An apparatus for rhamnolipid lactone formation

Abstract

This utility model relates to a rhamnolipid lactone reaction apparatus, comprising a reaction vessel body. A gear box is fixedly installed inside the reaction vessel body. A first rotating shaft and a second rotating shaft are rotatably connected to the top and bottom surfaces of the gear box, respectively. The first and second rotating shafts extend vertically and are opposite each other. An upper bevel gear and a lower bevel gear are fixedly connected to the lower end of the first rotating shaft and the upper end of the second rotating shaft, respectively. Four third rotating shafts are rotatably connected to the side of the gear box. The four third rotating shafts extend laterally and are evenly distributed circumferentially. A side bevel gear is fixedly connected to one opposite end of each of the four third rotating shafts. The four side bevel gears mesh between the upper and lower bevel gears. A first stirring element is fixedly connected to the outer wall of the first rotating shaft, a second stirring element is fixedly connected to the outer wall of the second rotating shaft, and a material turning element is fixedly connected to the outer wall of the third rotating shaft. This utility model realizes horizontal and vertical stirring and mixing of materials, making the material more thoroughly stirred and improving the overall uniformity of the material.

Description

Technical Field

[0001] This utility model relates to the field of esterification reactor technology, specifically to a rhamnolipid lactone esterification reaction device. Background Technology

[0002] Rhamnolipids are non-toxic, readily biodegradable anionic surfactants that reduce the surface tension of water at the oil-water interface, thereby increasing the wettability of solid surfaces. They have important applications in soil remediation, waste oil degradation, and promoting nutrient absorption in crops. Sucrose esters are an important intermediate in the synthesis of rhamnolipids and can be synthesized through various methods. A common method involves reacting sucrose with an acid catalyst to generate sucrose acid, which is then esterified with a fatty acid solution to obtain rhamnolipids.

[0003] Esterification reactions are typically carried out in an esterification reactor. For example, patent CN221208051U discloses an esterification reactor, including a workbench. A protective shell is fixedly connected to the top of the workbench, and a shell cover is fixedly connected to the top of the protective shell. A mounting plate is fixedly connected to the center of the top of the shell cover, and a drive assembly is fixedly connected to the inner wall of the bottom of the mounting plate. A reaction vessel is fixedly connected to the center of the bottom of the protective shell, and a partition is fixedly connected to the bottom of the shell cover. A gear is fixedly connected to the top outer side of the drive assembly, and a rotating blade is fixedly connected to the bottom outer side of the drive assembly. Rotating rods are rotatably connected to both the left and right sides of the bottom of the partition. This invention achieves stirring of the internal reactants in different directions, which is beneficial for the complete reaction of the esterified products and also saves reaction efficiency, thereby improving work efficiency.

[0004] Although this patent allows the two rotating rods to rotate and stir in different directions, since the two rotating rods extend vertically, the stirring only occurs in the horizontal direction. The mixing effect on the material flow between the upper and lower layers is not obvious, and the material is not mixed sufficiently between the upper and lower layers, resulting in insufficient overall uniformity of the material.

[0005] Moreover, the two rotating rods of this patent have the same stirring speed. After stirring for a period of time, the material will rotate almost synchronously with the stirring blades to form a relatively static stirring, which further affects the full mixing of the raw materials and requires a longer stirring time, thus affecting the stirring efficiency of the raw materials. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a rhamnolipid lactone reaction apparatus, which solves the problems of insufficient mixing of materials in the upper and lower layers, resulting in insufficient overall uniformity of the materials and low stirring efficiency in existing esterification reaction apparatuses.

[0007] This utility model is achieved through the following technical solution: a rhamnolipid lactone reaction device, comprising a reaction vessel body, a gear box fixedly disposed within the reaction vessel body, a first rotating shaft and a second rotating shaft rotatably connected to the top and bottom surfaces of the gear box respectively, the first rotating shaft and the second rotating shaft extending vertically and facing each other, an upper bevel gear and a lower bevel gear fixedly connected to the lower end of the first rotating shaft and the upper end of the second rotating shaft respectively, four third rotating shafts rotatably connected to the side of the gear box, the four third rotating shafts extending laterally and evenly distributed circumferentially, a side bevel gear fixedly connected to one opposite end of each of the four third rotating shafts, the four side bevel gears meshing between the upper bevel gear and the lower bevel gear; the upper end of the first rotating shaft is rotatably connected to the top of the reaction vessel body, a driving mechanism for driving the first rotating shaft to rotate is provided on the top of the reaction vessel body, a first stirring element is fixedly connected to the outer wall of the first rotating shaft, a second stirring element is fixedly connected to the outer wall of the second rotating shaft, and a material turning element is fixedly connected to the outer wall of the third rotating shaft.

