Terephthalic acid processing heat treatment device and technology thereof

Abstract

The invention relates to the technical field of phthalic acid processing, which comprises a tank body, a top cover, a heating sleeve, a mounting frame and supporting legs, the top end of the tank body is connected with the top cover, a first connecting pipe is rotatably mounted in the middle of the top end of the top cover, and a mounting shell is buckled on the top end of the top cover; a first gear, a second gear, a rotating shaft, a positioning plate, a first connecting piece, a second liquid inlet pipe and a positioning ring are further arranged in the mounting shell, the first gear is fixedly arranged on the upper portion of the outer side of the first connecting pipe in a sleeving mode, the first gear is meshed with the second gear, and a motor is fixedly mounted at the position, located over the second gear, of the top end of the mounting shell; the top end of the rotating shaft penetrates through the mounting shell and is connected with an output shaft at the bottom end of the motor. According to the terephthalic acid processing heat treatment device and the technology thereof, the inside and the outside of a tank body can be heated at the same time, so that phthalic acid is uniformly heated, the purpose of uniform heating is achieved, and then the processing efficiency of the phthalic acid can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of terephthalic acid processing, and in particular to a terephthalic acid processing heat treatment device and a process thereof. Background Art

[0002] Phthalic acid is a white needle-shaped crystal or powder. It is flammable. It is low in toxicity. Its density is 1.510. It sublimates at about 402℃ under normal pressure. If heated in a closed container, it can melt at 425℃. It is soluble in alkaline solution, slightly soluble in hot ethanol, and insoluble in water, ether, glacial acetic acid and chloroform. Phthalic acid generates phthalic anhydride after heating. The chemical formula of the anhydride generated is different according to its substitution position, namely phthalic acid, terephthalic acid and isophthalic acid.

[0003] This product is mostly used in the production of polyethylene terephthalate (polyester), which is an important raw material for polyester fibers, films, plastic products, insulating paints and plasticizers, and is also used in the production of medicines, dyes and other products. Phthalic acid needs to be heated during processing, and chemical heating reactors are usually used. However, existing chemical heating reactors have uneven heating, which will lead to uneven heating of phthalic acid raw materials and affect its production efficiency.

[0004] Therefore, we propose a terephthalic acid processing heat treatment device and process thereof. Summary of the invention

[0005] The main purpose of the present invention is to provide a terephthalic acid processing heat treatment device and a process thereof, which can heat the inside and outside of a tank simultaneously, so that the terephthalic acid is heated evenly, thereby achieving the purpose of uniform heating, thereby being able to improve the processing efficiency of terephthalic acid and effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A terephthalic acid processing heat treatment device comprises a tank body, a top cover, a heating sleeve, a mounting frame and legs, the top of the tank body is connected to the top cover, a first connecting pipe is rotatably mounted at the center of the top of the top cover, a mounting shell is buckled at the top of the top cover, the first connecting pipe is located in the mounting shell, a first gear, a second gear, a rotating shaft, a positioning plate, a first connecting piece, a second liquid inlet pipe and a positioning ring are also arranged in the mounting shell, the first gear is fixedly sleeved on the upper part of the outer side of the first connecting pipe, the first gear and the second gear are meshed, a motor is fixedly mounted on the top of the mounting shell just above the second gear, the second gear is fixedly sleeved on the lower part of the outer side of the rotating shaft, and the top of the rotating shaft passes through the mounting shell and is connected to the output shaft at the bottom of the motor;

[0008] A stirring mechanism is provided inside the tank body, the bottom end of the first connecting pipe passes through the top cover and is connected to the stirring mechanism, and the stirring mechanism is rotatably connected to the inner wall of the bottom end of the tank body;

