CN113000001A

CN113000001A - A tackification disjunctor reactor for preparing PBAT

Info

Publication number: CN113000001A
Application number: CN202110299733.XA
Authority: CN
Inventors: 王战平; 席敏杰; 徐南星; 何会波
Original assignee: Luoyang Haihui New Material Co ltd
Current assignee: Luoyang Haihui New Material Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-06-22

Abstract

A kind of adhesion promoting conjoined reactor used for preparing PBAT, relate to a PBAT reaction unit, the rotary table (31) rotates and connects in the middle part of the cavity (11), the piston A (6) is connected in the cavity on the left of the rotary table (31) slidably, the piston B (19) is connected in the cavity on the right of the rotary table slidably, the elastic helical blade A (30) is connected in the outside of the axis of rotation B (28) between separation blade A (26) and rotary table slidably, the elastic helical blade B (37) is connected in the outside of the axis of rotation B (28) between rotary table and separation blade B (38) slidably; according to the invention, the reactor is arranged to be in a horizontal structure, the material is pushed into the second polycondensation reaction in an extrusion mode when the first polycondensation reaction is completed, and the product is pushed into the next process step after the second polycondensation reaction is completed, so that the defect that more viscous PBAT remains when the tackifying polycondensation reaction is completed and the next process step is carried out is realized.

Description

A tackification disjunctor reactor for preparing PBAT

Technical Field

The invention relates to a PBAT reaction device, in particular to a tackifying conjoined reactor for preparing PBAT.

Background

PBAT belongs to thermoplastic biodegradable plastics, is a copolymer of butanediol adipate and butanediol terephthalate, has the characteristics of PBA and PBT, has better ductility and elongation at break, better heat resistance and impact property, and excellent biodegradability, and is one of the best degradable materials which are very active in the research of the current biodegradable plastics and applied in the market. PBAT is a semi-crystalline polymer, generally with a crystallization temperature around 110 ℃, a melting point around 130 ℃ and a density between 1.18g/ml and 1.3 g/ml. The crystallinity of PBAT is about 30 percent approximately, and the Shore hardness is more than 85. PBAT is a copolymer of aliphatic and aromatic, and integrates the excellent degradation performance of aliphatic PBAT molecular chain polyester and the good mechanical property of aromatic polyester. During the polycondensation reaction in the process of preparing PBAT, a horizontal reactor is generally used, and the traditional horizontal reactor has difficulty in treating materials adhered in the reactor after the reaction is finished.

Disclosure of Invention

In order to overcome the defects in the background art, the invention discloses a tackifying conjoined reactor for preparing PBAT, which is characterized in that the reactor is arranged into a horizontal structure, a material is pushed into a second polycondensation reaction in an extrusion mode when the first polycondensation reaction is finished, and a product is pushed into the next process step after the second polycondensation reaction is finished, so that the defect that more viscous PBAT remains when the tackifying polycondensation reaction is finished and the next process step is carried out is overcome.

In order to realize the purpose, the invention adopts the following technical scheme:

a viscosity-increasing conjoined reactor for preparing PBAT comprises a tank body, wherein the tank body is of a horizontal structure, a cavity with openings at the left end and the right end is arranged in the tank body, a rotary disc is rotatably connected in the middle of the cavity, a through hole B is arranged at the central part of the rotary disc, two convex blocks are oppositely arranged on the side wall of the through hole B, a piston A is slidably connected in the cavity at the left side of the rotary disc, a through hole A is arranged at the central part of the piston A, the piston B is slidably connected in the cavity at the right side of the rotary disc, a ball socket is arranged at the central part at the left end of the piston B, a motor B is arranged at the left end of the piston A, a rotating shaft B arranged on the motor B sequentially passes through the through hole A and the through hole B and is connected by utilizing a ball head arranged at the end part of the rotating shaft B, a baffle plate A is fixedly connected on the rotating shaft B at the, two convex blocks are respectively arranged in the two grooves, an elastic spiral blade A is slidably connected with the outer part of a rotating shaft B between the baffle A and the rotating disc, one end of the elastic spiral blade A is fixedly connected with the baffle A, the other end of the elastic spiral blade A is fixedly connected with the rotating disc, the outer edge of the elastic spiral blade A is in clearance fit with the side wall of the cavity, slide pieces A are respectively arranged on the two opposite sides of the inner edge of the elastic spiral blade A at the same position with the convex blocks at intervals along the axial direction, two groups of slide pieces A are respectively arranged in the two grooves, the elastic spiral blade B is slidably connected with the outer part of the rotating shaft B between the rotating disc and the baffle B, one end of the elastic spiral blade B is fixedly connected with the rotating disc, the other end of the elastic spiral blade B is fixedly connected with the baffle B, the outer edge of the elastic spiral blade B is in clearance fit with the side wall of, two groups of sliding blades B are respectively arranged in the two grooves, when the elastic helical blade A is in an unfolding state, the elastic helical blade B is in a tightening state, when the elastic helical blade A is in a tightening state, the elastic helical blade B is in an unfolding state, one end of the motor B, which is back to the rotating shaft B, is provided with a rack, teeth are arranged on the rack at intervals, a gear is sleeved on the rotating shaft A arranged on the motor A, the gear and the rotating wheel clamp the rack, the teeth are meshed with the gear, the left side of the top of the tank body is provided with a feed pipe which penetrates through the cavity, the position of the top of the tank body, which is positioned on the left side of the rotating disc, is provided with an air outlet pipe A which penetrates through the cavity, an inclined pipe A which is arranged between the feed pipe and the air outlet pipe A and has one end, the bottom air outlet pipe A and one end which is high, the position of the top of the tank body, which is, the bottom of the tank body is provided with a U-shaped connecting pipe which runs through the cavities on the two sides of the turntable, and the middle part of the U-shaped connecting pipe is provided with a discharging pipe.

The viscosity-increasing conjoined reactor for preparing PBAT is characterized in that a valve A is arranged on a feeding pipe between an inclined pipe A and a tank body, and a valve B is arranged on a feeding pipe above the intersection of the inclined pipe A and the feeding pipe.

The tackification conjoined reactor for preparing PBAT is characterized in that a valve C is arranged on an air outlet pipe A between an inclined pipe A and a tank body, a valve D is arranged on the air outlet pipe A above the intersection of the inclined pipe A and the air outlet pipe A, and a valve G is arranged on a return pipe.

The tackification conjoined reactor for preparing PBAT is characterized in that a valve F is arranged on an air outlet pipe B between an inclined pipe B and a tank body, and a valve E is arranged on the air outlet pipe B above the intersection of the inclined pipe B and the air outlet pipe B.

The tackifying conjoined reactor for preparing PBAT is characterized in that a valve H is arranged on a U-shaped connecting pipe positioned on the left side of the discharging pipe, and a valve K is arranged on a U-shaped connecting pipe positioned on the right side of the discharging pipe.

The viscosity increasing conjoined reactor for preparing PBAT is provided with a valve J on a discharging pipe.

The tackification conjoined reactor for preparing PBAT is characterized in that a heating wire A is embedded in the left half tank wall of a tank body, and a heating wire B is embedded in the right half tank wall of the tank body.

The tackifying conjoined reactor for preparing PBAT has the advantages that the spiral directions of the elastic spiral blade A and the elastic spiral blade B are opposite.

The viscosity increasing conjoined reactor for preparing PBAT is characterized in that a support is arranged at the bottom of a tank body, an L-shaped support rod is arranged between the support and a motor A, and a rotating wheel is arranged on the L-shaped support rod through a wheel shaft.