[0008] This design uses a fixed gearbox to support the first, second, and third rotating shafts, enabling the meshing of the upper bevel gear, lower bevel gear, and four side bevel gears. Rotation of the first shaft causes the first agitator to horizontally mix the material in the upper part of the shaft. The first shaft, through the upper bevel gear, drives the four side bevel gears to rotate, which in turn rotates the third shaft, causing the material-turning component to vertically turn the material, achieving tumbling and mixing of the upper and lower layers and improving the uniformity of the mixture. The side bevel gears drive the meshing lower bevel gear to rotate, causing the second shaft to rotate, which in turn causes the second agitator to horizontally mix the material in the lower part of the shaft. The first and second agitators mix the materials in the upper and lower parts of the reactor body horizontally, while the tilting device mixes the materials in the upper and lower parts vertically, resulting in more thorough mixing and a more uniform overall mixture within the reactor body.

[0009] As an optimization, the gear transmission ratio between the upper bevel gear and the side bevel gear is 1:2, and the gear transmission ratio between the side bevel gear and the lower bevel gear is 2:1. In this optimized scheme, the different gear transmission ratios of the upper and side bevel gears result in different rotational speeds of the first and third shafts. This causes different stirring speeds in the horizontal direction and different turning speeds in the vertical direction. The different flow velocities of the material prevent near-static stirring, ensuring thorough mixing in both directions and improving stirring efficiency.

[0010] As an optimization, the gearbox is detachably fixed inside the reactor body. This optimized design facilitates disassembly and maintenance.

[0011] As an optimization, four connecting rods are fixed to the side of the gear box. The connecting rods extend laterally, and the end of the connecting rod away from the gear box is connected to the side wall of the reactor body by bolts. In this optimized solution, the gear box is screwed to the reactor body through the connecting rods to achieve detachable and fixed installation. By staggering the connecting rods and the third rotating shaft, the rotation of the flipping part is facilitated.

[0012] As an optimization, the four connecting rods and four third rotating shafts are staggered circumferentially. The flipping component includes several material-pushing plates fixed to the outer wall of the third rotating shafts. These material-pushing plates have a conical structure, with their tips facing the gearbox. The size of the material-pushing plates is smaller than the size of the conical space formed by the third rotating shafts, connecting rods, and the side wall of the reactor body. This optimized solution, through the staggered distribution of the connecting rods and third rotating shafts, creates a conical space between the third rotating shafts, connecting rods, and the side wall of the reactor body. The conical material-pushing plates and the conical space are more compatible, allowing the material-pushing plates to rotate circumferentially through the conical space. This facilitates the rotation of the flipping component.

[0013] As an optimization, multiple material passage holes are provided on the end face of the feeding plate. This optimization allows materials to pass through easily, preventing excessive resistance when the feeding plate rotates.

[0014] As an optimization, the first stirring component includes a plurality of first horizontal stirring rods fixedly connected to the outer wall of the first rotating shaft, and a plurality of first vertical stirring rods fixedly connected to the outer wall of the first horizontal stirring rods, the plurality of first vertical stirring rods being arranged along the length direction of the first horizontal stirring rods. This optimized solution uses the first horizontal stirring rods to stir in the horizontal direction and the first vertical stirring rods to stir in the vertical direction, making the stirring of the first stirring component more uniform.

[0015] As an optimization, the second stirring component includes a plurality of second transverse stirring rods fixedly connected to the outer wall of the second rotating shaft. A plurality of second vertical stirring rods are fixedly connected to the outer wall of each of the second transverse stirring rods, and these second vertical stirring rods are arranged along the length of the second transverse stirring rods. This optimized solution achieves more uniform stirring by using the second transverse stirring rods for horizontal stirring and the second vertical stirring rods for vertical stirring.

[0016] As an optimization, the second stirring component also includes a scraper rod fixedly connected to the outer wall of the second rotating shaft. The shape of the scraper rod is adapted to the shape of the inner bottom of the reactor vessel, and the scraper rod fits snugly against the inner bottom of the reactor vessel. This optimized solution reduces material residue on the inner bottom of the reactor vessel by scraping it with the scraper rod, making cleaning easier.

