A p-chloroaniline reduction retort

Abstract

This utility model discloses a p-chloroaniline reducing distillation kettle, specifically relating to the field of fine chemicals. It includes an outer shell, with several support legs fixedly connected vertically to the bottom of the outer shell. A control switch is installed on the outer wall of the outer shell. A distillation kettle body is installed inside the outer shell. A cover is fixedly connected to the top of the distillation kettle body, extending above the outer shell. A fixing seat is fixedly installed at the center of the top of the cover, and a speed reducer is installed on the top of the fixing seat. A stirring motor is installed on the top of the speed reducer. A feeding port is provided on the top of the cover, and a discharge port is provided at the bottom of the distillation kettle body, extending to the bottom of the outer shell. This utility model, by setting up a heating assembly and utilizing multiple connecting pipes, forms a pipe network heating structure with multiple annular pipes, achieving effective heating of the stirring part at the bottom of the distillation kettle body. The heat is more uniform, and it is easy to move and place stably.

Description

Technical Field

[0001] This utility model relates to the field of fine chemicals, and more specifically, to a p-chloroaniline reducing distillation vessel. Background Technology

[0002] In the field of fine chemicals, p-chloroaniline is an important organic synthesis intermediate, widely used in industries such as dyes, pharmaceuticals, pesticides and polymer materials. In its production process, the reduction reaction is one of the key steps, which aims to efficiently convert p-chloronitrobenzene into p-chloroaniline. Traditional reduction processes mostly use iron powder reduction or sodium sulfide reduction. The reduction distillation kettle is a key piece of equipment that integrates reaction and separation, and its performance directly affects the efficiency of the entire production process and the quality of the product.

[0003] Existing p-chloroaniline reducing distillation vessels typically employ heating rods or spiral heating tubes. The drawback of this heating method is that the heating of the reaction section is not uniform enough. In addition, the distillation vessel itself is relatively bulky and inconvenient to move. Furthermore, if the ground is uneven, the support plate needs to be lifted, which is time-consuming, labor-intensive, and inconvenient to operate. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a p-chloroaniline reduction distillation vessel.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a p-chloroaniline reducing distillation vessel, comprising an outer shell, with several supporting legs fixedly connected to the bottom of the outer shell along the vertical direction, and a control switch installed on the outer wall of the outer shell; a distillation vessel body installed inside the outer shell; a cover fixedly connected to the top of the distillation vessel body extending above the outer shell; a fixed base fixedly installed at the top center of the cover; a speed reducer installed on the top of the fixed base; a stirring motor installed on the top of the speed reducer; a feeding port provided at the top of the cover; a discharge port provided at the bottom of the distillation vessel body; the bottom of the discharge port extending below the outer shell; a heating component installed inside the outer shell outside the distillation vessel body; and a moving switching mechanism provided at the bottom of each supporting leg.

[0006] As a further improvement to the technical solution of this utility model, the heating component includes several annular tubes connected to the inner wall of the outer shell and located outside the distillation vessel. The multiple annular tubes are equidistantly arranged in the vertical direction, and several vertically arranged connecting pipes are connected between two adjacent annular tubes. The outer wall of the topmost annular tube is connected to a steam inlet pipe, and the outer wall of the bottommost annular tube is connected to a steam outlet pipe.

[0007] As a further improvement to the technical solution of this utility model, one end of the water vapor inlet pipe extends horizontally through and to the outside of the outer shell, and the end of the water vapor outlet pipe extends vertically through to the bottom of the outer shell.

[0008] As a further improvement to the technical solution of this utility model, the movable switching mechanism includes a lifting rod vertically connected to the bottom of the support leg. The bottom end of the lifting rod is fixedly connected to a base plate. The top of the base plate is connected to a first hydraulic cylinder on the outside of the support leg. The top of the first hydraulic cylinder is fixedly connected to a first fixed frame. The movable switching mechanism also includes a second fixed frame fixedly connected to the inner side wall of the support leg. The bottom of the second fixed frame is fixedly installed with a second hydraulic cylinder. The bottom end of the second hydraulic cylinder is fixedly connected to a movable plate. The bottom of the movable plate is equipped with wheels.

