An overflow tank reactor

Abstract

The utility model discloses an overflow kettle type reactor, including reactor body, the inside vertical of reactor body is provided with the flow guide cylinder of two ends opening, and the flow guide cylinder divides the reactor body inside structure into the reaction zone in the flow guide cylinder and the overflow area outside the flow guide cylinder, the stirring paddle includes upper layer stirring paddle, middle layer stirring paddle and lower layer stirring paddle, and upper layer stirring paddle and middle layer stirring paddle are arranged in the inside reaction zone, and lower layer stirring paddle is arranged between the bottom of flow guide cylinder and reactor body, the utility model discloses through increasing the flow guide cylinder structure, sets up the reaction zone and overflow area, and separates the overflow port from the reaction zone, avoids the material that just joined in the kettle from directly flowing out the kettle body without being reacted fully, and moreover through setting up multilayer different function's stirring paddle, realizes the rapid mixing and conveying of material, can satisfy the solid -liquid heterogeneous phase reaction requirement of high solid content and high viscosity, significantly improves the reaction efficiency and effect, is applicable to solid -liquid heterogeneous phase continuous reaction.

Description

Technical Field

[0001] This utility model relates to the field of chemical reactor technology, and in particular to an overflow reactor suitable for solid-liquid heterogeneous reactions. Background Technology

[0002] In the field of chemical engineering, reactors are crucial equipment for chemical reactions, and their design and optimization have a vital impact on the efficiency and quality of these reactions. Overflow reactors, in particular, are widely used in chemical production due to their high production efficiency, continuous process, stability, and safety, especially suitable for homogeneous liquid-liquid and heterogeneous gas-liquid reactions. However, existing overflow reactors suffer from problems such as low material mixing efficiency and the lack of isolation between the overflow port and the reaction zone, which can lead to incomplete reaction and direct outflow of materials from the overflow port. Furthermore, overflow reactors suitable for solid-liquid heterogeneous reactions are rarely publicly reported. For example, Chinese utility model patent CN217910389U discloses "an overflow reactor," in which the added materials can react before being dispersed and mixed, and there is no isolation between the outlet and the reaction zone. This allows materials to flow directly out of the outlet without sufficient reaction, severely affecting the reaction results. For example, the "continuous batch reactor" disclosed in Chinese utility model patent CN211303013U, by extending the outlets of two sets of feed pipes to the outer edge of the stirring blade's rotation path and distributing the two sets of outlets at a certain angle along the circumferential direction of the stirring blade's rotation path, allows different materials to be dispersed before contacting and reacting, thus improving the uniformity of material mixing. However, its overflow port is directly connected to the reaction zone, which means that materials entering the reactor may flow out directly from the overflow port before fully reacting. Moreover, when applied to solid-liquid heterogeneous reactions, it is prone to clogging of the solid feed port. The "high-efficiency solid-liquid stirred overflow reactor" disclosed in Chinese invention patent CN104056585A, while applicable to solid-liquid heterogeneous reactions, suffers from the aforementioned common problems and is difficult to apply to reactions with high solid content in the system after the reaction is complete. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an overflow reactor. By improving the traditional overflow reactor's reaction body structure, a guide tube structure is added, and a reaction zone and an overflow zone are established, isolating the overflow port from the reaction zone to prevent materials added to the reactor from flowing out directly without sufficient reaction. Furthermore, by incorporating multiple layers of stirring blades with different functions, rapid mixing and conveying of materials are achieved, meeting the requirements of high solid content and high viscosity solid-liquid heterogeneous reactions, significantly improving reaction efficiency and effectiveness. This overflow reactor is suitable for continuous solid-liquid heterogeneous reactions.

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

[0005] An overflow reactor includes a reactor body 1 and a stirring mechanism;

[0006] Inside the reactor body 1, there is a vertically arranged guide tube 4 with openings at both ends. The top of the guide tube 4 is sealed to the upper part of the reactor body 1, and a gap is left between the bottom of the guide tube 4 and the bottom of the reactor body. The guide tube 4 divides the internal structure of the reactor body 1 into a reaction zone 5 inside the guide tube and an overflow zone 6 outside the guide tube 4. An overflow port 15 communicating with the overflow zone 6 is provided on the upper part of the reactor body.

[0007] The stirring mechanism includes a drive unit 7, a stirring shaft 8, and stirring blades 9. The stirring shaft 8 is connected to the drive unit 7, and the stirring blades 9 are mounted on the stirring shaft 8.

[0008] The stirring blade 9 includes an upper stirring blade 901, a middle stirring blade 902 and a lower stirring blade 903. The upper stirring blade 901 and the middle stirring blade 902 are disposed inside the reaction zone 5, and the lower stirring blade 903 is disposed between the bottom of the guide tube 4 and the reactor body 1.

[0009] Preferably, the drive unit 7 includes a motor 10 and a fixed bracket 11. The motor 10 is disposed on the top of the fixed bracket 11, and the fixed bracket 11 is disposed on the top of the reactor body 1. One end of the stirring shaft 8 is connected to the output shaft of the motor 10, and the other end extends through the top of the reactor body 1 into the interior of the reactor body 1.

