CN222923256U - Membraneless electrocatalytic continuous reaction mechanism and PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device - Google Patents
Membraneless electrocatalytic continuous reaction mechanism and PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device Download PDFInfo
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- CN222923256U CN222923256U CN202421599027.2U CN202421599027U CN222923256U CN 222923256 U CN222923256 U CN 222923256U CN 202421599027 U CN202421599027 U CN 202421599027U CN 222923256 U CN222923256 U CN 222923256U
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Abstract
The device comprises a raw material mechanism, a continuous reaction mechanism, a temperature control mechanism and a hydrogen transportation mechanism, wherein the raw material mechanism comprises an electrolyte storage tank and a pump, the continuous reaction mechanism comprises a feed inlet, a first discharge port, a second discharge port and at least one electrode unit connected with a direct-current power supply, the temperature control mechanism comprises a temperature control module and a heating sheet, the hydrogen transportation mechanism comprises a water-gas separator and a pump, the reaction temperature is controlled by the heating sheet, electrolyte in the raw material mechanism is upgraded and regenerated into a high-value-added product through a catalyst electrode of the electrode unit, hydrogen is generated, the generated hydrogen is collected through the hydrogen transportation mechanism, and the high-value-added product is recovered through treatment of the electrolyte after reaction.
Description
Technical Field
The utility model relates to the technical field of organic solid waste treatment and recycling, in particular to a membraneless electrocatalytic continuous reaction mechanism and a PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device formed by the membraneless electrocatalytic continuous reaction mechanism.
Background
PET plastics are produced in about 7000 ten thousand tons per year worldwide, accounting for about 13% of the total plastic yield, and growing at a rate of 4.5% per year, and are widely used in the beverage packaging, food packaging, textile and other industries. Due to the durability and decomposition resistance of PET plastics, the waste PET plastics are required to be completely degraded in nature for about 16-48 years, and the waste PET plastics have serious environmental pollution and resource waste due to the large usage amount, short service cycle and improper post-treatment. Therefore, the method has important value for upgrading and reconstructing the PET waste plastics from the standpoint of environmental protection or resource recycling.
Electrocatalytic is driven by an external electric field, and the reaction activation energy is reduced through the electronic interaction between the catalyst and electrolyte molecules, so that the process of molecular conversion is accelerated. Wherein, the anode generates oxidation reaction and the cathode generates reduction reaction. The technology is used for upgrading and regenerating the PET waste plastics by the university section of Qinghai Seisakusho for the first time in 2021 and belongs to the field of high-added-value chemicals, and a new way (Nat. Commun.2021,12,4679) is provided for solving the problems of waste plastics pollution and resource utilization. Recently, by means of the structural design of catalysts, the university of China academy of sciences Chen Yong team (Chem.Commun.2021, 57,12595;Angew.Chem.Int.Edit.2023,62,e202300094) and the Shanghai university of transportation Zhao Yixin team (J.Phys.chem.Lett.2022, 13,622.) respectively obtain high-value-added chemicals of glycolic acid, carbonate and formate through different reaction paths and are coupled with cathode H 2, and the process can synthesize high-value-added chemicals, and can also greatly reduce the energy consumption of the electrolytic water H 2 by replacing slow anodic Oxygen Evolution Reaction (OER) in the electrolytic water process.
However, the existing reported electrocatalytic PET waste plastic upgrading and regenerating coupling electrolytic water hydrogen production process is generally carried out under the condition of (1) an intermittent three-electrode system, but has low concentration of reaction substrates and small reaction volume, and is difficult to be practically applied, and (2) the process is carried out in a reaction device added with a proton or anion exchange membrane, but has high cost of the exchange membrane, and electrolyte can react with CO 2 in the air to form carbonate which is insoluble in water under alkaline conditions, so that a diaphragm layer is blocked, the normal operation of the reaction is hindered, and the performance of an electrolytic tank is greatly reduced.
