CN214422763U - Water electrolysis hydrogen production pure oxygen recycle device - Google Patents
Water electrolysis hydrogen production pure oxygen recycle device Download PDFInfo
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- CN214422763U CN214422763U CN202120497337.3U CN202120497337U CN214422763U CN 214422763 U CN214422763 U CN 214422763U CN 202120497337 U CN202120497337 U CN 202120497337U CN 214422763 U CN214422763 U CN 214422763U
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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 discloses a water electrolysis hydrogen manufacturing pure oxygen recycle device, oxygen that comes from water electrolysis hydrogen manufacturing device carries to oxygen purification device after passing through air cooler cooling dewatering, oxygen purification device includes the dehydrogenator, cooling condenser, catch water and gas filter, palladium catalyst after the heating makes oxygen and contained hydrogen reaction generate water and reach the purpose of getting rid of hydrogen in the dehydrogenator, cool off oxygen through cooling condenser again, moisture condensation back, get rid of moisture through catch water and obtain 99.99% pure oxygen, the oxygen part is carried to waste water biochemical device and is carried out the pure oxygen aeration after the purification, the remainder is sent to oxygen drying device and is further detached moisture, reduce the pure oxygen dew point, then get into the pure oxygen buffer tank, send into ozone generator preparation ozone after adjusting the pure oxygen pressure. The utility model discloses simple structure retrieves the oxygen of water electrolysis hydrogen manufacturing evacuation, is used for waste water treatment system preparation high-purity ozone after the purification, has realized the high-efficient recycle of resource.
Description
Technical Field
The utility model belongs to the technical field of oxygen recycle device, concretely relates to water electrolysis hydrogen production pure oxygen recycle device.
Background
In a chlor-alkali production system, chlorine and hydrogen generated by electrolyzing a sodium chloride aqueous solution are combusted in a synthesis furnace to generate hydrogen chloride, the production process requires excessive hydrogen, the molar ratio of the hydrogen to the chlorine is 1:1.05-1.1, and the influence of over-chlorination of the generated hydrogen chloride gas on the subsequent VCM conversion process is prevented, but the molar ratio of the hydrogen and the chlorine generated by electrolyzing the sodium chloride aqueous solution is 1:1, so a water electrolysis hydrogen production device is usually required to be added to match the consumption of extra hydrogen. 2 parts of hydrogen and 1 part of oxygen are generated in the water electrolysis process, the hydrogen is stored for hydrogen chloride synthesis, but the generated high-purity oxygen is not recycled and is directly discharged to the air, so that the waste of resources is caused.
In the production process of polyvinyl chloride, the mother liquor generated by a polymerization device has high content of organic matters, large discharge amount and low comprehensive utilization rate. Can be used as pure water for recycling after advanced treatment through the steps of biochemical treatment, precise adsorption and filtration, ozone oxidation, activated carbon adsorption and novel anion and cation exchange. Ozone oxidation uses ozone that is typically produced using air or oxygen, but the concentration of ozone produced from air is relatively low, while the concentration of ozone produced using pure oxygen is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water electrolysis hydrogen production pure oxygen recycle device solves the direct emission of the pure oxygen that current water electrolysis hydrogen production device produced, problem that the resource can not high-efficiently utilize.
The utility model discloses the technical scheme who adopts is, a water electrolysis hydrogen production pure oxygen recycle device, including connecting the air cooler behind water electrolysis hydrogen production device, air cooler has connected gradually oxygen purification device, oxygen drying device, pure oxygen buffer tank and ozone generator, and oxygen purification device's output still communicates waste water biochemical device, and waste water biochemical device uses the oxygen after the partial purification to aerate waste water.
The oxygen purification device comprises a dehydrogenator, a cooling condenser, a steam-water separator and a gas filter which are connected in sequence; the dehydrogenator contains a palladium catalyst, oxygen from the air cooler and a small amount of hydrogen contained in the oxygen are subjected to catalytic reaction by the heated palladium catalyst to generate water so as to achieve the purpose of removing the hydrogen, and the cooling condenser is used for cooling the oxygen from which the hydrogen is removed by the dehydrogenator to realize moisture condensation; the steam-water separator is used for removing the water condensed by the cooling condenser so as to obtain the pure oxygen with the purity of 99.99 percent.
