CN213232516U - Electrochemical hydrogen pump system for preparing high-pressure high-purity hydrogen - Google Patents
Electrochemical hydrogen pump system for preparing high-pressure high-purity hydrogen Download PDFInfo
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- CN213232516U CN213232516U CN202022292530.1U CN202022292530U CN213232516U CN 213232516 U CN213232516 U CN 213232516U CN 202022292530 U CN202022292530 U CN 202022292530U CN 213232516 U CN213232516 U CN 213232516U
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Abstract
The utility model relates to an electrochemistry hydrogen pump system for preparing high-pressure high-purity hydrogen, including electrochemistry hydrogen pump, the low-pressure pipeline system connected with the low-pressure air chamber of electrochemistry hydrogen pump and the high-pressure pipeline system connected with the high-pressure air chamber of electrochemistry hydrogen pump, the low-pressure pipeline system includes low-pressure hydrogen source, air inlet pipeline, circulation pipeline, hydrogen water manager, low-pressure water knockout drum, the return-air inlet of low-pressure air chamber is connected to one end of circulation pipeline, the hydrogen water manager is connected to the other end to make unreacted hydrogen re-enter the low-pressure air chamber; the high-pressure pipeline system comprises a high-pressure water separator, a high-pressure gas cylinder and an exhaust pipeline, wherein one end of the exhaust pipeline is connected with a high-pressure gas chamber of the electrochemical hydrogen pump, and the other end of the exhaust pipeline is connected with the high-pressure gas cylinder. The hydrogen pump system can improve the pressurization effect, reduce the energy consumption and improve the hydrogen purity.
Description
Technical Field
The utility model relates to an electrochemistry hydrogen pump technical field, concretely relates to preparation high-pressure high-purity hydrogen's electrochemistry hydrogen pump system.
Background
At present, the full utilization of natural energy and hydrogen energy is the optimal choice for realizing carbon emission reduction and dealing with fossil energy exhaustion. The key problems of production, storage, transportation, utilization and other major links of the hydrogen are solved by utilizing the hydrogen energy.
Hydrogen is mostly present in a gaseous state, and during storage and transportation, hydrogen gas is compressed into high-pressure hydrogen gas or liquefied into liquid hydrogen. The method for compressing hydrogen into high-pressure hydrogen mainly comprises the steps of compressing the hydrogen by repeatedly doing work through mechanical energy and then storing the hydrogen in a high-pressure gas cylinder, so that not only is the pressurizing equipment huge, but also a large amount of energy is consumed in the working process, the noise is large, and the sealing piece is abraded due to the reciprocating motion of the pressurizing pump to cause gas leakage. When hydrogen is compressed to a certain high pressure, the compression factor increases, making further compression difficult and consuming more energy.
At present, the electrochemical hydrogen pump can replace a common reciprocating mechanical supercharging device, and compared with the latter, the electrochemical hydrogen pump has the advantages of compactness, high boosting efficiency, no mechanical action part, no need of maintenance, almost no noise and the like. The electrochemical hydrogen pump is mainly composed of two air chambers separated by a proton conducting membrane, and electrochemical catalysts are arranged on two sides of the proton conducting membrane. When direct current is externally connected, low-pressure hydrogen in the anode gas chamber is dissociated into protons under the action of electrocatalysis, and the protons are transmitted to the cathode gas chamber through the proton conducting membrane to regenerate high-pressure hydrogen, as shown in formula (1).
E＝(RT/2F)ln(P2/P1)+ir (1)
In the formula (1), E is a direct current voltage (V) applied to both sides of the hydrogen pump, R is a gas constant (8.3145J/K.mol), T is a temperature (K) in the hydrogen pump, F is a Faraday constant (96485C/mol), and P is a Faraday constant1Indicating the positive electrode side pressure (Pa), P2The negative electrode pressure (Pa) is shown, i is the current (a), and r is the total cell resistance (Ω).
