Extensible photocoupling flat plate type reactor for producing hydrogen by photosplitting water

Abstract

The utility model discloses an extendable photocoupling flat plate type photolysis water hydrogen production reactor, including upper cover plate, base plate, carrier plate and sealing subassembly, the base plate is provided on the bottom of upper cover plate, the upper part, middle part, lower part of base plate are respectively provided with liquid inlet, base plate middle part opening and liquid outlet, the liquid outlet is provided with liquid inlet, base plate middle part opening and liquid outlet. The upper cover plate comprises a quartz glass plate and an acrylic frame, the quartz glass plate and the acrylic frame are bonded through a waterproof strong adhesive, and different photocatalyst support plates can be fixed through the added fixing plate; the depth of a reaction area can be adjusted by adding a common base plate, the mass transfer efficiency in the photocatalytic water splitting process is improved, and reaction dead zones are reduced; through the reserved opening in the middle of the base plate, a photocatalyst support plate can be combined, and the photocoupling water photolysis hydrogen production effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of photocatalytic water splitting hydrogen production reactors, in particular to an expandable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor. Background Art

[0002] Hydrogen, with its high calorific value, clean and environmentally friendly properties, and abundant reserves, is a promising new energy source. Semiconductor photocatalytic water splitting to produce hydrogen utilizes renewable solar energy as a driving force, abundant water as a reactant, and semiconductors as catalysts. As a carbon-free, clean energy production method, it has attracted widespread attention. In addition to the crucial semiconductor catalyst, the design of the photocatalytic water splitting reactor is also a key factor influencing hydrogen production efficiency.

[0003] Currently, there are two main types of photocatalytic hydrogen production reactors: a nanoparticle suspension system based on powdered semiconductor catalysts, either a kettle reactor or a tubular reactor; and a flat-plate reactor based on a photocatalyst plate. Flat-plate reactors offer higher light utilization, are easier to scale and integrate, and are more suitable for practical applications.

[0004] The following problems still exist in the flat-plate photolysis water hydrogen production reactor:

[0005] 1. In terms of material selection, quartz has high light transmittance but high cost and high requirements for one-piece molding technology, while acrylic sheet has low cost and high toughness, but its transmittance will be weakened by aging;

[0006] 2. The depth of the reaction zone is difficult to adjust, resulting in low mass transfer efficiency during photocatalytic water splitting and hydrogen production;

[0007] 3. The traditional flat-plate photocatalytic water splitting hydrogen production reactor does not have a reserved electrical auxiliary expansion interface, and its functions are limited. Utility Model Content

[0008] The purpose of the utility model is to provide an expandable photoelectrically coupled flat-plate photolysis water hydrogen production reactor to solve the problems of high preparation cost, complex structure, difficult adjustment of reaction zone depth and lack of photoelectric coupling expansion interface in the prior art.

[0009] To achieve the above objectives, the present invention provides the following technical solutions: an expandable photoelectrically coupled flat-plate photolysis water hydrogen production reactor, comprising an upper cover, a base plate, a carrier plate, and a sealing assembly, wherein the base plate is provided at the bottom of the upper cover, and a liquid inlet, a base plate middle opening, and a liquid outlet are respectively provided at the upper, middle, and lower positions of the base plate, the upper cover comprises a quartz glass plate and an acrylic frame, the quartz glass plate and the acrylic frame are bonded to each other with a waterproof strong adhesive, the acrylic frame comprises a first receiving groove and a second receiving groove, the first receiving groove is arranged on the outside of the second receiving groove, and the first receiving groove and the second receiving groove form a frame body of the acrylic frame Structure, a carrier plate is provided in the middle of the acrylic frame, and the carrier plate includes a photocatalyst carrier plate, a fixed plate and an ordinary pad. The photocatalyst carrier plate is fixed on the top of the fixed plate, and an ordinary pad is provided at the bottom of the fixed plate. A fixed plate middle opening is opened in the middle of the fixed plate, and an ordinary pad middle opening is opened in the middle of the ordinary pad. The sealing assembly includes a sealing gasket, a bolt and a plug. The sealing gasket is arranged between the upper cover plate and the base plate, and a plurality of threaded holes corresponding to each other are opened on the four sides of the sealing gasket, the four sides of the acrylic frame and the four sides of the base plate. The bolts pass through the threaded holes on the acrylic frame, the sealing gasket and the base plate in sequence.