[0010] Preferably, the upper stirring blade 901, the middle stirring blade 902, and the lower stirring blade 903 are one or more of turbine-type, propeller-type, and disc-type blades. More preferably, the upper stirring blade 901 is a helical propeller blade or an open-tooth disc-type blade, and the middle stirring blade 902 is a helical propeller blade. The upper stirring blade 901 and the middle stirring blade 902 have the same diameter and are smaller than the diameter of the guide tube 4, primarily responsible for the rapid dispersion and mixing of materials. The lower stirring blade 903 is a downward-pressing TTF propeller blade, and its diameter is comparable to the diameter of the guide tube 4, primarily responsible for material conveying.

[0011] Preferably, a heat exchange jacket 2 is provided on the outside of the reactor body 1, and the heat exchange jacket 2 is provided with a heat exchange medium inlet A201 and a heat exchange medium outlet A202.

[0012] Preferably, the reaction zone 5 is provided with a heat exchange coil 3. The two ends of the heat exchange coil 3 are a heat exchange medium inlet B301 and a heat exchange medium outlet B302, respectively. The heat exchange medium inlet 301 and the heat exchange medium outlet 302 respectively extend through the top wall of the reactor body 1 and out to the outside of the reactor body 1 in a sealed manner.

[0013] When it is necessary to heat or cool the material during some reaction processes, the material can be heated or cooled by introducing a heat exchange medium into the heat exchange jacket 2 and the heat exchange coil 3.

[0014] The reactor body 1 located in the reaction zone 5 is provided with a liquid feed pipe 12 and a solid feed inlet 13. The outlet of the liquid feed pipe 12 extends into the reactor body 1 and extends to the position directly above the outer edge of the upper stirring blade 901. The solid feed inlet 13 is located directly above the outer edge of the upper stirring blade 901 and is positioned opposite to the liquid feed pipe 12.

[0015] Preferably, the reactor body 1 is provided with a temperature detection port 14 at the top and a material venting port 16 at the bottom.

[0016] Compared with the prior art, the overflow reactor of this utility model has the following beneficial effects:

[0017] This invention, by incorporating a guide tube into the overflow reactor structure, divides the reactor's internal structure into a reaction zone and an overflow zone. Furthermore, it features multiple layers of stirring blades with different functions, enabling rapid mixing and conveying of materials. In practical use, this overflow reactor can quickly disperse and mix different materials entering the reactor body. After sufficient reaction in the reaction zone, the materials are conveyed to the overflow zone by the stirring blades and then flow out from the overflow port. This avoids materials entering the reactor body without complete reaction flowing directly out of the overflow port, thus improving the reaction effect. This invention has a simple structure, is easy to operate, and is suitable for solid-liquid heterogeneous reactions. It can be widely implemented in continuous solid-liquid heterogeneous reactions with high solid content and high viscosity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] In the diagram: 1. Reactor body; 2. Heat exchange jacket; 3. Heat exchange medium inlet A201; 4. Heat exchange medium outlet A202; 5. Heat exchange medium coil; 6. Heat exchange medium inlet B301; 7. Flow guide tube; 8. Reaction zone; 9. Overflow zone; 10. Drive unit; 11. Stirring shaft; 12. Stirring blades; 13. Upper stirring blades 901; 14. Middle stirring blades 902; 15. Lower stirring blades 903; 16. Motor; 17. Fixed bracket; 18. Liquid feed pipe; 19. Solid feed port; 10. Temperature detection port; 11. Overflow port; 12. Material vent port. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, the overflow reactor includes a reactor body 1, with a heat exchange jacket 2 on the outside of the reactor body 1. A heat exchange medium inlet A201 is located on one side of the bottom of the heat exchange jacket, and a heat exchange medium outlet A202 is located on the top of the heat exchange jacket 2. Inside the reactor body 1, there is a heat exchange coil 3, which includes a heat exchange medium inlet B301 and a heat exchange medium outlet B302. The heat exchange medium inlet B301 and outlet B301 of the heat exchange coil 3 are sealed through the top wall of the reactor body 1 and extend to the outside of the reactor body 1. For some reactions requiring heating or cooling of materials, heating or cooling can be achieved by introducing heat exchange medium into the heat exchange jacket 2 and the heat exchange coil 3. A guide tube 4 with openings at both ends is located close to the outside of the heat exchange coil 3. The top of the guide tube 4 is sealed to the upper part of the reactor body 1, and a gap is left between the bottom of the guide tube 4 and the bottom of the reactor body 1. The guide tube 4 divides the internal structure of the reactor body 1 into a reaction zone 5 and an overflow zone 6.

