Reaction vessel
By designing gradient variable cross-section stirring blades and distributors in the reactor, the problem of uneven mixing of high-viscosity materials was solved, improving mixing efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI CHENGXIN
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, the high-viscosity materials are not mixed evenly in oil-water two-phase mixing reactions, resulting in a failure to guarantee product quality.
Design a reaction vessel with uniformly arranged first stirring blades on a stirring shaft. The thickness and width of the blades gradually decrease along the radial direction of the stirring shaft. The working surface of the blades is a concave transition curved surface, and the non-working surface is a flat surface. Combined with a stirring frame and a distributor, a gradient variable cross-section structure is formed to enhance the material disturbance and mixing effect.
It improves the mixing efficiency of oil-water two-phase reactions and high-viscosity materials, ensures product quality, avoids dead corners where material accumulates at the bottom of the reactor, and achieves thorough mixing of materials.
Smart Images
Figure CN224358452U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical equipment technology, and specifically relates to a reaction vessel. Background Technology
[0002] High-viscosity mixing reactions in oil-water two-phase reactions are an important type of reaction in chemical production. Various reactions in chemical production processes are typically carried out in reaction vessels, and the mixing effect between materials affects the smooth progress of the reaction. Materials in the reaction vessel are usually mixed using agitators. However, current mixing methods are relatively simple, especially in their inability to uniformly mix high-viscosity materials, leading to a compromise in the quality of the produced products. Utility Model Content
[0003] This utility model provides a reaction vessel, which aims to solve the technical problems of low material mixing efficiency and inability to guarantee product quality during oil-water two-phase reaction.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A reaction vessel is provided, comprising: a reaction vessel body and a stirring mechanism; a feeding pipe is provided at the top of the reaction vessel body, and a discharging pipe is provided at the bottom; the stirring mechanism includes a stirring motor, a stirring shaft extending into the reaction vessel body, and a stirrer disposed on the stirring shaft; the stirrer includes first stirring blades uniformly arranged along the axial direction of the stirring shaft, the thickness of the first stirring blades gradually decreasing along the radial direction away from the stirring shaft, and the width of the first stirring blades gradually decreasing along the radial direction away from the stirring shaft; and the working surface of the first stirring blades facing the rotation direction is a concave transition curved surface, and the surface of the first stirring blades facing away from the rotation direction is a flat surface;
[0005] The thickness of the first stirring blade is defined as along the axial direction of the stirring shaft, and the width of the first stirring blade is defined as the diameter of the stirring shaft perpendicular to the length of the stirring blade.
[0006] In one feasible embodiment, each of the first stirring blades is symmetrically arranged about the stirring shaft. The first stirring blades are divided into a root section, an intermediate transition section, and a terminal section along their length about the stirring shaft. The thickness of the root section is 20mm-35mm, and the distance from the boundary of the root section to the axis of the stirring shaft is ≤300mm. The thickness of the intermediate transition section is 12mm-18mm, and the thickness of the terminal section is reduced to 5mm-8mm.
[0007] In one possible implementation, the width of the first stirring blade is divided into a root fixed section and an end working section along its length with the stirring shaft as the center; the width of the root fixed section is 150mm-200mm, and the width of the end working section is 80mm-120mm.
[0008] In one possible embodiment, the stirrer further includes a stirring frame mounted on the stirring shaft, wherein a third stirring blade and a fourth stirring blade are provided on the bottom crossbar of the stirring frame, both the third stirring blade and the fourth stirring blade extending toward the bottom of the reactor body, the distance of the third stirring blade from the stirring shaft being greater than the distance of the fourth stirring blade from the stirring shaft, and the length of the third stirring blade being less than the length of the fourth stirring blade.
[0009] In one feasible embodiment, the axial distance between the end of the fourth stirring blade and the bottom of the reactor body is 5mm-10mm.
[0010] In one possible implementation, a second stirring blade is provided on the vertical rod of the stirring frame; the shape and size of the second stirring blade are the same as those of the first stirring blade, and the second stirring blade and the first stirring blade are staggered along the axial direction of the stirring shaft.
[0011] In one feasible embodiment, the distance between the end of the second stirring blade and the inner wall of the reactor vessel is 10mm-20mm.
[0012] In one feasible embodiment, the vertical distance between adjacent first and second stirring blades along the axis of the stirring shaft is 300mm-400mm.
[0013] In one possible implementation, the radial distance between the end of the first stirring blade and the stirring frame is 20mm-30mm; the radial distance between the end of the second stirring blade and the stirring shaft is 20mm-30mm.
