Closed reactor for realizing microalgae photochemical reaction
By designing a closed reactor, using reflectors and thermally dimmed glass to uniformly distribute light, and supplementing light with fluorescent tubes, the problem that microalgae culturers cannot cultivate and regulate the environment in large quantities is solved, and the efficient photochemical reaction of microalgae is achieved and Grow.
Patent Information
- Application Number
- CN202421000911.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Existing microalgae culturers cannot cultivate a large number of microalgae at the same time, and it is difficult to regulate the external environment and growth conditions of the microalgae, resulting in slow growth of microalgae.
A closed reactor was designed, including a rectangular reaction box and support, equipped with a reflector and a thermodimming glass for evenly distributing light and replenishing light through fluorescent tubes; at the same time, an oxygen collection tube and sensor are installed to monitor and regulate the growth environment of algae.
The efficient photochemical reaction of microalgae is achieved, the biomass accumulation and growth rate of microalgae is improved, and the microalgae can be stably cultivated under different light conditions, enhancing the ability to regulate the external environment.
Smart Images
Figure CN222250715U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of microalgae cultivation, and in particular relates to a closed reactor for realizing microalgae photochemical reaction. Background Art
[0002] Microalgae, an ancient life form, is the main creator of oxygen in the process of the earth's evolution, the common primitive ancestor in the evolution of higher plants, the producer of nearly 90% of the oxygen in the earth's ecosystem, and the main contributor to primary productivity. It is ubiquitous, "all-powerful", and "involved" in multiple industries. Microalgae is a type of autotrophic organism with high photosynthetic efficiency and fast growth rate. It has a single-cell structure and usually proliferates by binary fission. It has a short cell cycle and is easy to cultivate and has strong adaptability. Microalgae can use simple elements to synthesize biologically active substances with unique structures and physiological functions, which has attracted widespread attention in human production and life.
[0003] In order to obtain high biomass and product accumulation at the same time, researchers have proposed a two-stage cultivation technology in recent years. By separating the two periods of microalgae growth and product accumulation, high microalgae biomass and product content can be obtained. This model is divided into two stages. In stage I, a large amount of microalgae biomass is obtained by optimizing growth conditions, and then the microalgae cells are collected. In stage II, the production of metabolites in microalgae cells is enhanced by changing the growth mode (photoautotrophy, heterotrophy and mixing), operation mode (batch, semi-batch, fed-batch and continuous culture), physical and chemical conditions (nutrients, light intensity, salinity, temperature and pH value). In terms of engineering, it includes the optimization of optimal culture conditions and parameters and the design of efficient PBR. The mainstream outdoor large-scale cultivation system of microalgae (suspension and immobilization), and typical reactors such as circular ponds, raceway pools, flat-plate and pipeline PBRs are relatively mature. Designing and developing new and efficient reactors and cultivation systems is the top priority to promote the large-scale cultivation and technological development of microalgae.
[0004] According to whether the microalgae culture medium is in direct contact with the external environment, it can be divided into two categories: open and closed. Open PBRs such as aquariums, racetracks and circular ponds (the concept of PBR was first proposed in the 1950s, i.e., a device that can cultivate photosynthetic algae, or cells or tissues with photosynthetic ability) are widely used in the industrial cultivation of Spirulina, Chlorella and Dunaliella due to their simple construction, low cost and easy operation. Closed PBRs are generally inoculated with algae in a closed container and cultured in an artificial closed environment. Compared with open, the culture conditions are more stable, not affected by the external environment, and aseptic operation and high-density culture can be achieved, saving land, which has become an important development direction of PBR in the future. However, for the culture devices existing in the prior art, only a small amount of multiple batches can be cultivated, and the number of microalgae cultured cannot be increased. In addition, the regulation degree during the microalgae cultivation process is low, and the external environment and indicators of the microalgae cannot be adjusted, resulting in slow growth of the microalgae. Utility Model Content
[0005] The utility model aims to provide a closed reactor for realizing photochemical reaction of microalgae, so as to solve the problems that a large amount of microalgae cannot be cultured at the same time and the external environment and indicators of the microalgae are difficult to regulate.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed reactor for realizing photochemical reaction of microalgae, comprising a reaction box and a support part, wherein the support part is fixedly installed on the lower side of the reaction box, and the reaction box is provided with a liquid inlet and a liquid outlet, and the outer walls on opposite sides of the reaction box are respectively provided with a reflective plate and a thermo-sensitive dimming glass, and fluorescent tubes are respectively provided on both sides of the thermo-sensitive dimming glass.
