A cyclone gas distributor

Abstract

The present invention discloses a cyclone gas distributor, which belongs to the technical field of fermentation engineering equipment. The cyclone gas distributor includes a cylindrical cavity, a first frustum-conical cavity and a tangential air inlet pipe. The cylindrical cavity is connected to the first frustum-conical cavity and is coaxial. The tangential air inlet pipe is connected to the side of the cylindrical cavity, and the gas enters the cylindrical cavity tangentially from the side of the cylindrical cavity through the tangential air inlet pipe; the cylindrical cavity, the first frustum-conical cavity and the tangential air inlet pipe are located in a fermentation tank container, and the first frustum-conical cavity is located below the cylindrical cavity. The present invention utilizes a large flow of gas to rotate at high speed in the cylindrical cavity to form a negative pressure state inside, thereby attracting a small flow of liquid upward, which is beneficial to the pre-dispersion of gas and liquid on the one hand, and on the other hand, it restricts the air flow channel, effectively guides the gas-liquid mixed flow to the bottom of the radial flow agitator, and promotes the gas-liquid dispersion effect of the agitator.

Description

Technical Field

[0001] The invention relates to a cyclone type gas distributor, belonging to the technical field of fermentation engineering equipment. Background Art

[0002] A gas distributor is a key component within a ventilated agitator fermenter, guiding and pre-dispersing the gas. Currently, the main types of gas distributors used in industrial-scale fermenters include single-tube, annular multi-porous tube, and Venturi jet.

[0003] A single-tube gas distributor has a single inlet pipe extending to the bottom of the fermenter, with the opening facing downward. Its advantages are simple structure and ease of cleaning; its disadvantages are poor pre-dispersion and poor airflow guidance.

[0004] The annular porous tube gas distributor is located directly below the radial flow agitator. The annular tube is evenly distributed with small holes, with the openings facing downward. Its advantages include a simple structure, good pre-dispersion, and a certain guiding function. However, its disadvantages are that the small holes are easily clogged, making it unsuitable for culture media containing solid particles and difficult to clean.

[0005] A Venturi-sparger gas distributor consists of multiple sets of Venturi-sparger tubes arranged in parallel in a ring-shaped pattern at the bottom of the fermenter, injecting compressed gas sideways and downward. Its advantages include excellent pre-dispersion, but its disadvantages include a complex structure, susceptibility to clogging, and significant fluid resistance losses.

[0006] During the aerated fermentation process, a good gas distributor must: 1. Avoid liquid accumulation, clean dead zones, and be easy to clean; 2. Direct the airflow directly below the radial flow agitator to facilitate effective gas-liquid dispersion. Therefore, whether using a single-tube, annular multi-porous tube, or Venturi jet, the air outlet faces downward. This design avoids the risk of contamination from liquid accumulation within the tube. Once gas enters the fermenter, it bubbles upward due to buoyancy. Therefore, radial flow agitators are often located above the gas distributor, which conflicts with the hygienic requirement of having downward-facing openings in the gas distributor. Consequently, in traditional gas distributors, the airflow initially sprays downward. After reflection from the tank bottom or due to buoyancy, the airflow diverges and cannot be concentrated directly below the radial flow agitator. This causes some of the airflow to escape into the non-agitated area before being dispersed by the radial flow agitator, forming large-diameter bubbles that are detrimental to efficient oxygen transfer. Summary of the Invention

[0007] To solve the above problems, the present invention provides a cyclone gas distributor, which uses a large flow of gas to rotate at high speed in a cylindrical cavity to attract a small flow of liquid upward. On the one hand, it is beneficial to the pre-dispersion of gas and liquid. On the other hand, it restricts the air flow channel and effectively guides the gas-liquid mixed flow to the bottom of the radial flow agitator, thereby promoting the gas-liquid dispersion effect of the agitator.

