Automatic deslagging device for catalyst in production of p-aminophenol

Abstract

The utility model discloses an automatic deslagging device for a catalyst in p-aminophenol production, and particularly relates to the technical field of chemical equipment, the automatic deslagging device comprises a base, the top of the base is fixedly connected with a supporting column, the front side of the supporting column is fixedly connected with two fixing rings, and the interiors of the two fixing rings are fixedly connected with a mixed deslagging mechanism; wherein the mixing deslagging mechanism comprises a mixing barrel, a mixing funnel is fixedly connected to the top of the inner wall of the mixing barrel, a discharging pipe is fixedly connected to the bottom of the mixing funnel, a rear cover is fixedly connected to the top of the mixing barrel, and two movable seats are fixedly connected to the top of the rear cover. By arranging the mixing and deslagging mechanism, the motor drives the rotating rod and the first mixing plate to repeatedly turn over aminophenol and a solid catalyst up and down, so that the aminophenol and the solid catalyst are mixed more sufficiently, and the reaction is more sufficient; meanwhile, aminophenol and a solid catalyst which are subjected to mixed reaction can quickly fall off through a discharging scraper, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, and more specifically, to an automatic slag removal device for a catalyst in the production of p-aminophenol. Background Art

[0002] p-Aminophenol is a widely used fine chemical intermediate, mainly used in the synthesis of paracetamol, clofibrate and other drugs, sulfide blue FBG, weak acid yellow 5G and other dyes and developers, antioxidants and petroleum additives, etc. In China, p-aminophenol is mainly produced by catalytic hydrogenation reduction of p-nitrophenol. The catalyst is mainly Pt / C or Pd / C. Organic solvents are added during production to keep the catalyst in the organic solvent phase, p-aminophenol and other substances are dissolved in the water phase, and the catalyst is recovered and reused.

[0003] Existing catalysts are easily poisoned, especially after several cycles of use, their activity decreases, and the spent catalysts need to be removed from the system. The process for removing spent catalyst slag in industrial production is sedimentation, recovery, filtration, washing, filtration, drying, and discharging. This process has the problems of long process flow, multiple equipment, large footprint, and complex operation.

[0004] After searching, the Chinese patent with publication number CN208340296U discloses an automatic catalyst slag removal device. This utility model automatically completes the catalyst slag removal filtering, washing, drying, discharging and other processes in one device, with simple process, less equipment and investment, compact structure and small footprint.

[0005] When the above-mentioned automatic slag removal device is actually used, the stirring device is used for forward stirring and reverse auxiliary ejection operations. When aminophenol is mixed with a solid catalyst in the production, due to the large space between the mixing barrel and the stirring rod, the frequency of stirring and mixing of aminophenol and the solid catalyst when being stirred forward by the stirring rod is reduced to a certain extent, resulting in insufficient mixing of aminophenol and the solid catalyst within a shorter reaction time. Utility Model Content

[0006] In order to overcome the above defects of the prior art, the utility model provides an automatic slag removal device for catalyst in the production of p-aminophenol to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An automatic slag removal device for a catalyst in the production of p-aminophenol, comprising a base, a support column is fixedly connected to the top of the base, two fixed rings are fixedly connected to the front side of the support column, and a mixed slag removal mechanism is fixedly connected inside the two fixed rings;

[0009] The mixing and deslagging mechanism includes a mixing cylinder, a mixing funnel is fixedly connected to the top of the inner wall of the mixing cylinder, a feeding pipe is fixedly connected to the bottom of the mixing funnel, a rear cover is fixedly connected to the top of the mixing cylinder, two movable seats are fixedly connected to the top of the rear cover, front covers are movably connected to the outer sides of the two movable seats, a feeding pipe is fixedly connected to the top of the front cover, a motor is fixedly connected to the top of the rear cover, a rotating rod is coaxially connected to the output end of the motor, and a first mixing plate is fixedly connected to the outer top of the rotating rod.