[0009] The stirring mechanism comprises a stirring member, a second connecting pipe, a second liquid discharge pipe, a mounting seat, a stirring rod and a second connecting member, the stirring member is a vertically arranged rectangular frame structure, a connecting rod is horizontally and vertically connected to the center of the stirring member, the center of the top of the stirring member is connected to the bottom end of the first connecting pipe, the center of the bottom of the stirring member is connected to the top end of the second connecting pipe, the lower part of the second connecting pipe is threadedly connected to the mounting seat, the two sides of the mounting seat are fixedly welded with stirring rods, the bottom end of the second connecting pipe is connected to the top end of the second liquid discharge pipe through the second connecting member, the bottom end of the second liquid discharge pipe passes through the inner wall of the bottom end of the tank body and is connected to the sealing cover, and the second liquid discharge pipe is rotatably connected to the tank body;

[0010] A heating sleeve is fixedly mounted on the outer side of the tank body, and a heating chamber for heating the outer wall of the tank body is arranged inside the heating sleeve. The mounting frame is mounted on the lower outer side of the heating sleeve, and legs are vertically inserted at the four corners of the lower end surface of the mounting frame. A groove is arranged in the center of the bottom end of the heating sleeve, and a second liquid discharge pipe and a discharge pipe are respectively connected to the bottom end of the tank body, and the second liquid discharge pipe and the discharge pipe are both located in the groove.

[0011] By adopting the above technical solution and designing the heating sleeve, heating oil can be injected into the outer side of the tank body, and the heating oil contacts the outer wall of the tank body, and heats the phthalic acid raw material inside the tank body by heat conduction; at the same time, the heating oil is added into the first connecting pipe through the second liquid inlet pipe and the first connecting piece, and enters the second channel in the stirring piece through the first channel and the through hole in the first connecting pipe, and the heating oil fills the stirring piece and the connecting rod, and the heating oil heats the phthalic acid raw material inside the tank body by heat conduction.

[0012] By using the two heating structures in coordination, the inside and outside of the tank can be heated simultaneously, so that the phthalic acid is heated evenly, achieving the purpose of uniform heating, and further improving the processing efficiency of the phthalic acid.

[0013] Specifically, the top end of the first connecting tube is rotatably connected to the bottom end of the second liquid inlet tube through a first connecting member, and the top end of the mounting shell is also fixedly connected to a support member for limiting the position of the second liquid inlet tube, and the top end of the support member is fixedly sleeved on the outside of the first connecting tube.

[0014] Specifically, a positioning ring for supporting the first gear is fixedly sleeved on the upper outer side of the first connecting tube, and the positioning ring is located below the first gear. A positioning plate is fixedly embedded in the center of the lower end surface of the second gear, and the bottom end of the rotating shaft passes through the center of the second gear and is fixedly inserted in the center of the upper end surface of the positioning plate.

[0015] Specifically, a first latch tooth is provided on the outer side of the first gear, and a second latch tooth matched with the first latch tooth is provided on the outer side of the second gear. There are multiple first latch teeth and multiple second latch teeth, and the first latch teeth and the second latch teeth are staggered. The multiple first latch teeth are arranged in a circular array with the center of the first gear as the center; the multiple second latch teeth are arranged in a circular array with the center of the second gear as the center; the first latch tooth and the second latch tooth are meshed, so that the second gear can drive the first gear to rotate, and the first connecting pipe, the second liquid inlet pipe, the stirring member, the second connecting pipe and the second liquid discharge pipe are connected.

[0016] Specifically, a circular ring-shaped baffle is fixedly sleeved on the lower outer side of the second connecting tube, a threaded groove is provided in the mounting seat, the mounting seat is threadedly connected to the lower outer side of the second connecting tube, the bottom end of the first connecting tube passes through the top end of the stirring element and is fixedly connected to the baffle, and the top end of the second connecting tube passes through the bottom end of the stirring element and is fixedly connected to the baffle.

[0017] By adopting the above technical solution, the motor drives the second gear to rotate through the rotating shaft, the second gear is meshed with the first gear, the first gear can drive the first connecting pipe to rotate, the first connecting pipe can drive the stirring mechanism to rotate, the stirring member and the stirring rod can mix and stir the terephthalic acid raw material, and the stirring member and the connecting rod are in contact with the terephthalic acid raw material during rotation, so that the terephthalic acid raw material is evenly heated.

