Hydrogenation liquid conversion kettle for aminomethylbenzoic acid production

Abstract

The utility model discloses a hydrogenation liquid conversion kettle for aminomethylbenzoic acid production, and relates to the technical field of aminomethylbenzoic acid production. Comprising a conversion kettle main body and an auxiliary rotating shaft, a driving rotating shaft is fixedly connected to the right side of a bearing seat, a driven wheel is fixedly mounted at the position, close to the left side, of the outer surface of the driving rotating shaft, and a driving gear is fixedly mounted at the position, close to the left side, of the outer surface of the driving rotating shaft; stirring blades are arranged on the outer surface of the driving rotating shaft, a discharging pipe is fixedly connected to the position, close to the center, of the bottom of the conversion kettle body, a feeding end is arranged at the top of the conversion kettle body, and a first sliding slope is arranged on the position, close to the left side, of the inner bottom wall of the conversion kettle body; a second slope is arranged on the inner bottom wall of the conversion kettle body close to the right side, auxiliary stirring blades are fixedly connected to the outer surface of the auxiliary rotating shaft, and a driven gear is fixedly connected to the outer surface of the auxiliary rotating shaft close to the left side.

Description

Technical Field

[0001] This utility model relates to the field of aminotranyl acid production technology, specifically to a hydrogenation liquid conversion reactor for aminotranyl acid production. Background Technology

[0002] The hydrogenation liquid conversion reactor is mainly used in the hydrogenation liquid conversion process of tranexamic acid production and is a key piece of equipment for realizing the hydrogenation reaction. In the production process of tranexamic acid, hydrogenation liquid conversion is an important step, converting specific organic compounds into tranexamic acid or its key intermediates through a hydrogenation reaction.

[0003] Chinese utility model patent CN221208086U discloses a hydrogenation liquid conversion reactor for the production of tranexamic acid, relating to the field of tranexamic acid production technology. The reactor includes a reactor body and auxiliary components. A reactor lid is located at the upper end of the reactor body, and a wall scraper is vertically mounted on the middle of the lid via a rotating rod. The auxiliary components, used to promote complete reaction, are located at the lower end of the reactor body and include a rotating tube, arc rods, an internal cavity, and heating wires. The arc rods are connected to the end of the rotating tube. This hydrogenation liquid conversion reactor for tranexamic acid production uses four arc rods arranged in an olive shape at the end of the rotating tube. Driven by the rotating tube, the arc rods agitate the bottom of the reactor body, promoting the reaction of solid materials during production and preventing solid drugs from settling to the bottom, thus avoiding incomplete conversion. The heating wire in the internal cavity heats the arc rods, further promoting the conversion of solids and preventing drug settling. The wall scraper prevents adhesion to the reactor wall during conversion and facilitates subsequent cleaning of the reactor body.

[0004] Existing conversion reactors typically employ a single stirring shaft and blades, resulting in slow mixing speeds and difficulty in achieving uniform material mixing within a short time. Dead zones easily form within the reactor, leading to incomplete mixing of some materials and affecting the overall mixing effect. A single stirring system cannot achieve omnidirectional mixing, easily resulting in localized areas of excessively high or low concentrations. The single flow path of the material within the reactor prevents effective circulation, leading to insufficient mixing uniformity. Due to uneven mixing, inconsistent reaction conditions occur during fermentation, resulting in unstable fermentation effects and inconsistent product quality. Fermentation time is prolonged due to uneven mixing, reducing production efficiency. Therefore, a hydrogenation liquid conversion reactor for tranexamic acid production is needed to solve these problems. Utility Model Content

