Multi-layer group rotary sucrose-6-ester continuous production equipment and technological process

Abstract

The invention relates to the field of sucrose-6-ester production, in particular to multi-layer group rotary sucrose-6-ester continuous production equipment and a technological process. Comprising a shell, and a first liquid inlet and a second liquid inlet are formed in the top of the shell; a condensate pipe, a condensate inlet and a condensate outlet are arranged on the periphery of the shell; by modifying molecular distillation equipment, integration of all reaction steps in the preparation process of the sucrose-6-ester is successfully achieved, the whole production process including all reaction stages and the connection time of upstream and downstream procedures is remarkably shortened through the improvement, and the production efficiency is greatly improved; according to the invention, through cooperation of the scraping plate and the heating plate, both sides of the heating plate are utilized, collection is carried out immediately after reaction and distillation are completed, and the collected material can just fall into a collection layer below.

Description

Technical Field

[0001] The present invention relates to the field of sucrose-6-ester production, and particularly to a segmented rotary continuous production device and process flow for sucrose-6-ester. Background Art

[0002] Sucralose, commonly known as sucrosyl, is a high-potency artificial sweetener with a sweetness about 600 times that of sucrose (400 - 800 times). Sucralose has no calories, high sweetness, pure sweetness, high safety, etc., and is one of the most ideal sweeteners at present. Sucrose-6-ester is a very important intermediate reactant in the production of sucralose, and there are multiple synthesis routes. Among them, organotin-catalyzed synthesis is a relatively mature one. The existing relatively mature method for organotin-catalyzed synthesis of sucrose-6-ester is as follows: (a) Sucrose, a polar aprotic solvent, and an organotin acylating promoter are stirred and mixed and heated. The organotin undergoes a tinization reaction with sucrose in the polar aprotic solvent (DMF) solution of sucrose: sucrose + organotin → organotin sucrose complex + water, to obtain a first reaction mixture; (b) Water is removed from the first reaction mixture to obtain a water-free second reaction mixture; (c) Carboxylic anhydride is added to the second reaction mixture, and then it is cooled and stirred to react to form sucrose-6-ester.

[0003] However, the existing production process of sucrose-6-ester is complex, with low production efficiency and high cost. With the increasing demand for sucralose, the existing production process and equipment for preparing sucrose-6-ester can no longer meet the requirements. Summary of the Invention

[0004] Therefore, the present invention is made in view of the above problems. The purpose of the present invention is to, through the transformation of the molecular distillation device, enable all reaction processes to be completed at one time in the device, and be able to shorten the entire production process of sucrose-6-ester, the time of each process, etc., and improve the production efficiency to solve the problems of multiple existing production technology processes and low production efficiency. The present invention achieves the above purpose through the following technical solutions:

[0005] A multi-layer group rotary continuous production device for sucrose-6-ester, comprising a housing. A first liquid inlet and a second liquid inlet are arranged at the top of the housing. Condensing water pipes, a condensing liquid inlet and a condensing liquid outlet are arranged around the housing. A first mixing plate is arranged inside the housing below the first liquid inlet and the second liquid inlet. A transfer box is arranged below the first mixing plate. A first reaction layer is arranged below the transfer box. The first reaction layer comprises a heating plate. The heating plate is provided with multiple layers and four layers are formed by being spaced apart from each other. The heating plate is fixedly connected with the housing. Condensing plates are arranged on both the upper and lower sides of each layer of the heating plate. A scraping component and a scraping-off plate are respectively arranged in the upper and lower gaps between each layer of the heating plate and the condensing plate. A three-dimensional column is arranged through the middle of the heating plate and the condensing plate. The upper end of the three-dimensional column penetrates through the transfer box and is fixedly connected with the first mixing plate. The inner end of the scraping-off plate is fixedly connected with the three-dimensional column. The inner end of the scraping component is hinged to the heating plate and is driven by the three-dimensional column to swing relative to the heating plate. A blanking port is arranged on one side of the heating plate. The side of the heating plate away from the blanking port at the top is connected to the bottom of the transfer box through a transfer pipe. The scraping component comprises a chute rod. The lower end of the chute rod matches the chute at the outer edge of the top of the heating plate. A main rod is slidably sleeved inside the inner end of the chute rod, and the inner end of the main rod is hinged to the heating plate. A sliding sleeve is slidably connected to the outside of the main rod, and a scraper is fixedly connected below the sliding sleeve. The sliding sleeve is rotationally connected with a rotating part through a connecting rod. An expansion part is movably arranged in the middle at the top of the rotating part. The upper end of the expansion part is rotationally connected with the condensing plate. The outside of the expansion part is connected to the three-dimensional column through a transmission belt. A collection layer is arranged below the first reaction layer. The collection layer comprises a condensing water collection tank. The middle of the inside of the condensing water collection tank is fixedly connected with the lower end of the three-dimensional column. The condensing water collection tank is communicated with the condensing water pipe. A heavy molecule collection tank is arranged outside the condensing water collection tank. A second liquid spraying port is arranged at the bottom of the heavy molecule collection tank and extends into a second reaction layer. The second reaction layer comprises a second reactant material bin. A third liquid spraying port is arranged on the second reactant material bin close to the second liquid spraying port. A second reaction feeding port two is arranged at the bottom of the second reactant material bin. A second mixing plate is arranged below the second reaction feeding port two. A discharging port is arranged at the bottom of the second mixing plate.