[0017] As an optimization, the scraper rod is located below the second transverse stirring rod, and a vertical extension rod is fixedly connected to the end of the scraper rod away from the second rotating shaft. The extension rod is attached to the side wall of the reactor body and fixedly connected to the second transverse stirring rod. This optimized solution uses the extension rod to fix the scraper rod and the second transverse stirring rod into one unit, thereby improving the structural strength of the second stirring component.

[0018] The beneficial effects of this invention are as follows: The rotation of the first rotating shaft causes the first stirring component to stir and mix the upper material in a horizontal direction. The first rotating shaft drives the rotation of four side bevel gears via an upper bevel gear, which in turn causes the rotation of the third rotating shaft, causing the material-turning component to turn the material vertically, achieving tumbling and mixing of the upper and lower layers of material. The side bevel gears drive the meshing lower bevel gears to rotate, causing the second rotating shaft to rotate, which in turn causes the second stirring component to stir and mix the lower material in a horizontal direction. A single drive mechanism can drive the first, second, and third rotating shafts to rotate synchronously, saving energy. The upper and lower bevel gears rotate in opposite directions through the meshing of the side bevel gears, which in turn makes the mixing directions of the first and second mixing components opposite, thereby further improving the uniformity of mixing of the upper and lower materials. The first and second agitators mix the materials in the upper and lower parts of the reactor body horizontally, while the tipping device mixes the materials in the upper and lower parts vertically, making the mixture in the reactor body more thorough and the overall mixture more uniform. The gear transmission ratios of the upper bevel gear and the side bevel gear are different, so the rotation speeds of the first shaft and the third shaft are different. This results in different stirring speeds and turning speeds of the material in the horizontal direction and in the vertical direction. The different flow speeds of the material can avoid the phenomenon of relatively static stirring, thereby ensuring that the material is fully mixed in the vertical direction and improving the stirring efficiency. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the present invention; Figure 2 for Figure 1 Enlarged view of part A; Figure 3 This is a top sectional view of the present invention; Figure 4 for Figure 2 Enlarged view of part B; As shown in the figure: 1. Reactor body; 2. Inlet; 3. Thermometer; 4. Outlet; 5. Switch valve; 6. Circulation coil; 7. Gear box; 71. Bearing sleeve; 8. First rotating shaft; 9. Third rotating shaft; 10. Second rotating shaft; 11. First stirring component; 111. First horizontal stirring rod; 112. First vertical stirring rod; 12. Second stirring component; 121. Second horizontal stirring rod; 122. Second vertical stirring rod; 123. Scraper rod; 124. Extension rod; 13. Material turning component; 131. Material pushing plate; 132. Material passage hole; 14. Connecting rod; 15. Conical space; 16. Drive motor; 17. Upper bevel gear; 18. Lower bevel gear; 19. Side bevel gear. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0021] like Figures 1-4 As shown, a rhamnolipid lactone reaction apparatus includes a reaction vessel 1. In this embodiment, the top of the reaction vessel 1 is provided with a feed inlet 2 and a thermometer 3. The bottom of the reaction vessel 1 is provided with a discharge outlet 4, and a switch valve 5 is installed on the discharge outlet 4 to facilitate the control of material discharge. A circulation coil 6 is fixedly connected to the jacket of the reaction vessel 1, and two ports of the circulation coil 6 extend to the outside of the reaction vessel 1. The two ports of the circulation coil 6 can be used to connect to a hot water source to heat the material inside the reaction vessel; or they can be used to connect to a cold water source to cool the material inside the reaction vessel, depending on the actual usage requirements. This is the existing technology of the reaction vessel 1, and will not be described in detail here.

[0022] The reaction vessel body 1 is equipped with a gear box 7. In this embodiment, the gear box 7 is detachably fixed inside the reaction vessel body 1 for easy disassembly and maintenance.

[0023] Specifically, in this embodiment, the gear box 7 is a hollow cube structure, and all corners of the gear box 7 are rounded.

