Catalyst recovery device for hydroquinone preparation

Abstract

The utility model discloses a catalyst recovery device for hydroquinone preparation, which comprises a collecting tank, a catalyst centrifugal device is rotatably mounted in the collecting tank, and a centrifugal cylinder cleaning device is mounted above the collecting tank. The catalyst centrifugal device is installed, catalyst liquid after reaction enters the barrel through the liquid inlet channel, the liquid in the catalyst is thrown out of the centrifugal holes due to the centrifugal effect and collected in the collecting tank, the catalyst is reserved in the barrel, recovery of the catalyst is facilitated, the top cover and the cleaning assembly are made to ascend through the air cylinder, and the catalyst can be cleaned conveniently. A user pulls out the cylinder to separate the catalyst, the catalyst can be conveniently cleaned out, the cylinder is further cleaned, a centrifugal cylinder cleaning device is installed, and after centrifugal separation, a mounting plate and a scraping plate are made to rotate tightly close to the inner wall and the outer wall of the cylinder through a second motor; and residual liquid and a catalyst on the inner wall and the outer wall of the barrel can be scraped into the corresponding collecting tank and the barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of hydroquinone preparation, in particular to a catalyst recovery device for hydroquinone preparation. Background Technique

[0002] The preparation of hydroquinone is carried out by mixing phenol and sulfuric acid in a certain molar ratio and reacting at a suitable reaction temperature and reaction time. The reaction is usually carried out in the presence of a catalyst. The intermediate benzoquinone generated by the reaction is reduced to hydroquinone. However, after the reaction, the catalyst usually adheres to the reactants or products and needs to be recovered and reused. The recovery methods of the catalyst include centrifugation, filtration and precipitation.

[0003] In the prior art, the publication number is CN221107299U. The technical solution disclosed in this patent document is as follows: A catalyst recovery filter, belonging to the technical field of catalyst recovery, includes a tank body. A filtering component is rotatably connected to the inner wall of the tank body. The filtering component includes a connecting pipe and a filtering cover. A fixing plate is fixedly connected to the surface of the tank body. A feed pipe penetrates through the surface of the fixing plate. One end of the feed pipe is rotatably connected to the inner wall of the connecting pipe through a bearing. A transmission component is fixedly connected to the surface of the tank body. By setting a sealing component, the threaded column drives the threaded pipe and the sealing plug to move upward, so as to facilitate opening the discharge pipe, so as to facilitate the discharged catalyst separated through the discharge pipe and facilitate the next separation work of the catalyst.

[0004] After the above technical solution is centrifuged, the motor is driven to make the brush hairs rotate, so as to clean the catalyst at the bottom side inside the filtering cover, but the inner wall of the filtering cover after centrifugation cannot be cleaned, so that the liquid or catalyst remaining on the inner and outer walls of the filtering cover cannot be treated, and it will be very difficult to clean up after a long time. Content of the Utility Model

[0005] The purpose of the utility model is to provide a catalyst recovery device for hydroquinone preparation to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A catalyst recovery device for hydroquinone preparation includes a collection tank. A catalyst centrifugation device is rotatably installed in the collection tank. A centrifugal cylinder cleaning device is installed above the collection tank.

[0007] The catalyst centrifugation device includes a first motor. The first motor is arranged outside the lower collection tank. The lower part of the collection tank is rotatably connected to a rotating shaft through a bearing and extends to the upper part inside the collection tank. Convex strips are arranged on the outer wall of the upper part of the rotating shaft. Transmission wheels are sleeved on the outer wall of the lower part of the rotating shaft and the output end of the first motor. A transmission belt is arranged between the two transmission wheels. A centrifugal cylinder assembly is sleeved on the outer wall of the rotating shaft.

[0008] The centrifuge tube cleaning device includes a support ring, the support ring is arranged on the outer wall above the collection tank, cylinders are arranged on the support ring, the output end of the cylinder is fixedly connected with a top cover, and a cleaning component is rotatably installed in the middle of the top cover.

