Caprolactam production gas phase rearrangement process system

Abstract

The utility model relates to the technical field of equipment for caprolactam production, and discloses a caprolactam production gas-phase rearrangement process system which comprises a shell and a reaction kettle, the reaction kettle is arranged in the middle of the interior of the shell, a feeding port is formed in the upper left end of the reaction kettle, a discharging port is formed in the middle of the bottom of the reaction kettle, and a gas-phase rearrangement device is arranged in the shell. A valve is installed on the discharging port, the top of the feeding port penetrates through the top of the shell and extends upwards, supporting legs are arranged on the two sides of the bottom of the shell, universal wheels are installed at the bottoms of the two supporting legs, a motor is installed on the top of the shell, and a motor is installed on the top of the shell. And an output shaft of the motor penetrates through the top of the shell and is connected with a coupling in the shell. According to the reaction kettle, the water conveying pipelines, the spraying pipelines, the cleaning nozzles and the connecting pieces are arranged and are matched with one another, so that the interior of the reaction kettle can be conveniently cleaned, and the cleaning difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment for producing caprolactam, in particular to a gas phase rearrangement process system for producing caprolactam. Background Art

[0002] Rearrangement reaction refers to the reaction in which ketoxime undergoes intramolecular rearrangement under acid catalysis to generate the corresponding amide. It is an important process in organic and pharmaceutical synthesis. In the production of caprolactam, a gas phase rearrangement process system is used.

[0003] The existing caprolactam production gas-phase rearrangement process system is not convenient for cleaning the inside of the reactor during use, which makes it difficult to clean the inside of the reactor. In addition, due to its usually large volume, it is not convenient to transfer the gas-phase rearrangement process system. Therefore, there is an urgent need for a caprolactam production gas-phase rearrangement process system to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a gas-phase rearrangement process system for producing caprolactam, so as to solve the problem that the existing gas-phase rearrangement process system for producing caprolactam proposed in the above-mentioned background technology is not convenient for cleaning the inside of the reactor during use, resulting in great difficulty in cleaning the inside of the reactor, and the gas-phase rearrangement process system is not convenient to transfer due to its usually large volume.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas phase rearrangement process system for producing caprolactam comprises a shell and a reactor, wherein the reactor is arranged in the middle of the shell, an inlet is arranged at the upper left end of the reactor, an outlet is arranged at the middle of the bottom of the reactor, a valve is installed on the outlet, the top of the inlet passes through the top of the shell and extends upward, supporting feet are arranged on both sides of the bottom of the shell, universal wheels are installed at the bottom of the two supporting feet, a motor is installed on the top of the shell, the output shaft of the motor passes through the top of the shell and is connected to the internal coupling A stirring shaft is vertically arranged inside the reactor, the upper end of the stirring shaft passes through the top of the reactor and is connected to the coupling, both sides of the bottom of the reactor are connected to the inner bottom end of the shell through columns, a cleaning nozzle is embedded on the side wall of the reactor, a spray pipe is arranged on the outside of the reactor, the spray pipe is connected to the inner wall of the shell through a connecting piece, one side of the spray pipe is connected to a water supply pipe, one end of the water supply pipe passes through the side wall of the shell and extends outward, and one end of the cleaning nozzle is connected to the spray pipe.

[0007] As a preferred technical solution of the utility model, the number of the universal wheels is set to four, the four universal wheels are arranged opposite to each other in pairs with respect to the bottoms of the two supporting feet, and brakes are installed on the four universal wheels.

[0008] As a preferred technical solution of the utility model, a limiting support is sleeved on the upper end of the stirring shaft, and the right end of the limiting support is connected to the right inner wall of the reactor.

[0009] As a preferred technical solution of the utility model, a gate valve is installed on the water delivery pipeline.

[0010] As a preferred technical solution of the utility model, the number of the spray pipes and the water pipes are both set to two, and both are symmetrically arranged about the left and right axes of the reactor.

[0011] As a preferred technical solution of the present utility model, the number of the connecting piece and the cleaning nozzle are both set to be multiple.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model provides a plurality of water delivery pipes, spray pipes, cleaning nozzles and connectors, and utilizes the interaction between them, so as to facilitate the cleaning of the inside of the reactor and reduce the difficulty of cleaning.

[0014] 2. The utility model is provided with universal wheels, so that the device can be conveniently transferred to a desired position, saving time and effort and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 It is a front schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1. Shell; 2. Support feet; 3. Universal wheels; 4. Reactor; 5. Column; 6. Inlet; 7. Motor; 8. Coupling; 9. Agitator shaft; 10. Limit support; 11. Spray pipe; 12. Cleaning nozzle; 13. Connector; 14. Water pipe; 15. Outlet; 16. Valve. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The different types of section lines in the drawings in the embodiments of the utility model are not marked according to the national standard, nor are there any requirements for the materials of the components, but are used to distinguish the cross-sectional views of the components in the drawings.

