Fermenter with air distributor

Abstract

The utility model discloses a kind of fermentation tanks with air distributor, belong to fermentation tank technical field.Its technical scheme is as follows: including jar body and controller, jar body upper end is provided with end socket, jar body bottom is provided with skirt pedestal, jar body outside is provided with outer coil pipe, inner coil pipe is provided in jar body, jar body side wall is provided with sampling port, end socket is provided with sight glass, air outlet, liquid alkali interface, sugar liquid interface and defoaming interface;Jar body inner side wall is provided with straight staircase;Jar body inside is provided with multiple groups of supporting frame and support, supporting frame and support are vertically arranged, supporting frame divides into several platforms in jar body, straight ladder is arranged through between platform, each platform is provided with inner platform guardrail, and further including air distributor being set in jar body inner bottom.The utility model sets up air distributor, greatly increase the contact area of dissolved oxygen in water body, improve dissolved oxygen and enhance bacterial activity, shorten fermentation period.

Description

Technical Field

[0001] This utility model belongs to the field of fermentation tank technology, specifically relating to a fermentation tank with an air distributor. Background Technology

[0002] Traditional vitamin C production relies on the Reichstein process, using glucose as a raw material and requiring multiple chemical reactions such as oxidation, isomerization, and hydrogenation. This method uses harmful reagents such as benzene and acetone, generating a large amount of hazardous waste. It also consumes a large amount of raw materials, involves complex steps, and has high energy consumption. To avoid these problems, bio-fermentation emerged as a method that replaces the chemical conversion process, eliminating toxic reagents and reducing raw material costs by approximately 20-30%. However, traditional fermenters use impellers to generate shear force, which can easily damage plant cells or microorganisms that require high integrity. While using agitators to increase the contact area and diffusion rate of oxygen and dissolved oxygen in the water to accelerate oxygen dissolution and transfer still results in low oxygen utilization, leading to a prolonged fermentation cycle. Uneven distribution of the reaction solution can also cause fluctuations in substrate and dissolved oxygen concentrations, affecting product formation. Utility Model Content

[0003] This invention provides a fermenter with an air distributor. The air distributor greatly increases the contact area of ​​dissolved oxygen in the water, improves dissolved oxygen, enhances bacterial activity, and shortens the fermentation cycle.

[0004] The technical solution of this utility model is as follows:

[0005] A fermenter with an air distributor includes a tank body and a controller. The tank body has a cap at the top and a skirt base at the bottom. An outer coil is installed on the outside of the tank body, and an inner coil is installed inside. Sampling ports are located on the side walls of the tank body. The cap has a sight glass, an exhaust vent, a liquid alkali inlet, a sugar solution inlet, and a defoaming inlet. A straight ladder is installed on the inner side wall of the tank body. Multiple sets of support frames and brackets are vertically arranged inside the tank body, dividing the tank body into several platforms. Straight ladders connect the platforms, and each platform has an inner platform railing. The fermenter also includes an air distributor located at the bottom of the tank body. The air distributor comprises three concentric hollow rings arranged from the inside out: an inner ring, a middle ring, and an outer ring. The inner and outer rings are connected by a connecting pipe 1 arranged along the circumference, and the inner and outer rings are connected by a connecting pipe 2 arranged along the circumference. Each ring is equipped with an air outlet. The inner, middle, and outer rings are each connected to three external air inlet pipes. Each air inlet pipe is equipped with a vent valve, which is electrically connected to the controller. The steam inlet system includes a steam inlet pipe, which is equipped with a steam filter and an air filter 1. The steam inlet pipe is also connected to a low-pressure air supply pipe and an air duct steam inlet pipe. The low-pressure air supply pipe is equipped with an air filter 2. The continuous sterilization system includes a continuous sterilization feed pipe, which is equipped with an ejector, a plate heat exchanger, a continuous sterilization pump, and a distributor. The plate heat exchanger is connected to a water inlet pipe and a water outlet pipe.

[0006] Preferably, the skirt base is also provided with reinforcing ribs.

[0007] Preferably, the diameter of the air outlet is 4-8mm.

[0008] Preferably, the first connecting pipe and the second connecting pipe are evenly staggered, and the angle between any two adjacent first connecting pipes and the center of the circle is 30°.

[0009] Preferably, an ultrasonic transducer is also installed inside the tank, and the ultrasonic transducer is electrically connected to the controller.

[0010] Preferably, a temperature sensor and a pH sensor are installed inside the tank, and both the temperature sensor and the pH sensor are electrically connected to the controller.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. The air distributor in this invention greatly increases the contact area of ​​dissolved oxygen in the water, improves dissolved oxygen, enhances bacterial activity, and shortens the fermentation cycle.

