A carbon nine aromatic hydrocarbon multi-stage reflux rectification tank

Abstract

The utility model relates to carbon nine aromatic hydrocarbon technical field discloses a kind of carbon nine aromatic hydrocarbon multistage reflux rectifying tank, including tank body, the conical top is fixedly connected with the tank body top, the conical top top is fixedly connected with condensing tank and is penetrated, the condensing tank one end is penetrated and is screwed with collection tank, the tank body inner wall bottom is fixedly connected with lower distillation kettle, the tank body inner wall center position is fixedly connected with two connecting rods, two the connecting rod between fixedly connected with upper distillation kettle, the lower distillation kettle and the heating copper pipe that is spirally wound are arranged in upper distillation kettle wall thickness, the lower distillation kettle top is fixedly connected with second guide plate, in the utility model, controller controls heating copper pipe to be electrified and heat, the raw material mixture in lower distillation kettle is distilled, evaporated aromatic hydrocarbon molecule rises, very few molecules pass between with processing cover, most molecules will pass from processing cover inside.

Description

Technical Field

[0001] This utility model relates to the field of C9 aromatics technology, specifically a C9 aromatics multi-stage reflux distillation tank. Background Technology

[0002] C9 heavy aromatics refer to mixed aromatics with a molecular weight greater than xylene. They are mainly derived from reformed heavy aromatics, cracked gasoline heavy aromatics, and coal tar. They are a type of mixed aromatics with C9 aromatics as the main component.

[0003] Existing aromatic distillation technology is a process for separating and purifying aromatic hydrocarbons. It is mainly used to separate and extract aromatic hydrocarbons, such as benzene, toluene, and xylene, from petroleum and coal tar. The aromatic distillation process generally involves heating the raw material mixture to a suitable temperature to evaporate the aromatic hydrocarbon molecules. The heated mixture is then introduced into a distillation column for distillation. The evaporated aromatic hydrocarbon molecules rise to the top of the column, while the heavier substances sink to the bottom.

[0004] However, in existing distillation processes, when a large amount of aromatic molecule vapor is emitted upwards, it often carries some unreacted aromatic substances or some volatile catalytic solvents. Therefore, when the aromatic molecule vapor is cooled and liquefied in the subsequent process, a small amount of impurities are still present in the resulting liquid, which leads to poor distillation effect and fails to meet the rectification standard due to low purity. To address the above problems, a C9 aromatic multi-stage reflux distillation tank is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage reflux distillation tank for C9 aromatics, which solves the problem in the prior art that when steam is cooled and liquefied, the resulting liquid still contains a small amount of impurities, leading to poor distillation effect and failure to meet distillation standards due to low purity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a C9 aromatics multi-stage reflux distillation tank, comprising a tank body, a conical top fixedly connected to the top of the tank body, a condenser tank being fixedly connected through and to the top of the conical top, a collection tank being threadedly connected to one end of the condenser tank, a lower distillation pot fixedly connected to the bottom of the inner wall of the tank body, two connecting rods fixedly connected to the center of the inner wall of the tank body, an upper distillation pot fixedly connected between the two connecting rods, and spirally wound heating copper tubes arranged within the walls of the lower and upper distillation pots. A second guide plate is fixedly connected to the top of the lower distillation pot, a processing hood is fixedly connected to the top of the upper distillation pot, a first guide plate is fixedly connected to the top of the processing hood, a threaded condenser tube is provided on the inner ring of the condenser, one end of the threaded condenser tube is passed through and fixedly connected to a spiral conical tube, the other end of the spiral conical tube is fixedly connected to the tank body, and the spiral conical tube passes through and extends to one side of the tank body. A branch pipe is passed through and fixedly connected to one side of the outer ring of the spiral conical tube, a collection tank is threadedly connected to one end of the condenser, and a mixing component is provided at the bottom of the tank body.

