Gas-liquid mixed high-efficiency reaction kettle

Abstract

The utility model relates to a kind of gas-liquid mixed high-efficiency reaction kettle, it includes tank body, stirring mechanism and aeration mechanism, stirring mechanism includes motor, stirring shaft and stirring rod, motor is fixedly connected on head, the output end of motor is connected the stirring shaft, stirring rod is set on stirring shaft, stirring shaft and stirring rod are all set to hollow, and stirring shaft and stirring rod are communicated, gas outlet is provided on stirring rod, defoaming mechanism is provided on stirring rod, the defoaming mechanism includes bearing, connecting ring, rammer, rammer is annular array along the axis of connecting ring in the outer wall of connecting ring, at least two defoaming mechanisms are set on each stirring rod with interval, when motor drives stirring shaft to rotate, stirring rod also rotates with defoaming mechanism, when connecting ring rotates in circumference, under the action of centrifugal force, connecting ring occurs rotation, rammer on connecting ring rotates, break into several fine bubbles when gas bubble produced when gas outlet discharges gas by rammer, prevent the problem of a large number of gas bubble up.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessels, and in particular to a high-efficiency reaction vessel for gas-liquid mixing. Background Technology

[0002] In industries such as chemical, pharmaceutical, and food processing, gas-liquid reactions within reactors are very common. For example, reactions such as hydrogenation, oxidation, chlorination, and sulfonation all require sufficient contact between gas and liquid. Traditional reactors typically use stirrers to disperse gas into the liquid to improve reaction efficiency. However, this method suffers from poor gas dispersion, with bubbles easily agglomerating and rising to the surface. A large amount of gas remains above the liquid phase, resulting in low gas-liquid mass transfer efficiency and limited reaction rate. To improve reaction efficiency, it is necessary to enhance the mixing of the gas and liquid phases and increase the residence time and contact area of ​​the gas in the liquid phase. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a high-efficiency gas-liquid mixing reactor.

[0004] The present invention provides a high-efficiency gas-liquid mixing reactor using the following technical solution:

[0005] A high-efficiency gas-liquid mixing reactor includes a tank body, a stirring mechanism, and a gas-filling mechanism. The stirring mechanism includes a motor, a stirring shaft, and a stirring rod. The motor is fixed to the end cap, and the output end of the motor is connected to the stirring shaft. The stirring rod is mounted on the stirring shaft. Both the stirring shaft and the stirring rod are hollow and communicate with each other. The stirring rod has an air outlet and a defoaming mechanism. The defoaming mechanism includes a bearing, a connecting ring, and a feeding rod. The connecting ring is rotatably connected to the stirring rod via the bearing. A plurality of feeding rods are arranged in a ring along the axis of the connecting ring on the outer wall of the connecting ring. At least two defoaming mechanisms are spaced apart on each stirring rod.

[0006] Optionally, the defoaming mechanism further includes a cylindrical primary filter cover, the diameter of which is larger than the diameter of the stirring rod, and both ends of the primary filter cover are fixedly connected to the connecting rings that are spaced apart. The primary filter cover has several through holes.

[0007] Optionally, the stirring rod has at least three layers on the stirring shaft, with at least four stirring rods in each layer. Each stirring rod has two sets of air vents, and the stirring rod has three sets of defoaming mechanisms, which are located on both sides of the air vents.

[0008] Optionally, a defoaming grid plate is also provided above the stirring rod, and the defoaming grid plate has several small holes with a diameter of 2-5mm.

[0009] Optionally, the vent hole has a tapered flared structure.

[0010] Optionally, the inflation mechanism includes an external air pump, an air supply pipe, a one-way valve, and a rotary joint. One end of the air supply pipe is connected to the external air pump, and the other end of the air supply pipe is connected to the stirring shaft through the rotary joint. The one-way valve is provided on the air supply pipe.

[0011] In summary, this utility model has at least one of the following beneficial technical effects:

[0012] 1. The stirring rods are arranged in a ring along the axis of the connecting ring on the outer wall of the connecting ring. At least two defoaming mechanisms are set on each stirring rod at intervals. When the motor drives the stirring shaft to rotate, the stirring rod also rotates with the defoaming mechanism. When the connecting ring rotates circumferentially, it comes into contact with the solution in the reactor. Under the action of centrifugal force, the connecting ring rotates. The stirring rods on the connecting ring rotate, breaking the bubbles generated when the gas is discharged from the gas outlet into several fine bubbles, preventing a large number of bubbles from floating up, which would lead to low gas-liquid mass transfer efficiency and low reaction efficiency.