[0014] In one possible implementation, a distributor is further provided inside and above the reactor body. The distributor is a circular tube with a downward-opening discharge port at the bottom and a feed inlet at the top.
[0015] Compared with the prior art, the reactor provided by this utility model has the following advantages: The first stirring blades, with their gradually decreasing thickness and width along the stirring axis, form a gradient variable cross-section structure. During the stirring process, different points on the first stirring blades exert different directional disturbance forces on the material. This allows the material to move in the main direction along with the rotation direction of the first stirring blades, while the material movement along different tracks can also intersect due to the action of different points on the first stirring blades, creating micro-disturbances and improving the uniformity of material mixing. Furthermore, the concave transition surface of the working surface of the first stirring blades increases the amount of material that the blades contact instantaneously, further enhancing the stirring effect. The flat, non-working surface of the first stirring blades provides reverse support to the working surface, ensuring sufficient force for stirring rotation and improving stirring efficiency and effect.
[0016] This application changes the conventional flat stirring paddle or stirring blade. Through the structural and shape design of the first stirring blade, it can improve the efficiency of oil-water two-phase reaction and high-viscosity material mixing, thereby improving product quality. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the reaction vessel provided in an embodiment of the present utility model;
[0018] Figure 2 A schematic diagram of the structure of the distributor provided in an embodiment of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the first stirring blade provided in an embodiment of the present invention;
[0020] Figure 4 A top view of the stirrer provided in an embodiment of this utility model;
[0021] Figure 5 A schematic diagram of the movement trajectory of the material under the stirring of the first stirring blade provided in an embodiment of this utility model;
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Reactor body; 2. Stirring motor; 3. Stirring shaft; 4. Second feed pipe; 5. Third feed pipe; 6. First feed pipe; 7. Distributor; 8. Sampling port; 9. Stirring frame; 10. First stirring blade; 11. First thermometer; 12. Second thermometer; 13. Third stirring blade; 14. Discharge pipe; 15. Discharge hole; 16. Feed inlet; 18. Fourth stirring blade; 19. Second stirring blade; 20. Working surface; 21. Flat surface. Detailed Implementation
[0024] 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.
[0025] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.
[0026] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.
[0027] In the claims, description, and accompanying drawings of this utility model, the terms "length," "width," "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "high," "low," "axial," "radial," and "circumferential" are used to indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the invention 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. Therefore, they should not be construed as limiting the specific scope of protection of this invention.
[0028] In this application, axial uniformity refers to the axial direction of the stirring shaft, and radial uniformity refers to the diameter direction of the stirring shaft.
[0029] Please see Figures 1 to 5 As shown, the reaction vessel provided by this utility model will now be described. The reaction vessel includes a reaction vessel body 1 and a stirring mechanism; a feeding pipe is provided at the top of the reaction vessel body 1, and a discharging pipe 14 is provided at the bottom; the stirring mechanism includes a stirring motor 2, a stirring shaft 3 extending into the reaction vessel body 1, and a stirrer provided on the stirring shaft 3; the stirrer includes first stirring blades 10 uniformly arranged along the axial direction of the stirring shaft 3, the thickness of the first stirring blades 10 gradually decreases along the radial direction of the stirring shaft 3 away from the stirring shaft 3, and the width of the first stirring blades 10 gradually decreases along the radial direction of the stirring shaft 3 away from the stirring shaft 3; and the working surface 20 of the first stirring blades 10 facing the rotation direction is a concave transition curved surface, and the surface of the first stirring blades 10 facing away from the rotation direction is a flat surface 21.
[0030] The thickness of the first stirring blade 10 is defined as along the axial direction of the stirring shaft 3, and the width of the first stirring blade 10 is defined as the diameter of the stirring shaft 3 perpendicular to the length of the stirring blade.
[0031] It should be noted that while the first stirring blades 10 are evenly distributed along the axial direction of the stirring shaft 3, two to three first stirring blades 10 can be evenly distributed around the circumference of the stirring shaft 3 at the same level along the axial direction of the stirring shaft 3. Thus, the included angle between adjacent first stirring blades 10 at the same level can be 90°, 45° or 60°, etc.