[0013] 2. The three-layer concentric ring design (inner / middle / outer ring) and the staggered 30° connecting pipe layout of this utility model air distributor make the airflow coverage more uniform, reduce dead zones, and improve dissolved oxygen efficiency.

[0014] 3. The skirt support reinforcing ribs enhance the load-bearing capacity of large tanks and reduce vibration risks; multiple sets of internal support frames and layered platforms facilitate equipment installation and maintenance, and reduce the risks of working inside the tank.

[0015] 4. The combined design of the inner and outer coils is more conducive to temperature control, and the ultrasonic transducer can suppress scale formation and maintain heat exchange efficiency for a long time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the air distributor of this utility model.

[0018] Figure 3 This is a utility model Figure 2 Enlarged view of part A in the middle.

[0019] Figure 4 This is a top view of the end cap of this utility model.

[0020] In the diagram, 1. Tank body; 2. Outer coil; 3. Straight ladder; 4. Support frame; 5. Inner coil; 6. Skirt base; 7. Air distributor; 701. Inner ring; 702. Middle ring; 703. Outer ring; 704. Connecting pipe one; 705. Connecting pipe two; 706. Air outlet; 8. Bracket; 9. Sight glass; 10. Exhaust vent; 11. Liquid alkali interface; 12. Sugar solution interface; 13. Reinforcing rib; 14. 15. Defoaming interface; 16. Inner platform railing; 17. Straight ladder; 18. Sampling port; 19. End cap; 20. Manhole; 21. Steam inlet pipe; 22. Steam filter; 23. Air filter one; 24. Low-pressure air supply pipe; 25. Air duct steam inlet pipe; 26. Continuous defoaming feed pipe; 27. Ejector; 28. Plate heat exchanger; 29. ​​Continuous defoaming pump; 30. Batching device. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model.

[0022] Example 1

[0023] like Figure 1-4As shown, this embodiment provides a fermenter with an air distributor, including a tank body 1 and a controller. The upper end of the tank body 1 is provided with a head 18, the bottom of the tank body 1 is provided with a skirt base 6 and a reinforcing rib plate 13, the outer side of the tank body 1 is provided with an outer coil 2, the inner side of the tank body 1 is provided with an inner coil 5, the side wall of the tank body 1 is provided with a sampling port 17, and the head 18 is provided with a sight glass 9, an exhaust port 10, a liquid alkali interface 11, a sugar solution interface 12 and a defoaming interface 14.

[0024] A straight ladder 3 is installed on the inner wall of the tank 1; an ultrasonic transducer is also installed inside the tank 1, and the ultrasonic transducer is electrically connected to the controller; a temperature sensor and a pH sensor are installed inside the tank 1, and both the temperature sensor and the pH sensor are electrically connected to the controller.

[0025] The tank body 1 is equipped with multiple sets of support frames 4 and brackets 8. The support frames 4 and brackets 8 are arranged vertically. The support frames 4 divide the interior of the tank body 1 into several platforms. Straight ladders 16 are installed between the platforms. Each platform is equipped with an inner platform guardrail 15.

[0026] It also includes an air distributor 7 disposed at the bottom of the tank body 1. The air distributor 7 includes three concentric rings with hollow structures arranged from the inside out. The three rings are, in order, an inner ring 701, a middle ring 702, and an outer ring 703. The inner ring 701 and the middle ring 702 are connected by a connecting pipe 704 arranged along the circumferential direction, and the middle ring 702 and the outer ring 703 are connected by a connecting pipe 705 arranged along the circumferential direction. The connecting pipes 704 and 705 are evenly staggered, and the angle between two adjacent connecting pipes 704 and 705 and the center is 30°. Each ring is provided with an air outlet 706, and the diameter of the air outlet 706 is 5mm. The inner ring 701, the middle ring 702, and the outer ring 703 are respectively connected to three external air inlet pipes. Each air inlet pipe is provided with a vent valve, and the vent valve is electrically connected to the controller.

[0027] The steam inlet system includes a steam inlet pipe 20, which is equipped with a steam filter 21 and an air filter 22. The steam inlet pipe 20 is also connected to a low-pressure air supply pipe 23 and an air supply steam pipe 25. The low-pressure air supply pipe 23 is equipped with an air filter 24.

[0028] The continuous sterilization system includes a continuous sterilization feed pipeline 26, which is equipped with an ejector 27, a plate heat exchanger 28, a continuous sterilization pump 29, and a feeder 30. The plate heat exchanger 28 is connected to an inlet water pipeline and an outlet water pipeline.

