Equipment for preparing spinnable mesophase pitch through hydrogen catalysis-hydrogen supply treatment of coal pitch

Abstract

The utility model relates to the technical field of material preparation, and discloses equipment for preparing spinnable mesophase pitch through hydrogen catalysis-hydrogen supply treatment of coal pitch, which comprises a box body, a feeding pipe is arranged at the top of the box body, a discharging pipe is arranged at the bottom of the box body, a motor is fixedly arranged at the top of the box body, and a motor is arranged at the bottom of the box body. A motor is arranged in the box body, a first rotating pipe is fixedly arranged at the output end of the motor, a second rotating pipe is slidably arranged at the lower end of the first rotating pipe, a plurality of uniformly distributed stirrers are fixedly arranged on the pipe wall of the second rotating pipe, and a lifting mechanism connected with the second rotating pipe is arranged at the top of the box body; hydrogen production equipment is fixedly arranged at the top of the box body, a hollow disc is fixedly arranged on the inner wall of the top of the box body, and the pipe wall of the first rotating pipe rotationally penetrates through the interior of the hollow disc. According to the utility model, the primary hydrogenated pitch can be in rapid and uniform contact with the hydrogen donor, and the efficiency of manufacturing spinnable mesophase pitch is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material preparation, in particular to a device for preparing spinnable mesophase asphalt by hydrogen catalysis-hydrogen supply treatment of coal tar pitch. Background Art

[0002] The regulation of the molecular structure and composition of raw asphalt is a key factor affecting the preparation of mesophase asphalt, which directly affects the softening point, spinnability and mesophase content of mesophase asphalt. Generally, raw asphalt is adjusted by methods such as hydrogenation, co-carbonization and catalytic modification to obtain a more ideal molecular structure and composition, so as to promote its formation and conversion into high-quality mesophase asphalt. (1) Hydrogen catalysis refers to the process of hydrogenation modification of raw asphalt under high temperature and hydrogen conditions. (2) Hydrogen donor modification refers to the hydrogenation modification of raw asphalt through reactions such as hydrogen transfer under high temperature conditions. Due to the complex structure and poor performance of coal tar pitch components, the preparation and performance improvement of coal tar pitch-based mesophase asphalt are subject to many technical limitations, resulting in a slow industrialization process.

[0003] For example, patent number CN110699107B proposes a method for preparing spinnable mesophase asphalt by hydrogen catalysis-hydrogen supply treatment of coal tar pitch, and the steps are as follows: (1) adding an additive to coal tar pitch, promoting the in-situ formation of a dispersed catalyst by native inorganic minerals under high-temperature hydrogen conditions, subjecting the coal tar pitch to hydrogen catalysis treatment, and removing low-boiling point fractions by vacuum distillation after the reaction to obtain a primary hydrogenated asphalt; (2) adding a hydrogen donor to the primary hydrogenated asphalt, subjecting the primary hydrogenated asphalt to hydrogen catalysis-hydrogen supply coordinated treatment under high-temperature hydrogen conditions, and removing low-boiling point fractions by vacuum distillation to obtain a secondary hydrogenated asphalt; (3) removing quinoline insolubles from the secondary hydrogenated asphalt to obtain refined hydrogenated asphalt; (4) subjecting the refined hydrogenated asphalt to a thermal polymerization reaction to obtain a spinnable mesophase asphalt.

