Pipeline condensation reaction device for producing 2, 6-dibromo-4-nitroaniline

Abstract

The utility model relates to a pipeline condensation reaction device for producing 2, 6-dibromo-4-nitroaniline, which is applied to the technical field of tubular reactors, and realizes that when the pipeline condensation reaction device is used, precipitates and impurities can be filtered through a filter screen, the phenomenon that the inner wall of a pipeline is blocked can be avoided, and meanwhile, a time controller is started to control the operation of the pipeline. An alarm can be started regularly to remind a worker to clean a filter screen, an electromagnetic valve is closed at the moment, one end of the filter is closed, then an electric push rod is started, a connecting plate drives a sealing plug to move to be attached to the inner wall of the device body, the sealing plug and the inner wall of a connecting opening are clamped and sealed at the moment, the interior of the filter is in a sealed state, and then a cover is unscrewed; the water outlet is opened, the filter screen in the filter can be washed by the aid of a water gun, sewage generated during washing is discharged from the water outlet at the bottom, and the effects of filtering liquid to avoid pipeline blockage and regularly cleaning the filter screen are effectively achieved.

Description

Technical Field

[0001] The utility model relates to a pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline, in particular to a pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline applied in the technical field of tubular reactors. Background Art

[0002] The pipeline condensation reaction device is a device for performing chemical reactions. Different reactions may require devices with different structures and functions. Among them, the 2,6-dibromo-4-nitroaniline production device includes a synthesis kettle, a plate and frame filter, a flash tank and a product storage tank which are connected in sequence. A gas inlet is provided at the bottom of the synthesis kettle, and a washing water inlet is provided at the top of the plate and frame filter. The bromine production device includes a brine pump, a blow-out tower, an absorption tower, an enriched liquid storage tank, a heat exchanger, a distillation tower, a bromine water separator and a bromine storage tank. The outlet of the brine pump is connected to the top of the blow-out tower through a raw material pipeline. A chlorine gas inlet pipe is provided on the raw material pipeline. The liquid phase outlet of the plate and frame filter is connected to the outlet of the brine pump on the one hand, and can also be connected to the material inlet of the synthesis kettle on the other hand. The outlet of the bromine storage tank is connected to the material inlet of the synthesis kettle.

[0003] The Chinese patent CN206587716U specification discloses a pipeline continuous condensation reaction device, including a preheating mixer, a metering pump, a reactor, a vacuum pump, a fraction storage tank and a condensation liquid storage tank connected in sequence, characterized in that the reactor is a tubular reactor, the diameter of the reactor is variable, and a reflux pipe and a condenser are connected above the large diameter pipe. The utility model improves the selectivity of the condensation reaction, reduces the generation of by-products, improves the generation of the target product, reduces labor intensity, and ensures stable production.

[0004] When the existing pipeline condensation reaction device for the production of 2,6-dibromo-4-nitroaniline is in use, solid precipitation or by-products may be generated during the reaction process, which may easily lead to blockage of narrow parts of the pipeline, affecting the continuous progress of the reaction and material transmission. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that when the existing pipeline condensation reaction device for the production of 2,6-dibromo-4-nitroaniline is in use, solid precipitation or by-products may be generated during the reaction process, which may easily lead to blockage of the narrow part of the pipeline, affecting the continuous progress of the reaction and material transmission.

[0006] In order to solve the above problems, the utility model provides a pipeline condensation reaction device for the production of 2,6-dibromo-4-nitroaniline, including a device body, a connecting port is cut out on the side wall of the device body, a filter is threadedly connected to the inner wall of the connecting port, an end of the filter away from the device body is threadedly connected to a solenoid valve, an end of the solenoid valve away from the filter is threadedly connected to a pipeline, a filter screen is fixedly connected to the middle of the inner wall of the filter, drain ports are symmetrically cut out on the upper and lower side walls of the filter, a cover is threadedly connected to the drain port, threaded heads are symmetrically fixedly connected to both ends of the filter, and the threaded heads are respectively threadedly connected to the connecting port and the solenoid valve, an electric push rod is symmetrically fixedly connected to the inner wall of the device body located at the outer circle of the connecting port, an end of the electric push rod away from the device body is fixedly connected to a connecting plate, an end of the connecting plate close to the connecting port is fixedly connected to a sealing plug, and the sealing plug is engaged with the connecting port.

[0007] In the above pipeline condensation reaction device, the effects of filtering the liquid to avoid pipeline blockage and regularly cleaning the filter screen are effectively achieved.

[0008] As a further improvement of the present application, a silicone plug is fixedly connected to the middle portion of the inner wall of the cover, and the silicone plug is engaged with the drain outlet.

[0009] As a further improvement of the present application, the filter cross-sections located at the outer ring of the threaded head are fixedly connected with sealing rings, and the sealing rings are respectively fitted with the solenoid valve and the connecting port.