[0032] Compared with the prior art, the reactor provided by this utility model has the following advantages: The first stirring blade 10, with its gradually decreasing thickness and width along the stirring shaft 3, forms a gradient variable cross-section structure. During the stirring process, different points on the first stirring blade 10 exert different directional disturbance forces on the material. This allows the material to move in the main direction along with the rotation direction of the first stirring blade 10, while the material movement on different rotation tracks can also cross tracks due to the action of different points on the first stirring blade 10, forming micro-disturbances and improving the uniformity of material mixing. Furthermore, the concave transition surface of the working surface 20 of the first stirring blade 10 increases the amount of material that the first stirring blade 10 contacts instantaneously, further enhancing the stirring effect. The non-working surface 20 of the first stirring blade 10 is a flat surface 21, providing reverse support to the working surface 20 of the first stirring blade 10, ensuring sufficient force for stirring rotation and improving stirring efficiency and effect.
[0033] This application changes the conventional flat stirring paddle or stirring blade. Through the structural and shape design of the first stirring blade 10, it can improve the efficiency of oil-water two-phase reaction and high-viscosity material mixing, thereby improving product quality.
[0034] To more clearly represent the trajectory of material mixing, Figure 5 Taking this as an example, the material rotates and mixes in the direction of rotation of the first stirring blade 10, which is the main direction of material movement a. The material rotates on concentric circular tracks c centered on the stirring shaft 3, and the material on different tracks c cannot be effectively mixed. However, through the design of the working surface 20 of the first stirring blade 10, the material on different tracks will deviate from its own movement track and move to other tracks. In this way, the material on different tracks in the same layer will cross to different tracks and form a mixture under the action of the turbulence direction b. Similarly, the material in different layers along the axis of the stirring shaft 3 will also cross-mix, thereby improving the mixing effect of the material.
[0035] In some embodiments, see Figure 1 and Figure 4As shown, each first stirring blade 10 is symmetrically arranged around the stirring shaft 3. The first stirring blade 10 is divided into a root section, a middle transition section, and a terminal section along its length, centered on the stirring shaft 3. The root section has a thickness of 20mm-35mm, and the distance from the boundary of the root section to the axis of the stirring shaft 3 is ≤300mm. The middle transition section has a thickness of 12mm-18mm, and the terminal section's thickness decreases to 5mm-8mm. This ensures a firm connection between the root of the first stirring blade 10 and the stirring shaft 3, while the gradually changing thickness enhances the stirring effect.
[0036] In some embodiments, see Figure 1 and Figure 4 As shown, the width of the first stirring blade 10 is divided into a root fixed section and an end working section along its length, centered on the stirring shaft 3. The width of the root fixed section is 150mm-200mm, and the width of the end working section is 80mm-120mm. This ensures the firm connection between the root of the first stirring blade 10 and the stirring shaft 3, and improves the stirring effect.
[0037] In some embodiments, see Figure 1 and Figure 4 As shown, the stirrer also includes a stirring frame 9 mounted on the stirring shaft 3. A third stirring blade 13 and a fourth stirring blade 18 are provided on the bottom crossbar of the stirring frame 9. Both the third stirring blade 13 and the fourth stirring blade 18 extend towards the bottom of the reactor body 1. The distance between the third stirring blade 13 and the stirring shaft 3 is greater than the distance between the fourth stirring blade 18 and the stirring shaft 3, and the length of the third stirring blade 13 is less than the length of the fourth stirring blade 18.
[0038] The material at the bottom of the reactor body 1 is not easily stirred, and the material settles at the bottom of the reactor body 1 and gradually accumulates, creating dead corners. In order to further ensure the mixing effect of the material, the third stirring blade 13 and the fourth stirring blade 18 set on the bottom crossbar work together to make up for the lack of mixing of the material at the bottom of the reactor body 1, and effectively improve the uniformity of material mixing at the bottom of the reactor body 1.
[0039] In some embodiments, see Figure 1 As shown, the axial distance between the end of the fourth stirring blade 18 and the bottom of the reactor body 1 is 5mm-10mm. This provides a safety space to prevent the fourth stirring blade 18 from contacting the bottom of the reactor body 1.
[0040] In some embodiments, see Figure 1As shown, a second stirring blade 19 is provided on the vertical rod of the stirring frame 9; the shape and size of the second stirring blade 19 are the same as those of the first stirring blade 10, and the second stirring blade 19 and the first stirring blade 10 are staggered along the axial direction of the stirring shaft 3. The second stirring blade 19 fills the stirring blank area of the first stirring blade 10 and strengthens the stirring area at the end of the first stirring blade 10.
[0041] The disturbance effect of the second stirring blade 19 further increases the stirring area of the material inside the reactor body 1, enabling the material inside the reactor body 1 to be more thoroughly mixed. The close proximity of the second stirring blade 19 to the inner wall of the reactor body 1 ensures that the material is fully stirred and avoids dead zones. At the same time, the staggered arrangement of the first stirring blade 10 and the second stirring blade 19 ensures thorough lateral shearing of the material inside the reactor body 1, guaranteeing a uniform mixing degree.