[0006] Preferably, a first liquid spraying port is arranged below the first liquid inlet and the second liquid inlet; the first liquid spraying port has a fine pore structure.

[0007] Preferably, the chute comprises an inner chute and an outer chute; an anti-backsliding step is arranged at the connection of the inner chute and the outer chute; the depth of the outer chute gradually becomes shallower in the clockwise direction.

[0008] Preferably, the rotating part comprises a first gear, and a second gear is meshed and connected to the outside of the first gear; a toothed ring is meshed and connected to the outside of the second gear; the second gear is rotationally connected with the connecting rod on the sliding sleeve.

[0009] Preferably, a keyway is provided on the outer side of the telescopic part; a sleeve is slidably connected to the outside of the keyway; the sleeve is fixedly connected to the first gear.

[0010] Preferably, the outer edges of the heating plate and the condensation plate are fixedly connected to the inside of the housing; the condensation plate is inclined outward to form a condensation circuit with the condensation liquid inlet and the condensation liquid outlet.

[0011] Preferably, the process flow of a multi-layer group rotary continuous sucrose-ester production device includes the following steps:

[0012] S1: Two materials for the first reaction enter the first mixing tray through the first liquid inlet and the second liquid inlet respectively. The two different materials are mixed with each other at the liquid spraying port and then fall into the first mixing tray together; start the control motor to rotate the three-dimensional column to drive the first mixing tray to operate; re-mix and stir according to the characteristics of the bowl-shaped structure of the first mixing tray.

[0013] S2: The stirred materials are transported to each layer of heating plate through the transfer pipe under the transfer box; enter the top of the heating plate for preliminary preheating and light molecule separation; the telescopic part rotates driven by the rotation of the three-dimensional column driving the transmission belt; thus the first gear inside the rotating part rotates; then the second gear moves around the first gear; the connecting rod is driven by the revolution of the first gear to push and pull the sliding sleeve back and forth, so that the sliding sleeve reciprocates relative to the main rod; thus the scraper reciprocates relative to the heating plate; at the same time, the chute rod arranged at the outer end of the main rod cooperates with the chute; when the stirred materials are injected into the top of the heating plate; the chute rod cooperates with the inner chute, and driven by the three-dimensional column, the scraper scrapes the film of the materials counterclockwise; thus realizing the first film scraping of the materials, and the light molecules inside the materials being scraped are separated for the first time; then the materials being scraped fall from the material discharging port on the heating plate; reach the bottom; at this time, the scraping plate reversely scrapes the film of the materials being discharged driven by the three-dimensional column, so as to separate the light molecules for the second time; finally, the materials separated by the second film scraping directly fall into the heavy molecule collection tank from the interval between each heating plate; the light molecules separated twice contact the upper and lower condensation plates to form a liquid and fall along the three-dimensional column into the condensed water collection tank.

