CN214032715U - Apparatus for producing hydrogen by electrolysis of water - Google Patents
Apparatus for producing hydrogen by electrolysis of water Download PDFInfo
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- CN214032715U CN214032715U CN202121137908.9U CN202121137908U CN214032715U CN 214032715 U CN214032715 U CN 214032715U CN 202121137908 U CN202121137908 U CN 202121137908U CN 214032715 U CN214032715 U CN 214032715U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The utility model discloses a device for producing hydrogen by electrolyzing water, which comprises a water electrolysis bath, a hydrogen separator, an oxygen separator, an electrolyte mixer and a circulating pump; the hydrogen separator has a hydrogen separator electrolyte outlet; the oxygen separator is provided with an oxygen separator electrolyte outlet, and the water electrolyzer comprises a cathode plate, a cathode metal net, a cation exchange membrane, an anode metal net and an anode plate; the electrolyte mixer is provided with an inlet end and an outlet end, and the inlet end is respectively connected with the electrolyte outlet of the hydrogen separator and the electrolyte outlet of the oxygen separator; the circulating pump is provided with a circulating pump inlet and a circulating pump outlet, the circulating pump inlet is connected with the outlet end of the electrolyte mixer, and the circulating pump outlet is connected with the water electrolyzer. The utility model can improve the electrolysis efficiency, save energy, reduce consumption and improve the production stability.
Description
Technical Field
The utility model relates to a device for producing hydrogen through electrolysis of water.
Background
The traditional alkaline water electrolysis hydrogen production device generally adopts a diaphragm, the electrolysis efficiency is 70-80%, and the oxygen content in hydrogen is slightly high, so that certain devices are required to improve the safety of water electrolysis hydrogen production. The distance between the cathode plate and the anode plate in the water electrolyzer is larger, so that the resistance between the cathode and the anode is larger, and the improvement of the electrolytic efficiency is not facilitated. In addition, the electrolyte separated in the hydrogen separator and the oxygen separator generally flows directly into the water electrolyzer, which is not favorable for the balance of the electrolyte concentration in the water electrolyzer. The following studies have made certain improvements to the water electrolysis hydrogen production apparatus.
CN110023542A discloses a multi-pole electrolytic cell using a porous membrane containing inorganic particles as a separator. The bipolar type electrolytic cell comprises a plurality of groups of anodes, cathodes, and separators disposed between the anodes and the cathodes, wherein the average pore diameters of the anodes and the cathodes are 10nm to 200nm, and the separators contain inorganic particles having an average primary particle diameter of 20nm to 300 nm. This patent document maintains excellent electrolysis efficiency and improves the purity of the produced gas by optimizing the anode, cathode structure or separator structure, but does not mention how to treat the electrolyte separated in the hydrogen separator and the oxygen separator.
CN206706217U discloses a zero-polar-distance multi-coating hydrogen generator device, which comprises a lower cover plate, an anode, an ionic membrane, a cathode and an upper cover plate, wherein the top of the anode is provided with an anode coating, the bottom of the anode is provided with another anode coating, the top of the ionic membrane is provided with an ionic membrane coating, the bottom of the ionic membrane is provided with another ionic membrane coating, the ionic membrane is installed at the top of the anode, the top of the cathode is provided with a cathode coating, the bottom of the cathode is provided with another cathode coating, and the cathode is installed at the top of the ionic membrane. This patent document is more suitable for pure water electrolysis and is not suitable for industrial production.
CN105483747A discloses a device for producing hydrogen by electrolyzing water. The cathode chamber and the anode chamber are divided by a bipolar membrane. The bipolar membrane is formed by compounding a cation exchange membrane and an anion exchange membrane. The patent document can overcome the defects of large power consumption and high hydrogen production cost, but does not mention the electrolysis efficiency. In addition, the device structure is more complicated, is unfavorable for popularizing and applying.
Thus, further improvements in alkaline electrolyzed water hydrogen production apparatus are desired.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an equipment of hydrogen is produced to aquatic through electrolysis. The device of the utility model can greatly improve the electrolysis efficiency of the water electrolysis hydrogen production. Specifically, the electrolytic efficiency can be improved to more than 95% from 70-80% in the prior art. Furthermore, the device can save energy and reduce consumption, and can mix the electrolyte separated from the hydrogen separator and the oxygen separator and then convey the mixed electrolyte to the water electrolyzer, so that the concentration of the electrolyte is balanced, the production stability is improved, and the improvement of the electrolysis efficiency is facilitated.