Chinese patent literature (publication No. CN 218539843U) discloses a device for electrocatalytic oxidation of biomass derivatives, which can not meet the high-temperature operation requirement of 80-90 ℃ in actual industrial conditions and can not perform coupling hydrogen production reaction although continuous electrocatalytic oxidation reaction functions of biomass derivatives are realized.
The Chinese patent document (publication No. CN 114959749A) discloses a method for preparing glycolate by electrocatalytic glycol or electrocatalytic reforming of waste plastic PET, and the used flow electrolytic cell has a simple structure, the effective area of the catalyst electrode is smaller, and the high-temperature operation requirement in the actual industrial condition cannot be met.
Therefore, to realize the industrial application of the electrocatalytic PET waste plastic upgrading and regenerating coupling hydrogen production process, the reaction system must be enlarged, the reaction rate is improved, the equipment cost is reduced, the generation of non-Faraday products is reduced, the product selectivity is improved, and the high-current long-time stable high-yield production is realized.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a membraneless electrocatalytic continuous reaction mechanism and a PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device, and solves the problems that the current electrocatalytic coupling hydrogen production device cannot continuously produce, has low concentration of reaction substrates, small reaction volume, high cost of the exchange membrane, easy blockage, low selectivity of target products and the like by adding a temperature control module, removing the exchange membrane and using a special catalyst electrode to control reaction conditions, thereby promoting the industrialized application of the electrocatalytic PET waste plastic upgrading and regenerating high-added-value chemical coupling hydrogen production process.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The membrane-free electrocatalytic continuous reaction mechanism comprises a shell, a feeding side shell plate and a discharging side shell plate are respectively arranged at two ends of the shell, a feeding port 21 is formed in the lower end of the feeding side shell plate, a first discharging port 22 is formed in the upper end of the discharging side shell plate, a second discharging port 23 is formed in the lower end of the discharging side shell plate, at least one group of electrode units 24 is arranged between the feeding side shell plate and the discharging side shell plate, and each group of electrode units 24 is connected with a direct-current power supply.
The first discharging hole 22 and the second discharging hole 23 are distributed on the discharging side shell plate in a diagonal line.
The electrode unit 24 includes an anode current collecting plate 241, an anode 242, a first gasket 243, a cathode 244, and a cathode current collecting plate 245, which are sequentially stacked, wherein the anode current collecting plate 241 is adjacent to the feed side shell, and the cathode current collecting plate 245 is adjacent to the discharge side shell.
The lower part of the anode collecting plate 241 is provided with a square through hole as an anode mixing cavity 2411, the upper part is provided with a square through hole as an anode discharging cavity 2412, the middle section of the anode collecting plate 241 between the anode mixing cavity 2411 and the anode discharging cavity 2412 forms an S-shaped coiled anode liquid flow channel 2413, and the liquid inlet and the liquid outlet of the anode liquid flow channel 2413 are arranged in a diagonal line and are respectively communicated with the anode mixing cavity 2411 and the anode discharging cavity 2412.
The cathode collecting plate 245 is provided with a square through hole at the lower part as a cathode mixing cavity 2451, a square through hole at the upper part as a cathode discharging cavity 2452, an S-shaped coiled cathode liquid flow channel 2453 is formed at the middle section of the cathode collecting plate 245 between the cathode mixing cavity 2451 and the cathode discharging cavity 2452, the liquid inlet and the liquid outlet of the cathode liquid flow channel 2453 are arranged in diagonal lines and are respectively communicated with the cathode mixing cavity 2451 and the cathode discharging cavity 2452, and when only one group of electrode units 24 are arranged or only one group of electrode units 24 are arranged, the cathode collecting plate 245 of the electrode unit 24 closest to the discharging side shell plate is provided with the square through hole at the upper part as the cathode discharging cavity 2452.
The anode 242 includes an anode conductive substrate on which an anode catalyst is supported.
The cathode 244 includes a cathode conductive substrate on which a cathode catalyst is supported.
The first gasket 243 is provided with three square through holes from bottom to top in sequence as a mixing chamber 2431, a reaction chamber 2432 and a discharging chamber 2433, and the two sides of the reaction chamber 2432 are covered with an anode 242 and a cathode 244.