[0014] S3: When the scraper moves to one side of the material discharging port after the first film scraping of the materials; due to the anti-backsliding step arranged at the connecting part of the inner chute and the outer chute; so the chute rod drops from the end of the inner chute to the bottom of the anti-backsliding step; the chute rod slides clockwise under the action of the rotating part; since the depth of the outer chute gradually becomes shallower in the clockwise direction; in this way, the chute rod raises the scraper under the action of the outer chute to avoid interfering with the materials that have been scraped; then the scraper moves to the initial position of the feeding point to prepare for the next working cycle.

[0015] S4: The water entering the condensate collection tank flows from the outside of the condensate pipe to the outside of the housing; the material entering the heavy molecule collection tank flows into mixing tray two after converging and reacting with the secondary injection of carboxylic anhydride stored inside the second reactant bin; the two materials are mixed and enter mixing tray two for heating reaction, and then the final reactant is discharged through the discharge port, thereby realizing the preparation of sucrose-6-ester.

[0016] Advantages of the present invention:

[0017] 1. By reforming the molecular distillation equipment, the present invention has successfully achieved the integration of all reaction steps in the preparation process of sucrose-6-ester. This improvement significantly shortens the entire production process, including the connection time of each reaction stage and upstream and downstream processes, and greatly improves the production efficiency.

[0018] 2. Through the cooperation of the scraper and the heating plate, both sides of the heating plate are utilized, and collection is immediately carried out after the reaction and distillation are completed, and the collected material can just fall into the lower collection layer.

[0019] 3. Through the cooperation of the reciprocating motion of the scraper and the scraping plate, during the two distillation processes, the moisture in the reaction material is completely distilled, increasing the effect of subsequent experiments. Description of the drawings

[0020] Figure 1 It is a front view schematic diagram of the present invention.

[0021] Figure 2 It is an internal structure schematic diagram of the present invention.

[0022] Figure 3 It is a schematic diagram of the first reaction layer of the present invention.

[0023] Figure 4 It is a top view of the heating plate of the present invention.

[0024] Figure 5 It is Figure 4 The enlarged structure diagram at position A in

[0025] Figure 6 It is a schematic diagram of the rotating part structure of the present invention.

[0026] Figure 7 It is a schematic diagram of the scraper assembly structure of the present invention.

[0027] Figure 8 It is a schematic diagram of the telescopic part structure of the present invention.

[0028] Figure 9 It is a schematic diagram of the condensate collection tank structure of the present invention.

[0029] Figure 10 It is a schematic diagram of the collection layer structure of the present invention.

[0030] Figure 11 This is a schematic diagram of the structure of the second reaction layer of the present invention. Description of the drawings:

[0032] 1. Housing; 11. First liquid inlet; 12. Condensate inlet; 13. Condensate pipe; 14. First liquid spraying port; 15. First mixing plate; 16. Transfer box; 18. Condensate outlet; 19. Second liquid inlet; 2. First reaction layer; 21. Heating plate; 22. Condensing plate; 23. Scraper assembly; 231. Slide groove rod; 233. Slide sleeve; 234. Rotating part; 2341. Ring gear; 2342. First gear; 2343. Second gear; 235. Telescopic part; 2351. Keyway; 2352. Sleeve; 236. Transmission belt; 238. Main rod; 239. Scraper; 24. Transfer pipe; 26. Stereo column; 27. Scraping plate; 28. Slide groove; 281. Anti-backsliding step; 29. Discharge port; 3. Collection layer; 31. Condensate collection tank; 32. Heavy molecule collection tank; 33. Second liquid spraying port; 4. Second reaction layer; 41. Second reactant material bin; 42. Third liquid spraying port; 43. Second reaction feed inlet two; 44. Second mixing plate; 45. Discharge opening. Detailed implementation manners

[0033] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various different forms. Therefore, the present invention is not limited to the embodiments described below. Additionally, in order to describe the present invention more clearly, components not connected to the invention will be omitted from the drawings;

