Conversion liquid concentration kettle for aminomethylbenzoic acid production

Abstract

The utility model relates to the technical field of aminomethylbenzoic acid production, in particular to a conversion liquid concentration kettle for aminomethylbenzoic acid production, which comprises a tank body, a plurality of support legs are arranged at the lower end of the tank body, the end parts of the support legs are welded and fixed with the surface of the tank body, and a discharge port is arranged at the central position of the lower end of the tank body in a penetrating manner. And the joint position of the discharge port and the tank body is fixed by welding. When aminomethylbenzoic acid needs to be concentrated and processed, firstly, materials are fed into the tank body through the feeding port, then, a power supply of the electric heating pipe is switched on, so that the tank body can be heated, in order to reduce the boiling point of aminomethylbenzoic acid and ensure the safety of the internal pressure of the tank body, monitoring can be carried out through the pressure valve, and a vacuum pump is used for controlling the concentration of aminomethylbenzoic acid. And negative pressure can be formed in the tank body, so that the heating efficiency of aminomethylbenzoic acid is improved, and generated steam can be exhausted through the exhaust pipe.

Description

Technical Field

[0001] This utility model relates to the field of aminotranyl acid production technology, and in particular to a conversion liquid concentration kettle for aminotranyl acid production. Background Technology

[0002] A concentration kettle is a device used to evaporate the solvent in a liquid mixture, thereby concentrating the solution. It is widely used in the chemical, pharmaceutical, food, and beverage industries. The concentration kettle is a highly efficient, energy-saving, and easy-to-operate concentration device, widely applied across various sectors.

[0003] Tranexamic acid, also known as p-aminomethylbenzoic acid, is an organic compound with the chemical formula C9H11NO2. It has wide applications in pharmaceuticals, chemicals, and other fields. For example, Chinese Patent Publication No. CN213347829U discloses a conversion liquid concentration kettle for tranexamic acid production. The kettle includes a concentration kettle divided by a partition into an upper concentration chamber, a middle cooling chamber, and a lower filtration chamber. An end cap is connected to the upper wall of the concentration chamber by fastening screws, and a stirring device is fixed to the upper surface of the end cap. An inner liner is fixed inside the concentration chamber, and an outlet pipe is provided on the lower wall of the filtration chamber. This invention features a concentration chamber, a cooling chamber, and a filtration chamber. The conversion liquid is distilled into a gas by high-temperature heating in the concentration chamber, and then cooled into a liquid in the cooling chamber. This process has a certain concentration function. The liquid then enters the filtration chamber for filtration, effectively removing some impurities and ensuring the purity of the concentrated conversion liquid, preventing contamination. Furthermore, the addition of a stirring device and a cooling device accelerates the processing speed and improves the concentration efficiency.

[0004] Currently, tranexamic acid undergoes a concentration process to remove water and other impurities from the solution, thereby increasing its purity. High-purity tranexamic acid has higher application value in the pharmaceutical and chemical industries. Therefore, it is necessary to design a concentration vessel structure with mixing and accelerated concentration capabilities to meet the production requirements of tranexamic acid. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a conversion liquid concentration kettle for the production of aminotranyl acid.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a conversion liquid concentration kettle for the production of aminotranexamic acid, including a tank body. The lower end of the tank body is provided with several support legs, the ends of which are welded and fixed to the surface of the tank body. A discharge port is provided through the center of the lower end of the tank body. The connection between the discharge port and the tank body is fixed by welding. A butterfly valve is provided on the surface of the discharge port, and the valve core of the butterfly valve is embedded inside the discharge port. A feed port is provided through the upper end of one side of the tank body. The connection between the feed port and the tank body is fixed by welding. A butterfly valve is provided on the feed port, and the valve core of the butterfly valve is embedded inside the feed port.

[0008] The outer part of the can is wrapped with a ceramic sleeve, and the connection between the ceramic sleeve and the can is fixed by screws. The inner part of the ceramic sleeve is wrapped with an electric heating tube, which is located between the ceramic sleeve and the can. The electric heating tube is attached to the surface of the can, and the terminal of the electric heating tube extends outward through the inside of the ceramic sleeve.

