Gas-liquid reaction device

Abstract

The utility model provides a gas-liquid reaction device, which belongs to the technical field of gas-liquid reaction kettles and comprises a reaction kettle body, a gas phase pipe group and a stirring component, a reaction cavity is formed in the reaction kettle body; the top of the reaction kettle body is provided with a liquid phase pipe group which extends downwards into the reaction cavity; the gas-phase pipe group penetrates into the reaction cavity and extends to the bottom of the reaction cavity, and a spray gun which sprays upwards is arranged on the extension part of the gas-phase pipe group; the stirring assembly is arranged in the reaction cavity in a penetrating mode in the vertical direction and comprises a stirring shaft, and one end of the stirring shaft extends downwards to be close to the bottom of the reaction cavity; an axial flow stirring disc and a radial flow stirring disc which are vertically arranged at an interval are arranged on the stirring shaft; wherein the radial flow stirring disc is downwards close to the spraying end of the spraying gun, and the axial flow stirring disc is arranged above the outflow end of the liquid phase pipe set and is close to the outflow end of the liquid phase pipe set. The gas-liquid reaction device provided by the utility model can promote full mixing of gas-phase components and liquid-phase components, improve the production efficiency and improve the safety and the stability of the reaction kettle body.

Description

Technical Field

[0001] This utility model belongs to the field of gas-liquid reaction vessel technology, and more specifically, relates to a gas-liquid reaction device. Background Technology

[0002] In chemical reactions, liquid-liquid reaction and gas-liquid reaction devices are widely used in chemical synthesis and pharmaceutical preparation. To ensure sufficient contact between gaseous and liquid components, a stirring mechanism needs to be installed in the reaction device to increase the contact area between the gaseous and liquid components and ensure that the gaseous and liquid components react fully.

[0003] In the existing technology, although reaction vessels with various stirring devices are provided, there are still technical problems in the synthesis reaction of gas-liquid materials, such as low production efficiency, poor safety and stability due to untimely and incomplete reaction of gas phase components and liquid phase components. Therefore, how to ensure the high efficiency and safety of production equipment is an important long-term problem in the field of gas-liquid reaction. Utility Model Content

[0004] The purpose of this invention is to provide a gas-liquid reaction device, which aims to solve the technical problems of untimely and incomplete reaction of gas and liquid components, low production efficiency, and poor safety and stability in existing reaction devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a gas-liquid reaction device, comprising:

[0006] The reactor body has a reaction chamber inside; the top of the reactor body is provided with a liquid phase tube assembly extending downward into the reaction chamber;

[0007] A gas phase tube assembly extends from the side of the reactor body into the reaction chamber and to the bottom of the reaction chamber; the extension of the gas phase tube assembly is equipped with an upward-spraying nozzle; and

[0008] A stirring assembly is vertically installed inside the reaction chamber. The stirring assembly includes a stirring shaft with one end extending downward to near the bottom of the reaction chamber. An axial flow stirring plate and a radial flow stirring plate are provided on the stirring shaft at intervals.

[0009] The radial flow stirring plate is positioned downwards and close to the spraying end of the spray gun, while the axial flow stirring plate is positioned above and close to the outlet end of the liquid phase tube assembly.

[0010] In one possible implementation, the axial flow mixing disk includes multiple sets of first blades spaced apart around the mixing shaft; in the axial direction of the mixing shaft, the first blades have a curved surface structure that bends outward from the mixing shaft.

[0011] In some embodiments, the axial flow mixing disk further includes:

[0012] The mounting ring is fitted and fixed outside the stirring shaft and positioned above the outlet end of the liquid phase tube assembly;

[0013] Multiple connecting posts correspond one-to-one with multiple sets of the first blades; one end of each connecting post is fixed to the mounting ring, and the other end is fixedly connected to the corresponding first blade.

[0014] In one possible implementation, the runoff mixing disc includes:

[0015] An air baffle plate is connected to the bottom of the stirring shaft and covers the spraying end of the spray gun.