[0018] Specifically, the first connecting tube and the second connecting tube are provided with a first channel, both sides of the first connecting tube and the second connecting tube located at one end of the stirring member are provided with through holes connected to the first channel, and the stirring member is provided with a second channel connected to the through hole.

[0019] Specifically, a first liquid inlet pipe is vertically inserted into the upper part of one side of the heating sleeve, and a first liquid discharge pipe is also fixedly inserted into the bottom end of the heating sleeve. The discharge pipe is an L-shaped structure, and two discharge pipes are relatively arranged. The second liquid discharge pipe is located between the two groups of the discharge pipes, and the two discharge pipes have different directions.

[0020] By adopting the above technical solution, through the coordinated use of the first gear, the second gear, the motor and the rotating shaft, the first connecting pipe can drive the stirring mechanism to rotate, and at the same time, with the design of the second liquid inlet pipe and the second liquid discharge pipe, the first connecting pipe can inject heating oil into the stirring element, and the second connecting pipe can discharge the heating oil in the stirring element, thereby achieving the purpose of circulating heating, and further improving the practicality of the device.

[0021] A production process of a terephthalic acid processing heat treatment device comprises the following steps:

[0022] S1, adding phthalic acid raw material into the tank body through the feed pipe, introducing heating oil into the heating chamber inside the heating jacket through the first liquid inlet pipe, and after the heating oil fills the heating chamber, the heating oil is discharged from the first liquid discharge pipe, and the heating oil contacts the outer wall of the tank body, and heats the phthalic acid raw material inside the tank body by heat conduction;

[0023] S2, adding heating oil from the second liquid inlet pipe and the first connecting piece into the first connecting pipe at the same time, and entering the second channel in the stirring piece through the first channel and the through hole in the first connecting pipe, the heating oil fills the stirring piece and the connecting rod, and the heating oil heats the phthalic acid raw material in the tank body by heat conduction, and the heating oil in the stirring piece is discharged through the second connecting pipe and the second liquid discharge pipe;

[0024] S3. At the same time, the motor is started, and the motor drives the second gear to rotate through the rotating shaft. The second gear is meshed with the first gear. The first gear can drive the first connecting pipe to rotate. The first connecting pipe can drive the stirring mechanism to rotate. The stirring member and the stirring rod can mix and stir the terephthalic acid raw material. The stirring member and the connecting rod are in contact with the terephthalic acid raw material during rotation, so that the terephthalic acid raw material is heated evenly.

[0025] Beneficial effects of the present invention:

[0026] (1) The terephthalic acid processing heat treatment device and process described in the present invention, through the design of the heating sleeve, can be injected into the outer side of the tank body heating oil, the heating oil contacts the outer wall of the tank body, and heats the phthalic acid raw material inside the tank body by heat conduction; at the same time, the heating oil is added into the first connecting pipe through the second liquid inlet pipe and the first connecting piece, and enters the second channel in the stirring piece through the first channel and the through hole in the first connecting pipe, the heating oil fills the stirring piece and the connecting rod, and the heating oil heats the phthalic acid raw material inside the tank body by heat conduction.

[0027] By using the above two heating structures in combination, the inside and outside of the tank can be heated simultaneously, so that the phthalic acid is heated evenly, achieving the purpose of uniform heating, thereby improving the processing efficiency of phthalic acid;

[0028] (2) A terephthalic acid processing heat treatment device and process thereof described in the present invention, wherein the motor drives the second gear to rotate through the rotating shaft, the second gear is meshed with the first gear, the first gear can drive the first connecting pipe to rotate, the first connecting pipe can drive the stirring mechanism to rotate, the stirring element and the stirring rod can mix and stir the terephthalic acid raw material, and the stirring element and the connecting rod are in contact with the terephthalic acid raw material during the rotation process, so that the terephthalic acid raw material is heated evenly;