[0008] A cyclone-type gas distributor comprises a cylindrical cavity, a first frustum-conical cavity and a tangential air inlet pipe, wherein the cylindrical cavity is connected to the first frustum-conical cavity and is coaxial with the first frustum-conical cavity, and the tangential air inlet pipe is connected to the side of the cylindrical cavity, and gas enters the cylindrical cavity tangentially from the side of the cylindrical cavity through the tangential air inlet pipe; the cylindrical cavity, the first frustum-conical cavity and the tangential air inlet pipe are located in a fermentation tank container, and the first frustum-conical cavity is located below the cylindrical cavity.

[0009] In one embodiment of the present invention, a stirring shaft is provided in the fermentation tank container, the stirring shaft is connected to a radial flow agitator, the cyclone gas distributor is located directly below the radial flow agitator, and the stirring shaft passes through the cyclone gas distributor or is located directly above the cyclone gas distributor; the gas enters the cylindrical cavity tangentially from the side of the cylindrical cavity through the tangential air inlet pipe, the gas with a large volume flow rate rotates at a high speed in the cylindrical cavity and forms a negative pressure state at the axis center, attracting the liquid with a small volume flow rate to enter the cylindrical cavity from the bottom of the first frustum cavity, the gas-liquid two-phase fluid undergoes tangential mixing and dispersion in the cylindrical cavity, guiding the gas-liquid two-phase fluid to spray out upward and enter directly below the radial flow agitator.

[0010] In one embodiment of the present invention, the rotation direction of the gas-liquid mixed fluid in the cylindrical cavity is the same as the rotation direction of the radial flow agitator. The negative pressure state generated by the liquid during the rotation of the radial agitator further attracts the gas-liquid mixed flow in the cylindrical cavity to spray upward and pre-disperse.

[0011] In one embodiment of the present invention, a second frustum-conical cavity is further included, which is connected to the top of the cylindrical cavity and is coaxial with the cylindrical cavity. The gas-liquid two-phase fluid undergoes tangential mixing and dispersion in the cylindrical cavity, and the gas-liquid two-phase fluid is ejected upward through the second frustum-conical cavity.

[0012] In one embodiment of the present invention, one end of the tangential air inlet pipe close to the cylindrical cavity is in the shape of a circular tube or a rectangular tube, and the other end is in the shape of a circular tube and passes through the container wall of the fermentation tank container. The tangential air inlet pipe is connected to the inner bottom wall of the fermentation tank container through at least one fixed bracket.

[0013] In one embodiment of the present invention, the air inlet direction of the tangential air inlet pipe is the same as the rotation direction of the radial flow agitator, and the ratio of the cross-sectional area of ​​the air inlet to the gas-liquid mixing outlet is 0.1 to 0.9.

[0014] In one embodiment of the present invention, the cross-sectional area of ​​the liquid inlet of the lower end surface of the first truncated cone is smaller than the cross-sectional area of ​​the air inlet, and the ratio of the cross-sectional area of ​​the liquid inlet to the air inlet is 0.05-0.5.

[0015] In one embodiment of the present invention, the height-to-diameter ratio of the cylindrical cavity is 1.0 to 5.0, and the ratio of the height of the first frustum-conical cavity to the diameter of the cylindrical cavity is 0.1 to 1.0; the height of the second frustum-conical cavity is zero, or the ratio of the height of the second frustum-conical cavity to the diameter of the cylindrical cavity is 0.05 to 0.5.

[0016] In one embodiment of the present invention, the ratio of the distance between the axis of the tangential air inlet pipe close to one end of the cylindrical cavity and the lower end surface of the cylindrical cavity to the height of the cylindrical cavity is 0.1 to 0.5.

[0017] In one embodiment of the present invention, the cylindrical cavity and the first frustum of cone cavity are an integral structure, or the cylindrical cavity and the first frustum of cone cavity are connected by a connecting piece, and the connecting piece is a clamp or a union joint, or the cylindrical cavity and the first frustum of cone cavity are a split structure, one side of the split structure is a fixed structure, and the other side is a detachable structure; a maintenance device is provided on the cylindrical cavity, and the maintenance device is an openable and closable window or a push-pull window.

[0018] Beneficial effects

[0019] 1. The cyclone gas distributor of the present invention is suitable for the ventilation process in the fermentation tank. It can guide the airflow upward to the bottom of the radial flow agitator while achieving gas pre-dispersion. It has the characteristics of simple structure, stable and controllable flow state, and good pre-dispersion effect.

