CN211872099U - Offshore wind power hydrogen production system based on electro-adsorption desalination technology - Google Patents
Offshore wind power hydrogen production system based on electro-adsorption desalination technology Download PDFInfo
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- CN211872099U CN211872099U CN202020437914.5U CN202020437914U CN211872099U CN 211872099 U CN211872099 U CN 211872099U CN 202020437914 U CN202020437914 U CN 202020437914U CN 211872099 U CN211872099 U CN 211872099U
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Abstract
The utility model discloses an offshore wind power hydrogen production system based on electro-adsorption desalination technology, the output of an offshore wind power plant is connected with the input of a power distributor, the output of the power distributor is connected with the input of a power grid and an AC/DC rectifier, the output of the AC/DC rectifier is connected with the power interface of an electrolytic hydrogen production device, the hydrogen outlet of the electrolytic hydrogen production device is communicated with a hydrogen storage system, the oxygen outlet of the electrolytic hydrogen production device is communicated with the inlet of an oxygen separator, the oxygen outlet of the oxygen separator is communicated with an oxygen storage tank, the water outlet of the oxygen separator is communicated with the inlet of a drainage storage tank, the outlet of the drainage storage tank and a seawater input pipeline are communicated with the inlet of the electro-adsorption desalination device, the outlet of the electro-adsorption desalination device is communicated with the inlet of a water replenishing storage tank, the outlet of the water, the system can combine seawater desalination and electrolytic hydrogen production to realize offshore and on-site consumption of renewable wind power.
Description
Technical Field
The utility model belongs to hydrogen energy field relates to a marine wind power hydrogen manufacturing system based on electro-adsorption desalination technology.
Background
With the increasing problems of climate change and global warming, countries in the world begin to actively reduce carbon emission, reduce the use ratio of fossil energy, and develop clean and renewable energy. China also speeds up the step of energy structure transformation, and in recent years, renewable energy power generation mainly based on wind power and photovoltaic is developed rapidly. As the land high-quality wind power plants are reduced day by day, the offshore wind power development in China gradually enters an acceleration period. However, the back of the rapid development is accompanied by the same embarrassment faced by offshore wind power industry of each country, and the delayed power grid construction speed cannot meet the rapidly expanded power delivery requirement, so that the phenomena of large-scale wind abandonment and electricity abandonment can be caused finally. The difficult problems can be effectively solved by changing the single application mode of the outgoing grid connection and directly coupling the offshore wind power and the high-energy-carrying industry and combining the grid connection with the energy storage. Among them, hydrogen energy has the characteristics of cleanness and high efficiency, and is considered as the most potential energy carrier in the future. The hydrogen production by the offshore wind power can absorb the abandoned wind and the abandoned electricity on site, balance the power supply and demand relationship in the power grid and provide a feasible idea for the development of the offshore wind power.
The current commercial hydrogen production technology comprises alkaline water electrolysis hydrogen production and proton exchange membrane water electrolysis hydrogen production, and the two technologies both need to use pure water as an electrolysis raw material. Offshore wind farms lack a supply of pure water, limiting the application of electrolytic hydrogen production technology. Seawater desalination such as reverse osmosis and electrodialysis can produce pure water on site, but the high equipment investment and complex process flow of the seawater desalination can greatly increase the hydrogen production cost and weaken the economic benefit of hydrogen energy storage. The technology for producing hydrogen by directly electrolyzing seawater can effectively avoid the problem of pure water supply, but the seawater contains high-concentration Cl-、Mg2+、Ca2+Can lead to serious hydrogen plant corrosion and efficiency degradation problems. The electric adsorption technology can adsorb and separate ions in seawater under the action of an electric field force, so that product water with lower concentration is obtained. The treatment process has almost no requirement on the quality of raw water, the stability of the circular operation is good, and the low-energy consumption seawater desalination can be realized under the condition of applying lower external voltage. The diluted seawater desalted by electro-adsorption is used as the raw material for producing hydrogen by electrolysis, so that the technical problem of producing hydrogen by directly electrolyzing seawater can be effectively solved.
At present, the wind power hydrogen production technology is mainly used for abandoned wind absorption of onshore wind power plants and is limited by the problem of pure water supply, and the hydrogen production technology aiming at hydrogen energy storage of offshore wind power plants is not reported so far. Therefore, the offshore wind power hydrogen production system based on the electro-adsorption desalination technology is needed to be developed in the field, and the offshore wind power hydrogen production system combines seawater desalination and electrolytic hydrogen production to realize offshore and on-site consumption of renewable wind power.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a marine wind power hydrogen production system based on electrosorption desalination, this system can combine together sea water desalination and electrolysis hydrogen production and realize the offshore of wind-powered electricity generation of can regenerating and consume on the spot.