[0016] Multiple sets of second blades are arranged at intervals around the stirring shaft. One end of each second blade is fixed to the baffle plate, and the other end extends radially along the stirring shaft.

[0017] For example, the second blade includes:

[0018] The mounting part is fixed on the air baffle and extends radially along the air baffle.

[0019] Upper wing portion, connected to the upper end of the mounting portion; and

[0020] The lower wing is connected to the lower end of the mounting portion;

[0021] In the direction of rotation of the air baffle, both the upper wing and the lower wing extend obliquely backward, and a flow channel is formed between the lower wing, the mounting part, and the upper wing.

[0022] In some embodiments, the longitudinal section of the upper wing, the longitudinal section of the mounting portion, and the longitudinal section of the lower wing are connected sequentially to form a parabolic arc structure.

[0023] For example, in the rotation direction of the air baffle, the extension length of the upper wing is greater than the extension length of the lower wing.

[0024] In one possible implementation, the gas phase tube assembly includes:

[0025] A gas phase pipe enters from the side of the reactor body and extends downward to the bottom of the reaction chamber; a plurality of spray guns are spaced apart on the gas phase pipe;

[0026] The mounting tube is fixed at one end to the inner wall of the reaction chamber and at the other end to the insertion end of the gas phase tube.

[0027] In some embodiments, the gas phase pipe and the mounting pipe are connected in a U-shaped structure with the opening facing upwards.

[0028] In one possible implementation, the stirring assembly further includes:

[0029] The mounting bracket is located on the top of the reactor body;

[0030] A driving component is fixed on the mounting bracket, and the power output end of the driving component extends into the mounting bracket;

[0031] The upper end of the stirring shaft extends into the mounting bracket and is connected to the power output end of the drive component, and a mechanical seal cooling unit is provided at the connection between the stirring shaft and the drive component.

[0032] The solution shown in this application embodiment, compared with the prior art, allows the gas phase component to be sprayed onto the radial mixing plate via a spray gun structure by setting up a gas phase pipe assembly. The radial mixing plate then evenly distributes the gas phase component to the bottom of the reaction chamber. The liquid phase pipe assembly transports the liquid phase component into the reaction chamber and mixes it with the evenly distributed gas phase component. The mixture is then stirred by an axial mixing plate to ensure uniform mixing of the gas and liquid phase components. The axial mixing plate promotes the turbulent diffusion of the liquid phase component, while the radial mixing plate enhances the radial dispersion of the liquid phase component. The combined effect of these two mechanisms effectively promotes thorough mixing of the gas and liquid phase components, improves production efficiency, and enhances the safety and stability of the reactor. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A cross-sectional structural schematic diagram of the gas-liquid reaction device provided in an embodiment of this utility model;

[0035] Figure 2 This is a schematic diagram of the main structure of the axial flow mixing disc provided in an embodiment of the present utility model;

[0036] Figure 3 A top view of the axial flow mixing disc provided in an embodiment of this utility model;

[0037] Figure 4 This is a schematic diagram of the main structure of the runoff mixing disc provided in an embodiment of the present utility model;

[0038] Figure 5This is a top view of the radial flow mixing disc provided in an embodiment of the present invention.

