Photocatalysis hydrogen production device

Abstract

The invention discloses a photocatalytic hydrogen production device, and relates to the field of photocatalytic hydrogen production, the photocatalytic hydrogen production device comprises a power supply base, a catalysis box is mounted in the middle of the power supply base, a mounting rack covers the top of the catalysis box, a reaction device is arranged in the catalysis box, a feeding device is arranged on one side of the catalysis box, and a gas collection device is arranged on the top of the mounting rack; the reaction device comprises an ultraviolet lamp group, a catalysis plate is arranged in the catalysis box, and a lifting part is erected at the top of the mounting frame; the feeding device comprises a water storage tank, a water outlet of the water storage tank is hermetically connected with a water pumping component, a liquid level pipe is mounted on one side of the outer wall of the catalysis box, and a regulating tank group is mounted on the outer wall of the catalysis box; the gas collecting device comprises a gas dryer, a permeable gas separator and a membrane gas separator; a nitrogen tank is mounted on the other side of the top of the mounting frame; the photocatalytic hydrogen production device has the advantages that the light energy utilization efficiency is high, and the catalytic reaction rate can be controlled.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of photocatalytic hydrogen production, and specifically relates to a photocatalytic hydrogen production device. Background Technique

[0002] Photocatalytic hydrogen production technology uses photocatalysts to absorb light energy, generate electron-hole pairs. Electrons have reducibility and can reduce hydrogen ions in water molecules to hydrogen; holes have oxidizing properties and can oxidize water molecules to oxygen. This process mimics natural photosynthesis and is an effective way of artificial hydrogen production. Existing photocatalytic devices usually provide light sources by top irradiation. This catalytic method has the problem of low light energy utilization efficiency. Therefore, a new photocatalytic hydrogen production device is needed.

[0003] According to a general ultraviolet light concentrating catalytic hydrogen production device, method and use provided by the application number 202311588871.5, it includes a hydrogen production unit, an artificial light concentrating light source unit and a power adjustment unit; the hydrogen production unit includes a reaction tank for artificially photocatalytically decomposing water to produce hydrogen and oxygen; the artificial light concentrating light source unit includes a reflection assembly and several light emitting assemblies. The light emitting assemblies are used to emit artificial light, and the reflection assembly is used to reflect and concentrate the artificial light into the reaction tank; the power adjustment unit is used to provide electrical energy to the artificial light concentrating light source unit.

[0004] The above patent document converts electricity into artificial light of a single band and conducts artificial photocatalytic hydrogen production through light concentration, which is suitable for various power hydrogen production energy storage with fluctuation characteristics. However, the light utilization efficiency is not high, and the catalytic reaction lacks a structure for adjusting the rate. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a photocatalytic hydrogen production device to solve the technical problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A photocatalytic hydrogen production device includes a power supply base. A catalytic box is installed in the middle of the power supply base. An installation frame is covered on the top of the catalytic box. A reaction device is arranged inside the catalytic box. A feeding device is arranged on one side of the catalytic box. A gas collection device is arranged on the top of the installation frame;

[0008] The reaction device includes an ultraviolet lamp group arranged in the center inside the catalytic box for providing light source. A catalytic plate is arranged to be lifted and lowered inside the catalytic box. A lifting component for driving the catalytic plate to lift and lower is arranged on the top of the installation frame;

[0009] The feeding device comprises a water storage tank installed at one end of the top of the power supply base, the water outlet of the water storage tank is sealed and connected to a water pump component connected to the water inlet of the catalyst box, a liquid level pipe connected to the inside is installed on one side of the outer wall of the catalyst box, and a regulating tank group connected to the inside is also installed on the same side of the outer wall of the catalyst box;

[0010] The gas collecting device comprises a gas dryer installed on one side of the top of the mounting frame, a permeation gas separator and a membrane gas separator are continuously installed on one end of the top of the mounting frame, and a nitrogen tank is installed on the other side of the top of the mounting frame.