[0005] This invention provides a hydrogenation liquid conversion reactor for the production of tranexamic acid, in order to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrogenation liquid conversion reactor for the production of tranexamic acid, comprising a reactor body and an auxiliary rotating shaft. A mounting frame is fixedly connected to the bottom of the reactor body. A drive motor is fixedly mounted on the inner top wall of the mounting frame near the left side. A drive wheel is fixedly connected to the output end of the drive motor, and a belt is mounted on the drive wheel. A mounting box is fixedly mounted on the left side of the reactor body. A bearing seat is fixedly mounted on the inner left side wall of the mounting box near the center. A drive rotating shaft is fixedly mounted and connected to the right side of the bearing seat. A driven wheel is fixedly mounted on the outer surface of the drive rotating shaft near the left side. A drive gear is fixedly installed on the outer surface of the active rotating shaft near the left side. A stirring blade is provided on the outer surface of the active rotating shaft. A discharge pipe is fixedly connected to the bottom of the conversion vessel body near the center. A feed end is provided on the top of the conversion vessel body. A one-way valve is provided on the top of the conversion vessel body. A pressure gauge is provided on the top of the conversion vessel body. A first slipway is provided on the inner bottom wall of the conversion vessel body near the left side. A second slipway is provided on the inner bottom wall of the conversion vessel body near the right side. A secondary stirring blade is fixedly connected to the outer surface of the auxiliary rotating shaft. A driven gear is fixedly connected to the outer surface of the auxiliary rotating shaft near the left side.

[0007] Furthermore, there are two auxiliary rotating shafts, both with identical surface structures, and located below the stirring blades near their front and rear ends. Each of the two auxiliary rotating shafts has a second bearing seat on its right side. In use, one of the two auxiliary stirring blades rotates and moves the material to the left, while the other rotates and moves the material to the right. The right side of the second bearing seat on the auxiliary rotating shaft is fixedly connected to the inner right side wall of the conversion vessel body.

[0008] Furthermore, the driving gear and the two driven gears are all located inside the mounting box, and the driving gear meshes with the two driven gears.

[0009] Furthermore, the left sides of the two auxiliary rotating shafts respectively penetrate the left side wall of the converter body near the front and rear ends and extend into the interior of the mounting box. Sealing rings are provided at the connection points of the two auxiliary rotating shafts with the converter body, and the connection points of the two auxiliary rotating shafts with the converter body and the mounting box are respectively connected by ball bearings.

[0010] Furthermore, the interior of the active rotating shaft penetrates the interior left side wall of the conversion vessel body and extends into the interior of the mounting box. A sealing ring is provided at the connection between the active rotating shaft and the conversion vessel body. The connection between the active rotating shaft and the conversion vessel body is provided by a ball bearing. A third bearing seat is provided on the right side of the active rotating shaft, and the right side of the third bearing seat on the active rotating shaft is fixedly connected to the interior right side wall of the conversion vessel body.

[0011] Furthermore, the first landslide slopes towards the rear end at an angle not exceeding 10 degrees, and the second landslide slopes towards the front end at an angle not exceeding 10 degrees.

[0012] Furthermore, a sealing cover is provided on the feed end, a controller is provided on the main body of the conversion reactor, a maintenance door is provided on the mounting box, the bottom of the discharge pipe penetrates through the top of the mounting frame and extends out of the inner top wall of the mounting frame, and a control valve is provided on the discharge pipe.

[0013] Furthermore, through slots are provided on the top of the mounting frame near the left side and on the bottom of the mounting box. One end of the belt passes through the through slots on the mounting frame and the mounting box and is sleeved on the outer surface of the driven wheel. The driving wheel and the driven wheel are connected by a belt.

[0014] Compared with the prior art, this utility model provides a hydrogenation liquid conversion reactor for the production of tranexamic acid, which has the following beneficial effects:

[0015] 1. This hydrogenation liquid conversion reactor for tranexamic acid production is equipped with stirring blades, an auxiliary rotating shaft, a main rotating shaft, a driving gear, a driven gear, secondary stirring blades, a first slipway, a second slipway, and a drive motor. The stirring blades on the main rotating shaft and the secondary stirring blades on the auxiliary rotating shaft work together to form a multi-stage stirring mode. This setup can quickly and initially mix the tranexamic acid raw materials, and the reverse rotation of the auxiliary stirring blades further refines the mixing effect. The first and second slipways, along with the weak vibrations generated by the drive motor, create an efficient circulating flow pattern within the conversion reactor. This circulating flow not only accelerates the mixing speed of the raw materials but also greatly improves the uniformity of the mixture. The stirring blades draw material from the side furthest from the drive motor towards the side closer to the drive motor, while the secondary stirring blades draw material from the side closer to the drive motor towards the side furthest from the drive motor. This bidirectional extraction... The dynamic setup ensures uniform distribution of materials within the conversion vessel, preventing material accumulation or dead zones. The first and second slipways, combined with the vibration effect of the drive motor, make the material flow more smoothly, further improving the uniformity of mixing. The multi-stage stirring system and circulating flow mode can quickly and evenly mix the tranexamic acid raw materials, greatly shortening the mixing time and improving production efficiency. The uniform and fine mixing state helps to improve the effect of subsequent fermentation processes, thereby improving overall production efficiency. The multi-stage stirring system and circulating flow mode can complete efficient mixing in a short time, reducing stirring time and thus reducing energy consumption. The tranexamic acid raw materials can be evenly mixed, resulting in better fermentation effects and improving product quality and consistency. The slope setting and circulating flow mode can reduce the residence time of materials in the conversion vessel, avoiding excessive reaction or decomposition of materials, thereby improving product purity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural diagram of the main body of the conversion reactor and the internal structure of the mounting box of this utility model;

[0018] Figure 3 This is a top view of the interior of the mounting box of this utility model.

[0019] In the diagram: 1. Mounting frame; 2. Feed end; 3. Converter body; 4. Check valve; 5. Mounting box; 6. Pressure gauge; 7. Controller; 8. Auxiliary rotating shaft; 9. Discharge pipe; 10. First slipway; 11. Drive motor; 12. Drive wheel; 13. Driven gear; 14. Belt; 15. Bearing housing; 16. Driven wheel; 17. Drive gear; 18. Driven rotating shaft; 19. Stirring blades; 20. Second slipway; 21. Secondary stirring blades. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3 This utility model discloses a hydrogenation liquid conversion reactor for the production of tranexamic acid, including a reactor body 3 and an auxiliary rotating shaft 8. A mounting frame 1 is fixedly connected to the bottom of the reactor body 3. A drive motor 11 is fixedly installed on the inner top wall of the mounting frame 1 near the left side. A drive wheel 12 is fixedly connected to the output end of the drive motor 11, and a belt 14 is provided on the drive wheel 12. A mounting box 5 is fixedly installed on the left side of the reactor body 3. A bearing seat 15 is fixedly installed on the inner left side wall of the mounting box 5 near the middle. A drive rotating shaft 18 is fixedly installed and connected to the right side of the bearing seat 15. A driven wheel 16 is fixedly installed on the outer surface of the drive rotating shaft 18 near the left side. A drive gear 17 is fixedly installed on the outer surface of the drive rotating shaft 18 near the left side. A stirring blade 19 is provided on the outer surface of the drive rotating shaft 18. A discharge pipe 9 is fixedly connected to the bottom of the conversion vessel body 3 near the center. A feed end 2 is provided on the top of the conversion vessel body 3. A one-way valve 4 is provided on the top of the conversion vessel body 3. A pressure gauge 6 is provided on the top of the conversion vessel body 3. A first slope 10 is provided on the inner bottom wall of the conversion vessel body 3 near the left side. A second slope 20 is provided on the inner bottom wall of the conversion vessel body 3 near the right side. A secondary stirring blade 21 is fixedly connected to the outer surface of the auxiliary rotating shaft 8. A driven gear 13 is fixedly connected to the outer surface of the auxiliary rotating shaft 8 near the left side.

