Separating type reaction kettle for preparing castor oil derivative

Abstract

The utility model discloses a separation type reaction kettle for preparing castor oil derivatives, which relates to the technical field of chemical machinery and comprises a kettle body, the top of the kettle body is communicated with a rectification condensing device, the rectification condensing device comprises a rectifier, a heat exchanger, a condenser and a buffer tank which are communicated in sequence, and the rectifier and the heat exchanger are vertically arranged. The bottom of the rectifier is communicated with the top of the kettle body, the heat exchanger is positioned above the rectifier, the condenser is obliquely arranged downwards, the buffer tank is arranged below the condenser, a vacuum system interface is formed in the top of the buffer tank, and a recycled material discharge port is formed in the bottom of the buffer tank; a feeding hole is formed in the upper part of the kettle body; a temperature adjusting assembly and a stirring assembly are arranged in the kettle body; the bottom of the kettle body is of an inverted-cone-shaped structure used for standing layering, and a derivative discharging opening is formed in the bottom of the inverted-cone-shaped structure. According to the utility model, through physical separation of different areas of the kettle body, the traditional multi-equipment process is integrated into a single reaction kettle to be completed, so that the production goals of high efficiency, low consumption and environmental protection are realized.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery technology, and in particular to a separate reaction vessel for preparing castor oil derivatives. Background Technology

[0002] Castor oil, an important natural triglyceride compound, possesses a molecular structure characterized by both hydroxyl groups and long fatty acid chains, exhibiting significant advantages such as a low freezing point, high flash point, strong renewability, high biodegradability, and low ecotoxicity. This non-edible vegetable oil, derived from castor seeds, is primarily produced in India, Brazil, China, and Southeast Asia. As an environmentally friendly industrial raw material, it demonstrates unique value in reducing carbon emissions and environmental pollution. Currently, its applications cover a diverse range of fields, including pharmaceuticals (laxatives), machinery (lubricants), polymer materials (plasticizers), fine chemicals (emulsifiers, coatings, adhesives), and printing (inks).

[0003] Castor oil is a brownish-yellow oily substance, characterized by high polarity, easy emulsification, and dark color. Preparing derivatives through chemical reactions not only increases its activity and hydroxyl content but also reduces its color and viscosity, expanding its applications in polyurethane coatings, potting compounds, and structural adhesives. The production of castor oil derivatives typically requires multiple pieces of equipment, such as reaction vessels, separation tanks, acid neutralization tanks, washing tanks, and dehydration tanks. This process suffers from drawbacks including incomplete reaction, incomplete separation, long production lines, high energy consumption, low efficiency, environmental pollution, and risks to the safety and health of production personnel.

[0004] Therefore, developing a closed, multifunctional reactor for synthesizing castor oil derivatives is of great significance for improving production efficiency, reducing costs, minimizing environmental pollution, and enhancing equipment safety. Utility Model Content

[0005] The purpose of this invention is to provide a separate reaction vessel for preparing castor oil derivatives, in order to solve the problems existing in the prior art. It integrates the traditional multi-equipment process into a single reaction vessel, reduces energy loss and pollution risks caused by material transfer, improves reaction efficiency, and ultimately achieves the production goals of high efficiency, low consumption, and environmental protection.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A separation reactor for preparing castor oil derivatives includes a reactor body. A distillation and condensation device is connected to the top of the reactor body. The distillation and condensation device includes a distiller, a heat exchanger, a condenser, and a buffer tank connected in sequence. The distiller and heat exchanger are vertically arranged. The bottom of the distiller is connected to the top of the reactor body. The heat exchanger is located above the distiller. The condenser is inclined downwards. The buffer tank is located below the condenser. A vacuum system interface is provided at the top of the buffer tank, and a recovery material discharge port is provided at the bottom of the buffer tank. A feed inlet is provided at the top of the reactor body. A temperature control component and a stirring component are provided inside the reactor body. The bottom of the reactor body has an inverted conical structure for static stratification, and a derivative discharge port is provided at the bottom of the inverted conical structure.