When the temperature, the current and the total resistance are unchanged, the higher the applied direct current voltage is, the higher the hydrogen pressure is, the multiple increase is close to the natural constant power of the voltage value, and the boosting effect is increased sharply.
The patent of the panasonic corporation of application publication No. CN110552014A, in china, relates to an electrochemical pump, mainly describing a strong support structure for a membrane in single-stage pressurization; the multi-cell hydrogen pump structure is primarily described in the patent of CN 111082091A.
The invention patent of application publication No. CN111054192A relates to a method of producing and providing purified gas using an electrochemical cell.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an effectual electrochemistry hydrogen pump system of preparation high-pressure high-purity hydrogen of pressure boost to make high-pressure, high-purity hydrogen.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electrochemical hydrogen pump system for preparing high-pressure high-purity hydrogen comprises an electrochemical hydrogen pump, a low-pressure pipeline system connected with a low-pressure air chamber of the electrochemical hydrogen pump and a high-pressure pipeline system connected with a high-pressure air chamber of the electrochemical hydrogen pump, wherein the low-pressure pipeline system comprises a low-pressure hydrogen source, an air inlet pipeline, a circulating pipeline, a hydrogen water manager and a low-pressure water separator, the hydrogen water manager is arranged on the air inlet pipeline, one end of the air inlet pipeline is connected with an air inlet of the low-pressure air chamber, and the other end of the air inlet pipeline; one end of the circulating pipeline is connected with the air return port of the low-pressure air chamber, and the other end of the circulating pipeline is connected with the hydrogen water manager, so that unreacted hydrogen enters the low-pressure air chamber again;
the low-pressure water separator is arranged on the circulating pipeline and is used for gas-water separation at the low-pressure side;
the high-pressure pipeline system comprises a high-pressure water separator, a high-pressure gas cylinder and an exhaust pipeline, wherein one end of the exhaust pipeline is connected with a high-pressure gas chamber of the electrochemical hydrogen pump, the other end of the exhaust pipeline is connected with the high-pressure gas cylinder, and the high-pressure water separator is arranged on the exhaust pipeline and used for separating water and gas at a high-pressure side.
Further, the low-pressure hydrogen source is a low-pressure hydrogen cylinder, liquid hydrogen, metal hydrogen storage, organic hydrogen storage or on-site hydrogen production.
Further, the hydrogen water manager is one or a combination of a humidifier, an ejector and a hydrogen circulator.
Furthermore, a low-pressure stop valve and a pressure stabilizing valve are arranged on the air inlet pipeline between the low-pressure hydrogen source and the hydrogen water manager.
Furthermore, a waste discharge pipeline is connected between the hydrogen water manager and the low-pressure water separator on the circulating pipeline, and an exhaust valve is arranged on the waste discharge pipeline.
Further, the electrochemical hydrogen pump is a single-stage hydrogen pump or a multi-stage hydrogen pump.
Furthermore, one side of the exhaust pipeline close to the high-pressure gas cylinder is connected with a vent pipeline, and a vent valve is arranged on the vent pipeline.
Furthermore, a dryer is connected in series on the exhaust pipeline and is positioned between the high-pressure water separator and the high-pressure gas cylinder.
Furthermore, a first high-pressure stop valve is arranged between the high-pressure water separator and the dryer, and a second high-pressure stop valve is arranged between the dryer and the high-pressure gas cylinder.
The utility model has the advantages that:
the utility model discloses an electrochemistry hydrogen pump system has adopted the gas-water separator of efficient hydrogen water manager and high-low pressure both sides, and the water knockout drum of low pressure side can be with gas-water separation, and the unreacted hydrogen of separation gets into electrochemistry hydrogen pump once more through hydrogen water manager, improves the pressure boost efficiency, reduces the energy consumption, in addition the high-pressure water knockout drum of high-pressure side for the hydrogen purity who makes improves.