[0007] Preferably, the support portion includes a support seat, columns and a crossbeam frame, the reaction box is fixedly mounted on the support seat, the columns are fixedly mounted in a rectangular array on the outer wall of the lower side of the support seat, and the crossbeam frame is fixedly mounted between two adjacent columns.
[0008] Preferably, an air inlet pipe is provided on the outer wall of the lower side of the reaction box, the air inlet pipe is perpendicular to the reaction box, and one end of the air inlet pipe is fixedly connected to an extension pipe, and the air inlet pipe is fixedly installed at the central axis of the extension pipe.
[0009] Preferably, the extension tube is parallel to the reaction box, the upper ends of the extension tubes extend to the interior of the reaction box, and the two ports are at different heights, and one-way valves are respectively provided at the ports of the extension tubes.
[0010] Preferably, an oxygen collecting tube is provided on the reaction box, and the upper end of the oxygen collecting tube extends to the outside of the reaction box.
[0011] Preferably, a sensor is provided on the reaction box, and the sensor is located on one side of the oxygen collection pipe.
[0012] Preferably, a lamp body support is fixedly mounted on the reaction box, the lamp body support is fixedly connected to the fluorescent lamp tube, and the lamp body support is located on both sides of the thermo-dimming glass.
[0013] Preferably, a cleaning port is provided on the reaction box, and the cleaning port is located on the outer walls on two opposite sides adjacent to the thermo-modulated glass.
[0014] Preferably, one end of the liquid inlet is fixedly connected to a liquid inlet pipe, one end of the liquid outlet is provided with a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are respectively provided with solenoid valves.
[0015] The technical effects and advantages of the utility model are as follows: the reaction box is a rectangular hollow frame, and a rectangular box body is formed by the reflective plates and thermo-dimming glass arranged on both sides. When cultivating microalgae, the culture medium and the algae mixed liquid enter the reaction box through the feed port. When the microalgae undergo light reaction, the light is transmitted through the culture medium mixed liquid to the reflective plate, and then refracted onto the culture medium, so that the microalgae in the culture medium mixed solution can obtain more light, and the light distribution can be guaranteed to be uniform; the thermo-dimming glass can adjust the light transmittance of the glass according to the temperature, thereby affecting the temperature of the culture medium mixed solution in the reaction box; after a certain culture period and after obtaining algae with qualified indicators, the culture medium mixed liquid can be discharged through the liquid outlet, and in order to make up for the lack of light at night or in rainy weather, the fluorescent tube can be turned on to increase the light. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the internal structure of the reaction box of the utility model;
[0017] Figure 2 This is a schematic diagram of the installation of the reflector of the utility model;
[0018] Figure 3 This is a schematic diagram of the installation of the air intake pipe of the utility model;
[0019] Figure 4 This is a schematic diagram of multiple groups of uses of the utility model.
[0020] In the figure: 1. reaction box; 2. support part; 21. support seat; 22. column; 23. crossbeam frame; 3. liquid inlet; 4. liquid outlet; 5. reflector; 6. thermo-dimming glass; 7. fluorescent tube; 8. air inlet pipe; 9. extension pipe; 10. one-way valve; 11. oxygen collection pipe; 12. sensor; 13. lamp body support; 14. cleaning port; 15. liquid inlet pipe; 16. liquid outlet pipe; 17. solenoid valve. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] The utility model provides Figure 1-3 A closed reactor for realizing photochemical reaction of microalgae shown in the figure comprises a reaction box 1 and a support part 2, the support part 2 is fixedly mounted on the lower side of the reaction box 1, a liquid inlet 3 and a liquid outlet 4 are arranged on the reaction box 1, a reflector 5 and a thermo-modulated glass 6 are arranged on the outer walls on opposite sides of the reaction box 1, and fluorescent tubes 7 are arranged on both sides of the thermo-modulated glass 6. A lamp body support 13 is arranged on the reaction box 1, the lamp body support 13 is fixedly connected to the fluorescent tube 7, and the lamp body support 13 is fixedly mounted on the reaction box 1 and is located on both sides of the thermo-modulated glass 6. The reaction box 1 is a rectangular hollow frame, and a rectangular box is formed by five reflectors and thermo-dimming glasses 6 arranged on both sides. When cultivating microalgae, the culture medium and algae mixed liquid enter the reaction box 1 through the feed port. When the microalgae undergo light reaction, the reflector 5 transmits light through the culture medium mixed liquid, transmits light to the reflector 5, transmits light to the reflector 5, and then refracts to the culture medium, so that the microalgae in the culture medium mixed solution can obtain more light, and the light distribution can be guaranteed to be uniform; the thermo-dimming glass 6 can adjust the light transmittance of the glass according to the temperature, thereby affecting the temperature of the culture medium mixed solution in the reaction box 1; after a certain culture period and after obtaining algae with qualified indicators, the culture medium mixed liquid can be discharged through the liquid outlet 4, and in order to make up for the lack of light at night or in rainy weather, the fluorescent lamp 7 can be turned on to increase the light. In addition, multiple reaction boxes 1 can be connected at the same time, and a feed port is set on the lower side. By connecting electric valves in series on the liquid inlet pipe 15 and the liquid outlet pipe 16 respectively, the liquid inlet or liquid outlet of the multiple reaction boxes 1 can be controlled, and multiple groups of microalgae can be cultivated at the same time.