The utility model discloses a following technical scheme reaches above-mentioned purpose.
The utility model provides a device for producing hydrogen by electrolyzing water, which comprises a hydrogen separator, an oxygen separator, electrolyte of a water electrolysis bath, an electrolyte mixer and a circulating pump;
the water electrolyzer is provided with a hydrogen gas liquid outlet and an oxygen gas liquid outlet;
the hydrogen separator is provided with a hydrogen liquid inlet, a hydrogen outlet and a hydrogen separator electrolyte outlet, the hydrogen separator is used for separating hydrogen and electrolyte, and the hydrogen liquid inlet is connected with the hydrogen liquid outlet of the water electrolyzer;
the oxygen separator is provided with an oxygen liquid inlet, an oxygen outlet and an electrolyte outlet of the oxygen separator, the oxygen separator is used for separating oxygen and electrolyte, and the oxygen liquid inlet is connected with the oxygen liquid outlet of the water electrolyzer;
the water electrolyzer also comprises a cathode plate, a cathode metal net, a cation exchange membrane, an anode metal net and an anode plate;
the cathode metal mesh is arranged between the cathode plate and the cation exchange membrane, two sides of the cathode metal mesh are respectively tightly attached to the cathode plate and the cation exchange membrane, a cathode chamber is formed between the cathode plate and the cation exchange membrane, and the cathode chamber is filled with cathode electrolyte; the cathode chamber is communicated with a hydrogen liquid outlet;
the anode metal mesh is arranged between the anode plate and the cation exchange membrane, and two sides of the anode metal mesh are respectively arranged in a manner of being tightly attached to the anode plate and the cation exchange membrane; the anode chamber is communicated with an oxygen liquid outlet;
the electrolyte mixer is provided with an inlet end and an outlet end, and the inlet end is respectively connected with the electrolyte outlet of the hydrogen separator and the electrolyte outlet of the oxygen separator;
the circulating pump is provided with a circulating pump inlet and a circulating pump outlet, the circulating pump inlet is connected with the outlet end of the electrolyte mixer, and the circulating pump outlet is connected with the water electrolyzer.
According to the utility model discloses an equipment, preferably, still include the balance pipe, it links to each other with oxygen separator electrolyte export and hydrogen separator electrolyte export respectively, and the balance pipe is used for balancing the liquid level of hydrogen separator and oxygen separator.
The apparatus according to the present invention preferably further comprises a hydrogen scrubber and an oxygen scrubber, wherein,
the hydrogen scrubber is provided with a hydrogen inlet to be scrubbed, a desalted water inlet of the hydrogen scrubber and a scrubbing hydrogen outlet; the hydrogen inlet to be washed is connected with the hydrogen outlet of the hydrogen separator;
the oxygen scrubber is provided with an oxygen inlet to be scrubbed, an oxygen scrubber desalted water inlet and a scrubbing oxygen outlet; the oxygen inlet to be washed is connected with the oxygen outlet of the oxygen separator.
According to the utility model discloses an equipment, preferably, still include hydrogen purification equipment, hydrogen purification equipment with the washing hydrogen export of hydrogen scrubber links to each other.
The apparatus according to the present invention preferably further comprises an oxygen purification apparatus, said oxygen purification apparatus being connected to the scrubbing oxygen outlet of said oxygen scrubber.
According to the apparatus of the present invention, preferably, the hydrogen scrubber further has a hydrogen scrubber washing liquid outlet for discharging a washing liquid produced by washing the hydrogen gas by the hydrogen scrubber; the oxygen scrubber also has an oxygen scrubber scrubbing liquid outlet for discharging scrubbing liquid produced by the oxygen scrubber scrubbing oxygen.
According to the device of the present invention, preferably, the hydrogen separator further has a hydrogen separator washing liquid inlet, the hydrogen separator washing liquid inlet being connected to the hydrogen scrubber washing liquid outlet.
According to the device of the present invention, preferably, the oxygen separator further has an oxygen separator washing liquid inlet, the oxygen separator washing liquid inlet being connected to the oxygen scrubber washing liquid outlet.