[0024] The gearbox 7 is located at the center of the inner cavity of the reactor body 1. Four connecting rods 14 are fixedly connected to the side of the gearbox 7. The connecting rods 14 extend laterally, and the end of the connecting rod 14 away from the gearbox 7 is bolted to the side wall of the reactor body 1. In this embodiment, the end of the connecting rod 14 is fixed to the corner of the gearbox 7. The gearbox 7 is bolted to the side wall of the reactor body 1 through the four connecting rods 14, achieving detachable and fixed installation, which is more secure and stable after fixing.

[0025] The top and bottom surfaces of the gearbox 7 are rotatably connected to a first rotating shaft 8 and a second rotating shaft 10, respectively. The first rotating shaft 8 and the second rotating shaft 10 extend vertically and are opposite each other. Four third rotating shafts 9 are rotatably connected to the sides of the gearbox 7. The four third rotating shafts 9 extend laterally and are evenly distributed circumferentially. An upper bevel gear 17 and a lower bevel gear 18 are fixedly connected to the lower end of the first rotating shaft 8 and the upper end of the second rotating shaft 10, respectively. A side bevel gear 19 is fixedly connected to one opposite end of each of the four third rotating shafts 9. The four side bevel gears 19 mesh between the upper bevel gear 17 and the lower bevel gear 18.

[0026] In this embodiment, bearing sleeves 71 are fixedly connected to the top surface, bottom surface, and four sides (front, rear, left, and right) of the gear box 7. The bearing sleeves 71 penetrate the end face of the gear box 7, thereby connecting the inside and outside of the gear box. The upper bevel gear 17, the four side bevel gears 19, and the lower bevel gear 18 are all located inside the gear box 7. The first rotating shaft 8, the second rotating shaft 10, and the four third rotating shafts 9 all pass through the bearing sleeves 71 and are fixedly connected to their respective bevel gears. The first rotating shaft 8, the second rotating shaft 10, and the four third rotating shafts 9 are rotatably connected to the gear box 7 through the bearing sleeves 71, and the first rotating shaft 8, the second rotating shaft 10, the third rotating shaft 9, and the bearing sleeves 71 are all sealed to prevent material from entering the gear box 7.

[0027] The first rotating shaft 8 drives the four side bevel gears 19 to rotate via the upper bevel gear 17, thereby causing the third rotating shaft 9 to rotate. The side bevel gears 19, in turn, drive the meshing lower bevel gear 18 to rotate, causing the second rotating shaft 10 to rotate. The meshing of the upper and lower bevel gears, through the side bevel gears, causes the upper bevel gear 17 and the lower bevel gear 18 to rotate in opposite directions, resulting in the first stirring element 11 and the second stirring element 12 stirring in opposite directions, which can further improve the uniformity of mixing of the upper and lower materials.

[0028] In this embodiment, the gear transmission ratio between the upper bevel gear 17 and the side bevel gear 19 is 1:2, and the gear transmission ratio between the side bevel gear 19 and the lower bevel gear 18 is 2:1. Because the gear transmission ratios of the upper and lower bevel gears are different from those of the side bevel gears, the rotational speeds of the first rotating shaft 8, the second rotating shaft 10, and the third rotating shaft 9 are different. This results in different stirring speeds in the horizontal direction and different turning speeds in the vertical direction. The different flow rates of the materials prevent near-static stirring, ensuring thorough mixing in both directions and improving stirring efficiency.

[0029] The upper end of the first rotating shaft 8 is rotatably connected to the top of the reactor body 1, and the top of the reactor body 1 is provided with a drive mechanism to drive the first rotating shaft 8 to rotate. A first stirring element 11 is fixedly connected to the outer wall of the first rotating shaft 8, a second stirring element 12 is fixedly connected to the outer wall of the second rotating shaft 10, and a material turning element 13 is fixedly connected to the outer wall of the third rotating shaft 9.

[0030] The driving mechanism described in this embodiment is a drive motor 16 fixedly connected to the top of the reactor body 1. The output end of the drive motor 16 is fixedly connected to the upper end of the first rotating shaft 8. The drive motor drives the first rotating shaft to rotate, thereby causing the four third rotating shafts and the second rotating shaft to rotate synchronously, saving energy.

[0031] Specifically, the first stirring component 11 includes a plurality of first horizontal stirring rods 111 fixedly connected to the outer wall of the first rotating shaft 8. A plurality of first vertical stirring rods 112 are fixedly connected to the outer wall of each of the first horizontal stirring rods 111, and the plurality of first vertical stirring rods 112 are arranged along the length of the first horizontal stirring rods 111. In this embodiment, two first horizontal stirring rods 111 are symmetrically fixed to the outer wall of the first rotating shaft 8, and three first vertical stirring rods 112 are arranged axially on each of the first horizontal stirring rods 111. The first horizontal stirring rods stir the material horizontally, and the first vertical stirring rods stir it vertically, making the stirring component more uniform in its mixing of materials.