The feed port 21 is in communication with the anode mixing chamber 2411, the mixing chamber 2431, and the cathode mixing chamber 2451 in sequence.
The anode discharge chamber 2412 is in communication with the discharge chamber 2433, the cathode discharge chamber 2452, and the first discharge port 22 in sequence.
The anode liquid flow channel 2413 is in turn in communication with the reaction chamber 2432 and the cathode liquid flow channel 2453.
The top of the anode current collecting plate 241 is provided with a convex anode wiring plate 2414, the top of the cathode current collecting plate 245 is provided with a convex cathode wiring plate 2454, the anode wiring plate 2414 is connected with the positive pole of the direct current power supply, the cathode wiring plate 2454 is connected with the negative pole of the direct current power supply, and the anode wiring plate 2414 and the cathode wiring plate 2454 are staggered.
A third gasket 247 is disposed between the anode current collecting plate 241 and the feed side case plate.
A fourth spacer 248 is also disposed between the anode 242 and the first spacer 243.
A fifth gasket 249 is further disposed between the cathode 244 and the first gasket 243.
The third gasket 247, the fourth gasket 248 and the fifth gasket 249 have the same structure as the first gasket 243.
A second gasket 246 is disposed between the cathode current collecting plate 245 and the discharge side shell plate, and a square through hole is formed in the second gasket 246 as a second discharge cavity 2461, and the thickness of the second gasket is greater than that of the first gasket 243.
The second discharging cavity 2461 is respectively communicated with the cathode discharging cavity 2452, the first discharging hole 22 and the second discharging hole 23.
When the electrode units 24 are multiple groups, a first spacer 243 is disposed between adjacent electrode units 24.
The material of the feeding side shell plate, the discharging side shell plate, the anode current collecting plate 241 and the cathode current collecting plate 245 is nickel, iron or titanium.
The thicknesses of the first gasket 243, the third gasket 247, the fourth gasket 248 and the fifth gasket 249 are all 0.02 cm-0.5 cm, and the materials are tetrafluoroethylene, silica gel, fluorine rubber, polyether-ether-ketone or rubber.
The distance between the anode current collecting plate 241 and the cathode current collecting plate 245 of the adjacent electrode units 24 is 0.02 cm-1 cm.
The anode 242 or cathode 244 has an area of not less than 50cm 2.
PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device based on the membraneless electrocatalytic continuous reaction mechanism comprises:
A raw material mechanism 1 for providing raw materials required for hydrogen production;
a continuous reaction mechanism 2 for continuously reacting the raw materials supplied from the raw material supply mechanism 1;
a temperature control mechanism 3 for controlling the temperature of the continuous reaction mechanism 2;
and the hydrogen transportation mechanism 4 is used for collecting the hydrogen prepared after the continuous reaction mechanism 2 reacts and recycling the waste after the reaction.
The raw material mechanism 1 comprises an electrolyte storage tank 11, an electrolyte feed pump 12 is arranged at a discharge port of the electrolyte storage tank 11, and the electrolyte feed pump 12 is communicated with a feed port 21 of the continuous reaction mechanism 2;
The temperature control mechanism 3 comprises a temperature control module 31, the temperature control module 31 is in control connection with a plurality of heating plates 32, and the heating plates 32 are covered on a feeding side shell plate and a discharging side shell plate of the continuous reaction mechanism 2;
The hydrogen transportation mechanism 4 comprises a water-gas separator 41, a water pump 42 is arranged in a liquid outlet hole of the water-gas separator 41, and the water pump 42 is communicated with the electrolyte storage tank 11 of the raw material mechanism 1;
The first discharge port 22 of the continuous reaction mechanism 2 is communicated with the water-gas separator 41 of the hydrogen transportation mechanism 4.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model adopts a gasket arrangement mode to replace a proton membrane, realizes that the PET waste plastic is upgraded and regenerated into high-added-value chemicals under the condition of no membrane, and has the effects of reducing the equipment cost and rapidly converting the reaction substrate into a target product on the premise of ensuring the equipment performance.