[0039] In the diagram: 1. Reactor body; 11. Reaction chamber; 2. Liquid phase pipe assembly; 3. Gas phase pipe assembly; 31. Gas phase pipe; 32. Mounting pipe; 33. Spray gun; 4. Stirring assembly; 41. Stirring shaft; 42. Axial flow stirring plate; 421. First blade; 422. Mounting ring; 423. Connecting column; 43. Radial flow stirring plate; 431. Second blade; 4311. Mounting part; 4312. Upper fin; 4313. Lower fin; 432. Baffle plate; 44. Mounting bracket; 45. Drive component; 46. Mechanical seal cooling unit. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0043] Please refer to the following: Figures 1 to 5The gas-liquid reaction apparatus provided by this utility model will now be described. The gas-liquid reaction apparatus includes a reaction vessel body 1, a gas phase tube assembly 3, and a stirring assembly 4; the reaction vessel body 1 has a reaction chamber 11 inside; the top of the reaction vessel body 1 has a liquid phase tube assembly 2 extending downward into the reaction chamber 11; the gas phase tube assembly 3 enters the reaction chamber 11 from the side of the reaction vessel body 1 and extends to the bottom of the reaction chamber 11, and the extension of the gas phase tube assembly 3 is provided with an upward spray gun 33; the stirring assembly 4 is vertically inserted into the reaction chamber 11, and the stirring assembly 4 includes a stirring shaft 41 extending downward to near the bottom of the reaction chamber 11; the stirring shaft 41 is provided with an axial flow stirring plate 42 and a radial flow stirring plate 43 arranged at intervals; wherein, the radial flow stirring plate 43 is downward close to the spray end of the spray gun 33, and the axial flow stirring plate 42 is positioned above and close to the outlet end of the liquid phase tube assembly 2.

[0044] It should be understood that the radial flow stirring plate 43 in this application is mainly used to achieve radial shear dispersion of the gas phase components, so that the gas phase components are evenly distributed at the bottom of the reaction chamber 11, thereby promoting sufficient contact and reaction between the gas phase components and the liquid phase components. Therefore, the radial flow stirring plate 43 is positioned downwards close to the spray end of the spray gun 33. The axial flow stirring plate 42 provided in this application is positioned close to the outlet end of the liquid phase tube group 2, mainly used to improve the axial diffusion capability of the liquid phase components. The axial flow stirring plate 42 and the radial flow stirring plate 43 are positioned vertically opposite each other and cooperate with each other, which can significantly improve the sufficient contact and reaction between the gas phase components and the liquid phase components.

[0045] In addition, the gas phase tube assembly 3 provided in this application is provided with a spray gun 33, which is used to realize the upward spraying of gas phase components; optionally, the spray gun 33 has a high-pressure fan-shaped nozzle to improve the radial diffusion range of gas phase components.

[0046] Optionally, depending on the size of the reactor body 1, the number of axial flow stirring plates 42 and radial flow stirring plates 43 can be adjusted accordingly. For example, multiple axial flow stirring plates 42 and multiple radial flow stirring plates 43 can be arranged vertically at intervals. Optionally, the axial flow stirring plate 42 can be placed completely above the radial flow stirring plate 43, or the axial flow stirring plate 42 and the radial flow stirring plate 43 can be arranged interspersed with each other. Preferably, a radial flow stirring plate 43 is always provided at the bottom of the stirring shaft 41.

[0047] Compared with the prior art, the gas-liquid reaction device provided by this utility model can spray gas phase components through the spray gun 33 structure to the radial stirring plate 43 by setting the gas phase pipe group 3. The radial stirring plate 43 evenly distributes the gas phase components to the bottom of the reaction chamber 11. The liquid phase pipe group 2 transports the liquid phase components into the reaction chamber 11 and mixes them with the evenly distributed gas phase components. The mixture is stirred by the axial stirring plate 42 so that the gas phase components and liquid phase components are evenly mixed. The axial stirring plate 42 can promote the turbulent diffusion ability of the liquid phase components, and the radial stirring plate 43 can improve the radial dispersion ability of the liquid phase components. The combined effect of the two can effectively promote the full mixing of gas phase components and liquid phase components, improve production efficiency, and improve the safety and stability of the reaction vessel 1.

[0048] Please see Figure 3 In some possible embodiments, the axial flow mixing disk 42 includes multiple sets of first blades 421 spaced apart around the mixing shaft 41; in the axial direction of the mixing shaft 41, the first blades 421 have a curved surface structure that bends outward from the mixing shaft 41.