[0023] The overflow reactor also includes a stirring mechanism, which comprises a drive unit 7, a stirring shaft 8, and stirring blades 9. The drive unit 7 includes a motor 10 and a fixed support 11. The motor 10 is mounted on the top of the fixed support 11, which is mounted on the top of the reactor body 1. One end of the stirring shaft 8 is connected to the output shaft of the motor 10 in the drive unit 7, and the other end extends through the top of the reactor body 1 into the interior of the reactor body 1. The stirring blades 9 include an upper stirring blade 901, a middle stirring blade 902, and a lower stirring blade 903. The upper stirring blades 901 and 902 are installed inside the guide tube 4, where the stirring shaft is located inside the reactor body, and are mainly responsible for the rapid dispersion and mixing of materials. The lower stirring blade 903 is installed between the bottom of the guide tube 4 and the reactor body 1, where the stirring shaft is located, and is mainly responsible for the conveying of materials. The stirring blade 901 is a downward-pressing helical propulsion blade, the stirring blade 902 is a downward-pressing helical propulsion blade, and the stirring blade 903 is a downward-pressing TTF propulsion blade.

[0024] The reactor body 1 is provided with a liquid feed pipe 12 and a solid feed port 13 at the top. The outlet of the liquid feed pipe 12 extends into the reactor body and extends to the position directly above the outer edge of the upper stirring blade 901. The solid feed port 13 is located directly above the outer edge of the upper stirring blade 901 and is positioned opposite to the liquid feed pipe 13. The top of the reactor body is provided with a temperature detection port 14. The upper part of the reactor body is provided with an overflow port 15 that communicates with the overflow zone 6. The bottom of the reactor body is provided with a material vent port 16.

[0025] Example 2

[0026] The stirring blade 901 is an open-toothed disc-shaped blade, the stirring blade 902 is a downward-pressing spiral propulsion blade, and the stirring blade 903 is a downward-pressing TTF propulsion blade; the rest are the same as in Embodiment 1.

[0027] The specific workflow of this utility model is as follows:

[0028] When using the overflow reactor for a solid-liquid heterogeneous continuous reaction, the liquid material is added into the reactor body 1 through the liquid feed pipe 12, and the solid material is added into the reactor body 1 through the solid feed port 13. During this process, the motor 10 is started, and the motor 10 drives the stirring shaft 8 to rotate, thereby driving the upper stirring blade 901, the middle stirring blade 902 and the lower stirring blade 903 to rotate. The upper stirring blade 901 and the middle stirring blade 902 quickly disperse and mix the liquid material and the solid material, and the reaction takes place in the reaction zone 5. The lower stirring blade 903, through axial action, transports the reactant material from the reaction zone 5 to the overflow zone 6, and then flows out of the reactor body 1 from the overflow port 15, so as to realize the continuous reaction.

Claims

1. An overflow reactor, comprising a reactor body (1) and a stirring mechanism, characterized in that, Inside the reactor body (1), there is a vertically arranged guide tube (4) with openings at both ends. The top of the guide tube (4) is sealed to the upper part of the reactor body (1), and there is a gap between the bottom of the guide tube (4) and the bottom of the reactor body (1). The guide tube (4) divides the internal structure of the reactor body (1) into a reaction zone (5) inside the guide tube (4) and an overflow zone (6) outside the guide tube (4). An overflow port (15) communicating with the overflow zone (6) is provided on the upper part of the reactor body (1). The stirring mechanism includes a drive unit (7), a stirring shaft (8), and stirring blades (9). The stirring shaft (8) is connected to the drive unit (7), and the stirring blades (9) are mounted on the stirring shaft (8). The stirring blade (9) includes an upper stirring blade (901), a middle stirring blade (902) and a lower stirring blade (903). The upper stirring blade (901) and the middle stirring blade (902) are located inside the reaction zone (5), and the lower stirring blade (903) is located between the bottom of the guide tube (4) and the reactor body (1).

2. The overflow reactor according to claim 1, characterized in that, The upper stirring blade (901), middle stirring blade (902), and lower stirring blade (903) are one or more of turbine, propeller, and disc blades.

3. The overflow reactor according to claim 1, characterized in that, The upper stirring blade (901) is a spiral propulsion blade or an open serrated disc blade, the middle stirring blade (902) is a spiral propulsion blade, and the lower stirring blade (903) is a downward pressure TTF propulsion blade.

4. The overflow reactor according to claim 1, characterized in that, The upper stirring blade (901) and the middle stirring blade (902) have the same diameter and are smaller than the diameter of the guide tube (4), while the lower stirring blade (903) has the same diameter as the guide tube (4).

5. The overflow reactor according to claim 1, characterized in that, A heat exchange jacket (2) is provided on the outside of the reactor body (1).

6. The overflow reactor according to claim 1, characterized in that, The reaction zone (5) is equipped with heat exchange coils (3).

7. The overflow reactor according to claim 1, characterized in that, The reactor body (1) located in the reaction zone (5) is provided with a liquid feed pipe (12) and a solid feed port (13).

8. The overflow reactor according to claim 1, characterized in that, The reactor body (1) is equipped with a temperature detection port (14) at the top and a material venting port (16) at the bottom.

9. The overflow reactor according to claim 1, characterized in that, The drive unit (7) includes a motor (10) and a fixed bracket (11). The motor (10) is located on the top of the fixed bracket (11), and the fixed bracket (11) is located on the top of the reactor body (1). One end of the stirring shaft (8) is connected to the output shaft of the motor (10), and the other end extends through the top of the reactor body (1) into the interior of the reactor body (1).

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