Fermentation system capable of efficiently recycling gas

Abstract

The utility model discloses a fermentation system capable of efficiently recycling gas. The fermentation system comprises a gas storage device, a gas inlet pump, a gas outlet pump, a gas inlet electromagnetic valve and a gas outlet electromagnetic valve, the air inlet electromagnetic valve is connected with an air inlet pump, and the air outlet electromagnetic valve is connected with an air outlet pump; the gas storage device is respectively connected with the gas inlet pump and the gas outlet pump through pipelines; the system further comprises a fermentation module, the fermentation module is formed by connecting three fermentation tanks in series, and the fermentation tanks are respectively connected with the air inlet electromagnetic valve and the air outlet electromagnetic valve; a detection device is arranged on the fermentation tank and comprises a sensor and a control module communicated with the sensor. The carbon dioxide utilization efficiency and the photosynthesis efficiency of photosynthetic bacteria can be improved, the temperature and the PH value in the fermentation tank can be intelligently adjusted, and the fermentation process is safe, environmentally friendly, energy-saving and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of bioreactors, in particular to a fermentation system for efficient gas recycling. Background Art

[0002] In the field of modern biotechnology, bioreactors, as key equipment for cultivating microorganisms, animal and plant cells and other organisms, play a vital role in the research and development and production of biological products. Especially in the cultivation process of photosynthetic bacteria, the design of bioreactors is directly related to the efficiency of bacterial growth, the output of metabolites and the controllability of the entire fermentation process.

[0003] Photosynthetic bacteria, as a microorganism that can use inorganic substances for photosynthesis under light conditions, show wide application potential in environmental governance, bioenergy production and the synthesis of high-value compounds. However, existing bioreactors have some limitations in adapting to the growth of photosynthetic bacteria. First, the supply mode of carbon dioxide as a carbon source required for the growth of photosynthetic bacteria is relatively single and not easily soluble in water, which limits the recycling efficiency of carbon dioxide. Secondly, due to the unevenness of the external light source, the lighting conditions inside the fermentation tank are uneven, which affects the photosynthetic efficiency of photosynthetic bacteria. In addition, the existing bioreactors also have certain deficiencies in temperature control, pH adjustment, etc., which are difficult to meet the strict requirements of photosynthetic bacteria for the growth environment.

[0004] In view of the above problems, those skilled in the art have conducted a lot of research and exploration. Some researchers have tried to provide more uniform lighting conditions by improving the structural design of bioreactors and adding internal light source systems. Some researchers are also committed to developing new carbon dioxide supply technologies to improve the solubility and utilization rate of carbon dioxide. However, these improvement measures are often limited to the optimization of a single aspect, and it is difficult to achieve comprehensive optimization of the growth environment of photosynthetic bacteria.

[0005] In addition, existing bioreactors also face many challenges during the scale-up process. Due to the significant differences in fluid dynamics, heat and mass transfer characteristics of bioreactors of different sizes, it is difficult to directly scale up laboratory-scale bioreactors to industrial production scale. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the existing bioreactor has a single supply mode of carbon dioxide as a carbon source, and it is not easily soluble in water, the recycling efficiency of carbon dioxide is limited, and the uneven lighting conditions affect the photosynthetic efficiency of photosynthetic bacteria. The existing bioreactor also has certain deficiencies in temperature control and pH adjustment, and it is difficult to meet the strict requirements of photosynthetic bacteria for the growth environment. The utility model can achieve the optimization of the carbon dioxide circulation system and the intelligent adjustment of lighting, temperature and pH value.

[0007] This allows the fermentation status and environment to be effectively monitored in real time, making the fermentation process safe, environmentally friendly, energy-efficient and efficient.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A fermentation system for efficient gas recycling, comprising a gas storage device, an air intake pump, an air outlet pump, an air intake solenoid valve and an air outlet solenoid valve; the air intake solenoid valve is connected to the air intake pump, and the air outlet solenoid valve is connected to the air outlet pump; the gas storage device is connected to the air intake pump and the air outlet pump respectively through pipelines; also includes a fermentation module, the fermentation module is composed of three fermentation tanks connected in series, and the fermentation tanks are respectively connected to the air intake solenoid valve and the air outlet solenoid valve; the fermentation tank is provided with a detection device, the detection device comprises a sensor and a control module connected to the sensor.

[0010] Furthermore, the fermentation tank body is provided with a feed port, an inoculation port, an air inlet pipe, an air outlet pipe, a lighting device and a stirring device.

[0011] Furthermore, the control module includes a pH regulator, a CO2 concentration regulator, a temperature regulator and a light regulator.

[0012] Furthermore, the sensors include a pH sensor, a temperature sensor, a photometric sensor and a CO2 concentration sensor.

[0013] Furthermore, the sensor is provided with a CO2 electrode, a temperature and a photometric electrode, the CO2 electrode is connected to a CO2 concentration regulator, and the temperature and the photometric electrode are connected to the temperature regulator and the light regulator.

[0014] Furthermore, the control module controls the start and stop of the air intake solenoid valve and the air outlet solenoid valve through output signals.

