A device for producing single-cell protein by fermentation of carbon dioxide and hydrogen.

Abstract

This invention provides an apparatus for producing single-cell protein through carbon dioxide and hydrogen fermentation. The apparatus includes: an airlift fermenter body for producing single-cell protein through carbon dioxide and hydrogen fermentation; a shaft tube rotatably mounted on the airlift fermenter body; and a defoaming plate fixedly mounted on the shaft tube, with multiple spikes at the bottom of the defoaming plate. The apparatus provided by this invention allows for the production of single-cell protein through carbon dioxide and hydrogen fermentation, and enables defoaming treatment during fermentation, increasing the air-liquid contact area and the microbial growth zone while preventing the formation of large bubbles. This ensures sufficient contact between carbon dioxide and hydrogen in the liquid, improving the single-cell protein production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of single-cell protein processing technology, and in particular to an apparatus for producing single-cell proteins by fermentation with carbon dioxide and hydrogen. Background Technology

[0002] Single-cell protein refers to the protein obtained by culturing single-celled microorganisms (such as bacteria, yeast, fungi, and algae), and it is an important source of protein.

[0003] When producing single-cell protein using carbon dioxide and hydrogen fermentation, a corresponding external circulation airlift fermenter is required. Carbon dioxide, hydrogen, and the corresponding microbial inoculum are placed into the external circulation airlift fermenter for fermentation. However, during the fermentation process, a lot of foam is generated. The accumulation of foam occupies the top space of the external circulation airlift fermenter, thereby reducing the gas-liquid contact area and the microbial growth area. At the same time, the foam layer causes bubbles to merge into large bubbles, and CO2 / H2 escapes before fully contacting the liquid, reducing the overall efficiency of single-cell protein production.

[0004] Therefore, it is necessary to provide an apparatus for producing single-cell proteins by fermentation with carbon dioxide and hydrogen to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the technical problem mentioned in the background art, where air bubbles easily accumulate and lead to poor production results when using an external circulation airlift fermenter to produce single-cell protein, this utility model provides a device for producing single-cell protein by fermentation with carbon dioxide and hydrogen.

[0006] The apparatus for producing single-cell protein by carbon dioxide and hydrogen fermentation provided by this utility model includes: an airlift fermenter body for producing single-cell protein by carbon dioxide and hydrogen fermentation; a shaft tube rotatably mounted on the airlift fermenter body; a defoaming plate fixedly mounted on the shaft tube, and the bottom of the defoaming plate is provided with multiple spikes; and a defoaming mechanism disposed between the airlift fermenter body and the defoaming plate, the defoaming mechanism being used to drive the defoaming plate to rotate and eliminate bubbles generated during the production of single-cell protein.

[0007] Preferably, the defoaming mechanism includes: a first servo motor fixedly installed on the top of the airlift fermenter body; and two bevel gears respectively fixedly sleeved on the output shaft of the first servo motor and the shaft tube, wherein the two bevel gears mesh with each other.

[0008] Preferably, a plurality of baffles are fixedly installed inside the airlift fermenter body, and the baffles are used to deflect and guide the gas entering the airlift fermenter body.

[0009] Preferably, a connecting pipe is fixedly installed on the body of the airlift fermenter, the connecting pipe and the shaft tube are rotatably connected in a sealed manner, and a rinsing pipe is fixedly installed on the defoaming plate, the rinsing pipe is connected to the shaft tube, and multiple nozzles are provided on the rinsing pipe.

[0010] Preferably, the airlift fermenter body is provided with an installation pipe, which is used to place circulating water inside the airlift fermenter body.

[0011] Preferably, a filter box is connected to the bottom of the airlift fermenter body, and a filter screen is provided in the filter box. The filter screen is used to filter the solution after the reaction of the airlift fermenter body. A cleaning mechanism is provided between the filter box and the filter screen. The cleaning mechanism is used to drive the filter screen to rotate and unload the filtered impurities.

[0012] Preferably, the cleaning mechanism includes: a mounting shaft rotatably mounted on the filter box, the mounting shaft being fixedly connected to the filter screen; and a second servo motor fixedly mounted on one side of the outer wall of the filter box, the output shaft of the second servo motor being fixedly connected to one end of the mounting shaft.

