Gas-liquid separation device for aniline production

Abstract

The utility model relates to a gas-liquid separation device for aniline production, which belongs to the technical field of aniline production and comprises a fixing frame, a raw material barrel is fixedly mounted at the top of one side of the fixing frame, a recycling barrel is fixedly mounted at the top of the other side of the fixing frame, and a separation component is arranged on the side surface of the raw material barrel; and the separation assembly comprises an exhaust pipe fixedly mounted at the top of the raw material barrel. According to the gas-liquid separation device for aniline production, materials generated in the aniline production process are pressurized and then injected into the raw material barrel along the feeding pipeline, after the materials enter the air inlet valve through the exhaust pipe at the top of the raw material barrel, the air inlet valve displays the current pressure intensity value of the exhaust pipe, and the materials enter the flow dividing barrel; when the exhaust port in the side face of the air guide cylinder is aligned with the air inlet and outlet in the side face of the flow dividing cylinder in the rotating process, the materials enter the condenser through the air inlet and outlet, and the materials are separated in the condenser.

Description

Technical Field

[0001] This utility model relates to the field of aniline production technology, specifically to a gas-liquid separation device for aniline production. Background Technology

[0002] Aniline is an important organic compound belonging to the aromatic amine class. It is a basic substance that decomposes easily upon exposure to light or oxidizing agents, and produces smoke when burned. Aniline is an important intermediate in the production of dyes, pharmaceuticals, and resins, and is also used in the manufacture of rubber vulcanization accelerators. It can also be used as a pesticide, such as herbicides, as a stabilizer for explosives, a solvent, and a raw material for the production of the indicator methyl orange. Industrially, aniline is mainly produced through the catalytic hydrogenation reduction of nitrobenzene, and can also be prepared by the reaction of phenol with ammonia, the latter often using the cumene process.

[0003] The catalytic hydrogenation reduction of nitrobenzene to produce aniline involves the simultaneous generation of aniline vapor and water vapor during the reduction reaction, which typically occurs at temperatures between 200 and 300°C. To separate these vapors, a gas-liquid separation device is usually required. Traditional gas-liquid separation devices typically use a condenser to separate the two. However, the vapor's passage time through the condenser is relatively short, resulting in incomplete water vapor separation. Furthermore, the separation time cannot be controlled, leading to poor flexibility. Therefore, a gas-liquid separation device for aniline production is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a gas-liquid separation device for aniline production, which has the advantages of good flexibility and high separation efficiency, and solves the problems of poor flexibility and inability to control separation time in traditional gas-liquid separation devices.

[0005] To achieve the aforementioned goals of high flexibility and high separation efficiency, this utility model provides the following technical solution: a gas-liquid separation device for aniline production, comprising a fixed frame, a raw material tank fixedly installed on the top of one side of the fixed frame, a recovery tank fixedly installed on the top of the other side of the fixed frame, and a separation component provided on the side of the raw material tank;

[0006] The separation assembly includes an exhaust pipe fixedly installed on the top of the raw material barrel, an air inlet valve fixedly installed at the bottom of the exhaust pipe, a flow divider cylinder located on the side of the air inlet valve, several condensers located on the outside of the flow divider cylinder, a dual-head motor located on the side of the flow divider cylinder, an air guide cylinder located on the side of the output shaft of the dual-head motor, a manifold cylinder located on the outside of the other end of the dual-head motor, an exhaust valve fixedly installed on the side of the manifold cylinder, and a suction pump located on the top of the exhaust valve.

[0007] Furthermore, the outer side of the annular surface of both the diverter and the manifold is provided with several evenly distributed air inlets and outlets, and the outer side of the air inlets and outlets is provided with connecting pipes that communicate with the condenser.

[0008] Furthermore, the air guide tubes are symmetrically distributed inside the splitter tube and the manifold tube and are slidably connected to the inner sidewalls of the splitter tube and the manifold tube.

[0009] Furthermore, the interior of the air guide tube is a hollow structure and the annular surface is provided with several matching air inlets and outlets for use by the splitter tube and the manifold.

[0010] Furthermore, the output shafts at both ends of the dual-head motor are respectively inserted into the interior of the splitter cylinder and the junction cylinder, and a connecting frame and a dual-head motor are fixedly installed on the opposite side surface of the splitter cylinder and the junction cylinder.

[0011] Furthermore, the air guide tube has an exhaust port on the side away from the dual-head motor, which is used in conjunction with the diverter tube and the manifold tube.

[0012] Furthermore, a pipe is provided on the side of the manifold and connected to an air outlet valve, and a pipe is provided on the top of the air outlet valve and connected to the air inlet of the air pump.

[0013] Furthermore, the bottom of the raw material barrel is provided with a feeding pipe, the bottom of the recycling barrel is provided with a discharging pipe, and the top of the air pump is provided with an air outlet pipe and is fixedly installed on the top of the recycling barrel.