[0009] In detail, the upper end of the tank is provided with a cover, the lower end of the cover is fixedly assembled to the end of the tank by screws, a bearing is installed through the center of the cover, the connection between the bearing and the cover is fixed by welding, a stirring shaft is installed through the inside of the bearing, and the surface of the stirring shaft is interference-fitted with the inner ring wall of the bearing.

[0010] In detail, the lower end of the stirring shaft extends into the interior of the tank, and there are several stirring racks on the lower surface of the stirring shaft. One end of the stirring rack is fixed to the surface of the stirring shaft by screws. A motor is installed on the top of the cover. The outer wall of the motor is fixed to the surface of the tank by a bracket. A drive shaft is installed inside the motor. The end of the drive shaft is fixedly connected to the end of the stirring shaft by a coupling.

[0011] In detail, one end of the cover is provided with an extension plate, and the connection between the extension plate and the cover is fixed by screws. A vacuum pump is provided above the extension plate, and the lower end of the vacuum pump is fixedly installed on the surface of the extension plate by a bracket.

[0012] In detail, the vacuum pump has an air inlet flange connected to an air extraction pipe, the other end of which passes through the cover and connects to the tank. The connection between the air extraction pipe and the cover is fixed by welding. A pressure valve is provided on the surface of the air extraction pipe, and the valve core of the pressure valve is embedded inside the air extraction pipe.

[0013] In detail, an exhaust pipe is provided through the end of the cover away from the exhaust pipe. The exhaust pipe is fixed to the cover by welding. An annular cover is fixedly sleeved on the outside of the exhaust pipe. A water collection cavity is provided between the inside of the annular cover and the exhaust pipe. An annular groove is provided at the connection between the annular cover and the exhaust pipe. The inside of the annular groove is filled with a sealing ring. The sealing ring covers the outer wall of the exhaust pipe and is made of water-swellable rubber material.

[0014] In detail, a water outlet is provided through the upper end of one side of the annular cover and communicates with the water collection chamber. The connection between the water outlet and the annular cover is fixed by welding. A butterfly valve three is provided on the water outlet, and the valve core of the butterfly valve three is embedded inside the water outlet.

[0015] In detail, a water inlet is provided through the lower end of one side of the annular cover, which communicates with the water collection chamber. The connection between the water inlet and the annular cover is fixed by welding. A butterfly valve four is provided on the water inlet, and the valve core of the butterfly valve four is embedded inside the water inlet.

[0016] The design scheme proposed in this utility model has the following beneficial effects in application:

[0017] 1. When tranexamic acid needs to be concentrated, the material is first fed into the tank through the feed port. Then, the power supply of the heating element is turned on to heat the tank. In order to lower the boiling point of tranexamic acid and ensure the safety of the internal pressure of the tank, the pressure valve can be used for monitoring. A vacuum pump can be used to create negative pressure in the tank, thereby improving the heating efficiency of tranexamic acid. The generated steam can be discharged through the exhaust pipe. In order to improve the uniformity of mixing and heating of tranexamic acid and auxiliary materials, the power supply of the motor is turned on, so that the motor drives the rotating shaft, thereby driving the stirring shaft to rotate and the stirring frame to stir the solution.

[0018] 2. When it is necessary to condense and recover the steam in the exhaust pipe, cold water can be supplied to the water collection chamber formed between the annular cover and the exhaust pipe through the water inlet. Then, the cold water can be discharged through the water outlet, realizing a cold water cycle, thereby achieving the effect of water cooling and condensation. The part of the exhaust pipe located inside the annular cover has a spiral structure, which can increase the path of steam passage, improve the condensation effect, and make the steam condense into liquid as much as possible for recovery. This process is repeated continuously in the tank, ultimately achieving a stable concentration effect. Attached Figure Description

[0019] Figure 1 This is a front view of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the overall structure of this utility model;

[0021] Figure 3 This is a front structural diagram of the present invention;

[0022] Figure 4 This is a top view of the mixing rack of this utility model;

[0023] Figure 5 This is an enlarged schematic diagram of point A of this utility model.