The utility model is also characterized in that,
the oxygen drying device is used for drying the oxygen purified by the oxygen purifying device, further removing moisture and reducing the dew point of the pure oxygen.
The pure oxygen buffer tank is used for adjusting the pressure of the pure oxygen dried by the oxygen drying device and then sending the pure oxygen into the ozone generator.
The bottom of the pure oxygen buffer tank is connected with the output end of the oxygen drying device through a pipeline, and the top of the pure oxygen buffer tank is connected with the input end of the ozone generator through a pipeline.
The temperature in the air cooler is 10-40 ℃.
The oxygen drying device comprises a freeze dryer which can reduce the dew point of pure oxygen to-60 ℃.
An output port of the pure oxygen buffer tank is provided with an automatic control valve.
The utility model has the advantages that:
the utility model discloses a water electrolysis hydrogen manufacturing pure oxygen recycle device, water electrolysis hydrogen manufacturing pure oxygen recycle device reasonable in design, simple structure, the oxygen of recovering water electrolysis hydrogen manufacturing in-process evacuation is used for waste water treatment system preparation high-purity ozone after the purification, has realized the high-efficient recycle of resource.
Drawings
FIG. 1 is a schematic structural view of the pure oxygen recycling device for hydrogen production by water electrolysis of the present invention;
in the figure, 1, an air cooler, 2, an oxygen purification device, 3, an oxygen drying device, 4, a pure oxygen buffer tank and 5, an ozone generator.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a water electrolysis hydrogen production pure oxygen recycle device structure, as shown in figure 1, comprising an air cooler 1 connected behind the water electrolysis hydrogen production device, wherein the air cooler 1 is connected with an oxygen purification device 2, an oxygen drying device 3, a pure oxygen buffer tank 4 and an ozone generator 5 in sequence; the output end of the oxygen purification device 2 is also communicated with a wastewater biochemical device, and the wastewater biochemical device uses part of purified oxygen to aerate wastewater.
The oxygen purification device 2 comprises a dehydrogenator, a cooling condenser, a steam-water separator and a gas filter which are connected in sequence; the dehydrogenator contains a palladium catalyst, oxygen from the air cooler 1 and a small amount of hydrogen contained in the oxygen are subjected to catalytic reaction by the heated palladium catalyst to generate water so as to achieve the purpose of removing the hydrogen, and the cooling condenser is used for cooling the oxygen from which the hydrogen is removed by the dehydrogenator to realize moisture condensation; the steam-water separator is used for removing the water condensed by the cooling condenser so as to obtain the pure oxygen with the purity of 99.99 percent.
The oxygen drying device 3 is used for drying the oxygen purified by the oxygen purifying device 2, further removing moisture and reducing the dew point of pure oxygen.
The pure oxygen buffer tank 4 is used for adjusting the pressure of the pure oxygen dried by the oxygen drying device 3 and then sending the pure oxygen into the ozone generator 5.
The bottom of the pure oxygen buffer tank 4 is connected with the output end of the oxygen drying device 3 through a pipeline, and the top of the pure oxygen buffer tank 4 is connected with the input end of the ozone generator 5 through a pipeline.
The temperature in the air cooler 1 is 10-40 ℃.
The oxygen drying device 3 comprises a freeze dryer capable of lowering the dew point of pure oxygen to-60 ℃.
An output port of the pure oxygen buffer tank 4 is provided with an automatic control valve.
The utility model relates to a water electrolysis hydrogen production pure oxygen recycle device's concrete application method as follows:
oxygen from a water electrolysis hydrogen production device (wherein the purity of the oxygen is more than or equal to 98.5 percent, the content of hydrogen is less than 0.5 percent, and the pressure is 1.5-1.6MPa) passes through an air cooler 1, the oxygen is cooled to 10-40 ℃ by utilizing ambient air to remove water, and then the oxygen is conveyed to an oxygen purification device 2 through a pipeline, wherein the oxygen purification device comprises a dehydrogenator, a cooling condenser, a steam-water separator and a gas filter. Heating oxygen in a dehydrogenating device to 140 ℃ by a palladium catalyst to enable the oxygen to react with the contained hydrogen to generate water to remove the hydrogen, cooling the oxygen to 50 ℃ by a cooling condenser, and removing water by a steam-water separator to obtain pure oxygen with the purity of more than or equal to 99.99% and the hydrogen content of less than 50 ppm; part of the purified oxygen is conveyed to a wastewater biochemical device for pure oxygen aeration, the rest oxygen is further dehydrated through an oxygen drying device 3, the oxygen drying device 3 utilizes a freezing type dryer to reduce the dew point of the pure oxygen to-60 ℃, the oxygen enters a pure oxygen buffer tank 4, the output port of the pure oxygen buffer tank 4 adjusts the pressure of the pure oxygen to 0.08-0.12MPa through an automatic control valve and then sends the pure oxygen to an ozone generator 5 for preparing ozone, and the prepared ozone is sent to an ozone reactor to participate in the wastewater ozone oxidation reaction.
