Fermentation tank system coupled with compressed air for energy storage
By designing a fermentation tank system coupled with compressed air energy storage, the problems of high power costs and low energy utilization efficiency caused by power outages during bio-fermentation are solved, and the stable power supply and energy utilization of fermentation production are improved economically.
Patent Information
- Application Number
- CN202421801173.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-29
AI Technical Summary
Continuous ventilation and stirring are required during the biofermentation process. Power outages will have a huge negative impact on the fermentation process, resulting in high power costs and low energy utilization efficiency.
A fermentation tank system coupled with compressed air energy storage is designed, including a fermentation module and an energy storage module. The energy storage module converts electrical energy into the potential energy of compressed air through a compressed air energy storage device and converts it back to electrical energy when needed for supplying biofermentation tanks.
Effectively respond to the adverse impact of unplanned power outages on fermentation production, reduce power costs, improve energy utilization efficiency, and simplify equipment through the shared gas storage structure and reduce investment.
Smart Images
Figure CN222907890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fermentation devices, and particularly relates to a fermentation tank system coupled with compressed air energy storage. Background Art
[0002] Biological fermentation often takes several days, especially aerobic liquid deep fermentation. During fermentation, continuous ventilation and stirring are required. If there is a power outage, it is impossible to ventilate and stir the fermentation broth, which will have a huge negative impact on the fermentation process and cause huge losses. Therefore, a fermentation system with energy storage function plays an important role for the fermentation industry to cope with unexpected power outages. In liquid fermentation, the electricity cost required for stirring, ventilation, etc. accounts for a quite large share in the total production cost of products (some can be as high as 30 - 40%). Since stirring and ventilation need to be carried out continuously during fermentation, it is not easy to avoid the high-price peak power time and make full use of the cheap valley power. Therefore, it is necessary to propose a fermentation tank system with energy storage, which is used to store cheap valley power and release electric energy during the peak power period of the power grid for fermentation production, so as to effectively reduce the power cost of fermentation and simultaneously improve the energy utilization efficiency. Content of the Utility Model
[0003] Therefore, aiming at at least one of the above problems, the utility model provides a fermentation tank system coupled with compressed air energy storage.
[0004] The utility model is realized by the following scheme:
[0005] The utility model provides a fermentation tank system coupled with compressed air energy storage, which includes a fermentation module and an energy storage module. The fermentation module includes a biological fermentation tank, and the energy storage module is a compressed air energy storage device. The energy storage module includes an electric energy storage component and a power generation component. The electric energy storage component is used to convert electric energy into the potential energy of compressed air and store it, and the power generation component is used to convert the potential energy of compressed air into electric energy, so as to provide electric energy for the biological fermentation tank.
[0006] Wherein, in one embodiment, the electric energy storage component includes a compressor, a motor and a gas storage structure; the power generation component includes an expander and a generator; the motor is used to drive the compressor to compress air and store the compressed air in the gas storage structure; when electric energy is needed, the compressed air in the gas storage structure is led out to the expander, and the expander drives the generator to generate electricity.
[0007] Among them, in one embodiment, the energy storage module further includes an intercooler, a hot tank, a cold tank, and a first pump. The outlet of the compressor is connected to the first inlet of the intercooler, and the first outlet of the intercooler is connected to the gas storage structure. The outlet of the cold tank is connected to the second inlet of the intercooler through the first pump, and the second outlet of the intercooler is connected to the hot tank.
[0008] Among them, in one embodiment, the energy storage module further includes a second pump and a reheater. The outlet of the hot tank is connected to the first inlet of the reheater through the second pump, the first outlet of the reheater is connected to the cold tank, the outlet of the gas storage structure is connected to the second inlet of the reheater, and the second outlet of the reheater is connected to the expander.
[0009] Among them, in one embodiment, the outlet of the gas storage structure is also connected to the bioreactor, and the gas storage structure can supply gas to the bioreactor.
[0010] Among them, in one embodiment, an electric energy switching module is further included, and the electric energy switching module is used to switch the electric energy input of the fermentation module, the electric energy input and output of the energy storage module.
[0011] Among them, in one embodiment, the electric energy switching module includes a first switching component for switching the electric energy input mode of the fermentation module to at least one of the electric energy input modes of grid power supply, power station power supply, and energy storage module power supply.
[0012] Among them, in one embodiment, the electric energy switching module includes a second switching component for switching the electric energy input mode of the energy storage module to at least one of the electric energy input modes of grid power supply and power station power supply.
[0013] Among them, in one embodiment, the electric energy switching module includes a second sub-switching component for making the priority of the electric energy input of grid valley electricity and / or power station power supply in the electric energy input mode of the energy storage module higher than the electric energy input of grid peak electricity.