The tackifying conjoined reactor for preparing PBAT is characterized in that a ring groove is arranged on the side wall in the middle of a cavity, a raised ring is arranged on the outer edge surface of a turntable, and the raised ring is arranged in the ring groove.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

according to the tackifying conjoined reactor for preparing PBAT, the reactor is arranged to be of a horizontal structure, materials are pushed into a second polycondensation reaction in an extrusion mode when the first polycondensation reaction is completed, and a product is pushed into the next process step after the second polycondensation reaction is completed, so that the defect that more viscous PBAT remains when the tackifying polycondensation reaction is completed and the next process is carried out is overcome; the invention has unique design, strong practicability, energy saving, consumption reduction, good reaction effect and great market popularization value.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of another embodiment of the present invention;

FIG. 3 is a schematic structural view of a piston A of the present invention;

FIG. 4 is a schematic view of the structure of the rotating shaft B and the turntable;

FIG. 5 is a schematic view of the structure of the invention in which the shaft B and the elastic helical blade A are engaged;

FIG. 6 is a schematic view of the structure of the invention in which the shaft B and the elastic helical blade B are engaged;

FIG. 7 is a schematic view of the structure of the invention in which the shaft B and the piston B are engaged;

FIG. 8 is a schematic view of the structure of the baffle A, the baffle B and the rotating shaft B;

fig. 9 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. a rack; 2. teeth; 3. a motor A; 4. a rotating shaft A; 5. a gear; 6. a piston A; 7. a valve A; 8. a valve B; 9. a feed pipe; 10. a tank body; 11. a cavity; 12. an inclined tube A; 13. a valve C; 14. a valve D; 15. an air outlet pipe A; 16. an air outlet pipe B; 17. a valve E; 18. a valve F; 19. a piston B; 20. an inclined tube B; 21. a valve G; 22. a rotating wheel; 23. a wheel axle; 24. an L-shaped support bar; 25. a motor B; 26. a baffle plate A; 27. a support; 28. a rotating shaft B; 29. a trough body; 30. an elastic helical blade A; 31. a turntable; 32. a valve H; 33. a U-shaped connecting pipe; 34. a discharge pipe; 35. a valve J; 36. a valve K; 37. an elastic helical blade B; 38. a baffle sheet B; 39. a return pipe; 40. punching a hole A; 41. a raised block; 42. punching a hole B; 43. a slip sheet A; 44. a slip sheet B; 45. a ball socket; 46. a ball head; 47. a ring groove; 48. a raised ring; 49. an electric heating wire A; 50. the heating wire B.

Detailed Description

The present invention will be explained in more detail by the following examples, which are not intended to limit the present invention, and all changes and modifications within the scope of the present invention are intended to be protected by the disclosure of the present invention;