[0023] The culture medium mixed solution containing microalgae enters the reaction box 1 through the liquid inlet pipe 15. The microalgae realizes the conversion of light energy and the fixation of carbon dioxide through the light and carbon dioxide entering the reaction box 1. This process is carried out in the microalgae cells. In the light reaction stage, the light entering the culture medium mixed solution can be adjusted by cooperating with the fluorescent lamp 7 tube. The photosynthetic pigments in the microalgae cells, such as chlorophyll a, chlorophyll b and carotenoids, absorb light energy. These photosynthetic pigments are located on the thylakoid membrane of the chloroplast. They can capture light energy and convert it into active chemical energy. In this process, water is photolyzed to produce oxygen, and the oxygen is discharged from the inside of the reaction box 1 through the oxygen collection pipe 11 on the upper side of the reaction box 1. At the same time, the light energy is converted into ATP and NADPH, providing energy and reducing agents for the dark reaction, so as to facilitate the cultivation of microalgae.
[0024] Specifically, the support part 2 includes a support seat 21, a column 22 and a crossbeam frame 23. The reaction box 1 is fixedly installed on the support seat 21. The columns 22 are fixedly installed on the outer wall of the lower side of the support seat 21 in a rectangular array. The crossbeam frame 23 is fixedly installed between two adjacent columns 22. Figure 3 As shown, the support seat 21 is a rectangle that conforms to the size of the reaction box 1, and upward L-shaped protrusions are respectively provided at the four corners to stabilize the four walls of the reaction box 1. The two longitudinal outer walls are respectively H-shaped through the two sides of the crossbeam frame 23 to reinforce the support seat 21. The liquid inlet pipe 15 and the liquid outlet pipe 16 are located laterally between the two columns 22. While fixing the reaction box 1, space can be provided for the connection of the air inlet pipe 8, the liquid inlet pipe 15, and the liquid outlet pipe 16.
[0025] Specifically, the outer wall of the lower side of the reaction box 1 is provided with an air inlet pipe 8, which is perpendicular to the reaction box 1 and fixedly connected to an extension pipe 9 at one end. The air inlet pipe 8 is fixedly installed at the central axis of the extension pipe 9. The extension pipe 9 is parallel to the reaction box 1, and the upper ends of the extension pipe 9 extend to the interior of the reaction box 1. The heights of the two ports are not the same, and one-way valves 10 are respectively provided at the ports of the extension pipe 9. One end of the liquid inlet 3 is fixedly connected to a liquid inlet pipe 15, and one end of the liquid outlet 4 is provided with a liquid outlet pipe 16. The liquid inlet pipe 15 and the liquid outlet pipe 16 are respectively provided with solenoid valves 17. Please refer to the attached Figure 1 As shown, the extension tube 9 extends to the interior of the reaction box 1 and presents a "U"-shaped structure parallel to the reaction box 1. The air inlet pipe 8 transports gas to the extension tube 9, and supplies the culture rack mixed liquid in the reaction box 1 with air containing carbon dioxide gas, post-combustion gas, etc., which are necessary for algae light and reaction. There are two ways to connect. When a single reaction box 1 is used, it can be directly controlled; when multiple reaction boxes 1 are connected in series (such as Figure 4 As shown in FIG. 1 , a plurality of reaction boxes 1 can be connected via a three-way connection for batch culture of microalgae.