[0010] As a further improvement of the present application, a hook is fixedly connected to the outer wall of the device body located on the side of the connection port, and a cleaning brush is hung on the hook.

[0011] As another improvement of the present application, the top end of the cleaning brush is fixedly connected to a connecting rod, a hanging rope is sleeved on the connecting rod, and the hanging rope is hung on the hook.

[0012] As another improved supplement of the present application, the length of the cleaning brush is smaller than the diameter of the filter screen.

[0013] As another improved supplement of the present application, a time controller and an alarm are fixedly connected to the device body, and the time controller is electrically connected to the alarm.

[0014] In summary, this solution can be achieved: when using a pipeline condensation reaction device, the filter can be threadedly fixed to the connection port on the device body through the threaded head, and then the other end can be threadedly fixed to the solenoid valve, and the other end of the solenoid valve can be threadedly fixed to the pipeline. At this time, when the device body is running, the liquid can be filtered through the filter net to filter the sediment and impurities before flowing into the pipeline, so as to avoid the phenomenon of clogging of the inner wall of the pipeline. At the same time, the time controller can be turned on to regularly turn on the alarm to remind the staff to clean the filter net. At this time, the solenoid valve is closed, one end of the filter is closed, and then the electric push rod is turned on to drive the sealing plug located in the connecting plate of the device body to move to fit with the inner wall of the device body. At this time, the sealing plug is engaged and sealed with the inner wall of the connecting port. At this time, the filter is in a sealed state, and then the lid is unscrewed and the drain port is opened. The filter net in the filter can be flushed with the help of a water gun, and the sewage generated during flushing is discharged from the drain port at the bottom, which effectively achieves the effect of filtering the liquid to avoid pipeline clogging and regularly cleaning the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric diagram of a pipeline condensation reaction device according to the first embodiment of the present application;

[0016] Figure 2 This is an exploded view of a pipeline condensation reaction device according to the first embodiment of the present application;

[0017] Figure 3 This is a filter installation structure diagram of the first embodiment of the present application;

[0018] Figure 4 This is a filter structure diagram of the first and second embodiments of the present application;

[0019] Figure 5 This is a diagram of the sealing plug installation structure of the first embodiment of the present application;

[0020] Figure 6 This is a structural diagram of a cleaning brush according to a second embodiment of the present application;

[0021] Figure 7 This is a partial structural diagram of a cleaning brush according to the second embodiment of the present application.

[0022] Description of the numbers in the figure:

[0023] 1. Device body; 2. Pipe; 3. Filter; 4. Solenoid valve; 5. Hook; 6. Connecting port; 7. Sealing plug; 8. Threaded head; 9. Filter; 10. Cover; 11. Drain port; 12. Silicone plug; 13. Connecting plate; 14. Electric push rod; 15. Cleaning brush; 16. Hanging rope; 17. Connecting rod; 18. Time controller; 19. Alarm; 20. Sealing ring. DETAILED DESCRIPTION

[0024] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0025] The first implementation method:

[0026] Figure 1-5 A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline is shown, comprising a device body 1, a connection port 6 is cut on the side wall of the device body 1, a filter 3 is threadedly connected to the inner wall of the connection port 6, an end of the filter 3 away from the device body 1 is threadedly connected to an electromagnetic valve 4, an end of the electromagnetic valve 4 away from the filter 3 is threadedly connected to a pipeline 2, a filter screen 9 is fixedly connected to the middle of the inner wall of the filter 3, drain ports 11 are symmetrically cut on the upper and lower side walls of the filter 3, a cover 10 is threadedly connected to the drain port 11, and thread heads 8 are symmetrically fixedly connected to both ends of the filter 3, and the thread heads 8 are respectively connected to the connection port 11 and the connection port 12. 6. The solenoid valve 4 is threadedly connected, and an electric push rod 14 is symmetrically fixedly connected to the inner wall of the device body 1 located at the outer circle of the connecting port 6. The electric push rod 14 is fixedly connected to a connecting plate 13 at one end away from the device body 1, and a sealing plug 7 is fixedly connected to the end of the connecting plate 13 close to the connecting port 6, and the sealing plug 7 is engaged with the connecting port 6. The cross-section of the filter 3 located at the outer circle of the threaded head 8 is fixedly connected with a sealing ring 20, and the sealing ring 20 is respectively fitted with the solenoid valve 4 and the connecting port 6. A time controller 18 and an alarm 19 are fixedly connected to the device body 1, and the time controller 18 is electrically connected to the alarm 19.