[0008] In an exemplary embodiment, the feed inlet includes a castor oil feed inlet, a catalyst feed inlet, a sulfuric acid feed inlet, a deionized water feed inlet, and a nitrogen inlet.

[0009] In one exemplary embodiment, the temperature control assembly includes a heating mechanism and a cooling mechanism.

[0010] In an exemplary embodiment, the heating mechanism includes a heat-conducting pipe spirally wound and embedded in the inner wall of the vessel, the two ends of which are connected to the outside through a first inlet and a first outlet.

[0011] In an exemplary embodiment, the cooling mechanism includes a cooling pipe spirally wound around the lower part of the vessel body, the two ends of which are connected to the outside via a second inlet and a second outlet.

[0012] In an exemplary embodiment, the volume of the inverted conical structure accounts for 1 / 7 to 1 / 9 of the total volume of the vessel body, and a liquid separation observation window is provided on the side wall of the inverted conical structure.

[0013] In one exemplary embodiment, the stirring assembly includes a stirring shaft and a stirrer. The upper end of the stirring shaft extends upward from the vessel body and is connected to a rotary drive mechanism. The stirrer is fixedly mounted on the stirring shaft. A mounting frame is provided on the top of the vessel body, and the rotary drive mechanism is mounted on the mounting frame.

[0014] In an exemplary embodiment, a sealing element is provided at the connection between the stirring shaft and the vessel body to ensure the sealing of the connection when the stirring shaft is stationary or rotating.

[0015] In one exemplary embodiment, the rotary drive mechanism includes a motor and a reducer, the motor being shaft-connected to the reducer, and the reducer being drively connected to the stirring shaft, thereby outputting the power of the motor to the stirring shaft.

[0016] In one exemplary embodiment, the stirrer includes three sets of impellers arranged sequentially from top to bottom on the stirring shaft.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] By physically separating different areas of the reactor (reaction zone, separation zone, and distillation zone), a distillation and condensation device connected to the reactor is used to replace the dehydration vessel. The water or solvent generated in the reaction is directly removed by distillation, eliminating the need for a separate dehydration device. Through the synergy of multiple feed inlets, stirring components, and temperature control components, the process of multi-stage reaction can be integrated, enabling the sequential completion of processes such as esterification / hydrolysis, neutralization, water washing, and dehydration within the same reactor, avoiding the need for multiple equipment transfers. This successfully integrates the traditional multi-equipment process into a single reactor, compressing it into a "sequential multi-functional operation" of a single device. This reduces energy loss and pollution risks caused by material transfer, improves reaction efficiency, and ultimately achieves the production goals of high efficiency, low consumption, and environmental protection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0020] Figure 1 This is a schematic diagram of the structure of a separate reaction vessel for preparing castor oil derivatives, as disclosed in a specific embodiment of the present invention.

[0021] Figure 2 for Figure 1 A schematic diagram of the front view of the liquid separation observation window;

[0022] in:

[0023] 1. Reactor body; 11. Inverted conical structure; 111. Separation observation window; 112. Mounting plate; 12. Second discharge port; 13. Castor oil inlet; 14. Catalyst inlet; 15. Sulfuric acid inlet; 16. Deionized water inlet; 17. Nitrogen inlet; 18. Top observation window; 19. Maintenance manhole;

[0024] 2. Distillation and condensation unit; 21. Distiller; 22. Heat exchanger; 23. Condenser; 24. Buffer tank; 25. Vacuum system interface; 26. First discharge port;

[0025] 3. Temperature control assembly; 31. Heating mechanism; 311. First inlet; 312. Heat pipe; 313. First outlet; 32. Cooling mechanism; 321. Second inlet; 322. Cooling pipe; 323. Second outlet;