[0007] By adopting the above technical solution, the controller controls the heating copper tube to be energized for heating, and the raw material mixture inside the lower distillation pot is distilled. The evaporated aromatic molecules rise, and most of the molecules pass through the inside of the processing hood. At the same time, an external water pump is connected to a threaded condenser to deliver cold water into the threaded condenser, the spiral conical tube, and the processing hood. Some aromatic molecules in contact with the processing hood condense and enter the upper distillation pot for re-distillation. Some aromatic molecules continue to rise, and a very small number of aromatic molecules pass between the baffle and the processing hood. These aromatic molecules pass through the spiral conical tube, where they are condensed.

[0008] As a further description of the above technical solution: the mixing component includes a base plate, which is fixedly connected to the tank body. A motor is fixedly connected to the bottom of the base plate. A large gear is passed through and fixedly connected to the output end of the motor. A small gear is meshed with the outer ring of the large gear. A first stirring rod is passed through and fixedly connected to the top of the small gear. A second stirring rod is passed through and fixedly connected to the top of the large gear. The tops of both the second stirring rod and the first stirring rod pass through the upper distillation pot and are fixedly connected to a third stirring rod.

[0009] By adopting the above technical solution, the mixing component stirs and mixes the input raw material mixture, thereby improving the distillation effect.

[0010] As a further description of the above technical solution: the other end of the threaded condenser tube is fixedly connected to a condenser tank, and the threaded condenser tube passes through and extends to one side of the condenser tank.

[0011] By adopting the above technical solution, the other end of the threaded condenser tube is used to drain the used cold water.

[0012] As a further description of the above technical solution: the inner wall of the processing hood is provided with branch pipes, and each branch pipe has a solenoid valve installed at one end.

[0013] By adopting the above technical solution, cold water can enter the treatment hood by opening the solenoid valve.

[0014] As a further description of the above technical solution: a liquid level sensor is provided on one side of the outer wall of the collection tank.

[0015] By adopting the above technical solution, the liquid level sensor detects the liquid level in the collection tank.

[0016] As a further description of the above technical solution: a connecting plate is fixedly connected to the top of the inner wall of the base plate, and a first stirring rod and a second stirring rod are rotatably connected through one side of the connecting plate.

[0017] By adopting the above technical solution, the materials are stirred and mixed when the first stirring rod and the second stirring rod rotate.

[0018] As a further description of the above technical solution: an observation window is provided on one side of the outer wall of the tank, two temperature sensors are provided on one side of the outer wall of the tank, two support plates are fixedly connected to the bottom of the tank, and two blocks are fixedly connected to the top of the inner wall of the tank.

[0019] By adopting the above technical solution, the baffle and the treatment cover facilitate the entry of condensed water droplets into the lower distillation pot.

[0020] As a further description of the above technical solution: two conveying pipes are connected through and fixedly connected to one side of the outer wall of the lower distillation pot, a conveying pipe is connected through and fixedly connected to one side of the outer wall of the upper distillation pot, and a conveying pipe is connected through and fixedly connected to one side of the outer wall of the processing hood. A solenoid valve is installed at one end of each conveying pipe.

[0021] By adopting the above technical solution, the input and output of materials can be conveniently controlled by the solenoid valve through the conveying pipe.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a C9 aromatics multi-stage reflux distillation tank, which consists of a condenser, a spiral conical tube, a treatment hood, an upper distillation pot, and a heating copper tube. A controller controls the heating copper tube to be energized and heated, distilling the raw material mixture inside the lower distillation pot. The evaporated aromatic molecules rise, while most molecules pass through the treatment hood. Simultaneously, an external water pump connected to a threaded condenser pipe delivers cold water into the threaded condenser pipe, spiral conical tube, and treatment hood. Some aromatic molecules in contact with the treatment hood condense and flow into the upper distillation pot for further distillation. A small number of aromatic molecules continue to rise, and a very small number pass between the baffle and the treatment hood, passing through the spiral conical tube. The spiral conical tube condenses the aromatic molecules, turning them into water, which flows downwards along the conical shape of the spiral conical tube into the upper distillation pot for further distillation. Finally, the water enters the condenser for condensation and collection, achieving multi-stage distillation and improving distillation efficiency.