[0004] In the above scheme, a certain mass ratio of hydrogen donor and primary hydrogenated asphalt is added to a stirred reactor, and the asphalt is subjected to hydrogen catalysis-hydrogenation synergistic treatment under high temperature hydrogen conditions. However, it is found in actual use that if the hydrogen donor cannot be evenly and quickly introduced into the interior of the primary hydrogenated asphalt, the production efficiency of the spinnable mesophase asphalt will be reduced. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that if the hydrogen donor cannot be evenly and quickly introduced into the interior of the primary hydrogenated asphalt, the production efficiency of the spinnable mesophase asphalt will be reduced, and a device for preparing the spinnable mesophase asphalt by hydrogen catalysis-hydrogen supply treatment of coal tar pitch is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for preparing spinnable mesophase asphalt by hydrogen catalysis and hydrogen supply treatment of coal tar pitch, comprising a box body, a feed pipe is provided on the top of the box body, a discharge pipe is provided on the bottom of the box body, a motor is fixedly provided on the top of the box body, a first rotating tube is fixedly provided on the output end of the motor, a second rotating tube is slidably provided on the lower end of the first rotating tube, a plurality of evenly distributed agitators are fixedly provided on the tube wall of the second rotating tube, and a lifting mechanism connected to the second rotating tube is provided on the top of the box body; a hydrogen production device is fixedly provided on the top of the box body, a hollow disk is fixedly provided on the top inner wall of the box body, the tube wall of the first rotating tube rotates and passes through the interior of the hollow disk, an air inlet pipe is fixedly provided on the output end of the hydrogen production device, and the end of the air inlet pipe is fixedly connected to the hollow disk, and a return air pipe is fixedly provided on the output end of the hydrogen production device, and the end of the return air pipe is fixedly connected to the side wall of the box body.

[0008] Preferably, the lifting mechanism includes a cylinder, a positioning plate is rotatably provided on the tube wall of the second rotating tube, sliding rods extending to the top of the box body are fixedly provided on both sides of the upper surface of the positioning plate, the cylinder is fixedly set on the top of the box body, and a top plate is fixedly provided at the end of the piston rod of the cylinder, and the upper end of the sliding rod is fixedly connected to the lower surface of the top plate.

[0009] Preferably, a sliding sealing sleeve slidably matched with the sliding rod is provided on the top of the box body.

[0010] Preferably, two positioning strips are symmetrically fixedly provided on the tube wall of the second rotating tube, and a positioning groove cooperating with the positioning strips is provided on the inner wall of the first rotating tube.

[0011] Preferably, an air inlet hole is provided on the tube wall of the first rotating tube and located inside the hollow disk, and a plurality of evenly distributed air outlet holes are provided on the tube wall of the second rotating tube.

[0012] Preferably, anti-blocking screens are fixedly provided inside the plurality of air outlet holes.

[0013] Preferably, a gas filter is fixedly provided on the wall of the air return pipe.

[0014] Preferably, a collecting hopper is fixedly provided on the bottom inner wall of the box body, and the discharge pipe is arranged in the middle of the collecting hopper.

[0015] Preferably, the agitator adopts a multi-blade structure.

[0016] Compared with the prior art, the utility model provides a device for preparing spinnable mesophase asphalt by hydrogen catalysis-hydrogen supply treatment of coal tar pitch, which has the following beneficial effects:

[0017] 1. The equipment for preparing spinnable mesophase asphalt by hydrogen catalysis-hydrogen supply treatment of coal tar pitch is provided with a motor, a first rotating tube, a second rotating tube, a stirrer, a hydrogen production equipment, a hollow disk, an air inlet pipe and an air return pipe. The motor can drive the first rotating tube and the second rotating tube to rotate synchronously, so that the stirrer rotates and stirs the material inside the box. At the same time, the hydrogen production equipment discharges the hydrogen supply agent and discharges it into the first rotating tube and the second rotating tube through the air inlet pipe, and finally discharges it into the material. The material can be quickly and evenly contacted with the hydrogen supply agent, thereby improving the efficiency of manufacturing the spinnable mesophase asphalt.

[0018] 2. The equipment for preparing spinnable mesophase asphalt by hydrogen catalysis and hydrogen supply treatment of coal tar pitch is provided with a cylinder, a positioning plate, a sliding rod and a top plate. When the cylinder is telescopic, it can push the second rotating tube downward or upward, so that the agitator and the air outlet are moved downward or upward, thereby improving the contact effect between the material and the hydrogen supply agent.

[0019] 3. The equipment for preparing spinnable mesophase asphalt by hydrogen catalysis and hydrogen supply treatment of coal tar pitch has a positioning bar and a positioning groove arranged between a first rotating tube and a second rotating tube. When the second rotating tube moves inside the first rotating tube, the positioning bar slides inside the positioning groove, thereby ensuring that the first rotating tube drives the second rotating tube to rotate together.