[0009] As a further preferred embodiment of this technical solution, a liquid discharge pipe is arranged on the outer wall below the collection tank, a base is arranged on the bottom side of the collection tank, and limiting holes are arranged in a row on the top side of the collection tank.

[0010] As a further preferred embodiment of this technical solution, the centrifuge tube assembly includes a sleeve, grooves are arranged in a row on the inner wall of the sleeve, and the inner wall of the groove and the outer wall of the rib are both slidably connected.

[0011] In the above technical solution, the top cover and the cleaning component are lifted by the cylinder, and the user can pull out the cylinder body to separate it, which is convenient for cleaning the catalyst.

[0012] As a further preferred embodiment of this technical solution, the bottom side of the sleeve is fixedly connected with a cylinder body, and centrifugal holes are arranged in a row on the outer wall of the cylinder body.

[0013] As a further preferred embodiment of this technical solution, limiting columns are arranged in a row on the bottom side of the top cover, a liquid inlet channel is arranged on the top cover, and the limiting columns are clamped with the limiting holes.

[0014] As a further preferred embodiment of this technical solution, the cleaning component includes a second motor, the second motor is arranged in the middle of the top end of the top cover, the output end of the second motor passes through the top cover and a connecting plate is arranged in a row, and mounting plates are fixedly connected to the bottom sides of the connecting plates, and scraping plates are arranged on the inner sides of the mounting plates.

[0015] In the above technical solution, the mounting plates and the scraping plates rotate closely against the inner and outer walls of the cylinder body, and can scrape the residual liquid and catalyst on the inner and outer walls of the cylinder body into the corresponding collection tank and the cylinder body, which can not only increase the recovery of the catalyst, but also reduce the subsequent cleaning burden on the disassembled cylinder body.

[0016] As a further preferred embodiment of this technical solution, one side of the scraping plate contacts the outer wall of the cylinder body, and the other side of the scraping plate contacts the inner wall of the cylinder body.

[0017] The present invention provides a catalyst recovery device for the preparation of hydroquinone, which has the following beneficial effects:

[0018] (1) The utility model installs a catalyst centrifugal device. After the reaction, the catalyst liquid enters the cylinder through the liquid inlet channel. Driven by the first motor, the rotating shaft rotates, and then the cylinder rotates through the limit. Due to the centrifugal force, the liquid in the catalyst is thrown out from the centrifugal holes and collected in the collection tank, while the catalyst remains in the cylinder, which is convenient for the recovery of the catalyst. Moreover, the top cover and the cleaning component are lifted by the cylinder, and the user can pull out the cylinder to separate it, which is convenient for cleaning the catalyst and further cleaning the cylinder.

[0019] (2) The utility model installs a centrifugal cylinder cleaning device. After centrifugal separation, the second motor makes the mounting plate and the scraper rotate closely against the inner and outer walls of the cylinder, which can scrape the residual liquid and catalyst on the inner and outer walls of the cylinder into the corresponding collection tank and the cylinder body. This can not only increase the recovery of the catalyst but also reduce the cleaning burden of the disassembled cylinder body in the follow-up. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the whole utility model;

[0021] Figure 2 is a sectional view of the utility model;

[0022] Figure 3 is a schematic structural diagram of the interior of the utility model;

[0023] Figure 4 is a schematic structural diagram of the cleaning component of the utility model;

[0024] Figure 5 is a schematic structural diagram of the centrifugal cylinder assembly of the utility model;

[0025] In the figure: 1. Collection tank; 2. Catalyst centrifugal device; 3. Centrifugal cylinder cleaning device; 11. Drain pipe; 12. Limit hole; 13. Base; 21. First motor; 22. Rotating shaft; 221. Rib; 23. Driving wheel; 24. Transmission belt; 25. Centrifugal cylinder assembly; 251. Sleeve; 252. Groove; 253. Cylinder body; 254. Centrifugal hole; 31. Support ring; 32. Cylinder; 33. Top cover; 331. Limit post; 332. Liquid inlet channel; 34. Cleaning component; 341. Second motor; 342. Connecting plate; 343. Mounting plate; 344. Scraper. Detailed Embodiment

[0026] 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.