[0024] In the diagram: 1. Tank body; 11. Support leg; 12. Discharge port; 13. Butterfly valve one; 14. Feed port; 15. Butterfly valve two; 16. Ceramic sleeve; 17. Heating element; 2. Cover; 21. Bearing; 22. Motor; 23. Stirring shaft; 24. Stirring frame; 25. Extension plate; 27. Vacuum pump; 28. Suction pipe; 29. ​​Pressure valve; 3. Exhaust pipe; 31. Annular cover; 32. Annular groove; 33. Sealing ring; 34. Water outlet; 35. Butterfly valve three; 36. Water inlet; 37. Butterfly valve four. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-5 A conversion liquid concentration kettle for the production of aminotranexamic acid includes a tank body 1. Several support legs 11 are provided at the lower end of the tank body 1. The ends of the support legs 11 are welded and fixed to the surface of the tank body 1. A discharge port 12 is provided through the center of the lower end of the tank body 1. The connection between the discharge port 12 and the tank body 1 is fixed by welding. A butterfly valve 13 is provided on the surface of the discharge port 12. The valve core of the butterfly valve 13 is embedded inside the discharge port 12. A feed port 14 is provided through the upper end of one side of the tank body 1. The connection between the feed port 14 and the tank body 1 is fixed by welding. A butterfly valve 2 15 is provided on the feed port 14. The valve core of the butterfly valve 2 15 is embedded inside the feed port 14.

[0027] The tank body 1 is wrapped with a ceramic sleeve 16. The connection between the ceramic sleeve 16 and the tank body 1 is fixed with screws. The ceramic sleeve 16 is wrapped with an electric heating tube 17. The electric heating tube 17 is located between the ceramic sleeve 16 and the tank body 1. The electric heating tube 17 is fitted to the surface of the tank body 1. The wiring terminal of the electric heating tube 17 extends outward through the inside of the ceramic sleeve 16. The ceramic sleeve 16 has a heat insulation protection effect to prevent workers from directly touching the electric heating tube 17 and ensure work safety. The electric heating tube 17 is connected to a digital control switch through wires. The heating status of the electric heating tube 17 can be precisely controlled through digital control operation.

[0028] It should be further explained that a cover 2 is provided at the upper end of the tank body 1. The lower end of the cover 2 is fixedly assembled to the end of the tank body 1 by screws. A bearing 21 is provided through the center of the cover 2. The connection between the bearing 21 and the cover 2 is fixed by welding. A stirring shaft 23 is provided through the inside of the bearing 21. The surface of the stirring shaft 23 is interference-fitted with the inner ring wall of the bearing 21 to ensure the stable rotation of the stirring shaft 23.

[0029] It should be further explained that the lower end of the stirring shaft 23 extends into the interior of the tank 1, and there are several stirring racks 24 on the lower surface of the stirring shaft 23. One end of the stirring rack 24 is fixed to the surface of the stirring shaft 23 by screws. A motor 22 is installed on the top of the cover 2. The outer wall of the motor 22 is fixed to the surface of the tank 1 by a bracket. The motor 22 has a rotating shaft for driving inside. The end of the rotating shaft is fixedly connected to the end of the stirring shaft 23 by a coupling. The stirring racks 24 can play a role in mixing and stirring raw materials and excipients during the concentration of aminobenzoic acid, and can ensure the uniformity of the solution during the heating process.

[0030] It should be further explained that an extension plate 25 is provided at one end of the cover 2. The connection between the extension plate 25 and the cover 2 is fixed by screws. A vacuum pump 27 is provided above the extension plate 25. The lower end of the vacuum pump 27 is fixedly installed on the surface of the extension plate 25 through a bracket. It can create negative pressure inside the tank 1, which can reduce the boiling point of tranexamic acid. It can also perform appropriate pressure balancing according to the monitoring of the pressure valve 29 to avoid excessive internal pressure and potential safety accidents.