2. According to the utility model, the temperature control module is introduced, so that the reaction rate is effectively improved, and the effect of reducing the generation of non-Faraday products is achieved.
3. The utility model enlarges the reaction system by increasing the number of the galvanic piles, and has the effect of long-time stable operation under the condition of high current.
In conclusion, the method has the characteristics of high product selectivity, high yield, continuous production and good stability.
Drawings
FIG. 1 is a schematic diagram of a PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device.
FIG. 2 is a schematic structural view of a continuous reaction mechanism 2 according to the present utility model.
FIG. 3 is a schematic view showing the structure of a group of the continuous reaction mechanism 2 of the present utility model, which is close to the discharge side shell plate when the group is provided only or in plural.
FIG. 4 is a schematic structural view of three sets of continuous reaction mechanisms 2 according to an embodiment of the present utility model.
Fig. 5 is a physical diagram of the present utility model.
In the figure, 1. A raw material mechanism; electrolyte storage tank, electrolyte feed pump, 2, continuous reaction mechanism, 21, feed inlet, 22, first discharge outlet, 23, second discharge outlet, 24, electrode unit, 241, anode current collecting plate, 2411, anode mixing cavity, 2412, anode discharge cavity, 2413, anode liquid flow channel, 2414, anode wiring board, 242, anode, 243, first gasket, 2431, mixing cavity, 2432, reaction cavity, 2433, discharge cavity, 244, cathode, 245, cathode current collecting plate, 2451, cathode mixing cavity, 2452, cathode discharge cavity, 2453, cathode liquid flow channel, 2454, cathode wiring board, 246, second gasket, 2461, second discharge cavity, 247, third gasket, 248, fourth gasket, 249, fifth gasket, 3, temperature control mechanism, 31, temperature control module, 32, heating plate, 4, hydrogen gas transport mechanism, 41, water separator, 42, water pump.
Detailed Description
The structural and operational principles of the present utility model will be described in detail with reference to the accompanying drawings.
The membraneless electrocatalytic continuous reaction mechanism 2 comprises a shell, wherein a feeding side shell plate and a discharging side shell plate are respectively arranged at two ends of the shell, a feeding port 21 is arranged at the lower end of the feeding side shell plate made of nickel materials, a first discharging port 22 is arranged at the upper end of the discharging side shell plate made of nickel materials, a second discharging port 23 is arranged at the lower end of the discharging side shell plate, three groups of electrode units 24 are arranged between the feeding side shell plate and the discharging side shell plate, as shown in fig. 4, and are fixedly connected through bolts, and each group of electrode units 24 are connected with a direct-current power supply.
As shown in fig. 2 and 3, the first discharge port 22 and the second discharge port 23 are disposed on the discharge side shell plate in a diagonally distributed manner.
As shown in fig. 2, the electrode unit 24 includes an anode current collecting plate 241 made of nickel, an anode 242, a first gasket 243, a cathode 244, and a cathode current collecting plate 245 made of nickel, which are stacked in this order, wherein the anode current collecting plate 241 is adjacent to the feed side shell, and the cathode current collecting plate 245 is adjacent to the discharge side shell.
As shown in fig. 2, the lower portion of the anode collecting plate 241 is provided with a square through hole as an anode mixing cavity 2411, the upper portion is provided with a square through hole as an anode discharging cavity 2412, an S-shaped coiled anode liquid flow channel 2413 is formed in the middle section of the anode collecting plate 241 between the anode mixing cavity 2411 and the anode discharging cavity 2412, and the liquid inlet and the liquid outlet of the anode liquid flow channel 2413 are arranged in a diagonal manner and are respectively communicated with the anode mixing cavity 2411 and the anode discharging cavity 2412.
