Epoxidized soybean oil oxidation kettle
By setting a high-level tank and an internal drain plate at the top of the oxidation reactor, combined with the design of the stirring shaft and stirring seat, the problem of mismatch between the structure and function of the oxidation reactor and the process was solved, thereby improving the oxidation efficiency and mixing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANYANG CITY AUX CHEM PLANT
- Filing Date
- 2025-05-10
- Publication Date
- 2026-05-19
AI Technical Summary
The existing oxidation reactor's structure and function are mismatched with the oxidation process, resulting in low oxidation efficiency.
Multiple high-level tanks are set at the top of the oxidation reactor, with a drain pan and a stirring shaft inside. The stirring shaft has a stirring seat at the end, and the stirring blades are designed with a conical surface. Combined with a spiral steam duct, pre-mixing and thorough stirring are achieved.
It improves oxidation efficiency, achieves thorough mixing and stirring of raw materials, and meets process requirements.
Smart Images
Figure CN224252794U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of epoxidized soybean oil oxidation kettle, specifically, it relates to an epoxidized soybean oil oxidation kettle. Background Technology
[0002] Epoxidized soybean oil is a widely used plasticizer and stabilizer for polyvinyl chloride (PVC). It can significantly improve the thermal and light stability of plastic products. Furthermore, epoxidized soybean oil is non-toxic and transparent, making it suitable as a plasticizer for food packaging materials—environmentally friendly, safe, and healthy. Epoxidized soybean oil is a mixture of fatty acid esters of glycerol, mainly produced by the oxidation of soybean oil, organic acids, and hydrogen peroxide under the action of a catalyst. Existing processes require an oxidation reactor, which involves multiple drippings of the raw materials, as well as stirring and heating. The structure and function of existing oxidation reactors are incompatible with the oxidation process, and the stirring performance of the stirring shaft is also generally poor, affecting the oxidation efficiency. To improve oxidation efficiency, an epoxidized soybean oil oxidation reactor is proposed. Utility Model Content
[0003] In view of this, the technical problem to be solved by this utility model is to provide an epoxidized soybean oil oxidation kettle, which solves the problem of mismatch between the structure and function of the oxidation kettle and its oxidation process in the prior art, and slow oxidation efficiency.
[0004] To solve the above-mentioned technical problems, this utility model discloses an epoxidized soybean oil oxidation kettle, including: an oxidation kettle; a motor is provided at the top of the oxidation kettle, and multiple high-level grooves are provided around the circumference of its side wall. A liquid guide pipe is provided at the bottom of the high-level grooves and extends into the kettle body. A solenoid valve is provided on the liquid guide pipe. A leakage plate is provided inside the oxidation kettle. The leakage plate is located below the outlet end of the liquid guide pipe. The edge of the leakage plate is fixed to the inner wall of the kettle body. A bearing seat is provided at the bottom center of the leakage plate. A stirring shaft is set through the bearing seat. The motor is connected to one end of the stirring shaft. A spiral steam duct is provided in the lower middle part of the inner wall of the oxidation kettle. A blade and a stirring seat are provided on the stirring shaft. The blade is distributed along the axial direction. The stirring seat is located at the tail end of the stirring shaft.
[0005] Furthermore, the center of the aforementioned drain plate is a protrusion, the edge of the protrusion is a drain section, the edge of the drain section is a guide section, the bearing seat is located on the bottom surface of the protrusion, the drain section has multiple drain holes distributed in an array, and the guide section is inclined.
[0006] Furthermore, the two ends of the aforementioned stirring seat are conical surfaces, and a set of stirring blades spaced 180° apart are provided on each of the two conical surfaces. The two sets of stirring blades are not coplanar.
[0007] Compared with the prior art, this application can achieve the following technical effects:
[0008] This invention features multiple high-level tanks on the outer wall of the oxidation reactor. These tanks store raw materials to facilitate multiple drippings as needed in the process. A drain plate inside the oxidation reactor serves as a pre-mixing agent, and the bearing seat on the drain plate enhances the rotational stability of the stirring shaft. A stirring seat is located at the tail end of the stirring shaft, which allows for better agitation of the mixture at the bottom of the oxidation reactor, resulting in more thorough mixing and improved oxidation efficiency.
[0009] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. Attached Figure Description
[0010] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0011] Figure 1 This is a schematic diagram of an oxidation reactor according to one embodiment of the present invention.
[0012] Attached Figure Labels
[0013] Oxidation vessel 1, motor 2, high-level tank 3, liquid guide pipe 4, solenoid valve 5, drain pan 6, bearing seat 7, stirring shaft 8, steam pipe 9, blade 10, stirring seat 11, protrusion 12, drain part 13, liquid guide part 14, drain hole 15, conical surface 16, stirring blade 17, fixed bracket 18. Detailed Implementation
[0014] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0015] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an oxidation reactor according to one embodiment of the present invention.