[0031] It should be further noted that the vacuum pump 27 has an air inlet flange connected to an air extraction pipe 28. The other end of the air extraction pipe 28 passes through the cover 2 and connects to the tank 1. The connection between the air extraction pipe 28 and the cover 2 is fixed by welding. A pressure valve 29 is provided on the surface of the air extraction pipe 28. The valve core of the pressure valve 29 is embedded inside the air extraction pipe 28. The pressure valve 29 can monitor the pressure inside the tank 1.

[0032] It should be further explained that an exhaust pipe 3 is installed through the end of the cover 2 away from the exhaust pipe 28. The connection between the exhaust pipe 3 and the cover 2 is fixed by welding. An annular cover 31 is fixedly sleeved on the outside of the exhaust pipe 3. A water collection chamber is provided between the inside of the annular cover 31 and the exhaust pipe 3. An annular groove 32 is provided at the connection between the annular cover 31 and the exhaust pipe 3. The inside of the annular groove 32 is filled with a sealing ring 33. The sealing ring 33 covers the outer ring wall of the exhaust pipe 3. The sealing ring 33 is made of water-swellable rubber material. The part of the exhaust pipe 3 located inside the annular cover 31 has a spiral structure, which can increase the path of steam movement, which is equivalent to slowing down the movement rate of steam and improving the condensation effect of cold water on steam.

[0033] It should be further noted that a water outlet 34 communicating with the water collection chamber is provided through the upper end of one side of the annular cover 31. The connection between the water outlet 34 and the annular cover 31 is fixed by welding. A butterfly valve 35 is provided on the water outlet 34. The valve core of the butterfly valve 35 is embedded inside the water outlet 34, which can realize stable operation of cold water discharge.

[0034] It should be further explained that a water inlet 36 communicating with the water collection chamber is provided through the lower end of one side of the annular cover 31. The connection between the water inlet 36 and the annular cover 31 is fixed by welding. A butterfly valve 37 is provided on the water inlet 36. The valve core of the butterfly valve 37 is embedded inside the water inlet 36, which can ensure stable operation of cold water delivery. Through the cooperation of the water inlet 36 and the water outlet 34, the cold water circulation in the water collection chamber formed by the annular cover 31 and the exhaust pipe 3 can be guaranteed to be stable.

[0035] Working method: When it is necessary to concentrate tranexamic acid, the material is first fed into the tank 1 through the feed port 14. Then, the power supply of the electric heating tube 17 is turned on so that it can heat the tank 1. In order to reduce the boiling point of tranexamic acid and ensure the safety of the internal pressure of the tank 1, the pressure valve 29 can be used for monitoring. The vacuum pump 27 can be used to form a negative pressure in the tank 1, thereby improving the heating efficiency of tranexamic acid. The generated steam can be discharged through the exhaust pipe 3.

[0036] In order to improve the uniformity of mixing and heating of aminobenzoic acid and excipients, the power supply of motor 22 is turned on, so that motor 22 drives the rotating shaft, thereby driving the stirring shaft 23 to rotate and the stirring frame 24 to stir the solution.

[0037] When it is necessary to condense and recycle the steam in the exhaust pipe 3, cold water can be supplied to the water collection chamber formed between the annular cover 31 and the exhaust pipe 3 through the water inlet 36. Then, the cold water can be discharged through the water outlet 34 to achieve a cold water cycle, thereby achieving the effect of water cooling and condensation. The part of the exhaust pipe 3 located inside the annular cover 31 has a spiral structure, which can increase the path of steam passage and improve the condensation effect, so that the steam is condensed into liquid as much as possible for recycling and is sent back into the tank 1 to repeat this process continuously, ultimately achieving a stable concentration effect.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A conversion solution concentration kettle for the production of aminomethylbenzoic acid, comprising a tank body (1), characterized in that: The lower end of the tank (1) is provided with several support legs (11). The ends of the support legs (11) are welded and fixed to the surface of the tank (1). A discharge port (12) is provided through the center of the lower end of the tank (1). The connection between the discharge port (12) and the tank (1) is fixed by welding. A butterfly valve (13) is provided on the surface of the discharge port (12). The valve core of the butterfly valve (13) is embedded in the discharge port (12). A feed port (14) is provided through the upper end of one side of the tank (1). The connection between the feed port (14) and the tank (1) is fixed by welding. A butterfly valve (15) is provided on the feed port (14). The valve core of the butterfly valve (15) is embedded in the feed port (14). The outer part of the tank (1) is wrapped with a ceramic sleeve (16). The connection between the ceramic sleeve (16) and the tank (1) is fixed by screws. The inner part of the ceramic sleeve (16) is wrapped with an electric heating tube (17). The electric heating tube (17) is placed between the ceramic sleeve (16) and the tank (1). The electric heating tube (17) is attached to the surface of the tank (1). The wiring end of the electric heating tube (17) extends outward through the inside of the ceramic sleeve (16).