[0020] 2. The present invention utilizes the fluid mechanics principle of a waterspout. A large flow of gas enters the cylindrical cavity tangentially and performs high-speed rotation, forming a negative pressure state inside, thereby attracting a small flow of liquid upward. On the one hand, it is beneficial to the pre-dispersion of gas and liquid, and on the other hand, it restricts the air flow channel and effectively guides the gas-liquid mixed flow to the bottom of the radial flow agitator, thereby promoting the gas-liquid dispersion effect of the agitator.

[0021] 3. The cyclone gas distributor of the present invention is located directly below the radial flow agitator disc on the bottom layer. During the stirring process, a negative pressure state is further formed due to the centrifugal action of the radial flow agitator, which accelerates the gas-liquid mixed flow to be ejected from the gas distributor, which is more conducive to forming a velocity difference between the gas and liquid phase fluids, thereby promoting and strengthening the pre-dispersion and diversion of the gas-liquid flow.

[0022] 4. The cross-sectional area of ​​the liquid inlet at the bottom of the gas distributor of the present invention is smaller than the cross-sectional area of ​​the gas inlet at the side, and also smaller than the cross-sectional area of ​​the gas-liquid mixed flow outlet at the top, which is conducive to forming a vacuum in the cylindrical cavity and sucking in liquid when in working state; when not in working state, the liquid inlet at the bottom can also serve as a drain port, which can drain the accumulated liquid in the distributor and effectively avoid the sterilization dead zone.

[0023] 5. The connector of the present invention uses a clamp or a union to connect the cylindrical cavity and the first frustum cavity, which is convenient for quick assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the gas distributor shown in Example 1.

[0025] Figure 2 for Figure 1 AA section view in.

[0026] Figure 3 This is a schematic structural diagram of the gas distributor shown in Example 2.

[0027] Figure 4 This is a schematic structural diagram of the gas distributor shown in Example 3.

[0028] Among them: 1. stirring shaft; 2. radial flow agitator; 3. second frustum cavity; 4. cylindrical cavity; 5. connecting piece; 6. first frustum cavity; 7. tangential air inlet pipe; 8. fixing bracket; 9. fermentation tank container; 10. maintenance device. DETAILED DESCRIPTION

[0029] Specific embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present invention but are not intended to limit its scope. It should be noted that when the agitator shaft passes through the cyclonic gas distributor, the cross-sectional area of ​​the gas-liquid mixed flow outlet at the top and the cross-sectional area of ​​the liquid inlet at the bottom refer to the cross-sectional area of ​​the annular gap after deducting the cross-sectional area of ​​the agitator shaft.

[0030] The present invention utilizes the fluid dynamics principles of a waterspout and employs a funnel-shaped cyclone structure for use in a gas distributor for ventilation and fermentation. The gas distributor of the present invention is similar in appearance to a cyclone separator, but differs significantly from the latter in structural features, operating mode, and implementation effects.

[0031] The cyclone separator also adopts a funnel-shaped structure, and its function is to be applied to the gas-liquid separation or gas-solid separation process. For the convenience of explanation, the gas-liquid separation process is taken as an example here. The cyclone separator has the following characteristics: 1. The gas-liquid two-phase fluid enters the cyclone separator tangentially from the side, and its inlet cross-sectional area is larger than the liquid outlet cross-sectional area of ​​the bottom cone; 2. The top of the cyclone separator is a semi-enclosed flat cover head or an elliptical head, with a small diameter air outlet hole at the top, and the cross-sectional area of ​​the air outlet hole is much smaller than the inlet cross-sectional area of ​​the gas-liquid two-phase fluid; 3. After the gas-liquid mixed flow enters the separator tangentially from the side, due to the centrifugal force generated by the vortex, the gas is ejected upward and the liquid is ejected downward, and the inside of the separator is in a positive pressure state; 4. During operation, the air flow rotates upward in the center of the cavity, and the liquid flow rotates downward in the near-wall area of ​​the cavity, eventually leading to the separation of the gas and liquid phases.