[0027] This solution can be achieved: when using the pipeline condensation reaction device, the filter 3 can be threadedly fixed to the connecting port 6 on the device body 1 through the threaded head 8, and then the other end can be threadedly fixed to the solenoid valve 4, and the other end of the solenoid valve 4 can be threadedly fixed to the pipeline 2. At this time, when the device body 1 is running, the liquid can be filtered through the filter screen 9 before flowing into the pipeline 2. The phenomenon of clogging of the inner wall of the pipeline 2 can be avoided. At the same time, the time controller 18 is turned on, and the alarm 19 can be turned on at a fixed time to remind the staff to clean the filter screen 9. At this time, the solenoid valve 4 is closed, and one end of the filter 3 is closed. Then the electric push rod 14 is turned on, and the connecting plate 13 located in the device body 1 drives the sealing plug 7 to move to fit with the inner wall of the device body 1. At this time, the sealing plug 7 is engaged and sealed with the inner wall of the connecting port 6. At this time, the filter 3 is in a sealed state, and then the cover 10 is unscrewed, and the drain port 11 is opened. The filter screen 9 in the filter 3 can be flushed with the help of a water gun, and the sewage generated during the flushing is discharged from the drain port 11 at the bottom, effectively achieving the effect of filtering the liquid to avoid clogging of the pipeline 2 and regularly cleaning the filter screen 9.

[0028] The second implementation method:

[0029] Figure 4 and Figure 6-7It is shown that a silicone plug 12 is fixedly connected to the middle of the inner wall of the cover 10, and the silicone plug 12 is engaged with the drain port 11, and a hook 5 is fixedly connected to the outer wall of the device body 1 located on the side of the connection port 6, and a cleaning brush 15 is hung on the hook 5. A connecting rod 17 is fixedly connected to the top of the cleaning brush 15, and a hanging rope 16 is sleeved on the connecting rod 17, and the hanging rope 16 is hung on the hook 5, and the length of the cleaning brush 15 is less than the diameter of the filter 9.

[0030] This solution can achieve the following: when using the pipeline condensation reaction device, the silicone plug 12 can be inserted into the drain port 11 and then tightened and fixed by the cover 10. At this time, the silicone plug 12 is engaged with the inner wall of the connecting port 6 to prevent the liquid from remaining in the connecting port 6 when passing through the filter 3. When cleaning the filter 9, the filter 9 is located in the middle of the connecting port 6 to divide the filter 3 into two symmetrical halves. The connecting rod 17 can be held by hand, and the cleaning brush 15 can be inserted into the filter 3 from the side of the filter 9 to brush and clean the filter 9. After cleaning, the cleaning brush 15 can be hung on the hook 5 through the hanging rope 16 for easy use next time.

[0031] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline, comprising a device body (1), characterized in that: The side wall of the device body (1) is provided with a connection port (6), the inner wall of the connection port (6) is threadedly connected to a filter (3), the end of the filter (3) away from the device body (1) is threadedly connected to a solenoid valve (4), the end of the solenoid valve (4) away from the filter (3) is threadedly connected to a pipe (2), a filter screen (9) is fixedly connected to the middle of the inner wall of the filter (3), the upper and lower side walls of the filter (3) are symmetrically provided with drainage ports (11), and a cover (10) is threadedly connected to the drainage port (11). ), the filter (3) is symmetrically fixedly connected with threaded heads (8) at both ends, and the threaded heads (8) are respectively threadedly connected to the connection port (6) and the solenoid valve (4), and the inner wall of the device body (1) located at the outer circle of the connection port (6) is symmetrically fixedly connected with an electric push rod (14), and the end of the electric push rod (14) away from the device body (1) is fixedly connected with a connecting plate (13), and the end of the connecting plate (13) close to the connection port (6) is fixedly connected with a sealing plug (7), and the sealing plug (7) is engaged with the connection port (6).

2. A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline according to claim 1, characterized in that: A silicone plug (12) is fixedly connected to the middle portion of the inner wall of the cover (10), and the silicone plug (12) is engaged with the drain port (11).

3. A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline according to claim 1, characterized in that: The cross sections of the filter (3) located at the outer ring of the threaded head (8) are fixedly connected with sealing rings (20), and the sealing rings (20) are respectively fitted with the solenoid valve (4) and the connecting port (6).

4. A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline according to claim 3, characterized in that: A hook (5) is fixedly connected to the outer wall of the device body (1) located on the side of the connection port (6), and a cleaning brush (15) is hung on the hook (5).

5. A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline according to claim 4, characterized in that: The top end of the cleaning brush (15) is fixedly connected to a connecting rod (17), a hanging rope (16) is sleeved on the connecting rod (17), and the hanging rope (16) is hung on the hook (5).

6. A pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline according to claim 4, characterized in that: The length of the cleaning brush (15) is smaller than the diameter of the filter screen (9).

7. The pipeline condensation reaction device for producing 2,6-dibromo-4-nitroaniline according to claim 1, characterized in that: A time controller (18) and an alarm (19) are fixedly connected to the device body (1), and the time controller (18) and the alarm (19) are electrically connected.

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