CN217527497U - Continuous Reactor - Google Patents

Abstract

The present application provides a continuous reaction apparatus comprising: the device comprises a water bath tank, a feeding port, a discharging port, a first water inlet, a water outlet and a tubular reaction system. According to the continuous reaction device, a traditional kettle type reaction device is changed into a tubular reaction device, so that the heat exchange area is increased, a large amount of heat generated in the reaction can be timely removed through water bath, the material spraying accident caused by the fact that the heat generated in the reaction cannot be timely removed is reduced, the safety of the reaction process is improved, the heat exchange efficiency is improved, and the energy loss is reduced; the continuous reaction device can continuously feed materials, and improves the production efficiency. In addition, the reaction liquid is stirred by turbulence generated when flowing through the blades in the reaction tube, and the turbulence can also prevent a pipeline from being blocked by larger floccules or sediment generated in the reaction, so that the maintenance frequency of the continuous reaction device can be reduced, and the production cost is reduced.

Description

Continuous Reactor

technical field

The present application relates to the technical field of chemical engineering, and in particular, to a continuous reaction device.

Background technique

In chemical production, most of the reactions are carried out under liquid homogeneous conditions, such as the production process of 3,4,5-trifluorophenylboronic acid. The existing method is to add the reaction substrate into the kettle type reactor to carry out the stirring reaction. This method is a batch reaction, that is, the substrate in the reaction kettle can be used for the next batch of reaction after the reaction is completed, and In the reaction, heat is often released, and some reactions are violently exothermic, and the heat generated in the reaction is difficult to be transferred in time, resulting in spraying of materials and even fire, which seriously threatens production safety.

Utility model content

The present application provides a continuous reaction device, which is used to solve the problem that the above-mentioned existing tank reactor cannot produce continuously, and the heat generated in the reaction process is difficult to be removed in time, resulting in a safety accident of material spraying.

The application provides a continuous reaction device, comprising: a water bath, a first water inlet, a water outlet and a tubular reaction system;

The tubular reaction system includes a feed pipe, a reaction pipe and a discharge pipe. The reaction pipe is set in the water bath, the reaction pipe is connected between the feed pipe and the discharge pipe, and the feed pipe and the discharge pipe are upward from the water bath. protruding from the top of the water bath;

The first water inlet is arranged at a position close to the bottom on one side of the water bath, and the water outlet is arranged on the upper part of one side of the water bath, away from the first water inlet;

The feeding port of the feeding pipe is close to the first water inlet; the discharging port of the discharging pipe is close to the water outlet;

The reaction tube includes a reaction tube body, a blade arranged in the reaction tube body, a fixing rod for fixing and connecting the blade, and a connecting rib for fixing the fixing rod in the reaction tube body.

Optionally, a plurality of reaction tubes are arranged in parallel, and adjacent reaction tubes are communicated end-to-end through a plurality of connecting tubes.

Optionally, the continuous reaction device further includes a thermometer, which is arranged on the top of the water bath, and is close to the water outlet and extends into the water bath.

Optionally, a position close to the bottom of one side of the water bath is provided with a second water inlet, and the second water inlet is connected to a water distribution pipe arranged in the water bath.

Optionally, the second water inlet is connected to a steam pipe, and a steam valve is provided on the steam pipe.

Optionally, the second water inlet is also connected to a cold water pipe, and the cold water pipe is provided with a cold water valve.

Optionally, the water distribution pipe includes a water distribution pipe body and a plurality of water distribution holes distributed on the water distribution pipe body;

One end of the water distribution pipe away from the second water inlet is closed.

Optionally, a plurality of blades are provided, and the blades are in the shape of three-blade fan blades.

The continuous reaction device provided by the application changes the traditional kettle-type reaction device into a tubular reaction device, which increases the heat exchange area, and the heat generated in the reaction can be removed in time through the water bath, thereby reducing the heat generated in the reaction. The material spraying accident caused by not being removed in time improves the safety of the reaction process, improves heat exchange efficiency, and reduces energy loss; the continuous reaction device of the present application can continuously feed materials and improve production efficiency. In addition, when the reaction liquid flows through the blades in the reaction tube, a turbulent flow is generated to stir the reaction liquid. This turbulent flow can also avoid the production of large flocs or sediments in the reaction to block the pipeline, which can reduce the maintenance of the continuous reaction device. frequency, reducing production costs.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic diagram of a continuous reaction device provided by an embodiment of the application;

2 is a schematic structural diagram of a reaction tube provided by an embodiment of the application;

3 is a schematic structural diagram of a blade provided by an embodiment of the present application;

4 is a schematic structural diagram of a blade provided by another embodiment of the present application;

5 is a schematic diagram of a continuous reaction device provided by another embodiment of the present application;

FIG. 6 is a schematic diagram of a water distribution pipe provided by an embodiment of the present application.

