CN218710908U - Alkaline water electrolysis hydrogen production device - Google Patents
Alkaline water electrolysis hydrogen production device Download PDFInfo
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- CN218710908U CN218710908U CN202221965700.0U CN202221965700U CN218710908U CN 218710908 U CN218710908 U CN 218710908U CN 202221965700 U CN202221965700 U CN 202221965700U CN 218710908 U CN218710908 U CN 218710908U
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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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Abstract
The utility model provides an alkaline water electrolysis hydrogen plant, including electrolysis module, separation module, feeding module and automatic control module, the electrolysis module includes electrolysis trough and rectification power, and the separation module includes oxygen alkali lye knockout drum, hydrogen alkali lye knockout drum, desicator and hydrogen membrane separator, and the feeding module includes alkali lye circulating pump and fluid infusion jar, and the automatic control module includes electric automatic control cabinet, and the electric control of electrolysis module, separation module and feeding module all passes through electric wire connection in electric automatic control cabinet. The utility model discloses a hydrogen plant mainly comprises four system's modules of electrolysis module, separation module, feeding module and automatic control module, and compact structure, the investment is economized, through separation module's design, can make product hydrogen purity can reach more than 99.99%, can satisfy the application scene that requires height to hydrogen purity.
Description
Technical Field
The utility model relates to the field of hydrogen production, in particular to an alkaline water electrolysis hydrogen production device.
Background
Hydrogen is increasingly being used as a clean energy source in a wide variety of applications worldwide. Compared with other electrolytic hydrogen production processes, the alkaline water electrolysis hydrogen production process has the characteristics of low cost, large yield and investment saving, and is a mature water electrolysis hydrogen production technology at present. Nevertheless, with the increasingly strict environmental requirements, the related technologies in the field of clean energy, hydrogen energy, have been developed rapidly, and the hydrogen production technology by alkaline water electrolysis is also rapidly promoted and perfected.
The technical progress of the alkaline water electrolysis hydrogen production mainly comprises the increase of the scale of a single set of device, the improvement of the electrolysis efficiency, the reduction of the energy consumption and the like, and the technical progress can better meet the situation of large hydrogen consumption. For example, the publication number CN111364053B, which is named as a patent of a multi-channel alkaline hydrogen production system, in order to meet the requirement of large-scale hydrogen production, the circulating alkali liquor is output to an alkali liquor circulating pump and at least one controllable channel connected in parallel with the alkali liquor circulating pump, and then the circulating alkali liquor returns to the cathode of the electrolytic cell; the controller can control the hydrogen production amount according to the detected current of the electrolytic cell, and then the corresponding alkali liquor circulation amount reference value is calculated according to the hydrogen production amount; and regulating the alkali liquor circulation amount of the multi-channel alkaline hydrogen production system by controlling the working state of the controllable channels at the two ends of the alkali liquor circulating pump according to the reference value of the alkali liquor circulation amount.
However, for some occasions with high requirements on the purity of hydrogen, there is no good solution for how to obtain high-purity hydrogen by an alkaline water electrolysis hydrogen production system in the prior art, for example, application No. 201320772271, which is a patent of a hydrogen production system with a patent name of an automatic water replenishing subsystem, an electrolysis subsystem, a separation subsystem and a hydrogen filtration subsystem, compares the purity of the produced hydrogen, if the purity of the produced hydrogen is not satisfactory, the produced hydrogen is discharged through a tail gas outlet, and the system is re-configured until the purity of the hydrogen meets the requirements, so as to improve the purity of the hydrogen prepared by the system. According to the technology, after the hydrogen is prepared, the purity of the hydrogen is detected, the prepared hydrogen can only be discharged if the purity requirement is not met, obviously, the whole preparation process wastes energy and is high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an alkaline water electrolysis hydrogen production device to solve the problems existing in the prior art.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
an alkaline water electrolysis hydrogen production device comprises an electrolysis module, a separation module, a feeding module and an automatic control module, wherein the electrolysis module comprises an electrolysis bath and a rectification power supply, at least one set of cathode chamber and anode chamber is arranged in the electrolysis bath, an electrolysis diaphragm is arranged between the cathode chamber and the anode chamber, and the cathode chamber and the anode chamber are respectively provided with direct current by a cathode and an anode output by the rectification power supply;
the separation module comprises an oxygen alkali liquor separation tank, a hydrogen alkali liquor separation tank, a dryer and a hydrogen membrane separator, wherein an outlet pipeline of the anode chamber is connected with an inlet pipeline of the oxygen alkali liquor separation tank, an outlet pipeline of the cathode chamber is connected with an inlet pipeline of the hydrogen alkali liquor separation tank, an upper outlet pipeline of the oxygen alkali liquor separation tank is connected with an oxygen control valve, an upper outlet pipeline of the hydrogen alkali liquor separation tank is connected with a hydrogen control valve, an outlet pipeline of the hydrogen control valve is connected with an inlet pipeline of the dryer, an outlet pipeline of the dryer is connected with an inlet pipeline of the hydrogen membrane separator, and the hydrogen membrane separator is further provided with a hydrogen outlet pipeline and a tail gas outlet pipeline;
the feeding module comprises an alkali liquor circulating pump and a liquid supplementing tank, the lower outlet pipelines of the oxygen alkali liquor separating tank and the hydrogen alkali liquor separating tank are communicated and are connected with the inlet pipeline of the alkali liquor circulating pump, the outlet pipeline of the alkali liquor circulating pump is connected with the inlet pipeline of the electrolytic bath, a liquid supplementing control valve is connected between the outlet pipeline of the liquid supplementing tank and the inlet pipeline of the alkali liquor circulating pump, and the liquid supplementing tank is also provided with an alkaline aqueous solution inlet pipeline;
the automatic control module comprises an electric automatic control cabinet, and the electric controls of the electrolysis module, the separation module and the feeding module are all connected into the electric automatic control cabinet through electric wires.