[0049] In this application, by setting a first blade 421 and giving the first blade 421 the aforementioned curved surface structure, it is possible to ensure that the axial flow stirring disk 42 has a large turbulent diffusion capacity and a low shear force, so that the first blade 421 can be used in conjunction with the radial flow stirring disk 43 to improve the axial diffusion capacity of the liquid phase components.

[0050] Please see Figure 2 In some embodiments, the axial flow stirring plate 42 further includes a mounting ring 422 and a plurality of connecting posts 423; the mounting ring 422 is sleeved and fixed outside the stirring shaft 41 and is positioned above the outlet end of the liquid phase tube group 2; the plurality of connecting posts 423 correspond one-to-one with a plurality of first blades 421; one end of the connecting post 423 is fixed to the mounting ring 422 and the other end is fixedly connected to the corresponding first blade 421.

[0051] By setting the mounting ring 422 and the connecting post 423, the stability of the fixation and connection of the first blade 421 can be effectively guaranteed. The mounting ring 422 is used to facilitate the connection between multiple sets of connecting posts 423 and the stirring shaft 41, and the connecting post 423 is used to fix the corresponding first blade 421 on the corresponding mounting ring 422.

[0052] Please see Figure 3 In some possible embodiments, the runoff mixing disc 43 includes an air baffle 432 and multiple sets of second blades 431; the air baffle 432 is connected to the bottom of the mixing shaft 41 and covers the spray end of the spray gun 33; multiple sets of second blades 431 are arranged at intervals around the mixing shaft 41, one end of each second blade 431 is fixed to the air baffle 432, and the other end extends radially along the mixing shaft 41.

[0053] The baffle plate 432 is used to initially intercept the gas phase components injected from the bottom so that they can be discharged radially along the baffle plate 432 via the second blade 431, thereby realizing the radial guiding effect of the radial flow mixing plate 43; the baffle plate 432 and the second blade 431 work together to further improve the radial dispersion ability of the gas phase components.

[0054] Please see Figure 4 and Figure 5 For example, the second blade 431 includes a mounting portion 4311, an upper wing portion 4312, and a lower wing portion 4313; the mounting portion 4311 is fixed to the air baffle plate 432 and extends radially along the air baffle plate 432; the upper wing portion 4312 is connected to the upper end of the mounting portion 4311; the lower wing portion 4313 is connected to the lower end of the mounting portion 4311; wherein, in the rotation direction of the air baffle plate 432, both the upper wing portion 4312 and the lower wing portion 4313 extend obliquely backward, and a runoff channel is formed between the lower wing portion 4313, the mounting portion 4311, and the upper wing portion 4312.

[0055] By setting up a flow channel so that the gas phase components and liquid phase components are mixed and then uniformly dispersed horizontally through the flow channel, the radial discharge and dispersion performance of the gas phase components is improved.

[0056] It should be understood that, inside the reactor, after the liquid phase component is introduced, the liquid phase component gathers in the reaction chamber 11. When the gas phase component is introduced, the gas phase component is sprayed out through the spray gun 33 and forms multiple unevenly distributed dispersion zones in the liquid phase component. Each dispersion zone is filled with liquid phase component, and each dispersion zone contains a mixture of a large amount of gas phase component. Through the setting of the flow channel, the mixture can be discharged radially at the flow channel, which promotes the mixing of gas phase component with the remaining liquid phase component in the dispersion zone. The second blade 431 realizes the radial discharge function of gas phase component by means of the flow channel, thereby improving the shear dispersion ability of gas phase component.

[0057] Please see Figure 5 In some embodiments, the longitudinal section of the upper wing 4312, the longitudinal section of the mounting portion 4311, and the longitudinal section of the lower wing 4313 are connected sequentially to form a parabolic arc structure.

[0058] By setting the second blade 431 as a parabolic arc structure, the diameter of the flow channel can be expanded, effectively improving the radial dispersion ability of the gas phase components, thereby improving the full mixing of the gas phase components and the liquid phase components.