[0023] This utility model provides a multi-stage reflux distillation tank for C9 aromatics. It comprises a motor, a large gear, a small gear, a first stirring rod, a second stirring rod, and a third stirring rod. A controller operates the motor, which drives the large gear to rotate, thereby rotating the connected second stirring rod. The small gear meshes with the large gear, achieving its own rotation, which in turn drives the first stirring rod to rotate, thus stirring the interior of the lower distillation pot. Then, the second and first stirring rods drive the third stirring rod to rotate, which stirs the interior of the upper distillation pot, thereby improving the distillation efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is an exploded view of the base plate structure of this utility model.

[0025] In the diagram: 1. Tank body; 2. Condenser; 3. Collection tank; 4. Lower distillation pot; 5. Upper distillation pot; 6. Processing hood; 7. Spiral conical tube; 8. Branch pipe; 9. Heating copper tube; 10. Threaded condenser tube; 11. First guide plate; 12. Second guide plate; 13. Motor; 14. Base plate; 15. Conveying pipe; 16. Large gear; 17. Small gear; 18. First stirring rod; 19. Second stirring rod; 20. Third stirring rod; 21. Temperature sensor; 22. Liquid level sensor; 23. Solenoid valve; 24. Observation window; 25. Connecting plate; 26. Support plate; 27. Conical top; 28. Connecting rod; 29. ​​Stop block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0028] Combination Figure 1 This utility model discloses a C9 aromatics multi-stage reflux distillation tank, comprising a tank body 1, a conical top 27 fixedly connected to the top of the tank body 1, a condenser 2 connected through and fixedly connected to the top of the conical top 27, a collection tank 3 connected through and threaded to one end of the condenser 2, a lower distillation pot 4 fixedly connected to the bottom of the inner wall of the tank body 1, a threaded condenser pipe 10 fixedly connected to the other end of the condenser 2, and the threaded condenser pipe 10 extending through and to one side of the condenser 2, and an external water pump connected to the threaded condenser pipe 10, which can sequentially deliver cold water to the threaded condenser pipe 10, the spiral conical pipe 7, and the treatment hood 6. Simultaneously, the solenoid valve 23 on the branch pipe 8 needs to be opened to deliver water to the treatment hood 6. The inner wall of the treatment hood 6 is provided with branch pipes 8, each branch pipe 8 having a solenoid valve 23 connected through and to one end. A liquid collection tank 3 is provided on one side of its outer wall. Level sensor 22 detects the liquid level, which is received by signal receiver (not shown in the figure) and transmitted to alarm (not shown in the figure) for reminder. Observation window 24 is provided on one side of the outer wall of tank 1 to facilitate observation of the internal condition of tank 1. Two temperature sensors 21 are provided on one side of the outer wall of tank 1. Two support plates 26 are fixedly connected to the bottom of tank 1. Two blocks 29 are fixedly connected to the top of the inner wall of tank 1. Two conveying pipes 15 are connected through and fixedly connected to one side of the outer wall of lower distillation pot 4. A conveying pipe 15 is connected through and fixedly connected to one side of the outer wall of upper distillation pot 5. The conveying pipes 15 can be used for conveying and output, and are controlled by solenoid valve 23. A conveying pipe 15 is connected through and fixedly connected to one side of the outer wall of treatment hood 6. Solenoid valve 23 is provided at one end of each conveying pipe 15.