[0034] As Figure 1 , Figure 2 shown, a multi-layer group rotary continuous production device for sucrose-6-ester includes a housing 1. A first liquid inlet 11 and a second liquid inlet 19 are provided at the top of the housing 1 for materials to enter the tank body; condensate pipes 13, a condensate inlet 12 and a condensate outlet 18 are provided around the housing 1; a first liquid spraying port 14 is provided below the first liquid inlet 11 and the second liquid inlet 19; the first liquid spraying port 14 has a fine pore structure;

[0035] Inside the housing 1, a first mixing plate 15 is provided below the first liquid inlet 11 and the second liquid inlet 19; a transfer box 16 is provided below the first mixing plate 15; the first mixing plate 15 is used to receive the mixed liquid falling from above. In the first mixing plate 15, the mixed liquid forms a vortex due to the relationship of potential energy, and is further mixed and stirred to make the mixed liquid more thoroughly mixed;

[0036] As Figure 3As shown, a first reaction layer 2 is provided below the transfer box 16; the first reaction layer 2 includes a heating plate 21; the heating plate 21 is provided with multiple layers and four are spaced apart from each other to form a layer; the heating plate 21 is fixedly connected to the housing 1; condensation plates 22 are provided on both the upper and lower sides of each layer of the heating plate 21; a scraper assembly 23 and a scraping plate 27 are respectively provided in the upper and lower gaps between each layer of the heating plate 21 and the condensation plate 22; a three-dimensional column 26 is penetrated through the middle of the heating plate 21 and the condensation plate 22; the upper end of the three-dimensional column 26 penetrates through the transfer box 16 and is fixedly connected to the first mixing plate 15; the inner end of the scraping plate 27 is fixedly connected to the three-dimensional column 26; the inner end of the scraper assembly 23 is hinged to the heating plate 21 and is driven by the three-dimensional column 26 to swing relative to the heating plate 21;

[0037] As Figure 1 shown in FIG. 3, a material discharge port 29 is provided on one side of the heating plate 21; the top of the heating plate 21 on the side away from the material discharge port 29 is connected to the bottom of the transfer box 16 through a transfer pipe 24;

[0038] As Figure 6 and 7 shown, the scraper assembly 23 includes a chute rod 231; the lower end of the chute rod 231 is matched with the chute 28 on the outer edge of the top of the heating plate 21; a main rod 238 is slidably sleeved at the inner end of the chute rod 231, and the inner end of the main rod 238 is hinged to the heating plate 21; a sliding sleeve 233 is slidably connected to the outside of the main rod 238, and a scraper 239 is fixedly connected below; the sliding sleeve 233 is rotationally connected to a rotating part 234 through a connecting rod; a telescopic part 235 is movably provided in the middle of the top of the rotating part 234; the upper end of the telescopic part 235 is rotationally connected to the condensation plate 22; the outside of the telescopic part 235 is connected to the three-dimensional column 26 through a transmission belt 236;

[0039] As Figure 2 and 9 shown, a collection layer 3 is provided below the first reaction layer 2; the collection layer 3 includes a condensate collection tank 31, and the middle inside the condensate collection tank 31 is fixedly connected to the lower end of the three-dimensional column 26; the condensate collection tank 31 is communicated with a condensate water pipe 13; a heavy molecule collection tank 32 is provided outside the condensate collection tank 31; a liquid spraying port two 33 is opened at the bottom of the heavy molecule collection tank 32 and extends into the second reaction layer 4;

[0040] As Figure 2 and 11 shown, the second reaction layer 4 includes a second reactant material bin 41, and a liquid spraying port three 42 is opened in the second reactant material bin 41 close to the liquid spraying port two 33; a second reaction feed port two 43 is provided at the bottom of the second reactant material bin 41; a second mixing plate 44 is provided below the second reaction feed port two 43; a discharge port 45 is provided at the bottom of the second mixing plate 44;

[0041] As an implementable manner, the liquid spraying port 14 is processed into a fine pore structure to increase the contact area of the two materials and enhance the degree of fusion;

[0042] As an implementable manner, as Figure 4 and 5 shown, the sliding groove 28 includes an inner sliding groove and an outer sliding groove; an anti-backsliding step 281 is provided at the junction of the sliding groove and the outer sliding groove; the depth of the outer sliding groove gradually becomes shallower in the clockwise direction;