[0010] By adopting the above technical scheme: the support column is fixedly connected at the top of the base, the two fixing rings are fixedly connected at the front side of the support column, the mixing barrel is fixedly connected inside the fixing ring, the mixing funnel is fixedly connected at the top of the inner wall of the mixing barrel, the feeding pipe is fixedly connected at the bottom of the mixing funnel, the rear cover is fixedly connected at the top of the mixing barrel, the two movable seats are fixedly connected at the top of the rear cover, the front cover is movably connected at the outsides of the two movable seats, the feeding pipe is fixedly connected at the top of the front cover, the motor is fixedly connected at the top of the rear cover, the rotating rod is coaxially connected at the output end of the motor, and the first mixing plate is fixedly connected at the outside of the rotating rod.

[0011] As a further description of the above technical solution:

[0012] A second mixing plate is fixedly connected to the middle portion of the outer side of the rotating rod, and a material discharge scraper is fixedly connected to the bottom side of the outer side of the rotating rod.

[0013] By adopting the above technical solution: the second mixing plate is fixedly connected to the middle part of the outer side of the rotating rod, and the unloading scraper is fixedly connected to the bottom part of the outer side of the rotating rod.

[0014] As a further description of the above technical solution:

[0015] A fixing frame is fixedly connected inside the mixing cylinder, a telescopic rod is fixedly connected to the top of the fixing frame, and a rubber plug is fixedly connected to the top of the telescopic rod.

[0016] By adopting the above technical solution: the fixing frame is fixedly connected inside the mixing barrel, the telescopic rod is fixedly connected to the top of the fixing frame, and the rubber plug is fixedly connected to the top of the telescopic rod.

[0017] As a further description of the above technical solution:

[0018] The front side of the mixing cylinder is movably connected to two arc-shaped sealing strips, and the front sides of the two arc-shaped sealing strips are fixedly connected to handles.

[0019] By adopting the above technical solution: two arc-shaped sealing strips are movably connected at the front side of the mixing barrel, and two handles are fixedly connected at the front sides of the two arc-shaped sealing strips.

[0020] As a further description of the above technical solution:

[0021] The inner walls of the two arc-shaped sealing strips are fixedly connected with filter screens, the two filter screens are evenly distributed inside the mixing cylinder, and the bottom of the mixing cylinder is fixedly connected with a spiral conveying pipe.

[0022] By adopting the above technical solution: two filter screens are fixedly connected to the inner walls of two arc-shaped sealing strips, the two filter screens are evenly distributed inside the mixing barrel, and the spiral conveying pipe is fixedly connected to the bottom of the mixing barrel.

[0023] As a further description of the above technical solution:

[0024] A collecting box is movably connected inside the base, and two sliding blocks are fixedly connected outside the collecting box.

[0025] By adopting the above technical solution: the collection box is movably connected inside the base, and the two sliders are fixedly connected outside the collection box.

[0026] As a further description of the above technical solution:

[0027] A fixed pipe is fixedly connected to one side of the top of the collection box, and a movable cover is arranged on the front side of the top of the collection box.

[0028] By adopting the above technical solution: the fixed pipe is fixedly connected to one side of the top of the collecting box, and the movable cover is arranged on the front side of the top of the collecting box.

[0029] Technical effects and advantages of the utility model:

[0030] By setting up the mixing and slag removal mechanism, compared with the prior art, the motor drives the rotating rod and the first mixing plate to repeatedly flip the aminophenol and the solid catalyst up and down, so that the aminophenol and the solid catalyst are mixed more fully and the reaction is more complete. At the same time, the aminophenol and the solid catalyst after the mixed reaction can fall quickly through the unloading scraper, thereby improving the production efficiency;

[0031] By arranging an arc-shaped sealing strip, a filter screen, a spiral conveying pipe, a collection box, a slider, a fixed pipe and a movable cover, compared with the prior art, the mixed aminophenol is screened by two filter screens, so that the solid catalyst remains on the top of the filter screen, and aminobenzoic acid is conveyed to the inside of the collection box through the spiral conveying pipe, thereby improving the collection efficiency. At the same time, the arc-shaped sealing strip and the filter screen are taken out by a handle, so that the solid catalyst on the top of the filter screen can be collected and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0033] Figure 2 It is a schematic diagram of the fixing ring structure of the utility model.

[0034] Figure 3This is a schematic diagram of the internal structure of the mixing cylinder of the present utility model.

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing frame of the utility model.

[0036] Figure 5 It is a schematic diagram of the rear cover structure of the utility model.