Description of reference numbers:

1. Water bath box;

101. Feed inlet;

102. Discharge port;

2. The first water inlet;

3. Water outlet;

4. Tubular reaction system;

41. Feeding pipe;

42. Reaction tube;

4201. The reaction tube body;

4202, fixed rod;

4203, connecting ribs;

4204, blade;

43. Discharge pipe;

44. Connecting pipe;

5. Thermometer;

6. Water distribution pipe;

601. Water distribution pipe body;

602, water distribution hole;

7. The second water inlet;

8. Cold water pipe;

81. Cold water valve;

9. Steam pipeline;

91. Steam valve.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. Example. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work also fall within the protection scope of the present application.

As shown in FIG. 1 and FIG. 2 , the present application provides a continuous reaction device, comprising: a water bath box 1 , a first water inlet 2 , a water outlet 3 and a tubular reaction system 4 ;

The tubular reaction system 4 includes a feed pipe 41, a reaction pipe 42 and a discharge pipe 43. The reaction pipe 42 is arranged in the water bath box. The reaction pipe 42 is connected between the feed pipe 41 and the discharge pipe 43. The feed pipe 41 And the discharge pipe 43 extends upward from the top of the water bath 1 from the water bath 1;

The first water inlet 2 is arranged on one side of the water bath box 1 near the bottom, and the water outlet 3 is arranged on the upper part of one side of the water bath box 1, and is far from the first water inlet 2;

The feeding port 101 of the feeding pipe 41 is close to the first water inlet 2; the discharging port 102 of the feeding pipe 43 is close to the water outlet 3;

The reaction tube 42 includes a reaction tube body 4201 , a blade 4204 disposed in the reaction tube body 4201 , a fixing rod 4202 for fixing and connecting the blade 4204 , and a connecting rib 4203 for fixing the fixing rod 4202 in the reaction tube body 4201 .

In this application, the water bath 1 is used to exchange heat for the tubular reaction system 4. During production, water at a certain temperature, such as warm water with a temperature of 50 to 60°C, is input into the water bath 1 from the first water inlet 2. The excess water overflows from the water outlet 3, enters the water heater, and is reheated for recycling. In addition, the heat exchange medium in the water bath box 1 may be added with water of different temperatures depending on the specific reaction, or may be heat-conducting oil of different temperatures.

In the tubular reaction system 4, the feeding pipe 41 is used to introduce the reaction liquid (in this application, the reaction substrate of 3,4,5-trifluorobenzeneboronic acid is taken as an example) into the reaction pipe 42 to react, and the material is discharged. Pipe 43 outputs the reacted material.

In the reaction tube 42, the blade 4204 is fixedly connected to the fixing rod 4202, the fixing rod 4202 is the same length as the reaction tube body 4201, the fixing rod 4202 is fixed in the reaction tube body 4201 by a plurality of connecting ribs 4203, and the blade 4204 is in the reaction material When the liquid flows through, it plays the role of stirring the reaction feed liquid. The stirring is not the mechanical stirring of the reaction feed liquid by the blade 4204, but the turbulent flow generated by the reaction feed liquid when it flows through the blade 4204. Within a certain range, the greater the flow rate of the feed liquid, the more intense the turbulent flow, and the more intense the stirring. Therefore, the stirring rate of the reaction feed liquid can be changed by adjusting the flow rate of the reaction feed liquid. In addition, the blade 4204 also has the function of slowing down the flow rate of the reaction feed liquid, thereby prolonging the reaction time of the reaction feed liquid and improving the reaction efficiency of the substrate.

In an achievable manner, the fixing rod 4202 is longer than the reaction tube body 4201, and both ends of the fixing rod 4202 are also fixed on the pipeline. The other end is fixed on the pipe at the connection between the reaction tube 42 and the discharge tube 43, and this connection can further enhance the firmness of the fixing rod.