[0029] Work process:

[0030] The operator enters the tank operating platform through the top manhole 19 and the straight ladder 3. After cleaning the coils 5, supports 8, air distributors 7, etc. in the tank wall layer by layer, the tank washing water is drained, and all valves involved in the tank steam system are opened to introduce steam for cleaning. The controller initiates the cleaning program, introducing 80℃ hot water through the outer coil 2 while simultaneously circulating alkaline cleaning solution through the inner coil 5. The ultrasonic transducer emits 40kHz high-frequency vibrations to peel off the biofilm on the tank wall, and wastewater is discharged from the valve on the skirt base. The controller closes the manhole 19 sealing cover, opens the exhaust port 10, and introduces 121℃ steam through the outer coil 2, maintaining this temperature for 30 minutes (temperature sensor provides real-time feedback). Filtered steam is simultaneously introduced through the air distributor 7, and sterilization gas is ejected from the air outlet 706. After tank sterilization, sugar solution is pumped in through the sugar solution interface 12, and the culture medium is pumped into the tank through the continuous sterilization system. Once the culture medium is cooled to the required temperature through the outer and inner coils, the seed liquid is introduced into the tank through the sugar solution interface 12 for cultivation. Compressed air is evenly distributed in the fermentation broth through the air distributor 7 to increase dissolved oxygen and shorten the fermentation cycle. The temperature and pH sensors detect the temperature and pH inside the tank and feed the corresponding information back to the controller, which adjusts the temperature and pH according to the set values. During fermentation, samples are taken through the sampling port 17 to determine if the product is qualified. Once the product is qualified, it is discharged through the valve at the bottom of the skirt base 6.

[0031] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and all such modifications or substitutions should be within the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fermenter with an air distributor, characterized in that, The tank (1) includes a tank body (1) and a controller. The upper end of the tank body (1) is provided with a head (18), the bottom of the tank body (1) is provided with a skirt base (6), the outer side of the tank body (1) is provided with an outer coil (2), the inner side of the tank body (1) is provided with an inner coil (5), the side wall of the tank body (1) is provided with a sampling port (17), and the head (18) is provided with a sight glass (9), an exhaust port (10), a liquid alkali interface (11), a sugar solution interface (12), a defoaming interface (14), and a manhole (19). A straight ladder (3) is provided on the inner wall of the tank (1); The tank (1) is equipped with multiple sets of support frames (4) and brackets (8). The support frames (4) and brackets (8) are vertically arranged. The support frames (4) divide the interior of the tank (1) into several platforms. Straight ladders (16) are installed between the platforms. Each platform is equipped with an inner platform railing (15). It also includes an air distributor (7), a steam inlet system and a continuous disinfection system installed at the bottom of the tank (1). The air distributor (7) includes three concentric rings with hollow structures arranged from the inside to the outside. The three rings are, in order, an inner ring (701), a middle ring (702) and an outer ring (703). The inner ring (701) and the middle ring (702) are connected by a connecting pipe (704) arranged along the circumference. The middle ring (702) and the outer ring (703) are connected by a connecting pipe (705) arranged along the circumference. Each ring is provided with an air outlet (706). The inner ring (701), the middle ring (702) and the outer ring (703) are respectively connected to three external air inlet pipes. Each air inlet pipe is provided with a vent valve. The vent valve is electrically connected to the controller. The steam inlet system includes a steam inlet pipe (20), which is equipped with a steam filter (21) and an air filter (22). The steam inlet pipe (20) is also connected to a low-pressure air supply pipe (23) and an air supply steam pipe (25). The low-pressure air supply pipe (23) is equipped with an air filter (24). The continuous sterilization system includes a continuous sterilization feed pipeline (26), which is equipped with an ejector (27), a plate heat exchanger (28), a continuous sterilization pump (29), and a feeder (30). The plate heat exchanger (28) is connected to an inlet water pipeline and an outlet water pipeline.

2. The fermenter with an air distributor as described in claim 1, characterized in that, The skirt base (6) is also provided with reinforcing ribs (13).

3. The fermenter with an air distributor as described in claim 1, characterized in that, The diameter of the air outlet (706) is 4-8mm.

4. The fermenter with an air distributor as described in claim 1, characterized in that, Connecting pipe one (704) and connecting pipe two (705) are evenly staggered, and the angle between two adjacent connecting pipes one (704) and connecting pipe two (705) and the center of the circle is 30°.

5. The fermenter with an air distributor as described in claim 1, characterized in that, An ultrasonic transducer is also installed inside the tank (1), and the ultrasonic transducer is electrically connected to the controller.

6. The fermenter with an air distributor as described in claim 1, characterized in that, A temperature sensor and a pH sensor are installed inside the tank (1), and both the temperature sensor and the pH sensor are electrically connected to the controller.

Images