Low-energy-consumption fermentation system

Abstract

The utility model relates to a low-energy-consumption fermentation system. The low-energy-consumption fermentation system structurally comprises a fermentation tank, a batching tank connected with the fermentation tank, water production equipment and a steam inlet pipe, the water production equipment comprises a quartz sand filter connected with a water source, an active carbon filter connected with the quartz sand filter, a precision filter connected with the active carbon filter and an ultrafiltration filter connected with the precision filter; and the ultrafiltration filter is connected with the fermentation tank. According to the utility model, the high-concentration culture medium is configured for actual disinfection, so that the steam consumption is effectively reduced, and the energy consumption is reduced. Meanwhile, the sterile water is used for diluting and cooling the high-concentration culture medium, so that the operation process is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a microbial fermentation system, in particular to a low-energy consumption fermentation system. Background Art

[0002] Real sterilization refers to the process of putting the prepared culture medium into a fermentation tank or other device, passing steam to heat the culture medium and the equipment to the sterilization temperature, maintaining it for a certain period of time, and then cooling it to the inoculation temperature. It is also called intermittent sterilization or batch sterilization. This process is particularly important in the microbial fermentation industry. Although there are differences due to factors such as materials, sterilization temperature, sterilization time, and heat dissipation of the fermentation tank, it is crucial to ensure the success of the fermentation process and the product.

[0003] The microbial fermentation industry is a major energy consumer, especially in the actual consumption of fermentation tanks, where the amount of steam required is staggering. The energy consumption of this process varies depending on the type of material, sterilization temperature, length of sterilization time, and heat dissipation performance of the fermentation tank. However, no matter how the specific conditions change, the two core processes of fermentation and extraction in the biomedical field have a consistent demand for steam, and their steam usage often accounts for a significant part of the total production cost, as high as 30-40%. Faced with such huge steam consumption, how to effectively reduce the steam usage in the fermentation production process is not only crucial to the economic benefits of the enterprise, but also has far-reaching practical significance for the sustainable development of the industry. Utility Model Content

[0004] The utility model aims to provide a low-energy fermentation system to solve the problems of large steam consumption and high energy consumption in the existing fermentation system during the fermentation process.

[0005] The utility model is implemented as follows: a low-energy fermentation system, the structure of which includes a fermentation tank, a batching tank connected to the fermentation tank, a water production device and a steam inlet pipe; the water production device includes a quartz sand filter connected to a water source, an activated carbon filter connected to the quartz sand filter, a precision filter connected to the activated carbon filter and an ultrafiltration filter connected to the precision filter; the ultrafiltration filter is connected to the fermentation tank.

[0006] Furthermore, a concentrated water outlet pipe and a clean water outlet pipe are provided on the ultrafiltration filter, a reagent inlet pipe is provided on the pipeline between the precision filter and the ultrafiltration filter, and a reagent outlet pipe is provided on the concentrated water outlet pipe.

[0007] Furthermore, it also includes a sterile water tank connected to the ultrafiltration filter, and the sterile water tank is connected to the fermentation tank.

[0008] Furthermore, the fermentation tank includes a skirt, a tank body arranged on the skirt, a stirring mechanism arranged in the tank body, and a temperature control unit arranged on the tank body.

[0009] Furthermore, the temperature control unit includes an inner temperature control tube arranged in the tank body and an outer temperature control tube arranged on the outer wall of the tank body.

[0010] Furthermore, a support rod is arranged on the inner wall of the tank body, and the internal temperature control tube is arranged on the support rod.

[0011] Furthermore, the stirring mechanism includes a rotating shaft passing through the top of the tank body and a plurality of stirring blades arranged on the rotating shaft.

[0012] Furthermore, a support frame is arranged on the inner bottom of the tank body, a shaft sleeve is arranged on the support frame, and the lower end of the rotating shaft is inserted into the shaft sleeve.

[0013] The utility model effectively reduces steam consumption and energy consumption by configuring a high-concentration culture medium for actual sterilization. At the same time, sterile water is used to dilute and cool the high-concentration culture medium, which simplifies the operation process and improves production efficiency. The utility model ensures the quality of sterile water through a multi-stage filtration system, provides a reliable water source for the fermentation process, avoids the culture medium in the fermentation tank from being contaminated by bacteria, and improves product quality. The setting of the control unit and stirring mechanism of the fermentation tank of the utility model realizes the precise control of the temperature and culture medium state in the fermentation tank, and improves the stability and controllability of the fermentation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural diagram of a fermentation tank.

[0016] Figure 3 yes Figure 2 Schematic diagram of the internal structure.

[0017] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure.