[0021] See also Figure 1-3 A gas phase rearrangement process system for producing caprolactam comprises a shell 1 and a reactor 4. The reactor 4 is arranged in the middle of the shell 1. A feed port 6 is arranged at the upper left end of the reactor 4. A discharge port 15 is arranged in the middle of the bottom of the reactor 4. A valve 16 is installed on the discharge port 15. The top of the feed port 6 passes through the top of the shell 1 and extends upward. Support legs 2 are arranged on both sides of the bottom of the shell 1. Universal wheels 3 are installed at the bottom of the two support legs 2. A motor 7 is installed on the top of the shell 1. The output shaft of the motor 7 passes through the top of the shell 1 and is connected to the internal coupling 8. A stirring shaft 9 is vertically arranged inside the reactor 4, and the upper end of the stirring shaft 9 passes through the top of the reactor 4 and is connected to the coupling 8. Both sides of the bottom of the reactor 4 are connected to the inner bottom end of the shell 1 through the columns 5. A cleaning nozzle 12 is embedded in the side wall of the reactor 4, and a spray pipe 11 is arranged on the outside of the reactor 4. The spray pipe 11 is connected to the inner wall of the shell 1 through a connector 13. A water pipe 14 is connected to one side of the spray pipe 11, and one end of the water pipe 14 passes through the side wall of the shell 1 and extends outward, and one end of the cleaning nozzle 12 is connected to the spray pipe 11.

[0022] The number of the universal wheels 3 is four, and the four universal wheels 3 are arranged opposite to each other in pairs with respect to the bottoms of the two supporting legs 2 . Brakes are installed on the four universal wheels 3 .

[0023] The upper end of the stirring shaft 9 is sleeved with a limiting support 10 , and the right end of the limiting support 10 is connected to the right inner wall of the reaction kettle 4 .

[0024] Wherein, a gate valve is installed on the water delivery pipeline 14.

[0025] There are two spray pipes 11 and two water pipes 14 , and they are both symmetrically arranged with respect to the reactor 4 .

[0026] The number of the connecting parts 13 and the number of the cleaning nozzles 12 are both set to be multiple.

[0027] The working principle and use process of the utility model are as follows: first, the raw materials for producing caprolactam are injected into the reactor 4 from the feed port 6 of the reactor 4, and then the motor 7 is started and the stirring shaft 9 is driven by the coupling 8 to mix and stir the raw materials in the reactor 4 to improve the reaction efficiency;

[0028] When the inside of the reactor 4 needs to be cleaned, cleaning water is input from the two water pipes 14, and the cleaning water is transported to the multiple cleaning nozzles 12 through the spray pipe 11. Finally, the cleaning water sprayed by the multiple cleaning nozzles 12 sprays and cleans the inside of the reactor 4, and the cleaning wastewater is discharged from the discharge port 15, so that the inside of the reactor 4 can be cleaned conveniently, reducing the difficulty of cleaning;

[0029] When the system needs to be transferred, it is transferred through the multiple universal wheels 3 at the bottom. When it is transferred to the required position, it is braked by the brakes on the universal wheels 3. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0030] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A gas phase rearrangement process system for producing caprolactam, comprising a shell (1) and a reaction kettle (4), characterized in that: A reaction kettle (4) is arranged in the middle of the shell (1), a feed inlet (6) is arranged at the upper left end of the reaction kettle (4), a discharge port (15) is arranged in the middle of the bottom of the reaction kettle (4), a valve (16) is installed on the discharge port (15), the top of the feed inlet (6) passes through the top of the shell (1) and extends upwards, supporting feet (2) are arranged on both sides of the bottom of the shell (1), and universal wheels (3) are installed at the bottom of the two supporting feet (2), a motor (7) is installed on the top of the shell (1), the output shaft of the motor (7) passes through the top of the shell (1) and is connected to the internal coupling (8), and a stirring wheel (16) is arranged vertically inside the reaction kettle (4). A stirring shaft (9), the upper end of which passes through the top of the reactor (4) and is connected to the coupling (8), both sides of the bottom of the reactor (4) are connected to the inner bottom end of the shell (1) through columns (5), a cleaning nozzle (12) is embedded on the side wall of the reactor (4), a spray pipe (11) is arranged on the outside of the reactor (4), the spray pipe (11) is connected to the inner wall of the shell (1) through a connecting piece (13), one side of the spray pipe (11) is connected to a water supply pipe (14), one end of the water supply pipe (14) passes through the side wall of the shell (1) and extends outward, and one end of the cleaning nozzle (12) is connected to the spray pipe (11).

2. A gas phase rearrangement process system for caprolactam production according to claim 1, characterized in that: The number of the universal wheels (3) is set to four, and the four universal wheels (3) are arranged opposite to each other in pairs with respect to the bottoms of the two supporting legs (2), and brakes are installed on the four universal wheels (3).

3. A gas phase rearrangement process system for caprolactam production according to claim 1, characterized in that: A limiting support member (10) is sleeved on the upper end of the stirring shaft (9), and the right end of the limiting support member (10) is connected to the right inner wall of the reaction kettle (4).

4. A gas phase rearrangement process system for caprolactam production according to claim 1, characterized in that: A gate valve is installed on the water delivery pipeline (14).

5. A gas phase rearrangement process system for caprolactam production according to claim 1, characterized in that: The number of the spray pipe (11) and the water pipe (14) is set to two, and both are arranged symmetrically with respect to the left and right axes of the reaction kettle (4).

6. A gas phase rearrangement process system for caprolactam production according to claim 1, characterized in that: The number of the connecting piece (13) and the number of the cleaning nozzle (12) are both set to be multiple.

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