[0029] Combination Figure 1 and Figure 2Two connecting rods 28 are fixedly connected to the center of the inner wall of tank 1. An upper distillation pot 5 is fixedly connected between the two connecting rods 28. Heating copper tubes 9 are spirally wound inside the walls of the lower distillation pot 4 and the upper distillation pot 5. The heat generated by the heating head (not shown in the figure) is efficiently conducted to the heating copper tubes 9, thus raising the temperature of the heating copper tubes 9. The temperature is then detected by a temperature sensor 21. A second guide plate 12 is fixedly connected to the top of the lower distillation pot 4, and a processing hood 6 is fixedly connected to the top of the upper distillation pot 5. A first guide plate 11 is fixedly connected to the top of the processing hood 6. When aromatic molecules rise, when they encounter the processing hood 6 and the spiral conical tube 7, the condensed water is drawn by the first guide plate. 11. A guide tube 10 is provided on the inner ring of the condenser tank 2 to facilitate entry into the upper distillation pot 5. One end of the threaded condenser tube 10 is connected to a spiral conical tube 7 through and fixedly connected to it. The other end of the spiral conical tube 7 is fixedly connected to the tank body 1. The other end of the spiral conical tube 7 is used to discharge the used cold water. The spiral conical tube 7 is a conical thread type to facilitate the entry of the condensed water into the upper distillation pot 5. The spiral conical tube 7 extends through and extends to one side of the tank body 1. A branch pipe 8 is connected through and fixedly connected to one side of the outer ring of the spiral conical tube 7. One end of the condenser tank 2 is threadedly connected to a collection tank 3. A rubber ring (not shown in the figure) is placed between the collection tank 3 and the tank 2 to increase its sealing. A mixing component is provided at the bottom of the body 1.

[0030] Combination Figure 2 and Figure 3 The mixing component includes a base plate 14, which is fixedly connected to the tank 1. A motor 13 is fixedly connected to the bottom of the base plate 14. When the controller (not shown in the figure) controls the motor 13 to work, it can drive the large gear 16 to rotate and the small gear 17 to rotate. The output end of the motor 13 passes through and is fixedly connected to the large gear 16. The outer ring of the large gear 16 is meshed with the evenly distributed small gears 17. The top of the small gear 17 passes through and is fixedly connected to the first stirring rod 18. The top of the large gear 16 passes through and is fixedly connected to the second stirring rod 19. When the second stirring rod 19 and the first stirring rod 18 rotate, they stir the material inside the lower distillation pot 4. The tops of the second stirring rod 19 and the first stirring rod 18 both pass through the upper distillation pot 5 and are fixedly connected to the third stirring rod 20. When the third stirring rod 20 rotates, it can stir the material collected in the upper distillation pot 5. A connecting plate 25 is fixedly connected to the top of the inner wall of the base plate 14. The first stirring rod 18 and the second stirring rod 19 are passed through and rotatably connected to one side of the connecting plate 25.

[0031] Working principle: During use, the raw material mixture is added through the conveying pipe 15 above the lower distillation pot 4. Then, the controller (not shown in the figure) controls the motor 13 to work, driving the large gear 16 to rotate and the small gear 17 to rotate, thereby driving the first stirring rod 18 and the second stirring rod 19 to rotate, stirring the raw material mixture. At the same time, the second stirring rod 19 drives the third stirring rod 20 to rotate, stirring the inside of the upper distillation pot 5, improving the mixing effect and thus improving the distillation effect. Then, the controller controls the heating copper pipe 9 to be energized for heating, and the temperature sensor 21 detects the temperature. When the lower distillation pot 4 is heated, the raw material mixture inside distills, and the generated aromatic molecules rise. Then, a very small number of molecules pass through the gap between the baffle 29 and the processing hood 6. However, most aromatic molecules will enter the processing hood 6. At the same time, an external water pump connected to the threaded condenser 10 delivers cold water to the threaded condenser 10, the spiral conical tube 7, and the processing hood 6. When the rising aromatic molecules come into contact with the processing hood 6, they condense into water and flow into the upper distillation pot 5, with very little entering the lower distillation pot 4. Then, some aromatic molecules continue to rise and pass through the spiral conical tube 7. When passing through the spiral conical tube 7, they condense into water droplets and fall into the upper distillation pot 5. Distillation is carried out again in the upper distillation pot 5. The distilled aromatic molecules rise and enter the condenser tank 2 along with the subsequent aromatic molecules. The threaded condenser 10 condenses and collects in the collection tank 3. The liquid level sensor 22 detects the liquid level. By rotating the collection tank 3, the aromatic molecules can be removed.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A C9 aromatics multi-stage reflux distillation tank, comprising a tank body (1), characterized in that: A conical top (27) is fixedly connected to the top of the tank (1). A condenser (2) is fixedly connected through the top of the conical top (27). A collection tank (3) is threaded through one end of the condenser (2). A lower distillation pot (4) is fixedly connected to the bottom of the inner wall of the tank (1). Two connecting rods (28) are fixedly connected at the center of the inner wall of the tank (1). An upper distillation pot (5) is fixedly connected between the two connecting rods (28). Heated copper tubes (9) are spirally wound within the walls of the lower distillation pot (4) and the upper distillation pot (5). A second guide plate (12) is fixedly connected to the top of the lower distillation pot (4). The top of the distillation pot (5) is fixedly connected to a processing cover (6), and the top of the processing cover (6) is fixedly connected to a first guide plate (11). The inner ring of the condenser (2) is provided with a threaded condenser tube (10). One end of the threaded condenser tube (10) is connected to a spiral conical tube (7) through and fixedly connected to it. The other end of the spiral conical tube (7) is fixedly connected to a tank body (1). The spiral conical tube (7) extends through and to one side of the tank body (1). One side of the outer ring of the spiral conical tube (7) is connected to a branch tube (8). One end of the condenser (2) is threadedly connected to a collection tank (3). The bottom of the tank body (1) is provided with a mixing component.