[0020] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can make the primary hydrogenated asphalt contact with the hydrogen supply agent quickly and evenly, thereby improving the efficiency of manufacturing the spinnable mesophase asphalt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a device for preparing spinnable mesophase pitch by hydrogen catalysis-hydrogen supply treatment of coal pitch proposed in the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the first rotating tube and the second rotating tube;

[0023] Figure 3 for Figure 1 Schematic diagram of the structure of the first rotating tube and the hollow disk.

[0024] In the figure: 1. box body; 2. feed pipe; 3. discharge pipe; 4. motor; 5. first rotating tube; 6. second rotating tube; 7. agitator; 8. hydrogen production equipment; 9. hollow plate; 10. air inlet pipe; 11. air return pipe; 12. cylinder; 13. positioning plate; 14. sliding rod; 15. top plate; 16. positioning strip; 17. air inlet hole; 18. air outlet hole; 19. gas filter; 20. collecting hopper. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] Reference Figure 1-2 , a device for preparing spinnable mesophase asphalt by hydrogen catalysis-hydrogen supply treatment of coal tar pitch, comprising a box body 1, a feed pipe 2 is provided on the top of the box body 1, a discharge pipe 3 is provided at the bottom of the box body 1, a collecting hopper 20 is fixedly provided on the inner wall of the bottom of the box body 1, and the discharge pipe 3 is arranged in the middle of the collecting hopper 20. The collecting hopper 20 can guide the materials to the position of the discharge pipe 3 to facilitate the discharge of the materials; a motor 4 is fixedly provided on the top of the box body 1, a first rotating tube 5 is fixedly provided at the output end of the motor 4, a second rotating tube 6 is slidably provided at the lower end of the first rotating tube 5, two positioning strips 16 are symmetrically fixedly provided on the tube wall of the second rotating tube 6, a positioning groove matching with the positioning strip 16 is opened on the inner wall of the first rotating tube 5, and when the second rotating tube 6 moves inside the first rotating tube 5, the positioning strip 15 is fixed in a fixed position. The internal sliding of the positioning groove can ensure that the first rotating tube 5 drives the second rotating tube 6 to rotate together; the tube wall of the second rotating tube 6 is fixedly provided with a plurality of evenly distributed agitators 7, and the agitator 7 adopts a multi-blade structure. The top of the box body 1 is provided with a lifting mechanism connected to the second rotating tube 6, and the lifting mechanism includes a cylinder 12. The tube wall of the second rotating tube 6 is rotatably provided with a positioning plate 13, and both sides of the upper surface of the positioning plate 13 are fixedly provided with a sliding rod 14 extending to the top of the box body 1. The cylinder 12 is fixedly set on the top of the box body 1, and the end of the piston rod of the cylinder 12 is fixedly provided with a top plate 15, and the upper end of the sliding rod 14 is fixedly connected to the lower surface of the top plate 15. The top of the box body 1 is provided with a sliding sealing sleeve that slides with the sliding rod 14 to increase the sliding sealing between the sliding rod 14 and the box body 1.

[0028] Example 2

[0029] Reference Figure 1 and 3A hydrogen production device 8 is fixedly provided on the top of the box body 1, a hollow disk 9 is fixedly provided on the top inner wall of the box body 1, the tube wall of the first rotating tube 5 rotates and passes through the interior of the hollow disk 9, an air inlet pipe 10 is fixedly provided on the output end of the hydrogen production device 8, and the end of the air inlet pipe 10 is fixedly connected to the hollow disk 9, a return air pipe 11 is fixedly provided on the output end of the hydrogen production device 8, and the end of the return air pipe 11 is fixedly connected to the side wall of the box body 1, and a gas filter 19 is fixedly provided on the tube wall of the return air pipe 11, and the gas filter 19 can filter the recovered hydrogen supply agent; an air inlet hole 17 is opened on the tube wall of the first rotating tube 5 and located inside the hollow disk 9, and a plurality of evenly distributed air outlet holes 18 are opened on the tube wall of the second rotating tube 6, and anti-blocking screens are fixedly provided inside the plurality of air outlet holes 18, and the anti-blocking screens can prevent the material from blocking the first rotating tube 5 and the second rotating tube 6, and the generated hydrogen supply agent enters the interior of the first rotating tube 5 and the second rotating tube 6 through the air inlet hole 17, and then is discharged into the interior of the material through the air outlet hole 18.