[0011] Preferably, the outer sleeve of the ultraviolet lamp group is provided with a transparent sleeve connecting the two sides of the catalyst box, a plurality of rows of catalyst rods are fixedly suspended at the bottom of the catalyst plate, the surface of the catalyst rods is coated with nano titanium dioxide catalyst, four sliding plates are connected at both ends of the catalyst plate, and four sliding grooves for limiting the sliding of the sliding plates are opened at both ends of the inner wall of the catalyst box.

[0012] Preferably, the lifting component includes two side-by-side bidirectional threaded rods rotatably installed in the center of the top of the mounting frame, a threaded sleeve is connected to each nut on the threads on both sides of the bidirectional threaded rod, a rectangular through groove is provided on the surface of the mounting frame at the bottom of the bidirectional threaded rod, a hinged plate is hinged at the bottom of the threaded sleeve and the other end is hinged to the top of the catalytic plate, a driving motor is fixedly installed at one end of the top of the mounting frame, and a dual-output reducer is installed on the top of the mounting frame, which has two output ends respectively connected to the two bidirectional threaded rods and an input end connected to the execution end of the driving motor.

[0013] Preferably, the water pumping component includes a pump installed at a corner of the top of the power supply base, a check valve is sealed at the middle input end of one end of the catalyst box, the pump input end and the water outlet of the water storage tank and the pump output end and the check valve are connected through a water pipe, and a drain pipe is connected to the bottom of the other end of the catalyst box.

[0014] Preferably, a transparent observation mirror is provided on the side wall of the liquid level tube, a scale line is drawn on one end of the transparent observation mirror, and an electronic pH meter with a probe extending deep into the inside is installed on the top of the liquid level tube.

[0015] Preferably, the outside of the adjustment tank group is provided with a frame plate, the frame plate is installed on the outside side of the catalyst box, and a flow valve is sealed and installed at the bottom of the adjustment tank group, and the bottom of the flow valve is sealed and connected to the inside of the catalyst box.

[0016] Preferably, two rows of exhaust pipes are respectively sealed and connected to the two input ends of the gas dryer, and the other end of the exhaust pipe is sealed and connected to the inside of the catalyst box.

[0017] Preferably, the permeable gas separator is responsible for separating hydrogen. At the top of one end of the power supply base, a first compressor is installed. On one side of the first compressor, a hydrogen tank is installed. The hydrogen output end of the permeable gas separator, the first compressor, and the hydrogen tank are connected through a first gas pipe.

[0018] Preferably, the membrane gas separator is responsible for separating oxygen. The input end of the membrane gas separator is connected end to end with the output end of the permeable gas separator. At the top of one end of the power supply base, a second compressor is installed. On one side of the second compressor, an oxygen tank is installed. The oxygen output end of the membrane gas separator, the second compressor, and the oxygen tank are connected through a second gas pipe.

[0019] Preferably, at one end of the nitrogen tank, a third compressor is installed on the top of the mounting rack. A spray pipe is installed through the center of the interior of the catalytic box. The output end of the membrane gas separator, the third compressor, the nitrogen tank, and the spray pipe are connected in sequence through a third gas pipe.

[0020] In summary, the present invention mainly has the following beneficial effects:

[0021] In this embodiment, by immersing the ultraviolet lamp group in the plasma water and separating it by a transparent sleeve, this design enables the ultraviolet light to directly irradiate the inner area of the plasma water, effectively increasing the effective irradiation area of the ultraviolet lamp, improving the efficiency of the plasma water absorbing light energy, and thus enhancing the effect of the photocatalytic reaction; the catalytic plate and the catalytic rods on it can be flexibly lifted and lowered through the lifting components. By controlling the length of the catalytic rods sinking into the plasma water, the rate of hydrogen production can be controlled as needed. This design not only improves the utilization rate of the catalyst but also makes the hydrogen production process more controllable.