Preferably, the oxygen alkali liquor separation tank and the hydrogen alkali liquor separation tank are equal in height and are arranged at the same horizontal position.
Preferably, the oxygen alkali liquor separation tank, the hydrogen alkali liquor separation tank and the liquid supplementing tank are respectively provided with a liquid level controller.
Preferably, a palladium membrane is arranged in the hydrogen membrane separator.
Preferably, the palladium membrane has a thickness of 5 to 20 μm.
The utility model discloses following beneficial effect has: the utility model discloses a hydrogen plant mainly comprises four system's modules of electrolysis module, separation module, feeding module and automatic control module, and compact structure, the investment is economized, through separation module's design, can make product hydrogen purity can reach more than 99.99%, can satisfy the application scene that hydrogen purity required height.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-an electrolytic cell; 2-an oxygen alkali liquor separation tank; 3-hydrogen alkali liquor separating tank; 4-a dryer; 5-hydrogen membrane separator; 6-liquid supplement tank; 7-an alkali liquor circulating pump; 8-a rectified power supply; 9-an oxygen control valve; 10-a hydrogen control valve; 11-a first level controller; 12-a second level controller; 13-a fluid compensation control valve; 14-a third level controller; 15-electric automatic control cabinet.
Detailed Description
The following description will further explain embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, an alkaline water electrolysis hydrogen production device comprises an electrolysis module, a separation module, a feeding module and an automatic control module, wherein the electrolysis module comprises an electrolysis cell 1 and a rectification power supply 8, at least one set of cathode chamber and anode chamber is arranged in the electrolysis cell 1, an electrolysis diaphragm is arranged between the cathode chamber and the anode chamber, and the cathode chamber and the anode chamber are respectively provided with direct current by a cathode and an anode output by the rectification power supply 8; the separation module comprises an oxygen alkali liquor separation tank 2, a hydrogen alkali liquor separation tank 3, a dryer 4 and a hydrogen membrane separator 5, an outlet pipeline of the anode chamber is connected with an inlet pipeline of the oxygen alkali liquor separation tank 2, an outlet pipeline of the cathode chamber is connected with an inlet pipeline of the hydrogen alkali liquor separation tank 3, an upper outlet pipeline of the oxygen alkali liquor separation tank 2 is connected with an oxygen control valve 9, an upper outlet pipeline of the hydrogen alkali liquor separation tank 3 is connected with a hydrogen control valve 10, an outlet pipeline of the hydrogen control valve 10 is connected with an inlet pipeline of the dryer 4, an outlet pipeline of the dryer 4 is connected with an inlet pipeline of the hydrogen membrane separator 3, and the hydrogen membrane separator 3 is also provided with a hydrogen outlet pipeline and a tail gas outlet pipeline; the feeding module comprises an alkali liquor circulating pump 7 and a liquid supplementing tank 6, the lower outlet pipelines of the oxygen alkali liquor separating tank 2 and the hydrogen alkali liquor separating tank 3 are communicated and connected with the inlet pipeline of the alkali liquor circulating pump 7, the outlet pipeline of the alkali liquor circulating pump 7 is connected with the inlet pipeline of the electrolytic bath 1, a liquid supplementing control valve 13 is connected between the outlet pipeline of the liquid supplementing tank 6 and the inlet pipeline of the alkali liquor circulating pump 7, and the liquid supplementing tank 6 is also provided with an alkaline aqueous solution inlet pipeline; the automatic control module comprises an electric automatic control cabinet 15, and the electric controls of the electrolysis module, the separation module and the feeding module are all connected into the electric automatic control cabinet 15 through electric wires.
