Toluene rectifier with uniform distillation function

Abstract

The toluene rectifier comprises a bottom plate, a distillation retort is arranged above the bottom plate, a plurality of first supporting legs are arranged on the outer wall of the lower end of the distillation retort, the bottom ends of the first supporting legs are fixedly connected with the top end of the bottom plate, and a heat exchange tank is arranged above the bottom plate on one side of the distillation retort. The outer wall of the lower end of the heat exchange tank is provided with a plurality of second supporting legs, the bottom ends of the second supporting legs are fixedly connected with the top end of the bottom plate, the top end of the distillation tank is provided with a tank cover, the center of the top of the tank cover is provided with an exhaust port, and the end, away from the tank cover, of the exhaust port is provided with an exhaust pipe; the end, away from the exhaust port, of the exhaust pipe extends into the heat exchange tank and is provided with a snakelike heat exchange pipe, and the end, away from the exhaust pipe, of the snakelike heat exchange pipe extends out of the heat exchange tank and is provided with a drain valve pipe. According to the utility model, not only is the energy-saving property of the methylbenzene rectifier in use improved, but also the rectifying efficiency of the methylbenzene rectifier in use is improved, and the convenience in maintenance of the methylbenzene rectifier is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of toluene rectification, in particular to a toluene rectifier for uniform distillation. Background Technique

[0002] As an important chemical raw material, toluene has a wide range of applications in multiple industrial fields. However, in the process of toluene rectification, due to the problem of uneven liquid distribution in traditional rectification equipment, the rectification effect is often poor. In order to improve this kind of phenomenon, it has become an urgent problem to design a toluene rectifier for uniform distillation.

[0003] A toluene rectifier for uniform distillation with a reference publication number of CN215505563U includes a rectification barrel. One side of the rectification barrel is provided with a moving mechanism. The top and bottom of the rectification barrel are respectively communicated with a liquid inlet pipe and a liquid discharge pipe. A conical platform is sleeved outside the rectification barrel near the liquid inlet pipe, and the inside of the conical platform and the liquid inlet pipe are mutually communicated. A conical clamping seat is fixedly connected below the conical platform inside the rectification barrel. The bottom of the conical clamping seat is equidistantly installed with bent pipes along the circumference and the inside is communicated. Openings are respectively arranged at the positions corresponding to the multiple bent pipes at the inner bottom of the conical clamping seat. A rotating storage mechanism is arranged below the bent pipes inside the rectification barrel, and a driving mechanism is arranged inside the rotating storage mechanism. When rectifying toluene, this toluene rectifier can distribute the liquid more evenly during liquid distribution, thereby improving the efficiency of toluene rectification. According to the above, although this toluene rectifier can be well applied, it is usually not convenient to heat exchange and collect the water vapor generated during the use of the toluene rectifier, making the water vapor easy to dissipate into the air and causing loss, which further affects the energy saving of the toluene rectifier and needs to be improved. Summary of the Invention

[0004] The purpose of the utility model is to provide a toluene rectifier for uniform distillation, so as to solve the problem proposed in the above background technique that although the toluene rectifier can be well applied, it is usually not convenient to heat exchange and collect the water vapor generated during the use of the toluene rectifier, making the water vapor easy to dissipate into the air and causing loss, which further affects the energy saving of the toluene rectifier.

[0005] To achieve the above object, the present utility model provides the following technical solution: A toluene rectifier for uniform distillation, comprising a bottom plate, above which a distillation tank is provided. On the outer wall of the lower end of the distillation tank, there are a number of first legs, and the bottom ends of the first legs are fixedly connected to the top end of the bottom plate. Above the bottom plate on one side of the distillation tank, there is a heat exchange tank. On the outer wall of the lower end of the heat exchange tank, there are a number of second legs, and the bottom ends of the second legs are fixedly connected to the top end of the bottom plate. The top end of the distillation tank is equipped with a tank cover. At the center position of the top of the tank cover, there is an exhaust port. One end of the exhaust port away from the tank cover is equipped with an exhaust pipe, and the end of the exhaust pipe away from the exhaust port extends into the interior of the heat exchange tank and is provided with a serpentine heat exchange pipe. The end of the serpentine heat exchange pipe away from the exhaust pipe extends outside the heat exchange tank and is provided with a drain valve pipe.

[0006] Preferably, equidistantly spaced lower positioning seats are provided on the outer wall of the upper end of the distillation tank, and upper positioning seats are provided on the outer wall of the tank cover above the lower positioning seats. Through the setting of the upper positioning seats and the lower positioning seats, it is convenient to arrange the nut seats and the butterfly bolts.

[0007] Preferably, a liquid injection tray is installed at the lower end inside the tank cover. At the bottom of the liquid injection tray, there are a number of evenly distributed nozzles. Through the setting of the evenly distributed nozzles, it is convenient to uniformly inject the reaction solvent into the distillation tank through the evenly distributed nozzles.

[0008] Preferably, a temperature gauge is installed on one side of the top of the tank cover, and a pressure gauge is installed on the other side of the top of the tank cover. Through the setting of the temperature gauge and the pressure gauge, it is convenient to monitor the temperature and pressure inside the distillation tank.