[0013] 2. The primary filter cover has several through holes, which can cut large bubbles into small bubbles. Combined with the secondary crushing by the feed bar, the gas-liquid contact area is further increased. The cylindrical structure guides the liquid to form a vortex, prolonging the bubble residence time and improving the mass transfer efficiency by more than 40%.

[0014] 3. A defoaming grid plate is also provided above the stirring rod. The defoaming grid plate has several small holes with a diameter of 2-5mm. The defoaming grid plate can form a moderate airflow resistance, prolong the bubble residence time to improve the breakage rate. The gap structure of the defoaming grid plate can cut the rising foam film, accelerate the bubble breakage, and the defoaming grid plate can block the vortex generated by the rotation of the stirrer from sucking up the gas, reducing the source of bubble generation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a highly efficient gas-liquid mixing reactor.

[0016] Figure 2 This is a cross-sectional view of a highly efficient gas-liquid mixing reactor.

[0017] Figure 3 This is a schematic diagram of the stirring shaft, stirring rod, and defoaming mechanism.

[0018] Figure 4 This is a partial exploded view of the stirring shaft, stirring rod, and defoaming mechanism.

[0019] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0020] Explanation of reference numerals in the attached drawings: 1. Tank body; 2. Stirring mechanism; 21. Motor; 22. Stirring shaft; 23. Stirring rod; 24. Air outlet; 3. Air filling mechanism; 31. Air supply pipe; 32. One-way valve; 33. Rotary joint; 4. Defoaming mechanism; 41. Bearing; 42. Connecting ring; 43. Feeding rod; 44. Primary filter cover; 5. Defoaming grid plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 this utility model.

[0023] Furthermore, "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] This utility model discloses a high-efficiency gas-liquid mixing reactor. (Refer to...) Figure 1-5A high-efficiency gas-liquid mixing reactor includes a tank body 1, a stirring mechanism 2, and a gas-filling mechanism 3. The stirring mechanism 2 includes a motor 21, a stirring shaft 22, and a stirring rod 23. The motor 21 is fixed to the end cap, and the output end of the motor 21 is connected to the stirring shaft 22. The stirring rod 23 is mounted on the stirring shaft 22. Both the stirring shaft 22 and the stirring rod 23 are hollow and connected. The stirring rod 23 is provided with a vent 24. The gas-filling mechanism 3 inputs high-pressure reaction gas into the hollow stirring shaft 22, which is discharged through the vent 24 on the stirring rod 23 and comes into contact with the solution in the reactor. The stirring rod 23 is provided with a defoaming mechanism 4, which includes a bearing 41 and a connecting ring 4. 2. The feeding rod 43 and the connecting ring 42 are rotatably connected to the stirring rod 23 via the bearing 41. Several feeding rods 43 are arranged in a ring along the axis of the connecting ring 42 on the outer wall of the connecting ring 42. Each stirring rod 23 is provided with at least two defoaming mechanisms 4 at intervals. When the motor 21 drives the stirring shaft 22 to rotate, the stirring rod 23 also rotates with the defoaming mechanism 4. When the connecting ring 42 rotates circumferentially, it comes into contact with the solution in the reaction vessel. Under the action of centrifugal force, the connecting ring 42 rotates. The feeding rods 43 on the connecting ring 42 rotate, breaking the bubbles generated when the gas is discharged from the gas outlet 24 into several fine bubbles, preventing a large number of bubbles from floating up, which would lead to low gas-liquid mass transfer efficiency and low reaction efficiency.

[0025] The defoaming mechanism 4 also includes a cylindrical primary filter cover 44. The diameter of the primary filter cover 44 is larger than the diameter of the stirring rod 23. Both ends of the primary filter cover 44 are fixedly connected to the connecting rings 42 that are spaced apart. The primary filter cover 44 has several through holes. The through holes of the primary filter cover 44 can cut large bubbles into small bubbles. With the help of the feeding rod 43, the bubbles are broken down in two stages, thereby further increasing the gas-liquid contact area. The cylindrical structure guides the liquid to form a vortex, prolonging the bubble residence time and improving the mass transfer efficiency by more than 40%.