Drawings
Fig. 1 is a schematic diagram of an electrochemical hydrogen pump system for producing high pressure and high purity hydrogen gas according to the present invention.
Names corresponding to the marks in the figure:
1. the hydrogen gas generation system comprises a low-pressure hydrogen source, 2, a low-pressure stop valve, 3, a pressure stabilizing valve, 4, a hydrogen water manager, 5, an exhaust valve, 6, a low-pressure drain valve, 7, a low-pressure water separator, 8, an electrochemical hydrogen pump, 9, a direct-current power supply, 10, a high-pressure water separator, 11, a high-pressure drain valve, 12, a first high-pressure stop valve, 13, a dryer, 14, an emptying valve, 15, a second high-pressure stop valve, 16 and a high-pressure gas cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
The embodiment of the utility model provides a:
as shown in fig. 1, an electrochemical hydrogen pump system for preparing high-pressure high-purity hydrogen comprises an electrochemical hydrogen pump 8, a low-pressure pipeline system connected with a low-pressure gas chamber of the electrochemical hydrogen pump 8, and a high-pressure pipeline system connected with a high-pressure gas chamber of the electrochemical hydrogen pump 8, wherein the low-pressure pipeline system comprises a low-pressure hydrogen source 1, an air inlet pipeline, a circulation pipeline, a hydrogen water manager 4, and a low-pressure water separator 7. In this embodiment, the low-pressure hydrogen source 1 is a low-pressure hydrogen cylinder, and liquid hydrogen, metal hydrogen, organic hydrogen or on-site hydrogen production can also be used.
One end of the air inlet pipeline is connected with an air inlet of a low-pressure air chamber of the electrochemical hydrogen pump 8, and the other end of the air inlet pipeline is connected with the low-pressure hydrogen source 1. And a low-pressure stop valve 2 and a pressure stabilizing valve 3 are arranged on the air inlet pipeline between the low-pressure hydrogen source and the hydrogen water manager.
The hydrogen water manager 4 is arranged on the air inlet pipeline, and hydrogen from a low-pressure hydrogen source enters an air inlet of a low-pressure air chamber of the electrochemical hydrogen pump 8 after passing through the hydrogen water manager 4.
One end of the circulating pipeline is connected with the air return port of the low-pressure air chamber, and the other end of the circulating pipeline is connected with the hydrogen water management device 4, so that the unreacted hydrogen can enter the low-pressure air chamber again. The hydrogen water manager is one or the combination of a humidifier, an ejector and a hydrogen circulator. The hydrogen water manager 4 primarily humidifies the hydrogen gas entering the electrochemical hydrogen pump 8. In this embodiment, the hydrogen water manager 4 uses a humidifier combining heating bubbling and spraying, so that hydrogen enters the electrochemical hydrogen pump 8 in a saturated steam humidification state. The humidifier can be a break wheel, a membrane humidifier, a bubble humidifier, a spray humidifier, an ultrasonic atomization humidifier and the like.
The low-pressure water separator 7 is arranged on the circulating pipeline and used for gas-water separation at the low-pressure side. Unreacted hydrogen, water and other components discharged by the electrochemical hydrogen pump 8 are subjected to gas-water separation, the water is discharged by a low-pressure water discharge valve 6 of a low-pressure water separator 7, other gas components are discharged by an exhaust valve 5, and the unreacted hydrogen enters the hydrogen water manager and then enters the electrochemical hydrogen pump 8.
A waste discharge pipeline is connected between the hydrogen water manager 4 and the low-pressure water separator 7 on the circulating pipeline, and the exhaust valve 5 is arranged on the waste discharge pipeline.
The low-pressure drain valve 6 and the exhaust valve 5 are both normally closed valve members, and intermittently discharge water and gas. Normally, hydrogen from the low pressure water separator reenters the hydrogen water manager and enters the electrochemical hydrogen pump 8.