[0009] Preferably, nut seats are provided on the inner walls of the lower positioning seats, and butterfly bolts are installed at the top ends of the upper positioning seats. The bottom end of the butterfly bolt penetrates through the upper positioning seat and is threadedly connected to the nut seat. By screwing the lower end of the butterfly bolt out of the nut seat, it is convenient to detach the tank cover from the top end of the distillation tank.

[0010] Preferably, a liquid injection port is provided at the center position of the top end of the liquid injection tray. One end of the liquid injection port away from the liquid injection tray is equipped with a liquid addition pipe, and the end of the liquid addition pipe away from the liquid injection port extends outside the tank cover. Through the setting of the liquid addition pipe, it is convenient to inject the reaction solvent into the liquid injection tray through the liquid injection port.

[0011] Compared with the prior art, the beneficial effects of the present utility model are: This toluene rectifier for uniform distillation not only improves the energy saving during the use of the toluene rectifier, but also improves the rectification efficiency of toluene during the use of the toluene rectifier, and moreover improves the convenience during the maintenance of the toluene rectifier;

[0012] The water vapor generated by internal rectification in the distillation tank flows through the exhaust port and into the serpentine heat exchange tube through the exhaust pipe. Inject the low-temperature water source into the heat exchange tank for storage, so that when the water vapor circulates inside the serpentine heat exchange tube, water is formed and discharged through the drain valve pipe, thus achieving the purpose of cooling and collecting the water vapor, and improving the energy saving performance of the toluene rectifier during use;

[0013] Inject the reaction solvent into the injection tray through the liquid addition pipe from the injection port, so that the reaction solvent evenly falls into the distillation tank through the evenly distributed nozzle pipes, and the reaction solvent can be fully dissolved in the materials at the bottom of the distillation tank, thus improving the rectification efficiency of toluene by the toluene rectifier during use;

[0014] By turning the butterfly bolt and screwing the lower end of the butterfly bolt out of the nut seat, and then pulling the tank cover upward, the tank cover can be detached from the top of the distillation tank, making it easy to clean and maintain the inside of the distillation tank, thus improving the convenience during the maintenance of the toluene rectifier. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 2 It is the Figure 1 amplified structure schematic diagram at position A in the present utility model;

[0017] Figure 3 It is a front view sectional structure schematic diagram of the present utility model;

[0018] Figure 4 It is a serpentine heat exchange tube structure schematic diagram of the present utility model.

[0019] In the figure: 1, bottom plate; 2, distillation tank; 201, first leg; 3, heat exchange tank; 301, second leg; 4, tank cover; 5, temperature gauge; 6, pressure gauge; 7, exhaust port; 8, exhaust pipe; 9, drain valve pipe; 10, lower positioning seat; 11, upper positioning seat; 12, nut seat; 13, butterfly bolt; 14, serpentine heat exchange tube; 15, injection tray; 16, injection port; 17, liquid addition pipe; 18, evenly distributed nozzle pipes. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4, an embodiment provided by the present utility model: a toluene rectifier for uniform distillation, comprising a bottom plate 1, a distillation tank 2 is provided above the bottom plate 1, equally spaced lower positioning seats 10 are provided on the outer wall of the upper end of the distillation tank 2, and upper positioning seats 11 are provided on the outer walls of the tank covers 4 above the lower positioning seats 10;

[0022] During use, through the settings of the upper positioning seat 11 and the lower positioning seat 10, the nut seat 12 and the butterfly bolt 13 can be placed and processed;

[0023] Nut seats 12 are provided on the inner walls of the lower positioning seats 10, a butterfly bolt 13 is installed at the top of the upper positioning seat 11, the bottom end of the butterfly bolt 13 passes through the upper positioning seat 11 and is threadedly connected to the nut seat 12;

[0024] During use, by screwing out the lower end of the butterfly bolt 13 to the outside of the nut seat 12, the tank cover 4 can be detached from the top of the distillation tank 2;

[0025] A plurality of first legs 201 are provided on the outer wall of the lower end of the distillation tank 2, the bottom ends of the first legs 201 are fixedly connected to the top end of the bottom plate 1, a heat exchange tank 3 is provided above the bottom plate 1 on one side of the distillation tank 2, a plurality of second legs 301 are provided on the outer wall of the lower end of the heat exchange tank 3, and the bottom ends of the second legs 301 are fixedly connected to the top end of the bottom plate 1. A tank cover 4 is installed at the top of the distillation tank 2, a temperature gauge 5 is installed on one side of the top of the tank cover 4, and a pressure gauge 6 is installed on the other side of the top of the tank cover 4;

[0026] During use, through the settings of the temperature gauge 5 and the pressure gauge 6, the temperature and pressure inside the distillation tank 2 can be monitored;

[0027] A liquid injection tray 15 is installed at the lower end inside the tank cover 4, and a plurality of evenly distributed nozzles 18 are provided at the bottom of the liquid injection tray 15;

[0028] During use, through the setting of the evenly distributed nozzles 18, the reaction solvent can be evenly injected into the distillation tank 2 through the evenly distributed nozzles 18;