[0026] 4. Stirring assembly; 41. Stirring shaft; 42. Stirrer; 43. Rotary drive mechanism; 431. Motor; 432. Reducer; 44. Fixing frame; 45. Seal. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] The purpose of this invention is to provide a separate reaction vessel for preparing castor oil derivatives, in order to solve the problems existing in the prior art. It integrates the traditional multi-equipment process into a single reaction vessel, reduces energy loss and pollution risks caused by material transfer, improves reaction efficiency, and ultimately achieves the production goals of high efficiency, low consumption, and environmental protection.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Please refer to Figures 1 to 2 This embodiment provides a separation reactor for preparing castor oil derivatives, including a reactor body 1. The top of the reactor body 1 is connected to a distillation and condensation device 2. The distillation and condensation device 2 includes a distiller 21, a heat exchanger 22, a condenser 23, and a buffer tank 24 connected in sequence. The distiller 21 and the heat exchanger 22 are vertically arranged. The bottom of the distiller 21 is connected to the top of the reactor body 1. The heat exchanger 22 is located above the distiller 21. The condenser 23 is inclined downward. The buffer tank 24 is located below the condenser 23. The top of the buffer tank 24 is provided with a vacuum system interface 25, and the bottom of the buffer tank 24 is provided with a first discharge port 26. The upper part of the reactor body 1 has a feed inlet. The reactor body 1 is equipped with a temperature control component 3 and a stirring component 4. The bottom of the reactor body 1 is an inverted conical structure 11 for static stratification. The bottom of the inverted conical structure 11 has a second discharge port 12.

[0031] Specifically, the distillation unit 21 of the distillation and condensation device 2 is preferably a packed distillation unit, the heat exchanger 22 is preferably a shell-and-tube heat exchanger, and the condenser 23 is preferably a shell-and-tube condenser. The packed distillation unit can increase the gas-liquid contact area and is used for the initial separation of volatile substances. The shell-and-tube heat exchanger achieves component condensation through temperature control. The shell-and-tube condenser and the buffer tank 24 are responsible for the final condensation and recovery of useful substances. The vacuum system assists in lowering the boiling point and efficiently dehydrating the substances.

[0032] In this embodiment, a distillation and condensation device 2 connected to the vessel body 1 is used instead of a dehydration vessel. The water or solvent generated in the reaction is removed directly by distillation, without the need for a separate dehydration device.

[0033] The upper part of the vessel body 1 has multiple feed inlets, including castor oil feed inlet 13, catalyst feed inlet 14, sulfuric acid feed inlet 15, deionized water feed inlet 16 and nitrogen inlet 17, which are connected to different raw material tanks respectively.

[0034] Temperature control assembly 3 includes a heating mechanism 31 and a cooling mechanism 32, wherein:

[0035] The heating mechanism 31 includes a heat-conducting pipe 312 spirally wound and embedded in the inner wall of the vessel body 1. The two ends of the heat-conducting pipe 312 are connected to the outside through a first inlet 311 and a first outlet 313. The embedded design in the inner wall ensures uniform reaction temperature and promotes complete reaction.

[0036] The cooling mechanism 32 includes a cooling pipe 322 spirally coiled inside the lower part of the vessel body 1. Both ends of the cooling pipe 322 are connected to the outside through a second inlet 321 and a second outlet 323. After the reaction is completed, the cooling mechanism 32 rapidly cools down the vessel to terminate the side reaction, or controls the temperature during the water washing stage to prevent emulsification and reduce energy consumption.

