separator and an oxygen separator, the alkali liquor and gas are separated by gravity, the hydrogen and the oxygen are respectively discharged from the upper parts of the hydrogen separator and the oxygen separator, the alkali liquor separated from the gas is left at the lower part, is directly connected through a pipeline, and then is pumped into an electrolytic tank through an alkali pump and then enters an electrolysis cycle. Because the hydrogen separator is communicated with the pipeline at the lower part of the oxygen separator, the liquid levels and the pressures of the hydrogen separator and the oxygen separator must be strictly controlled, and the liquid level difference between the hydrogen separator and the oxygen separator is too large, so that alkali liquor can flow from a high liquid level to a low liquid level, and the hydrogen and the oxygen are mixed to cause explosion danger.
In the production of electrolytic water, the control of the pressure and the liquid level of the separator is the key point of water electrolysis control. Although the existing electric control technology and software technology have been advanced, the automatic regulation of pressure and liquid level can be realized, and multiple interlocking alarms are provided to ensure the stable pressure and liquid level and the safe production, however, the current fluctuation is inevitable in the production, the current fluctuation can cause the pressure and liquid level fluctuation, if the fluctuation is frequent, the interlocking system can automatically stop, and the process of stopping and restarting affects the production efficiency. More importantly, this does not reduce the safety of the system for electrolysis of water by design, and there is still the possibility of mixing of hydrogen and oxygen. In the production of electrolytic water, the pressure is 5 to 40bar, and the higher the pressure is, the higher the amount of oxygen and hydrogen dissolved in water is, which is an important reason that the product hydrogen in water electrolysis contains oxygen and hydrogen, and is also one of unsafe factors of a water electrolysis system.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a safe electrolytic water hydrogen, oxygen system, improved system security, reduced administrative cost, pressure and the liquid level fluctuation that causes the electric current fluctuation have better adaptability.
Safe electrolytic water hydrogen manufacturing, oxygen system, including electrolysis trough, hydrogen separator and oxygen separator, DC power supply is connected to the electrolysis trough, hydrogen separator and oxygen separator are connected respectively to the hydrogen output tube and the oxygen output tube at electrolysis trough both ends, hydrogen separator bottom is equipped with first lye pipe, the oxygen separator bottom is equipped with second lye pipe, all be equipped with automatically regulated valve and check valve on first lye pipe and the second lye pipe, alkali lye blending tank is connected respectively to first lye pipe and second lye pipe, alkali lye blending tank intercommunication nitrogen gas air supply pipe, be equipped with the blow-down pipe on the alkali lye blending tank.
When the liquid level in the hydrogen separator or the oxygen separator is higher than a set value, the automatic regulating valve is opened to discharge the alkali liquor into the alkali liquor mixing tank, and the alkali liquor mixing tank is used for mixing the alkali liquor sent from the hydrogen separator and the oxygen separator through the automatic regulating valve. The larger the pressure is, the larger the gas dissolving amount in the water is, the pressure in the electrolytic water production is 5 to 40bar, and the pressure in the alkali liquor mixing tank is designed to be slightly higher than the atmospheric pressure. The design is favorable to hydrogen promptly, the alkali lye in the oxygen separator can flow into the alkali lye blending tank smoothly, also does benefit to the alkali lye of discharging into the alkali lye blending tank and separates out the trace oxygen or the hydrogen of dissolving in the alkali lye fast under the pressure drop state to take away the gas that separates out and discharge by blow-down pipe through nitrogen gas in real time, thereby guarantee that oxygen and hydrogen of dissolving in the alkali lye reduce to the minimum, let the electrolysis trough safer.
Preferably, a pure water tank is arranged on the nitrogen gas supply pipe, pure nitrogen is very dry and can take away moisture in the alkali liquor, so that the concentration of the alkali liquor is increased, the temperature is reduced, and nitrogen is firstly introduced into the pure water tank to increase the humidity and then introduced into the alkali liquor mixing tank.
Preferably, the pure water tank is respectively communicated with the hydrogen scrubber and the oxygen scrubber through a water replenishing pipe, and a water replenishing pump is arranged on the water replenishing pipe.
Preferably, the hydrogen separator and the oxygen separator are respectively communicated with the hydrogen scrubber and the oxygen scrubber.
Preferably, a hydrogen analyzer and an oxygen analyzer are arranged on the emptying pipe, the content of hydrogen and oxygen in the emptying gas is analyzed and monitored in real time, and if the content is too high, the condition that the gas separation is not thorough due to the fault of the hydrogen separator or the oxygen separator is proved.