the viscosity-increasing conjoined reactor for preparing PBAT described in conjunction with the attached figures 1-9 comprises a tank 10, the tank 10 is of a horizontal structure, a cavity 11 with openings at the left and right ends is arranged in the tank 10, a heating wire A49 is embedded in the tank wall at the left half part of the tank 10, a heating wire B50 is embedded in the tank wall at the right half part of the tank 10, a turntable 31 is rotatably connected to the middle part of the cavity 11, a ring groove 47 is arranged on the side wall at the middle part of the cavity 11, a raised ring 48 is arranged on the outer edge surface of the turntable 31, the raised ring 48 is arranged in the ring groove 47, a through hole B42 is arranged at the center part of the turntable 31, two raised blocks 41 are oppositely arranged on the side wall of a through hole B42, a piston A6 is slidably connected in the cavity 11 at the left side of the turntable 31, a through hole A40 is arranged at the center part of the piston A6, a piston B19 is slidably connected in the cavity 11 at the right side of the, a rotating shaft B28 arranged on a motor B25 sequentially passes through a through hole A40 and a through hole B42 and is connected with a ball head of a ball socket 45 by a ball head 46 arranged at the end part of the rotating shaft B28, a baffle A26 is fixedly connected on the rotating shaft B28 positioned at the right side of a piston A6 and at the left side of a rotating disc 31 in a cavity 11, a baffle B38 is fixedly connected at the end part of the rotating shaft B28, two groove bodies 29 are oppositely arranged on the outer edge surface of the rotating shaft B28 between the baffle A26 and the baffle B38, two convex blocks 41 are respectively arranged in the two groove bodies 29, an elastic helical blade A30 is slidably connected with the outer part of the rotating shaft B28 between the baffle A26 and the rotating disc 31, one end of the elastic helical blade A30 is fixedly connected with the baffle A26, the other end of the elastic helical blade A30 is fixedly connected with the rotating disc 31, the outer edge of the elastic helical blade A30 is in clearance fit with the side wall of the cavity 11, two opposite sides of the inner edge of the elastic helical blade A, an elastic spiral blade B37 is connected with the outside of a rotating shaft B28 between a rotating disc 31 and a baffle B38 in a sliding manner, one end of an elastic spiral blade B37 is fixedly connected with the rotating disc 31, the other end of an elastic spiral blade B37 is fixedly connected with a baffle B38, the outer edge of the elastic spiral blade B37 is in clearance fit with the side wall of the cavity 11, slide blades B44 are axially arranged on two opposite sides of the inner edge of the elastic spiral blade B37 at the same position as the protruding block 41 respectively, two groups of slide blades B44 are respectively arranged in the two groove bodies 29, when the elastic spiral blade A30 is in an extended state, the elastic spiral blade B37 is in a tightened state, when the elastic spiral blade A30 is in a tightened state, the elastic spiral blade B37 is in an extended state, the spiral directions of the elastic spiral blade A30 and the elastic spiral blade B8 are opposite, a rack 1 is arranged at one end of a motor B25, which is back to the rotating shaft B28, teeth 2 are arranged on the rack 1 at intervals, a rotating shaft, the gear 5 and the rotating wheel 22 clamp the rack 1, the tooth 2 is engaged with the gear 5, the bottom of the tank body 10 is provided with a support 27, an L-shaped support rod 24 is arranged between the support 27 and the motor A3, the rotating wheel 22 is arranged on the L-shaped support rod 24 through a wheel shaft 23, the left side of the top of the tank body 10 is provided with a feed pipe 9 penetrating through the cavity 11, the top of the tank body 10 is provided with an air outlet pipe A15 penetrating through the cavity 11 at the left side of the rotating disc 31, an inclined pipe A12 with one end of the feed pipe 9 being lower than the air outlet pipe A15 and the other end being higher than the air outlet pipe A15 is arranged between the feed pipe 9 and the air outlet pipe A15, the feed pipe A12 between the inclined pipe A12 and the tank body 10 is provided with a valve A7, the feed pipe A6859 above the intersection of the inclined pipe A12 and the feed pipe A9 is provided with a valve B8, the air outlet pipe A15 between the, an air outlet pipe B16 penetrating through the cavity 11 is arranged at the position, on the right side of the rotary disc 31, of the top of the tank body 10, a return pipe 39 penetrating through the cavity 11 is arranged on the right side of the top of the tank body 10, a valve G21 is arranged on the return pipe 39, an inclined pipe B20 with one end, bottom, air outlet pipe B16 and one end high is arranged between the return pipe 39 and the air outlet pipe B16, a valve F18 is arranged on the air outlet pipe B16 between the inclined pipe B20 and the tank body 10, a valve E17 is arranged on the air outlet pipe B16 at the intersection of the inclined pipe B20 and the air outlet pipe B16, a U-shaped connecting pipe 33 penetrating through the cavities 11 on the two sides of the rotary disc 31 is arranged at the bottom of the tank body 10, a valve H32 is arranged on the U-shaped connecting pipe 33 on the left side of the discharge pipe 34, a valve K36 is arranged on the.

