CN114481161A - Water electrolysis hydrogen production system and oxygen production subsystem - Google Patents
Water electrolysis hydrogen production system and oxygen production subsystem Download PDFInfo
- Publication number
- CN114481161A CN114481161A CN202210149734.0A CN202210149734A CN114481161A CN 114481161 A CN114481161 A CN 114481161A CN 202210149734 A CN202210149734 A CN 202210149734A CN 114481161 A CN114481161 A CN 114481161A
- Authority
- CN
- China
- Prior art keywords
- water
- oxygen
- hydrogen
- separator
- alkali liquor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
- C25B15/083—Separating products
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
Abstract
The invention discloses a hydrogen production system by electrolyzing water, wherein the positive electrode and the negative electrode of a power supply of a direct current power supply are respectively connected with the anode electrode and the cathode electrode of an electrolytic bath; an oxygen outlet at the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of an oxygen separator, and a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters an oxygen steam-water separator; the bottom of the raw material water tank is connected with an alkali liquor inlet through a valve; the hydrogen and mixed alkali liquor outlet at the upper part of the cathode area of the electrolytic cell is connected to the circulating alkali liquor inlet of the hydrogen separator, and the gas phase outlet at the top of the hydrogen separator is cooled by a cooler and then enters the hydrogen gas-water separator. The invention also discloses an oxygen generation subsystem by electrolyzing water. The invention provides a system for preparing hydrogen by combining electrochemical reaction and thermochemical reaction, which realizes the step-by-step preparation of hydrogen and oxygen, can be effectively implemented and operated, and can generate certain social benefit and economic benefit.
Description
Technical Field
The invention relates to the technical field of hydrogen production by water electrolysis, in particular to a water electrolysis hydrogen production system and an oxygen production subsystem.
Background
In the current mature hydrogen production industry in China, the hydrogen production by water electrolysis is considered as the most ideal hydrogen source without any pollution, and meanwhile, the hydrogen is used as the hydrogen combined with renewable energy sources to develop and efficiently utilize clean energy sources, thereby having important significance for the sustainable development of China, even the whole international society and the world economy.
At present, the main technologies for hydrogen production by water electrolysis mainly include three types: the technology for producing hydrogen by alkaline water electrolysis, Proton Exchange Membrane (PEM) water electrolysis and solid oxide water electrolysis. Among them, the alkaline water electrolysis hydrogen production is an important technology for realizing large-scale hydrogen production, and is one of the most mature hydrogen production technologies at present.
The process for preparing hydrogen by industrial alkaline water electrolysis uses water as raw material, and adopts an electrolytic hydrogen-preparing device composed of water electrolytic tank, hydrogen (oxygen) gas-liquid separator, hydrogen (oxygen) gas cooler and hydrogen (oxygen) gas scrubber to make industrial soft water pass through water-purifying device to prepare pure water, and feed it into raw material water tank, and feed it into alkali liquor system by means of water-supplementing pump, and make the raw material water undergo the process of electrolysis under the action of direct current, and in the alkaline electrolytic tank the water can be decomposed into H2And O2The mixture of hydrogen and alkali liquor from the electrolysis chamber flows out through an air passage at the cathode side, enters the lower part of a hydrogen liquid separator, is subjected to gas-liquid separation under the action of gravity, enters a washer for washing and cooling, finally enters drying and dehumidification, and is controlled by an adjusting valve to be output, and then enters a storage system after being sent into a hydrogen storage tank; the mixture of oxygen and alkali liquor produced by the electrolytic cell enters an oxygen separator, and the separated oxygen is emptied by an oxygen regulating valve.