The high-pressure pipeline system comprises a high-pressure water separator 10, a high-pressure gas cylinder 16 and an exhaust pipeline, wherein one end of the exhaust pipeline is connected with a high-pressure gas chamber of the electrochemical hydrogen pump, and the other end of the exhaust pipeline is connected with the high-pressure gas cylinder 16. The high pressure water separator 10 is disposed on the exhaust pipe for water-gas separation on the high pressure side.
And one side of the exhaust pipeline close to the high-pressure gas bottle 16 is connected with an emptying pipeline, and the emptying pipeline is provided with an emptying valve 14. The exhaust pipeline is also connected with a dryer 13 in series, and the dryer 13 is positioned between the high-pressure water separator 10 and the high-pressure gas cylinder 16.
A first high-pressure stop valve 12 is arranged between the high-pressure water separator 10 and the dryer 13, and a second high-pressure stop valve 15 is arranged between the dryer 13 and the high-pressure gas cylinder 16. The low-pressure cutoff valve, the first high-pressure cutoff valve, and the second high-pressure cutoff valve in the present embodiment are defined by the high-pressure side and the low-pressure side, and are not limited.
The utility model discloses a preparation high-pressure high-purity hydrogen's electrochemistry hydrogen pump system's theory of operation as follows:
hydrogen enters a hydrogen manager 4 after passing through a low-pressure stop valve 2 and a pressure stabilizing valve 3, and enters an electrochemical hydrogen pump 8 in a humidifying state; under the condition that direct current is applied to the electrochemical hydrogen pump 8, hydrogen is dissociated into hydrogen protons under the action of a positive electrode electrocatalyst in a membrane electrode assembly in the electrochemical hydrogen pump 8, the hydrogen protons pass through a proton conducting membrane, electrons are obtained from a negative electrode electrocatalyst, and hydrogen is generated at the same time that the hydrogen pressure is P1Increase to P2The unreacted hydrogen gas and excess water, as well as the mixture of other components, flow out of the electrochemical hydrogen pump 8 into the low pressure water separator. From low pressureThe water outlet 7 is the circulating hydrogen which enters the hydrogen water manager 4 again and then enters the electrochemical hydrogen pump 8. The high-pressure hydrogen from the high-pressure chamber of the electrochemical hydrogen pump 8 enters a high-pressure water separator 10 for water-gas separation, and water is discharged by a high-pressure water discharge valve 11. The separated high-pressure hydrogen enters a dryer 13 through a first high-pressure stop valve 12, an exhaust pipeline needs to be emptied through an emptying valve in the operation process, the emptying valve is closed after emptying, and finally the high-pressure high-purity hydrogen enters a high-pressure gas bottle 16 through a second high-pressure stop valve 15 to be stored.
The electrochemical hydrogen pump adopts a single-stage hydrogen pump or a multi-stage hydrogen pump, and the principle belongs to the prior art. The proton conducting membrane in the membrane electrode assembly only allows hydrogen protons to pass through, and other components are blocked in the low-pressure gas chamber, resulting in high-purity, high-pressure hydrogen gas. If other components contain pollutant components, the anode electrocatalyst is selected from anti-poisoning catalysts.
The utility model discloses an electrochemistry hydrogen pump system of high-pressure high-purity hydrogen has following advantage:
(1) compared with a common mechanical supercharging device, the electrochemical hydrogen pump system has almost no noise and mechanical loss due to no mechanical action part, reduces the risk of air leakage, has high safety and almost does not need maintenance;
(2) by adopting high-efficiency hydrogen water management and gas-water separation technology, the supercharging effect is improved, and the energy consumption is reduced; the electrochemical hydrogen pump is compact, the hydrogen boosting efficiency is high, and the hydrogen purity is high;
(3) the structure is simple, the processing and the manufacturing are easy, the large-scale production is suitable, the cost can be greatly reduced, and meanwhile, the assembly process and the requirement are relatively simple and easy to control. The device can be applied to portable mobile hydrogen pressurizing equipment, fixed hydrogen pressurizing stations and the like, and can also be applied to high-purity hydrogen preparation equipment.