In order to achieve the above purpose, the offshore wind power hydrogen production system based on the electro-adsorption desalination technology of the utility model comprises an offshore wind power plant, a power distributor, a power grid, an AC/DC rectifier, an electrolysis hydrogen production device, a hydrogen separator, a hydrogen storage tank, an oxygen separator, an oxygen storage tank, a drainage storage tank, a seawater input pipeline, an electro-adsorption desalination device and a water replenishing storage tank;
the output end of the offshore wind power generation field is connected with the input end of the power distributor, the output end of the power distributor is connected with the power grid and the input end of the AC/DC rectifier, the output end of the AC/DC rectifier is connected with the power supply interface of the electrolytic hydrogen production device, the hydrogen outlet of the electrolytic hydrogen production device is communicated with the hydrogen storage tank through the hydrogen separator, the oxygen outlet of the electrolytic hydrogen production device is communicated with the inlet of the oxygen separator, the oxygen outlet of the oxygen separator is communicated with the oxygen storage tank, the water outlet of the oxygen separator is communicated with the inlet of the drainage storage tank, the outlet of the drainage storage tank and the seawater input pipeline are communicated with the inlet of the electro-adsorption desalination device, the outlet of the electro-adsorption desalination device is communicated with the inlet of the water replenishing storage.
The electrolytic hydrogen production device further comprises a cooler and a circulating pump, wherein an inlet of the circulating pump is communicated with a water outlet of the oxygen separator, and an outlet of the circulating pump is communicated with a water inlet of the electrolytic hydrogen production device through the cooler.
The electrolytic hydrogen production device is an anion exchange membrane electrolytic cell, and a diaphragm in the electrolytic hydrogen production device is OH containing quaternary ammonium, imidazole or pyridine-A selective exchange membrane; the anode and the cathode in the electrolytic hydrogen production device take a titanium mesh, a titanium corrugated plate, foamed nickel or foamed copper as a substrate, and an active coating is introduced on the surface of the substrate; the cathode, the diaphragm and the anode are in close contact to form a zero-spacing electrolytic cell structure.
The electrode in the electro-adsorption desalting device is in a plate shape or a felt shape, polytetrafluoroethylene mesh cloth is paved on the surface of the electrode, and the material of the electrode is one or a plurality of active carbon, carbon fiber and carbon nano tube.
The utility model discloses following beneficial effect has:
marine wind power hydrogen production system based on electro-adsorption desalination technology when concrete operation, the electric quantity that marine wind power generation field produced is under the prerequisite that satisfies the electric wire netting dispatch, with unnecessary electricity in defeated for electrolysis hydrogen plant through AC/DC rectifier, through electrolysis hydrogen plant electricityThe water is decomposed to generate hydrogen and oxygen, the offshore and local consumption of renewable wind power is realized, and the problem of the consumption of wind abandoning and electricity abandoning of an offshore wind power plant is solved. In addition, the seawater output by the seawater input pipeline enters the electrolytic hydrogen production device for electrolytic desalination treatment, and the diluted seawater after electrolytic desalination treatment enters the electrolytic hydrogen production device, so that the combination of seawater desalination and electrolytic hydrogen production is realized, the dependence of the traditional electrolytic hydrogen production on pure water is avoided, the investment of a seawater desalination part in the traditional hydrogen production process is saved, and the fixed investment of offshore wind power hydrogen production projects is greatly reduced. In addition, it is noted that the utility model adopts the electro-adsorption desalination technology to reduce Cl in seawater in the hydrogen production system-The concentration is favorable for inhibiting the corrosion of the catalyst and the polar plate, the service life of the hydrogen production system is prolonged, and simultaneously, the Ca in the seawater is effectively removed2+And Mg2+And hardness ions are prevented from being deposited on the surface of the electrode, and the energy consumption and the cost of hydrogen production can be obviously reduced.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Wherein, 1 is an offshore wind power plant, 2 is a power distributor, 3 is a power grid, 4 is an AC/DC rectifier, 5 is an electrolytic hydrogen production device, 6 is a hydrogen separator, 7 is a hydrogen storage tank, 8 is an oxygen separator, 9 is an oxygen storage tank, 10 is a circulating pump, 11 is a cooler, 12 is a drainage storage tank, 13 is an electro-adsorption desalination device, and 14 is a water replenishing storage tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the offshore wind power hydrogen production system based on electro-adsorption desalination technology of the present invention includes an offshore wind farm 1, a power distributor 2, a power grid 3, an AC/DC rectifier 4, an electrolytic hydrogen production apparatus 5, a hydrogen separator 6, a hydrogen storage tank 7, an oxygen separator 8, an oxygen storage tank 9, a drainage storage tank 12, a seawater input pipeline, an electro-adsorption desalination apparatus 13, and a water supplement storage tank 14; the output end of the offshore wind power generation field 1 is connected with the input end of the power distributor 2, the output end of the power distributor 2 is connected with the power grid 3 and the input end of the AC/DC rectifier 4, the output end of the AC/DC rectifier 4 is connected with the power supply interface of the electrolytic hydrogen production device 5, the hydrogen outlet of the electrolytic hydrogen production device 5 is communicated with the hydrogen storage tank 7 through the hydrogen separator 6, the oxygen outlet of the electrolytic hydrogen production device 5 is communicated with the inlet of the oxygen separator 8, the oxygen outlet of the oxygen separator 8 is communicated with the oxygen storage tank 9, the water outlet of the oxygen separator 8 is communicated with the inlet of the drainage storage tank 12, the outlet of the drainage storage tank 12 and a seawater input pipeline are communicated with the inlet of the electro-adsorption desalination device 13, the outlet of the electro-adsorption desalination device 13 is communicated with the inlet of the water replenishing storage tank 14.
