Three-phase stirring reaction kettle
By employing a gas distribution pipe assembly with a guide cone and inclined pipe section design in a three-phase reactor, combined with radial and axial stirring mechanisms, the problem of solid particles clogging the gas distribution holes was solved, achieving more uniform three-phase mixing and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-24
AI Technical Summary
In conventional three-phase reactors, solid particles can easily clog the gas distribution holes, resulting in uneven gas distribution, low utilization, and reduced production efficiency.
The gas distribution pipe assembly is designed with a guide cone and inclined pipe section. The inclined pipe section opens downward to prevent solid phase from entering the gas distribution pipe. The guide cone is used to blow up the deposited solid phase particles. Combined with radial and axial stirring mechanisms, it ensures uniform mixing of the three phases.
It effectively avoids blockage of the gas distribution pipe assembly, improves gas utilization and the uniformity of three-phase mixing, and increases production efficiency.
Smart Images
Figure CN224025026U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of reaction kettle, specifically, a three -phase stirring reaction kettle. BACKGROUND
[0002] In the production process of chemical industry, the reaction of material is often carried out in the reaction kettle, and the conventional three -phase stirring reaction kettle generally includes kettle body, stirring device and gas distribution pipe group.
[0003] The common three -phase reaction kettle currently generally sets gas distribution hole for aeration on the gas distribution pipe group located at the bottom of the kettle body, but solid phase particles are easy to deposit in the actual application process, leading to the blockage of the gas distribution hole, and further leading to the problems of low gas distribution uniformity, low gas utilization rate and low reaction efficiency, which affect the production efficiency. UTILITY MODEL CONTENTS
[0004] The utility model aims to provide a three -phase stirring reaction kettle, which can improve the problem that solid phase particles are easy to block the distribution hole in the current three -phase reaction kettle, leading to low production efficiency.
[0005] The embodiment of the utility model can be realized as follows:
[0006] In the first aspect, the utility model provides a three -phase stirring reaction kettle, which includes kettle body, stirring device and gas distribution pipe group arranged in the kettle body, and further includes:
[0007] The flow guide cone is coaxially arranged at the bottom of the kettle body and has a conical surface extending towards the inside of the kettle body;
[0008] The gas distribution pipe group includes a gas conveying pipe section and an inclined pipe section, the gas conveying pipe section is arranged on the inner wall of the kettle body, the inclined pipe section is connected to the lower end of the gas conveying pipe section, the end of the inclined pipe section is inclined downward and extends towards the axis of the kettle body, so that the end of the inclined pipe section is opposite to the bottom of the flow guide cone.
[0009] In the optional implementation, the gas distribution pipe group is provided with a plurality of gas distribution pipe groups on the inner wall of the kettle body.
[0010] In the optional implementation, the angle between the inclined pipe section and the gas conveying pipe section is 110°-135°.
[0011] In the optional implementation, the stirring device includes a stirring shaft, a radial stirring mechanism arranged at one end of the stirring shaft close to the flow guide cone, and an axial stirring mechanism arranged at the middle part of the stirring shaft, the radial stirring mechanism is used for dispersing the gas output by the gas distribution pipe group into small bubbles, so that the liquid phase and the gas phase are fully mixed, and the axial stirring mechanism is used for making the liquid phase flow downward, so that the solid phase and the liquid phase are fully mixed.
[0012] In an optional embodiment, the radial stirring mechanism comprises a support disc coaxially connected to the stirring shaft and stirring blades embedded at 45° in the edge of the support disc.
[0013] In an optional embodiment, the axial distance between the support disc and the outlet of the inclined pipe section is 220-260mm.
[0014] In an optional embodiment, the radial distance between the edge of the stirring blade and the outlet of the inclined pipe section is 30-70mm.
[0015] In an optional embodiment, the diameter of the flow guide cone is greater than that of the support disc and smaller than that of the radial stirring mechanism.
[0016] In an optional embodiment, the axial stirring mechanism comprises a bent plate arranged on the stirring shaft, the bent plate having a downward bent portion at the end thereof for downwardly guiding the liquid phase material when the stirring shaft drives the axial stirring mechanism to rotate.
[0017] In an optional embodiment, the bent plate and the stirring blade are staggered in the axial direction of the stirring shaft.