[0032] The cyclone-type gas distributor of the present invention is completely different from the cyclone separator in terms of structural features. It utilizes the fluid mechanics principle of a waterspout. A large volume flow of single-phase gas enters the cylindrical cavity of the distributor tangentially from the side. Since the cross-sectional area of ​​the gas-liquid mixed flow outlet at the top is larger than the cross-sectional area of ​​the gas inlet, it is almost an open structure. Therefore, the gas rotates at high speed in the cavity, forming a negative pressure state inside, attracting a smaller flow of liquid from the bottom into the rotating cylindrical cavity, so that the gas-liquid mixed flow is ejected from the top. During operation, the airflow is located in the near-wall area of ​​the cavity and rotates upward, while the liquid flow is smaller and is located in the center of the cavity and rotates upward. The outlet of the gas-liquid two-phase fluid of the cyclone-type gas distributor is located directly below the radial flow agitator disk at the bottom layer. During the stirring process, the centrifugal action of the radial flow agitator further forms a negative pressure state, which accelerates the gas-liquid mixed flow to be ejected from the gas distributor, which is more conducive to forming a speed difference between the gas and liquid phases, thereby promoting the pre-dispersion and diversion of the gas-liquid flow.

[0033] Example 1

[0034] A cyclone gas distributor, such as Figure 1 and Figure 2As shown, it includes a cylindrical cavity 4, a first frustum of cones 6, a second frustum of cones 3 and a tangential air inlet pipe 7; the cylindrical cavity 4, the first frustum of cones 6 and the second frustum of cones 3 are connected from top to bottom along the same axis, and the upper end face of the first frustum of cones 6 coincides with the lower end face of the cylindrical cavity 4; the lower end face of the second frustum of cones 3 coincides with the upper end face of the cylindrical cavity 4; the cylindrical cavity 4 is connected to the tangential air inlet pipe 7, and the gas enters the cylindrical cavity 4 from the side of the cylindrical cavity 4 through the tangential air inlet pipe 7, and the rotation direction of the air flow in the cylindrical cavity 4 is the same as the rotation direction of the radial flow agitator 2. The tangential air inlet pipe 7 has a rectangular opening at one end near the cylindrical cavity 4; the other end is tubular and extends to the outside of the fermenter container 9. The high-volume gas rotates within the cylindrical cavity 4, creating a negative pressure state, which attracts the lower-volume liquid to enter from the bottom of the first conical cavity 6. The gas and liquid two-phase fluids mix and disperse tangentially, guiding the gas-liquid two-phase fluid to spray upward out of the second conical cavity 3 and enter directly below the disc plane of the radial flow agitator 2, further achieving efficient gas-liquid dispersion. During ventilation, the liquid in the fermenter container 9 enters the cylindrical cavity 4 from the bottom of the first conical cavity 6. During unloading and cleaning, the liquid in the gas distributor is discharged from the bottom of the first conical cavity 6.

[0035] like Figure 1 As shown, the cyclone gas distributor is an internal component attached to the ventilated fermenter. Installed directly below the radial flow agitator 2 at the bottom of the ventilated fermenter, it guides and pre-disperses the airflow. The main structure of the cyclone gas distributor consists of a cylindrical cavity 4, a first truncated cone cavity 6, a second truncated cone cavity 3, and a tangential air inlet pipe 7.

[0036] Furthermore, the rotation direction of the gas-liquid mixed flow in the cyclone gas distributor is the same as the rotation direction of the radial flow agitator 2. The negative pressure state generated during the rotation of the radial flow agitator 2 further attracts the gas-liquid mixed flow in the gas distributor to spray upward and pre-disperse.

[0037] Specifically, the inner diameter of the fermentation tank container 9 is 2000 mm, the diameter of the stirring shaft 1 is 90 mm, the inner diameter of the cylindrical cavity 4 of the gas distributor is 200 mm, the inner diameter of the circular pipe section of the tangential air inlet pipe 7 is 80 mm, and the opening near one end of the cylindrical cavity 4 is a rectangular cross-section (40 mm × 126 mm), which is tangentially connected to the cylindrical cavity 4.