[0029] Through the coordinated use of the first gear, the second gear, the motor and the rotating shaft, the first connecting pipe can drive the stirring mechanism to rotate. At the same time, with the design of the second liquid inlet pipe and the second liquid discharge pipe, the first connecting pipe can inject heating oil into the stirring element, and the second connecting pipe can discharge the heating oil in the stirring element, thereby achieving the purpose of circulating heating, and further improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 For the present invention Figure 1 Enlarged view of point B in the middle;

[0034] Figure 4 A bottom view of the tank body of the present invention;

[0035] Figure 5 A three-dimensional diagram of a stirring member of the present invention;

[0036] Figure 6 A three-dimensional diagram of the mounting base of the present invention;

[0037] Figure 7 A connection diagram of the first gear and the second gear of the present invention;

[0038] In the figure: 1. tank body; 2. top cover; 3. heating sleeve; 4. mounting frame; 5. support leg; 6. mounting shell; 7. stirring mechanism; 8. first connecting pipe; 9. stirring member; 10. second connecting pipe; 11. first liquid inlet pipe; 12. heating chamber; 13. first liquid discharge pipe; 14. groove; 15. second liquid discharge pipe; 16. discharge pipe; 17. first channel; 18. positioning ring; 19. first gear; 20. second gear; 21. rotating shaft; 22. positioning plate; 23. first connecting member; 24. second liquid inlet pipe; 25. supporting member; 26. motor; 27. through hole; 28. second channel; 29. ​​baffle; 30. mounting seat; 31. stirring rod; 32. second connecting member; 33. baffle; 34. connecting rod; 35. first latch tooth; 36. second latch tooth; 37. threaded groove. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] As an embodiment of the present invention, Figure 1-Figure 7 As shown, a terephthalic acid processing heat treatment device described in the present invention comprises a tank body 1, a top cover 2, a heating sleeve 3, a mounting frame 4 and a leg 5, the top of the tank body 1 is connected to the top cover 2, the top of the top cover 2 is rotatably mounted with a first connecting pipe 8, the top of the top cover 2 is buckled with a mounting shell 6, the first connecting pipe 8 is located in the mounting shell 6, the mounting shell 6 is also provided with a first gear 19, a second gear 20, a rotating shaft 21, a positioning plate 22, a first connecting member 23, a second liquid inlet pipe 24 and a positioning ring 18, the first gear 19 is fixedly sleeved on the upper outer side of the first connecting pipe 8, the first gear 19 and the second gear 20 are meshed, the top of the mounting shell 6 is located directly above the second gear 20 and a motor 26 is fixedly mounted, the second gear 20 is fixedly sleeved on the lower outer side of the rotating shaft 21, the top of the rotating shaft 21 passes through the mounting shell 6 and is connected to the output shaft at the bottom of the motor 26;

[0041] Four supporting legs 5 are arranged in parallel with each other, and the design of the mounting frame 4 facilitates the installation of the device.

[0042] A stirring mechanism 7 is provided inside the tank body 1, and the bottom end of the first connecting pipe 8 passes through the top cover 2 and is connected to the stirring mechanism 7, and the stirring mechanism 7 is rotatably connected to the inner wall of the bottom end of the tank body 1;

[0043] The stirring mechanism 7 includes a stirring member 9, a second connecting pipe 10, a second liquid discharge pipe 15, a mounting seat 30, a stirring rod 31 and a second connecting member 32. The stirring member 9 is a vertically arranged rectangular frame structure. A connecting rod 34 is horizontally and vertically connected to the center of the stirring member 9. The center of the top of the stirring member 9 is connected to the bottom of the first connecting pipe 8, and the center of the bottom of the stirring member 9 is connected to the top of the second connecting pipe 10. The lower part of the second connecting pipe 10 is threadedly connected to the mounting seat 30, and the stirring rods 31 are fixedly welded on both sides of the mounting seat 30. The bottom end of the second connecting pipe 10 is connected to the top of the second liquid discharge pipe 15 through the second connecting member 32. The bottom end of the second liquid discharge pipe 15 passes through the inner wall of the bottom end of the tank body 1 and is connected to the sealing cover. The second liquid discharge pipe 15 is rotatably connected to the tank body 1.