[0032] Specifically, the second stirring component 12 includes a plurality of second horizontal stirring rods 121 fixedly connected to the outer wall of the second rotating shaft 10. A plurality of second vertical stirring rods 122 are fixedly connected to the outer wall of each of the second horizontal stirring rods 121, and the plurality of second vertical stirring rods 122 are arranged along the length of the second horizontal stirring rods 121. In this embodiment, two second horizontal stirring rods 121 are symmetrically fixed to the outer wall of the second rotating shaft 10, and each second horizontal stirring rod 121 has three second vertical stirring rods 122 arranged axially. The second horizontal stirring rods stir the material horizontally, and the second vertical stirring rods stir it vertically, making the material more evenly stirred by the second stirring component.

[0033] Preferably, the second stirring element 12 further includes a scraper rod 123 fixedly connected to the outer wall of the second rotating shaft 10. The shape of the scraper rod 123 is adapted to the shape of the inner bottom of the reactor body 1, and the scraper rod 123 is in contact with the inner bottom of the reactor body 1. The scraper rod 123 is located below the second transverse stirring rod 121, and a vertical extension rod 124 is fixedly connected to one end of the scraper rod 123 away from the second rotating shaft 10. The extension rod 124 is in contact with the side wall of the reactor body 1 and fixedly connected to the second transverse stirring rod 121. In this embodiment, two scraper rods 123 are symmetrically fixedly connected to the outer wall of the second rotating shaft 10. Since the bottom surface of the reactor body 1 in this embodiment is an arc-shaped surface, the scraper rod 123 is an arc-shaped rod. When the second rotating shaft 10 rotates, the scraper rod 123 scrapes the inner bottom of the reactor body 1, which facilitates the cleaning of residual materials on the inner bottom of the reactor body 1. The scraper rod 123 and the second transverse stirring rod 121 are fixed together by the extension rod 124, thereby improving the structural strength of the second stirring component 12.

[0034] Specifically, the four connecting rods 14 and the four third rotating shafts 9 are staggered along the circumference. Because the four connecting rods and the four third rotating shafts are staggered and evenly distributed, a conical space 15 is formed between adjacent third rotating shafts 9 and connecting rods 14 and between them and the side wall of the reactor body 1.

[0035] Specifically, the material turning component 13 includes several material turning plates 131 fixedly connected to the outer wall of the third rotating shaft 9. The material turning plates 131 have a conical structure, with the tip of the conical material turning plate 131 facing the gear box 7. The size of the material turning plate 131 is smaller than the size of the conical space 15 formed by the third rotating shaft, the connecting rod, and the side wall of the reactor body.

[0036] Since each third rotating shaft 9 and two connecting rods 14 form two conical spaces 15, in this embodiment, two material-pulling plates 131 are symmetrically fixed on each third rotating shaft 9, and the two material-pulling plates 131 are located in the two conical spaces 15 respectively. The rotation of the third rotating shaft 9 drives the material-pulling plates 131 to rotate circumferentially through the conical spaces 15, thereby realizing the mixing of the upper and lower layers of materials.

[0037] Preferably, the end face of the feeding plate 131 is provided with a plurality of material passage holes 132, so that some material can pass through the material passage holes when the feeding plate rotates, thereby avoiding excessive resistance when the feeding plate rotates.

[0038] Working principle: The drive motor 16 drives the first rotating shaft 8 to rotate, causing the first stirring component 11 to stir and mix the upper material in the horizontal direction. The first rotating shaft 8 drives the rotation of four side bevel gears 19 through the upper bevel gear 17, thereby causing the rotation of the third rotating shaft 9. This causes the material turning component 13 to rotate circumferentially in the vertical direction, turning the material and achieving mixing of the upper and lower layers of material, thus improving the uniformity of the mixing. The side bevel gears 19 drive the meshing lower bevel gear 18 to rotate, causing the second rotating shaft 10 to rotate, which in turn causes the second stirring component 12 to stir and mix the lower material in the horizontal direction. The first stirring element 11 and the second stirring element 12 mix the materials in the upper and lower parts of the reactor body 1 in the horizontal direction, while the turning element 13 turns the materials in the upper and lower parts in the vertical direction to mix them, so that the materials in the reactor body 1 are mixed more thoroughly and the overall mixing is more uniform.