In an achievable manner, a temperature detection device, such as a thermometer, is further provided outside the tube side of the reaction tube 42 , for real-time detection of the temperature of the reaction in the reaction tube 42 .

In actual production, the reaction material liquid will be pressurized and transported into the tubular reaction system 4 through the feeding pump. After the reaction material liquid enters the reaction pipe 42, it is subjected to the force of the blades 4204 fixed on the fixed rod 4202 during the forward process. Blocking, turbulent flow will be formed between the blades, and the stirring of the reaction feed liquid will be completed. At the same time, a reaction will occur between the substrates in the reaction feed liquid to generate products, and the products generated by the reaction will enter the discharge pipe 43 and then be output from the discharge port 102. The reaction process is thus completed.

Optionally, a plurality of blades 4204 are provided, and the blades 4204 are in the shape of a three-blade fan blade, and may also be in a four-blade fan blade shape.

The three-blade fan-shaped blade, when the reaction liquid passes through, due to the blocking of the three-blade fan blades, when the reaction liquid is in the gap between the fan blades, a turbulent flow is generated, thereby playing a role in stirring the reaction liquid. There are gaps between adjacent fan blades, and part of the reaction liquid is blocked by the fan blades, and part of it can pass through the gap. This setting can increase the turbulent flow and improve the stirring effect. Providing a plurality of blades can improve the stirring efficiency in the reaction, thereby improving the reaction efficiency.

As shown in FIG. 3 , in an achievable manner, the blade 4204 is composed of a disc with a plurality of leak holes distributed. When the reaction liquid passes through the blade 4204, it is blocked by the blade 4204, and the reaction liquid passes through the leak holes. Then, the turbulent flow is formed to be stirred. This way of arranging the blades 4204 can reduce the impact of the reaction liquid on the blades 4204, and can prolong the service life of the blades 4204.

As shown in FIG. 4 , in another achievable manner, the blades 4204 are distributed on the fixed rod 4202 in a continuous spiral shape, and its structure is similar to that of an auger, but does not rotate. After the reaction liquid enters the reaction tube 42, it collides with Until the helical blade forms turbulent flow and is stirred, and the path of the reaction liquid flowing through the above-mentioned helical blade 4204 is helical, this way of setting the blade 4204 can extend the travel distance of the reaction material liquid, thereby further increasing the reaction of the reaction liquid. In addition, the generated turbulent flow can avoid large precipitates or flocs in the reaction, and can also tear and pulverize the large precipitates or flocs produced in the reaction into fine particles.

The continuous reaction device provided by the application changes the traditional kettle-type reaction device into a tubular reaction device, which increases the heat exchange area, and the heat generated in the reaction can be removed in time through the water bath, thereby reducing the heat generated in the reaction. The material spraying accident caused by not being removed in time improves the safety of the reaction process, improves heat exchange efficiency, and reduces energy loss; the continuous reaction device of the present application can continuously feed materials and improve production efficiency. In addition, when the reaction liquid flows through the blades in the reaction tube, a turbulent flow is generated to stir the reaction liquid. This turbulent flow can also avoid the production of large flocs or sediments in the reaction to block the pipeline, which can reduce the maintenance of the continuous reaction device. frequency, reducing maintenance costs.

As shown in FIG. 5 , optionally, a plurality of reaction tubes 42 are arranged in parallel, and adjacent reaction tubes 42 are connected end-to-end through connecting tubes 44 .

In the present application, a plurality of reaction tubes 42 are provided, and adjacent reaction tubes 42 are connected end-to-end through connecting tubes 44. This connection method of connecting a plurality of reaction tubes 42 in series can extend the distance that the reaction liquid flows, thereby Increase the reaction time of the reaction solution, thereby further improving the reaction efficiency of the substrate. In addition, the parallel arrangement of the reaction tubes can save space and improve the space utilization rate of the water bath box 1 . In the present application, the plurality of reaction tubes 42 arranged in parallel may be arranged in a horizontal direction, may also be arranged in a vertical direction, or may be a combination of the above two methods.

As shown in FIG. 5 , optionally, the continuous reaction device further includes a thermometer 5 . The thermometer 5 is arranged on the top of the water bath box 1 and is close to the water outlet 3 and extends into the water bath box 1 .

In the present application, the thermometer 5 can monitor the temperature in the water bath 1 in real time, so as to monitor the reaction temperature, and it is convenient for the staff to adjust the temperature of the water bath in time.