[0018] The three-phase stirring reaction kettle provided by the embodiments of the present application has the following beneficial effects:
[0019] By setting the gas distribution pipe group as a gas conveying pipe section and an inclined pipe section, and inclining the opening of the inclined pipe section downward, the solid phase in the material is prevented from entering the gas distribution pipe group, and the gas distribution pipe group is prevented from being blocked to affect the production efficiency; meanwhile, a flow guide cone is arranged at the bottom of the kettle body, and the solid phase material deposits along the conical surface of the flow guide cone when falling and depositing, at this time, the airflow output by the inclined pipe section can blow the solid phase particles accumulated at the bottom of the conical surface again, so that the three-phase mixing is more uniform, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0021] Figure 1 The cross-sectional view provided by the present embodiment for showing the internal structure of the three-phase stirring reaction kettle;
[0022] Figure 2 The top view of the three-phase stirring reaction kettle provided by the present embodiment.
[0023] Icons: 100 - vessel body; 200 - stirring device; 210 - stirring shaft; 220 - radial stirring mechanism; 221 - support disk; 222 - stirring blade; 230 - axial stirring mechanism; 231 - bending plate; 232 - bending section; 300 - gas distribution pipe assembly; 310 - gas transmission pipe section; 320 - inclined pipe section; 400 - guide cone. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0027] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they 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.
[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0029] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0030] In chemical industrial production processes, material reactions often take place in reaction vessels. Three-phase stirred reactors are commonly used for solid-phase, liquid-phase, and gas-phase reactions. A three-phase stirred reactor generally includes a vessel body, a stirring device installed inside the vessel body, and a gas distribution pipe assembly for feeding gaseous materials into the vessel body.
[0031] Currently, gas distribution pipe assemblies are typically located at the bottom of the reactor vessel, with distribution holes for aeration. However, in practical applications, these distribution holes are often blocked by solid particles, leading to solid deposition, uneven gas distribution, low gas utilization, and consequently, reduced reaction efficiency and disruption to routine production. While increasing the aeration rate can prevent blockage and clear clogged distribution holes, this approach also suffers from low gas utilization and increased costs.
[0032] To address the problem of solid particles easily clogging the distribution pores and affecting production in traditional three-phase stirred reactors, this invention provides a solution. The overall structure, working principle, and technical effects of the three-phase stirred reactor provided by this invention are described in detail below with reference to embodiments and accompanying drawings.
[0033] Please refer to Figure 1 and Figure 2 The three-phase stirred reactor provided by this utility model is applied to processes involving solid-phase, liquid-phase, and gas-phase reactions in chemical industrial production, specifically, for example, in the process of dissolving and leaching battery materials with sulfur dioxide.
[0034] The three-phase stirred reactor includes a reactor body 100, a stirring device 200, and a gas distribution pipe assembly 300. The gas distribution pipe assembly 300 is disposed inside the reactor body 100 for introducing gaseous raw materials into the reactor body 100. The stirring device 200 is disposed inside the reactor body 100 for stirring the materials inside the reactor body 100, so that the solid, liquid, and gaseous raw materials inside the reactor body 100 are fully mixed and reacted. Furthermore, in this embodiment, a flow guide cone 400 is also provided at the bottom of the reactor body 100. The flow guide cone 400 is conical in shape and coaxially arranged with the reactor body 100, and the flow guide cone 400 has a conical surface extending toward the interior of the reactor body 100. The gas distribution pipe assembly 300 includes a gas delivery pipe section 310 and an inclined pipe section 320. In this embodiment, the gas delivery pipe section 310 is a vertical pipe section and is installed on the inner wall of the vessel body 100 parallel to the axial direction of the vessel body 100. The inclined pipe section 320 is connected to the lower end of the gas delivery pipe section 310, and the end of the inclined pipe section 320 is inclined downward and extends toward the axis of the vessel body 100. The end of the inclined pipe section 320 is opposite to the bottom of the conical surface.
[0035] By configuring the gas distribution pipe assembly 300 as a gas delivery pipe section 310 and an inclined pipe section 320, with the opening of the inclined pipe section 320 tilted downwards, the solid phase in the material is prevented from entering the gas distribution pipe assembly 300, thus avoiding blockage and affecting production efficiency. At the same time, a guide cone 400 is set at the bottom of the vessel body 100. When solid material is deposited, it will be deposited along the cone surface of the guide cone 400 and deposited at the bottom of the cone surface. At this time, the airflow output from the inclined pipe section 320 can blow up the solid particles accumulated at the bottom of the cone surface again, preventing solid phase deposition and making the three-phase mixing more uniform, thereby improving production efficiency.