According to the utility model discloses an equipment, preferably, still include the purification water equipment, the purification water equipment is used for the water purification, and the purification water equipment has the export of purification water equipment, and the export of purification water equipment links to each other with hydrogen scrubber demineralized water import and oxygen scrubber demineralized water import respectively.
According to the utility model discloses an equipment, preferably, still include the charge pump, the charge pump has charge pump entry and charge pump export, and the charge pump entry links to each other with the export of purified water equipment, and the charge pump export links to each other with hydrogen scrubber demineralized water import and oxygen scrubber demineralized water import respectively.
The utility model discloses an in the equipment, be equivalent to zero polar distance between negative pole, cation exchange membrane and the positive pole, resistance is minimum, can energy saving and consumption reduction to adopt cation exchange membrane to replace traditional diaphragm, electrolytic efficiency improves greatly, and electrolytic efficiency can be improved to more than 95% by traditional 70 ~ 80%. Furthermore, the electrolyte separated from the hydrogen separator and the oxygen separator can be mixed and then conveyed to the water electrolyzer, so that the concentration of the electrolyte is balanced, and the production stability is improved. Because the cation exchange membrane is adopted, the utility model discloses equipment can also avoid hydrogen and oxygen to mix the emergence explosion incident to furthest. In addition, the zero polar distance reduces the vibration of the cation exchange membrane during operation, the condition that the cation exchange membrane generates pinholes is greatly reduced, and the service life of the electrode can be prolonged.
Drawings
FIG. 1 is a schematic view of the apparatus for producing hydrogen by electrolyzing water according to the present invention.
The reference numerals are explained below:
100-water electrolyzer, 110-cathode plate, 120-cathode metal net, 130-cation exchange membrane, 140-anode metal net, 150-anode plate, 210-hydrogen separator, 220-oxygen separator, 310-hydrogen scrubber, 320-oxygen scrubber, 400-electrolyte mixer, 500-circulating pump, 600-purified water equipment and 700-feeding pump.
Detailed Description
The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.
The device for producing hydrogen through electrolyzing water comprises a water electrolyzer, a hydrogen separator, an oxygen separator, a hydrogen washer, an oxygen washer, an electrolyte mixer and a circulating pump. Optionally, the apparatus for producing hydrogen by electrolyzing water of the present invention may further include a purified water apparatus, a feed pump, a hydrogen purification apparatus and an oxygen purification apparatus. Optionally, the apparatus for producing hydrogen by electrolyzing water of the present invention may further comprise a balance pipe. As described in detail below.
< Water electrolytic cell >
In the utility model, the water electrolyzer is provided with a hydrogen gas liquid outlet and an oxygen gas liquid outlet. The hydrogen gas liquid outlet is used for discharging a mixture of the hydrogen gas and the electrolyte. The oxygen liquid outlet is used for discharging the mixture of the oxygen and the electrolyte.
The water electrolyzer of the utility model comprises a cathode plate, a cathode metal net, a cation exchange membrane, an anode metal net and an anode plate. Thus being beneficial to forming a water electrolysis bath with zero polar distance, greatly reducing the resistance among the cathode, the cation exchange membrane and the anode, saving energy, reducing consumption and improving the electrolysis efficiency.
The cathode metal net is arranged between the cathode plate and the cation exchange membrane. The two sides of the cathode metal net are respectively tightly attached to the cathode plate and the cation exchange membrane. A cathode chamber is formed between the cathode plate and the cation exchange membrane and is filled with catholyte. The cathode metal mesh is positioned in the cathode chamber.
The cathode chamber is communicated with a hydrogen liquid outlet. This allows the mixture of hydrogen gas and electrolyte to be discharged.
The anode metal net is arranged between the anode plate and the cation exchange membrane, and two sides of the anode metal net are respectively tightly attached to the anode plate and the cation exchange membrane. An anode chamber is formed between the anode plate and the cation exchange membrane and is used for being filled with anolyte. The anode metal mesh is positioned in the anode chamber.
The anode chamber is communicated with an oxygen liquid outlet. This allows the mixture of oxygen and electrolyte produced in the anode compartment to be discharged.
