P-nitrophenol hydrolysis kettle

Abstract

The utility model relates to the technical field of hydrolysis kettles, and discloses a p-nitrophenol hydrolysis kettle which comprises a hydrolysis kettle body, two feeding pipes are connected to the upper surface of the hydrolysis kettle body in a penetrating mode, a discharging pipe is connected to the lower surface of the hydrolysis kettle body in a penetrating mode, a discharging valve is connected to the middle of the discharging pipe in a penetrating mode, and a sampling assembly is arranged on one side of the hydrolysis kettle body. The sampling assembly comprises a magnetic pump, the magnetic pump is fixedly mounted on one side of the hydrolysis kettle body, and the output end of the magnetic pump is in through connection with a liquid outlet pipe. According to the hydrolysis kettle, internal liquid samples can be conveniently extracted for detection in the reaction process of the hydrolysis kettle, so that hydrolysis reaction data at different stages can be obtained in real time, meanwhile, sampling in solutions at different heights is facilitated, in addition, the sampled solutions can be conveniently cooled, the scalding risk of operators is reduced, and on the other hand, the working efficiency is improved. The edge of the sampling cup can be conveniently pressed down and fixed, and the phenomenon that the sampling cup shakes or topples under the impact of discharged liquid is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydrolysis reactor technology, and in particular to a p-nitrophenol hydrolysis reactor. Background Technology

[0002] p-Nitrophenol is an organic compound widely used in pharmaceuticals, pesticides, dyes, and developing agents. A hydrolysis reactor is a closed reaction device specifically designed for hydrolysis reactions. It is usually made of corrosion-resistant materials and equipped with heating, cooling, and stirring systems. The p-nitrophenol hydrolysis reactor is a device specifically designed for the hydrolysis reaction of p-nitrophenol, which reacts p-nitrophenol or its precursors with water under high temperature and high pressure conditions to generate the target product or intermediate.

[0003] A search revealed that Chinese Patent CN212549494U discloses a hydrolysis reactor used in the production of o-nitrophenol. Addressing the drawback of most equipment for hydrolyzing o-aminophenol raw materials having a long processing time, which hinders production efficiency, this invention incorporates a circulating hot water pipe. In practical applications, this pipe can insulate the inside of the metering tank, ensuring that the o-nitrophenol raw material remains above its melting point before hydrolysis, thus reducing hydrolysis time and improving production efficiency. By incorporating a hot water tank, heating coil, pressure relief pipe, and pressure valve, excess steam can be converted into hot water and stored inside the hot water tank for use in alkali preparation, maximizing steam utilization. This not only saves water resources but also enhances the practicality of the device.

[0004] The aforementioned hydrolysis reactor improves the efficiency of hydrolyzing p-o-aminophenol raw materials. However, in the prior art, during the hydrolysis of p-nitrophenol, the p-nitrophenol is placed in a closed hydrolysis reactor, making it difficult to sample and detect the p-nitrophenol during the reaction. Byproducts may be generated during hydrolysis, and if they are not sampled and analyzed, their accumulation may trigger a chain reaction, leading to a decline in product quality. Furthermore, without sampling and analyzing the internal reactants to determine the optimal reaction time, temperature, and catalyst dosage, it is easy to cause over-reaction and waste of raw materials, while under-reaction can result in low yield. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a p-nitrophenol hydrolysis reactor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a p-nitrophenol hydrolysis reactor, comprising a hydrolysis reactor body, two feed pipes being connected through the upper surface of the hydrolysis reactor body, a discharge pipe being connected through the lower surface of the hydrolysis reactor body, a discharge valve being connected through the middle of the discharge pipe, and a sampling component being provided on one side of the hydrolysis reactor body;

[0007] The sampling assembly includes a magnetic pump, which is fixedly installed on one side of the hydrolysis vessel. The output end of the magnetic pump is connected to a liquid outlet pipe, and the input end of the magnetic pump is connected to a folded pipe. One end of the folded pipe is connected to a sampling pipe, and the external thread of the sampling pipe is connected to a threaded groove. An internally threaded pipe is rotatably connected to the upper surface of the hydrolysis vessel.

[0008] As a further description of the above technical solution:

[0009] The sampling tube is connected through to the upper surface of the hydrolysis vessel. An external gear ring is fixedly connected to the outside of the internally threaded tube. A stepper motor is fixedly installed on the upper surface of the hydrolysis vessel. A gear is fixedly connected to the output end of the stepper motor. The gear and the external gear ring are meshed. A limit rod is fixedly connected to the upper surface of the hydrolysis vessel. A sliding frame is fixedly connected to one side of the sampling tube. The sliding frame is slidably connected to the outside of the limit rod.