[0022] Specifically, there are two auxiliary rotating shafts 8. The two auxiliary rotating shafts 8 have the same surface structure and are located below the stirring blades 19 near the front and rear ends, respectively. The right end of each of the two auxiliary rotating shafts 8 is provided with a second bearing seat. In use, one of the two auxiliary stirring blades 21 drives the material to the left when rotating, and the other drives the material to the right when rotating. The right side of the second bearing seat on the auxiliary rotating shaft 8 is fixedly connected to the inner right side wall of the conversion vessel body 3.

[0023] Specifically, the driving gear 17 and the two driven gears 13 are all located inside the mounting box 5, and the driving gear 17 meshes with the two driven gears 13.

[0024] Specifically, the left sides of the two auxiliary rotating shafts 8 pass through the left side wall of the converter body 3 near the front and rear ends and extend into the interior of the mounting box 5. The connection points of the two auxiliary rotating shafts 8 with the converter body 3 are equipped with sealing rings. The connection points of the two auxiliary rotating shafts 8 with the converter body 3 and the mounting box 5 are connected by ball bearings.

[0025] Specifically, the interior of the active rotating shaft 18 penetrates the interior left side wall of the conversion vessel body 3 and extends into the interior of the mounting box 5. A sealing ring is provided at the connection between the active rotating shaft 18 and the conversion vessel body 3. The connection between the active rotating shaft 18 and the conversion vessel body 3 is provided by a ball bearing. A third bearing seat is provided on the right side of the active rotating shaft 18, and the right side of the third bearing seat on the active rotating shaft 18 is fixedly connected to the interior right side wall of the conversion vessel body 3.

[0026] Specifically, the first landslide 10 is inclined near the rear end and does not exceed 10 degrees, while the second landslide 20 is inclined near the front end and does not exceed 10 degrees.

[0027] Specifically, a sealing cover is provided on the feed end 2, a controller 7 is provided on the main body 3 of the conversion vessel, a maintenance door is provided on the mounting box 5, the bottom of the discharge pipe 9 penetrates through the top of the mounting frame 1 and extends out of the inner top wall of the mounting frame 1, and a control valve is provided on the discharge pipe 9.

[0028] Specifically, through slots are provided on the top of the mounting bracket 1 near the left side and on the bottom of the mounting box 5. One end of the belt 14 passes through the through slots on the mounting bracket 1 and the mounting box 5 and is sleeved on the outer surface of the driven wheel 16. The driving wheel 12 and the driven wheel 16 are connected by the belt 14.

[0029] In operation, the operator first needs to open the sealing cap on the feed end 2. This sealing cap is well-designed to ensure easy opening during feeding and tight closure during subsequent stirring to prevent material leakage. The precisely proportioned aminotranic acid raw material is then slowly added to the main body 3 of the conversion reactor through the feed end 2. The feeding speed should be moderate to avoid material splashing or accumulation due to excessive speed. After feeding, the operator needs to carefully check whether the feed cap is tightly closed to ensure that no material leakage occurs during subsequent stirring. After confirming that the feed cap is properly sealed, the operator starts the drive motor 11. The drive motor 11 runs rapidly, and its output drives the drive wheel 12 to rotate. The drive wheel 12 is driven by the belt 14, which in turn drives the driven wheel. 16 rotates; the rotation of driven wheel 16 further drives the active rotating shaft 18; as the active rotating shaft 18 rotates, the stirring blades 19 fixed on its outer surface also rotate at high speed, initially mixing the raw materials in the conversion vessel body 3; at the same time, the active gear 17 is also driven to rotate; the active gear 17 drives the two driven gears 13 to rotate through gear meshing; due to the ingenious meshing arrangement of the active gear 17 and the two driven gears 13, the two driven gears 13 exhibit opposite rotation directions when rotating; this opposite rotation characteristic causes the two driven gears 13 to drive the two auxiliary rotating shafts 8 to rotate in different directions respectively; through the rotation of the two auxiliary rotating shafts 8, the stirring blades 19 and the auxiliary stirring blades 21 are driven to rotate respectively. Utilizing the characteristics of the stirring blades 19, the tranexamic acid raw material from the side away from the drive motor 11 is drawn towards the side closer to the drive motor 11. Subsequently, this drawn-out raw material flows smoothly into the left side of the bottom wall of the conversion vessel near the rear end, aided by the drop of the first slipway 10 and the slight vibration generated by the drive motor 11. Simultaneously, the auxiliary stirring blades 21, using their unique spiral characteristics, draw the tranexamic acid raw material from the side closer to the drive motor 11 towards the side away from the drive motor 11. This raw material also flows smoothly into the right side of the bottom wall of the conversion vessel body 3 near the front end, aided by the drop of the second slipway 20 and the vibration effect of the drive motor 11. In this way, a highly efficient circulating flow pattern is formed within the conversion vessel body 3. One end is drawn to the left, then flows to the other end through the slope drop and vibration effect; the other end is drawn to the right, then flows back through the slope drop and vibration effect on the other side. This circulating flow not only accelerates the mixing speed of the raw materials, but also greatly improves the uniformity of the mixture. As the stirring time progresses, the tranexamic acid raw materials gradually become uniform and fine. This uniform and fine mixing state helps to improve the subsequent fermentation effect. After stirring is completed, the operator can turn off the drive motor 11 and wait for a period of time for the tranexamic acid raw materials in the main body 3 of the conversion vessel to ferment and precipitate. If necessary, the drive motor 11 can be turned on again during the fermentation process to further promote the fermentation process. After fermentation is completed, the operator opens the control valve on the discharge pipe 9.Due to the sloping design at the bottom of the main body 3 of the conversion reactor, the fermented tranexamic acid raw material can be discharged smoothly.