[0026] The stirring rods 23 are arranged in at least three layers on the stirring shaft 22, with at least four stirring rods in each layer. Each stirring rod 23 has two sets of air outlets 24 and three sets of defoaming mechanisms 4. The three sets of defoaming mechanisms 4 are arranged on both sides of the air outlets 24 to form a three-dimensional shearing network, which expands the turbulence range of the material and improves the bubble breaking coverage. A defoaming grid plate 5 is also arranged above the stirring rods 23. The defoaming grid plate 5 has several small holes with a diameter of 2-5mm. The defoaming grid plate 5 can form a moderate airflow resistance, prolong the bubble residence time to improve the breaking rate. The gap structure of the defoaming grid plate 5 can cut the rising foam film, accelerate the bubble breaking, and the defoaming grid plate 5 blocks the vortex generated by the rotation of the stirrer from sucking up the gas, reducing the source of bubble generation.

[0027] In this invention, the gas filling mechanism 3 includes an external air pump, a gas delivery pipe 31, a one-way valve 32, and a rotary joint 33. One end of the gas delivery pipe 31 is connected to the external air pump, and the other end of the gas delivery pipe 31 is connected to the stirring shaft 22 through the rotary joint 33. The one-way valve 32 is installed on the gas delivery pipe 31. After the external air pump is started, high-pressure compressed gas is generated and output through the gas delivery pipe 31. The gas enters the rotary joint 33. This component maintains the air passage sealed when the stirring shaft 22 rotates through a mechanical seal. The rotary joint 33 dynamically introduces the gas from the static pipe into the inner cavity of the rotating stirring shaft 22, and then discharges the gas through the gas outlet 24 on the stirring rod 23, which comes into contact with the solution in the reaction vessel.

[0028] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A high-efficiency gas-liquid mixing reactor, characterized in that: The system includes a tank body (1), a stirring mechanism (2), and an air filling mechanism (3). The stirring mechanism (2) includes a motor (21), a stirring shaft (22), and a stirring rod (23). The motor (21) is fixed to the end cap, and the output end of the motor (21) is connected to the stirring shaft (22). The stirring rod (23) is mounted on the stirring shaft (22). Both the stirring shaft (22) and the stirring rod (23) are hollow, and the stirring shaft (22) and the stirring rod (23) are connected. The stirring rod (23) is provided with an air outlet (24), and the stirring rod (23) is provided with a defoaming mechanism (4). The defoaming mechanism (4) includes a bearing (41), a connecting ring (42), and a feeding rod (43). The connecting ring (42) is rotatably connected to the stirring rod (23) through the bearing (41). Several feeding rods (43) are arranged in a ring along the axis of the connecting ring (42) on the outer wall of the connecting ring (42). At least two defoaming mechanisms (4) are provided at intervals on each stirring rod (23).

2. The high-efficiency gas-liquid mixing reactor according to claim 1, characterized in that: The defoaming mechanism (4) also includes a cylindrical primary filter cover (44), the diameter of which is larger than the diameter of the stirring rod (23). The two ends of the primary filter cover (44) are respectively fixed to the connecting rings (42) arranged at intervals. The primary filter cover (44) has several through holes.

3. The high-efficiency gas-liquid mixing reactor according to claim 2, characterized in that: The stirring rod (23) is provided with at least three layers on the stirring shaft (22), and each layer of the stirring rod (23) is provided with at least four rods. Each stirring rod (23) has two sets of air outlets (24) and three sets of defoaming mechanisms (4) on the stirring rod (23). The three sets of defoaming mechanisms (4) are provided on both sides of the air outlets (24).

4. The high-efficiency gas-liquid mixing reactor according to claim 1, characterized in that: A defoaming grid plate (5) is also provided above the stirring rod (23). The defoaming grid plate (5) has several small holes with a diameter of 2-5 mm.

5. The high-efficiency gas-liquid mixing reactor according to claim 3, characterized in that: The vent (24) has a conical flared structure.

6. The high-efficiency gas-liquid mixing reactor according to claim 1, characterized in that: The inflation mechanism (3) includes an external air pump, an air supply pipe (31), a one-way valve (32), and a rotary joint (33). One end of the air supply pipe (31) is connected to the external air pump, and the other end of the air supply pipe (31) is connected to the stirring shaft (22) through the rotary joint (33). The one-way valve (32) is provided on the air supply pipe (31).

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