[0009] As a further improvement to the technical solution of this utility model, the bottom of the support leg is provided with a contraction groove along the vertical direction corresponding to the outside of the lifting rod. The first fixing frame is fixedly connected to the support leg and the first hydraulic cylinder by bolts. The output end of the first hydraulic cylinder is fixedly connected to the top of the base plate vertically downward by screws.

[0010] As a further improvement to the technical solution of this utility model, the second fixed frame is fixedly connected to the outer wall of the support leg and the top of the second hydraulic cylinder by bolts, and the output end of the second hydraulic cylinder is fixedly connected to the top of the movable plate vertically downward by screws.

[0011] As a further improvement to the technical solution of this utility model, one end of the movable plate is provided with a limiting block inserted into the inner wall of the support leg, and the inner wall of the support leg is provided with a limiting groove in the vertical direction corresponding to the outer side of the limiting block.

[0012] The beneficial effects of this utility model are:

[0013] 1. By setting up a heating component, during use, the external high-temperature steam pipe is connected to the water vapor inlet pipe, allowing the high-temperature steam to enter the annular pipe. The multiple connecting pipes and the annular pipe form a pipe network heating structure, which effectively heats the stirring part at the bottom of the distillation vessel, resulting in more uniform heat distribution.

[0014] 2. By setting up a moving switching mechanism, when it is needed for placement and use, the piston of the first hydraulic cylinder can be controlled to extend and push the bottom plate, so that the wheels are lifted off the ground. It can also be adjusted according to the flatness of the ground to achieve the effect of horizontal placement. When not in use, when moving the vessel, the piston of the first hydraulic cylinder can be controlled to retract and the piston of the second hydraulic cylinder can be controlled to extend so that the wheels contact the ground and lift the bottom plate off the ground, so that the position can be easily moved. The operation is simple. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is the front view of the present invention.

[0017] Figure 3 This is a schematic diagram of the heating component in this utility model.

[0018] Figure 4 This utility model Figure 1 Enlarged view of section A.

[0019] Figure 5 This is a schematic diagram of the connection point of the moving switching mechanism in this utility model.

[0020] The attached diagram is labeled as follows: 1. Outer shell; 2. Support leg; 3. Control switch; 4. Distillation vessel body; 5. Heating assembly; 6. Cover; 7. Fixing base; 8. Reducer; 9. Stirring motor; 10. Feed port; 11. Discharge port; 12. Lifting rod; 13. Base plate; 14. First fixing frame; 15. First hydraulic cylinder; 16. Second fixing frame; 17. Second hydraulic cylinder; 18. Movable plate; 19. Wheel; 201. Shrinkage groove; 202. Limiting slide groove; 501. Annular pipe; 502. Connecting pipe; 503. Steam inlet pipe; 504. Steam outlet pipe; 181. Limiting block. Detailed Implementation

[0021] 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.

[0022] As attached Figure 1-5 The p-chloroaniline reducing distillation vessel shown includes an outer shell 1. Several support legs 2 are fixedly connected to the bottom of the outer shell 1 in a vertical direction. A control switch 3 is installed on the outer wall of the outer shell 1. A distillation vessel body 4 is installed inside the outer shell 1. A cover 6 is fixedly connected to the top of the distillation vessel body 4, extending above the outer shell 1. A fixing seat 7 is fixedly installed at the center of the top of the cover 6. A reducer 8 is installed on the top of the fixing seat 7. A stirring motor 9 is installed on the top of the reducer 8. A feeding port 10 is provided on the top of the cover 6. A discharge port 11 is provided at the bottom of the distillation vessel body 4. The bottom of the discharge port 11 extends below the outer shell 1. A heating component 5 is installed inside the outer shell 1, located outside the distillation vessel body 4. A moving switching mechanism is provided at the bottom of each support leg 2.