[0038] Furthermore, the air inlet direction of the tangential air inlet pipe 7 (the tangential direction of the side of the cylindrical cavity 4) is the same as the rotation direction of the radial flow agitator 2, the cross-sectional area of ​​the air inlet is smaller than the cross-sectional area of ​​the gas-liquid mixed flow outlet, and the ratio of the cross-sectional area of ​​the air inlet to the gas-liquid mixed flow outlet is 0.284.

[0039] Furthermore, the cross-sectional area of ​​the liquid inlet of the lower end surface of the first truncated cone 6 is smaller than the cross-sectional area of ​​the air inlet, and the ratio of the cross-sectional area of ​​the liquid inlet to the air inlet is 0.25.

[0040] Furthermore, the height-to-diameter ratio of the cylindrical cavity 4 is 1.5, the ratio of the height of the first truncated cone cavity 6 to the diameter of the cylindrical cavity 4 is 0.25; and the ratio of the height of the second truncated cone 3 to the diameter of the cylindrical cavity 4 is 0.1.

[0041] Furthermore, the ratio of the distance between the axis of the tangential air inlet pipe 7 close to one end of the cylindrical cavity 4 and the lower end surface of the cylindrical cavity 4 to the height of the cylindrical cavity 4 is 0.25.

[0042] Furthermore, the cylindrical cavity 4 and the first frustum of the cone cavity 6 are an integrated structure, or the cylindrical cavity 4 and the first frustum of the cone cavity 6 are connected by a connector 5, and the connector 5 can be a sanitary clamp or a sanitary union; the cylindrical cavity 4 and the first frustum of the cone cavity 6 can also be a split structure, one side of the split structure adopts a fixed structure and the other side adopts a detachable structure to facilitate maintenance.

[0043] Furthermore, the tangential air inlet pipe 7 is connected to the bottom of the fermentation tank container 9 through at least one fixing bracket 8 .

[0044] Furthermore, the radial flow agitator 2 is an RT-6 or BT-6 agitator.

[0045] The cyclone gas distributor is applied to 20m 3 In the ventilated fermenter, the culture medium contained particulate solids such as soybean meal. After 10 batches, no blockage or liquid accumulation was observed. The distance between the gas-liquid mixed flow outlet and the bottom radial flow agitator (2) was approximately 60 mm. The gas-liquid mixed flow was concentrated and sprayed onto the center of the disc of the bottom radial flow agitator (2), providing excellent pre-dispersion and flow guidance.

[0046] Example 2

[0047] like Figure 3 As shown, this embodiment differs from Example 1 in that the agitator shaft 1 in this embodiment passes through the cyclonic gas distributor. The lower end of the agitator shaft 1 is supported by a bottom bearing at the bottom of the fermentation tank container 9. The gas distributor is installed directly below the radial flow agitator 2 to guide and pre-disperse the airflow. The main structure of the cyclonic gas distributor consists of a cylindrical cavity 4, a first frustum-conical cavity 6, and a tangential air inlet pipe 7.

[0048] Specifically, the inner diameter of the fermentation tank container 9 is 2300 mm, the diameter of the stirring shaft 1 is 90 mm, the inner diameter of the gas distributor cylindrical cavity 4 is 200 mm, and the inner diameter of the tangential air inlet pipe is 80 mm.

[0049] Furthermore, the air inlet direction of the tangential air inlet pipe 7 (the tangential direction of the side of the cylindrical cavity 4) is the same as the rotation direction of the radial flow agitator 2, the cross-sectional area of ​​the air inlet is smaller than the cross-sectional area of ​​the gas-liquid mixed flow outlet, and the ratio of the cross-sectional area of ​​the air inlet to the gas-liquid mixed flow outlet is 0.201.

[0050] Furthermore, the cross-sectional area of ​​the liquid inlet of the lower end surface of the first frustum 6 is smaller than the cross-sectional area of ​​the air inlet, and the ratio of the cross-sectional area of ​​the liquid inlet to the air inlet is 0.296.