Preferably, the alkali liquor mixing tank is communicated with the alkali adding tank through a recovery pipe, the alkali adding tank is communicated with the electrolytic cell through an alkali adding pipe, the recovery pipe is provided with a filter, and the alkali adding pipe is provided with an alkali pump. After a small amount of dissolved gas is separated out from the alkali liquor in the alkali liquor mixing tank, the alkali liquor is pressurized and pumped into the electrolytic bath through an alkali pump for recycling.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the safety of the system is improved, and the management cost is reduced;
2. the liquid levels and the pressures of the hydrogen and the oxygen separators are respectively controlled, so that the whole system is simpler and more convenient to operate;
3. contrast separator liquid level interlock system, the utility model discloses pressure and the liquid level fluctuation that causes the fluctuation of electric current have better adaptability.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
in the figure: 1. an electrolytic cell; 2. a hydrogen separator; 3. an oxygen separator; 4. a first alkaline solution pipe; 5. a second alkali liquor pipe; 6. an alkali liquor mixing tank; 7. a nitrogen gas supply pipe; 8. an emptying pipe; 9. a pure water tank; 10. a water replenishing pipe; 11. a hydrogen scrubber; 12. an oxygen scrubber; 13. a recovery pipe; 14. adding alkali into the tank; 15. adding an alkali tube; 16. a filter; 17. an alkali pump; 18. and (5) a water replenishing pump.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings.
It is noted that, in the text, relational terms such as first and second are used solely to distinguish one entity or action from another entity or action for convenience and convenience, and do not represent a sequential relationship.
As shown in figure 1, safe electrolytic water hydrogen manufacturing, oxygen system, including electrolysis trough 1, hydrogen separator 2 and oxygen separator 3, DC power supply is connected to electrolysis trough 1, hydrogen separator 2 and oxygen separator 3 are connected respectively to the hydrogen output tube and the oxygen output tube at 1 both ends of electrolysis trough, 2 bottoms of hydrogen separator are equipped with first lye pipe 4, 3 bottoms of oxygen separator are equipped with second lye pipe 5, all be equipped with automatic regulating valve and check valve on first lye pipe 4 and the second lye pipe 5, alkali liquor blending tank 6 is connected respectively to first lye pipe 4 and second lye pipe 5, alkali liquor blending tank 6 intercommunication nitrogen gas supply pipe 7 is equipped with blow-down pipe 8 on the alkali liquor blending tank 6.
The nitrogen gas supply pipe 7 is provided with a pure water tank 9.
The pure water tank 9 is respectively communicated with a hydrogen scrubber 11 and an oxygen scrubber 12 through a water replenishing pipe 10, and a water replenishing pump 18 is arranged on the water replenishing pipe 10.
The hydrogen separator 2 and the oxygen separator 3 are respectively communicated with a hydrogen scrubber 11 and an oxygen scrubber 12.
The emptying pipe 8 is provided with a hydrogen analyzer and an oxygen analyzer.
The alkali liquor mixing tank 6 is communicated with an alkali adding tank 14 through a recovery pipe 13, and the alkali adding tank 14 is communicated with the electrolytic cell 1 through an alkali adding pipe 15.
The recycling pipe 13 is provided with a filter 16, and the alkali adding pipe 15 is provided with an alkali pump 17.
The working process is as follows: when the liquid level in the hydrogen separator 2 or the oxygen separator 3 is higher than a set value, the automatic regulating valve is opened to discharge the alkali liquor into the alkali liquor mixing tank 6, and the alkali liquor discharged into the alkali liquor mixing tank 6 quickly separates out trace oxygen or hydrogen dissolved in the alkali liquor under the pressure reduction state; the nitrogen in the nitrogen supply pipe 7 firstly enters the pure water tank 9 for wetting, then enters the alkali liquor mixing tank 6, takes away gas separated out from the alkali liquor mixing tank 6 in real time and discharges the gas through the emptying pipe 8, and when the gas passes through the emptying pipe 8, the hydrogen analyzer and the oxygen analyzer detect the gas components in real time;
the hydrogen and oxygen electrolyzed by the electrolytic cell 1 are separated from the alkali liquor by the hydrogen separator 2 and the oxygen separator 3, then the hydrogen and oxygen enter the hydrogen washer 11 and the oxygen washer 12 respectively, the hydrogen and oxygen are sent out after being washed, and the pure water tank 9 supplements water to the hydrogen washer 11 and the oxygen washer 12 through the water supplementing pipe 10 under the action of the water supplementing pump 18;
after hydrogen or oxygen is separated out from the alkali liquor in the alkali liquor mixing tank 6, the alkali liquor is pumped into the electrolytic cell 1 through an alkali pump 17 for recycling.