[0023] As attached Figure 1-3 As shown, the heating assembly 5 includes several annular tubes 501 connected to the inner wall of the outer shell 1 and located outside the distillation vessel 4. The multiple annular tubes 501 are equidistantly arranged in the vertical direction, and several vertically arranged connecting tubes 502 are connected between adjacent two annular tubes 501. The outer wall of the topmost annular tube 501 is connected to a steam inlet tube 503, and the outer wall of the bottommost annular tube 501 is connected to a steam outlet tube 504. One end of the steam inlet tube 503 extends horizontally through and to the outside of the outer shell 1, and the end of the steam outlet tube 504 extends vertically through to the bottom of the outer shell 1. The heating assembly 5 uses multiple annular tubes that are interconnected to transport high-temperature steam to heat the distillation vessel 4.

[0024] As attached Figure 1-2 and attached Figure 4-5 As shown, the movable switching mechanism includes a lifting rod 12 vertically connected to the bottom of the support leg 2. A base plate 13 is fixedly connected to the bottom end of the lifting rod 12. A first hydraulic cylinder 15 is connected to the top of the base plate 13 on the outside of the support leg 2. A first fixed frame 14 is fixedly connected to the top of the first hydraulic cylinder 15. The movable switching mechanism also includes a second fixed frame 16 fixedly connected to the inner wall of the support leg 2. A second hydraulic cylinder 17 is fixedly installed at the bottom of the second fixed frame 16. A movable plate 18 is fixedly connected to the bottom end of the second hydraulic cylinder 17. A wheel 19 is installed at the bottom of the movable plate 18. A contraction groove 201 is provided vertically on the bottom of the support leg 2 corresponding to the outside of the lifting rod 12. The first fixed frame 14 is fixedly connected to the support leg 2 and the first hydraulic cylinder 15 by bolts. The output end of the first hydraulic cylinder 15 is vertically downward and fixedly connected to the top of the base plate 13 by screws. The second fixed frame... The outer wall of the support leg 2 and the top of the second hydraulic cylinder 17 are fixedly connected by bolts. The output end of the second hydraulic cylinder 17 is vertically downward and fixedly connected to the top of the movable plate 18 by screws. One end of the movable plate 18 is provided with a limiting block 181 inserted into the inner side wall of the support leg 2. The inner side wall of the support leg 2 is provided with a limiting groove 202 in the vertical direction corresponding to the outer side of the limiting block 181. The provided moving switching mechanism facilitates the control of the piston of the first hydraulic cylinder 15 to extend and push the bottom plate 13 when it is needed for placement and use, so that the wheels 19 are lifted off the ground. It can also be adjusted according to the flatness of the placement ground to achieve the effect of horizontal placement. When not in use, when moving the vessel, the piston of the first hydraulic cylinder 15 is controlled to retract and the piston of the second hydraulic cylinder 17 is controlled to extend so that the wheels 19 contact the ground and the bottom plate 13 is lifted off the ground, so that the position can be easily moved.

[0025] Working principle: The distillation vessel designed in this invention is used for the reduction of p-chloroaniline. The specific structure is shown in the attached instruction manual. Figure 1-5As shown, in this technical solution, the main body adopts a conventional distillation kettle structure. The difference lies in the heating component 5 and the moving switching mechanism designed in this application. When in use, the heating component 5 uses an external high-temperature steam pipe to connect with the steam inlet pipe 503, allowing high-temperature steam to enter the annular pipe 501. Multiple connecting pipes 502 are used to form a pipe network heating structure with the annular pipe 501, achieving effective heating of the stirring part at the bottom of the distillation kettle body 4, resulting in more uniform heat distribution. The moving switching mechanism allows for easy placement when needed. When the kettle body needs to be moved, the piston of the first hydraulic cylinder 15 is controlled to extend and push the bottom plate 13, causing the wheels 19 to lift off the ground. It can also be adjusted according to the flatness of the ground to achieve a horizontal placement effect. When not in use, when moving the kettle body, the piston of the first hydraulic cylinder 15 is controlled to retract, and the piston of the second hydraulic cylinder 17 is controlled to extend, causing the wheels 19 to contact the ground and the bottom plate 13 to lift off the ground, making it easy to move the kettle body and simplifying the operation.