[0013] Compared with related technologies, the apparatus for producing single-cell protein by carbon dioxide and hydrogen fermentation provided by this utility model has the following beneficial effects:

[0014] This invention provides an apparatus for producing single-cell protein by fermentation with carbon dioxide and hydrogen: single-cell protein can be produced by fermentation with carbon dioxide and hydrogen, and defoaming treatment can be performed during the fermentation process to increase the air-liquid contact area and the microbial growth area, while avoiding the formation of large bubbles, so that carbon dioxide and hydrogen can fully contact the liquid and improve the production efficiency of single-cell protein. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a device for producing single-cell protein by fermentation of carbon dioxide and hydrogen provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0017] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0018] Figure 4 for Figure 2 The diagram shows an enlarged view of part B.

[0019] Reference numerals in the attached drawings: 1. Airlift fermenter body; 101. Gas distributor; 102. Circulation pipe; 103. Gas-liquid separation zone; 2. Shaft pipe; 3. Defoaming plate; 4. Spike; 5. First servo motor; 6. Bevel gear; 7. Baffle plate; 8. Connecting pipe; 9. Flushing pipe; 10. Nozzle; 11. Mounting pipe; 12. Filter box; 13. Filter screen; 14. Mounting shaft; 15. Second servo motor. Detailed Implementation

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] This invention provides an apparatus for producing single-cell protein through carbon dioxide and hydrogen fermentation, such as... Figure 1-4 As shown, the apparatus for producing single-cell protein by fermentation with carbon dioxide and hydrogen includes: an airlift fermenter body 1 for producing single-cell protein by fermentation with carbon dioxide and hydrogen; a shaft tube 2 rotatably mounted on the airlift fermenter body 1; a defoaming plate 3 fixedly mounted on the shaft tube 2, and the bottom of the defoaming plate 3 is provided with a plurality of spikes 4; and a defoaming mechanism disposed between the airlift fermenter body 1 and the defoaming plate 3, the defoaming mechanism being used to drive the defoaming plate 3 to rotate and eliminate bubbles generated during the production of single-cell protein.

[0023] In this embodiment, the external circulation airlift fermenter body 1 includes a gas distributor 101, a circulation pipe 102, and a gas-liquid separation zone 103. The circulation pipe 102 is located outside the airlift fermenter body 1. When producing single-cell protein, carbon dioxide, hydrogen, and oxygen enter through the gas distributor 101 at the bottom of the airlift fermenter body 1. The gas forms tiny bubbles that rise in the liquid, causing the surrounding liquid to flow upward (forming an upward zone). After the gas-liquid mixture reaches the top of the tank, it can be separated into gas and liquid through the gas-liquid separation zone 103. The gas is discharged, and the liquid enters the external circulation pipe 102. Since the liquid in the guide tube does not contain bubbles (higher density) while the liquid in the tank contains bubbles (lower density), a density difference is formed, which pushes the liquid downward along the guide tube (forming a downward zone). The liquid continuously circulates between the tank body (upward zone) and the external circulation pipe 102 (downward zone). This allows carbon dioxide, hydrogen, and oxygen to fully contact, mix, and ferment with the corresponding microorganisms and materials, thereby producing single-cell protein. The working principle of the airlift fermenter body 1 is existing technology and will not be elaborated here. During fermentation, the defoaming mechanism is activated, driving the defoaming plate 3 to rotate. The spikes 4 at the bottom of the defoaming plate 3 eliminate the bubbles generated during the production of single-cell protein, increasing the air-liquid contact area and the microbial growth area, while avoiding the formation of large bubbles. This ensures that carbon dioxide and hydrogen fully contact the liquid, improving the production efficiency of single-cell protein. Through the entire device, single-cell protein can be produced by fermentation using carbon dioxide and hydrogen, and defoaming treatment can be performed during fermentation to increase the air-liquid contact area and the microbial growth area, while avoiding the formation of large bubbles, ensuring that carbon dioxide and hydrogen fully contact the liquid, and improving the production efficiency of single-cell protein.