[0043] As an implementable manner, as Figure 6 and Figure 7 shown, the rotating part 234 includes a first gear 2342, and a second gear 2343 is meshed and connected to the outside of the first gear 2342; a gear ring 2341 is meshed and connected to the outside of the second gear 2343; the second gear 2343 is rotationally connected to the connecting rod on the sliding sleeve 233;

[0044] As an implementable manner, as Figure 8 shown, a key groove 2351 is formed on the outside of the telescopic part 235; a sleeve 2352 is slidably connected to the outside of the key groove 2351; the sleeve 2352 is fixedly connected to the first gear 2342;

[0045] As an implementable manner, as Figure 1 shown, the outer edges of the heating plate 21 and the condensation plate 22 are fixedly connected to the inside of the housing 1; the condensation plate 22 is inclined outward to form a condensation circuit with the condensation liquid inlet 12 and the condensation liquid outlet 18.

[0046] The working principle of the present invention:

[0047] S1: The two materials for the first reaction respectively enter the first mixing disk 15 through the first liquid inlet 11 and the second liquid inlet 19, and the two different materials are mixed with each other at the liquid spraying port 14 and then fall into the first mixing disk 15 together; start the control motor to rotate the three-dimensional column 26 to drive the first mixing disk 15 to operate; perform secondary mixing and stirring through the characteristics of the first mixing disk 15 in the shape of a altar;

[0048] S2: The stirred material is conveyed to each heating plate 21 through the transfer pipe 24 under the transfer box 16; it enters the top of the heating plate 21 for preliminary preheating and light molecule separation; the rotating three-dimensional column 26 drives the conveyor belt 236 to rotate the telescopic part 235; thus, the first gear 2342 inside the rotating part 234 rotates; subsequently, the second gear 2343 moves around the first gear 2342; the revolution of the first gear 2342 drives the connecting rod to push and pull the sliding sleeve 233 back and forth, causing the sliding sleeve 233 to reciprocate relative to the main rod 238; thus, the scraper 239 makes a reciprocating swinging motion relative to the heating plate 21; at the same time, the chute rod 231 arranged at the outer end of the main rod 238 cooperates with the chute 28; when the stirred material is injected into the top of the heating plate 21; the chute rod 231 cooperates with the inner chute, and under the drive of the three-dimensional column 26, the scraper 239 performs counterclockwise film scraping on the material; thus, the first film scraping of the material is realized, and the light molecules inside the material being film scraped are separated for the first time; subsequently, the material being film scraped is discharged from the discharge port 29 on the heating plate 21; and reaches its bottom; at this time, the scraping plate 27 performs reverse secondary film scraping on the discharged material under the drive of the three-dimensional column 26, thereby performing secondary separation of the light molecules; finally, the material separated by the secondary film scraping directly falls from the interval of each heating plate 21 into the heavy molecule collection tank 32; the light molecules separated twice contact the upper and lower condenser plates 22 to form a liquid and fall along the three-dimensional column 26 into the condensed water collection tank 31;

[0049] S3: When the scraper 239 moves to one side of the discharge port 29 after the first film scraping of the material; since there is an anti-backsliding step 281 at the connecting part of the inner chute and the outer chute; the chute rod 231 drops from the end of the inner chute to the bottom of the anti-backsliding step 281; the chute rod 231 slides clockwise under the action of the rotating part 234; since the depth of the outer chute gradually becomes shallower in the clockwise direction; in this way, the chute rod 231 raises the scraper 239 under the action of the outer chute to avoid interfering with the material that has been film scraped; subsequently, the scraper 239 moves to the initial position of the feeding point to prepare for the next working cycle;

[0050] S4: The water entering the condensed water collection tank 31 goes from the outside of the condensate pipe 13 to the outside of the housing 1; the material entering the heavy molecule collection tank 32 is mixed with the secondary injection of carboxylic anhydride stored inside the second reactant material bin 41 and flows into the mixing tray two 44; the two materials are mixed and enter the mixing tray two 44 for heating reaction, and then the final reactant is discharged through the discharge port 45, thereby realizing the preparation of sucrose-6-ester.

