Para-aminophenol catalyst circulating device

Abstract

The utility model discloses a p-aminophenol catalyst circulating device, and particularly relates to the technical field of catalyst circulating production, which comprises a fixed box, a heating mechanism is arranged in the fixed box, a feeding box is arranged at the top of the fixed box, a feeding cylinder is arranged at the top of the feeding box, and a discharging cylinder is arranged at the bottom of the fixed box. A feeding mechanism is arranged in the feeding cylinder and comprises a feeding pipe arranged at the top of the feeding cylinder, a filter screen is arranged at the bottom of the feeding cylinder, a motor is arranged on one side of the feeding box, the output end of the motor is coaxially in transmission connection with a rotating shaft, and the rotating shaft is sleeved with a movable plate. Wherein a sealing ring is arranged on the surface of the movable plate, a sealing ring is arranged on one side of the movable plate, and an infrared sensor is arranged at the top of the sealing ring. According to the utility model, cyclic utilization of a catalyst and accurate control of reaction conditions can be realized, so that a powerful guarantee is provided for long-term stable operation of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst recycling production, and more specifically, the utility model relates to a p-aminophenol catalyst recycling device. Background Technique

[0002] p-Aminophenol, also known as "p-hydroxyaniline", is a fine organic chemical intermediate widely used in China, and is used to prepare developers, antioxidants, petroleum additives, etc. Most of the production processes of p-aminophenol use catalysts to maintain the pH value of the reaction. Therefore, the recycling device of the p-aminophenol catalyst realizes the recovery and regeneration of the catalyst, which helps to reduce costs and improve production efficiency.

[0003] After retrieval, the Chinese patent with the publication number CN115025721A discloses a catalyst continuous circulation reaction experimental device. This structure can carry out experiments on various forms of multiple reactors and multiple circulation schemes of regenerated catalysts by setting one or two regenerators and improving the structural design of the reactor and the regenerator. Moreover, the circulation amount of the catalyst can be measured more accurately, increasing the reliability of the experiment and the guidance for industrial catalytic cracking operations. Through the special design of the reactor heating furnace, external heat dissipation or heating during the reaction can be avoided, realizing an adiabatic reaction with the outside world, making the reaction results more reliable.

[0004] However, when this structure is actually used, the absorbed catalyst may contain impurities such as unreacted reactants, products or by-products, and these impurities need to be removed through a cleaning step. The cleaning liquid can be an appropriate solvent, but the metering of the cleaning liquid in this structure completely depends on manual perception, thus affecting the recycling effect of the catalyst. Content of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a p-aminophenol catalyst recycling device to solve the problems put forward in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A p-aminophenol catalyst recycling device includes a fixed box, a heating mechanism is arranged inside the fixed box, a feeding box is arranged on the top of the fixed box, a feeding cylinder is arranged on the top of the feeding box, and a feeding mechanism is arranged inside the feeding cylinder;

[0008] The feeding mechanism includes a feeding pipe arranged on the top of the feeding barrel, a filter screen is arranged at the bottom of the feeding barrel, a motor is arranged on one side of the feeding box, an output end of the motor is coaxially connected with a rotating shaft, a movable plate is sleeved on the rotating shaft, a sealing ring is arranged on the surface of the movable plate, a sealing ring is arranged on one side of the movable plate, and an infrared sensor is arranged on the top of the sealing ring.

[0009] By adopting the above technical solution: in order to achieve the recycling of catalysts and the precise control of reaction conditions, a strong guarantee is provided for the long-term stable operation of the device.

[0010] As a further description of the above technical solution: a first motor is arranged on the top of the feeding barrel, and a rotating rod is coaxially connected to the output end of the first motor, a plurality of stirring rods are arranged on the surface of the rotating rod, a baffle is arranged on one side of the rotating rod, and the heating mechanism includes a hot air blower arranged on one side of the fixed box, and an air outlet pipe is arranged at the bottom of the hot air blower.

[0011] By adopting the above technical solution, the cleaning liquid can be stirred so that it can be fully blended when added with multiple cleaning liquids, thereby improving practicality.

[0012] As a further description of the above technical solution: a branch pipe is arranged at one end of the air outlet pipe, an air outlet hopper is arranged at one side of the branch pipe, a feed pipe is arranged at the top of the fixed box, and a heat dissipation pipe is arranged at one side of the feed pipe.

[0013] By adopting the above technical solution: in order to dry the catalyst, the moisture introduced in the cleaning process can be removed, and the operation is convenient and quick.

[0014] As a further description of the above technical solution: a reaction cylinder is arranged inside the fixed box, a discharge pipe is arranged at the bottom of the reaction cylinder, support legs are arranged at the four corners of the bottom of the fixed box, and universal wheels are arranged at the bottom of the support legs.

[0015] By adopting the above technical solution: it is convenient to discharge the material and to move the device.

