CN219518843U - A reation kettle for producing 4-chloroacetoacetic acid ethyl ester - Google Patents
A reation kettle for producing 4-chloroacetoacetic acid ethyl ester Download PDFInfo
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- CN219518843U CN219518843U CN202320558878.1U CN202320558878U CN219518843U CN 219518843 U CN219518843 U CN 219518843U CN 202320558878 U CN202320558878 U CN 202320558878U CN 219518843 U CN219518843 U CN 219518843U
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Abstract
The utility model discloses a reaction kettle for producing 4-chloroacetoacetic acid ethyl ester, which comprises a bottom frame, wherein the left side and the right side of the front end of the bottom frame are connected with stand columns, the outer surfaces of the stand columns on the left side and the right side are vertically sleeved with lifting plates in a sliding manner, and the lifting plates are fixedly connected with the reaction kettle. The reaction kettle can freely stretch out and draw back in the bottom frame, the environment is directly converted into the room temperature environment by the ice salt bath, natural temperature rise is not needed, heat conduction with reaction materials in the reaction kettle is directly realized by salt bath water through the stirring rod, the achievement of reaction conditions is further accelerated, and the production efficiency is improved.
Description
Technical Field
The utility model relates to the field of chemical production, in particular to a reaction kettle for producing 4-chloroacetoacetic acid ethyl ester.
Background
The production of 4-chloroacetoacetic acid ethyl ester comprises the current production process that 58.6g (0.51 mol) of acetoacetic acid ethyl ester is added, an ice salt bath is cooled to 0-5 ℃, 61g (0.452 mol) of chloridized sulfonyl is dropwise added under stirring, the temperature of a reaction solution is kept at 0-5 ℃, 3-4 h is completed, the reaction solution is naturally warmed up after the addition, stirring is carried out at room temperature for 3h and is left overnight, the cooling principle of the ice salt bath is related to the freezing point reduction of the solution, when salt and ice are uniformly mixed together, the ice is slightly melted into water due to the fact that the heat of the environment is absorbed, the salt is dissolved when the salt is dissolved by water, so that a concentrated salt solution is formed on the surface, and the system is in coexistence of the concentrated salt solution and ice because the freezing point of the concentrated salt solution is lower than pure water, the temperature of the system must be reduced to maintain the coexistence state (the coexistence temperature of the concentrated salt solution and ice should be lower than that of pure freezing point of water), more ice is melted into water to dilute the concentrated salt solution, and the temperature is reduced due to a large amount of ice melting. Therefore, the cooling is performed by means of an ice salt bath, the heat conduction is slow, and the production time is also increased by naturally heating to room temperature, so that a reaction kettle for producing 4-chloroacetoacetic acid ethyl ester is needed to solve the above problems.
Disclosure of Invention
The utility model aims to provide a reaction kettle for producing 4-chloroacetoacetic acid ethyl ester, which solves the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a reation kettle for producing 4-chloro acetoacetate, includes the underframe, the front end left and right sides of underframe is connected with the stand, the vertical slip cap of stand surface of left and right sides is equipped with the lifter plate, lifter plate fixedly connected with reation kettle, the lifter plate passes through the vertical rotation of screw thread and wears to be equipped with vertical screw rod, first motor is installed to the terminal surface before the underframe, and the below is connected with the fixed plate between the stand of left and right sides, vertical screw rod lower extreme and fixed plate rotate to be connected, first motor output and vertical screw rod lower extreme fixed connection, be provided with the puddler in the reation kettle, puddler upper end fixedly connected with driven pulley, install the second motor on the lifter plate, second motor output fixedly connected with driving pulley, be connected with driving belt between driving pulley and the driven pulley, lifter plate fixedly connected with apron, the guide arm is worn to the corner of apron is vertical to slide all around, guide arm lower extreme and underframe up end fixed connection, be provided with ice bath salt water in the underframe.