According to the principle of water electrolysis, hydrogen is generated in the cathode chamber, and the generated hydrogen is discharged to a hydrogen separator through a hydrogen gas-liquid outlet; the anode chamber generates oxygen, and the generated oxygen is discharged to the oxygen separator through the oxygen liquid outlet.
In the utility model, the anode chamber and the cathode chamber are multiple groups.
In the utility model, the cathode, the cation exchange membrane and the anode have zero polar distance, so the resistance is minimum, and the cation exchange membrane is adopted to replace the traditional diaphragm, thus the electrolytic efficiency is greatly improved. The electrolytic efficiency can be improved to more than 95% from 70-80% of the traditional electrolytic efficiency, and the energy can be saved and the consumption can be reduced. According to a preferred embodiment of the present invention, the cation exchange membrane is a perfluorosulfonic acid cation exchange membrane.
In the present invention, cations (e.g., Na)+/H+/K+/Li+) Can enter the cathode through the cation exchange membrane to prevent OH-、O2 -And the explosion safety accident caused by the mixing of the hydrogen and the oxygen can be avoided to the maximum extent by passing through the gas. The metal net has smooth surface without burrs, cannot damage the cation exchange membrane, reduces the vibration of the cation exchange membrane in operation due to zero polar distance, greatly reduces the condition of generating pinholes on the cation exchange membrane, and has no damage to the cation exchange membraneThe life of the electrode can be extended.
In the present invention, other structures of the water electrolyzer than the structures of the cathode chamber and the anode chamber may be adopted as those known in the art. For example, the utility model discloses a water electrolyser still includes insulation board, utmost point frame, seal gasket etc..
< Hydrogen separator >
The hydrogen separator of the utility model is provided with a hydrogen liquid inlet, a hydrogen outlet, a hydrogen separator electrolyte outlet and a hydrogen separator washing liquid inlet. The hydrogen separator is used for separating hydrogen gas and electrolyte. Thus, the mixture of the hydrogen and the electrolyte can be separated to obtain the hydrogen and the electrolyte, thereby facilitating the further purification of the hydrogen.
The hydrogen liquid inlet is connected with the hydrogen liquid outlet of the water electrolyzer, namely, the mixture of the hydrogen and the electrolyte generated by the water electrolyzer enters the hydrogen separator. The hydrogen outlet is used for discharging hydrogen separated from most of electrolyte. And the electrolyte outlet of the hydrogen separator is used for discharging the separated electrolyte to the electrolyte mixer.
< Hydrogen scrubber >
The utility model discloses a hydrogen scrubber has the hydrogen import, hydrogen scrubber demineralized water import, washing hydrogen export and the export of hydrogen scrubber washing liquid of remaining to wash. The hydrogen scrubber is used to scrub the electrolyte (lye) in the hydrogen gas. The inlet of the hydrogen to be washed is connected with the hydrogen outlet of the hydrogen separator. The washing hydrogen outlet is connected with hydrogen purification equipment. The hydrogen purification equipment is used for further purifying the washing hydrogen obtained by the hydrogen washer. The hydrogen scrubber scrubbing liquid outlet of the hydrogen scrubber is connected with the hydrogen separator scrubbing liquid inlet of the hydrogen separator. Therefore, the washing liquid generated by the hydrogen scrubber can be discharged into the hydrogen separator and then into the water electrolyzer, so that the cyclic utilization of the washing liquid is realized, the resource is saved, and the device is more environment-friendly.
< oxygen separator >
The oxygen separator of the utility model is provided with an oxygen liquid inlet, an oxygen outlet, an oxygen separator electrolyte outlet and an oxygen separator washing liquid inlet. The oxygen separator is used for separating oxygen and electrolyte. The oxygen liquid inlet is connected with the oxygen liquid outlet of the water electrolyzer, namely the water electrolyzer discharges the mixture of the generated oxygen and the electrolyte to the oxygen separator for separation. The oxygen outlet is used to discharge oxygen, which separates most of the electrolyte, to the oxygen scrubber. And the electrolyte outlet of the oxygen separator is used for discharging the separated electrolyte to the electrolyte mixer.