[0014] Compared with the prior art, this utility model provides a gas-liquid separation device for aniline production, which has the following beneficial effects:

[0015] 1. This aniline production gas-liquid separation device pressurizes the material generated during the aniline production process and injects it into the raw material tank through the feed pipe. After the material enters the inlet valve through the exhaust pipe at the top of the raw material tank, the inlet valve displays the current pressure value of the exhaust pipe. The material enters the interior of the diverter cylinder and then enters the interior of the guide cylinder through the guide port on the side of the guide cylinder. The dual-head motor is started to drive the guide cylinder to rotate. When the exhaust port on the side of the guide cylinder passes the inlet and outlet ports on the side of the diverter cylinder during rotation, the material enters the interior of the condenser through the inlet and outlet ports, where the material is separated.

[0016] 2. This aniline production gas-liquid separation device operates by starting an air pump, which continuously extracts air from inside the manifold. The separated material enters the manifold from the outlet at the other end of the condenser. When the air inlet and outlet on the outside of the manifold align with the air outlet on the outside of the air guide tube, the material enters the air guide tube along the exhaust port. Under the continuous action of the air pump, the material inside the air guide tube is extracted along the air guide port. The separated material enters the recovery tank under the action of the air pump, thus realizing the gas-liquid separation of aniline. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged view of the A-structure;

[0019] Figure 3 This is a perspective view of the dual-head motor and air guide cylinder of this utility model.

[0020] In the diagram: 1. Fixing frame; 2. Raw material bucket; 21. Feed pipe; 3. Recycling bucket; 31. Discharge pipe; 4. Separation assembly; 41. Exhaust pipe; 42. Inlet valve; 43. Diverter; 44. Condenser; 45. Dual-head motor; 46. Air guide tube; 461. Air inlet; 462. Exhaust port; 47. Manifold; 48. Outlet valve; 49. Air pump. 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] Please see Figures 1 to 3 In this embodiment, an aniline production gas-liquid separation device includes a fixed frame 1, a raw material tank 2 is fixedly installed on the top of one side of the fixed frame 1, a recovery tank 3 is fixedly installed on the top of the other side of the fixed frame 1, and a separation component 4 is provided on the side of the raw material tank 2.

[0023] The separation assembly 4 includes an exhaust pipe 41 fixedly installed on the top of the raw material barrel 2, an air inlet valve 42 fixedly installed on the bottom of the exhaust pipe 41, a flow divider 43 located on the side of the air inlet valve 42, several condensers 44 located on the outside of the flow divider 43, a dual-head motor 45 located on the side of the flow divider 43, an air guide cylinder 46 located on the side of the output shaft of the dual-head motor 45, a manifold 47 located on the outside of the other end of the dual-head motor 45, an exhaust valve 48 fixedly installed on the side of the manifold 47, and a suction pump 49 located on the top of the exhaust valve 48.

[0024] In this embodiment, the outer sides of the annular surfaces of the splitter cylinder 43 and the manifold cylinder 47 are provided with several evenly distributed air inlets and outlets, and the outer sides of the air inlets and outlets are provided with connecting pipes that communicate with the condenser 44.

[0025] In this embodiment, the air guide tube 46 is symmetrically distributed inside the flow divider tube 43 and the flow combiner tube 47 and is slidably connected to the inner sidewalls of the flow divider tube 43 and the flow combiner tube 47.

[0026] In this embodiment, the air guide cylinder 46 has a hollow structure inside and a number of air guide ports 461 for use by the air inlet and outlet of the matching diverter cylinder 43 and the manifold cylinder 47 are opened on the annular surface.

[0027] In this embodiment, the output shafts at both ends of the dual-head motor 45 are inserted into the interior of the splitter cylinder 43 and the junction cylinder 47, respectively. A connecting frame and the dual-head motor 45 are fixedly installed on the opposite side surface of the splitter cylinder 43 and the junction cylinder 47.

[0028] In this embodiment, the air guide tube 46 has an exhaust port 462 on the side away from the dual-head motor 45, which is used in conjunction with the diverter tube 43 and the manifold tube 47.

[0029] It should be noted that during the installation process, the exhaust ports 46 on both sides of the dual-head motor 45 need to be staggered so that the two ends of the condenser 44 cannot be synchronously connected to the external pipes.

[0030] In this embodiment, a pipe is provided on the side of the manifold 47 and is connected to the air outlet valve 48, and a pipe is provided on the top of the air outlet valve 48 and is connected to the air inlet of the air pump 49.

[0031] In this embodiment, a feeding pipe 21 is provided at the bottom of the raw material barrel 2, a discharge pipe 31 is provided at the bottom of the recycling barrel 3, and an air outlet pipe is provided at the top of the air pump 49 and is fixedly installed at the top of the recycling barrel 3.