[0051] Furthermore, the height-to-diameter ratio of the cylindrical cavity 4 is 1.5, and the ratio of the height of the first frustum-conical cavity 6 to the diameter of the cylindrical cavity 4 is 0.25.

[0052] Furthermore, the ratio of the distance between the axis of the tangential air inlet pipe 7 close to one end of the cylindrical cavity 4 and the lower end surface of the cylindrical cavity 4 to the height of the cylindrical cavity 4 is 0.25.

[0053] Furthermore, the cylindrical cavity 4 is provided with a maintenance device 10, which can be an opening and closing window or a push-pull window. Figure 3 As shown, the cover of the maintenance device 10 is fixed to the cylindrical cavity 4 by a hinge, and the other side is fixed by a buckle.

[0054] Furthermore, the cyclone gas distributor structure is connected to the bottom of the fermentation tank container 9 using at least one fixed bracket 8 .

[0055] The cyclone gas distributor is applied to 30m 3 In the ventilated fermenter, the culture medium does not contain granular solid components. The distance between the gas-liquid mixed flow outlet and the bottom radial flow agitator 2 is about 100 mm. The gas-liquid mixed flow is concentratedly sprayed to the center of the disc of the bottom radial flow agitator 2, which plays a good pre-dispersion and diversion role.

[0056] Example 3

[0057] like Figure 4 As shown, this embodiment differs from Example 1 in that it does not include an agitator shaft 1 or radial flow agitator 2. Instead, a transparent fermenter container 9 is used to observe the flow field distribution of the gas distributor. The gas distributor is mounted at the bottom of the fermenter container 9 to guide and pre-disperse the airflow. The main structure of the cyclonic gas distributor consists of a cylindrical cavity 4, a first frustum-shaped cavity 6, and a tangential inlet pipe 7.

[0058] The inner diameter of the transparent fermentation tank container 9 is 200 mm, the inner diameter of the cylindrical cavity 4 of the gas distributor is 20 mm, and the inner diameter of the tangential air inlet pipe 7 is 8 mm.

[0059] The tangential air inlet pipe 7 is constructed of a silicone hose. A circular or rectangular tube adapter is connected to one end of the gas distributor's cylindrical cavity 4. The other end of the tangential air inlet pipe 7 extends outward from the wall of the fermenter container 9. Air is directed tangentially to the side of the cylindrical cavity 4. The cross-sectional area of ​​the rectangular air inlet (4 mm x 13 mm) is smaller than that of the gas-liquid mixed flow outlet. The ratio of the cross-sectional area of ​​the air inlet to the gas-liquid mixed flow outlet is 0.160.

[0060] Furthermore, the cross-sectional area of ​​the liquid inlet of the lower end surface of the first truncated cone 6 is smaller than the cross-sectional area of ​​the air inlet, and the ratio of the cross-sectional area of ​​the liquid inlet to the air inlet is 0.25.

[0061] Furthermore, the height-to-diameter ratio of the cylindrical cavity 4 is 1.5, and the ratio of the height of the first frustum-conical cavity 6 to the diameter of the cylindrical cavity 4 is 0.25.

[0062] Furthermore, the ratio of the distance between the axis of the tangential air inlet pipe 7 close to one end of the cylindrical cavity 4 and the lower end surface of the cylindrical cavity 4 to the height of the cylindrical cavity 4 is 0.25.

[0063] Optionally, the cylindrical cavity 4 and the first frustum-conical cavity 6 are an integrated structure.

[0064] Furthermore, the cyclone gas distributor structure is connected to the bottom of the fermentation tank container 9 using at least one fixed bracket 8 .

[0065] The cyclone gas distributor was applied to a 20L transparent container, using water-air as the experimental system to observe the gas-liquid dispersion and airflow guidance effects. The air flow rate was 5 to 30L / min. During the ventilation process, no bubbles were found to escape from the bottom of the cyclone gas distributor. All gases were ejected upward from the gas-liquid mixed flow outlet at the top, showing a good gas guidance effect. It was observed that the bubble diameter was small, and the largest bubble in the area above the distributor did not exceed 5mm. The gas-liquid dispersion effect was better than that of the commonly used single-tube and annular porous tubes. After the operation, there was no liquid accumulation in the gas distributor.