Claims (9)
1. An electrochemical hydrogen pump system for producing high pressure high purity hydrogen gas, characterized by: the hydrogen water circulating system comprises an electrochemical hydrogen pump, a low-pressure pipeline system connected with a low-pressure air chamber of the electrochemical hydrogen pump and a high-pressure pipeline system connected with a high-pressure air chamber of the electrochemical hydrogen pump, wherein the low-pressure pipeline system comprises a low-pressure hydrogen source, an air inlet pipeline, a circulating pipeline, a hydrogen water manager and a low-pressure water separator, the hydrogen water manager is arranged on the air inlet pipeline, one end of the air inlet pipeline is connected with an air inlet of the low-pressure air chamber, and the other end of; one end of the circulating pipeline is connected with the air return port of the low-pressure air chamber, and the other end of the circulating pipeline is connected with the hydrogen water manager, so that unreacted hydrogen enters the low-pressure air chamber again;
the low-pressure water separator is arranged on the circulating pipeline and is used for gas-water separation at the low-pressure side;
the high-pressure pipeline system comprises a high-pressure water separator, a high-pressure gas cylinder and an exhaust pipeline, wherein one end of the exhaust pipeline is connected with a high-pressure gas chamber of the electrochemical hydrogen pump, the other end of the exhaust pipeline is connected with the high-pressure gas cylinder, and the high-pressure water separator is arranged on the exhaust pipeline and used for separating water and gas at a high-pressure side.
2. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 1, characterized in that:
the low-pressure hydrogen source is a low-pressure hydrogen cylinder, liquid hydrogen, metal hydrogen storage, organic hydrogen storage or on-site hydrogen production.
3. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 1, characterized in that:
the hydrogen water manager is one or the combination of a humidifier, an ejector and a hydrogen circulator.
4. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 1, characterized in that:
and a low-pressure stop valve and a pressure stabilizing valve are arranged on the air inlet pipeline between the low-pressure hydrogen source and the hydrogen water manager.
5. An electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to any one of claims 1 to 4, characterized in that: and a waste discharge pipeline is connected between the hydrogen water manager and the low-pressure water separator on the circulating pipeline, and an exhaust valve is arranged on the waste discharge pipeline.
6. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 1, characterized in that:
the electrochemical hydrogen pump is a single-stage hydrogen pump or a multi-stage hydrogen pump.
7. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 1, characterized in that: and one side of the exhaust pipeline close to the high-pressure gas cylinder is connected with a vent pipeline, and a vent valve is arranged on the vent pipeline.
8. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 1, characterized in that: and the exhaust pipeline is also connected with a dryer in series, and the dryer is positioned between the high-pressure water separator and the high-pressure gas cylinder.
9. The electrochemical hydrogen pump system for producing high-pressure, high-purity hydrogen gas according to claim 8, characterized in that: and a first high-pressure stop valve is arranged between the high-pressure water separator and the dryer, and a second high-pressure stop valve is arranged between the dryer and the high-pressure gas cylinder.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959756A (en) * | 2021-05-31 | 2022-08-30 | 郑州正方科技有限公司 | High-pressure hydrogen preparation system |
| CN115732726B (en) * | 2022-11-22 | 2023-08-15 | 上海氢晨新能源科技有限公司 | Fuel cell anode tail gas treatment system device and tail gas treatment method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959756A (en) * | 2021-05-31 | 2022-08-30 | 郑州正方科技有限公司 | High-pressure hydrogen preparation system |
| CN115732726B (en) * | 2022-11-22 | 2023-08-15 | 上海氢晨新能源科技有限公司 | Fuel cell anode tail gas treatment system device and tail gas treatment method thereof |
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