< oxygen scrubber >
The oxygen scrubber of the utility model has an oxygen inlet, an oxygen scrubber desalted water inlet, an oxygen scrubber cleaning water outlet and an oxygen scrubber cleaning liquid outlet. The oxygen scrubber is used to scrub the electrolyte (lye) in the oxygen. The oxygen inlet to be washed is connected with the oxygen outlet of the oxygen separator. The washing oxygen outlet is connected with oxygen purification equipment. The oxygen purification equipment is used for further purifying the washing oxygen obtained by the oxygen washer. An oxygen scrubber scrubbing liquid outlet of the oxygen scrubber is connected with an oxygen separator scrubbing liquid inlet of the oxygen separator. Therefore, the cleaning solution generated by the oxygen scrubber is discharged into the oxygen separator and then conveyed to the water electrolyzer, so that the recycling of cleaning solution resources is realized, and the device is more environment-friendly.
< electrolyte mixer >
The electrolyte mixer of the utility model has an inlet end and an outlet end. The electrolyte mixer is used for effectively mixing the electrolyte. The inlet end is respectively connected with the electrolyte outlet of the hydrogen separator and the electrolyte outlet of the oxygen separator. The electrolyte mixer effectively mixes the electrolyte from the hydrogen separator and the oxygen separator, and the electrolyte is introduced into the water electrolyzer through the circulating pump. This can prevent the concentration difference of the electrolytes in the cathode chamber and the anode chamber, improve the production stability, and further contribute to the improvement of the electrolysis efficiency.
< circulating Pump >
The utility model discloses a circulating pump has circulating pump entry and circulating pump export. The inlet of the circulating pump is connected with the outlet end of the electrolyte mixer, and the outlet of the circulating pump is connected with the water electrolyzer. This is advantageous in improving the efficiency of electrolyte delivery. The structure of the circulating pump is not particularly limited, and the function of the circulating pump of the present invention can be achieved.
Thus, the utility model realizes the hydrogen production by electrolyzing water through the zero-polar distance mixed cation exchange membrane. In the present invention, the structures of the hydrogen separator, the hydrogen scrubber, the oxygen separator, the oxygen scrubber, and the electrolyte mixer are not particularly limited, and those known in the art may be employed.
< balance tube >
The utility model discloses an equipment can also include balanced pipe. The balance pipe is respectively connected with an oxygen separator electrolyte outlet of the oxygen separator and a hydrogen separator electrolyte outlet of the hydrogen separator, and is used for balancing the liquid levels of the hydrogen separator and the oxygen separator.
< purified Water facility >
The utility model discloses in, the water purification equipment is used for with the water purification, is mainly used for the desalination and obtains the demineralized water. The purified water device has a purified water device outlet. In the present invention, the structure of the apparatus for purifying water is not particularly limited, and those known in the art may be employed.
< Charge Pump >
In the utility model, purified water generated by the purified water device can be respectively conveyed to the hydrogen scrubber and the oxygen scrubber through the feed pump.
The feed pump has a feed pump inlet and a feed pump outlet. The inlet of the feed pump is connected with the outlet of the purified water device, and the outlet of the feed pump is respectively connected with the demineralized water inlet of the hydrogen scrubber and the demineralized water inlet of the oxygen scrubber. The purified water device is used for introducing purified water, namely desalted water, into the hydrogen scrubber and the oxygen scrubber through the feed pump, so that hydrogen in the hydrogen scrubber is washed to remove alkali liquor, and oxygen in the oxygen scrubber is washed to remove alkali liquor. The utility model discloses in, the structure of charge pump does not have the special limitation, can realize the utility model discloses a charge pump function can, can adopt those that the field is common.
The method of use of the above apparatus is described below: the demineralized water (i.e., purified water) is delivered to the hydrogen scrubber and the oxygen scrubber via the feed pumps; the washing liquid in the hydrogen washer flows automatically into the hydrogen separator; the scrubbing liquid in the oxygen scrubber flows automatically to the oxygen separator; hydrogen produced in the cathode chamber carries electrolyte (namely a mixture of the hydrogen and the electrolyte) to enter a hydrogen separator, the electrolyte automatically flows into an electrolyte mixer, the hydrogen enters a hydrogen scrubber and is discharged to hydrogen purification equipment from a scrubbing hydrogen outlet of the hydrogen scrubber; oxygen produced in the anode chamber entrains electrolyte (namely a mixture of the oxygen and the electrolyte) to enter an oxygen separator, the electrolyte automatically flows into an electrolyte mixer, the oxygen enters an oxygen scrubber and is discharged to oxygen purification equipment from a scrubbing oxygen outlet of the oxygen scrubber; the electrolytes from the hydrogen separator and the oxygen separator are effectively mixed in the electrolyte mixer and are delivered to the water electrolyzer by the circulating pump.