[0030] When in use, the motor 4 can drive the first rotating tube 5 and the second rotating tube 6 to rotate synchronously, so that the agitator 7 rotates and stirs the material inside the box 1. At the same time, the hydrogen production equipment 8 discharges the hydrogen supply agent and discharges it into the first rotating tube 5 and the second rotating tube 6 through the air inlet pipe 11, and finally discharges it into the material; when the cylinder 12 is in a telescopic action, it can push the second rotating tube 6 downward or upward, so that the agitator 7 and the air outlet 18 move downward or upward, thereby improving the contact effect between the material and the hydrogen supply agent, allowing the material to contact the hydrogen supply agent quickly and evenly, thereby improving the efficiency of manufacturing spinnable intermediate phase asphalt.

Claims

1. A device for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch, comprising a housing (1), characterized in that: A feeding pipe (2) is provided at the top of the box (1), a discharging pipe (3) is provided at the bottom of the box (1), a motor (4) is fixedly provided at the top of the box (1), a first rotating tube (5) is fixedly provided at the output end of the motor (4), a second rotating tube (6) is slidably provided at the lower end of the first rotating tube (5), a plurality of evenly distributed agitators (7) are fixedly provided on the tube wall of the second rotating tube (6), and a lifting mechanism connected to the second rotating tube (6) is provided at the top of the box (1); A hydrogen production device (8) is fixedly provided on the top of the box (1), a hollow disk (9) is fixedly provided on the inner wall of the top of the box (1), the tube wall of the first rotating tube (5) rotates and passes through the interior of the hollow disk (9), an air intake pipe (10) is fixedly provided on the output end of the hydrogen production device (8), and the end of the air intake pipe (10) is fixedly connected to the hollow disk (9), and a return air pipe (11) is fixedly provided on the output end of the hydrogen production device (8), and the end of the return air pipe (11) is fixedly connected to the side wall of the box (1).

2. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 1, characterized in that: The lifting mechanism comprises a cylinder (12), a positioning plate (13) is rotatably provided on the wall of the second rotating tube (6), sliding rods (14) extending to the top of the box body (1) are fixedly provided on both sides of the upper surface of the positioning plate (13), the cylinder (12) is fixedly arranged on the top of the box body (1), and a top plate (15) is fixedly provided at the end of the piston rod of the cylinder (12), and the upper end of the sliding rod (14) is fixedly connected to the lower surface of the top plate (15).

3. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 2, characterized in that: The top of the box body (1) is provided with a sliding sealing sleeve which is slidably matched with the sliding rod (14).

4. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 1, characterized in that: Two positioning strips (16) are symmetrically fixedly provided on the tube wall of the second rotating tube (6), and a positioning groove matching with the positioning strips (16) is provided on the inner wall of the first rotating tube (5).

5. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 1, characterized in that: An air inlet hole (17) is provided on the wall of the first rotating tube (5) and is located inside the hollow disk (9), and a plurality of evenly distributed air outlet holes (18) are provided on the wall of the second rotating tube (6).

6. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 5, characterized in that: Anti-blocking screens are fixedly arranged inside the plurality of air outlet holes (18).

7. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 1, characterized in that: A gas filter (19) is fixedly provided on the wall of the gas return pipe (11).

8. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal pitch according to claim 1, characterized in that: A collecting hopper (20) is fixedly provided on the inner wall of the bottom of the box body (1), and the discharge pipe (3) is arranged in the middle of the collecting hopper (20).

9. The equipment for preparing spinnable mesophase pitch by hydrogen catalysis and hydrogen supply treatment of coal tar pitch according to claim 1, characterized in that: The stirrer (7) adopts a multi-blade structure.

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