[0022] The plasma water stored in the water storage tank is pumped into the interior of the catalytic box by a pump, and the water level height is observed through the transparent observation mirror and scale line on the liquid level pipe, ensuring the appropriate supply of the plasma water. At the same time, the electronic pH meter monitors the pH value of the plasma water in real time, and the flow valve is controlled by the PLC component to be briefly opened to introduce sodium dihydrogen phosphate for adjustment, so that the pH value always remains within the designed range, ensuring the stable progress of the photocatalytic reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an isometric view of the overall device of the present invention;

[0024] Figure 2 is a top view of the overall device of the present invention;

[0025] Figure 3 is a front view of the overall device of the present invention;

[0026] Figure 4 Rear view of the overall device of the present invention

[0027] Figure 5 Axonometric view of the disassembly of some components of the present invention;

[0028] Figure 6 Top view of the disassembly of some components of the present invention.

[0029] Description of the drawings: 10. Power supply base; 11. Catalytic box; 12. Mounting frame; 20. Reaction device; 21. Ultraviolet lamp group; 22. Catalytic plate; 23. Lifting component; 30. Feeding device; 31. Water storage tank; 32. Water pumping component; 33. Liquid level pipe; 34. Regulating tank group; 40. Gas collecting device; 41. Gas dryer; 42. Permeable gas separator; 43. Membrane gas separator; 44. Nitrogen tank; 211. Transparent sleeve; 221. Catalytic rod; 222. Sliding plate; 223. Chute; 231. Bidirectional threaded rod; 232. Threaded pipe sleeve; 233. Rectangular through groove; 234. Hinge plate; 235. Driving motor; 236. Double-output reducer; 321. Pump; 322. Check valve; 323. Water conduit; 324. Drain pipe; 331. Transparent observation mirror; 332. Scale line; 333. Electronic pH meter; 341. Shelf board; 342. Flow valve; 411. Exhaust pipe; 421. First compressor; 422. Hydrogen tank; 423. First gas conduit; 431. Second compressor; 432. Oxygen tank; 433. Second gas conduit; 441. Third compressor; 442. Jet pipe; 443. Third gas conduit. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0031] Next, the embodiments of the present invention will be described according to its overall structure.

[0032] Embodiment

[0033] Please refer specifically to the attached Figure 1 、 2, 5, and 6, a device for producing hydrogen by photocatalysis comprises a power supply base 10, a catalyst box 11 is installed in the middle of the power supply base 10, a mounting frame 12 is provided on the top cover of the catalyst box 11, a reaction device 20 is provided inside the catalyst box 11, a feeding device 30 is provided on one side of the catalyst box 11, and a gas collecting device 40 is provided on the top of the mounting frame 12; the reaction device 20 comprises an ultraviolet lamp group 21 provided in the center of the catalyst box 11 for providing a light source, a catalyst plate 22 is provided in the catalyst box 11 for lifting, and a catalyst plate 22 is provided on the top of the mounting frame 12 for driving the catalyst plate 2 2 lifting and lowering component 23; the feeding device 30 includes a water storage tank 31 installed at one end of the top of the power supply base 10, the water outlet of the water storage tank 31 is sealed and connected to a pumping component 32 connected to the water inlet of the catalyst box 11, a liquid level pipe 33 connected to the inside is installed on one side of the outer wall of the catalyst box 11, and a regulating tank group 34 connected to the inside is also installed on the same side of the outer wall of the catalyst box 11; the gas collection device 40 includes a gas dryer 41 installed on one side of the top of the mounting frame 12, and a permeation gas separator 42 and a membrane gas separator 43 are continuously installed on one end of the top of the mounting frame 12. The separator 43 is provided with a nitrogen tank 44 on the other side of the top of the mounting frame 12; the ultraviolet lamp group 21 is provided with a transparent sleeve 211 connected to the two sides of the catalyst box 11; the bottom of the catalyst plate 22 is fixedly hung with multiple rows of catalyst rods 221, and the surface of the catalyst rods 221 is coated with a nano-titanium dioxide catalyst; four sliding plates 222 are connected to both ends of the catalyst plate 22; and four slide grooves 223 for limiting the sliding of the sliding plates 222 are provided at both ends of the inner wall of the catalyst box 11; the lifting component 23 includes two bidirectional parallel rods 221 rotatably installed at the top center of the mounting frame 12. A threaded rod 231, each nut on the threads on both sides of the bidirectional threaded rod 231 is connected to a threaded sleeve 232, a rectangular through groove 233 opened on the surface of the mounting frame 12 is provided at the bottom of the bidirectional threaded rod 231, a hinged plate 234 is hinged at the bottom of the threaded sleeve 232, and the other end is hinged to the top of the catalytic plate 22, a driving motor 235 is fixedly installed at one end of the top of the mounting frame 12, and two output ends are respectively connected to the two bidirectional threaded rods 231, and the input end is connected to the dual output reducer 236 of the execution end of the driving motor 235.

[0034] As mentioned above, in this embodiment, the gas dryer 41, the permeation gas separator 42, the membrane gas separator 43, the dual-output reducer 236 and various electrical devices all adopt existing industrial equipment, which will not be described in detail in this embodiment, and each electrical device is connected to the power supply circuit of the power supply base 10 through a cable for normal power supply, and each electrical device is centrally controlled by a PLC controller, and the operation program can be adjusted according to production needs; in this embodiment, the ultraviolet lamp group 21 is immersed in plasma water and separated by a transparent sleeve 211. The ultraviolet lamp group 21 releases light energy in the water. Compared with irradiation on water, this structure can irradiate the internal area of the plasma water, increase the effective irradiation area of the ultraviolet lamp group 21, and improve the efficiency of plasma water in absorbing light energy; when photocatalytic hydrogen production is required When the catalyst rods 221 are moved downwards, the driving motor 235 starts to rotate the two bidirectional threaded rods 231 through the dual-output reducer 236, thereby driving the four threaded sleeves 232 to approach each other, so that the hinge plate 234 changes from tilted to vertical, and pushes the sliding plate 222 on the catalyst plate 22 to descend along the slide groove 223, so that the entire catalyst plate 22 descends, and the multiple rows of catalyst rods 221 are gradually immersed in the plasma water. The arrangement of the multiple rows of catalyst rods 221 should follow the principle of staggered transparent sleeves 211. The longer the length of the catalyst rods 221 immersed in the plasma water is, the larger the effective action area of the nano-titanium dioxide catalyst is. In this way, the rate of hydrogen generation can be controlled as needed. When it is necessary to stop hydrogen production, it is only necessary to start the driving motor 235 in reverse and lift all the catalyst rods 221 to stop hydrogen production.

[0035] Please refer to the attached Figure 1 , 2 As shown in Figures 4 and 6, the water pumping component 32 includes a pump 321 installed at a corner of the top of the power supply base 10, a check valve 322 is sealed and installed at the middle input end of one end of the catalyst box 11, the input end of the pump 321 and the water outlet of the water storage tank 31 and the output end of the pump 321 and the check valve 322 are connected through a water pipe 323, and a drain pipe 324 is connected to the bottom of the other end of the catalyst box 11; a transparent observation mirror 331 is provided on the side wall of the liquid level tube 33, and a scale line 332 is drawn on one end of the transparent observation mirror 331, an electronic pH meter 333 with a probe penetrating into the inside is installed on the top of the liquid level tube 33, a frame plate 341 is provided on the outside of the adjustment tank group 34, and the frame plate 341 is installed on the outside of the catalyst box 11, a flow valve 342 is sealed and installed at the bottom of the adjustment tank group 34, and the bottom of the flow valve 342 is sealed and connected to the inside of the catalyst box 11.

[0036] In this embodiment, the plasma water stored in the water storage tank 31 has a resistivity > 18 MΩ·cm. The plasma water stored in the water storage tank 31 is pumped into the interior of the catalytic box 11 through the pump 321 and the water conduit 323. The check valve 322 prevents the plasma water from flowing back. During the water pumping process, the water level height can be observed through the scale line 332 at one end of the transparent observation mirror 331. When the designed water level is reached, the operator needs to promptly intervene to stop the pump 321 from continuing to operate. The dispensing tank group 34 contains sodium dihydrogen phosphate as a phosphate buffer solution. During the photocatalysis process, the electronic pH meter 333 monitors the pH value of the plasma water in real time. When the pH value of the plasma water deviates from the designed value, the PLC component can control the flow valve 342 to open briefly through the electrical signal sent by the electronic pH meter 333, and introduce sodium dihydrogen phosphate for adjustment to make the pH value return to the designed value.

[0037] Please refer specifically to Attachment Figure 1 , 2 , Figures 3 and 6. Two input ends of the gas dryer 41 are respectively and hermetically connected to two rows of exhaust pipes 411, and the other ends of the exhaust pipes 411 are hermetically connected to the interior of the catalytic box 11; the permeable gas separator 42 is responsible for separating hydrogen. At the top of one end of the power supply base 10, a first compressor 421 is installed. A hydrogen tank 422 is installed on one side of the first compressor 421. The hydrogen output end of the permeable gas separator 42, the first compressor 421, and the hydrogen tank 422 are connected through a first conduit 423; the membrane gas separator 43 is responsible for separating oxygen. The input end of the membrane gas separator 43 is connected end to end with the output end of the permeable gas separator 42. At the top of one end of the power supply base 10, a second compressor 431 is installed. An oxygen tank 432 is installed on one side of the second compressor 431. The oxygen output end of the membrane gas separator 43, the second compressor 431, and the oxygen tank 432 are connected through a second conduit 433; one end of the nitrogen tank 44 is provided with a third compressor 441 installed on the top of the mounting frame 12. A jet pipe 442 is installed through the center of the interior of the catalytic box 11. The output end of the membrane gas separator 43, the third compressor 441, the nitrogen tank 44, and the jet pipe 442 are connected in sequence through a third conduit 443.

[0038] As described above, a plurality of jet nozzles are provided at both ends of the jet pipe 442 inside the catalytic box 11. The nitrogen gas tank 44 supplies nitrogen gas to the jet pipe 442. On the one hand, the nitrogen gas introduced into the catalytic box 11 can squeeze out the generated oxygen and hydrogen from the two rows of exhaust pipes 411. On the other hand, it can dilute the proportion of oxygen and hydrogen to prevent explosion hazards. The mixed gas discharged through the two rows of exhaust pipes 411 first passes through the gas dryer 41 to remove moisture in the gas, and then the permeable gas separator 42 separates hydrogen, which is compressed by the first compressor 421 and stored in the hydrogen gas tank 422. Then, the membrane gas separator 43 separates oxygen and nitrogen. The oxygen is compressed by the second compressor 431 and stored in the oxygen gas tank 432. Finally, the third compressor 441 compresses the remaining nitrogen and replenishes it into the nitrogen gas tank 44 for recycling.

[0039] Although the embodiments of the present invention have been shown and described, the specific embodiments are only interpretations of the present invention and not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations without creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A hydrogen production device using photocatalysis, comprising a power supply base (10), a catalytic box (11) is installed in the middle of the power supply base (10), and an installation frame (12) is covered on the top of the catalytic box (11), characterized in that, A reaction device (20) is provided inside the catalyst box (11), a feeding device (30) is provided on one side of the catalyst box (11), and a gas collecting device (40) is provided on the top of the mounting frame (12); The reaction device (20) comprises an ultraviolet lamp group (21) arranged in the center of the catalyst box (11) and responsible for providing a light source, a catalyst plate (22) is provided inside the catalyst box (11) for lifting, and a lifting component (23) for driving the catalyst plate (22) to lift is provided on the top of the mounting frame (12); The feeding device (30) comprises a water storage tank (31) installed at one end of the top of the power supply base (10); the water outlet of the water storage tank (31) is sealedly connected to a water pump component (32) connected to the water inlet of the catalyst box (11); a liquid level pipe (33) connected to the interior is installed on one side of the outer wall of the catalyst box (11); and a regulating tank group (34) connected to the interior is also installed on the same side of the outer wall of the catalyst box (11); The gas collecting device (40) comprises a gas dryer (41) installed on one side of the top of the mounting frame (12), a permeation gas separator (42) and a membrane gas separator (43) are continuously installed on one end of the top of the mounting frame (12), and a nitrogen tank (44) is installed on the other side of the top of the mounting frame (12).

2. The photocatalytic hydrogen production device according to claim 1, characterized in that, The ultraviolet lamp group (21) is externally sleeved with a transparent sleeve (211) connected to both sides of the catalyst box (11); a plurality of rows of catalyst rods (221) are fixedly suspended at the bottom of the catalyst plate (22); the surfaces of the catalyst rods (221) are coated with nano-titanium dioxide catalysts; four sliding plates (222) are connected to both ends of the catalyst plate (22); and four sliding grooves (223) for limiting the sliding of the sliding plates (222) are provided at both ends of the inner wall of the catalyst box (11).

3. The photocatalytic hydrogen production device according to claim 1, characterized in that, The lifting component (23) comprises two bidirectional threaded rods (231) arranged side by side and rotatably mounted at the center of the top of the mounting frame (12); a threaded sleeve (232) is connected to each nut on the threads on both sides of the bidirectional threaded rod (231); a rectangular through groove (233) is provided on the surface of the mounting frame (12) at the bottom of the bidirectional threaded rod (231); a hinge plate (234) is hinged at the bottom of the threaded sleeve (232), the other end of which is hinged to the top of the catalytic plate (22); a driving motor (235) is fixedly mounted at one end of the top of the mounting frame (12); and a dual-output reducer (236) is mounted at the top of the mounting frame (12), the output ends of which are respectively connected to the two bidirectional threaded rods (231) and the input end of which is connected to the execution end of the driving motor (235).

4. A photocatalytic hydrogen production device according to claim 1, characterized in that, The water pumping component (32) includes a pump (321) installed at a corner of the top of the power supply base (10). A check valve (322) is hermetically installed at the middle input end of one end of the catalytic tank (11). The input end of the pump (321) and the water outlet of the water storage tank (31), as well as between the output end of the pump (321) and the check valve (322), are connected by a water conduit (323). The other end of the catalytic tank (11) is communicated with a drain pipe (324) at the bottom.

5. A photocatalytic hydrogen production device according to claim 1, characterized in that, A transparent observation mirror (331) is provided on the side wall of the liquid level pipe (33). A scale line (332) is depicted at one end of the transparent observation mirror (331). An electronic pH meter (333) with a probe inserted into the interior is installed at the top of the liquid level pipe (33).

6. The photocatalytic hydrogen production device according to claim 5, characterized in that, A frame plate (341) is sleeved outside the adjustment tank group (34). The frame plate (341) is installed on one side outside the catalytic tank (11). A flow valve (342) is hermetically installed at the bottom of the adjustment tank group (34). The bottom of the flow valve (342) is hermetically connected to the inside of the catalytic tank (11).

7. A photocatalytic hydrogen production device according to claim 1, characterized in that, Two input ends of the gas dryer (41) are respectively hermetically connected to two rows of exhaust pipes (411). The other ends of the exhaust pipes (411) are hermetically connected to the inside of the catalytic tank (11).

8. A photocatalytic hydrogen production device according to claim 1, characterized in that, The permeable gas separator (42) is responsible for separating hydrogen. A first compressor (421) is installed at the top of one end of the power supply base (10). A hydrogen tank (422) is installed on one side of the first compressor (421). The hydrogen output end of the permeable gas separator (42), the first compressor (421), and the hydrogen tank (422) are connected by a first gas conduit (423).

9. The photocatalytic hydrogen production device according to claim 1, characterized in that, The membrane gas separator (43) is responsible for separating oxygen. The input end of the membrane gas separator (43) is connected end to end with the output end of the permeable gas separator (42). A second compressor (431) is installed at the top of one end of the power supply base (10). An oxygen tank (432) is installed on one side of the second compressor (431). The oxygen output end of the membrane gas separator (43), the second compressor (431), and the oxygen tank (432) are connected by a second gas conduit (433).

10. A photocatalytic hydrogen production device according to claim 1, characterized in that, A third compressor (441) is installed at the top of the mounting frame (12) at one end of the nitrogen tank (44). A jet pipe (442) is installed through the center inside the catalytic tank (11). The output end of the membrane gas separator (43), the third compressor (441), the nitrogen tank (44), and the jet pipe (442) are sequentially connected by a third gas conduit (443).

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