[0059] Please see Figure 5 For example, in the rotation direction of the air deflector 432, the extension length of the upper wing 4312 is greater than the extension length of the lower wing 4313.

[0060] By making the extension length of the upper wing 4312 greater than that of the lower wing 4313, the gas phase components can be introduced into the runoff channel by means of the lower wing 4313 and intercepted by the upper wing 4312, thereby improving the radial dispersion capability of the second blade 431.

[0061] Specifically, the air baffle 432 and the second blade 431 with an asymmetric parabolic structure can effectively enhance the air holding capacity of the second blade 431, thereby causing the bubbles to gather under the second blade 431, rotate with the second blade 431, and be thrown out under the action of centrifugal force, evenly dispersed to various areas, effectively increasing the effective contact of the bubble medium and improving production efficiency.

[0062] Please see Figure 1 In some possible embodiments, the gas phase tube assembly 3 includes a gas phase tube 31 and an installation tube 32; the gas phase tube 31 enters from the side of the reactor body 1 and extends downward to the bottom of the reaction chamber 11; a plurality of spray guns 33 are spaced apart on the gas phase tube 31; one end of the installation tube 32 is fixed to the inner wall of the reaction chamber 11, and the other end is fixed to the end of the gas phase tube 31.

[0063] By setting the installation pipe 32, it is convenient to install and fix the gas phase pipe 31 on the inner wall of the reaction chamber 11. By setting multiple spray guns 33, the spraying efficiency of the gas phase components can be effectively improved, and the dispersion ability of the gas phase components can be improved.

[0064] Please see Figure 1 In some embodiments, the gas phase pipe 31 and the mounting pipe 32 are connected in a U-shaped structure with the opening facing upwards.

[0065] It should be understood that the reaction chamber 11 is mostly designed as an arc-shaped structure with the bottom bulging downwards. By forming a U-shaped structure with the gas phase pipe 31 and the mounting pipe 32, the gas phase pipe assembly 3 can be adapted to the structure of the reaction vessel body 1 so that the gas phase pipe 31 and the mounting pipe 32 can be fixed to the side wall of the reaction chamber 11 and the spraying part of the gas phase pipe 31 can extend to the bottom of the reaction chamber 11.

[0066] Please see Figure 1 In one possible implementation, the stirring assembly 4 further includes a mounting bracket 44 and a drive component 45; the mounting bracket 44 is located on the top of the reactor body 1; the drive component 45 is fixed on the mounting bracket 44, and the power output end of the drive component 45 extends into the mounting bracket 44; wherein, the upper end of the stirring shaft 41 extends into the mounting bracket 44 and is connected to the power output end of the drive component 45, and a mechanical seal cooling unit 46 is provided at the connection between the stirring shaft 41 and the drive component 45.

[0067] Specifically, the drive component 45 can be a drive motor, which is poweredly connected to the upper end of the stirring shaft 41 to drive the stirring shaft 41 to rotate. The mechanical seal cooling unit 46 is used to seal and cool the connection between the drive motor and the stirring shaft 41. Specifically, the specific structure and working principle of the mechanical seal cooling unit 46 are existing technologies and will not be described in detail here. Optionally, the mechanical seal cooling unit 46 can be selectively configured according to actual needs.