Example 1
FIG. 1 is a schematic view of the apparatus for producing hydrogen by electrolyzing water according to the present invention.
As shown in fig. 1, the apparatus for producing hydrogen by electrolyzing water of the present embodiment includes a water electrolysis tank 100, a hydrogen separator 210, an oxygen separator 220, a hydrogen scrubber 310, an oxygen scrubber 320, an electrolyte mixer 400, a circulation pump 500, a purified water apparatus 600, a feed pump 700, a hydrogen purification apparatus (not shown), and an oxygen purification apparatus (not shown).
The water electrolyzer 100 has a hydrogen liquid outlet and an oxygen liquid outlet. The hydrogen liquid outlet discharges a mixture of hydrogen and electrolyte. The oxygen liquid outlet discharges the mixture of oxygen and electrolyte.
The water electrolyzer 100 comprises a cathode plate 110, a cathode metal mesh 120, a cation exchange membrane 130, an anode metal mesh 140 and an anode plate 150.
The cathode metal mesh 120 is disposed between the cathode plate 110 and the cation exchange membrane 130, and two sides of the cathode metal mesh 120 are respectively disposed closely to the cathode plate 110 and the cation exchange membrane 130. A cathode chamber is formed between the cathode plate 110 and the cation exchange membrane 130, and the cathode chamber contains a catholyte. A cathode metal mesh 120 is located within the cathode chamber. The cathode chamber is communicated with a hydrogen liquid outlet.
The anode metal mesh 140 is disposed between the anode plate 150 and the cation exchange membrane 130, and two sides of the anode metal mesh 140 are respectively disposed closely to the anode plate 150 and the cation exchange membrane 130. An anode chamber is formed between the anode plate 150 and the cation exchange membrane 130, and the anode chamber contains an anolyte. An anode mesh 140 is located within the anode chamber. The anode chamber is communicated with an oxygen liquid outlet.
Because the thickness of the cathode metal mesh 120 and the anode metal mesh 140 is very small, which is equivalent to zero polar distance between the cathode, the cation exchange membrane 130 and the anode, the resistance is minimum, and the cation exchange membrane is adopted to replace the traditional diaphragm, so the electrolytic efficiency is greatly improved, and the electrolytic efficiency can be improved to more than 95% from 70-80% in the traditional method.
In this embodiment, the cation exchange membrane 130 is a perfluorosulfonic acid cation exchange membrane.
The hydrogen separator 210 has a hydrogen gas liquid inlet, a hydrogen gas outlet, a hydrogen separator electrolyte outlet, and a hydrogen separator wash liquid inlet. The hydrogen separator 210 separates hydrogen gas and electrolyte. The hydrogen liquid inlet is connected to the hydrogen liquid outlet of the water electrolyzer 100, i.e. the mixture of hydrogen and electrolyte produced by the water electrolyzer 100 enters the hydrogen separator 210.
The hydrogen scrubber 310 has a hydrogen gas inlet to be scrubbed, a hydrogen scrubber demineralized water inlet, a scrubbing hydrogen gas outlet, and a hydrogen scrubber scrubbing liquid outlet. The hydrogen inlet to be washed is connected to the hydrogen outlet of the hydrogen separator 210. The washing hydrogen outlet is connected with hydrogen purification equipment. The hydrogen scrubber scrubbing liquid outlet of the hydrogen scrubber 310 is connected to the hydrogen separator scrubbing liquid inlet of the hydrogen separator 210.
The oxygen separator 220 has an oxygen liquid inlet, an oxygen outlet, an oxygen separator electrolyte outlet, and an oxygen separator scrubbing liquid inlet. The oxygen separator 220 separates oxygen from the electrolyte. The oxygen liquid inlet is connected with the oxygen liquid outlet of the water electrolyzer 100.