[0036] Please refer to Figure 1 and Figure 2 In some optional embodiments, multiple gas distribution pipe groups 300 are provided on the inner wall of the vessel body 100, and the multiple gas distribution pipe groups 300 are equally spaced, which improves the efficiency of inputting gaseous raw materials into the vessel body 100. At the same time, multiple inclined pipe sections 320 simultaneously eject airflow to the bottom of the guide cone 400, which makes the effect of flushing up the deposited solid phase and entering the fluid circulation better.
[0037] Please refer to Figure 1 and Figure 2 In this embodiment, specifically, the angle between the inclined pipe section 320 and the gas supply pipe section 310 is 110°–135°, so that when the gas phase is introduced into the vessel body 100 through the gas distribution pipe group 300, the gas flow effectively impacts the deposited solids and impacts the solid material to rise along the conical surface and enter the fluid circulation.
[0038] Please refer to Figure 1 and Figure 2 In this embodiment, the stirring device 200 includes a stirring shaft 210, a radial stirring mechanism 220, and an axial stirring mechanism 230. One end of the stirring shaft 210 extends into the vessel body 100 along the axial centerline. The radial stirring mechanism 220 is located at the end of the stirring shaft 210 within the vessel body 100 and near the guide cone 400. The axial stirring mechanism 230 is located in the middle of the stirring shaft 210 and within the vessel body 100. When the gas distribution pipe assembly 300 inputs gaseous raw materials into the vessel body 100, the radial stirring mechanism 220 disperses the gas output from the gas distribution pipe assembly 300 into small bubbles, increasing the contact area between the gas and liquid phases, allowing the liquid and gas phases to mix thoroughly and undergo component exchange. The axial stirring mechanism 230 guides the liquid material downwards during operation, causing the liquid phase to flow downwards and forming a good circulating fluid within the vessel body 100, ensuring thorough mixing of the solid and liquid phases and preventing excessively high or low local concentrations within the vessel body 100 from affecting the reaction rate.
[0039] Please refer to Figure 1 and Figure 2In some optional embodiments, the radial stirring mechanism 220 includes a support disk 221 and stirring blades 222. The support disk 221 is coaxially connected to the stirring shaft 210, and multiple stirring blades 222 are embedded at a 45° angle on the edge of the support disk 221, with some of the stirring blades 222 extending beyond the support disk 221. In this embodiment, four stirring blades 222 are evenly spaced on the support disk 221. In other embodiments, the number of stirring blades 222 can be set according to requirements.
[0040] Please refer to Figure 1 and Figure 2 To ensure the radial stirring mechanism 220 effectively disperses the gas output from the inclined tube section 320, thereby facilitating thorough mixing and reaction of the gaseous and liquid phase materials, in some alternative embodiments, the axial distance between the support disc 221 and the outlet of the inclined tube section 320 is 220mm-260mm. This ensures that the gas ejected from the inclined tube section 320 effectively lifts the deposited solid material while simultaneously allowing the radial stirring mechanism 220 to make sufficient contact with the gas. Furthermore, the radial distance between the edge of the stirring blade 222 and the outlet of the inclined tube section 320 is 30mm-70mm. This arrangement ensures that the gas ejected from the outlet of the inclined tube section 320 faces the stirring blade 222 as it rises, enhancing the dispersing effect of the stirring blade 222 on the gas, thus resulting in more thorough mixing of the gaseous and liquid phase materials and improving reaction efficiency.
[0041] Please refer to Figure 1 and Figure 2 In this embodiment, the diameter of the guide cone 400 is larger than the diameter of the support disk 221 and smaller than the diameter of the radial stirring mechanism 220. With the above arrangement, when the solid material is deposited at the bottom of the guide cone 400 along the guide cone 400, the deposited solid material is directly opposite the stirring blade 222. On the one hand, this facilitates the radial stirring mechanism 220 to stir the deposited solid material when it is working. On the other hand, it allows the gas rushing out of the inclined pipe section 320 to directly contact the radial stirring mechanism 220 when it lifts the deposited solid material, thereby improving the stirring effect and enabling the solid, liquid, and gas phases to react fully.