[0026] Specifically, the reaction box 1 is provided with an oxygen collecting pipe 11, and the upper end of the oxygen collecting pipe 11 extends to the outside of the reaction box 1. The reaction box 1 is provided with a sensor 12, and the sensor 12 is located on one side of the oxygen collecting pipe 11. Figure 1 As shown, a breathable membrane is provided at the port of the oxygen collecting tube 11, and the oxygen produced by photosynthesis in the reaction box 1 is filtered through the breathable membrane and gathered into the oxygen collecting tube 11, and can be released naturally or connected to a tank for collection. A sensor 12 is provided on the reaction box 1, and the sensor 12 is divided into two groups, which measure three indicators: pH with temperature indicator, and dissolved oxygen. pH and temperature provide important basis for judging the growth environment of algae, and dissolved oxygen provides basis for judging the growth state of algae. The sensor 12 can better provide a good cultivation environment for algae.
[0027] Specifically, the reaction box 1 is provided with a cleaning port 14, which is located on the outer walls of the adjacent thermo-modulated glass 6 on opposite sides. Figure 1 As shown, the automatic cleaning port 14 is a fan-shaped atomizing nozzle, and the opposite sides are arranged on the opposite sides of the reaction box 1. The inner wall of the reaction box 1 is disinfected during the first use, and the culture medium mixture is discharged after the algae mature. The interior of the reaction box 1 is cleaned and disinfected through the automatic cleaning port 14.
[0028] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 utility model shall be included in the protection scope of the present utility model.
Claims
1. A closed reactor for realizing photochemical reaction of microalgae, characterized in that: The invention comprises a reaction box (1) and a support part (2), wherein the support part (2) is fixedly mounted on the lower side of the reaction box (1), and the reaction box (1) is provided with a liquid inlet (3) and a liquid outlet (4). The outer walls of the reaction box (1) on opposite sides are respectively provided with a reflector (5) and a thermo-sensitive dimming glass (6), and fluorescent tubes (7) are respectively provided on both sides of the thermo-sensitive dimming glass (6).
2. A closed reactor for realizing photochemical reaction of microalgae according to claim 1, characterized in that: The support portion (2) comprises a support seat (21), columns (22) and a crossbeam frame (23); the reaction box (1) is fixedly mounted on the support seat (21); the columns (22) are fixedly mounted on the outer wall of the lower side of the support seat (21) in a rectangular array; and the crossbeam frame (23) is fixedly mounted between two adjacent columns (22).
3. A closed reactor for realizing photochemical reaction of microalgae according to claim 1, characterized in that: An air intake pipe (8) is provided on the outer wall of the lower side of the reaction box (1). The air intake pipe (8) is perpendicular to the reaction box (1) and one end of the air intake pipe is fixedly connected to an extension pipe (9). The air intake pipe (8) is fixedly installed at the center axis of the extension pipe (9).
4. A closed reactor for realizing photochemical reaction of microalgae according to claim 3, characterized in that: The extension tube (9) is parallel to the reaction box (1), the upper end of the extension tube (9) extends to the interior of the reaction box (1), and the heights of the two ports are different. One-way valves (10) are respectively provided at the ports of the extension tube (9).
5. A closed reactor for realizing photochemical reaction of microalgae according to claim 1, characterized in that: The reaction box (1) is provided with an oxygen collection pipe (11), and the upper end of the oxygen collection pipe (11) extends to the outside of the reaction box (1).
6. A closed reactor for realizing photochemical reaction of microalgae according to claim 5, characterized in that: The reaction box (1) is provided with a sensor (12), and the sensor (12) is located on one side of the oxygen collection pipe (11).
7. A closed reactor for realizing photochemical reaction of microalgae according to claim 1, characterized in that: A lamp body support (13) is fixedly mounted on the reaction box (1), the lamp body support (13) is fixedly connected to the fluorescent lamp tube (7), and the lamp body support (13) is located on both sides of the thermo-modulated glass (6).
8. The closed reactor for realizing photochemical reaction of microalgae according to claim 1, characterized in that: The reaction box (1) is provided with a cleaning port (14), and the cleaning port (14) is located on the outer walls on opposite sides of the adjacent thermo-modulated glass (6).
9. The closed reactor for realizing photochemical reaction of microalgae according to claim 1, characterized in that: One end of the liquid inlet (3) is fixedly connected to a liquid inlet pipe (15), one end of the liquid outlet (4) is provided with a liquid outlet pipe (16), and solenoid valves (17) are respectively provided on the liquid inlet pipe (15) and the liquid outlet pipe (16).