[0016] Technical effects and advantages of the utility model:

[0017] By setting up a feeding mechanism, compared with the prior art, the cleaning liquid is poured into the interior of the feeding cylinder through the feeding pipe. Meanwhile, the first motor is started to drive the rotating rod and the stirring rod to rotate. It enters the interior of the feeding box through the filter screen at the bottom of the feeding cylinder, and then falls onto the surface of the movable plate. When the cleaning liquid on the surface of the movable plate reaches a certain height, it is sensed by the infrared sensor. The first motor drives the baffle to rotate to the surface of the filter screen, thus stopping the feeding. Then, the motor is started to drive the rotating shaft to rotate, and the rotating shaft drives the movable plate to rotate. The rotation of the movable plate causes the cleaning liquid on its surface to be poured into the interior of the heat dissipation pipe, thereby cleaning the catalyst. At the same time, the metering is accurately controlled, thus improving the cleaning effect;

[0018] By setting up a heating mechanism, compared with the prior art, the cleaned catalyst needs to be dried. The hot air blower is started to make the hot air enter the interior of the branch pipe through the air outlet pipe, and is discharged from the air outlet hopper through the branch pipe, thereby heating the surface of the heat dissipation pipe, so as to remove the moisture introduced during the cleaning process, ensure that the catalyst reaches an appropriate humidity level, and then restore its catalytic performance, so that it can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a schematic diagram of the overall front view sectional structure of the present utility model.

[0021] Figure 3 It is a schematic diagram of the sectional structure of the feeding mechanism of the present utility model.

[0022] Figure 4 It is a schematic diagram of the structure of the feeding mechanism of the present utility model.

[0023] Figure 5 It is a schematic diagram of the overall sectional structure of the present utility model.

[0024] Reference numerals are: 1, fixed box; 2, feeding box; 3, feeding cylinder; 4, feeding pipe; 5, filter screen; 6, motor; 7, rotating shaft; 8, movable plate; 9, sealing ring; 10, infrared sensor; 11, first motor; 12, rotating rod; 13, stirring rod; 14, baffle; 15, hot air blower; 16, air outlet pipe; 17, branch pipe; 18, air outlet hopper; 19, feeding pipe; 20, heat dissipation pipe; 21, reaction cylinder; 22, discharge pipe; 23, support leg; 24, universal wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] An embodiment of the present application discloses a p-aminophenol catalyst circulation device as Figures 1-5 shown, which includes a fixed box 1. A heating mechanism is arranged inside the fixed box 1. A feeding box 2 is arranged on the top of the fixed box 1. A feeding cylinder 3 is arranged on the top of the feeding box 2. A feeding mechanism is arranged inside the feeding cylinder 3;

[0027] The feeding mechanism includes a feeding pipe 4 arranged on the top of the feeding cylinder 3. A filter screen 5 is arranged at the bottom of the feeding cylinder 3. A motor 6 is arranged on one side of the feeding box 2. The output end of the motor 6 is coaxially driven and connected with a rotating shaft 7. A movable plate 8 is sleeved on the rotating shaft 7. A sealing ring 9 is arranged on the surface of the movable plate 8. A sealing ring 9 is arranged on one side of the movable plate 8. An infrared sensor 10 is arranged on the top of the sealing ring 9. It enters the inside of the feeding box 2 through the filter screen 5 at the bottom of the feeding cylinder 3 and then falls onto the surface of the movable plate 8. When the cleaning liquid on the surface of the movable plate 8 reaches a certain height, it is sensed by the infrared sensor 10. The first motor 11 drives the baffle 14 to rotate to the surface of the filter screen 5, thereby stopping feeding. Then the motor 6 is started to drive the rotating shaft 7 to rotate. The rotating shaft 7 drives the movable plate 8 to rotate. The movable plate 8 rotates to pour the cleaning liquid on its surface into the inside of the heat dissipation pipe 20, thereby cleaning the catalyst, and accurately controlling the measurement at the same time, so as to improve the cleaning effect.

[0028] Referring to Figures 2-4 as shown, a first motor 11 is arranged on the top of the feeding cylinder 3. The output end of the first motor 11 is coaxially driven and connected with a rotating rod 12. A plurality of stirring rods 13 are arranged on the surface of the rotating rod 12. A baffle 14 is arranged on one side of the rotating rod 12. The heating mechanism includes a hot air blower 15 arranged on one side of the fixed box 1. An air outlet pipe 16 is arranged at the bottom of the hot air blower 15. First, the cleaning liquid is poured into the inside of the feeding cylinder 3 through the feeding pipe 4. At the same time, the first motor 11 is started to drive the rotating rod 12 to rotate. The rotating rod 12 drives the stirring rods 13 to rotate, thereby stirring the cleaning liquid.