The oxygen scrubber 320 has an oxygen to be scrubbed inlet, an oxygen scrubber demineralized water inlet, a scrubbing oxygen outlet, and an oxygen scrubber scrubbing liquid outlet. The inlet for oxygen to be washed is connected to the oxygen outlet of the oxygen separator 220. The washing oxygen outlet is connected with oxygen purification equipment. The oxygen scrubber wash outlet of the oxygen scrubber 320 is connected to the oxygen separator wash inlet of the oxygen separator 220.
The electrolyte mixer 400 has an inlet end and an outlet end. The inlet ends are connected to the hydrogen separator electrolyte outlet of the hydrogen separator 210 and the oxygen separator electrolyte outlet of the oxygen separator 220, respectively. The electrolytes from the hydrogen separator 210 and the oxygen separator 220 are efficiently mixed in the electrolyte mixer 400 and passed into the water electrolyzer 100 through the circulation pump 500.
The circulation pump 500 has a circulation pump inlet and a circulation pump outlet. The inlet of the circulation pump is connected to the outlet end of the electrolyte mixer 400, and the outlet of the circulation pump is connected to the anode chamber and the cathode chamber.
The purified water device 600 purifies water to obtain desalted water. Purified water device 600 has a purified water device outlet.
The feed pump 700 has a feed pump inlet and a feed pump outlet. The feed pump inlet is connected to the purified water plant outlet and the feed pump outlet is connected to the hydrogen scrubber desalted water inlet of the hydrogen scrubber 310 and the oxygen scrubber desalted water inlet of the oxygen scrubber 320, respectively. The purified water apparatus 600 feeds the desalted water into the hydrogen scrubber 310 and the oxygen scrubber 320 through the feed pump 700.
Example 2
The same as in example 1 except for the following settings:
the apparatus for producing hydrogen by electrolyzing water of the present embodiment further includes a balance pipe (not shown). The balancing pipe is connected to an oxygen separator electrolyte outlet of the oxygen separator 220 and a hydrogen separator electrolyte outlet of the hydrogen separator 210, respectively, for balancing the liquid levels of the hydrogen separator 210 and the oxygen separator 220.
The present invention is not limited to the above embodiments, and any variations, modifications, and substitutions that may occur to those skilled in the art may be made without departing from the spirit of the present invention.
Claims (10)
1. An apparatus for producing hydrogen by electrolyzing water, characterized in that:
the device comprises a hydrogen separator, an oxygen separator, a water electrolysis bath, an electrolyte mixer and a circulating pump;
the water electrolyzer is provided with a hydrogen gas liquid outlet and an oxygen gas liquid outlet;
the hydrogen separator is provided with a hydrogen liquid inlet, a hydrogen outlet and a hydrogen separator electrolyte outlet, the hydrogen separator is used for separating hydrogen and electrolyte, and the hydrogen liquid inlet is connected with the hydrogen liquid outlet of the water electrolyzer;
the oxygen separator is provided with an oxygen liquid inlet, an oxygen outlet and an electrolyte outlet of the oxygen separator, the oxygen separator is used for separating oxygen and electrolyte, and the oxygen liquid inlet is connected with the oxygen liquid outlet of the water electrolyzer;
the water electrolyzer also comprises a cathode plate, a cathode metal net, a cation exchange membrane, an anode metal net and an anode plate;
the cathode metal mesh is arranged between the cathode plate and the cation exchange membrane, two sides of the cathode metal mesh are respectively tightly attached to the cathode plate and the cation exchange membrane, a cathode chamber is formed between the cathode plate and the cation exchange membrane, and the cathode chamber is filled with cathode electrolyte; the cathode chamber is communicated with a hydrogen liquid outlet;
the anode metal mesh is arranged between the anode plate and the cation exchange membrane, and two sides of the anode metal mesh are respectively arranged in a manner of being tightly attached to the anode plate and the cation exchange membrane; the anode chamber is communicated with an oxygen liquid outlet;
the electrolyte mixer is provided with an inlet end and an outlet end, and the inlet end is respectively connected with the electrolyte outlet of the hydrogen separator and the electrolyte outlet of the oxygen separator;
the circulating pump is provided with a circulating pump inlet and a circulating pump outlet, the circulating pump inlet is connected with the outlet end of the electrolyte mixer, and the circulating pump outlet is connected with the water electrolyzer.