[0042] For example, both the first stirring blade 10 and the second stirring blade 19 adopt a three-dimensional curved surface structure that combines a cuboid base with a tapered cone, forming a wedge structure that conforms to non-Newtonian fluid dynamics, providing multi-directional motion trajectories for the material.
[0043] In some embodiments, see Figure 1 As shown, the distance between the end of the second stirring blade 19 and the inner wall of the reactor body 1 is 10mm-20mm to avoid scratching the inner wall of the reactor body 1.
[0044] In some embodiments, see Figure 1 As shown, the vertical distance between adjacent first stirring blade 10 and second stirring blade 19 along the axis of stirring shaft 3 is 300mm-400mm.
[0045] In some embodiments, see Figure 1 As shown, the radial distance between the end of the first stirring blade 10 and the stirring frame 9 is 20mm-30mm; the radial distance between the end of the second stirring blade 19 and the stirring shaft 3 is 20mm-30mm.
[0046] The reaction vessel provided in this application is described in [reference]. Figure 1 and Figure 2 As shown, it also includes a distributor 7 disposed inside and above the reactor body 1. The distributor 7 is a circular tube with a downward-opening discharge port 15 at the bottom and a feed port 16 at the top. The material enters the interior of the distributor 7 through the second feed pipe 4 and the third feed pipe 5 along the feed port 16, and then enters the reactor body 1 through the discharge port 15 at the bottom of the distributor 7. This allows the material to be evenly distributed and dripped into the reactor body 1, and the material forms a spray when flowing through the discharge port 15, uniformly atomizing the material and increasing the contact area between the materials.
[0047] For example, the center-to-center distance between two adjacent discharge holes 15 is 4.0mm-6.0mm, the diameter of the discharge hole 15 is 2.5mm-3.0mm, and the shape of the discharge hole 15 is trumpet-shaped, so that the material is added to the reactor body 1 in a radial manner, increasing the area of material spraying.
[0048] The combined action of the distributor 7 and the agitator ensures that during the shearing and mixing process of the agitator blades, the added material will quickly mix and react with the material in the vessel through the shearing gap of the agitator blades, thus improving the mixing efficiency of the material. The distributor 7 adopts a two-end feeding method, which not only ensures the uniformity of the liquid droplet acceleration rate, but also plays a balancing and fixing role for the distributor 7.
[0049] The materials required for the reaction are dripped into the reactor body 1 through the feed pipe and the discharge hole 15 on the distributor 7. The funnel-shaped discharge hole 15 allows the materials to be sprayed into the reactor, which can make the materials more evenly dispersed and greatly increase the contact area of the materials in the reactor. Secondly, the stirring frame 9 and multiple sets of stirring blades on the stirring mechanism can fully shear the materials in the reactor, making the materials in the reactor more fully contacted. At the same time, the multiple sets of stirring blades at the bottom of the stirrer can ensure that the materials at the bottom of the reactor are fully stirred, effectively avoiding the formation of dead corners for material accumulation at the bottom of the reactor.
[0050] The working principle of the reaction vessel provided by this utility model is as follows: The first raw material required for the reaction is added into the interior of the reaction vessel body 1 through the first feeding pipe 6. The stirring motor 2 drives the stirring shaft 3 to rotate, stirring the material added into the reaction vessel body 1. At the same time, the second raw material required for the reaction is introduced into the reaction vessel body 1 through the second feeding pipe 4 and the third feeding pipe 5 via the feed inlet 16 on the distributor 7, and slowly dripped into the reaction vessel body 1 through the discharge hole 15 at the bottom of the distributor 7, reacting with the material inside the reaction vessel body 1. The temperature changes during the reaction process are tracked and monitored by the first thermometer 11 and the second thermometer 12 installed on the lower side of the reaction vessel body 1.
[0051] During the dripping of the second raw material, the raw material can form a spray when it passes through the funnel-shaped discharge hole 15 on the distributor 7, which greatly increases the contact area between the second raw material and the first raw material. During the reaction between the first and second raw materials, the stirring shaft 3 drives the stirring frame 9 and the first stirring blade 10 to rotate. Under the driving force of the stirring frame 9, the second stirring blade 19 is also driven to rotate. Through the strong lateral shearing action of the first stirring blade 10 and the second stirring blade 19, the materials inside the reactor body 1 can be fully mixed in a short time, thereby ensuring the reaction effect between the raw materials.