Further, a rod sleeve is fixedly arranged at the upper end of the reaction kettle, a salt bath water outlet pipe and a salt bath water inlet pipe are respectively connected at the left end and the right end of the rod sleeve, the stirring rod is an annular heat-conducting sleeve, a vertical sleeve is connected at the upper end of the annular heat-conducting sleeve, a first rotating plate is fixedly connected at the upper end of the vertical sleeve and is rotatably arranged in the rod sleeve, a second rotating plate and a third rotating plate are sequentially arranged above the first rotating plate, a transmission rod is connected between the upper end of the third rotating plate and a driven pulley, the second rotating plate and the third rotating plate are rotatably installed in the rod sleeve, a plurality of annular first connecting rods which are uniformly distributed are arranged between the first rotating plate and the second rotating plate, a plurality of annular second connecting rods which are uniformly distributed are arranged between the second rotating plate and the third rotating plate, an annular pipe is arranged in the annular heat-conducting sleeve, one end of the annular pipe is arranged between the first rotating plate and the second rotating plate, the other end of the annular pipe is arranged between the second rotating plate and the third rotating plate, and a liquid pump is arranged on the upper end face of the cover plate.
Further, a plurality of annular heat conducting fins are sleeved on the outer surface of the reaction kettle.
Further, an annular sealing gasket is arranged on the bottom end surface of the cover plate.
Compared with the prior art, the utility model has the beneficial effects that:
1. the reaction kettle is in sealed ice salt water, then, the material feeding reaction is carried out, the sealing performance of the reaction kettle in the bottom frame is good, the heat conduction is accelerated, after the reaction is finished, the first motor is turned on, the lifting plate is pushed to rise, the reaction kettle is pushed out of the bottom frame and is stirred at room temperature, in the reaction process, the second motor is turned on, and the stirring rod is driven to rotate through the transmission belt, so that the reaction is accelerated;
2. the salt bath water directly realizes heat conduction with the reaction materials in the reaction kettle through the stirring rod, so that the achievement of reaction conditions is further accelerated, and the production efficiency is improved;
3. the outer surface of the reaction kettle is sleeved with a plurality of annular heat conducting fins, so that heat exchange between the reaction materials and salt bath water is accelerated, the achievement of reaction conditions is further accelerated, and the production efficiency is improved;
4. the annular sealing gasket is arranged on the bottom end face of the cover plate, when the cover plate is abutted to the upper surface of the bottom frame, the annular sealing gasket can improve the tightness, reduce the heat dissipation, improve the temperature holding time of the ice salt bath water and avoid the temperature in the reaction process from being influenced.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic view of a rear view perspective structure of the present utility model;
FIG. 3 is a schematic view of the mounting structure of the stirring rod of the present utility model;
FIG. 4 is a schematic view of the front view of the stirring rod of the present utility model;
fig. 5 is an enlarged schematic view of the structure of the present utility model at a.
In the figure: 1. a bottom frame; 2. a guide rod; 3. annular heat conducting fin; 4. a liquid pump; 5. a cover plate; 6. a reaction kettle; 7. a drive belt; 8. a driving pulley; 9. a second motor; 10. a lifting plate; 11. a column; 12. a first motor; 13. a fixing plate; 14. a vertical screw; 15. a vertical sleeve; 16. a stirring rod; 17. a salt bath water outlet pipe; 18. a rod sleeve; 19. a driven pulley; 20. a salt bath water inlet pipe; 21. an annular tube; 22. a first rotating plate; 23. a first connecting rod; 24. a transmission rod; 25. a third rotating plate; 26. a second connecting rod; 27. and a second rotating plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: referring to fig. 1-5, a reaction kettle for producing ethyl 4-chloroacetoacetate comprises a bottom frame 1, the left and right sides of the front end of the bottom frame 1 are connected with a stand column 11, the vertical sliding sleeves of the outer surfaces of the stand columns 11 on the left and right sides are provided with lifting plates 10, the lifting plates 10 are fixedly connected with a reaction kettle 6, the lifting plates 10 vertically rotate through threads to penetrate through vertical screws 14, the front end surface of the bottom frame 1 is provided with a first motor 12, a fixed plate 13 is connected below the stand columns 11 on the left and right sides, the lower end of the vertical screws 14 is rotationally connected with the fixed plate 13, the output end of the first motor 12 is fixedly connected with the lower end of the vertical screws 14, stirring rods 16 are arranged in the reaction kettle 6, the upper ends of the stirring rods 16 are fixedly connected with driven pulleys 19, the lifting plates 10 are provided with second motors 9, the output ends of the second motors 9 are fixedly connected with driving pulleys 8, driving belts 7 are connected between the driving pulleys 8 and the driven pulleys 19, the lifting plates 10 are fixedly connected with cover plates 5, the corners 2 of the vertical cover plates 5 are fixedly connected with the bottom frame 1, and the lower ends of the bottom frame 1 are fixedly connected with the bottom frame 1.