Claims

1. A multi-layer group rotary continuous production device for sucrose-6-ester, comprising a housing (1), characterized in that: At the top of the housing (1), there are a first liquid inlet (11) and a second liquid inlet (19); around the housing (1), there are a condensate water pipe (13), a condensate liquid inlet (12) and a condensate liquid outlet (18); inside the housing (1), near the lower sides of the first liquid inlet (11) and the second liquid inlet (19), there is a first mixing plate (15); below the first mixing plate (15), there is a transfer box (16); below the transfer box (16), there is a first reaction layer (2); the first reaction layer (2) includes a heating plate (21); the heating plate (21) has multiple layers and four are spaced apart from each other to form a layer; the heating plate (21) is fixedly connected to the housing (1); on both the upper and lower sides of each layer of the heating plate (21), there are condensate plates (22); in the upper and lower gaps between each layer of the heating plate (21) and the condensate plate (22), there are respectively a scraper assembly (23) and a scraping-off plate (27); a three-dimensional column (26) is arranged through the middle of the heating plate (21) and the condensate plate (22); the upper end of the three-dimensional column (26) penetrates through the transfer box (16) and is fixedly connected to the first mixing plate (15); the inner end of the scraping-off plate (27) is fixedly connected to the three-dimensional column (26); the inner end of the scraper assembly (23) is hinged to the heating plate (21) and is driven by the three-dimensional column (26) to swing relative to the heating plate (21); on one side of the heating plate (21), there is a material discharge port (29); on the top of the heating plate (21), on the side away from the material discharge port (29), it is connected to the bottom of the transfer box (16) through a transfer pipe (24); the scraper assembly (23) includes a chute rod (231); the lower end of the chute rod (231) matches the chute (28) on the outer edge of the top of the heating plate (21); a main rod (238) is slidably sleeved inside the inner end of the chute rod (231), and the inner end of the main rod (238) is hinged to the heating plate (21); a sliding sleeve (233) is slidably connected to the outside of the main rod (238), and a scraper (239) is fixedly connected below; the sliding sleeve (233) is rotationally connected to a rotating part (234) through a connecting rod; in the middle of the top of the rotating part (234), there is an expansion part (235) movably arranged; the upper end of the expansion part (235) is rotationally connected to the condensate plate (22); the outside of the expansion part (235) is belt-connected to the three-dimensional column (26) through a transmission belt (236); below the first reaction layer (2), there is a collection layer (3); the collection layer (3) includes a condensate water collection tank (31), and in the middle of the inside of the condensate water collection tank (31), it is fixedly connected to the lower end of the three-dimensional column (26); the condensate water collection tank (31) is communicated with the condensate water pipe (13); outside the condensate water collection tank (31), there is a heavy molecule collection tank (32); at the bottom of the heavy molecule collection tank (32), there is a second liquid spray port (33) and it extends into the second reaction layer (4); the second reaction layer (4) includes a second reactant material bin (41), and near the second liquid spray port (33) of the second reactant material bin (41), there is a third liquid spray port (42);A second reaction feed inlet two (43) is provided at the bottom of the second reactant storage bin (41); a second mixing tray (44) is provided below the second reaction feed inlet two (43); a discharge port (45) is provided at the bottom of the second mixing tray (44).

2. The continuous production equipment for multi-layer group rotary sucrose-6-ester according to claim 1, characterized in that: Below the first liquid inlet (11) and the second liquid inlet (19), a first liquid spraying port (14) is provided; the first liquid spraying port (14) has a fine hole structure.

3. A multi-layer group rotary continuous production device for sucrose-6-ester according to claim 1, wherein: The sliding groove (28) includes an inner sliding groove and an outer sliding groove; an anti-backsliding step (281) is provided at the junction of the inner sliding groove and the outer sliding groove; the depth of the outer sliding groove gradually becomes shallower in the clockwise direction.

4. A multi-layer group rotary continuous production device for sucrose-6-ester according to claim 1, characterized in that: The rotating part (234) includes a first gear (2342), and a second gear (2343) is meshed and connected to the outside of the first gear (2342); a gear ring (2341) is meshed and connected to the outside of the second gear (2343); the second gear (2343) is rotationally connected to the connecting rod on the sliding sleeve (233).