[0039] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A rhamnolipid lactonization reaction device comprising a reaction kettle body (1), characterized in that: The reaction vessel body (1) is equipped with a gear box (7). The top and bottom surfaces of the gear box (7) are rotatably connected to a first rotating shaft (8) and a second rotating shaft (10). The first rotating shaft (8) and the second rotating shaft (10) extend vertically and are opposite each other. The lower end of the first rotating shaft (8) and the upper end of the second rotating shaft (10) are respectively fixed with an upper bevel gear (17) and a lower bevel gear (18). The side of the gear box (7) is rotatably connected to four third rotating shafts (9). The four third rotating shafts (9) extend laterally and are evenly distributed along the circumference. The opposite ends of the four third rotating shafts (9) are all fixed with side bevel gears (19). The four side bevel gears (19) are all meshed between the upper bevel gear (17) and the lower bevel gear (18). The upper end of the first rotating shaft (8) is rotatably connected to the top of the reactor body (1). The top of the reactor body is provided with a driving mechanism to drive the first rotating shaft (8) to rotate. A first stirring element (11) is fixedly connected to the outer wall of the first rotating shaft (8), a second stirring element (12) is fixedly connected to the outer wall of the second rotating shaft (10), and a material turning element (13) is fixedly connected to the outer wall of the third rotating shaft (9). The gear transmission ratio between the upper bevel gear (17) and the side bevel gear (19) is 1:2, and the gear transmission ratio between the side bevel gear (19) and the lower bevel gear (18) is 2:

1.

2. The rhamnolipid lactonization reaction apparatus according to claim 1, characterized by: The gearbox (7) is detachably fixed inside the reactor body (1).

3. The rhamnolipid lactonization reaction apparatus according to claim 2, characterized by: Four connecting rods (14) are fixed to the side of the gear box (7). The connecting rods extend laterally, and the end of the connecting rod (14) away from the gear box (7) is connected to the side wall of the reactor body (1) by bolts.

4. The rhamnolipid lactonization reaction apparatus according to claim 3, characterized by: The four connecting rods (14) and the four third rotating shafts (9) are staggered in the circumferential direction. The turning component (13) includes several material-pushing plates (131) fixed to the outer wall of the third rotating shaft (9). The material-pushing plates are conical in shape, with the tips of the conical material-pushing plates (131) facing the gear box (7). The size of the material-pushing plates (131) is smaller than the size of the conical space (15) formed by the third rotating shaft, the connecting rods and the side wall of the reactor body.

5. The rhamnolipid lactonization reaction apparatus according to claim 4, characterized by: The end face of the feeding plate (131) is provided with a plurality of feeding holes (132).

6. The rhamnolipid lactonization reaction device of claim 1, wherein: The first stirring component (11) includes a plurality of first transverse stirring rods (111) fixedly connected to the outer wall of the first rotating shaft (8). A plurality of first vertical stirring rods (112) are fixedly connected to the outer wall of the first transverse stirring rods. The plurality of first vertical stirring rods are arranged along the length direction of the first transverse stirring rods.

7. The rhamnolipid lactonization reaction apparatus according to claim 1, characterized by: The second stirring component (12) includes a plurality of second transverse stirring rods (121) fixedly connected to the outer wall of the second rotating shaft (10). A plurality of second vertical stirring rods (122) are fixedly connected to the outer wall of the second transverse stirring rods. The plurality of second vertical stirring rods are arranged along the length direction of the second transverse stirring rods.

8. The rhamnolipid lactonization reaction apparatus according to claim 7, characterized by: The second stirring component (12) also includes a scraper (123) fixed to the outer wall of the second rotating shaft (10). The shape of the scraper is adapted to the shape of the inner bottom of the reactor body (1), and the scraper (123) fits against the inner bottom of the reactor body (1).

9. The rhamnolipid lactonization reaction apparatus according to claim 8, characterized by: The scraper rod (123) is located below the second transverse stirring rod (121). A vertical extension rod (124) is fixedly connected to one end of the scraper rod (123) away from the second rotating shaft (10). The extension rod (124) is fixedly connected to the second transverse stirring rod (121).

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