[0010] As a further description of the above technical solution:

[0011] A mounting frame is fixedly connected to one side of the hydrolysis vessel, and a cooling fan is fixedly installed inside the mounting frame. A liquid storage tank is fixedly connected to the middle of one side of the hydrolysis vessel, and a sampling cup is provided above the liquid storage tank.

[0012] As a further description of the above technical solution:

[0013] A baffle plate is fixedly connected to one side of the hydrolysis vessel. The baffle plate is located on one side of the liquid storage tank. A variable speed motor is fixedly installed on the lower surface of the liquid storage tank. A stirring frame is fixedly connected to the output end of the variable speed motor. The stirring frame is rotatably connected to the bottom of the inner wall of the liquid storage tank.

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

[0015] A drain pipe is connected through the lower surface of the liquid storage tank, and an inlet pipe is connected through one side of the liquid storage tank. One end of both the inlet pipe and the drain pipe is threaded with a liquid-blocking cap, and a dust-blocking plate is fixedly connected to one side of the mounting frame.

[0016] As a further description of the above technical solution:

[0017] A fixing component is provided on one side of the hydrolysis vessel body. The fixing component includes two fixing plates, which are fixedly connected to one side of the hydrolysis vessel body. A fixing rod is fixedly connected between the fixing plates, and a screw is rotatably connected between the two fixing plates.

[0018] As a further description of the above technical solution:

[0019] The screw is located on one side of the fixed rod. A throttle is fixedly connected to one end of the screw. A connecting block is threaded onto the outside of the screw. The connecting block is slidably connected to the outside of the fixed rod. An arc-shaped rod is provided on one side of the connecting block. Two pressure blocks are fixedly connected to the lower surface of the arc-shaped rod, one of which is fixedly connected to one side of the connecting block.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model, through the setting of the sampling component, facilitates the sampling and testing of the liquid inside the hydrolysis vessel during the reaction of p-nitrophenol using a sampling tube and sampling cup. This allows for timely acquisition of data on the p-nitrophenol hydrolysis reaction at different stages, which helps to control the optimal reaction time, temperature, and catalyst dosage, reducing raw material waste and energy consumption. At the same time, the internal threaded tube and threaded groove facilitate the sampling tube to reach different depths of the solution for sampling, thus facilitating the acquisition of hydrolysis reaction data at different depths. Furthermore, the storage tank, internal coolant, and cooling fan facilitate the cooling of the sampled solution, thereby reducing the risk of burns to operators.

[0022] 2. By setting up a fixing component, this utility model adds a function to the sampling cup in the sampling component, which makes it easier to fix it when the pressure block is pressed down to the edge of the sampling cup. This helps to reduce the phenomenon of shaking and collapse of the sampling cup when the solution inside the hydrolysis vessel is taken out, thus improving the safety and stability of the sampling cup during the sampling process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the windbreak structure proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the sliding frame structure proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the mounting frame structure proposed in this utility model;

[0027] Figure 5This is a schematic diagram of the cross-sectional structure of the liquid storage tank proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the pressing block structure proposed in this utility model.

[0029] Legend:

[0030] 1. Hydrolysis vessel body; 2. Feed pipe; 3. Discharge pipe; 4. Discharge valve; 5. Magnetic pump; 6. Liquid outlet pipe; 7. Folded pipe; 8. Sampling pipe; 9. Threaded groove; 10. Internal threaded pipe; 11. External gear ring; 12. Stepper motor; 13. Gear; 14. Limiting rod; 15. Sliding frame; 16. Mounting frame; 17. Cooling fan; 18. Liquid storage tank; 19. Sampling cup; 20. Baffle plate; 21. Variable speed motor; 22. Stirring frame; 23. Discharge pipe; 24. Liquid inlet pipe; 25. Liquid blocking cover; 26. Dust blocking plate; 27. Fixing plate; 28. Fixing rod; 29. ​​Screw; 30. Rotary handle; 31. Connecting block; 32. Arc rod; 33. Pressure block. Detailed Implementation

[0031] 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.

[0032] As attached Figure 1-6 As shown, one embodiment of the present invention is provided: a p-nitrophenol hydrolysis reactor, including a hydrolysis reactor body 1, two feed pipes 2 are connected through the upper surface of the hydrolysis reactor body 1, a discharge pipe 3 is connected through the lower surface of the hydrolysis reactor body 1, a discharge valve 4 is connected through the middle of the discharge pipe 3, and a sampling component is provided on one side of the hydrolysis reactor body 1.

[0033] The sampling assembly includes a magnetic pump 5, which is fixedly installed on one side of the hydrolysis vessel 1. The output end of the magnetic pump 5 is connected to a liquid outlet pipe 6, and the input end of the magnetic pump 5 is connected to a folded pipe 7. One end of the folded pipe 7 is connected to a sampling pipe 8. The external thread of the sampling pipe 8 is connected to a threaded groove 9. The upper surface of the hydrolysis vessel 1 is rotatably connected to an internally threaded pipe 10. The folded pipe 7 can fold and extend as it moves up and down with the sampling pipe 8. The threaded groove 9 matches the thread of the internally threaded pipe 10.