[0027] The present utility model provides a technical solution: as Figure 1 and Figure 2As shown in the figure, in this embodiment, a catalyst recovery device for the preparation of hydroquinone includes a collection tank 1. A catalyst centrifugation device 2 is rotatably installed in the collection tank 1. A centrifugal cylinder cleaning device 3 is installed above the collection tank 1. A drain pipe 11 is provided on the outer wall below the collection tank 1. A base 13 is provided on the bottom side of the collection tank 1. Limiting holes 12 are arranged in a row on the top side of the collection tank 1.

[0028] As Figure 3 and Figure 5 As shown in the figure, the catalyst centrifugation device 2 includes a first motor 21. The first motor 21 is arranged outside the lower collection tank 1. The lower part of the collection tank 1 is rotatably connected to a rotating shaft 22 through a bearing and extends to the upper part inside the collection tank 1. Convex strips 221 are arranged in a row on the outer wall above the rotating shaft 22. Transmission wheels 23 are sleeved on the outer wall below the rotating shaft 22 and the output end of the first motor 21. A transmission belt 24 is arranged between the two transmission wheels 23. A centrifugal cylinder assembly 25 is sleeved on the outer wall of the rotating shaft 22. The centrifugal cylinder assembly 25 includes a sleeve 251. Grooves 252 are arranged in a row on the inner wall of the sleeve 251. The inner wall of the groove 252 and the outer wall of the convex strip 221 are slidably connected. A cylinder body 253 is fixedly connected to the bottom side of the sleeve 251. Centrifugal holes 254 are arranged in a row on the outer wall of the cylinder body 253. After installing the catalyst centrifugation device 2, the reacted catalyst liquid enters the cylinder body 253 through the liquid inlet channel 332. Driven by the first motor 21, the rotating shaft 22 rotates, and then the cylinder body 253 is driven to rotate through limiting. Due to the centrifugal force, the liquid in the catalyst is thrown out from the centrifugal holes 254 and collected in the collection tank 1, while the catalyst remains in the cylinder body 253, which is convenient for the recovery of the catalyst. And by means of the cylinder 32, the top cover 33 and the cleaning assembly 34 are lifted, and the user can pull out the cylinder body 253 to separate it, which is convenient for cleaning the catalyst and further cleaning the cylinder body 253.

[0029] As Figure 2 and Figure 4As shown in the figure, the centrifuge tube cleaning device 3 includes a support ring 31 which is arranged on the outer wall above the collection tank 1. A cylinder 32 is arranged in an array on the support ring 31. The output end of the cylinder 32 is fixedly connected with a top cover 33. A cleaning assembly 34 is rotatably installed in the middle of the top cover 33. A limiting post 331 is arranged in an array on the bottom side of the top cover 33. A liquid inlet channel 332 is arranged on the top cover 33. The limiting post 331 is clamped with the limiting hole 12. The cleaning assembly 34 includes a second motor 341 which is arranged in the middle of the top of the top cover 33. The output end of the second motor 341 passes through the top cover 33 and a connecting plate 342 is arranged in an array. The bottom sides of the connecting plates 342 are fixedly connected with mounting plates 343. Scrapers 344 are arranged inside the mounting plates 343. One side of the scraper 344 is in contact with the outer wall of the cylinder 253, and the other side of the scraper 344 is in contact with the inner wall of the cylinder 253. By installing the centrifuge tube cleaning device 3, after centrifugal separation, the second motor 341 is used to make the mounting plates 343 and the scrapers 344 rotate closely against the inner and outer walls of the cylinder 253, so that the liquid and the catalyst remaining on the inner and outer walls of the cylinder 253 can be scraped into the corresponding collection tank 1 and the cylinder 253. This can not only increase the recovery of the catalyst, but also reduce the subsequent cleaning burden on the removed cylinder 253.