[0030] In summary, this hydrogenation liquid conversion reactor for tranexamic acid production, by incorporating stirring blades 19, an auxiliary rotating shaft 8, a main rotating shaft 18, a driving gear 17, a driven gear 13, auxiliary stirring blades 21, a first slipway 10, a second slipway 20, and a drive motor 11, utilizes a multi-stage stirring mode where the stirring blades 19 on the main rotating shaft 18 and the auxiliary stirring blades 21 on the auxiliary rotating shaft 8 work in tandem. This configuration allows for rapid initial mixing of the tranexamic acid raw materials, and the reverse rotation of the auxiliary stirring blades 19 further refines the mixing effect. The first slipway 10 and the second slipway 20, along with the slight vibration generated by the drive motor 11, create an efficient circulating flow pattern within the conversion reactor. This circulating flow not only accelerates the mixing speed of the raw materials but also significantly improves the uniformity of the mixture. The stirring blades 19 draw material away from the drive motor 11 towards the end closer to it, while the auxiliary stirring blades 21 draw material away from the end closer to the drive motor 11. The material is drawn towards the end furthest from the drive motor 11; this bidirectional drawing configuration ensures uniform distribution of the material within the conversion vessel, preventing material accumulation or dead zones; the first and second ramps 10, combined with the vibration effect of the drive motor 11, make the material flow more smoothly, further improving the uniformity of mixing; the multi-stage stirring system and circulating flow mode can quickly and evenly mix the tranexamic acid raw materials, greatly shortening the mixing time and improving production efficiency; the uniform and fine mixing state helps improve the effect of subsequent fermentation processes, thereby improving overall production efficiency; the multi-stage stirring system and circulating flow mode can complete efficient mixing in a shorter time, reducing stirring time and thus reducing energy consumption; the tranexamic acid raw materials can be evenly mixed, resulting in better fermentation effects, thereby improving product quality and consistency; the ramp configuration and circulating flow mode can reduce the residence time of the material in the conversion vessel, avoiding excessive reaction or decomposition of the material, thereby improving product purity.