Claims (7)
1. The utility model provides a safe electrolytic water hydrogen manufacturing, oxygen system, a serial communication port, including electrolysis trough (1), hydrogen separator (2) and oxygen separator (3), DC power supply is connected in electrolysis trough (1), hydrogen separator (2) and oxygen separator (3) are connected respectively to the hydrogen output tube and the oxygen output tube at electrolysis trough (1) both ends, hydrogen separator (2) bottom is equipped with first alkali lye pipe (4), oxygen separator (3) bottom is equipped with second alkali lye pipe (5), all be equipped with automatic regulating valve and check valve on first alkali lye pipe (4) and second alkali lye pipe (5), alkali lye blending tank (6) is connected respectively in first alkali lye pipe (4) and second alkali lye pipe (5), alkali lye blending tank (6) intercommunication nitrogen gas supply pipe (7), be equipped with drain pipe (8) on blending tank (6).
2. A system for producing hydrogen and oxygen by electrolyzing water safely as claimed in claim 1 wherein the nitrogen gas supply pipe (7) is provided with a pure water tank (9).
3. The safe system for producing hydrogen and oxygen by electrolyzing water as claimed in claim 2, wherein the pure water tank (9) is connected to the hydrogen scrubber (11) and the oxygen scrubber (12) through the water replenishing pipe (10), and the water replenishing pump (18) is provided on the water replenishing pipe (10).
4. The system for safely producing hydrogen and oxygen by electrolyzing water as claimed in claim 1, wherein the hydrogen separator (2) and the oxygen separator (3) are respectively communicated with the hydrogen scrubber (11) and the oxygen scrubber (12).
5. A system for the safe production of hydrogen and oxygen by electrolysis of water according to claim 1 wherein a hydrogen analyzer and an oxygen analyzer are provided on the vent pipe (8).
6. The system for safely producing hydrogen and oxygen by electrolyzing water as claimed in claim 1, wherein the alkali liquor mixing tank (6) is communicated with the alkali adding tank (14) through the recycling pipe (13), and the alkali adding tank (14) is communicated with the electrolytic cell (1) through the alkali adding pipe (15).
7. The system for safely producing hydrogen and oxygen by electrolyzing water as claimed in claim 6, wherein the recovery pipe (13) is provided with a filter (16), and the alkali adding pipe (15) is provided with an alkali pump (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223441242.3U CN218756065U (en) | 2022-12-22 | 2022-12-22 | Safe water electrolysis hydrogen and oxygen production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223441242.3U CN218756065U (en) | 2022-12-22 | 2022-12-22 | Safe water electrolysis hydrogen and oxygen production system |
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| Publication Number | Publication Date |
|---|---|
| CN218756065U true CN218756065U (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223441242.3U Active CN218756065U (en) | 2022-12-22 | 2022-12-22 | Safe water electrolysis hydrogen and oxygen production system |
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| CN (1) | CN218756065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116516415A (en) * | 2023-05-08 | 2023-08-01 | 清华四川能源互联网研究院 | Wide-range stable dynamic performance test system and operation method of alkaline electrolyzer |
| CN118326421A (en) * | 2024-04-12 | 2024-07-12 | 宁夏同德爱心循环能源科技有限公司 | Wind-solar-electricity cooperative electrolytic hydrogen production system |
-
2022
- 2022-12-22 CN CN202223441242.3U patent/CN218756065U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116516415A (en) * | 2023-05-08 | 2023-08-01 | 清华四川能源互联网研究院 | Wide-range stable dynamic performance test system and operation method of alkaline electrolyzer |
| CN116516415B (en) * | 2023-05-08 | 2025-03-25 | 清华四川能源互联网研究院 | A wide range stable dynamic performance test system and operation method for alkaline electrolytic cell |
| CN118326421A (en) * | 2024-04-12 | 2024-07-12 | 宁夏同德爱心循环能源科技有限公司 | Wind-solar-electricity cooperative electrolytic hydrogen production system |
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