[0016] An epoxidized soybean oil oxidation reactor includes: an oxidation reactor 1; a motor 2 is provided on the top of the oxidation reactor 1, and multiple high-level grooves 3 are provided on the circumference of its side wall. A liquid guide pipe 4 is provided at the bottom of the high-level groove 3 and extends into the reactor body. A solenoid valve 5 is provided on the liquid guide pipe 4. A drain plate 6 is provided inside the oxidation reactor 1. The drain plate 6 is located below the outlet end of the liquid guide pipe 4. The edge of the drain plate 6 is fixed to the inner wall of the reactor body. A bearing seat 7 is provided at the bottom center of the drain plate 6. A stirring shaft 8 is installed through the bearing seat 7. The motor 2 is connected to one end of the stirring shaft 8. A spiral steam conduit 9 is fixed in the lower middle part of the inner wall of the oxidation reactor 1 by a fixing bracket 18. A blade 10 and a stirring seat 11 are provided on the stirring shaft 8. The two blades 10 are distributed along the axial direction and spaced 180° apart. The stirring seat 11 is located at the tail end of the stirring shaft 8.
[0017] The fixed bracket 18 has multiple arc grooves on one side, and the spacing between the arc grooves is the same as the pitch of the steam conduit 9. The three fixed brackets 18 are spaced 120° apart to fix the steam conduit 9 to the inner wall of the vessel. The steam conduit 9 can heat the mixture.
[0018] The center of the drain plate 6 is a protrusion 12, the edge of the protrusion 12 is a drain section 13, the edge of the drain section 13 is a guide section 14, the bearing seat 7 is located on the bottom surface of the protrusion 12, the drain section 13 is arranged with multiple drain holes 15, and the guide section 14 is inclined.
[0019] The two ends of the stirring base 11 are conical surfaces 16. Each of the two conical surfaces 16 is provided with a set of stirring blades 17 spaced 180° apart. The two sets of stirring blades 17 are at a 90° angle. The set of stirring blades 17 at the upper end can stir the liquid at the top, and the set of stirring blades 17 at the lower end can stir the liquid at the bottom of the vessel.
[0020] The oxidation process for producing epoxidized soybean oil requires soybean oil, formic acid, hydrogen peroxide, and sulfuric acid. Raw materials are injected into multiple high-level tanks 3. After the solenoid valve 5 is opened, the raw materials in the high-level tanks 3 flow into the reactor body through the liquid guide pipe 4 and drip onto the liquid guide section 14 of the liquid draining plate 6. The liquid guide section 14 collects the various raw materials into the liquid draining section 13, and the liquid draining hole 15 on the liquid draining section 13 allows the premixed liquid to flow into the mixed liquid in the lower part.
[0021] This invention features multiple high-level tanks 3 on the outer wall of the oxidation reactor 1. The high-level tanks 3 store raw materials to facilitate multiple drippings as needed in the process. A drain plate 6 is installed inside the oxidation reactor 1 to serve as a premixing agent. The bearing seat 7 on the drain plate 6 also improves the rotational stability of the stirring shaft 8. A stirring seat 11 is installed at the tail end of the stirring shaft 8. Its structure can better agitate the mixture at the bottom of the oxidation reactor, resulting in more thorough mixing and improved oxidation efficiency.
[0022] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. An epoxidation reactor for soybean oil, comprising: Oxidation reactor; The oxidation reactor is characterized by having a motor at the top, multiple high-level grooves on its side wall, a liquid guide pipe extending into the reactor body from the bottom of the high-level grooves, a solenoid valve on the liquid guide pipe, a drain plate inside the oxidation reactor located below the outlet end of the liquid guide pipe, the edge of the drain plate being fixed to the inner wall of the reactor body, a bearing seat at the center bottom of the drain plate, a stirring shaft passing through the bearing seat, a motor connected to one end of the stirring shaft, a spiral steam conduit in the lower middle part of the inner wall of the oxidation reactor, blades and a stirring seat on the stirring shaft, the blades being distributed along the axial direction, and the stirring seat being located at the tail end of the stirring shaft.
2. The epoxidized soybean oil oxidation reactor as described in claim 1, characterized in that, The center of the drain plate is a raised part, the edge of the raised part is a drain part, the edge of the drain part is a guide part, the bearing seat is located on the bottom surface of the raised part, the drain part is arrayed with multiple drain holes, and the guide part is inclined.
3. The epoxidized soybean oil oxidation reactor as described in claim 1, characterized in that, The two ends of the stirring seat are conical surfaces, and each of the two conical surfaces is provided with a set of stirring blades spaced 180° apart. The two sets of stirring blades are not coplanar.