[0042] Please refer to Figure 1 and Figure 2In this embodiment, the axial stirring mechanism 230 includes a bent plate 231. Four bent plates 231 are evenly spaced on the stirring shaft 210, and each bent plate 231 has a bent portion 232 at its end, forming an obtuse angle between the bent portion 232 and the bent plate 231 towards the radial stirring mechanism 220. The bent plates 231 are arranged horizontally, so that when the stirring shaft 210 drives the axial stirring mechanism 230 to rotate, the bent portion 232 guides the liquid material downward, thereby pushing the liquid material downward and forming a good circulating flow within the vessel 100, ensuring thorough mixing of the solid and liquid materials within the vessel 100. In some alternative embodiments, the axial stirring mechanism 230 can also be configured as an arc-shaped plate with an opening facing downward. The axial stirring mechanism 230 only needs to fulfill the function of guiding the liquid material downward; the present invention does not limit the specific structural form of the axial stirring mechanism 230.
[0043] For further details, please refer to Figure 1 and Figure 2 In order to obtain a better circulating flow field, the bending plate 231 of the axial stirring mechanism 230 and the stirring blade 222 of the radial stirring mechanism 220 are staggered in the axial direction of the stirring shaft 210.
[0044] In summary, the implementation principle of the three-phase stirred reactor provided by this utility model is as follows: by setting the gas distribution pipe group 300 as a gas delivery pipe section 310 and an inclined pipe section 320, with the opening of the inclined pipe section 320 tilted downwards, the solid phase in the material is prevented from entering the gas distribution pipe group 300, thus avoiding blockage of the gas distribution pipe group 300 and affecting production efficiency; at the same time, a guide cone 400 is set at the bottom of the reactor body 100, and the solid particles fall along the cone surface of the guide cone 400 during the fixed deposition, and the airflow output from the inclined pipe section 320 can blow up the solid particles accumulated at the bottom of the cone surface again, making the three-phase mixing more uniform and improving production efficiency.
[0045] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A three-phase stirred reactor, comprising a reactor body, a stirring device disposed within the reactor body, and a gas distribution pipe assembly, characterized in that, Also includes: A flow guide cone is coaxially disposed at the bottom of the vessel body and has a conical surface extending toward the inside of the vessel body; The gas distribution pipe assembly includes a gas delivery pipe section and an inclined pipe section. The gas delivery pipe section is disposed on the inner wall of the vessel body, and the inclined pipe section is connected to the lower end of the gas delivery pipe section. The end of the inclined pipe section is inclined downward and extends toward the axis of the vessel body so that the end of the inclined pipe section is opposite to the bottom of the guide cone.
2. The three-phase stirred reactor according to claim 1, characterized in that, Multiple sets of gas distribution pipes are provided on the inner wall of the reactor.
3. The three-phase stirred reactor according to claim 1, characterized in that, The angle between the inclined pipe section and the gas transmission pipe section is 110°–135°.
4. The three-phase stirred reactor according to any one of claims 1-3, characterized in that, The stirring device includes a stirring shaft, a radial stirring mechanism disposed at one end of the stirring shaft near the guide cone, and an axial stirring mechanism disposed in the middle of the stirring shaft. The radial stirring mechanism is used to disperse the gas phase output from the gas distribution pipe group into small bubbles so as to fully mix the liquid phase and the gas phase. The axial stirring mechanism is used to make the liquid phase flow downward so as to fully mix the solid phase and the liquid phase.
5. The three-phase stirred reactor according to claim 4, characterized in that, The radial stirring mechanism includes a support disk and stirring blades. The support disk is coaxially connected to the stirring shaft, and a plurality of stirring blades are embedded at 45° on the edge of the support disk.
6. The three-phase stirred reactor according to claim 5, characterized in that, The axial distance between the support disc and the outlet of the inclined pipe section is 220mm-260mm.
7. The three-phase stirred reactor according to claim 5, characterized in that, The radial distance between the edge of the stirring blade and the outlet of the inclined pipe section is 30mm-70mm.
8. The three-phase stirred reactor according to claim 5, characterized in that, The diameter of the guide cone is larger than the diameter of the support disk but smaller than the diameter of the radial stirring mechanism.
9. The three-phase stirred reactor according to claim 5, characterized in that, The axial stirring mechanism includes a bent plate disposed on the stirring shaft. The end of the bent plate has a downwardly bent portion for guiding the liquid material downward when the stirring shaft drives the axial stirring mechanism to rotate.
10. The three-phase stirred reactor according to claim 9, characterized in that, The bent plates and the stirring blades are arranged alternately in the axial direction of the stirring shaft.