[0044] A heating sleeve 3 is fixedly mounted on the outer side of the tank body 1, and a heating chamber 12 for heating the outer wall of the tank body 1 is arranged inside the heating sleeve 3. The mounting frame 4 is mounted on the lower outer side of the heating sleeve 3, and legs 5 are vertically inserted at the four corners of the lower end surface of the mounting frame 4. A groove 14 is arranged in the center of the bottom end of the heating sleeve 3, and a second liquid discharge pipe 15 and a discharge pipe 16 are respectively connected to the bottom end of the tank body 1, and the second liquid discharge pipe 15 and the discharge pipe 16 are both located in the groove 14.

[0045] When using, Figure 1 , Figure 2 and Figure 3As shown, the phthalic acid raw material is added into the tank body 1 through the feed pipe, and the heating oil is introduced into the heating chamber 12 inside the heating sleeve 3 through the first liquid inlet pipe 11. After the heating oil fills the heating chamber 12, the heating oil is discharged from the first liquid discharge pipe 13. The heating oil contacts the outer wall of the tank body 1 and heats the phthalic acid raw material inside the tank body 1 by heat conduction.

[0046] The present invention also includes that the top end of the first connecting tube 8 is rotatably connected to the bottom end of the second liquid inlet tube 24 through a first connecting member 23, and the top end of the mounting shell 6 is also fixedly connected to a support member 25 for limiting the position of the second liquid inlet tube 24, and the top end of the support member 25 is fixedly sleeved on the outside of the first connecting tube 8.

[0047] A positioning ring 18 for supporting the first gear 19 is fixedly sleeved on the upper outer side of the first connecting tube 8, and the positioning ring 18 is located below the first gear 19. A positioning plate 22 is fixedly embedded in the center of the lower end surface of the second gear 20, and the bottom end of the rotating shaft 21 passes through the center of the second gear 20 and is fixedly inserted in the center of the upper end surface of the positioning plate 22.

[0048] The present invention also includes that the first gear 19 is provided with a first latching tooth 35 on the outside, the second gear 20 is provided with a second latching tooth 36 matched with the first latching tooth 35 on the outside, the first latching tooth 35 and the second latching tooth 36 are provided with a plurality of each, and the first latching tooth 35 and the second latching tooth 36 are arranged alternately.

[0049] A plurality of first latch teeth 35 are arranged in a circular array with the center of the first gear 19 as the center;

[0050] A plurality of second latch teeth 36 are arranged in a circular array with the center of the second gear 20 as the center;

[0051] The first latching teeth 35 and the second latching teeth 36 are meshed, so that the second gear 20 can drive the first gear 19 to rotate, and the first connecting pipe 8, the second liquid inlet pipe 24, the stirring member 9, the second connecting pipe 10 and the second liquid discharge pipe 15 are connected.

[0052] The present invention also includes that a baffle 29 with a circular ring structure is fixedly sleeved on the lower outer side of the second connecting tube 10, a threaded groove 37 is provided in the mounting seat 30, the mounting seat 30 is threadedly connected to the lower outer side of the second connecting tube 10, the bottom end of the first connecting tube 8 passes through the top end of the stirring member 9 and is fixedly connected to the baffle 33, and the top end of the second connecting tube 10 passes through the bottom end of the stirring member 9 and is fixedly connected to the baffle 33.

[0053] When using, Figure 2 , Figure 3As shown, the heating oil is added into the first connecting pipe 8 through the second liquid inlet pipe 24 and the first connecting member 23, and enters the second channel 28 in the stirring member 9 through the first channel 17 and the through hole 27 in the first connecting pipe 8. The heating oil fills the stirring member 9 and the connecting rod 34. The heating oil heats the phthalic acid raw material in the tank body 1 by heat conduction, and the heating oil in the stirring member 9 is discharged through the second connecting pipe 10 and the second liquid discharge pipe 15.