[0010] Preferably, the first receiving groove has the same size as the quartz glass plate, and the length and width of the second receiving groove are smaller than those of the first receiving groove. The first receiving groove is used to place the quartz glass plate.

[0011] Preferably, the frame structure formed by the acrylic frame is a reaction tank, and the reaction tank is rectangular.

[0012] Preferably, a cross-shaped track is installed on the surface of the fixing plate, and a plurality of small fixing parts are provided on the fixing plate.

[0013] Preferably, the photocatalyst carrier is rectangular, and the photocatalyst carrier is divided into an ordinary carrier and a conductive carrier. The ordinary carrier includes one of an ordinary glass sheet, a glass fiber mesh, a ceramic sheet or an electrospun cloth, and the conductive carrier includes one of ITO, FTO, a metal Ni sheet or a metal Cu sheet.

[0014] Preferably, the liquid inlet and the liquid outlet are both provided with a threaded interface 1, and the threaded interface 1 is used to connect a pagoda connector.

[0015] Preferably, a second threaded interface is provided in the middle opening of the base plate, and the second threaded interface is used to connect a plug or expand a plug, and the base plate is an acrylic plate.

[0016] Preferably, the plug includes a first plug thread and a first plug end, and the first plug thread is arranged on the top of the first plug end.

[0017] Preferably, the extended plug includes a second plug thread, a second plug end, an extended plug sealing sleeve and an extended plug wire sleeve, the second plug thread is arranged at the top of the second plug end, the bottom of the second plug end is connected to the extended plug sealing sleeve, and the bottom of the extended plug sealing sleeve is connected to the extended plug wire sleeve.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The main body material of the flat-plate photocatalytic water splitting hydrogen production reactor of the utility model is a low-cost, strong and tough acrylic plate with the advantage of economy. The quartz glass plate in the upper cover plate has a simple structure, high light transmittance and long service life. The added fixing plate can be used to fix different photocatalyst carrier plates. The added ordinary pad can adjust the depth of the reaction zone, increase the mass transfer efficiency of the photocatalytic water splitting process, and reduce the reaction dead zone. Through the reserved opening in the middle of the base plate, the photocatalyst carrier plate can be combined to form a photoelectrically coupled photocatalytic water splitting hydrogen production effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an explosion diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the acrylic frame of the utility model;

[0022] Figure 3 This is a structural diagram of the fixed plate of the utility model;

[0023] Figure 4 This is a structural diagram of a common pad of the utility model;

[0024] Figure 5 This is a schematic structural diagram of the base plate of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the plug of the utility model;

[0026] Figure 7 This is a schematic structural diagram of the expansion plug of the utility model.

[0027] In the figure: 1. Quartz glass plate; 2. Acrylic frame; 3. Sealing gasket; 4. Photocatalyst carrier plate; 5. Fixed plate; 6. Ordinary pad; 7. Base plate; 8. Plug; 9. Extended plug; 10. Threaded hole; 11. Liquid inlet; 12. Liquid outlet; 13. Fixed small parts; 14. Track; 15. First accommodating groove; 16. Second accommodating groove; 17. Middle opening of fixed plate; 18. Middle opening of ordinary pad; 19. Middle opening of base plate; 20. First plug thread; 21. First plug end; 22. Extended plug sealing sleeve; 23. Extended plug wire sleeve; 24. Second plug thread; 25. Second plug end. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figure 1-6 The utility model provides an expandable photoelectrically coupled flat-plate photolysis water hydrogen production reactor, comprising an upper cover, a base plate 7, a carrier plate and a sealing assembly. The bottom of the upper cover is provided with a base plate 7, and a liquid inlet 11, a base plate middle opening 19 and a liquid outlet 12 are respectively opened at the upper, middle and lower positions of the base plate 7. The upper cover comprises a quartz glass plate 1 and an acrylic frame 2. The quartz glass plate 1 and the acrylic frame 2 are bonded by a waterproof strong adhesive. The acrylic frame 2 comprises a first receiving groove 15 and a second receiving groove 16. The first receiving groove 15 is arranged on the outside of the second receiving groove 16, and the first receiving groove 15 and the second receiving groove 16 form a frame structure of the acrylic frame 2. The middle portion of the acrylic frame 2 is provided with a carrier plate. Plate, the carrier plate includes a photocatalyst carrier plate 4, a fixed plate 5 and an ordinary pad 6, the carrier plate is used to load the semiconductor catalyst; the photocatalyst carrier plate 4 is fixed on the top of the fixed plate 5, and the bottom of the fixed plate 5 is provided with an ordinary pad 6, the middle of the fixed plate 5 is provided with a fixed plate middle opening 17, and the middle of the ordinary pad 6 is provided with an ordinary pad middle opening 18, the sealing assembly includes a sealing gasket 3, a bolt and a plug 8, the sealing gasket 3 is arranged between the upper cover plate and the base plate 7, and the four sides of the sealing gasket 3, the four sides of the acrylic frame 2 and the four sides of the base plate 7 are provided with a plurality of threaded holes 10 corresponding to each other, and the bolts pass through the threaded holes 10 on the acrylic frame 2, the sealing gasket 3 and the base plate 7 in turn, and a seal is formed by extrusion.