With the development of the water electrolysis hydrogen production technology, on the basis of the traditional alkaline water electrolysis technology, a technology for preparing hydrogen and oxygen by electrolyzing water in a step-by-step manner by using a method combining electrochemical reaction and thermochemical reaction appears, namely in an electrolysis system, a cathode electrode adopts a hydrogen evolution catalytic electrode of a binary or ternary metal compound, and an anode electrode adopts a metal compound electrode with bidirectional reversible (oxidation/reduction) reaction, so that the hydrogen and the oxygen are prepared step by step:
when hydrogen is produced, under the condition that an external electrolysis direct current power supply is electrified (an anode and a cathode are respectively connected with a positive electrode and a negative electrode of the power supply), on the side of the cathode electrode, water molecules are electrochemically reduced on the surface of a cathode hydrogen evolution catalytic electrode under the action of a hydrogen evolution catalyst to release hydrogen; on the anode electrode side, a metal compound electrode having a reversible (oxidation/reduction) reaction generates an electrochemical oxidation reaction without releasing oxygen.
When oxygen is produced, an external direct current power supply is disconnected, the electrolyte or the anode electrode is heated to about 90-100 ℃ by adopting a thermochemical reaction activation method, at the moment, the anode electrode with reversible (oxidation/reduction) reaction is reduced due to the thermochemical instability, the thermochemical reduction reaction is generated, and oxygen is generated and released around the anode electrode.
Chinese patent CN 111074291 a discloses a new hydrogen production process by water electrolysis, which describes the above-mentioned hydrogen and oxygen production step by water electrolysis, but there is no device and system for realizing the above-mentioned technical application in the hydrogen production system produced and manufactured by the process so as to create great social and economic benefits in large-scale hydrogen production and greatly reduce cost.
Disclosure of Invention
Aiming at the prior art and the method for preparing hydrogen and oxygen by electrolyzing water step by step, the invention provides a hydrogen production system and an oxygen production subsystem by electrolyzing water, and the system or the device which is practical, can be implemented and operated and can produce social benefits and economic benefits is not provided.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a hydrogen production system by water electrolysis comprises an electrolytic cell, a direct current power supply, an oxygen separator, a hydrogen separator, an oxygen steam-water separator, a hydrogen steam-water separator and a raw material water tank; the positive electrode and the negative electrode of the direct current power supply are respectively connected with the anode electrode and the cathode electrode of the electrolytic tank, and the bottom of the electrolytic tank is provided with an alkali liquor inlet; an oxygen outlet at the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of the oxygen separator, a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters the oxygen steam-water separator, and an outlet of the oxygen steam-water separator is connected with an oxygen storage tank or is emptied; the bottom of the raw material water tank is connected with the alkali liquor inlet through a valve; and a hydrogen and mixed alkali liquor outlet at the upper part of a cathode area of the electrolytic cell is connected to a circulating alkali liquor inlet of the hydrogen separator, a gas phase outlet at the top of the hydrogen separator is cooled by a cooler and then enters the hydrogen gas steam-water separator, and an outlet of the hydrogen gas steam-water separator is connected with a hydrogen storage tank or reaches an inlet of the hydrogen gas scrubber for washing, drying and purifying the hydrogen gas to supply hydrogen to the outside.
Preferably, the water electrolysis hydrogen production system further comprises an alkali liquor circulating pump, an alkali liquor filter and an alkali liquor cooler; an alkali liquor circulating liquid outlet is formed in the bottom of the hydrogen separator and is connected to the alkali liquor inlet through the alkali liquor circulating pump, the alkali liquor filter and the alkali liquor cooler in sequence.
Preferably, the water electrolysis hydrogen production system further comprises an alkali distribution box and an alkali distribution pump; the bottom of the alkali blending box is connected to the inlet of the alkali blending pump through a valve, and the outlet of the alkali blending pump is connected with the liquid inlet of the alkali liquor.
Preferably, the bottom of the oxygen separator is provided with a pipeline connected with the top pipeline of the raw material water tank.
Preferably, the water electrolysis hydrogen production system further comprises a heat source and a heat energy water replenishing pump; the bottom of the raw material water tank is connected with the heat source through a pipeline, and the heat source is connected with the alkali liquor inlet through the heat energy water replenishing pump.
Preferably, the heat energy water replenishing pump is communicated with the raw material water tank through a branch pipeline.
Preferably, the oxygen separator, the raw material water tank, the heat energy water replenishing pump and the connecting pipeline are subjected to heat preservation treatment.