[0037] The stirring assembly 4 includes a stirring shaft 41 and a stirrer 42. The upper end of the stirring shaft 41 extends upward from the vessel body 1 and is connected to the rotary drive mechanism 43. The stirrer 42 is fixedly mounted on the stirring shaft 41. A fixing frame 44 is provided on the top of the vessel body 1, and the rotary drive mechanism 43 is mounted on the fixing frame 44. The stirrer 42 includes three sets of impellers arranged sequentially from top to bottom on the stirring shaft 41, forming a propeller-type stirrer 42. The rotary drive mechanism 43 includes a motor 431 and a reducer 432. The motor 431 and the reducer 432 are shaft-connected, and the reducer 432 is connected to the stirring shaft 41, transmitting power from the motor 431 to the stirring shaft 41. A sealing element 45 is provided at the connection between the stirring shaft 41 and the vessel body 1 to ensure the sealing of the connection when the stirring shaft 41 is stationary or rotating. By setting the sealing element 45, the sealing performance of the reactor is improved, thereby enabling the dehydration temperature to be reduced under vacuum conditions, which in turn shortens the dehydration time, improves the dehydration efficiency, and prevents the castor oil derivative from darkening in color.

[0038] This embodiment achieves process integration of multi-stage reaction by coordinating multiple feed inlets with the stirring component 4 and the temperature control component 3, enabling the sequential completion of processes such as esterification / hydrolysis, neutralization, water washing, and dehydration within the same reactor body 1, thus avoiding the need for multiple equipment transfers.

[0039] The top of the vessel body 1 is also provided with a top observation window 18 and a maintenance manhole 19, which can be used to monitor the process and reduce the need to start the vessel.

[0040] The volume of the inverted cone-shaped structure 11 accounts for 1 / 7 to 1 / 9 of the total volume of the vessel body 1, preferably 1 / 8, and liquid-liquid stratification is achieved by utilizing density differences. When the mixture after the reaction is allowed to stand, liquids of different densities (such as reaction products and waste acid / water layers) naturally separate and are discharged in stages through the second discharge port 12 at the bottom, replacing the traditional separation tank.

[0041] The inverted conical structure 11 is also provided with a liquid separation observation window 111. The liquid separation observation window 111 is installed on the side wall of the inverted conical structure 11 via a mounting plate 112. Preferably, multiple liquid separation observation windows 111 are symmetrically arranged. The symmetrically distributed liquid separation observation windows 111 can monitor the stratification effect in real time, accurately control the timing of discharge, and avoid the problem of incomplete separation.

[0042] The following is an exemplary description of the use of the separate reaction vessel in this embodiment through a specific production process:

[0043] Step 1. Nitrogen Replacement and Raw Material Addition: Nitrogen is introduced through nitrogen inlet 17 to replace the air in the reactor and prevent oxidation side reactions; 0.01-30.0 kg of alkaline catalysts such as sodium hydroxide, potassium hydroxide, sodium methoxide, potassium methoxide, sodium ethoxide, and potassium ethoxide are added through catalyst feed port 14, followed by 0.1-2 tons of solvent such as anhydrous ethanol or anhydrous methanol. The stirring component 4 is turned on to stir and mix evenly, and the heating mechanism 31 is turned on to heat to 35-50°C. 0.1-10 tons of castor oil are added through castor oil feed port 13.

[0044] The system utilizes nitrogen to provide an inert environment, preventing oxidation side reactions and ensuring reaction safety by avoiding the formation of an explosive gas mixture from solvent evaporation. Multiple feed inlets allow for step-by-step feeding, preventing uncontrolled pre-mixing of materials and ensuring reaction uniformity.

[0045] Step 2. Transesterification reaction and solvent reflux control: Heat to 50-90℃ and carry out transesterification reaction for 3-15 hours under the stirring of stirring component 4. Unreacted ethanol / methanol is refluxed into the vessel body 1 through the distillation unit 21 and heat exchanger 22 of the distillation condensation device 2.

[0046] The packed distillation unit 21 increases the gas-liquid contact area, allowing the low-boiling-point solvent to partially vaporize and rise at 50–90°C. The heat exchanger 22 controls the condensation temperature; for example, by keeping the temperature of the cooling medium in the tubular heat exchanger below the solvent's boiling point, the vaporized solvent condenses into liquid and flows back to the reaction vessel. The aim is to maintain the solvent concentration within the reaction system, promote forward ester exchange, and reduce solvent consumption.