As shown in FIG. 5 , optionally, a second water inlet 7 is provided on one side of the water bath box 1 near the bottom, and the second water inlet 7 is connected to the water distribution pipe 6 arranged in the water bath box 1 .

In this application, since the temperature of the medium input from the first water inlet 2 is not easily changed in actual use, a second water inlet 7 is provided. Adjust the medium according to the temperature.

As shown in FIG. 6 , optionally, the water distribution pipe 6 includes a water distribution pipe body 601 and a plurality of water distribution holes 602 distributed on the water distribution pipe body 601 ; one end of the water distribution pipe 6 away from the second water inlet 7 is closed.

In this application, the water distribution pipe 6 is arranged at a position close to the bottom of the water bath box 1, and the medium input by the water distribution pipe 6 enters the water bath box 1 from the bottom to the top from the water distribution pipe body 601 through the water distribution hole 602. During the flow on the ground, it can be mixed with the original heat exchange medium in the water bath box 1 to complete heat transfer without stirring, so the production cost can be saved; the water distribution pipe body 601 is provided with multiple water distribution holes 602, which can make The medium output from the water distribution pipe 6 is evenly distributed.

As shown in FIG. 5 , optionally, the second water inlet 7 is connected to a steam pipe 9 , and a steam valve 91 is provided on the steam pipe 9 .

As shown in FIG. 5 , optionally, the second water inlet 7 is also connected to the cold water pipe 8 , and the cold water pipe 8 is provided with a cold water valve 81 .

In the present application, a second water inlet 7 is provided on one side of the water bath close to the bottom. The second water inlet 7 is connected to the water distribution pipe 6 arranged in the water bath 1, and the cold water pipe 8 and the steam pipe 9 are respectively connected to the second water inlet 7. The water inlet 7 is connected, and the cold water pipe 8 and the steam pipe 9 are respectively provided with a cold water valve 81 and a steam valve 91. During production, the operator can according to the temperature of the water bath in the water bath box 1 monitored by the thermometer 5, by opening The cold water valve 81 or the steam valve 91 regulates the temperature of the water bath.

When the temperature of the water bath is higher than the preset high temperature, by closing the first water inlet 2, the input of warm water into the water bath box 1 is suspended, the steam valve 91 is kept closed, and the cold water valve 81 is opened, and the water is input into the water bath box 1 through the water distribution pipe 6. Cold water (temperature is 0-5°C); when the temperature of the water bath is lower than the preset low temperature, by closing the first water inlet 2, suspending the input of warm water into the water bath box 1, keeping the cold water valve 81 closed, and opening the steam valve 91, Steam is input into the water bath box 1 through the water distribution pipe 6 (temperature is 80-120° C.). In addition, when the medium entering the water bath box 1 from the first water inlet 2 is heat transfer oil, correspondingly, the steam pipe 9 supplies a higher heat transfer oil temperature than the original heat transfer oil in the water bath box 1 (for example, the temperature is 50-60°C). Oil (such as heat transfer oil with a temperature of 80 to 120°C), and similarly, the cold water pipe 8 supplies heat transfer oil with a lower temperature than the original heat transfer oil in the water bath 1 (for example, heat transfer oil with a temperature of 0 to 5°C).

In a further implementation manner, the cold water valve 81 and the steam valve 91 are both self-control valves, and both are interlocked with the thermometer 5, so that the water temperature can be automatically adjusted in real time, which has the advantage of saving time and effort.

The continuous reaction device of the present application, its use process is as follows:

In use, through the first water inlet 2, water with a suitable reaction temperature, such as warm water with a temperature of 50 to 60 °C, is continuously introduced into the water bath box 1 to preheat the tubular reaction system 4; The water outlet 3 overflows, and enters the device for heating water again, such as a water heater, for recycling.

After the preheating of the tubular reaction system 4 is completed, the feed pump pumps the reaction liquid (in this application, the reaction substrate of 3,4,5-trifluorobenzeneboronic acid is taken as an example) into the tubular reaction system through the feed port 101. In the reaction system 4, the reaction material liquid enters the reaction pipe 42 from the feeding pipe 41, and a plurality of reaction pipes 42 are arranged in parallel, and the plurality of reaction pipes 42 are connected end to end through the connecting pipe 44. The pump is pumped into the tubular reaction system 4, so the reaction material liquid has a certain pressure. After the reaction material liquid enters the reaction pipe 42, it is blocked by the blade 4204 fixedly connected to the fixed rod 4202 during the advancing process. A turbulent flow will be formed during the reaction time, and the reaction feed liquid will be stirred, and at the same time, a reaction will occur between the substrates in the reaction feed liquid to generate a product, and the product generated by the reaction will enter the discharge pipe 43, and the product will be driven by the subsequent feed liquid pressure. Port 102 is output, thereby completing the entire reaction process.