[0054] The present invention also includes that the first connecting tube 8 and the second connecting tube 10 are provided with a first channel 17, and the first connecting tube 8 and the second connecting tube 10 are provided with through holes 27 connected to the first channel 17 on both sides of one end of the stirring member 9, and the stirring member 9 is provided with a second channel 28 connected to the through hole 27, and the first channel 17 and the second channel 28 are connected, thereby facilitating the injection of heating oil.

[0055] The present invention also includes that a first liquid inlet pipe 11 is vertically plugged into the upper part of one side of the heating sleeve 3, a first liquid discharge pipe 13 is fixedly plugged into the bottom end of the heating sleeve 3, the discharge pipe 16 is an L-shaped structure, two discharge pipes 16 are arranged opposite to each other, and the second liquid discharge pipe 15 is located between the two groups of discharge pipes 16;

[0056] When in use, the motor 26 drives the second gear 20 to rotate through the rotating shaft 21, the second gear 20 is meshed with the first gear 19, the first gear 19 can drive the first connecting pipe 8 to rotate, the first connecting pipe 8 can drive the stirring mechanism 7 to rotate, the stirring member 9 and the stirring rod 31 can mix and stir the terephthalic acid raw material, and the stirring member 9 and the connecting rod 34 are in contact with the terephthalic acid raw material during rotation, so that the terephthalic acid raw material is heated evenly.

[0057] A production process of a terephthalic acid processing heat treatment device comprises the following steps:

[0058] S1, adding phthalic acid raw material into the tank body 1 through the feed pipe, introducing heating oil into the heating chamber 12 inside the heating jacket 3 through the first liquid inlet pipe 11, after the heating oil fills the heating chamber 12, the heating oil is discharged from the first liquid discharge pipe 13, and the heating oil contacts the outer wall of the tank body 1, and heats the phthalic acid raw material inside the tank body 1 by heat conduction;

[0059] S2, at the same time, heating oil is added into the first connecting pipe 8 from the second liquid inlet pipe 24 and the first connecting member 23, and enters into the second channel 28 in the stirring member 9 through the first channel 17 and the through hole 27 in the first connecting pipe 8, and the heating oil fills the stirring member 9 and the connecting rod 34. The heating oil heats the phthalic acid raw material in the tank body 1 by heat conduction, and the heating oil in the stirring member 9 is discharged through the second connecting pipe 10 and the second liquid discharge pipe 15;

[0060] S3. At the same time, the motor 26 is started. The motor 26 drives the second gear 20 to rotate through the rotating shaft 21. The second gear 20 is meshed with the first gear 19. The first gear 19 can drive the first connecting pipe 8 to rotate. The first connecting pipe 8 can drive the stirring mechanism 7 to rotate. The stirring member 9 and the stirring rod 31 can mix and stir the terephthalic acid raw material. The stirring member 9 and the connecting rod 34 are in contact with the terephthalic acid raw material during rotation, so that the terephthalic acid raw material is heated evenly.

[0061] When the present invention is used, the phthalic acid raw material is added into the tank body 1 through the feed pipe, the heating oil is added into the first connecting pipe 8 through the second liquid inlet pipe 24 and the first connecting member 23, and enters the second channel 28 in the stirring member 9 through the first channel 17 and the through hole 27 in the first connecting pipe 8, the heating oil fills the stirring member 9 and the connecting rod 34, the heating oil heats the phthalic acid raw material in the tank body 1 by heat conduction, and the heating oil in the stirring member 9 is discharged through the second connecting pipe 10 and the second liquid discharge pipe 15;

[0062] The heating oil is introduced into the heating chamber 12 inside the heating jacket 3 through the first liquid inlet pipe 11. After the heating oil fills the heating chamber 12, the heating oil is discharged from the first liquid discharge pipe 13. The heating oil contacts the outer wall of the tank body 1 and heats the phthalic acid raw material inside the tank body 1 by heat conduction.