[0026] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0027] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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-chloroaniline reducing distillation vessel, comprising an outer shell (1), wherein a plurality of support legs (2) are fixedly connected to the bottom end of the outer shell (1) in a vertical direction, and a control switch (3) is installed on the outer wall of the outer shell (1); a distillation vessel body (4) is installed inside the outer shell (1); a cover (6) is fixedly connected to the top of the distillation vessel body (4) extending above the outer shell (1); a fixing seat (7) is fixedly installed at the center of the top of the cover (6); a speed reducer (8) is installed on the top of the fixing seat (7); a stirring motor (9) is installed on the top of the speed reducer (8); a feeding port (10) is provided on the top of the cover (6); a discharge port (11) is provided at the bottom of the distillation vessel body (4); and the bottom of the discharge port (11) extends below the outer shell (1), characterized in that: The heating assembly (5) is installed inside the outer shell (1) outside the distillation vessel body (4), and a moving switching mechanism is provided at the bottom of each support leg (2).

2. The p-chloroaniline reducing distillation vessel according to claim 1, characterized in that: The heating assembly (5) includes several annular tubes (501) connected to the inner wall of the outer shell (1) and located outside the distillation vessel body (4). The multiple annular tubes (501) are equidistantly arranged in the vertical direction, and several vertically arranged connecting tubes (502) are connected between two adjacent annular tubes (501). The outer wall of the topmost annular tube (501) is connected to a steam inlet tube (503), and the outer wall of the bottommost annular tube (501) is connected to a steam outlet tube (504).

3. The p-chloroaniline reducing distillation vessel according to claim 2, characterized in that: One end of the steam inlet pipe (503) extends horizontally through and to the outside of the outer casing (1), and the end of the steam outlet pipe (504) extends vertically through to the bottom of the outer casing (1).

4. The p-chloroaniline reducing distillation vessel according to claim 1, characterized in that: The movable switching mechanism includes a lifting rod (12) vertically connected to the bottom of the support leg (2). The bottom end of the lifting rod (12) is fixedly connected to a base plate (13). The top of the base plate (13) is located on the outside of the support leg (2) and connected to a first hydraulic cylinder (15). The top of the first hydraulic cylinder (15) is fixedly connected to a first fixed frame (14). The movable switching mechanism also includes a second fixed frame (16) fixedly connected to the inner wall of the support leg (2). The bottom of the second fixed frame (16) is fixedly installed with a second hydraulic cylinder (17). The bottom end of the second hydraulic cylinder (17) is fixedly connected to a movable plate (18). The bottom of the movable plate (18) is equipped with wheels (19).

5. The p-chloroaniline reducing distillation vessel according to claim 4, characterized in that: The bottom of the support leg (2) is provided with a shrinkage groove (201) in the vertical direction on the outside of the lifting rod (12). The first fixing frame (14) is fixedly connected to the support leg (2) and the first hydraulic cylinder (15) by bolts. The output end of the first hydraulic cylinder (15) is fixedly connected to the top of the base plate (13) by screws in a vertical downward direction.

6. The p-chloroaniline reducing distillation vessel according to claim 4, characterized in that: The second fixed frame (16) is fixedly connected to the outer wall of the support leg (2) and the top of the second hydraulic cylinder (17) by bolts, and the output end of the second hydraulic cylinder (17) is fixedly connected to the top of the movable plate (18) vertically downward by screws.

7. The p-chloroaniline reducing distillation vessel according to claim 4, characterized in that: One end of the movable plate (18) is provided with a limiting block (181) inserted into the inner wall of the support leg (2), and the inner wall of the support leg (2) is provided with a limiting groove (202) in the vertical direction corresponding to the outer side of the limiting block (181).

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