[0031] The size of the first receiving groove 15 is consistent with that of the quartz glass plate 1 , and the length and width of the second receiving groove 16 are smaller than those of the first receiving groove 15 ; the frame structure formed by the acrylic frame 2 is a reaction groove, which is rectangular.

[0032] A cross-shaped track 14 is installed on the surface of the fixing plate 5 . A plurality of small fixing pieces 13 are provided on the fixing plate 5 . The photocatalyst carrier plate 4 is fixed by the small fixing pieces 13 of the fixing plate 5 .

[0033] Specifically, the function of the fixed plate 5 is to fix the photocatalyst carrier plate 4 when the photocatalyst carrier plate 4 is placed in the reaction tank, and the function of the ordinary pad 6 is to adjust the height of the photocatalyst carrier plate 4 when the photocatalyst carrier plate 4 is placed in the reaction tank to control the depth of the reaction zone.

[0034] The photocatalyst carrier plate 4 is rectangular. When the carrier of the photocatalyst carrier plate 4 is a common carrier plate, the common carrier plate includes one of a common glass sheet, a glass fiber mesh, a ceramic sheet or an electrospun cloth.

[0035] The liquid inlet 11 and the liquid outlet 12 are both provided with a threaded interface 1, which is used to connect to a pagoda connector.

[0036] A second threaded interface is provided in the middle opening 19 of the base plate, and the threaded interface is used to connect the plug 8. The base plate 7 is an acrylic plate.

[0037] The plug 8 includes a first plug thread 20 and a first plug end 21 . The first plug thread 20 is arranged on the top of the first plug end 21 .

[0038] During specific use, the quartz glass plate 1 is placed in the first receiving groove 15 in the acrylic frame 2, and connected by a strong adhesive to form an upper cover plate. Then, the ordinary pad 6, the fixed plate 5, the photocatalyst carrier plate 4, the sealing gasket 3 and the upper cover plate are placed in sequence on the base plate 7. The upper cover plate and the base plate 7 are squeezed by bolts to form a sealed area in the second receiving groove 16 space as a photocatalytic hydrogen production reaction zone. The depth of the reaction zone can be controlled by the height and number of the ordinary pad 6. The photocatalyst carrier plate 4 can be fixed by adjusting the fixing small piece 13 of the fixing plate 5. The central opening of the base plate 7 is sealed by a plug 8. The liquid inlet 11 and the liquid outlet 12 of the base plate 7 are respectively connected to the threaded interface 1. After connecting the external pipeline, the reaction liquid can be pumped into the reaction zone of the utility model by a circulating pump. When placing the utility model, it is necessary to ensure that the height of the liquid inlet 11 is lower than the liquid outlet 12. The hydrogen produced by the photocatalytic decomposition of water can be discharged through the liquid outlet 12 and collected after gas-liquid separation and enrichment treatment. The above embodiments can form a common flat-plate photolysis water hydrogen production reactor.

[0039] Example 2:

[0040] See also Figure 1-5 and Figure 7 When the carrier of the photocatalyst carrier 4 is a conductive carrier, the conductive carrier includes one of ITO, FTO, metal Ni sheet or metal Cu sheet.

[0041] The middle opening 19 of the base plate is provided with a threaded interface 2, which can also be used to connect the expansion plug 9.

[0042] The extended plug 9 includes a second plug thread 24, a second plug end 25, an extended plug sealing sleeve 22 and an extended plug wire sleeve 23. The second plug thread 24 is arranged at the top of the second plug end 25, the bottom of the second plug end 25 is connected to the extended plug sealing sleeve 22, and the bottom of the extended plug sealing sleeve 22 is connected to the extended plug wire sleeve 23.