As shown in fig. 2, the cathode collecting plate 245 has a square through hole at the lower part as a cathode mixing chamber 2451, a square through hole at the upper part as a cathode discharging chamber 2452, an S-shaped coiled cathode liquid flow channel 2453 is formed in the middle section of the cathode collecting plate 245 between the cathode mixing chamber 2451 and the cathode discharging chamber 2452, and the liquid inlet and the liquid outlet of the cathode liquid flow channel 2453 are arranged in diagonal line and are respectively communicated with the cathode mixing chamber 2451 and the cathode discharging chamber 2452, as shown in fig. 3 and 4, and when only one group of electrode units 24 are arranged or only one group of electrode units 24 are arranged, the cathode collecting plate 245 closest to the electrode units 24 of the discharging side shell plate is only provided with a square through hole at the upper part as a cathode discharging chamber 2452.
As shown in fig. 2 and 3, the anode 242 includes an anode conductive substrate, on which an anode catalyst is supported, and has an area of 50cm 2.
As shown in fig. 2 and 3, the cathode 244 includes a cathode conductive substrate, on which a cathode catalyst is supported, and has an area of 50cm 2.
The anode catalyst electrode 242 and the cathode catalyst electrode 244 control reaction conditions to upgrade and reform the waste plastic PET into high value-added chemicals.
As shown in fig. 2 and 3, the first gasket 243 is made of rubber with a thickness of 0.5cm, and three square through holes are sequentially formed from bottom to top to serve as a mixing chamber 2431, a reaction chamber 2432 and a discharge chamber 2433, and two sides of the reaction chamber 2432 are covered with an anode 242 and a cathode 244.
As shown in fig. 2, the inlet 21 is in communication with the anode mixing chamber 2411, the mixing chamber 2431 and the cathode mixing chamber 2451 in sequence.
As shown in fig. 2 and 3, the anode discharge chamber 2412 is in communication with the discharge chamber 2433, the cathode discharge chamber 2452, and the first discharge port 22.
As shown in fig. 2, the anode liquid flow channel 2413 is in communication with the reaction chamber 2432 and the cathode liquid flow channel 2453 in sequence.
As shown in fig. 1, 2 and 3, the top end of the anode current collecting plate 241 is provided with a raised anode wiring plate 2414, the top end of the cathode current collecting plate 245 is provided with a raised cathode wiring plate 2454, the anode wiring plate 2414 is connected with the positive pole of the dc power supply, the cathode wiring plate 2454 is connected with the negative pole of the dc power supply, and the anode wiring plates 2414 and the cathode wiring plates 2454 are staggered.
As shown in fig. 2 and 3, a third gasket 247 is disposed between the anode current collecting plate 241 and the feed-side casing plate.
As shown in fig. 2 and 3, a fourth spacer 248 is further disposed between the anode 242 and the first spacer 243.
As shown in fig. 2 and 3, a fifth spacer 249 is further disposed between the cathode 244 and the first spacer 243.
As shown in fig. 2 and 3, the third gasket (247), the fourth gasket (248) and the fifth gasket (249) have the same structure as the first gasket (243).
As shown in fig. 2 and 3, a second gasket 246 is disposed between the cathode current collecting plate 245 and the discharge side shell plate, a square through hole is formed in the second gasket 246 as a second discharge cavity 2461, and the thickness of the second gasket is greater than that of the first gasket 243, the second gasket is used for buffering the mixed solution of the electrolyte and the hydrogen after the reaction, the generated gas is discharged from the first discharge port 22, and the generated electrolyte containing formate is discharged from the second discharge port 23.
As shown in fig. 2 and 3, the second discharge chamber 2461 is respectively communicated with the cathode discharge chamber 2452, the first discharge port 22 and the second discharge port 23.
As shown in fig. 4, a first spacer 243 is disposed between the three sets of electrode units 24.