[0014] Among them, in one embodiment, the electric energy switching module includes a third switching component for switching the electric energy output mode of the energy storage module to at least one of the electric energy output modes of output to the grid and output to the fermentation module.
[0015] Through the technical solution provided by the present utility model, the following technical effects are achieved:
[0016] 1. The utility model provides a fermentation tank system coupled with compressed air energy storage, which includes a fermentation module and an energy storage module. The fermentation module includes a biological fermentation tank, and the energy storage module is a compressed air energy storage device. The energy storage module includes an electric energy storage component and a power generation component. The electric energy storage component is used to convert electric energy into the potential energy of compressed air for storage, and the power generation component is used to convert the potential energy of compressed air into electric energy, so as to supply electric energy to the biological fermentation tank, and can effectively cope with the adverse effects of unplanned power outages on fermentation production.
[0017] 2. The energy storage module and the fermentation module share a gas storage structure. The gas storage structure can not only supply gas to the expander to drive the generator to generate electricity, but also serve as the gas source for supplying gas to the biological fermentation tank, supply gas to the biological fermentation tank, improve the energy utilization efficiency and endow the gas storage structure with multiple functions, thus streamlining the equipment and reducing the investment. Brief Description of the Drawings
[0018] Figure 1 is a schematic structural diagram of the energy storage module;
[0019] Figure 2 is a structural block diagram of the fermentation tank system coupled with compressed air energy storage. Detailed Embodiments
[0020] To further illustrate the embodiments, the utility model provides drawings. These drawings are part of the disclosure of the utility model, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0021] Now, the utility model will be further described in combination with the drawings and the detailed embodiments.
[0022] As Figure 1 and Figure 2 shown, this embodiment provides a fermentation tank system coupled with compressed air energy storage, which includes a fermentation module 100, an energy storage module 200, and an electric energy switching module 300. The energy storage module 200 includes a compressor 1, an intercooler 2, a gas storage structure 3, a hot tank 6, a cold tank 5, a first pump 4, a second pump 8, a reheater 9, an expander 10, a motor 11, and a generator 12. The fermentation module 100 includes a biological fermentation tank 7. In some embodiments, the fermentation module 100 may further include an air filter, etc., as specifically described below.
[0023] The functions of each module are described as follows:
[0024] (1) Fermentation module 100: It includes a bioreactor 7 with aeration function, through which air can be introduced to promote the growth of microorganisms therein. Some bioreactors 7 are equipped with an air filter system for filtering and sterilizing the air entering the bioreactor 7; some bioreactors 7 are also equipped with a stirring device for mixing the materials in the bioreactor 7. The fermentation module 100 sometimes also includes a steam supply system such as a boiler and an air drying system such as an air cold dryer, and its power consumption can also be supplied by the energy storage module 200 when necessary.
[0025] (2) Energy storage module 200: It is a compressed air energy storage device, including a compressor 1, an intercooler 2, a gas storage structure 3, a hot tank 6, a cold tank 5, a first pump 4, a second pump 8, a reheater 9, an expander 10, a motor 11 and a generator 12. It can utilize the electric energy from the power grid or power stations (such as photovoltaic and wind power) to drive the compressor 1 to compress air through the motor 11 and store the compressed air in the gas storage structure 3; when needed, the compressed air in the gas storage structure 3 is led to the expander 10, and the expander 10 drives the generator 12 to generate electricity. The energy storage module 200 is preferably used to store the electric energy of the valley electricity of the power grid and / or the power supply of the power station. The power stations in the power supply of the power station include but are not limited to photovoltaic power stations, wind power stations, tidal power stations, wave power stations, temperature difference power stations, concentration difference power stations, thermal power stations (including biomass power stations, waste power stations, etc.), nuclear power stations, hydropower stations and geothermal power stations, etc. The compressor 1, the motor 11 and the gas storage structure 3 form an electric energy storage component, and the electric energy storage component is used to convert electric energy into the potential energy of compressed air and store it; the expander 10 and the generator 12 form a power generation component, and the power generation component is used to convert the potential energy of compressed air into electric energy, which is used to supply electric energy to the bioreactor 7, so as to effectively cope with the adverse impact of unplanned power outages on fermentation production.
[0026] Among them, the gas storage structure 3 can be a gas storage chamber, which can be completely artificially constructed or transformed from natural caves or underground gas storage spaces such as mines; the gas storage structure 3 can also be an ordinary gas tank, such as a pressure-bearing metal tank, etc.
[0027] Among them, the intercooler 2 has corresponding first inlets and first outlets, second inlets and second outlets. The reheater 9 has corresponding first inlets and first outlets, second inlets and second outlets. Both the intercooler 2 and the reheater 9 are used for heat exchange.