[0034] As attached Figure 4As shown, the sampling tube 8 is connected through to the upper surface of the hydrolysis vessel 1. An external gear ring 11 is fixedly connected to the outside of the internal threaded tube 10. A stepper motor 12 is fixedly installed on the upper surface of the hydrolysis vessel 1. A gear 13 is fixedly connected to the output end of the stepper motor 12. The gear 13 and the external gear ring 11 are meshed. The external gear ring 11 can drive the internal threaded tube 10 to rotate when it rotates.

[0035] As attached Figure 1 As shown, a limiting rod 14 is fixedly connected to the upper surface of the hydrolysis vessel 1, and a sliding frame 15 is fixedly connected to one side of the sampling tube 8. The sliding frame 15 is slidably connected to the outside of the limiting rod 14. When the sliding frame 15 slides outside the limiting rod 14, it plays a limiting role on the sampling tube 8.

[0036] As attached Figure 2 As shown, a mounting frame 16 is fixedly connected to one side of the hydrolysis vessel 1, and a cooling fan 17 is fixedly installed inside the mounting frame 16. A liquid storage tank 18 is fixedly connected to the middle of one side of the hydrolysis vessel 1, and a sampling cup 19 is set above the liquid storage tank 18. A baffle plate 20 is fixedly connected to one side of the hydrolysis vessel 1. The baffle plate 20 is set on one side of the liquid storage tank 18. The cooling fan 17 plays a role in air cooling the sampling cup 19. The baffle plate 20 facilitates the deflection of air force, thereby improving the air cooling effect.

[0037] As attached Figure 5 As shown, a variable speed motor 21 is fixedly installed on the lower surface of the liquid storage tank 18. An agitator 22 is fixedly connected to the output end of the variable speed motor 21. The agitator 22 is rotatably connected to the bottom of the inner wall of the liquid storage tank 18. A drain pipe 23 is connected through the lower surface of the liquid storage tank 18. An inlet pipe 24 is connected through one side of the liquid storage tank 18. One end of both the inlet pipe 24 and the drain pipe 23 is threaded with a liquid-blocking cap 25. The agitator 22 facilitates the agitation of the coolant to improve its cooling effect. The drain pipe 23 and the inlet pipe 24 facilitate the replacement of the coolant.

[0038] As attached Figure 1 As shown, a dustproof plate 26 is fixedly connected to one side of the mounting frame 16, which blocks dust in the air.

[0039] As attached Figure 4 As shown, a fixing assembly is provided on one side of the hydrolysis vessel 1. The fixing assembly includes two fixing plates 27, which are fixedly connected to one side of the hydrolysis vessel 1. A fixing rod 28 is fixedly connected between the fixing plates 27, and a screw 29 is rotatably connected between the two fixing plates 27. The screw 29 is located on one side of the fixing rod 28, and a handle 30 is fixedly connected to one end of the screw 29. The fixing rod 28 limits the movement of the connecting block 31, and the screw 29 facilitates the movement of the connecting block 31.

[0040] As attached Figure 6As shown, a connecting block 31 is threaded onto the outside of the screw 29. The connecting block 31 is slidably connected to the outside of the fixed rod 28. An arc-shaped rod 32 is provided on one side of the connecting block 31. Two pressure blocks 33 are fixedly connected to the lower surface of the arc-shaped rod 32. One of the pressure blocks 33 is fixedly connected to one side of the connecting block 31. The connecting block 31 facilitates the downward movement of the pressure block 33. The arc-shaped rod 32 is used to connect the two pressure blocks 33 together.

[0041] Working principle: When sampling using the hydrolysis vessel 1, first open the liquid-blocking cap 25 at the inlet pipe 24 to fill the storage tank 18 with coolant. Then turn on the cooling fan 17 and the stepper motor 12. The output of the stepper motor drives the gear 13 to rotate. Under the action of the gear 13 meshing with the external gear ring 11, the external gear ring 11 rotates. As the threaded groove 9 is threaded to the internal threaded tube 10, one end of the sampling tube 8 is driven to pass through the hydrolysis vessel 1 and move downward. At this time, the sampling tube 8 drives the sliding frame 15 to slide outside the limit rod 14, so that one end of the sampling tube 8 is inserted into the solution inside the hydrolysis vessel 1. The sampling tube 8 can be observed through the observation window on one side of the hydrolysis vessel 1. The depth of one end of the sampling tube 8 after it is inserted into the solution is adjusted according to the solution layer to be sampled. Then, the magnetic pump 5 is turned on. Using its input end connected to the folded tube 7 and the sampling tube 8, the solution inside the hydrolysis vessel 1 is introduced into the sampling cup 19 through the outlet tube 6. At this time, after the cooling fan 17 blows air into the sampling cup 19, the air force hits the baffle plate 20 and is folded back by the air cooling effect. At the same time, the variable speed motor 21 is turned on. The output end of the variable speed motor 21 drives the stirring frame 22 to stir the coolant. Under the water cooling effect of the sampling cup 19 contacting the liquid storage tank 18 filled with coolant, it is easy to cool down the sample solution and reduce the phenomenon of operators being burned. Thus, the sampling is completed.