[0015] Furthermore, the lighting device includes a glass tube, an LED light group, a sealing ring and a built-in fixing plate.

[0016] Furthermore, a condensation hood is provided outside the fermentation tank.

[0017] Furthermore, the gas storage device is a special large-capacity air bag.

[0018] Furthermore, there are 4 to 8 lighting devices distributed on the side walls of the fermentation tank.

[0019] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0020] 1. The utility model forms a combined fermentation module by connecting three fermentation tanks in series. This design ensures that the carbon dioxide stays in the fermentation tank module for a sufficient amount of time, realizes the gradient absorption of carbon dioxide, and thus improves the overall carbon dioxide utilization efficiency.

[0021] 2. The utility model adjusts the CO2 flow rate and flow rate into each fermentation tank by intelligently controlling the solenoid valve and the air pump, thereby realizing efficient recycling of carbon dioxide.

[0022] 3. The utility model realizes accurate control of each point in the series fermentation tanks through sensors and control modules connected to the sensors, thereby ensuring the stability of the fermentation process.

[0023] 4. The utility model adds a condensation hood to better control the temperature during the fermentation process. By maintaining a constant fermentation temperature, the change in carbon dioxide solubility caused by temperature fluctuations is reduced, ensuring the stability of microbial growth and the fermentation process.

[0024] 5. The utility model realizes uniform lighting conditions inside the fermentation tank by setting up multiple lighting devices, thereby improving the photosynthesis efficiency of photosynthetic bacteria.

[0025] 6. The utility model realizes intelligent control, the fermentation process is safe, environmentally friendly, energy-saving and efficient, and the laboratory-scale biological reaction system of the utility model can be directly enlarged to an industrial production scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some implementation examples of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 System diagram of the utility model's efficient gas utilization fermentation system;

[0028] Figure 2 Three-sided structural view of the fermentation tank of the utility model;

[0029] Figure 3 Axonometric drawing of the fermentation tank of the utility model;

[0030] Figure 4 A schematic diagram of the structure of the lighting device of the present invention (taking the fermentation tank 11-1 as an example);

[0031] Among them, 1. feed port; 2. inoculation port; 3. lighting device; 4. CO2 electrode; 5. temperature and photometry electrode; 6. stirring device; 7. air inlet pipe; 8. tank body; 9. condensation cover; 12. air outlet pipe;

[0032] 3-1, glass tube; 3-2, LED light assembly; 3-3, sealing ring; 3-4, built-in fixing plate;

[0033] 10-1, gas storage device; 10-2, air intake pump; 10-3, air outlet pump; 10-4, air intake solenoid valve; 10-5, air outlet solenoid valve;

[0034] 11-1, 11-2, 11-3, small fermentation tanks. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Example 1

[0036] like Figure 1 and Figure 2 As shown, the utility model provides a fermentation system for efficient gas recycling, which includes a gas storage device 10-1, an air intake pump 10-2, an air outlet pump 10-3, an air intake solenoid valve 10-4, and an air outlet solenoid valve 10-5; the air intake solenoid valve 10-4 is connected to the air intake pump 10-2, and the air outlet solenoid valve 10-5 is connected to the air outlet pump 10-3; the gas storage device 10-1 is connected to the air intake pump 10-2 and the air outlet pump 10-3 through pipelines. The gas storage device described in the utility model is a large-capacity air bag, which is convenient to move and place compared to a gas tank.

[0037] The fermentation system of the utility model also includes a fermentation module, which is composed of three fermentation tanks 11-1, 11-2, and 11-3 connected in series; and the fermentation tanks are respectively connected to the air inlet solenoid valve 10-4 and the air outlet solenoid valve 10-5. The tank body 8 of each fermentation tank is provided with a feed port 1, an inoculation port 2, an air inlet pipe 7, an air outlet pipe 12, a lighting device 3 and a stirring device 6. If the part of carbon dioxide that is not completely absorbed in the first fermentation tank can continue to be absorbed in the subsequent tank body, this design prolongs the residence time of carbon dioxide in the fermentation tank module, which not only improves the total absorption rate of carbon dioxide, but also reduces the waste of gas.

[0038] The stirring device 6 generates shear force to break up the carbon dioxide bubbles entering the tank body 8, thereby increasing the contact area between the gas and the fermentation liquid. The air inlet pipe 7 in the tank works in conjunction with the stirring device 6 to ensure that the gas is evenly dispersed in the fermentation liquid. The solubility enhancement mechanism coordinated by the stirring device 6 and the air inlet pipe 7 not only promotes the dispersion of the gas by breaking up the bubbles, but also reduces the local concentration gradient by increasing the turbulence intensity of the fermentation liquid, further improves the solubility of carbon dioxide, improves the mass transfer efficiency, and realizes the gradient absorption of carbon dioxide, thereby improving the overall carbon dioxide utilization efficiency. In addition, the stirring device 6 can make the fermentation liquid flow continuously and evenly, which is beneficial for the photosynthetic bacteria in each part to obtain sufficient light intensity, which is beneficial to the fermentation of photosynthetic bacteria.