[0028] The outlet of the compressor 1 is connected to the first inlet of the intercooler 2, and the first outlet of the intercooler 2 is connected to the gas storage structure 3; the outlet of the cold tank 5 is connected to the second inlet of the intercooler 2 through the first pump, and the second outlet of the intercooler 2 is connected to the hot tank 6; the outlet of the hot tank 6 is connected to the first inlet of the reheater 9 through the second pump, the first outlet of the reheater 9 is connected to the cold tank 5, the outlet of the gas storage structure 3 is connected to the second inlet of the reheater 9, and the second outlet of the reheater 9 is connected to the expander 10.
[0029] The cold tank 5 is used to store a low-temperature heat transfer medium, such as a low-temperature gas / liquid; the hot tank 6 is used to store a high-temperature heat transfer medium, such as a high-temperature gas / liquid. The first pump 4 is used to extract the low-temperature heat transfer medium in the cold tank 5, send it to the intercooler 2, and exchange heat with the high-temperature air generated by the compression of the compressor 1 in the intercooler 2, so that the compressed air is cooled, which is beneficial to the storage and transmission of the compressed air. The low-temperature heat transfer medium absorbs heat and rises to a high-temperature heat transfer medium after passing through the intercooler 2, and is transported and stored in the hot tank 6.
[0030] The second pump 8 is used to extract the high-temperature heat transfer medium in the hot tank 6, send it to the reheater 9, and exchange heat with the low-temperature gas in the gas storage structure 3 in the reheater 9, so that the low-temperature gas is heated, which is beneficial to the utilization of the compressed air. The high-temperature heat transfer medium cools down to a low-temperature heat transfer medium after passing through the heat exchange process in the reheater 9, and is transported and stored in the cold tank 5. The above two processes can be cycled and repeated, so that the energy is fully utilized in the system and the energy consumption is reduced.
[0031] The outlet of the gas storage structure 3 is also connected to the bioreactor 7. The gas storage structure 3 can be used as a gas source for supplying gas to the bioreactor 7 to supply gas to the bioreactor 7. Thus, the gas storage structure 3 can supply gas to the expander 10 to drive the generator 12 to generate electricity, and can also be used as a gas source for supplying gas to the bioreactor 7, improving the energy utilization efficiency and enabling the gas storage structure 3 to have multiple functions, and streamlining the equipment.
[0032] (3) Electric energy switching module 300: That is, a device for switching the electric energy input of the fermentation module 100, the electric energy input and output of the energy storage module 200. The electric energy switching module 300 includes a first switching component for switching the electric energy input mode of the fermentation module 100 to at least one of the electric energy input modes of grid power supply, power station power supply, and energy storage module 200 power supply. The first switching component of the electric energy switching module 300 can switch the electric energy input mode of the fermentation module 100 to at least one of grid power supply, power station power supply, and energy storage module 200 power supply.
[0033] The power switching module 300 further includes a second switching component for switching the power input mode of the energy storage module 200 to at least one of grid power supply and power station power supply. The second switching component of the power switching module 300 can switch the power input mode of the energy storage module 200 to at least one of grid power supply and power station power supply. The power switching module 300 includes a second sub-switching component for making the priority of the power input of grid valley electricity and / or power station power supply in the power input mode of the energy storage module 200 higher than that of grid peak electricity, so as to improve the economic efficiency of energy utilization.
[0034] The power switching module 300 further includes a third switching component for switching the power output mode of the energy storage module 200 to at least one of output to the grid and output to the fermentation module 100. The third switching component of the power switching module 300 can switch the power output mode of the energy storage module 200 to at least one of output to the grid and output to the fermentation module 100.
[0035] The working process of the fermentation tank system coupled with compressed air energy storage is as follows:
[0036] (1) When storing energy, electric energy is input into the energy storage module 200 by the grid (such as during valley electricity) or a power station (such as a photovoltaic power station or a wind power station) through a power switching device. The electric energy drives the motor 11 to drive the compressor 1 to compress air (multiple air compressors can be connected in series for multi-stage compression), and the compressed air is stored in the gas storage structure 3. The intercooler 2 is used to absorb the heat energy generated during the compression of the compressed air, and the heat conduction medium that can store heat after heating is stored in the hot tank 6.
[0037] (2) When releasing energy, the compressed gas in the gas storage structure 3 is heated by the reheater 9 and then enters the expander 10 (multiple expanders can be connected in series for multi-stage expansion), driving the expander 10 to drive the generator 12 to generate electric energy. The electric energy is input into the grid or supplied to the fermentation module 100 through the power switching module 300; the heat conduction medium in the hot tank 6 exchanges heat with the air through the reheater and then enters the cold tank for storage.