2. The C9 aromatics multi-stage reflux distillation tank according to claim 1, characterized in that: The mixing assembly includes a base plate (14), which is fixedly connected to the tank (1). A motor (13) is fixedly connected to the bottom of the base plate (14). A large gear (16) is fixedly connected to the output end of the motor (13). A small gear (17) is evenly distributed and meshed on the outer ring of the large gear (16). A first stirring rod (18) is fixedly connected to the top of the small gear (17). A second stirring rod (19) is fixedly connected to the top of the large gear (16). The tops of the second stirring rod (19) and the first stirring rod (18) both pass through the upper distillation pot (5) and are fixedly connected to a third stirring rod (20).

3. The C9 aromatics multi-stage reflux distillation tank according to claim 1, characterized in that: The other end of the threaded condenser tube (10) is fixedly connected to the condenser tank (2), and the threaded condenser tube (10) passes through and extends to one side of the condenser tank (2).

4. The C9 aromatics multi-stage reflux distillation tank according to claim 1, characterized in that: The inner wall of the processing cover (6) is provided with a branch pipe (8), and a solenoid valve (23) is provided at one end of each branch pipe (8).

5. The C9 aromatics multi-stage reflux distillation tank according to claim 1, characterized in that: A liquid level sensor (22) is installed on one side of the outer wall of the collection tank (3).

6. The C9 aromatics multi-stage reflux distillation tank according to claim 2, characterized in that: A connecting plate (25) is fixedly connected to the top of the inner wall of the base plate (14), and a first stirring rod (18) and a second stirring rod (19) are connected through and rotatably on one side of the connecting plate (25).

7. The C9 aromatics multi-stage reflux distillation tank according to claim 1, characterized in that: An observation window (24) is provided on one side of the outer wall of the tank (1), two temperature sensors (21) are provided on one side of the outer wall of the tank (1), two support plates (26) are fixedly connected to the bottom of the tank (1), and two blocks (29) are fixedly connected to the top of the inner wall of the tank (1).

8. A C9 aromatics multi-stage reflux distillation tank according to claim 1, characterized in that: Two conveying pipes (15) are connected through and fixedly connected to one side of the outer wall of the lower distillation pot (4), and a conveying pipe (15) is connected through and fixedly connected to one side of the outer wall of the upper distillation pot (5). A conveying pipe (15) is connected through and fixedly connected to one side of the outer wall of the processing hood (6). A solenoid valve (23) is installed at one end of each conveying pipe (15).

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