[0063] At the same time, the motor 26 is started, and the motor 26 drives the second gear 20 to rotate through the rotating shaft 21. The second gear 20 is meshed with the first gear 19. The first gear 19 can drive the first connecting pipe 8 to rotate. The first connecting pipe 8 can drive the stirring mechanism 7 to rotate. The stirring member 9 and the stirring rod 31 can mix and stir the terephthalic acid raw material. The stirring member 9 and the connecting rod 34 are in contact with the terephthalic acid raw material during rotation, so that the terephthalic acid raw material is heated evenly.

[0064] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A terephthalic acid processing heat treatment device, It is characterized in that The invention comprises a tank body (1), a top cover (2), a heating sleeve (3), a mounting frame (4) and a leg (5), wherein the top of the tank body (1) is connected to the top cover (2), a first connecting pipe (8) is rotatably mounted at the center of the top of the top cover (2), a mounting shell (6) is buckled at the top of the top cover (2), the first connecting pipe (8) is located in the mounting shell (6), and a first gear (19), a second gear (20), a rotating shaft (21), a positioning plate (22), a first connecting member ( 23), a second liquid inlet pipe (24) and a positioning ring (18), the first gear (19) is fixedly sleeved on the upper outer side of the first connecting pipe (8), the first gear (19) is meshed with the second gear (20), the top end of the mounting shell (6) is located directly above the second gear (20) and a motor (26) is fixedly mounted thereon, the second gear (20) is fixedly sleeved on the lower outer side of the rotating shaft (21), the top end of the rotating shaft (21) passes through the mounting shell (6) and is connected to the output shaft at the bottom end of the motor (26); A stirring mechanism (7) is provided inside the tank body (1); the bottom end of the first connecting pipe (8) passes through the top cover (2) and is connected to the stirring mechanism (7); the stirring mechanism (7) is rotatably connected to the inner wall of the bottom end of the tank body (1); The stirring mechanism (7) comprises a stirring member (9), a second connecting pipe (10), a second liquid discharge pipe (15), a mounting seat (30), a stirring rod (31) and a second connecting member (32); the stirring member (9) is a vertically arranged rectangular frame structure; a connecting rod (34) is horizontally and vertically connected to the center of the stirring member (9); the center of the top end of the stirring member (9) is connected to the bottom end of the first connecting pipe (8); the center of the bottom end of the stirring member (9) is connected to the top end of the second connecting pipe (10); the lower part of the second connecting pipe (10) is threadedly connected to the mounting seat (30); stirring rods (31) are fixedly welded on both sides of the mounting seat (30); the bottom end of the second connecting pipe (10) is connected to the top end of the second liquid discharge pipe (15) through the second connecting member (32); the bottom end of the second liquid discharge pipe (15) passes through the inner wall of the bottom end of the tank body (1) and is connected to the sealing cover; the second liquid discharge pipe (15) is rotatably connected to the tank body (1); A heating sleeve (3) is fixedly mounted on the outer side of the tank body (1), and a heating chamber (12) for heating the outer wall of the tank body (1) is arranged inside the heating sleeve (3); the mounting frame (4) is mounted on the lower outer side of the heating sleeve (3), and legs (5) are vertically inserted at the four corners of the lower end surface of the mounting frame (4); a groove (14) is arranged at the center of the bottom end of the heating sleeve (3), and a second liquid discharge pipe (15) and a discharge pipe (16) are respectively connected to the bottom end of the tank body (1), and the second liquid discharge pipe (15) and the discharge pipe (16) are both located in the groove (14).

2. A terephthalic acid processing heat treatment device according to claim 1, It is characterized in that The top end of the first connecting tube (8) is rotatably connected to the bottom end of the second liquid inlet tube (24) via a first connecting member (23); the top end of the mounting shell (6) is also fixedly connected to a support member (25) for defining the position of the second liquid inlet tube (24); the top end of the support member (25) is fixedly sleeved on the outside of the first connecting tube (8).