[0038] (3) When the fermentation module 100 needs air, it is introduced from the gas storage structure 3 into the bioreactor 7 and discharged from the air outlet of the bioreactor 7. When the air pressure in the gas storage structure 3 exceeds the air pressure required by the bioreactor 7, the pressure needs to be adjusted to an appropriate pressure for use by the bioreactor 7 through a pressure regulating valve. When the air quality (such as cleanliness) in the gas storage structure 3 cannot meet the requirements for fermentation, the air needs to be purified (such as water removal, oil removal, and sterilization) before entering the bioreactor 7. The electric energy required for the above air purification equipment can also be supplied by the energy storage module 200.
[0039] When the fermentation module 100 needs electrical energy, it can be supplied with electrical energy by the energy storage module 200 via the electrical energy switching module 300, or it can be supplied with electrical energy by the power grid (such as during off-peak electricity hours) via the electrical energy switching module 300. Generally, during off-peak electricity hours, the fermentation module 100 preferentially uses off-peak electricity for fermentation; during peak electricity hours or when the power grid cannot be used for power supply, the fermentation module 100 preferentially uses the power supply from the power station or the electrical energy released by the energy storage module 200.
[0040] The core of the above fermentation tank system coupled with compressed air energy storage lies in the fact that the energy storage module 200 and the fermentation module 100 share the gas storage structure, thereby reducing investment and enabling the bioreactor 7 to have an energy storage function, which can effectively cope with the adverse effects of unplanned power outages on fermentation production and improve the economic efficiency of energy utilization at the same time.
[0041] Although the present utility model has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model defined by the appended claims, and all of them are within the protection scope of the present utility model.
Claims
1. A fermentation tank system coupled with compressed air energy storage, characterized in that: It includes a fermentation module and an energy storage module. The fermentation module includes a biological fermentation tank. The energy storage module is a compressed air energy storage device. The energy storage module includes an electric energy storage component and a power generation component. The electric energy storage component is used to convert electric energy into potential energy of compressed air and store it. The power generation component is used to convert the potential energy of compressed air into electric energy, thereby providing electric energy to the biological fermentation tank.
2. The fermentation tank system coupled with compressed air energy storage according to claim 1, characterized in that: The electric energy storage component includes a compressor, an electric motor and an air storage structure; the power generation component includes an expander and a generator; the electric motor is used to drive the compressor to compress air, and the compressed air is stored in the air storage structure; When electric energy is needed, the compressed air in the gas storage structure is led out to the expander, and the expander drives the generator to generate electricity.
3. The fermentation tank system coupled with compressed air energy storage according to claim 2, characterized in that: The energy storage module also includes an intercooler, a hot tank, a cold tank and a first pump. The compressor outlet is connected to the first inlet of the intercooler, and the first outlet of the intercooler is connected to the gas storage structure; the outlet of the cold tank is connected to the second inlet of the intercooler through the first pump, and the second outlet of the intercooler is connected to the hot tank.
4. The fermentation tank system coupled with compressed air energy storage according to claim 3, characterized in that: The energy storage module also includes a second pump and a reheater; the outlet of the hot tank is connected to the first inlet of the reheater through the second pump, the first outlet of the reheater is connected to the cold tank, the outlet of the gas storage structure is connected to the second inlet of the reheater, and the second outlet of the reheater is connected to the expander.
5. The fermentation tank system coupled with compressed air energy storage according to claim 2, characterized in that: The outlet of the gas storage structure is also connected to the biological fermentation tank, and the gas storage structure can supply gas to the biological fermentation tank.
6. The fermentation tank system coupled with compressed air energy storage according to claim 1, characterized in that: It also includes an electric energy switching module, which is used to switch the electric energy input of the fermentation module and the electric energy input and output of the energy storage module.
7. The fermentation tank system coupled with compressed air energy storage according to claim 6, characterized in that: The power switching module includes a first switching component for switching the power input mode of the fermentation module to at least one of power grid power supply, power station power supply and energy storage module power supply.
8. The fermentation tank system coupled with compressed air energy storage according to claim 6, characterized in that: The electric energy switching module includes a second switching component for switching the electric energy input mode of the energy storage module to at least one of the electric energy input modes of power grid power supply and power station power supply.
9. The fermentation tank system coupled with compressed air energy storage according to claim 8, characterized in that: The power switching module includes a second sub-switching component for making the priority of power input from grid valley power and / or power station power supply higher than that from grid peak power in the power input mode of the energy storage module.
10. The fermentation tank system coupled with compressed air energy storage according to claim 6, characterized in that: The electric energy switching module includes a third switching component for switching the electric energy output mode of the energy storage module to at least one of outputting to a power grid and outputting to a fermentation module.