[0018] In the figure: 1, fermentation tank, 2, batching tank, 3, quartz sand filter, 4, activated carbon filter, 5, precision filter, 6, ultrafiltration filter, 7, sterile water tank, 8, steam inlet pipe, 9, reagent inlet pipe, 10, concentrated water outlet pipe, 11, clean water outlet pipe, 12, reagent outlet pipe, 13, backwash water tank, 14, backwash water outlet pipe, 15, flushing concentrated water outlet pipe, 101, skirt, 102, tank body, 103, internal temperature control tube, 104, external temperature control tube, 105, rotating shaft, 106, stirring blade, 107, servo motor, 108, support frame, 109, bushing, 110, support rod, 201, feed pipe, 202, water inlet pipe, 203, discharge pipe. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, the utility model includes a fermentation tank 1, a batching tank 2 connected to the fermentation tank 1, a water production device and a steam inlet pipe 8. The water production device includes a quartz sand filter 3 connected to a water source, an activated carbon filter 4 connected to the quartz sand filter 3, a precision filter 5 connected to the activated carbon filter 4, an ultrafiltration filter 6 connected to the precision filter 5, and a sterile water tank 7 connected to the ultrafiltration filter 6. The water outlet of the sterile water tank 7 is connected to the fermentation tank 1 through a pipeline. The filters and containers of the water production device are connected by pipelines.

[0020] The quartz sand filter 3 is used to remove suspended matter in the water. The precision filter 5 is used to remove micro, suspended or colloidal particles in the water that cannot be removed by the usual sand filter. The ultrafiltration filter 6 filters out harmful substances such as rust, silt, suspended matter, colloid, bacteria, macromolecular organic matter, etc. in the water. The ultrafiltration filter 6 adopts the filter membrane technology, and its filter membrane pore size is less than 0.2 microns, which can accurately intercept various impurities. The RO reverse osmosis membrane with a filtration accuracy of up to 0.0001 microns is the first choice, which can further improve the filtration effect and make the water quality reach a higher purity standard.

[0021] A medicine inlet pipe 9 is provided on the pipeline between the precision filter 5 and the ultrafiltration filter 6. The medicine inlet pipe 9 is the outlet pipe of the medicine tank. The medicine tank is omitted in the figure. Two water outlet pipes are provided on the ultrafiltration filter 6, namely, a concentrated water outlet pipe 10 and a clean water outlet pipe 11. The clean water outlet pipe 11 is responsible for conveying the clean water after ultrafiltration treatment to the sterile water tank 7 to ensure that the water quality in the water tank reaches the sterile standard; and the concentrated water outlet pipe 10 is responsible for discharging the concentrated water containing impurities and medicines generated during the filtration process. At the same time, in order to facilitate the recovery or treatment of medicines, a medicine outlet pipe 12 is provided on the concentrated water outlet pipe 10.

[0022] Two or more ultrafiltration filters 6 can be provided to improve the filtration efficiency. In the present embodiment, there are four ultrafiltration filters 6. When there are enough ultrafiltration filters 6, the sterile water tank 7 can be omitted, and the outlet pipe of the ultrafiltration filter 6 can be directly connected to the fermentation tank 1.

[0023] A backwash water tank 13 is also connected to the clean water outlet pipe 11 of the ultrafiltration filter 6. The clean water outlet pipe 11 is connected to the inlet pipe of the backwash water tank 13. The outlet pipe of the backwash water tank 13 is connected to the clean water outlet pipe 11. The backwash water tank 13 is used to backwash the ultrafiltration filter 6, and remove the impurities accumulated on the filter by the reverse flow of water or air. Of course, the ultrafiltration filter 6 can also be backwashed with water from the sterile water tank 7. The purpose of setting the backwash water tank 13 in this embodiment is to avoid possible contamination of the sterile water tank 7 during the backwashing process. A backwash water outlet pipe 14 is connected to the inlet pipe of the ultrafiltration filter 6 to smoothly discharge the water flow with impurities generated by backwashing out of the system.

[0024] The concentrated water outlet pipe 10 is also connected to a flushing concentrated water outlet pipe 15, which is used to discharge impurities generated during the flushing concentrated water outlet pipe. The clean water outlet pipe 11 of the ultrafiltration filter 6 is connected to the concentrated water outlet pipe 10 of the ultrafiltration filter 6, and is used to flush the concentrated water outlet pipe 10, the reagent outlet pipe 12 and the flushing concentrated water outlet pipe 15.

[0025] The steam inlet pipe 8 is used to deliver steam to the fermenter 1 to sterilize the culture medium in the fermenter 1. This step is crucial to ensure the smooth progress of the fermentation process and the quality and safety of the product. Through the heating and sterilization of steam, harmful microorganisms in the culture medium can be effectively killed, creating a clean and sterile environment for the subsequent fermentation process.

[0026] like Figure 2 As shown, the fermentation tank 1 includes a skirt 101 , a tank body 102 arranged on the skirt 101 , a stirring mechanism arranged in the tank body 102 , and a temperature control unit arranged on the tank body 102 .

[0027] The temperature control unit includes an inner temperature control tube 103 disposed in the tank body 102 and an outer temperature control tube 104 disposed on the outer wall of the tank body 102 .

[0028] like Figure 3 As shown, the stirring mechanism includes a rotating shaft 105 passing through the top of the tank body 102 and a plurality of stirring blades 106 arranged on the rotating shaft. A servo motor 107 is arranged at the upper end of the tank body 102. The output shaft of the servo motor 107 is connected to the rotating shaft 105. The servo motor 107 drives the rotating shaft 105 and the stirring blades 106 thereon to rotate, so as to stir the culture medium in the tank body 202. A support frame 108 is arranged at the inner bottom of the tank body 102, and a shaft sleeve 109 is arranged on the support frame. The lower end of the rotating shaft 105 is passed through the shaft sleeve. The internal temperature control tube 103 is vertically arranged in the tank body 102, and the internal temperature control tube 103 extends like a spring to increase the contact area with the culture medium in the tank body 102.