Claims (8)
1. The pure oxygen recycling device for hydrogen production by water electrolysis is characterized by comprising an air cooler (1) connected to a hydrogen production device by water electrolysis, wherein the air cooler (1) is sequentially connected with an oxygen purification device (2), an oxygen drying device (3), a pure oxygen buffer tank (4) and an ozone generator (5); the output end of the oxygen purification device (2) is also communicated with a wastewater biochemical device, and the wastewater biochemical device uses partially purified oxygen to aerate wastewater.
2. The device for recycling pure oxygen through hydrogen production by water electrolysis according to claim 1, characterized in that the oxygen purification device (2) comprises a dehydrogenator, a cooling condenser, a steam-water separator and a gas filter which are connected in sequence; the dehydrogenation device contains a palladium catalyst, oxygen from the air cooler (1) and a small amount of hydrogen contained in the oxygen are subjected to catalytic reaction by the heated palladium catalyst to generate water so as to achieve the purpose of removing the hydrogen, and the cooling condenser is used for cooling the oxygen from which the hydrogen is removed by the dehydrogenation device to realize moisture condensation; the steam-water separator is used for removing moisture condensed by the cooling condenser so as to obtain 99.99% pure oxygen.
3. The device for recycling pure oxygen generated by hydrogen production through water electrolysis according to claim 1, characterized in that the oxygen drying device (3) is used for drying the oxygen purified by the oxygen purifying device (2) to further remove moisture and reduce the dew point of the pure oxygen.
4. The device for recycling pure oxygen generated by hydrogen production through water electrolysis according to claim 1, characterized in that the pure oxygen buffer tank (4) is used for adjusting the pressure of the pure oxygen dried by the oxygen drying device (3) and then sending the pure oxygen to the ozone generator (5).
5. The device for recycling pure oxygen generated by hydrogen production through water electrolysis according to claim 1, characterized in that the bottom of the pure oxygen buffer tank (4) is connected with the output end of the oxygen drying device (3) through a pipeline, and the top of the pure oxygen buffer tank (4) is connected with the input end of the ozone generator (5) through a pipeline.
6. The apparatus for recycling pure oxygen from hydrogen production by water electrolysis according to claim 1, characterized in that the temperature in the air cooler (1) is 10-40 ℃.
7. The apparatus for recycling pure oxygen generated by hydrogen production through water electrolysis according to claim 2, characterized in that the oxygen drying device (3) comprises a freeze dryer capable of lowering the dew point of pure oxygen to-60 ℃.
8. The device for recycling pure oxygen generated by hydrogen production through water electrolysis according to claim 1, characterized in that an output port of the pure oxygen buffer tank (4) is provided with an automatic control valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120497337.3U CN214422763U (en) | 2021-03-09 | 2021-03-09 | Water electrolysis hydrogen production pure oxygen recycle device |
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| CN202120497337.3U CN214422763U (en) | 2021-03-09 | 2021-03-09 | Water electrolysis hydrogen production pure oxygen recycle device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000171A (en) * | 2021-10-21 | 2022-02-01 | 中国华能集团清洁能源技术研究院有限公司 | Electrolytic hydrogen production system and method with hydrogen-oxygen recombination reactor |
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2021
- 2021-03-09 CN CN202120497337.3U patent/CN214422763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000171A (en) * | 2021-10-21 | 2022-02-01 | 中国华能集团清洁能源技术研究院有限公司 | Electrolytic hydrogen production system and method with hydrogen-oxygen recombination reactor |
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