2. The conversion liquid concentration kettle for producing para-aminophenol according to claim 1, characterized in that: The upper end of the tank (1) is provided with a cover (2), and the lower end of the cover (2) is fixedly assembled with the end of the tank (1) by screws. A bearing (21) is provided through the center of the cover (2), and the connection between the bearing (21) and the cover (2) is fixed by welding. A stirring shaft (23) is provided through the inside of the bearing (21), and the surface of the stirring shaft (23) is interference-fitted with the inner ring wall of the bearing (21).

3. The conversion liquid concentration kettle for producing para-aminophenol according to claim 2, characterized in that: The lower end of the stirring shaft (23) extends into the interior of the tank (1), and there are several stirring racks (24) on the lower surface of the stirring shaft (23). One end of the stirring rack (24) is fixed to the surface of the stirring shaft (23) by screws. A motor (22) is installed above the cover (2). The outer wall of the motor (22) is fixed to the surface of the tank (1) by a bracket. A rotating shaft for driving is installed inside the motor (22). The end of the rotating shaft is fixedly connected to the end of the stirring shaft (23) by a coupling.

4. The conversion liquid concentration kettle for producing para-aminophenol according to claim 3, characterized in that: An extension plate (25) is provided at one end of the cover (2). The connection between the extension plate (25) and the cover (2) is fixed by screws. A vacuum pump (27) is provided above the extension plate (25). The lower end of the vacuum pump (27) is fixedly installed on the surface of the extension plate (25) by a bracket.

5. The conversion liquid concentration kettle for tranexamic acid production according to claim 4, characterized in that: The vacuum pump (27) has an air inlet flange connected to an air extraction pipe (28). The other end of the air extraction pipe (28) passes through the cover (2) and is connected to the tank (1). The connection between the air extraction pipe (28) and the cover (2) is fixed by welding. A pressure valve (29) is provided on the surface of the air extraction pipe (28). The valve core of the pressure valve (29) is embedded inside the air extraction pipe (28).

6. The conversion solution concentration kettle for producing para-aminobenzoic acid according to claim 5, characterized in that: The end of the cover (2) away from the exhaust pipe (28) is provided with an exhaust pipe (3). The connection between the exhaust pipe (3) and the cover (2) is fixed by welding. An annular cover (31) is fixedly sleeved on the outside of the exhaust pipe (3). A water collection cavity is provided between the inside of the annular cover (31) and the exhaust pipe (3). An annular groove (32) is provided at the connection between the annular cover (31) and the exhaust pipe (3). A sealing ring (33) is filled inside the annular groove (32). The sealing ring (33) covers the outer ring wall of the exhaust pipe (3). The sealing ring (33) is made of water-swellable rubber material.

7. The conversion solution concentration kettle for producing para-aminobenzoic acid according to claim 6, characterized in that: The upper side of the annular cover (31) is provided with a water outlet (34) that communicates with the water collection chamber. The connection between the water outlet (34) and the annular cover (31) is fixed by welding. A butterfly valve (35) is provided on the water outlet (34), and the valve core of the butterfly valve (35) is embedded inside the water outlet (34).

8. The conversion solution concentration kettle for producing para-aminobenzoic acid according to claim 7, characterized in that: The lower end of one side of the annular cover (31) is provided with a water inlet (36) that communicates with the water collection chamber. The connection between the water inlet (36) and the annular cover (31) is fixed by welding. A butterfly valve (37) is provided on the water inlet (36), and the valve core of the butterfly valve (37) is embedded inside the water inlet (36).

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