[0047] Step 3. High-temperature distillation to recover unreacted solvent: Heat to 95-120°C and recover the remaining ethanol / methanol through the distillation condenser 2, collecting it from the first discharge port 26 at the bottom of the buffer tank 24.

[0048] In the transesterification reaction stage (50-90℃), the temperature is below the boiling point of ethanol / methanol, and the partially vaporized solvent is refluxed to maintain the concentration of the reaction solution. In the recovery stage (95-120℃), the temperature exceeds the boiling point of the solvent, the solvent is completely vaporized, and the transesterification reaction is completed. The solvent does not need to be refluxed. The temperature of the cooling medium in the shell and tube heat exchanger is controlled to be higher than the boiling point of the solvent, so that the vaporized solvent directly enters the condenser 23 for condensation, and then enters the buffer tank 24 for recovery.

[0049] Furthermore, the vacuum system can be connected to the vacuum system via the vacuum system interface 25 on the top of the buffer tank 24 for auxiliary purposes. The vacuum can be turned on during the high-temperature stage to further reduce the boiling point of the solvent and improve the recovery efficiency.

[0050] Step 4. Vacuum purification: Turn on the vacuum system and evacuate for 1 to 6 hours to remove small amounts of impurities such as volatile small molecules like ethanol and methanol from the castor oil derivative in vessel 1.

[0051] The system is connected to a vacuum system via the vacuum system interface 25 at the top of the buffer tank 24 to reduce the system pressure and promote the volatilization and removal of low-boiling-point impurities (such as residual solvents).

[0052] Step 5. Separate glycerol: Open the nitrogen inlet 17 to break the vacuum inside the vessel 1, open the cooling mechanism 32 to cool the castor oil derivative inside the vessel 1 to 20-50°C, close the stirring component 4, and let the substances inside the vessel 1 stand and separate into layers. Observe the separation of the by-product glycerol and the castor oil derivative through the liquid separation observation window 111 of the inverted conical structure 11. When the separation is complete, slowly release the lower layer of glycerol into the recovery container from the first discharge port 26.

[0053] Step 6. Neutralization and washing: Turn on the stirring assembly 4, add 0.01-5 kg ​​of sulfuric acid into the vessel through the sulfuric acid feed port 15 to adjust the pH value of the castor oil derivative to 7.0, add 1.0-100 kg of deionized distilled water into the reaction vessel through the deionized water feed port 16 for washing to remove soluble salts and other impurities in the castor oil derivative, turn off the stirring assembly 4, and allow the substances in the vessel 1 to stand and separate into layers. Discharge the lower layer of aqueous solution from the first discharge port 26. Repeat this washing operation 1-5 times.

[0054] Step 7. Dehydration and finished product processing: Turn on the heating mechanism 31 to raise the temperature to 70-130°C, turn on the vacuum system, and vacuum the castor oil derivative in the reactor 1 to remove water for 1-6 hours; after the dehydration operation is completed, turn off the heating mechanism 31, turn on the cooling mechanism 32 to cool the castor oil derivative in the reactor 1 to 40-80°C, and then collect and package the produced castor oil derivative through the first discharge port 26.

[0055] When the vacuum system is turned on, the distillation and condensation device 2 works together to remove trace amounts of moisture, preventing high-temperature oxidation from causing the product to darken in color; after dehydration, the cooling mechanism 32 ensures that the castor oil derivative is cooled quickly, preventing the decomposition of heat-sensitive products and ensuring the stability of the finished product.

[0056] This embodiment successfully integrates the traditional multi-equipment process into a single reactor by physically separating different areas (reaction zone, separation zone, and distillation zone) of the reactor body 1 and combining them with staged operation. This reduces energy loss and pollution risks caused by material transfer, improves reaction efficiency, and ultimately achieves the production goals of high efficiency, low consumption, and environmental protection.

[0057] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model, and do not imply or require that the device or element referred to have a specific orientation or construction method, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish the objects of description and should not be construed as limiting importance or order, and the features defined by such terms may explicitly or implicitly include one or more of those features. Unless otherwise stated, "a plurality of" in the description of this utility model refers to two or more.