As shown in fig. 1 and 5, the PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device based on the membraneless electrocatalytic continuous reaction mechanism comprises a raw material mechanism 1 for providing raw materials required for hydrogen production, a membraneless electrocatalytic continuous reaction mechanism 2 for continuously reacting the raw materials provided by the raw material mechanism 1, a temperature control mechanism 3 for controlling the temperature of the continuous reaction mechanism 2, and a hydrogen transportation mechanism 4 for collecting hydrogen prepared after the continuous reaction mechanism 2 reacts and recycling waste materials after the reaction;
As shown in fig. 1, the raw material mechanism 1 includes an electrolyte storage tank 11, a discharge port of the electrolyte storage tank 11 is provided with an electrolyte supply pump 12, the electrolyte supply pump 12 is communicated with a feed port 21 of the continuous reaction mechanism 2, the electrolyte in the electrolyte storage tank 11 may be 1-10M sodium hydroxide or potassium hydroxide solution in which PET waste plastics are dissolved, and in this embodiment, the electrolyte in the electrolyte storage tank 11 is 10M sodium hydroxide solution in which PET waste plastics are dissolved;
The temperature control mechanism 3 comprises a temperature control module 31, the temperature control module 31 is in control connection with two heating plates 32, and the two heating plates 32 are respectively covered on a feeding side shell plate and a discharging side shell plate of the continuous reaction mechanism 2;
the hydrogen transportation mechanism 4 comprises a water-gas separator 41 for separating generated gas, a water pump 42 is arranged at a liquid outlet hole of the water-gas separator 41, and the water pump 42 is communicated with the electrolyte storage tank 11 of the raw material mechanism 1 to provide a required water source in the separation process;
The first discharge port 22 of the continuous reaction mechanism 2 is communicated with the water-gas separator 41 of the hydrogen transportation mechanism 4.
The working principle of the utility model is as follows:
The required electrolyte in which the PET waste plastics are dissolved is stored in an electrolyte storage tank 11, a reaction material is fed into a continuous reaction mechanism 2 by an electrolyte feed pump 12, the temperature required by the reaction is controlled by a temperature control mechanism 3, a direct current power supply is started, and the anode current collecting plate 241 is ensured to be connected with the positive electrode of the direct current power supply, and the cathode current collecting plate 245 is connected with the negative electrode of the direct current power supply. The continuous reaction mechanism 2 ensures that the reaction temperature is stable within a set temperature range under the control of the temperature control mechanism 3. As the electrocatalytic reaction proceeds, the PET waste plastic will be upgraded to a formate solution and simultaneously produce hydrogen. The formate produced is discharged through the second outlet 23, hydrogen and a small amount of formate solution are fed into the hydrogen transport mechanism 4 through the first outlet 22, the hydrogen is separated by the water separator 41 and the formate solution is fed into the electrolyte reservoir 11 through the water pump 42 for subsequent further separation and purification.
Application example 1
The utility model is applied to electrocatalytic PET waste plastic upgrading and formate coupling hydrogen production, and the alkaline electrolyte in the embodiment is 1mol/L potassium hydroxide dissolved with 10g of PET waste plastic.
In this embodiment, the working area of the anode 242 and the cathode 244 is 50cm 2, the anode 242 is nickel hydroxide supported palladium electrode material (Pd/NiOOH) with a size of 7.1cm by 7.1cm, and the cathode 244 is nickel foam with a size of 7.1cm by 7.1 cm.
The stable operation time is more than 150 hours under the current of 2A, the single conversion rate of PET is about 85 percent, the formate selectivity is as high as 83 percent, and compared with the prior art, the single conversion rate of PET is improved by 8 percent, and the formate selectivity is improved by 12 percent.
Application example 2
The utility model is applied to electrocatalytic PET waste plastic upgrading and formate coupling hydrogen production, in the embodiment, the alkaline electrolyte is 5mol/L potassium hydroxide, and PET hydrolysate and potassium hydroxide solution are injected into a continuous reaction mechanism according to the same flow rate.
In this embodiment, the working area of the anode 242 and the cathode 244 is 50cm 2, the anode 242 is 7.1cm by 7.1cm of bi-metal layered hydroxide (NiCo-LDH), and the cathode 244 is 7.1cm by 7.1cm of nickel foam.