The water bath box 1 is provided with a thermometer 5 for real-time monitoring of the change of the water temperature in the water bath box 1. A second water inlet 7 is arranged on one side of the water bath box near the bottom. The water distribution pipe 6 is connected, while the cold water pipe 8 and the steam pipe 9 are respectively connected to the second water inlet 7, and the cold water pipe 8 and the steam pipe 9 are respectively provided with a cold water valve 81 and a steam valve 91. During production, the operator can adjust the temperature of the water bath by opening the cold water valve 81 or the steam valve 91 according to the temperature of the water bath in the water bath box 1 monitored by the thermometer 5 . The water inlet 2 inputs warm water into the water bath box 1, keeps the steam valve 91 closed, opens the cold water valve 81, and inputs cold water (the temperature is 0-5 ℃) into the water bath box 1 through the water distribution pipe 6; when the water bath temperature is lower than the preset temperature When the temperature is low, the input of warm water into the water bath box 1 through the first water inlet 2 is suspended, the cold water valve 81 is kept closed, and the steam valve 91 is opened, and steam is input into the water bath box 1 through the water distribution pipe 6 (temperature is 80 ~ 120 ℃).

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that; The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims (8)

1. A continuous reaction device, characterized in that, comprises a water bath (1), a first water inlet (2), a water outlet (3) and a tubular reaction system (4); The tubular reaction system (4) comprises a feed pipe (41), a reaction pipe (42) and a discharge pipe (43), the reaction pipe (42) is arranged in the water bath, and the reaction pipe (42) 42) Connected between the feed pipe (41) and the discharge pipe (43), the feed pipe (41) and the discharge pipe (43) are connected from the water bath box (1) Extend upwards from the top of the water bath (1); The first water inlet (2) is arranged on one side of the water bath box (1) near the bottom, and the water outlet (3) is arranged on the upper part of one side of the water bath box (1), away from the the first water inlet (2); The feeding port (101) of the feeding pipe (41) is close to the first water inlet (2); the discharging port (102) of the feeding pipe (43) is close to the water outlet (3); The reaction tube (42) comprises a reaction tube body (4201), a blade (4204) arranged in the reaction tube body (4201), a fixing rod (4202) fixedly connected to the blade (4204), and, The fixing rod (4202) is fixed on the connecting rib (4203) in the reaction tube body (4201). 2 . The continuous reaction device according to claim 1 , wherein a plurality of the reaction tubes ( 42 ) are arranged in parallel, and the connecting tubes ( 44 ) are connected between the adjacent reaction tubes ( 42 ). 3 . Connected. 3. The continuous reaction device according to claim 1, characterized in that, the continuous reaction device further comprises a thermometer (5), and the thermometer (5) is arranged on the top of the water bath (1), and Close to the water outlet (3) and extend into the water bath box (1). 4. The continuous reaction device according to any one of claims 1 to 3, characterized in that, a second water inlet (7) is provided on one side of the water bath box (1) near the bottom, and the second water inlet (7) is The water inlet (7) is connected with the water distribution pipe (6) arranged in the water bath box (1). 5 . The continuous reaction device according to claim 4 , wherein the second water inlet ( 7 ) is connected to a steam pipe ( 9 ), and a steam valve ( 91 ) is provided on the steam pipe ( 9 ). 6 . . 6. The continuous reaction device according to claim 4, wherein the second water inlet (7) is also connected with a cold water pipe (8), and a cold water valve (81) is provided on the cold water pipe (8). ). 7. The continuous reaction device according to claim 4, wherein the water distribution pipe (6) comprises a water distribution pipe body (601) and a plurality of water distribution holes distributed on the water distribution pipe body (601) (602); One end of the water distribution pipe (6) away from the second water inlet (7) is closed. 8. The continuous reaction device according to any one of claims 1 to 3, wherein a plurality of the blades (4204) are provided, and the blades (4204) are in the shape of three-blade fan blades.

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