[0058] The terms "installation," "connection," and "joining" should be interpreted broadly, unless otherwise explicitly defined, to include, but are not limited to, fixed connections, detachable connections, or integrally formed connections; mechanical or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art can understand their meaning based on the specific technical solution. The fixed connections involved in this utility model, unless otherwise stated, include both detachable fixed connections (such as bolt and screw connections) and non-detachable fixed connections (such as riveting and welding), and may also include integral structures achieved through an integral forming process (such as casting) (except where integral forming is clearly impossible).

[0059] Unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes cover states or shapes that are similar to, close to, or adjacent to them.

[0060] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0061] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0062] In the embodiments of this application, the same reference numerals are used to denote the same component or the same part.

[0063] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0064] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0065] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A separating reaction vessel for preparing castor oil derivatives, characterized in that: The apparatus includes a vessel body, the top of which is connected to a distillation and condensation device. The distillation and condensation device includes a distiller, a heat exchanger, a condenser, and a buffer tank connected in sequence. The distiller and heat exchanger are vertically arranged, with the bottom of the distiller connected to the top of the vessel body. The heat exchanger is located above the distiller, and the condenser is inclined downwards. The buffer tank is located below the condenser, with a vacuum system interface at the top and a recycled material discharge port at the bottom. A feed inlet is provided at the top of the vessel body, and a temperature control component and a stirring component are provided inside the vessel body. The bottom of the vessel body is an inverted conical structure for static stratification, with a derivative discharge port at the bottom of the inverted conical structure.

2. The separating reaction vessel for preparing castor oil derivatives according to claim 1, characterized in that: The feed inlets include castor oil feed inlet, catalyst feed inlet, sulfuric acid feed inlet, deionized water feed inlet, and nitrogen inlet.

3. The separating reaction vessel for preparing castor oil derivatives according to claim 1, characterized in that: The temperature control component includes a heating mechanism and a cooling mechanism.

4. The separating reaction vessel for preparing castor oil derivatives according to claim 3, characterized in that: The heating mechanism includes a heat-conducting pipe spirally wound and embedded in the inner wall of the vessel, with both ends of the heat-conducting pipe connected to the outside through a first inlet and a first outlet.

5. The separating reaction vessel for preparing castor oil derivatives according to claim 3, characterized in that: The cooling mechanism includes a cooling pipe spirally wound in the lower part of the vessel body, and the two ends of the cooling pipe are connected to the outside through a second inlet and a second outlet.

6. The separating reaction vessel for preparing castor oil derivatives according to claim 1, characterized in that: The volume of the inverted conical structure accounts for 1 / 7 to 1 / 9 of the total volume of the vessel body, and a liquid separation observation window is provided on the side wall of the inverted conical structure.

7. The separation reactor for preparing castor oil derivatives according to any one of claims 1-6, characterized in that: The stirring assembly includes a stirring shaft and a stirrer. The upper end of the stirring shaft extends upward from the vessel body and is connected to the rotary drive mechanism. The stirrer is fixedly mounted on the stirring shaft. A fixing frame is provided on the top of the vessel body, and the rotary drive mechanism is mounted on the fixing frame.

8. The separating reaction vessel for preparing castor oil derivatives according to claim 7, characterized in that: A sealing element is provided at the connection between the stirring shaft and the vessel body to ensure the sealing of the connection when the stirring shaft is stationary or rotating.

9. The separating reaction vessel for preparing castor oil derivatives according to claim 7, characterized in that: The rotary drive mechanism includes a motor and a reducer. The motor is shaft-connected to the reducer, and the reducer is drive-connected to the stirring shaft, so as to output the power of the motor to the stirring shaft.

10. The separating reaction vessel for preparing castor oil derivatives according to claim 7, characterized in that: The agitator includes three sets of impellers arranged sequentially from top to bottom on the agitator shaft.

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