[0024] In a further preferred embodiment of the present invention, the defoaming mechanism includes: a first servo motor 5 fixedly installed on the top of the airlift fermenter body 1; and two bevel gears 6 respectively fixedly sleeved on the output shaft of the first servo motor 5 and the shaft tube 2, wherein the two bevel gears 6 mesh with each other.

[0025] In this embodiment, during fermentation, carbon dioxide, hydrogen, and corresponding bacterial strains are placed into the airlift fermenter body 1 for fermentation. The first servo motor 5 is started, and the output shaft of the first servo motor 5 rotates, driving a bevel gear 6 fixedly fitted with it to rotate. Since the two bevel gears 6 mesh with each other, they drive the shaft tube 2 fixedly fitted with another bevel gear 6 to rotate. The rotation of the shaft tube 2 drives the defoaming plate 3 fixed on it to rotate. The defoaming plate 3 uses multiple spikes 4 set at its bottom to eliminate the bubbles generated during the production of single-cell protein.

[0026] In a further preferred embodiment of the present invention, a plurality of baffles 7 are fixedly installed inside the airlift fermenter body 1, and the baffles 7 are used to deflect and guide the gas entering the airlift fermenter body 1.

[0027] In this embodiment, when the gas enters the airlift fermenter body 1, multiple baffles 7 will deflect and guide the gas, changing the gas flow path and direction, which can make the gas distribution in the tank more uniform and avoid the occurrence of local gas concentrations that are too high or too low.

[0028] In a further preferred embodiment of this utility model, a connecting pipe 8 is fixedly installed on the airlift fermenter body 1, the connecting pipe 8 and the shaft tube 2 are rotatably connected in a sealed manner, and a rinsing pipe 9 is fixedly installed on the defoaming plate 3, the rinsing pipe 9 is connected to the shaft tube 2, and a plurality of nozzles 10 are provided on the rinsing pipe 9.

[0029] In this embodiment, when it is necessary to clean the inside of the airlift fermenter body 1, cleaning fluid can be delivered into the shaft tube 2 through the connecting pipe 8. The cleaning fluid enters the flushing pipe 9 through the shaft tube 2 and is finally sprayed out from multiple nozzles 10 on the flushing pipe 9 to flush the inside of the fermenter and the defoaming plate 3. At the same time, the first servo motor 5 can be started to drive the nozzles 10 to rotate, so that the cleaning fluid can be evenly sprayed into every corner of the fermenter, thoroughly cleaning the inside of the fermenter, removing residues, keeping the inside of the fermenter clean, and creating good conditions for the next fermentation.

[0030] In a further preferred embodiment of the present invention, an installation pipe 11 is provided on the airlift fermenter body 1, and the installation pipe 11 is used to place the circulating water inside the cavity of the airlift fermenter body 1.

[0031] In this embodiment, circulating water is introduced into the placement cavity of the airlift fermenter body 1 through the installation pipe 11, which can precisely control the temperature inside the fermenter. According to the temperature requirements of microorganisms at different stages of fermentation, the temperature and flow rate of the circulating water are adjusted to keep the fermenter in a suitable temperature range, creating a stable growth environment for microorganisms, which is conducive to improving the production efficiency of single-cell protein. In addition, the airlift fermenter body 1 is equipped with a PT100 temperature sensor to monitor the internal temperature.

[0032] In a further preferred embodiment of the present invention, a filter box 12 is connected to the bottom of the airlift fermenter body 1, and a filter screen 13 is provided inside the filter box 12. The filter screen 13 is used to filter the solution after the reaction of the airlift fermenter body 1, and a cleaning mechanism is provided between the filter box 12 and the filter screen 13. The cleaning mechanism is used to drive the filter screen 13 to rotate and unload the filtered impurities.

[0033] In this embodiment, after the fermentation reaction is completed, the solution flows from the bottom of the airlift fermenter body 1 into the filter box 12. Impurities in the solution are intercepted by the filter screen 13, and the filtered solution flows out of the filter box 12 through the filter screen 13. The pre-filtration treatment facilitates the subsequent reprocessing of the solution after the reaction. When a certain amount of impurities accumulate on the filter screen 13 and affect the filtration effect, the cleaning mechanism is activated. The cleaning mechanism drives the filter screen 13 to rotate and remove the impurities intercepted on the filter screen 13, ensuring that the filter screen 13 can continue to work normally.