The utility model discloses a hydrogen plant mainly comprises four system's modules of electrolysis module, separation module, feeding module and automatic control module, and compact structure, the investment is economized, through separation module's design, can make product hydrogen purity can reach more than 99.99%, can satisfy the application scene that hydrogen purity required height.
Further, the oxygen alkali liquor separation tank 2 and the hydrogen alkali liquor separation tank 3 are equal in height and are arranged at the same horizontal position. The design can keep the liquid levels of the two oxygen alkali liquor separation tanks 2 and the hydrogen alkali liquor separation tank 3 on the same horizontal plane, is convenient for observation and control, can also improve the process accuracy of the whole device, and ensures the purity requirement of the product hydrogen.
Furthermore, a first liquid level controller 11, a second liquid level controller 12 and a third liquid level controller 14 are respectively arranged in the oxygen alkali liquor separation tank 2, the hydrogen alkali liquor separation tank 3 and the liquid supplementing tank 6. Through the design of liquid level controller, be convenient for observe the alkali lye volume in each jar, the liquid supply control valve 13 and the chain automatic control of liquid level signal of second liquid level controller 12, it is low on the side to show the liquid level of hydrogen alkali lye knockout drum 3 as second liquid level controller 12, explains that the alkali lye volume is on the side few in the system, needs the fluid infusion, and the time and the aperture size that automatic operation liquid supply control valve 13 was opened are adjusted fluid infusion interval time and fluid infusion volume to this guarantees the continuous steady operation of device.
Furthermore, a palladium membrane is arranged in the hydrogen membrane separator 3, and the thickness of the palladium membrane is 5-20 μm. The membrane separator 5 adopts a palladium membrane with high selective permeability to hydrogen, the thickness of the palladium membrane is 5-20 mu m, trace oxygen and water vapor in the hydrogen can be effectively removed, and the purity of the purified hydrogen reaches more than 99.99 percent.
The working principle is as follows: when the device is started, adding a prepared NaOH or KOH alkaline aqueous solution with the mass concentration of 30% into a liquid supplementing tank 6, displaying the volume of the alkaline aqueous solution through a third liquid level controller 14, opening a liquid supplementing control valve 13, starting an alkaline solution circulating pump 7, injecting an alkaline solution into an electrolytic cell 1, after the electrolytic cell 1 is filled with the alkaline solution, feeding the alkaline solution into an oxygen alkaline solution separation tank 2 and a hydrogen alkaline solution separation tank 3, and displaying the liquid level of the alkaline solution in the tanks through a liquid level controller 11 and a liquid level controller 12 respectively; when the electrolytic tank 1 is filled with the alkali liquor, the liquid level controller 11 and the liquid level controller 12 reach the set values, and the alkali liquor keeps circulating flow, the rectification power supply 8 is started to provide direct current required by electrolysis for the electrolytic tank 1, the alkali liquor in the electrolytic tank 1 respectively generates hydrogen at the cathode and oxygen at the anode under the action of the direct current; an anode outlet pipeline of the electrolytic cell 1 is connected with an oxygen alkali liquor separation tank 2, and after oxygen generated by electrolysis and part of alkali liquor carried by the oxygen are separated from the alkali liquor in the separation tank 2, the oxygen adjusts the pressure through an oxygen control valve 9 from an upper pipeline and then flows out of the device; the cathode outlet pipeline of the electrolytic tank 1 is connected with a hydrogen alkali liquor separation tank 3, hydrogen generated by electrolysis and part of alkali liquor carried by the hydrogen are separated from the alkali liquor in the separation tank 3, the hydrogen enters a dryer 4 for adsorption and drying through a hydrogen control valve 10 from the upper outlet pipeline, most of water vapor contained in the hydrogen is removed, the rest of oxygen and water vapor are further separated and purified through a hydrogen membrane separator 5, the hydrogen membrane separator 5 adopts a palladium membrane with high selective permeability to the hydrogen, the thickness of the palladium membrane is 5-20 mu m, trace oxygen and water vapor in the hydrogen are removed, the purity of the purified hydrogen reaches more than 99.99 percent, the hydrogen flows out from an outlet at the upper part of the hydrogen membrane separator 5, a high-purity product hydrogen is prepared, and the rest of tail gas flows out from an outlet at the lower part of the hydrogen membrane separator 5.