2. The apparatus of claim 1 further comprising equalization tubes connected to the oxygen separator electrolyte outlet and the hydrogen separator electrolyte outlet, respectively, for equalizing the liquid levels of the hydrogen separator and the oxygen separator.
3. The apparatus of claim 2, further comprising a hydrogen scrubber and an oxygen scrubber;
the hydrogen scrubber is provided with a hydrogen inlet to be scrubbed, a desalted water inlet of the hydrogen scrubber and a scrubbing hydrogen outlet; the hydrogen inlet to be washed is connected with the hydrogen outlet of the hydrogen separator;
the oxygen scrubber is provided with an oxygen inlet to be scrubbed, an oxygen scrubber desalted water inlet and a scrubbing oxygen outlet; the oxygen inlet to be washed is connected with the oxygen outlet of the oxygen separator.
4. The apparatus of claim 3, further comprising a hydrogen purification device connected to the scrubbed hydrogen outlet of the hydrogen scrubber.
5. The apparatus of claim 4, further comprising an oxygen purification device connected to the scrubbed oxygen outlet of the oxygen scrubber.
6. The apparatus according to any one of claims 3 to 5, wherein:
the hydrogen scrubber also has a hydrogen scrubber scrubbing liquid outlet for discharging a scrubbing liquid generated by the hydrogen scrubber scrubbing hydrogen gas;
the oxygen scrubber also has an oxygen scrubber scrubbing liquid outlet for discharging scrubbing liquid produced by the oxygen scrubber scrubbing oxygen.
7. The apparatus of claim 6 wherein the hydrogen separator further has a hydrogen separator wash inlet connected to the hydrogen scrubber wash outlet.
8. The apparatus of claim 7 wherein the oxygen separator further has an oxygen separator wash inlet connected to the oxygen scrubber wash outlet.
9. The apparatus of claim 8 further comprising a purified water means for purifying the water, the purified water means having a purified water means outlet connected to the hydrogen scrubber desalted water inlet and the oxygen scrubber desalted water inlet, respectively.
10. The apparatus of claim 9, further comprising a feed pump having a feed pump inlet and a feed pump outlet, the feed pump inlet coupled to the purified water apparatus outlet, the feed pump outlet coupled to the hydrogen scrubber desalted water inlet and the oxygen scrubber desalted water inlet, respectively.
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| CN113832498A (en) * | 2021-10-13 | 2021-12-24 | 上海氢迈工程技术有限公司 | Detection device convenient for detecting performance of electrode or diaphragm in water electrolysis hydrogen production device |
| CN113832480A (en) * | 2021-11-03 | 2021-12-24 | 四川华能氢能科技有限公司 | Condensate recovery system for water electrolysis hydrogen production |
| CN114411162A (en) * | 2021-11-22 | 2022-04-29 | 中国华能集团清洁能源技术研究院有限公司 | Method for producing hydrogen by electrolyzing water through double electrolytic tanks |
| CN114855196A (en) * | 2022-04-13 | 2022-08-05 | 四川帝威能源技术有限公司 | Water electrolysis hydrogen production equipment and hydrogen production process |
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| CN113832498A (en) * | 2021-10-13 | 2021-12-24 | 上海氢迈工程技术有限公司 | Detection device convenient for detecting performance of electrode or diaphragm in water electrolysis hydrogen production device |
| CN113832498B (en) * | 2021-10-13 | 2024-04-05 | 上海氢迈工程技术有限公司 | Detection device convenient for detecting electrode or diaphragm performance in water electrolysis hydrogen production device |
| CN113832480A (en) * | 2021-11-03 | 2021-12-24 | 四川华能氢能科技有限公司 | Condensate recovery system for water electrolysis hydrogen production |
| CN114411162A (en) * | 2021-11-22 | 2022-04-29 | 中国华能集团清洁能源技术研究院有限公司 | Method for producing hydrogen by electrolyzing water through double electrolytic tanks |
| CN114855196A (en) * | 2022-04-13 | 2022-08-05 | 四川帝威能源技术有限公司 | Water electrolysis hydrogen production equipment and hydrogen production process |
| CN114855196B (en) * | 2022-04-13 | 2023-07-25 | 四川帝威能源技术有限公司 | Water electrolysis hydrogen production equipment and hydrogen production process |
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