3. A terephthalic acid processing heat treatment device according to claim 1, It is characterized in that A positioning ring (18) for supporting the first gear (19) is fixedly sleeved on the upper outer side of the first connecting tube (8), and the positioning ring (18) is located below the first gear (19). A positioning plate (22) is fixedly inlaid at the center of the lower end surface of the second gear (20), and the bottom end of the rotating shaft (21) passes through the center of the second gear (20) and is fixedly inserted at the center of the upper end surface of the positioning plate (22).

4. A terephthalic acid processing heat treatment device according to claim 3, It is characterized in that A first latching tooth (35) is provided on the outer side of the first gear (19), and a second latching tooth (36) matched with the first latching tooth (35) is provided on the outer side of the second gear (20). A plurality of the first latching teeth (35) and a plurality of the second latching teeth (36) are provided, and the first latching teeth (35) and the second latching teeth (36) are arranged alternately.

5. A terephthalic acid processing heat treatment device according to claim 1, It is characterized in that A baffle (29) with an annular structure is fixedly sleeved on the lower outer portion of the second connecting tube (10); a thread groove (37) is provided in the mounting seat (30); the mounting seat (30) is threadedly connected to the lower outer portion of the second connecting tube (10); the bottom end of the first connecting tube (8) passes through the top end of the stirring member (9) and is fixedly connected to the baffle (33); and the top end of the second connecting tube (10) passes through the bottom end of the stirring member (9) and is fixedly connected to the baffle (33).

6. A terephthalic acid processing heat treatment device according to claim 5, It is characterized in that The first connecting tube (8) and the second connecting tube (10) are provided with a first channel (17), and both sides of the first connecting tube (8) and the second connecting tube (10) located at one end of the stirring member (9) are provided with through holes (27) connected to the first channel (17), and the stirring member (9) is provided with a second channel (28) connected to the through hole (27).

7. A terephthalic acid processing heat treatment device according to claim 1, It is characterized in that A first liquid inlet pipe (11) is vertically inserted into the upper part of one side of the heating sleeve (3), and a first liquid discharge pipe (13) is also fixedly inserted into the bottom end of the heating sleeve (3). The discharge pipe (16) is an L-shaped structure, and two discharge pipes (16) are arranged opposite to each other. The second liquid discharge pipe (15) is located between the two groups of discharge pipes (16).

8. A production process for a terephthalic acid processing heat treatment device according to any one of claims 1 to 7, It is characterized in that The steps include: S1, adding phthalic acid raw material into the tank body (1) through the feed pipe, introducing heating oil into the heating chamber (12) inside the heating jacket (3) through the first liquid inlet pipe (11), and after the heating oil fills the heating chamber (12), the heating oil is discharged from the first liquid discharge pipe (13), and the heating oil contacts the outer wall of the tank body (1), and heats the phthalic acid raw material inside the tank body (1) by heat conduction; S2, simultaneously, heating oil is added into the first connecting pipe (8) from the second liquid inlet pipe (24) and the first connecting member (23), and enters into the second channel (28) in the stirring member (9) through the first channel (17) and the through hole (27) in the first connecting pipe (8), the heating oil fills the stirring member (9) and the connecting rod (34), the heating oil heats the phthalic acid raw material in the tank body (1) by heat conduction, and the heating oil in the stirring member (9) is discharged through the second connecting pipe (10) and the second liquid discharge pipe (15); S3. At the same time, the motor (26) is started. The motor (26) drives the second gear (20) to rotate via the rotating shaft (21). The second gear (20) is meshed with the first gear (19). The first gear (19) can drive the first connecting pipe (8) to rotate. The first connecting pipe (8) can drive the stirring mechanism (7) to rotate. The stirring member (9) and the stirring rod (31) can mix and stir the terephthalic acid raw material. The stirring member (9) and the connecting rod (34) are in contact with the terephthalic acid raw material during rotation, so that the terephthalic acid raw material is heated evenly.

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