[0039] The fermentation tank is also provided with a detection device, which includes a sensor and a control module connected with the sensor.

[0040] The control module includes a pH regulator, a CO2 concentration regulator, a temperature regulator and a light regulator. The sensor includes a pH sensor, a temperature sensor, a photometric sensor and a CO2 concentration sensor. The sensor is provided with a carbon dioxide electrode 4 and a temperature and photometric electrode 5. The carbon dioxide electrode is connected to the CO2 concentration regulator, and the temperature and photometric electrode is connected to the temperature regulator and the light regulator. The detection signal of the sensor is transmitted to the control module. The control module controls the start and stop of the air inlet solenoid valve 10-4 and the air outlet solenoid valve 10-5 through the output signal according to these data, so as to intelligently adjust the CO2 flow rate and flow rate entering the fermentation tank.

[0041] The lighting device includes a glass tube 3-1, an LED light group 3-2, a sealing ring 3-3 and an internal fixing plate 3-4. Each glass tube has 8 groups of LED light groups 3-2 arranged side by side on an internal fixing plate 3-4, each group of LED light groups 3-2 is composed of 6 LED lights, and the eight groups of LED light groups light up at intervals as needed to provide appropriate light intensity.

[0042] A condensation hood 9 is provided outside the tank body 8 of the fermentation tank. The setting of the condensation hood 9 can control the temperature inside the fermentation tank within an appropriate range, avoid the adverse effects of excessive temperature on the growth of microorganisms and the fermentation process, and ensure that the temperature and environmental conditions of the fermentation process are effectively controlled.

[0043] When the fermentation system of the utility model is working, culture medium is first added to the fermentation tank through the feed port 1, and then photosynthetic bacteria are inoculated into the fermentation tank through the inoculation port 2. Next, the stirring device 6 is started to ensure the uniformity of the fermentation liquid, and the illumination device 3 is turned on to provide suitable illumination conditions for the photosynthetic bacteria. The CO2 concentration, temperature, light intensity and pH value during the fermentation process are monitored by the carbon dioxide electrode 4 and the temperature and photometric electrode 5, and the sensor transmits these data to the control module. Based on these data, the control module intelligently controls the CO2 flow rate and flow in the fermentation tank by adjusting the CO2 concentration regulator, the air inlet solenoid valve 10-4, the air outlet solenoid valve 10-5, the air inlet pump 10-2, and the air outlet pump 10-3 to meet the needs of the growth of photosynthetic bacteria.

[0044] When the CO2 concentration in the fermentation tank is insufficient, the control module will send a signal to the CO2 regulator to increase the supply of CO2; when the CO2 concentration is too high, the control module will reduce the supply of CO2 to maintain the optimal fermentation environment.

[0045] The above-mentioned embodiments are only embodiments of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A fermentation system for efficient gas recycling, characterized in that: It includes a gas storage device, an air intake pump, an air outlet pump, an air intake solenoid valve and an air outlet solenoid valve; the air intake solenoid valve is connected to the air intake pump, and the air outlet solenoid valve is connected to the air outlet pump; the gas storage device is connected to the air intake pump and the air outlet pump through pipelines respectively; It also includes a fermentation module, which is composed of three fermentation tanks connected in series, and the fermentation tanks are respectively connected to the air inlet solenoid valve and the air outlet solenoid valve; The fermentation tank is provided with a detection device, which includes a sensor and a control module connected with the sensor.

2. A fermentation system for efficient gas recycling according to claim 1, characterized in that: The tank body of the fermentation tank is provided with a feed inlet, an inoculation port, an air inlet pipe, an air outlet pipe, a lighting device and a stirring device.

3. A fermentation system for efficient gas recycling according to claim 1 or 2, characterized in that: The control module includes a pH regulator, a CO2 concentration regulator, a temperature regulator and a light regulator.

4. A fermentation system for efficient gas recycling according to claim 3, characterized in that: The sensors include a pH sensor, a temperature sensor, a photometric sensor and a CO2 concentration sensor.

5. A fermentation system for efficient gas recycling according to claim 4, characterized in that: The sensor is provided with a CO2 electrode, a temperature and a photometric electrode. The CO2 electrode is connected to a CO2 concentration regulator, and the temperature and the photometric electrode are connected to a temperature regulator and a light regulator.

6. The fermentation system for efficient gas recycling according to claim 1, characterized in that: The control module controls the start and stop of the air inlet solenoid valve and the air outlet solenoid valve through output signals.

7. The fermentation system for efficient gas recycling according to claim 2, characterized in that: The lighting device comprises a glass tube, an LED lamp group, a sealing ring and a built-in fixing plate.

8. The fermentation system for efficient gas recycling according to claim 1, characterized in that: A condensation hood is arranged outside the fermentation tank.

9. The fermentation system for efficient gas recycling according to claim 1, characterized in that: The gas storage device is a large-capacity air bag.

10. The fermentation system for efficient gas recycling according to claim 2, characterized in that: There are 4 to 8 lighting devices distributed on the side wall of the fermentation tank.

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