[0066] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cyclone gas distributor, characterized in that: The fermentation tank comprises a cylindrical cavity, a first truncated cone cavity, and a tangential air inlet pipe. The cylindrical cavity and the first truncated cone cavity are connected and coaxial. The tangential air inlet pipe is connected to the side of the cylindrical cavity. Gas enters the cylindrical cavity tangentially from the side of the cylindrical cavity through the tangential air inlet pipe. The cylindrical cavity, the first truncated cone cavity, and the tangential air inlet pipe are located in the fermentation tank container, and the first truncated cone cavity is located below the cylindrical cavity. The fermentation tank container is provided with a stirring shaft, the stirring shaft is connected to a radial flow agitator, the cyclone gas distributor is located directly below the radial flow agitator, and the stirring shaft passes through the cyclone gas distributor or is located directly above the cyclone gas distributor; gas enters the cylindrical cavity tangentially from the side of the cylindrical cavity through a tangential air inlet pipe, and the gas with a large volume flow rate rotates at a high speed in the cylindrical cavity and forms a negative pressure state at the axis, attracting liquid with a small volume flow rate to enter the cylindrical cavity from the bottom of the first frustum cavity, and the gas-liquid two-phase fluid is tangentially mixed and dispersed in the cylindrical cavity, and the gas-liquid two-phase fluid is guided to spray out upward and enter directly below the radial flow agitator; The rotation direction of the gas-liquid mixed fluid in the cylindrical cavity is the same as the rotation direction of the radial flow agitator. The negative pressure state generated by the liquid during the rotation of the radial agitator further attracts the gas-liquid mixed flow in the cylindrical cavity to spray upward and pre-disperse; The second truncated cone cavity is connected to the upper part of the cylindrical cavity and is coaxial with the cylindrical cavity. The gas-liquid two-phase fluid is tangentially mixed and dispersed in the cylindrical cavity, and the gas-liquid two-phase fluid is ejected upward through the second truncated cone cavity. The cross-sectional area of ​​the liquid inlet of the lower end surface of the first truncated cone cavity is smaller than the cross-sectional area of ​​the air inlet, and the ratio of the cross-sectional area of ​​the liquid inlet to the air inlet is 0.05-0.

5.

2. The cyclone gas distributor according to claim 1, characterized in that One end of the tangential air inlet pipe close to the cylindrical cavity is in the shape of a circular tube or a rectangular tube, and the other end is in the shape of a circular tube and passes through the container wall of the fermentation tank container. The tangential air inlet pipe is connected to the inner bottom wall of the fermentation tank container through at least one fixed bracket.

3. The cyclone gas distributor according to claim 2, characterized in that: The air inlet direction of the tangential air inlet pipe is the same as the rotation direction of the radial flow agitator, and the ratio of the cross-sectional area of ​​the air inlet to the gas-liquid mixed flow outlet is 0.1 to 0.

9.

4. The cyclone gas distributor according to claim 3, characterized in that: The height-to-diameter ratio of the cylindrical cavity is 1.0-5.0, the ratio of the height of the first frustum-conical cavity to the diameter of the cylindrical cavity is 0.1-1.0; the height of the second frustum-conical cavity is zero, or the ratio of the height of the second frustum-conical cavity to the diameter of the cylindrical cavity is 0.05-0.

5.

5. The cyclone gas distributor according to claim 4, characterized in that: The ratio of the distance between the axis of the tangential air inlet pipe close to one end of the cylindrical cavity and the lower end surface of the cylindrical cavity to the height of the cylindrical cavity is 0.1 to 0.

5.

6. The cyclone gas distributor according to claim 5, characterized in that: The cylindrical cavity and the first frustum of cone cavity are an integral structure, or the cylindrical cavity and the first frustum of cone cavity are connected by a connecting piece, and the connecting piece is a clamp or a union, or the cylindrical cavity and the first frustum of cone cavity are a split structure, one side of the split structure is a fixed structure, and the other side is a detachable structure; a maintenance device is provided on the cylindrical cavity, and the maintenance device is an openable and closable window or a push-pull window.

Images