[0042] When the sampling cup 19 is placed above the liquid storage tank 18 and needs to be fixed, turn the handle 30 to drive the screw 29 to rotate. Under the limiting action of the fixing rod 28, the connecting block 31 is moved down. The connecting block 31 drives one of the pressure blocks 33 to move down. Under the connection of the arc rod 32, it also drives the other pressure block 33 to move down, pressing down on the edge of the sampling cup 19 so that it is placed stably.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A p-nitrophenol hydrolysis vessel, comprising a hydrolysis vessel body (1), characterized in that: The upper surface of the hydrolysis vessel (1) is connected to two feed pipes (2), the lower surface of the hydrolysis vessel (1) is connected to a discharge pipe (3), the middle part of the discharge pipe (3) is connected to a discharge valve (4), and a sampling component is provided on one side of the hydrolysis vessel (1). The sampling assembly includes a magnetic pump (5), which is fixedly installed on one side of the hydrolysis vessel (1). The output end of the magnetic pump (5) is connected to a liquid outlet pipe (6), and the input end of the magnetic pump (5) is connected to a folded pipe (7). One end of the folded pipe (7) is connected to a sampling pipe (8), and the external thread of the sampling pipe (8) is connected to a threaded groove (9). The upper surface of the hydrolysis vessel (1) is rotatably connected to an internally threaded pipe (10).

2. The p-nitrophenol hydrolysis reactor according to claim 1, characterized in that: The sampling tube (8) is connected to the upper surface of the hydrolysis vessel body (1). An external gear ring (11) is fixedly connected to the outside of the internal threaded tube (10). A stepper motor (12) is fixedly installed on the upper surface of the hydrolysis vessel body (1). A gear (13) is fixedly connected to the output end of the stepper motor (12). The gear (13) and the external gear ring (11) are meshed. A limit rod (14) is fixedly connected to the upper surface of the hydrolysis vessel body (1). A sliding frame (15) is fixedly connected to one side of the sampling tube (8). The sliding frame (15) is slidably connected to the outside of the limit rod (14).

3. The p-nitrophenol hydrolysis reactor according to claim 1, characterized in that: A mounting frame (16) is fixedly connected to one side of the hydrolysis vessel (1), and a cooling fan (17) is fixedly installed inside the mounting frame (16). A liquid storage tank (18) is fixedly connected to the middle of one side of the hydrolysis vessel (1), and a sampling cup (19) is provided above the liquid storage tank (18).

4. The p-nitrophenol hydrolysis reactor according to claim 3, characterized in that: A baffle plate (20) is fixedly connected to one side of the hydrolysis vessel (1). The baffle plate (20) is located on one side of the storage tank (18). A variable speed motor (21) is fixedly installed on the lower surface of the storage tank (18). A stirring frame (22) is fixedly connected to the output end of the variable speed motor (21). The stirring frame (22) is rotatably connected to the bottom of the inner wall of the storage tank (18).

5. The p-nitrophenol hydrolysis reactor according to claim 3, characterized in that: The lower surface of the liquid storage tank (18) is connected to a drain pipe (23), and one side of the liquid storage tank (18) is connected to an inlet pipe (24). One end of the inlet pipe (24) and the drain pipe (23) are threaded with a liquid-blocking cap (25). One side of the mounting frame (16) is fixedly connected to a dust-blocking plate (26).

6. The p-nitrophenol hydrolysis reactor according to claim 1, characterized in that: A fixing assembly is provided on one side of the hydrolysis vessel (1). The fixing assembly includes two fixing plates (27). The two fixing plates (27) are fixedly connected to one side of the hydrolysis vessel (1). A fixing rod (28) is fixedly connected between the fixing plates (27). A screw (29) is rotatably connected between the two fixing plates (27).

7. The p-nitrophenol hydrolysis reactor according to claim 6, characterized in that: The screw (29) is located on one side of the fixed rod (28). One end of the screw (29) is fixedly connected to a throttle (30). The screw (29) is threadedly connected to a connecting block (31). The connecting block (31) is slidably connected to the outside of the fixed rod (28). An arc-shaped rod (32) is provided on one side of the connecting block (31). Two pressure blocks (33) are fixedly connected to the lower surface of the arc-shaped rod (32). One of the pressure blocks (33) is fixedly connected to one side of the connecting block (31).

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