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of the collection box of the present utility model.

[0038] The accompanying drawings are marked as follows: 1. base; 2. support column; 3. fixed ring; 4. mixing barrel; 5. mixing funnel; 6. feeding pipe; 7. rear cover; 8. movable seat; 9. front cover; 10. feeding pipe; 11. motor; 12. rotating rod; 13. first mixing plate; 14. second mixing plate; 15. feeding scraper; 16. fixed frame; 17. telescopic rod; 18. rubber plug; 19. handle; 20. arc sealing strip; 21. filter screen; 22. spiral conveying pipe; 23. collecting box; 24. slider; 25. fixed pipe; 26. movable cover. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The embodiment of the present application discloses an automatic slag removal device for a catalyst in the production of p-aminophenol, specifically comprising a base 1, a support column 2 is fixedly connected to the top of the base 1, two fixed rings 3 are fixedly connected to the front side of the support column 2, and a mixed slag removal mechanism is fixedly connected inside the two fixed rings 3;

[0041] The mixing and deslagging mechanism includes a mixing barrel 4, a mixing funnel 5 is fixedly connected to the top of the inner wall of the mixing barrel 4, a feeding pipe 6 is fixedly connected to the bottom of the mixing funnel 5, a rear cover 7 is fixedly connected to the top of the mixing barrel 4, two movable seats 8 are fixedly connected to the top of the rear cover 7, a front cover 9 is movably connected to the outer sides of the two movable seats 8, a feeding pipe 10 is fixedly connected to the top of the front cover 9, a motor 11 is fixedly connected to the top of the rear cover 7, a rotating rod 12 is coaxially connected to the output end of the motor 11, and a first mixing plate 13 is fixedly connected to the outer top of the rotating rod 12. The first mixing plate 13 and the second mixing plate 14 are driven by the motor 11 and the rotating rod 12 to flip up and down aminophenol and the solid catalyst for many times to improve the mixing efficiency, and the aminophenol and the solid catalyst can be quickly dropped into the bottom of the mixing barrel 4 through the feeding pipe 6 through the feeding scraper 15.

[0042] Reference Figure 5 As shown, specifically, a second mixing plate 14 is fixedly connected to the middle of the outer side of the rotating rod 12, and a material discharge scraper 15 is fixedly connected to the outer bottom side of the rotating rod 12, so as to repeatedly stir the aminophenol and the solid catalyst and accelerate the material discharge speed.

[0043] Reference Figure 4 As shown, specifically, a fixing frame 16 is fixedly connected inside the mixing barrel 4, a telescopic rod 17 is fixedly connected to the top of the fixing frame 16, a rubber plug 18 is fixedly connected to the top of the telescopic rod 17, and the bottom of the discharge pipe 6 is opened and closed to control the mixing time of aminophenol and the solid catalyst, and then the telescopic rod 17 is opened for discharge.

[0044] Reference Figure 3 As shown, specifically, two arc-shaped sealing strips 20 are movably connected to the front side of the mixing barrel 4, handles 19 are fixedly connected to the front sides of the two arc-shaped sealing strips 20, and filter screens 21 are fixedly connected to the inner walls of the two arc-shaped sealing strips 20. The two filter screens 21 are evenly distributed inside the mixing barrel 4 to screen out the solid catalyst from the aminophenol.

[0045] Reference Figure 1 As shown, specifically, a spiral conveying tube 22 is fixedly connected to the bottom of the mixing cylinder 4 to quickly convey the aminophenol to the interior of the collecting box 23 .

[0046] Reference Figure 6 As shown, specifically, a collecting box 23 is movably connected inside the base 1, two sliders 24 are fixedly connected to the outside of the collecting box 23, a fixed tube 25 is fixedly connected to one side of the top of the collecting box 23, and a movable cover 26 is provided on the front side of the top of the collecting box 23 to effectively collect the aminophenol after slag removal.