The utility model also comprises a cooler 11 and a circulating pump 10, wherein the inlet of the circulating pump 10 is communicated with the water outlet of the oxygen separator 8, and the outlet of the circulating pump 10 is communicated with the water inlet of the electrolytic hydrogen production device 5 through the cooler 11.
The utility model discloses a concrete operation process does:
the offshore wind power generation field 1 generates power in real time, when the electric quantity generated by the offshore wind power generation field 1 is less than or equal to the scheduled electric quantity of the power grid 3, the electricity output by the offshore wind power generation field 1 is completely transmitted to the power grid 3 through the power divider 2, when the electric quantity generated by the offshore wind power generation field 1 is greater than the scheduled electric quantity of the power grid 3, the electricity generated by the offshore wind power generation field 1 is transmitted to the electrolytic hydrogen production device 5 through the power divider 2 and the AC/DC rectifier 4 on the premise of meeting the scheduling of the power grid 3, the electrolytic hydrogen production device 5 electrolyzes water to generate hydrogen and oxygen, wherein the hydrogen enters the hydrogen storage system for storage, the hydrogen enters the hydrogen separator 6 for separation, the separated oxygen enters the oxygen storage tank 9, the separated hydrogen production water enters the drainage storage tank 12, the seawater output by the seawater input pipeline and the water output by the drainage storage tank 12 converge and then enters the electrolytic desalination device 5, the diluted seawater after the electrolytic desalination enters the water replenishing storage tank 14, and the diluted seawater output by the water replenishing storage tank 14 enters the electrolytic hydrogen production device 5.
The electro-adsorption desalination device 13 carries out desalination treatment on seawater, the obtained diluted seawater is stored in a water supplementing storage tank 14 and is used as a raw material water source of the electrolytic hydrogen production device 5, the system automatically controls the seawater supplementing amount and the discharge amount according to the conductivity of the circulating seawater, when the conductivity of the circulating seawater passing through the electrolytic cell is higher than a set value, the system starts to discharge water to a water discharging storage tank 12, and then the diluted seawater is supplemented into the system from the water supplementing storage tank 14; and when the conductivity of the circulating seawater passing through the electrolytic cell is lower than a set value, stopping supplementing water.
The electrolytic hydrogen production device 5 is an anion exchange membrane electrolytic cell, and a diaphragm in the electrolytic hydrogen production device 5 is OH containing quaternary ammonium, imidazole and pyridine-A selective exchange membrane; the anode and the cathode in the electrolytic hydrogen production device 5 take a titanium mesh, a titanium corrugated plate, foamed nickel or foamed copper as a substrate, and an active coating is introduced on the surface; the cathode, the diaphragm and the anode are in close contact to form a zero-spacing electrolytic cell structure.
The electrodes in the electro-adsorption desalination device 13 are plate-shaped or felt-shaped, polytetrafluoroethylene mesh cloth is laid on the surfaces of the electrodes, and the electrodes are made of one or a plurality of active carbon, carbon fiber and carbon nano tubes. The polytetrafluoroethylene mesh cloth is laid on the surface of the electrode, the turbulence degree of seawater is increased, the ions are promoted to be gathered in double electric layers on the surface of the electrode, the seawater flows between the negative plate and the positive plate, and Cl is formed-Is gathered on the surface of the anode under the action of an electric field, Na+、Mg2+And Ca2+Gather on the cathode surface to realize seawater desalination and obtain diluted seawater with obviously reduced ion concentration and conductivity, and Cl in seawater-The concentration is reduced, which is beneficial to the corrosion prevention of the electrolytic bath; mg (magnesium)2+、Ca2+The concentration is reduced, which is beneficial to inhibiting the generation of the sediment on the surface of the electrode and improving the electrolysis efficiency.