Preferably, the water electrolysis hydrogen production system further comprises a nitrogen tank; the nitrogen tank is connected with the liquid inlet of the alkali liquor through a pipeline.
Preferably, the bottom of the hydrogen gas-water separator is connected to a hydrogen water drainage water seal mechanism through a valve.
Preferably, the bottom of the oxygen steam-water separator is connected to an oxygen water outlet through a valve for discharging.
The invention also provides an electrolyzed water oxygen-making subsystem, which comprises an electrolytic bath, a direct current power supply, an oxygen separator, an oxygen-steam separator, a heat source and a raw material water tank; the positive electrode and the negative electrode of the direct current power supply are respectively communicated with the anode electrode and the cathode electrode of the electrolytic tank, and the bottom of the electrolytic tank is provided with an alkali liquor inlet; the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of the oxygen separator, a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters the oxygen steam-water separator, and an outlet of the oxygen steam-water separator is connected with an oxygen storage tank or is discharged; the bottom of the oxygen separator is provided with a pipeline which is connected with the top pipeline of the raw material water tank; the bottom of the raw material water tank is connected with the heat source through a pipeline, and the heat source is connected with the alkali liquor inlet through the heat energy water replenishing pump.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a system for preparing hydrogen (and oxygen) by combining electrochemical reaction and thermochemical reaction, which can realize separation of an oxygen preparation process and a hydrogen preparation process of electrolyzed water by matching with a membraneless electrolytic bath and prepare the electrolyzed water step by step.
2. Compared with the traditional system for producing hydrogen by electrolyzing water in alkaline, the system is combined with the method for preparing hydrogen (and oxygen) step by step, the system for producing hydrogen (oxygen) by electrolyzing water is optimized and improved, a subsystem for preparing oxygen is formed independently, the heat preservation design is added for the oxygen production system, the rapid start and low-temperature start of the whole system for producing hydrogen (oxygen) by electrolyzing water can be realized, and the starting time is shorter than that of the traditional system for producing hydrogen (oxygen) by alkaline electrolyzing water. Meanwhile, hot water or saturated steam is introduced into the electrolytic cell to exchange oxygen, and electrolyte is also provided for system supplement.
3. In the subsystem of system oxygen, the thermochemical reaction activation that has not only realized making oxygen in-process of the heat source decomposes the system oxygen, provides the required heat of electrolysis water in-process moreover for the system, can effectual improvement system efficiency.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above-described advantages at the same time.
Drawings
FIG. 1 is a block diagram of a hydrogen production system by water electrolysis according to the present invention.
Detailed Description
The following further describes 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 involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
Referring to fig. 1, a system for producing hydrogen by electrolyzing water comprises an electrolytic cell, a dc power supply, an oxygen separator, a hydrogen separator, an oxygen-water separator, a hydrogen-water separator and a raw material water tank; the positive electrode and the negative electrode of a direct current power supply are respectively connected with the anode electrode and the cathode electrode of the electrolytic cell, and the bottom of the electrolytic cell is provided with an alkali liquor inlet; an oxygen outlet at the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of an oxygen separator through an oxygen outlet electromagnetic valve, a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters an oxygen steam-water separator, and an outlet of the oxygen steam-water separator is connected with an oxygen storage tank or is discharged; the bottom of the raw material water tank is connected with an alkali liquor inlet through a valve; the hydrogen and mixed alkali liquor outlet at the upper part of the cathode area of the electrolytic cell is connected to the circulating alkali liquor inlet of the hydrogen separator through a hydrogen outlet electromagnetic valve, the gas phase outlet at the top of the hydrogen separator is cooled by a cooler and then enters the hydrogen gas-water separator, the outlet of the hydrogen gas-water separator is connected with a hydrogen storage tank or is connected to the inlet of the hydrogen gas scrubber for washing, drying and purifying the hydrogen gas, and the hydrogen is supplied to the outside.