[0029] like Figure 4As shown, there are several groups of internal temperature control tubes 103 to improve the temperature control efficiency. In this embodiment, four groups of internal temperature control tubes 103 are provided, and the number of internal temperature control tubes 103 installed can be reasonably selected according to the size of the tank body 102. Support rods 110 are provided on the inner wall of the tank body 102, and the internal temperature control tubes 103 are arranged on the support rods 110. Each internal temperature control tube 103 is supported by two support rods 110. The two support rods 110 are symmetrically arranged on both sides of the internal temperature control tube 103 to ensure that the position of the internal temperature control tube in the tank body is stable and not prone to shaking or displacement. The inlet and outlet of the internal temperature control tube 103 are opened on the tank body 102, and the inlet and outlet pipes of the internal temperature control tube 103 are passed through the tank body 102.

[0030] The external temperature control tube 104 is a semicircular tube jacket arranged on the outer wall of the tank body 102. The external temperature control tube 104 is spirally wound on the outer wall of the tank body 102. The semicircular external temperature control tube 104 is not only firmly connected to the tank body 102, but also increases the contact area with the tank body 102, thereby improving the efficiency of temperature regulation.

[0031] The temperature of the culture medium in the tank 102 is adjusted by injecting cold water and hot water or steam into the inner temperature control tube 103 and the outer temperature control tube 104 so that the culture medium is at a suitable temperature for the growth of the bacteria.

[0032] The tank body 102 is also provided with auxiliary devices such as an exhaust hole, a thermometer, a pressure gauge, an observation hole, a manhole, etc. to ensure comprehensive monitoring and smooth progress of the fermentation process.

[0033] The batching tank 2 is provided with a feed pipe 201 , a water inlet pipe 202 and a discharge pipe 203 . The discharge pipe 203 is connected to the fermentation tank 1 . The batching tank 2 delivers the evenly mixed culture medium to the fermentation tank 1 through the discharge pipe 203 .

[0034] When in use, first, prepare a high-concentration culture medium 3-10 times the normal fermentation concentration in the preparation tank 2, and inject the prepared high-concentration culture medium into the fermentation tank 1 for actual digestion. Because the volume of the high-concentration culture medium is only 10%-33% of the volume of the normal fermentation culture medium, the amount of steam required for the actual digestion process is reduced by 50%-80%. This improvement not only reduces energy consumption, but also shortens the actual digestion time and improves production efficiency.

[0035] Secondly, after the actual disinfection is completed, the sterile water obtained from the water preparation equipment is injected into the fermentation tank 1, and the high-concentration culture medium after the actual disinfection is adjusted to the normal concentration required for normal fermentation. In this process, the sterile water injected in this process cools the fermentation tank 1 and the culture medium inside it, further reducing the consumption of cooling water required for cooling the culture medium.

Claims

1. A low energy consumption fermentation system, characterized in that: It includes a fermentation tank, a batching tank connected to the fermentation tank, water production equipment and a steam inlet pipe; the water production equipment includes a quartz sand filter connected to a water source, an activated carbon filter connected to the quartz sand filter, a precision filter connected to the activated carbon filter and an ultrafiltration filter connected to the precision filter; the ultrafiltration filter is connected to the fermentation tank.

2. The low energy consumption fermentation system according to claim 1, characterized in that: The ultrafiltration filter is provided with a concentrated water outlet pipe and a clean water outlet pipe, the pipeline between the precision filter and the ultrafiltration filter is provided with a reagent inlet pipe, and the concentrated water outlet pipe is provided with a reagent outlet pipe.

3. The low energy consumption fermentation system according to claim 1, characterized in that: It also includes a sterile water tank connected to the ultrafiltration filter, and the sterile water tank is connected to the fermentation tank.

4. The low energy consumption fermentation system according to claim 1, characterized in that: The fermentation tank comprises a skirt, a tank body arranged on the skirt, a stirring mechanism arranged in the tank body, and a temperature control unit arranged on the tank body.

5. The low energy consumption fermentation system according to claim 4, characterized in that: The temperature control unit includes an inner temperature control tube arranged in the tank body and an outer temperature control tube arranged on the outer wall of the tank body.

6. The low energy consumption fermentation system according to claim 5, characterized in that: A support rod is arranged on the inner wall of the tank body, and the internal temperature control tube is arranged on the support rod.

7. The low energy consumption fermentation system according to claim 4, characterized in that: The stirring mechanism comprises a rotating shaft passing through the top of the tank body and a plurality of stirring blades arranged on the rotating shaft.

8. The low energy consumption fermentation system according to claim 7, characterized in that: A support frame is arranged on the inner bottom of the tank body, a shaft sleeve is arranged on the support frame, and the lower end of the rotating shaft is inserted into the shaft sleeve.

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