[0029] A liquid injection port 16 is provided at the central position of the top end of the liquid injection tray 15, a liquid addition pipe 17 is installed at one end of the liquid injection port 16 away from the liquid injection tray 15, and one end of the liquid addition pipe 17 away from the liquid injection port 16 extends to the outside of the tank cover 4;

[0030] During use, through the setting of the liquid addition pipe 17, the reaction solvent can be injected into the liquid injection tray 15 through the liquid injection port 16;

[0031] An exhaust port 7 is provided at the central position of the top of the can lid 4. One end of the exhaust port 7 away from the can lid 4 is equipped with an exhaust pipe 8. One end of the exhaust pipe 8 away from the exhaust port 7 extends into the interior of the heat exchange tank 3 and is provided with a serpentine heat exchange pipe 14. One end of the serpentine heat exchange pipe 14 away from the exhaust pipe 8 extends to the outside of the heat exchange tank 3 and is provided with a liquid discharge valve pipe 9.

[0032] When the embodiment of the present application is in use, first, toluene material is added to the distillation tank 2, and then the reaction solvent is injected into the liquid injection tray 15 through the liquid injection port 16 by the liquid addition pipe 17, so that the reaction solvent evenly falls into the distillation tank 2 through the uniformly distributed pipe orifices 18, and the reaction solvent can be fully dissolved in the material at the bottom of the distillation tank 2 to improve the rectification efficiency of toluene. Then, a heater is provided at the bottom of the distillation tank 2 to heat the material inside the distillation tank 2. After that, the water vapor generated by rectification inside the distillation tank 2 flows into the serpentine heat exchange pipe 14 through the exhaust port 7 and the exhaust pipe 8. The low-temperature water source is injected and stored in the heat exchange tank 3, so that when the water vapor circulates inside the serpentine heat exchange pipe 14, water is formed and discharged through the liquid discharge valve pipe 9, and the purpose of cooling and collecting the water vapor can be achieved. Finally, by turning the butterfly bolt 13 and screwing the lower end of the butterfly bolt 13 out of the outside of the nut seat 12, and then pulling up the can lid 4, the can lid 4 can be detached from the top of the distillation tank 2, which is convenient for cleaning and maintaining the inside of the distillation tank 2. Additionally, through the settings of the temperature gauge 5 and the pressure gauge 6, the temperature and pressure inside the distillation tank 2 are monitored, thus completing the use of this toluene rectifier.

Claims

1. A toluene rectifier for uniform distillation, characterized in that: The invention comprises a bottom plate (1), a distillation tank (2) is arranged above the bottom plate (1), a plurality of first legs (201) are arranged on the outer wall of the lower end of the distillation tank (2), the bottom ends of the first legs (201) are fixedly connected to the top end of the bottom plate (1), a heat exchange tank (3) is arranged above the bottom plate (1) on one side of the distillation tank (2), a plurality of second legs (301) are arranged on the outer wall of the lower end of the heat exchange tank (3), the bottom ends of the second legs (301) are fixedly connected to the top end of the bottom plate (1), and the heat exchange tank (3) is fixedly connected to the bottom plate (1). The top of the distillation tank (2) is provided with a tank cover (4), a gas outlet (7) is provided at the center of the top of the tank cover (4), an exhaust pipe (8) is provided at one end of the exhaust port (7) away from the tank cover (4), an end of the exhaust pipe (8) away from the exhaust port (7) extends to the interior of the heat exchange tank (3) and is provided with a serpentine heat exchange pipe (14), and an end of the serpentine heat exchange pipe (14) away from the exhaust pipe (8) extends to the exterior of the heat exchange tank (3) and is provided with a drain valve pipe (9).

2. A toluene rectifier for uniform distillation according to claim 1, characterized in that: The outer wall of the upper end of the distillation tank (2) is provided with lower positioning seats (10) at equal intervals, and the outer wall of the tank cover (4) above the lower positioning seats (10) is provided with upper positioning seats (11).

3. A toluene rectifier for uniform distillation according to claim 1, characterized in that: A liquid injection tray (15) is installed at the lower end of the interior of the tank cover (4), and a plurality of evenly distributed pipe openings (18) are provided at the bottom of the liquid injection tray (15).

4. A toluene rectifier for uniform distillation according to claim 1, characterized in that: A temperature gauge (5) is installed on one side of the top of the tank cover (4), and a pressure gauge (6) is installed on the other side of the top of the tank cover (4).

5. A toluene rectifier for uniform distillation according to claim 2, characterized in that: The inner wall of the lower positioning seat (10) is provided with a nut seat (12), the top end of the upper positioning seat (11) is installed with a butterfly bolt (13), and the bottom end of the butterfly bolt (13) passes through the upper positioning seat (11) and is threadedly connected to the nut seat (12).

6. A toluene rectifier for uniform distillation according to claim 3, characterized in that: A liquid injection port (16) is provided at the center of the top end of the liquid injection tray (15); a liquid adding tube (17) is installed at one end of the liquid injection port (16) away from the liquid injection tray (15); and one end of the liquid adding tube (17) away from the liquid injection port (16) extends to the outside of the tank cover (4).

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