In one embodiment, the water electrolysis hydrogen production system further comprises an alkali liquor circulating pump, an alkali liquor filter and an alkali liquor cooler; the bottom of the hydrogen separator is provided with an alkali liquor circulating liquid outlet which is connected to an alkali liquor inlet through an alkali liquor circulating pump, an alkali liquor filter and an alkali liquor cooler in sequence.
In this embodiment, the alkali liquor circulating liquid outlet is connected to the alkali liquor inlet through the alkali liquor circulating pump, the alkali liquor filter and the alkali liquor cooler in sequence to form a circulating hydrogen production system.
In one embodiment, the water electrolysis hydrogen production system further comprises an alkali distribution box and an alkali distribution pump; the bottom of the alkali blending box is connected to the inlet of an alkali blending pump through a valve, and the outlet of the alkali blending pump is connected with the liquid inlet of alkali liquor.
In this embodiment, when the hydrogen production system monitors that the liquid level is low or the concentration of the alkali liquor is too low, the alkali liquor is supplemented. The bottom of the raw material water tank and the bottom of the alkali distribution tank are connected to a sewage discharge outlet through a valve together, and the raw material water tank and the alkali distribution tank are used for carrying out sewage discharge treatment when a system is overhauled.
In one embodiment, the water electrolysis hydrogen production system further comprises a heat source and a heat energy water replenishing pump; the bottom of the raw material water tank is connected with a heat source through a pipeline, and the heat source is connected with an alkali liquor inlet through a heat energy water replenishing pump.
In one embodiment, the bottom of the oxygen separator is provided with a conduit connected to the top conduit of the feed water tank.
In this embodiment, the bottom of the oxygen separator is provided with a pipeline connected with the top pipeline of the raw material water tank, the pipeline is provided with an electromagnetic valve, the bottom of the raw material water tank is provided with a valve connected with an external heat source, the heat source performs heating or heat exchange, and the heat source is connected with the bottom raw material inlet of the electrolytic tank through a heat energy water replenishing pump to form a circulating oxygen generation system.
In one embodiment, the heat energy water replenishing pump is communicated with the raw material water tank through a branch pipeline.
In this embodiment, the heat energy moisturizing pump of connecting raw materials water tank and heat source communicates with raw materials water tank through the branch road pipeline, forms the circulation system of heat energy, through with outside heat exchange, keeps the sufficient reaction temperature of circulation system oxygen system, and the system keeps the temperature of water to be 95 ~ 110 ℃.
In one embodiment, the oxygen separator, the raw water tank, the heat energy water replenishing pump and the connecting pipeline are all subjected to heat preservation treatment.
In one embodiment, the system for producing hydrogen by electrolyzing water further comprises a nitrogen tank; the nitrogen tank is connected with the liquid inlet of the alkali liquor through a pipeline.
In this embodiment, the nitrogen tank is used for purging the inside of the electrolytic cell when the oxygen replacement preparation is performed after the hydrogen production step is completed, so that the residual hydrogen gas is discharged to the hydrogen separator, the mixing of oxygen and hydrogen is prevented, and the purity of hydrogen is ensured. The method comprises the following implementation steps: when hydrogen is prepared and no hydrogen is generated around the cathode electrode, the external direct current power supply is disconnected, the nitrogen gas inlet valve is opened, nitrogen enters the electrolytic cell through the alkali liquor inlet at the bottom of the electrolytic cell, nitrogen purging is carried out on the electrolytic cell for 30-60 s, and residual gas and alkali liquor in the electrolytic cell are discharged through the hydrogen outlet of the electrolytic cell and enter the hydrogen separator.
In one embodiment, the bottom of the hydrogen gas-water separator is connected to a hydrogen water drainage water seal mechanism through a valve.
In one embodiment, the bottom of the oxygen steam-water separator is connected to the oxygen outlet through a valve.