The stable operation time exceeds 70h under the current of 5A, the single conversion rate of PET is about 80%, the formate selectivity reaches 78%, and compared with the prior art, the single conversion rate of PET is improved by 5%, and the formate selectivity is improved by 10%.
Claims (9)
1. The membrane-free electrocatalytic continuous reaction mechanism comprises a shell, wherein two ends of the shell are respectively provided with a feeding side shell plate and a discharging side shell plate, the membrane-free electrocatalytic continuous reaction mechanism is characterized in that the lower end of the feeding side shell plate is provided with a feeding hole (21), the upper end of the discharging side shell plate is provided with a first discharging hole (22), the lower end of the discharging side shell plate is provided with a second discharging hole (23), at least one group of electrode units (24) are arranged between the feeding side shell plate and the discharging side shell plate, and each group of electrode units (24) is connected with a direct current power supply;
The electrode unit (24) comprises an anode current collecting plate (241), an anode (242), a first gasket (243), a cathode (244) and a cathode current collecting plate (245) which are sequentially stacked, wherein the anode current collecting plate (241) is close to one side of a shell plate at the feeding side, and the cathode current collecting plate (245) is close to one side of a shell plate at the discharging side;
The lower part of the anode current collecting plate (241) is provided with a square through hole serving as an anode mixing cavity (2411), the upper part of the anode current collecting plate is provided with a square through hole serving as an anode discharging cavity (2412), the middle section of the anode current collecting plate (241) between the anode mixing cavity (2411) and the anode discharging cavity (2412) forms an S-shaped coiled anode liquid flow channel (2413), and a liquid inlet and a liquid outlet of the anode liquid flow channel (2413) are arranged in a diagonal way and are respectively communicated with the anode mixing cavity (2411) and the anode discharging cavity (2412);
The cathode collecting plate (245) is provided with a square through hole at the lower part as a cathode mixing cavity (2451), the square through hole at the upper part as a cathode discharging cavity (2452), an S-shaped coiled cathode liquid flow channel (2453) is formed in the middle section of the cathode collecting plate (245) between the cathode mixing cavity (2451) and the cathode discharging cavity (2452), the liquid inlet and the liquid outlet of the cathode liquid flow channel (2453) are arranged in a diagonal manner and are respectively communicated with the cathode mixing cavity (2451) and the cathode discharging cavity (2452), and when only one group of electrode units (24) are arranged or only the square through hole is formed at the upper part of the cathode collecting plate (245) of the electrode unit (24) closest to the discharging side shell plate in the plurality of groups of electrode units (24) as the cathode discharging cavity (2452);
The anode (242) includes an anode conductive substrate on which an anode catalyst is supported;
The cathode (244) includes a cathode conductive substrate on which a cathode catalyst is supported;
Three square through holes are sequentially formed in the first gasket (243) from bottom to top and serve as a mixing cavity (2431), a reaction cavity (2432) and a discharging cavity (2433), and anodes (242) and cathodes (244) are covered on two sides of the reaction cavity (2432);
The feed inlet (21) is sequentially communicated with the anode mixing cavity (2411), the mixing cavity (2431) and the cathode mixing cavity (2451);
The anode discharging cavity (2412) is sequentially communicated with the discharging cavity (2433), the cathode discharging cavity (2452) and the first discharging hole (22);
The anode liquid flow channel (2413) is sequentially communicated with the reaction cavity (2432) and the cathode liquid flow channel (2453).
2. The membraneless electrocatalytic continuous reaction mechanism of claim 1, wherein the first discharge port (22) and the second discharge port (23) are diagonally disposed on the discharge side shell plate.
3. The membraneless electrocatalytic continuous reaction mechanism of claim 1, wherein a raised anode wiring board (2414) is provided at the top end of the anode current collecting board (241), a raised cathode wiring board (2454) is provided at the top end of the cathode current collecting board (245), the anode wiring board (2414) is connected with the positive pole of the direct current power supply, the cathode wiring board (2454) is connected with the negative pole of the direct current power supply, and the anode wiring boards (2414) are staggered with the cathode wiring board (2454).