[0031] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogenation liquid conversion reactor for the production of tranexamic acid, comprising a reactor body (3) and an auxiliary rotating shaft (8), characterized in that: A mounting bracket (1) is fixedly connected to the bottom of the main body (3) of the conversion vessel. A drive motor (11) is fixedly installed on the inner top wall of the mounting bracket (1) near the left side. A drive wheel (12) is fixedly connected to the output end of the drive motor (11). A belt (14) is provided on the drive wheel (12). A mounting box (5) is fixedly installed on the left side of the main body (3). A bearing seat (15) is fixedly installed on the inner left side wall of the mounting box (5) near the middle. A drive rotating shaft (18) is fixedly installed and connected to the right side of the bearing seat (15). A driven wheel (16) is fixedly installed on the outer surface of the drive rotating shaft (18) near the left side. A drive gear is fixedly installed on the outer surface of the drive rotating shaft (18) near the left side. 17) The outer surface of the active rotating shaft (18) is provided with stirring blades (19), the bottom of the conversion vessel body (3) is fixedly connected with a discharge pipe (9) near the center, the top of the conversion vessel body (3) is provided with a feed end (2), the top of the conversion vessel body (3) is provided with a one-way valve (4), the top of the conversion vessel body (3) is provided with a pressure gauge (6), the inner bottom wall of the conversion vessel body (3) is provided with a first slope (10) near the left side, the inner bottom wall of the conversion vessel body (3) is provided with a second slope (20) near the right side, the outer surface of the auxiliary rotating shaft (8) is fixedly connected with auxiliary stirring blades (21), and the outer surface of the auxiliary rotating shaft (8) is fixedly connected with a driven gear (13) near the left side.

2. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: There are two auxiliary rotating shafts (8). The two auxiliary rotating shafts (8) have the same surface structure and are located below the stirring blades (19) near the front and rear ends. The right side of each of the two auxiliary rotating shafts (8) is provided with a second bearing seat. In use, one of the two auxiliary stirring blades (21) drives the material to move to the left when rotating, and the other drives the material to move to the right when rotating. The right side of the second bearing seat on the auxiliary rotating shaft (8) is fixedly connected to the inner right side wall of the conversion kettle body (3).

3. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: The driving gear (17) and the two driven gears (13) are located inside the mounting box (5), and the driving gear (17) meshes with the two driven gears (13).

4. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: The left sides of the two auxiliary rotating shafts (8) pass through the left side wall of the conversion vessel body (3) near the front and rear ends and extend into the interior of the mounting box (5). The connection points of the two auxiliary rotating shafts (8) with the conversion vessel body (3) are provided with sealing rings. The connection points of the two auxiliary rotating shafts (8) with the conversion vessel body (3) and the mounting box (5) are connected by ball bearings.

5. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: The interior of the active rotating shaft (18) penetrates the interior left side wall of the conversion vessel body (3) and extends into the interior of the mounting box (5). A sealing ring is provided at the connection between the active rotating shaft (18) and the conversion vessel body (3). The connection between the active rotating shaft (18) and the conversion vessel body (3) is provided by ball bearings. A third bearing seat is provided on the right side of the active rotating shaft (18), and the right side of the third bearing seat on the active rotating shaft (18) is fixedly connected to the interior right side wall of the conversion vessel body (3).

6. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: The first landslide (10) is inclined near the rear end and does not exceed 10 degrees, and the second landslide (20) is inclined near the front end and does not exceed 10 degrees.

7. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: A sealing cover is provided on the feed end (2), a controller (7) is provided on the main body (3) of the conversion kettle, a maintenance door is provided on the mounting box (5), the bottom of the discharge pipe (9) penetrates the top of the mounting frame (1) and extends out of the inner top wall of the mounting frame (1), and a control valve is provided on the discharge pipe (9).

8. The hydrogenation liquid conversion reactor for the production of tranexamic acid according to claim 1, characterized in that: The top of the mounting bracket (1) near the left side and the bottom of the mounting box (5) are both provided with through slots. One end of the belt (14) passes through the through slots on the mounting bracket (1) and the mounting box (5) and is sleeved on the outer surface of the driven wheel (16). The driving wheel (12) and the driven wheel (16) are connected by the belt (14).

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