[0052] The stirring shaft 3 simultaneously drives the third stirring blade 13 and the fourth stirring blade 18 to rotate. Through the rotation of the third stirring blade 13 and the fourth stirring blade 18, the liquid material at the bottom of the reactor body 1 can be fully disturbed, which can effectively avoid the problem of material accumulation dead corners at the bottom of the reactor body 1. When the material inside the reactor body 1 reaches the endpoint, it is sampled and monitored through the sampling port 8, and then discharged through the discharge pipe 14.
[0053] The present invention provides a simple reaction vessel structure that enables materials added to the reaction vessel to be quickly and thoroughly mixed in a short time, maximizing the mixing efficiency of materials in the reaction vessel and creating a structural guarantee for ensuring the quality of the produced products.
[0054] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0055] 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 reaction vessel, characterized in that, include: Reactor body and stirring mechanism The reactor body (1) is provided with a feeding pipe at the top and a discharging pipe (14) at the bottom; The stirring mechanism includes a stirring motor (2), a stirring shaft (3) extending into the reactor body (1), and a stirrer mounted on the stirring shaft (3); The stirrer includes first stirring blades (10) uniformly arranged along the axis of the stirring shaft (3). The thickness of the first stirring blades (10) gradually decreases in the radial direction away from the stirring shaft (3), and the width of the first stirring blades (10) gradually decreases in the radial direction away from the stirring shaft (3). The working surface (20) of the first stirring blades (10) facing the rotation direction is a concave transition surface, and the surface of the first stirring blades (10) facing away from the rotation direction is a flat surface (21). The thickness of the first stirring blade (10) is defined as along the axial direction of the stirring shaft (3), and the width of the first stirring blade (10) is defined as the diameter of the stirring shaft (3) perpendicular to the length of the stirring blade.
2. The reaction vessel as described in claim 1, characterized in that, Each of the first stirring blades (10) is symmetrically arranged with the stirring shaft (3) as the center. The first stirring blades (10) are divided into a root section, an intermediate transition section and a terminal section along the length direction of the stirring shaft (3) as the center. The thickness of the root section is 20mm-35mm, and the distance from the boundary of the root section to the axis of the stirring shaft (3) is ≤300mm. The thickness of the intermediate transition section is 12mm-18mm, and the thickness of the terminal section is reduced to 5mm-8mm.
3. The reaction vessel as described in claim 2, characterized in that, The width of the first stirring blade (10) is divided into a root fixed section and an end working section along its length direction with the stirring shaft (3) as the center; the width of the root fixed section is 150mm-200mm, and the width of the end working section is 80mm-120mm.
4. The reaction vessel as described in claim 3, characterized in that, The stirrer also includes a stirring frame (9) mounted on the stirring shaft (3). A third stirring blade (13) and a fourth stirring blade (18) are provided on the bottom crossbar of the stirring frame (9). Both the third stirring blade (13) and the fourth stirring blade (18) extend towards the bottom of the reactor body (1). The distance between the third stirring blade (13) and the stirring shaft (3) is greater than the distance between the fourth stirring blade (18) and the stirring shaft (3), and the length of the third stirring blade (13) is less than the length of the fourth stirring blade (18).
5. The reaction vessel as described in claim 4, characterized in that, The axial distance between the end of the fourth stirring blade (18) and the bottom of the reactor body (1) is 5mm-10mm.
6. The reaction vessel as described in claim 4, characterized in that, The stirring frame (9) is provided with a second stirring blade (19) on its vertical rod; the shape and size of the second stirring blade (19) are the same as those of the first stirring blade (10), and the second stirring blade (19) and the first stirring blade (10) are staggered along the axial direction of the stirring shaft (3).
7. The reaction vessel as described in claim 6, characterized in that, The distance between the end of the second stirring blade (19) and the inner wall of the reactor body (1) is 10mm-20mm.
8. The reaction vessel as described in claim 6, characterized in that, The vertical distance between adjacent first stirring blade (10) and second stirring blade (19) along the axis of stirring shaft (3) is 300mm-400mm.
9. The reaction vessel as described in claim 6, characterized in that, The radial distance between the end of the first stirring blade (10) and the stirring frame (9) is 20mm-30mm; the radial distance between the end of the second stirring blade (19) and the stirring shaft (3) is 20mm-30mm.
10. The reaction vessel as described in claim 1, characterized in that, It also includes a distributor (7) disposed inside the reactor body (1) and located on its upper part. The distributor (7) is a round tube with a downward-opening discharge hole (15) at the bottom and a feed inlet (16) at the top.