Liquid phases in the oxygen separation tank 2 and the hydrogen separation tank 3 are alkali liquor, the liquid phases respectively flow out from the bottom of the tank and enter an alkali liquor circulating pump 7 together, the liquid phases are pressurized by the alkali liquor circulating pump 7 and then circulate back to the electrolytic tank 1 for electrolysis, a small amount of consumed alkali liquor and water need to be supplemented externally, the prepared alkali liquor and water are added into a liquid supplementing tank 6, a third liquid level controller 14 is installed on the side wall of the liquid supplementing tank 6, the third liquid level controller 14 displays the liquid volume in the liquid supplementing tank 6 in real time, a liquid supplementing control valve 13 is installed on a pipeline at the lower part of the liquid supplementing tank 6, liquid supplementing interval time and liquid supplementing amount are automatically controlled in a linkage mode through liquid level signals of the liquid supplementing control valve 13 and a second liquid level controller 12, when the second liquid level controller 12 displays that the liquid level of the hydrogen alkali liquor separation tank 3 is lower, the alkali liquor amount in the system is small, the liquid supplementing is needed to be supplemented, the opening time and the opening degree of the liquid supplementing control valve 13 are automatically operated, the liquid supplementing interval time and the liquid supplementing amount are adjusted, and the outlet of the liquid supplementing valve 13 is connected with pipelines from the bottoms of the oxygen alkali liquor separation tank 2 and the hydrogen alkali liquor separation tank 3, and the alkali liquor circulation pump 7 together, and the electrolysis tank 1 after the alkali liquor is pressurized.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (5)
1. An alkaline water electrolysis hydrogen production device is characterized in that: the device comprises an electrolysis module, a separation module, a feeding module and an automatic control module, wherein the electrolysis module comprises an electrolysis bath and a rectification power supply, at least one set of cathode chamber and anode chamber is arranged in the electrolysis bath, an electrolysis diaphragm is arranged between the cathode chamber and the anode chamber, and the cathode chamber and the anode chamber are respectively provided with direct current by a cathode and an anode output by the rectification power supply;
the separation module comprises an oxygen alkali liquor separation tank, a hydrogen alkali liquor separation tank, a dryer and a hydrogen membrane separator, wherein an outlet pipeline of the anode chamber is connected with an inlet pipeline of the oxygen alkali liquor separation tank, an outlet pipeline of the cathode chamber is connected with an inlet pipeline of the hydrogen alkali liquor separation tank, an outlet pipeline at the upper part of the oxygen alkali liquor separation tank is connected with an oxygen control valve, an outlet pipeline at the upper part of the hydrogen alkali liquor separation tank is connected with a hydrogen control valve, an outlet pipeline of the hydrogen control valve is connected with an inlet pipeline of the dryer, an outlet pipeline of the dryer is connected with an inlet pipeline of the hydrogen membrane separator, and the hydrogen membrane separator is further provided with a hydrogen outlet pipeline and a tail gas outlet pipeline;
the feeding module comprises an alkali liquor circulating pump and a liquid supplementing tank, an outlet pipeline at the lower part of the oxygen alkali liquor separating tank is communicated with an outlet pipeline at the lower part of the hydrogen alkali liquor separating tank and is connected with an inlet pipeline of the alkali liquor circulating pump, an outlet pipeline of the alkali liquor circulating pump is connected with an inlet pipeline of the electrolytic cell, a liquid supplementing control valve is connected between an outlet pipeline of the liquid supplementing tank and an inlet pipeline of the alkali liquor circulating pump, and an alkaline aqueous solution inlet pipeline is further arranged on the liquid supplementing tank;
the automatic control module comprises an electric automatic control cabinet, and the electric control of the electrolysis module, the separation module and the feeding module are all connected into the electric automatic control cabinet through electric wires.
2. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: the oxygen alkali liquor separation tank and the hydrogen alkali liquor separation tank are equal in height and are arranged at the same horizontal position.
3. The apparatus for hydrogen production by alkaline water electrolysis according to claim 2, characterized in that: liquid level controllers are arranged in the oxygen alkali liquor separation tank, the hydrogen alkali liquor separation tank and the liquid supplementing tank.
4. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: and a palladium membrane is arranged in the hydrogen membrane separator.
5. The apparatus for producing hydrogen by the electrolysis of alkaline water according to claim 4, characterized in that: the thickness of the palladium membrane is 5-20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221965700.0U CN218710908U (en) | 2022-07-26 | 2022-07-26 | Alkaline water electrolysis hydrogen production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221965700.0U CN218710908U (en) | 2022-07-26 | 2022-07-26 | Alkaline water electrolysis hydrogen production device |
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| Publication Number | Publication Date |
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| CN218710908U true CN218710908U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221965700.0U Active CN218710908U (en) | 2022-07-26 | 2022-07-26 | Alkaline water electrolysis hydrogen production device |
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- 2022-07-26 CN CN202221965700.0U patent/CN218710908U/en active Active
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Address after: 322200 012, floor 2, block a, 966 yidianhong Avenue, Pujiang County, Jinhua City, Zhejiang Province Patentee after: Zhejiang Sixintong Hydrogen Energy Technology Co.,Ltd. Address before: 322200 012, floor 2, block a, 966 yidianhong Avenue, Pujiang County, Jinhua City, Zhejiang Province Patentee before: PUJIANG SIXINTONG TECHNOLOGY Co.,Ltd. |