[0030] The present utility model provides a catalyst recovery device for hydroquinone preparation. The specific working principle is as follows: The reacted catalyst liquid enters the cylinder 253 through the liquid inlet channel 332. Driven by the first motor 21, the rotating shaft 22 rotates. Since the convex strip 221 is stuck in the groove 252, the cylinder 253 starts to rotate. Under the centrifugal force, the liquid is thrown into the collection tank 1 through the centrifugal holes 254, and the catalyst remains in the cylinder 253. After the centrifugation ends, the first motor 21 is stopped, and the second motor 341 is started to drive the mounting plates 343 and the scrapers 344 to rotate on the inner and outer walls of the cylinder 253, scraping the remaining liquid and catalyst into the corresponding collection tank 1 and the cylinder 253. The cylinder 32 is started to raise the top cover 33 and the cleaning assembly 34. The user can hold the cylinder 253 and pull it out, collect the catalyst, and further clean the cylinder 253.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A catalyst recovery device for the preparation of hydroquinone, comprising a collection tank (1), characterized in that: A catalyst centrifugal device (2) is rotatably installed in the collection tank (1), and a centrifuge cylinder cleaning device (3) is installed above the collection tank (1); The catalyst centrifugal device (2) includes a first motor (21), the first motor (21) is arranged outside the lower collection tank (1), the lower part of the collection tank (1) is rotatably connected to a rotating shaft (22) through a bearing, and extends to the upper part inside the collection tank (1). The outer wall of the upper part of the rotating shaft (22) is arranged with convex strips (221). Transmission wheels (23) are sleeved on the outer wall of the lower part of the rotating shaft (22) and the output end of the first motor (21). A transmission belt (24) is arranged between the two transmission wheels (23). A centrifuge cylinder assembly (25) is sleeved on the outer wall of the rotating shaft (22); The centrifuge cylinder cleaning device (3) includes a support ring (31), the support ring (31) is arranged on the outer wall of the upper part of the collection tank (1), cylinders (32) are arranged on the support ring (31), the output end of the cylinder (32) is fixedly connected to a top cover (33), and a cleaning assembly (34) is rotatably installed in the middle of the top cover (33).

2. The catalyst recovery device for hydroquinone preparation according to claim 1, wherein: A liquid discharge pipe (11) is arranged on the outer wall of the lower part of the collection tank (1), a base (13) is arranged at the bottom side of the collection tank (1), and limiting holes (12) are arranged in a row on the top side of the collection tank (1).

3. The catalyst recovery device for hydroquinone preparation according to claim 1, characterized in that: The centrifuge cylinder assembly (25) includes a sleeve (251), grooves (252) are arranged in a row on the inner wall of the sleeve (251), and the inner wall of the groove (252) and the outer wall of the convex strip (221) are slidably connected.

4. The catalyst recovery device for hydroquinone preparation according to claim 3, characterized in that: The bottom side of the sleeve (251) is fixedly connected to a cylinder body (253), and centrifugal holes (254) are arranged in a row on the outer wall of the cylinder body (253).

5. The catalyst recovery device for hydroquinone preparation according to claim 1, wherein: Limiting columns (331) are arranged in a row on the bottom side of the top cover (33), a liquid inlet channel (332) is arranged on the top cover (33), and the limiting columns (331) are clamped with the limiting holes (12).

6. The catalyst recovery device for hydroquinone preparation according to claim 1, characterized in that: The cleaning assembly (34) includes a second motor (341), the second motor (341) is arranged in the middle of the top of the top cover (33), the output end of the second motor (341) passes through the top cover (33) and is arranged with connecting plates (342), mounting plates (343) are fixedly connected to the bottom sides of the connecting plates (342), and scraping plates (344) are arranged inside the mounting plates (343).

7. A catalyst recovery device for the preparation of hydroquinone according to claim 6, characterized in that: One side of the scraping plate (344) is in contact with the outer wall of the cylinder body (253), and the other side of the scraping plate (344) is in contact with the inner wall of the cylinder body (253).

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