5. A multi-layer group rotary continuous production device for sucrose-6-ester according to claim 1, characterized in that: A key groove (2351) is formed on the outside of the telescopic part (235); a sleeve (2352) is slidably connected to the outside of the key groove (2351); the sleeve (2352) is fixedly connected to the first gear (2342).

6. The continuous production equipment for multi-layer group rotary sucrose-6-ester according to claim 1, wherein: The outer edges of the heating plate (21) and the condensation plate (22) are fixedly connected to the inside of the housing (1); the condensation plate (22) is inclined outward to form a condensation circuit with the condensation liquid inlet (12) and the condensation liquid outlet (18).

7. A process flow of a multi-layer group rotary continuous production device for sucrose-6-ester according to any one of claims 1-6, characterized in that, It includes the following steps: S1: Two materials for the first reaction enter the first mixing disk (15) through the first liquid inlet (11) and the second liquid inlet (19) respectively, and the two different materials are mixed with each other at the first liquid spraying port (14) and then fall into the first mixing disk (15) together; start the control motor to rotate the three-dimensional column (26) to drive the first mixing disk (15) to operate; perform secondary mixing and stirring through the characteristics of the bowl-shaped structure of the first mixing disk (15). S2: The stirred material is conveyed to each heating plate (21) through the transfer pipe (24) under the transfer box (16); it enters the top of the heating plate (21) for preliminary preheating and light molecule separation; the three-dimensional column (26) rotates to drive the conveyor belt (236) to make the telescopic part (235) rotate; thus, the first gear (2342) inside the rotating part (234) rotates; subsequently, the second gear (2343) moves around the first gear (2342); the revolution of the first gear (2342) drives the connecting rod to push and pull the sliding sleeve (233) back and forth, making the sliding sleeve (233) reciprocate relative to the main rod (238); thereby, the scraper (239) makes a reciprocating swinging motion relative to the heating plate (21); meanwhile, the sliding groove rod (231) arranged at the outer end of the main rod (238) cooperates with the sliding groove (28); when the stirred material is injected into the top of the heating plate (21), the sliding groove rod (231) cooperates with the inner sliding groove, and under the drive of the three-dimensional column (26), the scraper (239) performs counterclockwise film scraping on the material; thus, primary film scraping of the material is achieved, and the light molecules inside the material being film-scraped are separated once; subsequently, the material being film-scraped is discharged from the discharge port (29) on the heating plate (21) and reaches its bottom; at this time, the scraping-off plate (27) performs reverse secondary film scraping on the discharged material under the drive of the three-dimensional column (26), thereby performing secondary separation of the light molecules; finally, the material separated by the secondary film scraping directly falls into the heavy molecule collection tank (32) from the interval between each heating plate (21); the light molecules separated twice contact the upper and lower condensation plates (22) to form a liquid and fall along the three-dimensional column (26) into the condensed water collection tank (31). S3: When the scraper (239) moves to one side of the discharge port (29) after primary film scraping of the material, since an anti-backsliding step (281) is arranged at the connection part of the inner sliding groove and the outer sliding groove, the sliding groove rod (231) drops from the end of the inner sliding groove to the bottom of the anti-backsliding step (281); the sliding groove rod (231) slides clockwise under the action of the rotating part (234); since the depth of the outer sliding groove gradually becomes shallower in the clockwise direction, the sliding groove rod (231) lifts the scraper (239) under the action of the outer sliding groove to avoid interfering with the material that has been film-scraped; subsequently, the scraper (239) moves to the initial position of the feeding point to prepare for the next working cycle. S4: The water entering the condensed water collection tank (31) goes from the outside of the condensed water pipe (13) to the outside of the housing (1); the material entering the heavy molecule collection tank (32) flows into the mixing tray two (44) through confluence reaction with the secondary injection of carboxylic anhydride stored inside the second reactant material bin (41); the two materials are mixed and enter the mixing tray two (44) for heating reaction, and then the final reactant is discharged through the discharge port (45), thereby realizing the preparation of sucrose-6-ester.

Images