[0047] Working principle of the utility model: in the production of aminophenol, it is necessary to put aminophenol and solid catalyst together for reaction, first open the back cover 7 through two movable seats 8, put the solid catalyst into the mixing funnel 5, then cover the back cover 7, put aminophenol into the mixing funnel 5 through the feeding pipe 10, then start the motor 11 to drive the rotating rod 12 to rotate, the rotating rod 12 drives the first mixing plate 13 and the second mixing plate 14 to turn the solid catalyst and aminophenol up and down in the mixing funnel 5, so that the aminophenol and the solid catalyst can be more fully mixed, and then when the mixing is completed, wait for the aminophenol and the solid catalyst to react for a period of time, and then the telescopic rod 17 on the top of the fixed frame 16 drives the rubber stopper 18 to move downward, so that the connection between the rubber stopper 18 and the discharge pipe 6 is separated, so that the aminophenol Aminophenol and solid catalyst can fall into the top of two filter screens 21 through the feed pipe 6, and at the same time, the feed scraper 15 is driven by the rotating rod 12 to stir the solid catalyst accumulated inside the feed pipe 6, so that the solid catalyst and aminophenol can fall quickly, and then the solid catalyst and aminophenol are filtered through the two filter screens 21, and then the filtered aminophenol is transported to the inside of the collecting box 23 through the spiral conveying pipe 22 at the bottom of the mixing barrel 4, and finally the collecting box 23 can be removed from the inside of the base 1 through the two sliders 24, and then the aminophenol is poured out through the movable cover 26 to complete the slag removal when aminobenzoic acid reacts with the solid catalyst, and finally the arc sealing strip 20 and the filter screen 21 are pulled by the two handles 19, and the filter screen 21 can be removed from the inside of the mixing barrel 4, so as to facilitate the recovery and reuse of the solid catalyst on the top of the two filter screens 21.

[0048] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic slag removal device for a catalyst in the production of p-aminophenol, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support column (2), the front side of the support column (2) is fixedly connected to two fixing rings (3), and the inside of the two fixing rings (3) is fixedly connected to a mixing slag removal mechanism; The mixing and deslagging mechanism comprises a mixing barrel (4), a mixing funnel (5) is fixedly connected to the top of the inner wall of the mixing barrel (4), a feeding pipe (6) is fixedly connected to the bottom of the mixing funnel (5), a rear cover (7) is fixedly connected to the top of the mixing barrel (4), two movable seats (8) are fixedly connected to the top of the rear cover (7), a front cover (9) is movably connected to the outer sides of the two movable seats (8), a feeding pipe (10) is fixedly connected to the top of the front cover (9), a motor (11) is fixedly connected to the top of the rear cover (7), a rotating rod (12) is coaxially connected to the output end of the motor (11), and a first mixing plate (13) is fixedly connected to the outer top of the rotating rod (12).

2. The automatic slag removal device for the catalyst in the production of p-aminophenol according to claim 1, characterized in that: A second mixing plate (14) is fixedly connected to the middle portion of the outer side of the rotating rod (12), and a material discharge scraper (15) is fixedly connected to the bottom side of the outer side of the rotating rod (12).

3. The automatic slag removal device for the catalyst in the production of p-aminophenol according to claim 1, characterized in that: A fixing frame (16) is fixedly connected inside the mixing barrel (4), a telescopic rod (17) is fixedly connected to the top of the fixing frame (16), and a rubber plug (18) is fixedly connected to the top of the telescopic rod (17).

4. The automatic slag removal device for the catalyst in the production of p-aminophenol according to claim 1, characterized in that: The front side of the mixing cylinder (4) is movably connected to two arc-shaped sealing strips (20), and the front sides of the two arc-shaped sealing strips (20) are both fixedly connected to a handle (19).

5. The automatic slag removal device for the catalyst in the production of p-aminophenol according to claim 4, characterized in that: The inner walls of the two arc-shaped sealing strips (20) are both fixedly connected with filter screens (21), the two filter screens (21) are evenly distributed inside the mixing barrel (4), and the bottom of the mixing barrel (4) is fixedly connected with a spiral conveying pipe (22).

6. The automatic slag removal device for the catalyst in the production of p-aminophenol according to claim 1, characterized in that: A collecting box (23) is movably connected inside the base (1), and two sliding blocks (24) are fixedly connected outside the collecting box (23).

7. The automatic slag removal device for the catalyst in the production of p-aminophenol according to claim 6, characterized in that: A fixed pipe (25) is fixedly connected to one side of the top of the collection box (23), and a movable cover (26) is provided on the front side of the top of the collection box (23).

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