[0029] Referring to Figures 4-5As shown, one end of the air outlet pipe 16 is provided with a branch pipe 17, one side of the branch pipe 17 is provided with an air outlet hopper 18, the top of the fixed box 1 is provided with a feeding pipe 19, one side of the feeding pipe 19 is provided with a heat dissipation pipe 20, a reaction cylinder 21 is arranged inside the fixed box 1, a discharge pipe 22 is arranged at the bottom of the reaction cylinder 21, support legs 23 are arranged at the four corners of the bottom of the fixed box 1, and universal wheels 24 are arranged at the bottom of the support legs 23. The washed catalyst needs to be dried. Start the hot air blower 15 to make hot air enter the inside of the branch pipe 17 through the air outlet pipe 16 and discharge from the air outlet hopper 18 through the branch pipe 17, so as to heat the surface of the reaction cylinder 21, thereby removing the moisture introduced during the cleaning process, ensuring that the catalyst reaches an appropriate humidity level, and then restoring its catalytic performance. And by pushing the fixed box 1 to drive the universal wheels 24 to rotate, the movement of the device is facilitated.

[0030] Working principle of the present utility model: When the present utility model is in use, the catalyzed substances after the reaction are conveyed into the inside of the reaction cylinder 21 through the feeding pipe 19. At the same time, the recovered catalyst may contain impurities such as unreacted reactants, products or by-products, and these impurities need to be removed through the cleaning step. First, pour the cleaning liquid into the inside of the feeding cylinder 3 through the feeding pipe 4, and at the same time start the first motor 11 to drive the rotating rod 12 to rotate. The rotating rod 12 drives the stirring rod 13 to rotate, so as to stir the cleaning liquid, and at the same time enter the feeding box 2 through the filter screen 5 at the bottom of the feeding cylinder 3, and then fall onto the surface of the movable plate 8. When the cleaning liquid on the surface of the movable plate 8 reaches a certain height, it is sensed by the infrared sensor 10. The model of the infrared sensor 10 is E3K-100. The first motor 11 drives the baffle 14 to rotate to the surface of the filter screen 5, so as to stop feeding. Then start the motor 6 to drive the rotating shaft 7 to rotate. The rotating shaft 7 drives the movable plate 8 to rotate. The rotation of the movable plate 8 causes the cleaning liquid on its surface to pour into the inside of the heat dissipation pipe 20, so as to clean the catalyzed substances, and at the same time accurately control the measurement, thereby improving the cleaning effect;

[0031] The washed catalyst needs to be dried. Start the hot air blower 15 to make hot air enter the inside of the branch pipe 17 through the air outlet pipe 16 and discharge from the air outlet hopper 18 through the branch pipe 17, so as to heat the surface of the reaction cylinder 21, thereby removing the moisture introduced during the cleaning process, ensuring that the catalyst reaches an appropriate humidity level, and then restoring its catalytic performance.

[0032] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A p-aminophenol catalyst recycling device, comprising a fixed box (1), characterized in that: A heating mechanism is arranged inside the fixed box (1), a feeding box (2) is arranged on the top of the fixed box (1), a feeding cylinder (3) is arranged on the top of the feeding box (2), and a feeding mechanism is arranged inside the feeding cylinder (3); The feeding mechanism comprises a feeding pipe (4) arranged at the top of a feeding barrel (3), a filter screen (5) is arranged at the bottom of the feeding barrel (3), a motor (6) is arranged on one side of the feeding box (2), an output end of the motor (6) is coaxially connected to a rotating shaft (7), a movable plate (8) is sleeved on the rotating shaft (7), a sealing ring (9) is arranged on the surface of the movable plate (8), a sealing ring (9) is arranged on one side of the movable plate (8), and an infrared sensor (10) is arranged on the top of the sealing ring (9).

2. The p-aminophenol catalyst circulation device according to claim 1, characterized in that: A first motor (11) is arranged on the top of the feeding barrel (3); an output end of the first motor (11) is coaxially connected to a rotating rod (12); a plurality of stirring rods (13) are arranged on the surface of the rotating rod (12); and a baffle (14) is arranged on one side of the rotating rod (12).

3. The p-aminophenol catalyst circulation device according to claim 1, characterized in that: The heating mechanism comprises a hot air blower (15) arranged on one side of the fixed box (1), and an air outlet pipe (16) is arranged at the bottom of the hot air blower (15).

4. The p-aminophenol catalyst circulation device according to claim 3, wherein: A branch pipe (17) is provided at one end of the air outlet pipe (16), and an air outlet scoop (18) is provided at one side of the branch pipe (17).

5. The p-aminophenol catalyst circulation device according to claim 1, characterized in that: A feed pipe (19) is provided on the top of the fixed box (1), and a heat dissipation pipe (20) is provided on one side of the feed pipe (19).

6. The p-aminophenol catalyst circulation device according to claim 1, characterized in that: A reaction cylinder (21) is arranged inside the fixed box (1), and a discharge pipe (22) is arranged at the bottom of the reaction cylinder (21).

7. The p-aminophenol catalyst circulation device according to claim 1, characterized in that: Support legs (23) are provided at the four corners of the bottom of the fixed box (1), and universal wheels (24) are provided at the bottom of the support legs (23).

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