[0032] The working principle of the above embodiments is as follows:

[0033] The material produced during the aniline production process is pressurized and injected into the raw material barrel 2 through the feed pipe 21. After the material enters the air inlet valve 42 through the exhaust pipe 41 at the top of the raw material barrel 2, the air inlet valve 42 displays the current pressure value of the exhaust pipe 41. The material enters the interior of the diverter 43 and enters the interior of the air guide cylinder 46 through the air guide port 461 on the side of the air guide cylinder 46. The dual-head motor 45 is started to drive the air guide cylinder 46 to rotate. When the exhaust port 462 on the side of the air guide cylinder 46 passes through the air inlet and outlet on the side of the diverter 43 during rotation, the material enters the interior of the condenser 44 through the air inlet and outlet, where the material is separated.

[0034] In addition, by starting the air pump 49, the air pump 49 continuously extracts air from the inside of the manifold 47. The separated material enters the inside of the manifold 47 from the other end outlet of the condenser 44. When the air inlet and outlet on the outside of the manifold 47 are aligned with the air guide port 461 on the outside of the air guide cylinder 46, the material enters the inside of the air guide cylinder 46 along the exhaust port 462. Under the continuous action of the air pump 49, the material that has entered the inside of the air guide cylinder 46 is extracted along the air guide port 461. The separated material enters the inside of the recovery tank 3 under the action of the air pump 49.

[0035] Furthermore, by controlling the rotation speed of the dual-head motor 45, the air guide cylinder 46 rotates at different speeds within the diverter cylinder 43. This results in different durations of connection between the rotating exhaust port 462 and the inlet / outlet ports on the outside of the diverter cylinder 43, leading to different amounts of material entering the condenser 44. Additionally, since the air guide cylinders 46 at both ends of the dual-head motor 45 rotate at the same speed, the connection time between the air guide cylinders 46 and the diverter cylinder 43 and the condenser cylinder 47 is affected by the rotation speed of the dual-head motor 45. Consequently, the separation time of the material inside the condenser 44 also varies, thus achieving the goal of adjusting the material separation time. This solves the problems of poor flexibility and uncontrollable separation time in traditional gas-liquid separation devices.

[0036] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that performs control functions, and the existing publicly available power connection technologies are not described in detail in the text.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. Aniline production gas-liquid separation device, comprising a fixed frame (1), a raw material barrel (2) is fixedly installed at the top of one side of the fixed frame (1), and a recovery barrel (3) is fixedly installed at the top of the other side of the fixed frame (1), characterized in that: A separation component (4) is provided on the side of the raw material barrel (2); The separation assembly (4) includes an exhaust pipe (41) fixedly installed on the top of the raw material barrel (2), an air inlet valve (42) fixedly installed at the bottom of the exhaust pipe (41), a flow divider (43) located on the side of the air inlet valve (42), several condensers (44) located on the outside of the flow divider (43), a dual-head motor (45) located on the side of the flow divider (43), a guide cylinder (46) located on the side of the output shaft of the dual-head motor (45), a manifold (47) located on the outside of the other end of the dual-head motor (45), an exhaust valve (48) fixedly installed on the side of the manifold (47), and a suction pump (49) located on the top of the exhaust valve (48).

2. The gas-liquid separation device for aniline production according to claim 1, characterized in that: The outer side of the annular surface of the diverter (43) and the manifold (47) are provided with several evenly distributed air inlets and outlets, and the outer side of the air inlets and outlets is provided with connecting pipes that connect to the condenser (44).

3. The gas-liquid separation device for aniline production according to claim 1, characterized in that: The air guide tube (46) is symmetrically distributed inside the diverter tube (43) and the manifold tube (47) and is slidably connected to the inner sidewall of the diverter tube (43) and the manifold tube (47).

4. The gas-liquid separation device for aniline production according to claim 1, characterized by: The air guide tube (46) has a hollow structure inside and several air guide ports (461) for use by the air inlet and outlet of the matching diverter tube (43) and the manifold tube (47) are opened on the annular surface.

5. The gas-liquid separation device for aniline production according to claim 1, characterized by: The output shafts at both ends of the dual-head motor (45) are inserted into the interior of the splitter cylinder (43) and the junction cylinder (47), respectively. The opposing surfaces of the splitter cylinder (43) and the junction cylinder (47) are provided with connecting frames and the dual-head motor (45) for fixed installation.

6. The gas-liquid separation device for aniline production according to claim 1, characterized by: The air guide tube (46) has an exhaust port (462) on the side away from the dual-head motor (45) for use with the diverter tube (43) and the manifold tube (47).

7. The gas-liquid separation device for aniline production according to claim 1, characterized by: The side of the manifold (47) is provided with a pipe and an air outlet valve (48) connected together, and the top of the air outlet valve (48) is provided with a pipe and an air inlet of the air pump (49) connected together.

8. The gas-liquid separation device for aniline production according to claim 1, characterized by: The bottom of the raw material barrel (2) is provided with a feeding pipe (21), the bottom of the recycling barrel (3) is provided with a discharge pipe (31), and the top of the air pump (49) is provided with an air outlet pipe and is fixedly installed on the top of the recycling barrel (3).

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