[0043] When used specifically, the basic steps are consistent with the first embodiment. The difference from the first embodiment is that the photocatalyst carrier plate 4 must use a conductive carrier plate. The opening 19 in the middle of the base plate is sealed by an expansion plug 9 and connected to the electrode, wherein the negative electrode is connected to the photocatalyst carrier plate 4, and the positive electrode is a conductive metal sheet (metal nickel or platinum, gold) placed on the narrow side of the reaction zone to ensure that the positive and negative electrodes are not in direct contact. The positive and negative electrodes are provided with a stable voltage through an external power supply or photovoltaics. The above embodiment can form a photoelectrically coupled flat-plate photolysis water hydrogen production reactor.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An expandable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor, comprising an upper cover plate, a base plate (7), a carrier plate and a sealing assembly, characterized in that: The bottom of the upper cover is provided with a base plate (7), and the upper, middle and lower parts of the base plate (7) are respectively provided with a liquid inlet (11), a base plate middle opening (19) and a liquid outlet (12). The upper cover comprises a quartz glass plate (1) and an acrylic frame (2), and the quartz glass plate (1) and the acrylic frame (2) are bonded by a waterproof strong adhesive. The acrylic frame (2) comprises a first receiving groove (15) and a second receiving groove (16), and the first receiving groove (15) and the second receiving groove (16) form a frame structure of the acrylic frame (2). A carrier plate is provided in the middle of the acrylic frame (2), and the carrier plate comprises a photocatalyst carrier plate (4), a fixing plate (5) and a common pad (6), the photocatalyst carrier (4) is fixed on the top of the fixed plate (5), the bottom of the fixed plate (5) is provided with a common pad (6), the middle of the fixed plate (5) is provided with a fixed plate middle opening (17), the middle of the common pad (6) is provided with a common pad middle opening (18), the sealing assembly includes a sealing gasket (3), a bolt and a plug (8), the sealing gasket (3) is provided between the upper cover plate and the base plate (7), the four sides of the sealing gasket (3), the four sides of the acrylic frame (2) and the four sides of the base plate (7) are provided with a plurality of threaded holes (10) corresponding to each other, and the bolts pass through the threaded holes (10) on the acrylic frame (2), the sealing gasket (3) and the base plate (7) in sequence.

2. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 1, characterized in that: The size of the first accommodating groove (15) is consistent with that of the quartz glass plate (1), and the length and width of the second accommodating groove (16) are smaller than those of the first accommodating groove (15).

3. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 1, characterized in that: The frame structure formed by the acrylic frame (2) is a reaction tank, and the reaction tank is rectangular.

4. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 1, characterized in that: A cross-shaped track (14) is installed on the surface of the fixing plate (5), and a plurality of small fixing parts (13) are provided on the fixing plate (5).

5. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 1, characterized in that: The photocatalyst carrier plate (4) is rectangular and is divided into a common carrier plate and a conductive carrier plate. The common carrier plate includes one of a common glass sheet, a glass fiber mesh, a ceramic sheet or an electrostatically spun cloth, and the conductive carrier plate includes one of ITO, FTO, a metal Ni sheet or a metal Cu sheet.

6. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 1, characterized in that: The liquid inlet (11) and the liquid outlet (12) are both provided with a threaded interface 1, and the threaded interface 1 is used for connecting a pagoda connector.

7. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 1, characterized in that: The middle opening (19) of the base plate is provided with a second threaded interface, the second threaded interface is used to connect a plug (8) or an expansion plug (9), and the base plate (7) is an acrylic plate.

8. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 7, characterized in that: The plug (8) comprises a first plug thread (20) and a first plug end (21), wherein the first plug thread (20) is arranged at the top of the first plug end (21).

9. The scalable photoelectrically coupled flat-plate photocatalytic water splitting hydrogen production reactor according to claim 7, characterized in that: The extended plug (9) comprises a second plug thread (24), a second plug end (25), an extended plug sealing sleeve (22) and an extended plug wire sleeve (23), wherein the second plug thread (24) is arranged at the top of the second plug end (25), the bottom of the second plug end (25) is connected to the extended plug sealing sleeve (22), and the bottom of the extended plug sealing sleeve (22) is connected to the extended plug wire sleeve (23).

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