In one embodiment, the water electrolysis hydrogen production system of the invention works according to the following principle:
1. the advanced hydrogen production step of the circulating hydrogen production system comprises the following steps:
pumping alkaline water, such as 30-40% potassium hydroxide or sodium hydroxide aqueous solution, into an electrolytic cell and a hydrogen production system through an alkali distribution pump and a heat energy water replenishing pump, closing an electromagnetic valve of an oxygen outlet at the top of the electrolytic cell, opening an electromagnetic valve of a hydrogen outlet at the top of the electrolytic cell, disconnecting the alkali distribution pump after ensuring that the alkali liquor of a hydrogen separator reaches a designed liquid level, opening an alkali liquor circulating pump, and enabling the alkali liquor to circularly run in the hydrogen production system through the power of the alkali liquor circulating pump;
an external direct current power supply of the alkaline electrolytic cell is switched on, under the action of direct current electrolysis, the cathode electrode of the electrolytic cell electrochemically reduces water molecules in the electrolyte solution on the surface of the hydrogen evolution catalytic cathode electrode under the action of a catalyst to release hydrogen; the metal compound anode electrode with bidirectional reversibility (oxidation/reduction) generates electrochemical oxidation reaction, but does not release oxygen, thereby completing the preparation of hydrogen;
during oxygen generation, an external direct current power supply is disconnected, the electrolyte or the anode electrode is heated to about 90-100 ℃ by adopting a thermal energy chemical activation method, and at the moment, the anode electrode with reversible oxidation generates electrochemical reduction reaction.
2. Nitrogen purging: as described above:
when hydrogen is prepared, when no hydrogen is generated around the cathode electrode, the external direct current power supply is disconnected, the nitrogen gas inlet valve is opened, nitrogen enters the electrolytic cell through the alkali liquor inlet, nitrogen purging is carried out on the electrolytic cell for 30-60 s, and residual gas and alkali liquor in the electrolytic cell are discharged through the hydrogen outlet of the electrolytic cell and enter the hydrogen separator.
3. A later oxygen generation step of the circulating oxygen generation system:
after nitrogen purging is completed, at the moment, an external direct-current power supply of the alkaline electrolytic cell is disconnected, an electromagnetic valve of a hydrogen outlet of the electrolytic cell is closed, an electromagnetic valve of an oxygen outlet at the top of the electrolytic cell is opened, a heat energy water replenishing pump is started, high-temperature saturated steam or high-temperature aqueous solution is pumped into the electrolytic cell through the heat energy water replenishing pump, and the temperature of the aqueous electrolyte solution in the electrolytic cell reaches about 95-110 ℃; and enters the oxygen separator through an oxygen outlet at the top of the electrolytic cell, and at the moment, the bidirectional reversible (oxidation/reduction) metal compound anode electrode in the electrolytic cell is reduced due to chemical reduction reaction generated by the activation of heat energy, and oxygen is generated and released around the anode electrode.
4. The steps of the method are implemented step by step, so that the steps 1, 2 and 3 are alternately and circularly carried out, and the preparation of the hydrogen and the oxygen in different time periods can be realized.
Example two
Referring to fig. 1, an oxygen generation subsystem by water electrolysis includes an electrolytic cell, a dc power supply, an oxygen separator, an oxygen-steam separator and a raw water tank; the positive electrode and the negative electrode of a direct current power supply are respectively connected with the anode electrode and the cathode electrode of the electrolytic cell, and the bottom of the electrolytic cell is provided with an alkali liquor inlet; an oxygen outlet at the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of an oxygen separator, a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters an oxygen steam-water separator, and an outlet of the oxygen steam-water separator is connected with an oxygen storage tank or is discharged; the bottom of the oxygen separator is provided with a pipeline which is connected with the top pipeline of the raw material water tank; the bottom of the raw material water tank is connected with a heat source through a pipeline, a valve is arranged on the pipeline, and the heat source is connected with an alkali liquor inlet through a heat energy water replenishing pump.