The utility model is used for producing 4-chloroacetoacetic acid ethyl ester, 58.6g (0.51 mol) of acetoacetic acid ethyl ester is added in the current production process, the ice salt bath is cooled to 0-5 ℃, 61g (0.452 mol) of chloridized sulfonyl is added dropwise under stirring, the temperature of the reaction solution is kept at 0-5 ℃, the reaction solution is added for 3-4 hours, the temperature is naturally raised after the addition, the reaction is stirred at room temperature for 3 hours, and the reaction solution is left overnight;
the existing cooling principle of the ice salt bath is related to the freezing point reduction of the solution, when salt and ice are uniformly mixed together, the ice is slightly melted into water due to absorbing environment heat, the salt is dissolved in water, so that surface water forms concentrated salt solution, the freezing point of the concentrated salt solution is lower than that of pure water, and the concentrated salt solution and the ice coexist in the system at the moment, so that the temperature of the system must be reduced to maintain the coexistence state (the coexistence temperature of the concentrated salt solution and the ice is lower than that of the pure water), more ice is melted into water to dilute the concentrated salt solution, and the temperature of the system is reduced due to a large amount of heat absorption in the melting process;
therefore, the temperature is reduced by means of ice salt bath at present, the heat conduction is slower, and the production time is also improved by naturally heating to room temperature, therefore, the utility model solves the problems, in particular, in the production process, the first motor 12 is opened, the first motor 12 drives the vertical screw 14 to rotate, the lifting plate 10 and the reaction kettle 6 connected with the lifting plate are pushed to descend, the reaction kettle 6 is placed in the bottom frame 1, ice salt water is filled in the bottom frame 1, the cover plate 5 covers the upper end of the bottom frame 1, the reaction kettle is in sealed ice salt water, then, the feeding reaction is carried out, the tightness of the reaction kettle 6 in the bottom frame 1 is good, the heat conduction is accelerated, after the reaction is finished, the first motor 12 is opened and is reversed, the lifting plate 10 is pushed to ascend, the reaction kettle 6 is pushed out of the bottom frame 1, then stirring is carried out in room temperature, in the reaction process, the second motor 9 is opened, the stirring rod 16 is driven to rotate by the transmission belt 7, and the reaction is accelerated.
The upper end of the reaction kettle 6 in the embodiment is fixedly provided with a rod sleeve 18, the left end and the right end of the rod sleeve 18 are respectively connected with a salt bath water outlet pipe 17 and a salt bath water inlet pipe 20, the stirring rod 16 is an annular heat-conducting sleeve, the upper end of the annular heat-conducting sleeve is connected with a vertical sleeve 15, the upper end of the vertical sleeve 15 is fixedly connected with a first rotating plate 22, the first rotating plate 22 is arranged in the rod sleeve 18 in a rotating way, a second rotating plate 27 and a third rotating plate 25 are sequentially arranged above the first rotating plate 22, a transmission rod 24 is connected between the upper end of the third rotating plate 25 and a driven pulley 19, the second rotating plate 27 and the third rotating plate 25 are rotatably installed in the rod sleeve 18, a plurality of annular first connecting rods 23 which are uniformly distributed are arranged between the first rotating plate 22 and the second rotating plate 27, a plurality of annular second connecting rods 26 which are uniformly distributed are arranged between the second rotating plate 27 and the third rotating plate 25, an annular pipe 21 is arranged in the annular heat-conducting sleeve, one end of the annular pipe 21 is arranged between the first rotating plate 22 and the second rotating plate 27, the other end of the annular pipe 21 is arranged between the second rotating plate 27 and the third rotating plate 25, and a liquid pump 4 is installed on the upper end face of the cover plate 5.
When the liquid pump 4 is installed on the cover plate 5 and the reaction kettle 6 reacts in the ice brine in the bottom frame 1, the liquid pump 4 is started, the liquid pump 4 pumps the ice brine out and pumps the ice brine between the second rotating plate 27 and the third rotating plate 25 in the rod sleeve 18 from the salt bath water inlet pipe 20, and because one end of the annular pipe 21 is arranged between the second rotating plate 27 and the third rotating plate 25, the salt bath water enters between the first rotating plate 22 and the second rotating plate 27 from the annular pipe 21 and returns to the bottom frame 1 from the salt bath water outlet pipe 17 again, so that the circulation of the salt bath water in the stirring rod 16 is realized, the heat conduction of the salt bath water with reaction materials in the reaction kettle 6 is directly realized through the stirring rod 16, the achievement of reaction conditions is further accelerated, and the production efficiency is improved.