The implementation of the tackifying conjoined reactor for preparing PBAT, which is disclosed by the invention, connects a motor A3, a motor B25, a heating wire A49 and a heating wire B50 with a control switch and a power supply respectively, connects an air outlet pipe A15 with a first vacuum pump and a recovery tank, connects an air outlet pipe B16 with a second vacuum pump and a recovery tank, opens a valve B8, a valve A7, a valve C13, a valve D14 and the first vacuum pump, closes a valve E17, a valve F18, a valve G21, a valve H32, a valve J35 and a valve K36, places a piston A6 at the left end of a cavity 11, injects a product obtained after secondary esterification of a catalyst added by T esterification and A esterification into the cavity 11 between a baffle A26 and a turntable 31 along a feed pipe 9, closes the valve B8, controls the temperature of the left half part of the cavity 11 at 230 ℃ by the heating wire A49 at 220 ℃ and 230 ℃ to start a first polycondensation reaction, and at the moment, a rotating shaft B28 starts to rotate, and a rotating hole 86 28 is perforated, so the piston A6 does not rotate, because the baffle A26 is fixed with the rotating shaft B28, the rotating disc 31 is blocked in the groove 29 through the protruding block 41, the rotating disc 31 is connected with the middle part of the cavity 11 in a rotating way, so the baffle A26 and the rotating disc 31 rotate along with the rotating shaft B28, because one end of the elastic spiral blade A30 is fixed with the baffle A26, the other end of the elastic spiral blade A30 is fixed with the rotating disc 31, the two opposite sides of the inner edge of the elastic spiral blade A30 at the same position with the protruding block 41 are respectively provided with sliding sheets A43 along the axial direction at intervals, two groups of sliding sheets A43 are respectively arranged in the two grooves 29, so the elastic spiral blade A30 also rotates along with the rotating shaft B28, at the moment, the elastic spiral blade A30 is in an extending state, because the baffle B38 is fixed with the rotating shaft B28, so the B38 also rotates along with the rotating shaft B28, one end of the elastic spiral blade B37 is fixed with, the two opposite sides of the inner edge of the elastic spiral blade B37 at the same position as the convex block 41 are respectively provided with a sliding sheet B44 along the axial direction at intervals, two groups of sliding sheets B44 are respectively arranged in two groove bodies 29, so the elastic spiral blade B37 also rotates along with the rotating shaft B28, at this time, the elastic spiral blade B37 is in a contraction state under the clamping of the rotating disc 31 and the baffle B38, because the ball head 46 arranged at the end part of the rotating shaft B28 is arranged in the ball socket 45 arranged in the piston B19, the piston B19 does not rotate, the material entering the cavity 11 is continuously conveyed to the rotating disc 31 by the elastic spiral blade A30 from one end of the piston A6 in the cavity 11, when the material reaches the rotating disc 31 and can not be conveyed forward any more, the material which is deposited flows out along the air outlet pipe A15, then flows back to the cavity 11 along the inclined pipe A12 and the feeding pipe 9 and is conveyed to the rotating disc 31 continuously, the esterified water, BDO and byproducts generated by the reaction are, after the first polycondensation is completed, the motor B25 is turned off, the mixture is kept still for a while, after the first polycondensation products in the feeding pipe 9, the inclined pipe A12 and the air outlet pipe A15 all flow back into the cavity 11, the valve A7, the valve C13, the valve D14 and the first vacuum pump are turned off, the valve H32, the valve K36, the valve E17, the valve F18, the valve G21, the second vacuum pump and the motor A3 are turned on, the rotating shaft A4 starts to rotate to drive the gear 5 to rotate, the gear 5 drives the rack 1 engaged with the gear 5 to slide towards the cavity 11, the rotating shaft B28 is driven by the sliding of the rack 1 to slide towards the cavity 11 on the right side of the rotating disc 31, the elastic spiral blade A30 is connected outside the rotating shaft B28 in a sliding mode, the baffle A30 fixed on the rotating shaft B28 presses the elastic spiral blade A30 to be gradually tightened, meanwhile, the end of the rotating shaft B28 pushes the piston B19 to be gradually far away from, so that the baffle B38 fixed on the rotating shaft B28 pulls the elastic helical blade B37 to gradually expand, the piston A6 gradually approaches the rotating disc 31 to scrape the first polycondensation product adhered to the side wall of the cavity 11, so that the first polycondensation product in the cavity 11 on the left side of the rotating disc 31 gradually flows into the cavity 11 on the right side of the rotating disc 31 along the "U" -shaped connecting pipe 33 until the multiple layers of elastic helical blades A30 are overlapped, the first polycondensation product in the cavity 11 on the left side of the rotating disc 31 completely flows into the cavity 11 on the right side of the rotating disc 31, the motor A3, the valve H32 and the valve K36 are closed, the temperature of the right side of the cavity 11 is controlled at 230 and 240 ℃ by the heating wire B50, the motor B25 is started, and the first polycondensation product in the cavity 11 on the right side of the rotating disc 31 after the motor B25 is started is continuously conveyed to the rotating disc 31 by the elastic helical blade B37 from one end of the piston B19 in the cavity 11, when the materials reach the rotary disc 31 and can not be conveyed forward any more, the continuously deposited materials flow out along the gas outlet pipe B16, and then flow back to the cavity 11 along the inclined pipe B20 and the return pipe 39 to be conveyed to the rotary disc 31 continuously, esterified water, BDO and by-product THF produced by the reaction are pumped to a recovery tank along the gas outlet pipe B16 by a second vacuum pump, after the second polycondensation is completed, the motor B25 is closed, the reaction tank is kept still for a while until second polycondensation products in the return pipe 39, the inclined pipe B20 and the gas outlet pipe B16 flow back to the cavity 11, the valve E17, the valve F18, the valve G21 and the second vacuum pump are closed, the valve J35 and the valve K36 are opened, the motor A3 is controlled to rotate reversely, so that the rotary shaft A4 rotates reversely, the rack 1 is withdrawn from the cavity 11 gradually, and new reaction materials can be injected again according to the procedures until the piston A6 retreats to the left end of the cavity 11 to.