In this embodiment, the working principle of the water electrolysis oxygen generation subsystem can refer to the oxygen generation part in the water electrolysis hydrogen generation system, and is not described herein again.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. A hydrogen production system by water electrolysis is characterized in that: comprises an electrolytic bath, a direct current power supply, an oxygen separator, a hydrogen separator, an oxygen steam-water separator, a hydrogen steam-water separator and a raw material water tank; the positive electrode and the negative electrode of the direct current power supply are respectively connected with the anode electrode and the cathode electrode of the electrolytic tank, and the bottom of the electrolytic tank is provided with an alkali liquor inlet; an oxygen outlet at the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of the oxygen separator, a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters the oxygen steam-water separator, and an outlet of the oxygen steam-water separator is connected with an oxygen storage tank or is discharged; the bottom of the raw material water tank is connected with the alkali liquor inlet through a valve; and the outlet of the hydrogen gas-water separator is connected with a hydrogen storage tank or an inlet of a hydrogen scrubber for washing, drying and purifying the hydrogen gas, and supplying the hydrogen gas to the outside.
2. A system for producing hydrogen by electrolyzing water as claimed in claim 1, wherein: comprises an alkali liquor circulating pump, an alkali liquor filter and an alkali liquor cooler; an alkali liquor circulating liquid outlet is formed in the bottom of the hydrogen separator and is connected to the alkali liquor inlet through the alkali liquor circulating pump, the alkali liquor filter and the alkali liquor cooler in sequence.
3. A system for producing hydrogen by electrolyzing water as claimed in claim 1, wherein: comprises an alkali preparation box and an alkali preparation pump; the bottom of the alkali blending box is connected to the inlet of the alkali blending pump through a valve, and the outlet of the alkali blending pump is connected with the liquid inlet of the alkali liquor.
4. A system for producing hydrogen by electrolyzing water as claimed in claim 1, wherein: the bottom of the oxygen separator is provided with a pipeline which is connected with the top pipeline of the raw material water tank.
5. A system for producing hydrogen by electrolyzing water as claimed in claim 1, wherein: comprises a heat source and a heat energy water replenishing pump; the bottom of the raw material water tank is connected with the heat source through a pipeline, and the heat source is connected with the alkali liquor inlet through the heat energy water replenishing pump.
6. A system for producing hydrogen by electrolyzing water as claimed in claim 5, wherein: the heat energy water replenishing pump is communicated with the raw material water tank through a branch pipeline.
7. A system for producing hydrogen by electrolyzing water as claimed in claim 6, wherein: and the oxygen separator, the raw material water tank, the heat energy water replenishing pump and the connecting pipeline are subjected to heat preservation treatment.
8. A system for producing hydrogen by electrolyzing water as claimed in claim 1, wherein: comprises a nitrogen tank; the nitrogen tank is connected with the liquid inlet of the alkali liquor through a pipeline.
9. A system for producing hydrogen by electrolyzing water as claimed in claim 1, wherein: the bottom of the hydrogen gas-water separator is connected to a hydrogen water drainage water seal mechanism through a valve.