The outer surface of the reaction kettle 6 in the embodiment is sleeved with a plurality of annular heat conducting fins 3, so that heat exchange between the reaction materials and salt bath water is accelerated, the achievement of reaction conditions is further accelerated, and the production efficiency is improved.
The apron 5 bottom surface in this embodiment is provided with annular sealing washer, and when the butt of apron 5 and underframe 1 upper surface, annular sealing washer can improve the leakproofness, reduces the heat and gives off, improves the temperature hold time of ice salt bath water, avoids the temperature in the reaction process to receive the influence.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (4)
1. A reation kettle for producing 4-chloro acetoacetate, includes underframe (1), its characterized in that: the left side and the right side of the front end of the bottom frame (1) are connected with upright posts (11), the vertical sliding sleeves of the outer surfaces of the upright posts (11) on the left side and the right side are provided with lifting plates (10), the lifting plates (10) are fixedly connected with a reaction kettle (6), the lifting plates (10) vertically rotate through threads to penetrate through vertical screw rods (14), a first motor (12) is mounted on the front end face of the bottom frame (1), a fixed plate (13) is connected between the upright posts (11) on the left side and the right side, the lower ends of the vertical screw rods (14) are rotationally connected with the fixed plate (13), the output ends of the first motor (12) are fixedly connected with the lower ends of the vertical screw rods (14), stirring rods (16) are arranged in the reaction kettle (6), driven belt pulleys (19) are fixedly connected to the upper ends of the stirring rods (16), a second motor (9) are mounted on the lifting plates (10), a driving belt (7) is connected between the driving belt pulleys (8) and the driven belt pulleys (19), the lifting belt (10) is fixedly connected with the lower end faces of the lifting belt pulleys (5), and the lower end faces of the lifting belt pulleys (5) are fixedly connected with the upper end faces of the lifting plates (2) in a sliding mode, an ice salt bath water is arranged in the bottom frame (1).
2. A reaction kettle for producing ethyl 4-chloroacetoacetate according to claim 1, characterized in that: the upper end of the reaction kettle (6) is fixedly provided with a rod sleeve (18), the left end and the right end of the rod sleeve (18) are respectively connected with a salt bath water outlet pipe (17) and a salt bath water inlet pipe (20), the stirring rod (16) is an annular heat conduction sleeve, the upper end of the annular heat conduction sleeve is connected with a vertical sleeve (15), the upper end of the vertical sleeve (15) is fixedly connected with a first rotating plate (22), the first rotating plate (22) is rotationally arranged in the rod sleeve (18), a second rotating plate (27) and a third rotating plate (25) are sequentially arranged above the first rotating plate (22), a transmission rod (24) is connected between the upper end of the third rotating plate (25) and a driven pulley (19), the second rotating plate (27) and the third rotating plate (25) are rotationally arranged in the rod sleeve (18), a plurality of first connecting rods (23) which are evenly distributed in an annular mode are arranged between the first rotating plate (22) and the second rotating plate (27), a plurality of annular rotating plates (27) are evenly distributed between the second rotating plate (21) and the second rotating plate (27), the annular rotating plates (27) are evenly arranged between the annular rotating plates (21) and the other ends of the connecting rods (21) which are evenly distributed between the second rotating plates (21), the upper end face of the cover plate (5) is provided with a liquid pump (4).
3. A reaction kettle for producing ethyl 4-chloroacetoacetate according to claim 2, characterized in that: the outer surface of the reaction kettle (6) is sleeved with a plurality of annular heat conducting fins (3).
4. A reaction kettle for producing ethyl 4-chloroacetoacetate according to claim 3, characterized in that: an annular sealing gasket is arranged on the bottom end surface of the cover plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320558878.1U CN219518843U (en) | 2023-03-21 | 2023-03-21 | A reation kettle for producing 4-chloroacetoacetic acid ethyl ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320558878.1U CN219518843U (en) | 2023-03-21 | 2023-03-21 | A reation kettle for producing 4-chloroacetoacetic acid ethyl ester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219518843U true CN219518843U (en) | 2023-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320558878.1U Active CN219518843U (en) | 2023-03-21 | 2023-03-21 | A reation kettle for producing 4-chloroacetoacetic acid ethyl ester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219518843U (en) |
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2023
- 2023-03-21 CN CN202320558878.1U patent/CN219518843U/en active Active
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