The electro-adsorption desalination device 13 has two operating states during operation: namely adsorption desalination and desorption pollution discharge; when the removal rate is higher than a set value, the device keeps the working state of adsorption desalination; when the removal rate is lower than a set value, stopping supplying power to the electrode, and performing desorption and pollution discharge; the desorption pollution discharge time is a fixed value, the polar plate is continuously electrified after the pollution discharge is finished, and the electro-adsorption desalination device 13 is recovered to the working state of adsorption desalination.
Claims (4)
1. An offshore wind power hydrogen production system based on an electro-adsorption desalination technology is characterized by comprising an offshore wind power plant (1), a power distributor (2), a power grid (3), an AC/DC rectifier (4), an electrolytic hydrogen production device (5), a hydrogen separator (6), a hydrogen storage tank (7), an oxygen separator (8), an oxygen storage tank (9), a drainage storage tank (12), a seawater input pipeline, an electro-adsorption desalination device (13) and a water replenishing storage tank (14);
the output end of the offshore wind power generation field (1) is connected with the input end of a power distributor (2), the output end of the power distributor (2) is connected with the input ends of a power grid (3) and an AC/DC rectifier (4), the output end of the AC/DC rectifier (4) is connected with a power interface of an electrolytic hydrogen production device (5), a hydrogen outlet of the electrolytic hydrogen production device (5) is communicated with a hydrogen storage tank (7) through a hydrogen separator (6), an oxygen outlet of the electrolytic hydrogen production device (5) is communicated with an inlet of an oxygen separator (8), an oxygen outlet of the oxygen separator (8) is communicated with an oxygen storage tank (9), a water outlet of the oxygen separator (8) is communicated with an inlet of a drainage storage tank (12), an outlet of the drainage storage tank (12) and a seawater input pipeline are communicated with an inlet of an electro-adsorption desalination device (13), an outlet of the electro-adsorption desalination device (13) is communicated with an inlet of a water replenishing, the outlet of the water replenishing storage tank (14) is communicated with the inlet of the electrolytic hydrogen production device (5).
2. Offshore wind power hydrogen production system based on electro-adsorption desalination technology according to claim 1, characterized by further comprising a cooler (11) and a circulation pump (10), wherein the inlet of the circulation pump (10) is communicated with the water outlet of the oxygen separator (8), and the outlet of the circulation pump (10) is communicated with the water inlet of the electrolytic hydrogen production device (5) via the cooler (11).
3. Offshore wind power hydrogen production system based on electro-adsorption desalination technology according to claim 1, characterized in that the hydrogen production device (5) is an anion exchange membrane electrolyzer, and the membrane in the hydrogen production device (5) is OH containing quaternary ammonium, imidazole or pyridine-A selective exchange membrane; the anode and the cathode in the electrolytic hydrogen production device (5) take a titanium mesh, a titanium corrugated plate, foamed nickel or foamed copper as a substrate, and an active coating is introduced on the surface; the cathode, the diaphragm and the anode are in close contact to form a zero-spacing electrolytic cell structure.
4. Offshore wind power hydrogen production system based on electro-adsorption desalination technology according to claim 1, characterized in that the electrodes in the electro-adsorption desalination device (13) are plate-shaped or felt-shaped, the surface of the electrodes is coated with polytetrafluoroethylene mesh cloth, and the electrodes are made of one or more of activated carbon, carbon fiber and carbon nanotubes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020437914.5U CN211872099U (en) | 2020-03-30 | 2020-03-30 | Offshore wind power hydrogen production system based on electro-adsorption desalination technology |
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| CN202020437914.5U CN211872099U (en) | 2020-03-30 | 2020-03-30 | Offshore wind power hydrogen production system based on electro-adsorption desalination technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200633A (en) * | 2021-05-28 | 2021-08-03 | 东方电气集团东方锅炉股份有限公司 | Method and system for producing hydrogen by using landfill leachate |
| WO2021197308A1 (en) * | 2020-03-30 | 2021-10-07 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power hydrogen production system and method based on electro-adsorption desalination technology |
| WO2023030551A1 (en) * | 2021-09-01 | 2023-03-09 | 深圳大学 | Seawater non-desalination in-situ direct electrolysis hydrogen production method, apparatus, and system |
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2020
- 2020-03-30 CN CN202020437914.5U patent/CN211872099U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021197308A1 (en) * | 2020-03-30 | 2021-10-07 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power hydrogen production system and method based on electro-adsorption desalination technology |
| CN113200633A (en) * | 2021-05-28 | 2021-08-03 | 东方电气集团东方锅炉股份有限公司 | Method and system for producing hydrogen by using landfill leachate |
| WO2023030551A1 (en) * | 2021-09-01 | 2023-03-09 | 深圳大学 | Seawater non-desalination in-situ direct electrolysis hydrogen production method, apparatus, and system |
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