10. An oxygen generation subsystem by electrolyzing water, which is characterized in that: comprises an electrolytic bath, a direct current power supply, an oxygen separator, an oxygen-steam separator, a heat source and a raw material water tank; the positive electrode and the negative electrode of the direct current power supply are respectively communicated with the anode electrode and the cathode electrode of the electrolytic tank, and the bottom of the electrolytic tank is provided with an alkali liquor inlet; the upper part of an anode area of the electrolytic cell is connected to a heat energy circulating water inlet of the oxygen separator, a gas phase outlet at the top of the oxygen separator is cooled by a cooler and then enters the oxygen steam-water separator, and an outlet of the oxygen steam-water separator is connected with an oxygen storage tank or is discharged; the bottom of the oxygen separator is provided with a pipeline which is connected with the top pipeline of the raw material water tank; the bottom of the raw material water tank is connected with the heat source through a pipeline, and the heat source is connected with the alkali liquor inlet through the heat energy water replenishing pump.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022101055970 | 2022-01-28 | ||
| CN202210105597 | 2022-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114481161A true CN114481161A (en) | 2022-05-13 |
Family
ID=81483280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210149734.0A Pending CN114481161A (en) | 2022-01-28 | 2022-02-18 | Water electrolysis hydrogen production system and oxygen production subsystem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114481161A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990571A (en) * | 2022-05-25 | 2022-09-02 | 中国联合重型燃气轮机技术有限公司 | Water electrolysis device |
| CN115094453A (en) * | 2022-06-29 | 2022-09-23 | 上海燃气工程设计研究有限公司 | Uninterrupted distributed water electrolysis hydrogen production device for storage |
| CN115747853A (en) * | 2022-11-21 | 2023-03-07 | 时代氢源(深圳)科技有限公司 | Multiple circulating cooling system of small hydrogen production equipment |
| CN117466365A (en) * | 2023-03-09 | 2024-01-30 | 中国科学院大连化学物理研究所 | Electrolytic water hydrogen production coupling sea water desalination system and method |
| CN117468026A (en) * | 2023-03-09 | 2024-01-30 | 中国科学院大连化学物理研究所 | System and method for co-production of hydrogen and pure water based on offshore wind power |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043192Y (en) * | 2007-06-15 | 2008-04-02 | 哈尔滨机联氢能源装备制造有限公司 | Device for manufacturing hydrogen and oxygen by electrolyzing water in natural circulation of electrolytic solution |
| CN104694950A (en) * | 2015-03-20 | 2015-06-10 | 国家电网公司 | Solar optothermal coupled high-temperature water electrolysis hydrogen production system |
| CN204589321U (en) * | 2015-03-27 | 2015-08-26 | 淄博安泽特种气体有限公司 | Water electrolysis is utilized to prepare pure hydrogen and oxygen reclamation system |
| CN105420750A (en) * | 2015-12-10 | 2016-03-23 | 中国华能集团清洁能源技术研究院有限公司 | System and method for recycling compression heat of hydrogen gas produced by water electrolysis |
| CN106119885A (en) * | 2016-07-26 | 2016-11-16 | 扬州中电制氢设备有限公司 | A kind of aqueous slkali electrolysis hydrogen production device and hydrogen production process |
| CN108699713A (en) * | 2016-01-04 | 2018-10-23 | 法国电力公司 | Prepare the system of hydrogen and relevant method |
| CN111748822A (en) * | 2020-06-04 | 2020-10-09 | 同济大学 | Comprehensive heat management system of large alkaline electrolyzed water hydrogen production device |
| CN113137783A (en) * | 2021-05-17 | 2021-07-20 | 中国华能集团清洁能源技术研究院有限公司 | System and method for recycling hydrogen production waste heat of electrolyzed water by using heat pump |
| CN113151843A (en) * | 2021-04-27 | 2021-07-23 | 上海羿沣氢能科技有限公司 | Method and device for producing hydrogen by electrolyzing water step by step |
-
2022
- 2022-02-18 CN CN202210149734.0A patent/CN114481161A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043192Y (en) * | 2007-06-15 | 2008-04-02 | 哈尔滨机联氢能源装备制造有限公司 | Device for manufacturing hydrogen and oxygen by electrolyzing water in natural circulation of electrolytic solution |
| CN104694950A (en) * | 2015-03-20 | 2015-06-10 | 国家电网公司 | Solar optothermal coupled high-temperature water electrolysis hydrogen production system |
| CN204589321U (en) * | 2015-03-27 | 2015-08-26 | 淄博安泽特种气体有限公司 | Water electrolysis is utilized to prepare pure hydrogen and oxygen reclamation system |
| CN105420750A (en) * | 2015-12-10 | 2016-03-23 | 中国华能集团清洁能源技术研究院有限公司 | System and method for recycling compression heat of hydrogen gas produced by water electrolysis |
| CN108699713A (en) * | 2016-01-04 | 2018-10-23 | 法国电力公司 | Prepare the system of hydrogen and relevant method |
| CN106119885A (en) * | 2016-07-26 | 2016-11-16 | 扬州中电制氢设备有限公司 | A kind of aqueous slkali electrolysis hydrogen production device and hydrogen production process |