[0068] It should be understood that the mounting bracket 44 is used to effectively support the drive motor. Optionally, the power output end of the drive motor is equipped with a reducer and a coupling. The drive motor is used to connect to the stirring shaft 41 through the coupling. The connection structure and working principle of this part are existing technologies and will not be described in detail here.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas-liquid reaction apparatus characterized by comprising: The utility model relates to a reaction kettle body (1) is equipped with reaction cavity (11) in the inside, the top of reaction kettle body (1) is equipped with liquid phase pipe group (2) that extends to the reaction cavity (11) inside down, gas phase pipe group (3) from the side of reaction kettle body (1) is into the reaction cavity (11) in, and extends to the bottom of reaction cavity (11), and the extension of gas phase pipe group (3) is equipped with the spray gun (33) that sprays up, and stirring assembly (4) is along the vertical direction and is equipped in the reaction cavity (11), and stirring assembly (4) includes the stirring shaft (41) that one end extends down to near the bottom of reaction cavity (11), and the stirring shaft (41) is equipped with the axial flow stirring disc (42) and radial flow stirring disc (43) that set up in the interval up and down, wherein, radial flow stirring disc (43) is close to the spray end of spray gun (33) down, and axial flow stirring disc (42) is placed above the outflow end of liquid phase pipe group (2), and is close to the outflow end of liquid phase pipe group (2) setting. The axial flow stirring disc (42) includes a plurality of groups of first blades (421) spaced around the stirring shaft (41); in the axial direction of the stirring shaft (41), the first blades (421) are curved surface structures that curve outward from the stirring shaft (41). The axial flow stirring disc (42) further includes: a mounting ring (422) fitted and fixed outside the stirring shaft (41) and placed above the outflow end of the liquid phase pipe group (2); a plurality of connecting columns (423) corresponding to each of the plurality of groups of first blades (421); one end of the connecting column (423) is fixed with the mounting ring (422), and the other end is fixedly connected with the corresponding first blade (421). The radial flow stirring disc (43) includes:

2. The gas-liquid reaction apparatus according to claim 1, wherein a gas baffle (432) connected to the bottom of the stirring shaft (41) and covering the spray end of the spray gun (33) above; 3. The gas-liquid reaction apparatus according to claim 2, wherein a plurality of groups of second blades (431) spaced around the stirring shaft (41), each second blade (431) has one end fixed with the gas baffle (432) and the other end extending along the radial direction of the stirring shaft (41). The second blade (431) includes: a mounting portion (4311) fixed to the gas baffle (432) and extending along the radial direction of the gas baffle (432); 4. The gas-liquid reaction apparatus as claimed in claim 1, wherein an upper wing portion (4312) connected to the upper end of the mounting portion (4311); and a lower wing portion (4313) connected to the lower end of the mounting portion (4311); wherein, in the rotation direction of the gas baffle (432), the upper wing portion (4312) and the lower wing portion (4313) both extend backward, and the radial flow channel is formed between the lower wing portion (4313), the mounting portion (4311) and the upper wing portion (4312).

5. The gas-liquid reaction apparatus as claimed in claim 4, wherein The longitudinal section of the upper wing portion (4312), the longitudinal section of the mounting portion (4311) and the longitudinal section of the lower wing portion (4313) are sequentially connected and form a parabolic arc structure. ​ ​ ​ ​ 6. The gas-liquid reaction apparatus as claimed in claim 5, wherein ​ 7. The gas-liquid reaction apparatus as claimed in claim 6, wherein The extension length of the upper wing part (4312) is greater than the extension length of the lower wing part (4313) in the rotation direction of the baffle (432).

8. The gas-liquid reaction apparatus as claimed in claim 1, wherein The gas phase pipe group (3) comprises: A gas phase pipe (31) penetrates from the side of the reactor body (1) and extends downward to the bottom of the reaction cavity (11); a plurality of spray guns (33) are arranged on the gas phase pipe (31) at intervals; A mounting pipe (32) is fixed at one end to the inner wall of the reaction cavity (11) and at the other end to the penetrating end of the gas phase pipe (31).

9. The gas-liquid reaction apparatus as claimed in claim 8, wherein The gas phase pipe (31) and the mounting pipe (32) are connected in a U-shaped structure with the opening upward.

10. The gas-liquid reaction apparatus as claimed in claim 1, wherein The stirring assembly (4) further comprises: A mounting bracket (44) arranged at the top of the reactor body (1); A driving member (45) fixed to the mounting bracket (44), wherein the power output end of the driving member (45) penetrates into the mounting bracket (44); The upper end of the stirring shaft (41) penetrates into the mounting bracket (44) and is connected to the power output end of the driving member (45).

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