[0034] In a further preferred embodiment of the present invention, the cleaning mechanism includes: a mounting shaft 14 rotatably mounted on the filter box 12, the mounting shaft 14 being fixedly connected to the filter screen 13; and a second servo motor 15 fixedly mounted on one side of the outer wall of the filter box 12, the output shaft of the second servo motor 15 being fixedly connected to one end of the mounting shaft 14.

[0035] In this embodiment, when using the cleaning mechanism, the second servo motor 15 is started, and the output shaft of the second servo motor 15 rotates, which drives the mounting shaft 14 fixedly connected to it to rotate. Since the mounting shaft 14 and the filter screen 13 are fixedly connected, the filter screen 13 is driven to rotate, and the impurities intercepted on the filter screen 13 are unloaded. At the same time, when cleaning the airlift fermenter body 1, water can be used to rinse the filter screen 13 to make it clean.

[0036] In summary, compared with related technologies, this device can produce single-cell protein using carbon dioxide and hydrogen fermentation. It can also perform defoaming treatment during fermentation, increasing the air-liquid contact area and the microbial growth zone, while avoiding the formation of large bubbles. This allows carbon dioxide and hydrogen to fully contact the liquid, improving the production efficiency of single-cell protein.

[0037] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An apparatus for the production of single cell protein by fermentation of carbon dioxide and hydrogen, characterized in that, include: Airlift fermenter body used for the production of single-cell proteins by fermentation of carbon dioxide and hydrogen. Rotate the shaft tube installed on the body of the airlift fermenter; A defoaming plate is fixedly installed on the shaft tube, and the bottom of the defoaming plate is provided with multiple spikes; A defoaming mechanism is installed between the airlift fermenter body and the defoaming plate. The defoaming mechanism is used to drive the defoaming plate to rotate and eliminate bubbles generated during the production of single-cell proteins.

2. The apparatus for the production of single cell protein by carbon dioxide and hydrogen fermentation according to claim 1, wherein, The defoaming mechanism includes: A first servo motor is fixedly installed on the top of the airlift fermenter body; Two bevel gears are respectively fixedly sleeved on the output shaft of the first servo motor and the shaft tube, and the two bevel gears mesh with each other.

3. The apparatus for the production of single cell protein by carbon dioxide and hydrogen fermentation as claimed in claim 1, wherein, Multiple baffles are fixedly installed inside the airlift fermenter body, and the baffles are used to deflect and guide the gas entering the airlift fermenter body.

4. The apparatus for the production of single cell protein by carbon dioxide and hydrogen fermentation according to claim 1, wherein, A connecting pipe is fixedly installed on the body of the airlift fermenter. The connecting pipe and the shaft tube are rotatably connected in a sealed manner. A rinsing pipe is fixedly installed on the defoaming plate. The rinsing pipe is connected to the shaft tube and is equipped with multiple nozzles.

5. The apparatus for the production of single cell protein by carbon dioxide and hydrogen fermentation as claimed in claim 1, wherein, The airlift fermenter body is equipped with an installation pipe, which is used to place circulating water inside the airlift fermenter body.

6. The apparatus for the production of single cell protein by carbon dioxide and hydrogen fermentation as claimed in claim 1, wherein, A filter box is connected to the bottom of the airlift fermenter body, and a filter screen is installed inside the filter box. The filter screen is used to filter the solution after the reaction of the airlift fermenter body. A cleaning mechanism is provided between the filter box and the filter screen. The cleaning mechanism is used to drive the filter screen to rotate and unload the filtered impurities.

7. The apparatus for the production of single cell protein by carbon dioxide and hydrogen fermentation as claimed in claim 6 wherein, The cleaning mechanism includes: Rotate the mounting shaft installed on the filter box; the mounting shaft and the filter screen are fixedly connected. A second servo motor is fixedly installed on one side of the outer wall of the filter box, and the output shaft of the second servo motor is fixedly connected to one end of the mounting shaft.

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