| CN111748822A (en) * | 2020-06-04 | 2020-10-09 | 同济大学 | Comprehensive heat management system of large alkaline electrolyzed water hydrogen production device |
| CN113151843A (en) * | 2021-04-27 | 2021-07-23 | 上海羿沣氢能科技有限公司 | Method and device for producing hydrogen by electrolyzing water step by step |
| CN113137783A (en) * | 2021-05-17 | 2021-07-20 | 中国华能集团清洁能源技术研究院有限公司 | System and method for recycling hydrogen production waste heat of electrolyzed water by using heat pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990571A (en) * | 2022-05-25 | 2022-09-02 | 中国联合重型燃气轮机技术有限公司 | Water electrolysis device |
| CN115094453A (en) * | 2022-06-29 | 2022-09-23 | 上海燃气工程设计研究有限公司 | Uninterrupted distributed water electrolysis hydrogen production device for storage |
| CN115747853A (en) * | 2022-11-21 | 2023-03-07 | 时代氢源(深圳)科技有限公司 | Multiple circulating cooling system of small hydrogen production equipment |
| CN117466365A (en) * | 2023-03-09 | 2024-01-30 | 中国科学院大连化学物理研究所 | Electrolytic water hydrogen production coupling sea water desalination system and method |
| CN117468026A (en) * | 2023-03-09 | 2024-01-30 | 中国科学院大连化学物理研究所 | System and method for co-production of hydrogen and pure water based on offshore wind power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114481161A (en) | Water electrolysis hydrogen production system and oxygen production subsystem | |
| Guo et al. | Comparison between hydrogen production by alkaline water electrolysis and hydrogen production by PEM electrolysis | |
| CN111748822A (en) | Comprehensive heat management system of large alkaline electrolyzed water hydrogen production device | |
| RU2670991C2 (en) | Electrolysis method and electrolysis apparatus | |
| CN111364052A (en) | Wide-power water electrolysis hydrogen production system and method | |
| US20130288143A1 (en) | Fuel cell using seawater electrolyzer, methods for producing caustic soda, ammonia, urea and pvc using the seawater electrolyzer and integrated system thereof | |
| CN113137783A (en) | System and method for recycling hydrogen production waste heat of electrolyzed water by using heat pump | |
| CN213013112U (en) | Comprehensive heat management system of large alkaline electrolyzed water hydrogen production device | |
| CN107129011A (en) | A kind of device and method of the high villaumite organic wastewater of electrolysis-ionic membrane coupling processing | |
| CN110273163A (en) | A kind of system and method for renewable energy Direct Electrolysis urea-containing waste water hydrogen manufacturing | |
| CN112320895A (en) | Device and method for producing methane by coupling printing and dyeing wastewater treatment through three-dimensional electrode | |
| CN111254455A (en) | Device and method for decomposing chlorate generated by side reaction of anode chamber of electrolytic cell in chlor-alkali production and related acid adding process | |
| WO2021056423A1 (en) | Water electrolysis hydrogen production and boiler oxygen-enriched combustion coupled system | |
| CN201901710U (en) | System for preparing sodium hypochlorite | |
| CN110344071B (en) | Electroreduction of CO2Apparatus and method | |
| CN101906640B (en) | Electrolytic method chlorine dioxide generator | |
| KR101528911B1 (en) | High efficiency continuous manufacturing method and apparatus of ammonium persulfate | |
| CN215062987U (en) | System for recycling waste heat of hydrogen production by water electrolysis by utilizing heat pump | |
| CN110484927A (en) | A kind of compact-sized electrolysis type ozone generator | |
| CN102605383A (en) | Method and device for hydrogen-circulating electrolysis and application of the method and device in production of aluminum oxide | |
| CN114000163A (en) | Salt-containing wastewater electrolytic hydrogen production system and working method thereof | |
| CN212895007U (en) | Synthesis system for preparing hydrogen, chlorine, caustic soda and hydrochloric acid by utilizing wind power electric energy | |
| CN210122593U (en) | Peak shaving system for caustic soda production by using electrolysis bath of nuclear power station | |
| CN113388849A (en) | Hydrochloric acid electrolyzer by ion-exchange membrane method | |
| CN107082451A (en) | A kind of method that metatungstic acid sodium solution is prepared based on bipolar membrane electrodialysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |