Biological hydrogen production generating device

Abstract

The utility model provides a biological hydrogen production generating device, which belongs to the technical field of biological hydrogen production and comprises a generator base body, a lamp box and a light guide component. A hydrogen production module is contained in the generator base body; one side of the generator base body further communicates with a leading-out module used for leading out hydrogen; a light through hole vertically corresponding to the hydrogen production module is formed in the top of the generator base body; the lamp box is arranged on the top of the generator base body. A light-emitting part of the lamp box is arranged downwards towards the light through hole; the light guide assembly is arranged between the light through hole and the light emitting part of the lamp box, the light guide assembly comprises a plurality of layers of light guide plates which are arranged up and down at intervals, and each layer of light guide plate is covered with a wavelength selective reflecting layer; the wavelength selective reflecting layer is used for screening effective light segments, and the light guide plate is used for uniformly distributing light energy. According to the biological hydrogen production generating device, light paths can be uniformly distributed, effective light sections can be screened, the photothermal effect can be reduced, and the hydrogen production efficiency and quality can be further improved.

Description

Technical Field

[0001] This utility model belongs to the field of biohydrogen production technology, and more specifically, relates to a biohydrogen generation device. Background Technology

[0002] Biological hydrogen production mainly utilizes the metabolic activities of microorganisms to generate hydrogen gas. Some photosynthetic bacteria, such as green sulfur bacteria, can produce hydrogen gas by transferring electrons from water to protons through the electron transport chain of photosynthesis under light conditions. These photosynthetic bacteria release hydrogen gas while using light energy to convert carbon dioxide and water into organic matter.

[0003] In existing technologies, the problem of uneven light distribution within photobioreactors is quite prominent, with a light distribution variation coefficient greater than 35%. This results in some areas of the reactor being overly illuminated while others are underly illuminated. Areas with insufficient light have lower hydrogen production efficiency, while areas with excessive light may damage the biological materials involved in hydrogen production, thereby affecting the overall hydrogen production efficiency and quality. Utility Model Content

[0004] The purpose of this invention is to provide a bio-hydrogen generation device, which aims to solve the technical problem that the uneven distribution of light path provided by the photobioreactor in the prior art affects the quality and efficiency of hydrogen production.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a bio-hydrogen generation device, comprising:

[0006] The generator base contains a hydrogen production module; one side of the generator base is also connected to an outlet module for exporting hydrogen; the top of the generator base is provided with light transmission holes corresponding to the hydrogen production module.

[0007] A light box is located on top of the generator base; the light-emitting part of the light box is positioned downwards towards the light-transmitting hole; and

[0008] A light guide assembly is disposed between the light-transmitting hole and the light-emitting part of the light box. The light guide assembly includes multiple layers of light guide plates arranged at intervals. Each layer of the light guide plate is covered with a wavelength selective reflective layer. The wavelength selective reflective layer is used to filter effective light segments, and the light guide plates are used to uniformly distribute light energy.

[0009] In one possible implementation, the light guide plate is provided in two sets, one set of which is located at the light-transmitting hole and connected to the top wall of the generator base; the other set of which covers the light-emitting part of the lamp box and is fixedly connected to the lamp box.

[0010] In some embodiments, the light guide plate is a honeycomb light guide plate, and the wavelength selective reflective layer is a deposited film structure; multiple layers of the wavelength selective reflective layer are deposited on each honeycomb light guide plate.

[0011] In one possible implementation, the generator base includes:

[0012] The outer casing has the light-transmitting hole at the top;

[0013] A gas-liquid separation layer is disposed within the outer shell; the gas-liquid separation layer has a box-shaped structure with an opening facing downwards and covers the bottom of the outer shell; the gas-liquid separation layer and the bottom of the outer shell enclose an inner cavity, and an outer cavity is formed between the gas-liquid separation layer and the inner wall of the outer shell;

[0014] The inner cavity contains the hydrogen production module to form a liquid hydrogen generation zone; the hydrogen generated from the liquid hydrogen generation zone enters the outer cavity through the gas-liquid separation layer; the outlet module passes through the outer shell and enters the outer cavity.

[0015] In some embodiments, the gas-liquid separation layer is a PTFE hollow fiber membrane, and the PTFE hollow fiber membrane has through holes with a pore size of 0.1μm-0.02μm.

[0016] For example, the porosity of the through-holes in the PTFE hollow fiber membrane is not less than 75%, and the filling density of the PTFE hollow fiber membrane is not less than 50%.

[0017] In some embodiments, the housing includes:

[0018] Support base;

[0019] A central support layer is fixed at the bottom to the support base and extends upward at the top; the central support layer has a downward-opening annular structure; the export module passes through the central support layer and enters the outer cavity;

[0020] A cover plate is placed on and fixed to the middle support layer, and the top of the cover plate is provided with the light-transmitting hole.

[0021] For example, the central support layer is a light-transmitting layer, and the central support layer is sealed to the support base and the cover plate.

[0022] In one possible implementation, the export module includes:

[0023] The outlet pipe has its inlet end extending into the generator base; a first control valve is provided on the outlet pipe.

[0024] A gas storage device is connected to the outlet end of the outlet pipe; and

[0025] The control component is located at the bottom of the generator base and is electrically connected to the first control valve.

[0026] In some embodiments, a pressure sensor is also provided on the outlet pipeline, and the pressure sensor is electrically connected to the control component.

[0027] Compared with the prior art, the solution shown in this application embodiment rationally sets the vertical corresponding positional relationship of the hydrogen production module, light-transmitting hole, light guide plate, and light-emitting part of the lamp box, so that the light emitted by the lamp box can be vertically incident on the hydrogen production module; the multi-layer light guide plate of the light guide component can evenly distribute light energy and guide the light to propagate effectively, so that the hydrogen production module can receive more suitable and uniform illumination, improving hydrogen production efficiency; by setting a wavelength selective reflection layer, the effective light segment can be further filtered, reducing photothermal effects and thus improving hydrogen production efficiency; in addition, through the optimized processing of light by the light guide component, damage to the biological materials involved in hydrogen production due to excessive light intensity or low hydrogen production efficiency due to insufficient light intensity is avoided, creating a stable and suitable hydrogen production environment for the hydrogen production module, which helps to improve the quality of hydrogen production. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of the bio-hydrogen generator provided in this embodiment of the utility model.

[0030] In the diagram: 1. Generator base; 11. Outer shell; 111. Support base; 112. Middle support layer; 113. Cover plate; 1131. Light transmission hole; 12. Gas-liquid separation layer; 13. Outer cavity; 14. Inner cavity; 2. Light box; 3. Light guide assembly; 31. Light guide plate; 32. Wavelength selective reflection layer; 4. Outlet module; 41. Outlet pipeline; 42. First control valve; 43. Gas storage device; 44. Pressure sensor. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0034] Please see Figure 1 The present invention provides a description of a bio-hydrogen generator. The bio-hydrogen generator includes a generator base 1, a lamp box 2, and a light guide assembly 3. The generator base 1 contains a hydrogen production module. One side of the generator base 1 is also connected to an outlet module 4 for exporting hydrogen gas. The top of the generator base 1 has light-transmitting holes 1131 corresponding to the hydrogen production module. The lamp box 2 is located on the top of the generator base 1. The light-emitting part of the lamp box 2 faces downwards toward the light-transmitting hole 1131. The light guide assembly 3 is located between the light-transmitting hole 1131 and the light-emitting part of the lamp box 2. The light guide assembly 3 includes multiple layers of light guide plates 31 spaced vertically, each layer of which is covered with a wavelength-selective reflective layer 32. The wavelength-selective reflective layer 32 is used to filter effective light bands, and the light guide plates 31 are used to uniformly distribute light energy.

[0035] The hydrogen production module includes photosynthetic bacteria for photosynthesis to produce hydrogen, as well as a culture medium suitable for the growth and life of photosynthetic bacteria and a bio-floating bed suitable for their reproduction. The specific structure of the hydrogen production module and the working principle of the hydrogen production process are existing technologies and will not be described in detail here.

[0036] The light box 2 is used to provide light energy for the hydrogen production module to survive and reproduce. The light guide component 3 is used to distribute and filter the light energy provided by the light box 2 and guide it to the hydrogen production module to optimize the light path and thus optimize the hydrogen production environment.

[0037] For example, the light guide component 3 can be disposed at the light transmission hole 1131 of the generator base 1 to optimize the light entering the light transmission hole 1131; or, the light guide component 3 can be disposed at the light-emitting part of the light box 2 to directly optimize the emitted light source.

[0038] Compared with the prior art, the bio-hydrogen generator provided by this utility model rationally sets the vertical corresponding positional relationship between the hydrogen production module, the light-transmitting hole 1131, the light guide plate 31, and the light-emitting part of the lamp box 2, so that the light emitted by the lamp box 2 can be vertically incident on the hydrogen production module. The multi-layer light guide plate 31 of the light guide component 3 can evenly distribute light energy and guide the light to spread effectively, so that the hydrogen production module can receive more suitable and uniform illumination, thereby improving the hydrogen production efficiency. By setting the wavelength selective reflection layer 32, the effective light segment can be further filtered to reduce the photothermal effect, thereby improving the hydrogen production efficiency. In addition, the optimized light processing of the light guide component 3 avoids damage to the biological materials involved in hydrogen production caused by excessive light or low hydrogen production efficiency caused by insufficient light, creating a stable and suitable hydrogen production environment for the hydrogen production module, which helps to improve the quality of hydrogen production.

[0039] Please see Figure 1 In some possible embodiments, two sets of light guide plates 31 are provided. One set of light guide plates 31 is located at the light transmission hole 1131 and is connected to the top wall of the generator base 1; the other set of light guide plates 31 is covered on the light-emitting part of the lamp box 2 and is fixedly connected to the lamp box 2.

[0040] In this application, by setting a light guide plate 31 at the light box 2, the light can be guided and optimized from the light emission source. By setting a light guide plate 31 at the light transmission hole 1131, the light can be guided and optimized from the light receiving end, thereby achieving a bidirectional effect. This allows the effective light segment to be transmitted more effectively to the area where the hydrogen production module is located, further improving the transmission efficiency and uniformity of light energy, thereby improving the hydrogen production efficiency.

[0041] Please see Figure 1 In some embodiments, the light guide plate 31 is a honeycomb light guide plate, and the wavelength selective reflective layer 32 is a deposited film structure; multiple layers of wavelength selective reflective layer 32 are deposited on each honeycomb light guide plate.

[0042] In this application, by setting up a multi-layer wavelength selective reflective layer 32, the effective light segment can be accurately screened; and the screened light segment is homogenized by a honeycomb light guide plate, so that the hydrogen production module can receive the light energy most conducive to bio-hydrogen production, thereby further improving the efficiency and quality of hydrogen production.

[0043] The honeycomb light guide plate has excellent light guiding performance, enabling more uniform distribution of light energy. Specifically, the honeycomb light guide plate uses PMMA material, and a wavelength selective reflective layer 32 is deposited on the honeycomb light guide plate through chemical deposition to form an optical coating layer. It should be understood that the PMMA substrate and the optical coating have high compatibility, which can accurately achieve the transmission of blue light in the 400-500nm range and the reflection of yellow-green light in the 500-600nm range, thus achieving effective screening.

[0044] Please see Figure 1 In some possible embodiments, the generator base 1 includes an outer shell 11 and a gas-liquid separation layer 12; the top of the outer shell 11 is provided with a light-transmitting hole 1131; the gas-liquid separation layer 12 is disposed inside the outer shell 11; the gas-liquid separation layer 12 has a box-shaped structure with its opening facing downwards and covers the bottom of the outer shell 11; the gas-liquid separation layer 12 and the bottom of the outer shell 11 enclose an inner cavity 14, and an outer cavity 13 is formed between the gas-liquid separation layer 12 and the inner wall of the outer shell 11; wherein, the inner cavity 14 contains a hydrogen production module to form a liquid hydrogen generation zone; the hydrogen generated from the liquid hydrogen generation zone enters the outer cavity 13 through the gas-liquid separation layer 12; the outlet module 4 passes through the outer shell 11 and enters the outer cavity 13.

[0045] The inner cavity 14 enclosed within the gas-liquid separation layer 12 is used to house the hydrogen production module, so that the hydrogen production module can produce hydrogen within the inner cavity 14. The produced hydrogen can pass through the gas-liquid separation layer 12 into the outer cavity 13, and after the hydrogen is initially buffered in the outer cavity 13, it can be exported through the export module 4 to provide storage buffer space for the subsequently produced hydrogen.

[0046] By setting up the gas-liquid separation layer 12, the liquid culture medium and hydrogen can be effectively separated, avoiding interference from the liquid culture medium on the hydrogen collection and export process, ensuring that hydrogen can be exported smoothly, and improving the purity and efficiency of hydrogen collection.

[0047] Furthermore, the gas-liquid separation layer 12 divides the interior of the generator base 1 into an inner cavity 14 and an outer cavity 13, which rationally plans the placement space of the hydrogen production module and the hydrogen transmission path, which is conducive to the orderly progress of the entire hydrogen production process and improves the overall performance of the device.

[0048] Please see Figure 1 In some embodiments, the gas-liquid separation layer 12 is a PTFE hollow fiber membrane, and the PTFE hollow fiber membrane has through holes with a pore size of 0.1μm-0.02μm.

[0049] By rationally setting the aperture of the through holes on the gas-liquid separation layer 12, hydrogen molecules can be effectively allowed to pass through, while preventing liquid substances from entering the outer cavity 13 and affecting hydrogen output. This achieves efficient gas-liquid separation, ensures the purity of the output hydrogen, and helps improve the hydrogen production effect of the entire device.

[0050] Please see Figure 1 For example, the porosity of the through-holes in the PTFE hollow fiber membrane is not less than 75%, and the filling density of the PTFE hollow fiber membrane is not less than 50%.

[0051] The high porosity ensures that hydrogen has sufficient channels to pass through the gas-liquid separation layer 12. By setting the packing density, the structural stability of the gas-liquid separation layer 12 can be guaranteed, avoiding problems such as damage or leakage of the gas-liquid separation layer 12. This is conducive to achieving efficient gas-liquid separation in a long-term stable manner, ensuring the stable operation of the hydrogen production unit and the quality of hydrogen production.

[0052] Please see Figure 1 In some embodiments, the outer shell 11 includes a support base 111, a middle support layer 112, and a cover plate 113; the bottom of the middle support layer 112 is fixed on the support base 111, and the top extends upward; the middle support layer 112 has a downward-opening annular structure; the outgoing module 4 passes through the middle support layer 112 and enters the outer cavity 13; the cover plate 113 covers and is fixed on the middle support layer 112, and the top of the cover plate 113 is provided with a light-transmitting hole 1131.

[0053] The support base 111 ensures the stability of the overall device. The middle support layer 112 is connected to the support base 111 and the cover plate 113 to form the outer shell 11, which can be easily installed and processed. In addition, the closed outer shell 11 can help prevent hydrogen leakage and maintain the stability of the internal hydrogen production environment.

[0054] By setting a cover plate 113, a light-passing hole 1131 is provided on the cover plate 113 and a light guide plate is installed, while ensuring the stability of the outer shell 11.

[0055] Please see Figure 1 For example, the middle support layer 112 is a light-transmitting layer, and the middle support layer 112 is sealed to the support base 111 and the cover plate 113.

[0056] By setting the central support layer 112 as a light-transmitting layer, it is possible to ensure that the light emitted by the light box 2 can pass through to the hydrogen production module, while also meeting the structural support requirements of the device. It also facilitates observation of the status of the internal hydrogen production module from the outside, thereby effectively controlling external conditions such as illumination and ensuring the stable operation of the hydrogen production device and the effective utilization of light energy.

[0057] The central support layer 112 is sealed to the support base 111 and the cover plate 113, which can prevent hydrogen leakage and help improve the safety of the hydrogen production process.

[0058] Specifically, the connection between the central support layer 112, the support base 111, and the cover plate 113 is sealed with sealant; furthermore, a sealing ring can be provided at the connection to ensure the sealing performance of the outer shell 11 and improve the safety of the manufacturing process.

[0059] Please see Figure 1In some possible embodiments, the output module 4 includes an output pipe 41, a gas storage device 43, and a control component; the inlet end of the output pipe 41 extends into the generator base 1; a first control valve 42 is provided on the output pipe 41; the gas storage device 43 is connected to the outlet end of the output pipe 41; the control component is located at the bottom of the generator base 1 and is electrically connected to the first control valve 42.

[0060] The inlet end of the outlet pipe 41 extends into the generator base 1 to outlet the generated hydrogen gas. The outlet flow rate of the hydrogen gas can be effectively controlled by setting the first control valve 42. The gas storage device 43 is used to store hydrogen gas. The control component is electrically connected to the first control valve 42 and can flexibly control the outlet process of hydrogen gas as needed, realize effective management of hydrogen outlet, and ensure the safety and efficiency of hydrogen collection and storage.

[0061] Specifically, the control component is a structure integrated from multiple control elements, and the control principle and specific structure of each control element are existing technologies; specifically, the control component uses a PID algorithm to control the differential pressure fluctuation within ±0.3 kPa; specifically, the control component adjusts the hydrogen discharge on the outlet pipeline 41 by controlling the first control valve 42.

[0062] Please see Figure 1 In some embodiments, a pressure sensor 44 is also provided on the outlet pipe 41, and the pressure sensor 44 is electrically connected to the control component.

[0063] By setting a pressure sensor 44, the hydrogen pressure on the outlet pipeline 41 can be monitored in real time. The control component is electrically connected to the pressure sensor 44 and can receive and collect the gas pressure on the outlet pipeline 41 in real time. Furthermore, the control component can effectively monitor the gas pressure through the pressure sensor 44 and adjust the gas flow rate on the outlet pipeline 41 through the first control valve 42, thereby adjusting the gas pressure on the gas pipeline and realizing closed-loop control of the gas pressure on the gas pipeline.

[0064] Optionally, the pressure sensor 44 is a MEMS piezoresistive pressure sensor with a range of 0-20 kPa and an accuracy of ±0.5 kPa, which can monitor the pressure in real time; the first control valve 42 is a stepper motor driven regulating valve with a response time of less than 0.5 s and a rapid response, which can adjust the pressure according to the feedback from the pressure sensor 44.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biohydrogen generation device, characterized in that, include: The generator base (1) contains a hydrogen production module; a hydrogen export module (4) for exporting hydrogen is also connected to one side of the generator base (1); the top of the generator base (1) is provided with a light-transmitting hole (1131) corresponding to the hydrogen production module. A light box (2) is disposed on the top of the generator base (1); the light-emitting part of the light box (2) is disposed downward toward the light-transmitting hole (1131); and A light guide assembly (3) is disposed between the light-transmitting hole (1131) and the light-emitting part of the light box (2). The light guide assembly (3) includes multiple layers of light guide plates (31) spaced apart vertically. Each layer of the light guide plate (31) is covered with a wavelength selective reflective layer (32). The wavelength selective reflective layer (32) is used to filter effective light segments, and the light guide plate (31) is used to uniformly distribute light energy.

2. The biohydrogen generation device as described in claim 1, characterized in that, The light guide plate (31) is provided in two sets. One set of the light guide plate (31) is located at the light transmission hole (1131) and is connected to the top wall of the generator base (1). The other set of the light guide plate (31) is covered on the light-emitting part of the lamp box (2) and is fixedly connected to the lamp box (2).

3. The biohydrogen generation device as described in claim 1 or 2, characterized in that, The light guide plate (31) is a honeycomb light guide plate, and the wavelength selective reflective layer (32) is a deposited film structure; multiple layers of the wavelength selective reflective layer (32) are deposited on each honeycomb light guide plate.

4. The biohydrogen generation device as described in claim 1, characterized in that, The generator base (1) includes: The outer casing (11) has the light-transmitting hole (1131) on its top; A gas-liquid separation layer (12) is disposed inside the outer shell (11); the gas-liquid separation layer (12) has a box-shaped structure with an opening facing downward and covers the bottom of the outer shell (11); the gas-liquid separation layer (12) and the bottom of the outer shell (11) form an inner cavity (14), and an outer cavity (13) is formed between the gas-liquid separation layer (12) and the inner wall of the outer shell (11); The inner cavity (14) contains the hydrogen production module to form a liquid hydrogen generation zone; the hydrogen generated from the liquid hydrogen generation zone enters the outer cavity (13) through the gas-liquid separation layer (12); the outlet module (4) passes through the outer shell (11) and enters the outer cavity (13).

5. The biohydrogen generation device as described in claim 4, characterized in that, The gas-liquid separation layer (12) is a PTFE hollow fiber membrane, and the PTFE hollow fiber membrane is provided with through holes with a pore size of 0.1μm-0.02μm.

6. The biohydrogen generation device as described in claim 5, characterized in that, The porosity of the through-holes in the PTFE hollow fiber membrane is not less than 75%, and the filling density of the PTFE hollow fiber membrane is not less than 50%.

7. The biohydrogen generation device as described in claim 4, characterized in that, The outer casing (11) includes: Support base (111); The middle support layer (112) is fixed at the bottom to the support base (111) and extends upward at the top; the middle support layer (112) has a downward-opening annular structure; the outlet module (4) passes through the middle support layer (112) and enters the outer cavity (13); A cover plate (113) is placed on and fixed to the middle support layer (112), and the top of the cover plate (113) is provided with the light-transmitting hole (1131).

8. The biohydrogen generation device as described in claim 7, characterized in that, The central support layer (112) is a light-transmitting layer, and the central support layer (112) is sealed to the support base (111) and the cover plate (113).

9. The biohydrogen generation device as described in claim 1, characterized in that, The export module (4) includes: The outlet pipe (41) has its inlet end extending into the generator base (1); a first control valve (42) is provided on the outlet pipe (41); Gas storage device (43) is connected to the outlet end of the outlet pipe (41); and The control component is located at the bottom of the generator base (1) and is electrically connected to the first control valve (42).

10. The biohydrogen generation device as described in claim 9, characterized in that, The outlet pipe (41) is also equipped with a pressure sensor (44), which is electrically connected to the control component.

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