The present invention is not described in detail in the prior art.

Claims

1. A kind of viscosity-increasing conjoined reactor used for preparing PBAT, its characteristic is: comprises a tank body (10), the tank body (10) is of a horizontal structure, a cavity (11) with openings at the left end and the right end is arranged in the tank body (10), a turntable (31) is rotatably connected in the middle of the cavity (11), a through hole B (42) is arranged at the central part of the turntable (31), two convex blocks (41) are oppositely arranged on the side wall of the through hole B (42), a piston A (6) is slidably connected in the cavity (11) at the left side of the turntable (31), a through hole A (40) is arranged at the central part of the piston A (6), a piston B (19) is slidably connected in the cavity (11) at the right side of the turntable (31), a ball socket (45) is arranged at the central part at the left end of the piston B (19), a motor B (25) is positioned at the left end of the piston A (6), a rotating shaft B (28) arranged on the motor B (25) sequentially penetrates through the through hole A (40) and the through hole B (42) and is connected with, a baffle A (26) is fixedly connected on a rotating shaft B (28) which is positioned at the right side of a piston A (6) and at the left side of a rotating disc (31) in a cavity (11), a baffle B (38) is fixedly connected at the end part of the rotating shaft B (28), two groove bodies (29) are oppositely arranged on the outer edge surface of the rotating shaft B (28) between the baffle A (26) and the baffle B (38), two convex blocks (41) are respectively arranged in the two groove bodies (29), an elastic helical blade A (30) is slidably connected with the outer part of the rotating shaft B (28) between the baffle A (26) and the rotating disc (31), one end of the elastic helical blade A (30) is fixedly connected with the baffle A (26), the other end of the elastic helical blade A (30) is fixedly connected with the rotating disc (31), the outer edge of the elastic helical blade A (30) is in clearance fit with the side wall of the cavity (11), and sliding blades A (43) are respectively arranged at intervals along the axial direction on the two opposite sides of the inner edge of the elastic, two groups of sliding pieces A (43) are respectively arranged in the two groove bodies (29), an elastic spiral blade B (37) is connected with the outer part of a rotating shaft B (28) between the rotating disc (31) and the baffle plate B (38) in a sliding way, one end of the elastic spiral blade B (37) is fixedly connected with the rotating disc (31), the other end of the elastic spiral blade B (37) is fixedly connected with the baffle plate B (38), the outer edge of the elastic spiral blade B (37) is in clearance fit with the side wall of the cavity body (11), the sliding pieces B (44) are respectively arranged on two opposite sides of the inner edge of the elastic spiral blade B (37) at the same position with the protruding block (41) along the axial direction at intervals, the two groups of sliding pieces B (44) are respectively arranged in the two groove bodies (29), when the elastic spiral blade A (30) is in an unfolding state, the elastic spiral blade B (37) is in a tightening state, when the elastic spiral blade A (30) is in a tightening state, a rack (1) is arranged at one end of a motor B (25) back to a rotating shaft B (28), teeth (2) are arranged on the rack (1) at intervals, a gear (5) is sleeved on a rotating shaft A (4) arranged on the motor A (3), the rack (1) is clamped by the gear (5) and a rotating wheel (22), the teeth (2) are meshed with the gear (5), a feeding pipe (9) penetrating through a cavity (11) is arranged on the left side of the top of a tank body (10), an air outlet pipe A (15) penetrating through the cavity (11) is arranged at the position, located on the left side of a rotating disc (31), of the top of the tank body (10), an inclined pipe A (12) with one end being high, of the feeding pipe (9) and the bottom, of the air outlet pipe A (15) is arranged between the feeding pipe (9) and the air outlet pipe A (15), an air outlet pipe B (16) penetrating through the cavity (11) is arranged at the position, located on the right side of the rotating disc, an inclined tube B (20) with one end of the return tube (39) being lower than the air outlet tube B (16) and the other end being higher is arranged between the return tube (39) and the air outlet tube B (16), a U-shaped connecting tube (33) penetrating through the cavities (11) on the two sides of the turntable (31) is arranged at the bottom of the tank body (10), and a discharge tube (34) is arranged in the middle of the U-shaped connecting tube (33).

2. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: a valve A (7) is arranged on the feeding pipe (9) between the inclined pipe A (12) and the tank body (10), and a valve B (8) is arranged on the feeding pipe (9) above the intersection of the inclined pipe A (12) and the feeding pipe (9).

3. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: a valve C (13) is arranged on an air outlet pipe A (15) between the inclined pipe A (12) and the tank body (10), a valve D (14) is arranged on the air outlet pipe A (15) above the intersection of the inclined pipe A (12) and the air outlet pipe A (15), and a valve G (21) is arranged on the return pipe (39).

4. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: a valve F (18) is arranged on the air outlet pipe B (16) between the inclined pipe B (20) and the tank body (10), and a valve E (17) is arranged on the air outlet pipe B (16) above the intersection of the inclined pipe B (20) and the air outlet pipe B (16).

5. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: a valve H (32) is arranged on the U-shaped connecting pipe (33) positioned on the left side of the discharge pipe (34), and a valve K (36) is arranged on the U-shaped connecting pipe (33) positioned on the right side of the discharge pipe (34).

6. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: a valve J (35) is arranged on the discharge pipe (34).

7. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: the left half tank wall of the tank body (10) is embedded with an electric heating wire A (49), and the right half tank wall of the tank body (10) is embedded with an electric heating wire B (50).

8. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: the spiral directions of the elastic spiral blade A (30) and the elastic spiral blade B (37) are opposite.

9. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: a support (27) is arranged at the bottom of the tank body (10), an L-shaped support rod (24) is arranged between the support (27) and the motor A (3), and the rotating wheel (22) is arranged on the L-shaped support rod (24) through a wheel shaft (23).

10. The tackified integrated reactor for the preparation of PBAT of claim 1, characterized in that: the side wall of the middle part of the cavity (11) is provided with a ring groove (47), the outer edge surface of the rotating disc (31) is provided with a bulge ring (48), and the bulge ring (48) is arranged in the ring groove (47).