4. The membraneless electrocatalytic continuous reaction mechanism of claim 1, wherein a third gasket (247) is disposed between the anode current collector plate (241) and the feed side shell plate;
A fourth gasket (248) is arranged between the anode (242) and the first gasket (243);
a fifth gasket (249) is arranged between the cathode (244) and the first gasket (243);
The third gasket (247), the fourth gasket (248) and the fifth gasket (249) have the same structures as the first gasket (243);
A second gasket (246) is arranged between the cathode current collecting plate (245) and the discharging side shell plate, the second gasket (246) is provided with a square through hole serving as a second discharging cavity (2461), and the thickness of the second gasket is larger than that of the first gasket (243);
The second discharging cavity (2461) is respectively communicated with the cathode discharging cavity (2452), the first discharging hole (22) and the second discharging hole (23).
5. The membraneless electrocatalytic continuous reaction mechanism of claim 1, wherein when the electrode units (24) are in multiple groups, a first gasket (243) is disposed between adjacent electrode units (24).
6. The membraneless electrocatalytic continuous reaction mechanism of claim 1, wherein the material of the feed side shell plate, the discharge side shell plate, the anode current collecting plate (241) and the cathode current collecting plate (245) is nickel, iron or titanium.
7. The membraneless electrocatalytic continuous reaction mechanism of claim 1, wherein the thickness of the first gasket (243), the third gasket (247), the fourth gasket (248) and the fifth gasket (249) is 0.02 cm-0.5 cm, and the materials are tetrafluoroethylene, silica gel, fluorine gum, polyether ether ketone or rubber;
The distance between the anode current collecting plate (241) and the cathode current collecting plate (245) of the electrode unit (24) is 0.02 cm-1 cm;
The area of the anode (242) or the cathode (244) is not less than 50cm 2.
8. PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device of film-free electrocatalytic continuous reaction mechanism is characterized by comprising:
a raw material mechanism (1) for providing raw materials required for hydrogen production;
the continuous reaction mechanism (2) according to any one of claims 1 to 7, configured to continuously react the raw materials provided by the raw material mechanism (1);
The temperature control mechanism (3) is used for controlling the temperature of the continuous reaction mechanism (2);
And the hydrogen transportation mechanism (4) is used for collecting the hydrogen prepared after the continuous reaction mechanism (2) reacts and recycling the waste after the reaction.
9. The PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device according to claim 8, wherein the raw material mechanism (1) comprises an electrolyte storage tank (11), an electrolyte feed pump (12) is arranged at a discharge port of the electrolyte storage tank (11), and the electrolyte feed pump (12) is communicated with a feed port (21) of the continuous reaction mechanism (2);
The temperature control mechanism (3) comprises a temperature control module (31), the temperature control module (31) is in control connection with a plurality of heating plates (32), and the heating plates (32) are covered on a feeding side shell plate and a discharging side shell plate of the continuous reaction mechanism (2);
The hydrogen transportation mechanism (4) comprises a water-gas separator (41), a water pump (42) is arranged in a liquid outlet hole of the water-gas separator (41), and the water pump (42) is communicated with an electrolyte storage tank (11) of the raw material mechanism (1);
The first discharge port (22) of the continuous reaction mechanism (2) is communicated with the water-gas separator (41) of the hydrogen transportation mechanism (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421599027.2U CN222923256U (en) | 2024-07-08 | 2024-07-08 | Membraneless electrocatalytic continuous reaction mechanism and PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421599027.2U CN222923256U (en) | 2024-07-08 | 2024-07-08 | Membraneless electrocatalytic continuous reaction mechanism and PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device |
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| CN222923256U true CN222923256U (en) | 2025-05-30 |
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| CN202421599027.2U Active CN222923256U (en) | 2024-07-08 | 2024-07-08 | Membraneless electrocatalytic continuous reaction mechanism and PET waste plastic upgrading and regenerating coupling temperature control hydrogen production device |
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