ACR plasticizer production reaction kettle
By installing a stirring device with heating function and a negative pressure pump in the reactor for ACR plasticizer production, the problem of low local temperature inside the reactor was solved, and uniform heating of the liquid inside the reactor and full utilization of thermal energy were achieved, thereby improving reaction efficiency and spray drying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG DONGLIN NEW MATERIALS CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing ACR plasticizer production process, the local temperature in the pre-emulsification tank and emulsion polymerization tank is relatively low, which affects the efficiency of emulsification and polymerization reactions.
A stirring device with heating function is installed in the pre-emulsification tank and the emulsion polymerization tank. The liquid in the tank is heated as a whole by heating steam inlet pipe and pressurizing pump. When the emulsion polymerization is completed, a negative pressure pump is used to remove part of the solvent to improve the thermal energy utilization efficiency.
This method achieves uniform heating of the liquid inside the reactor, avoids the problem of localized low temperatures, improves the efficiency of emulsification and polymerization reactions, and enhances the efficiency of subsequent spray drying.
Smart Images
Figure CN224585917U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ACR plasticizer production, specifically a reaction vessel for ACR plasticizer production. Background Technology
[0002] ACR plasticizer is a common chemical additive. Current production processes mostly involve emulsifying the monomer, followed by emulsion polymerization and spray drying. Therefore, the current production process of ACR plasticizer requires the use of pre-emulsification kettles and emulsion polymerization kettles for emulsification and polymerization operations. However, the heating operations of the pre-emulsification kettle and emulsion polymerization kettle are generally carried out using heating elements such as heating sleeves and electric heating plates located inside. Although there are stirring devices to accelerate heat transfer, the large volume of the pre-emulsification kettle and emulsion polymerization kettle can easily lead to lower temperatures in the central part, thus affecting the efficiency of the emulsification and polymerization reaction. Utility Model Content
[0003] This invention provides a reaction vessel for the production of ACR plasticizer, which addresses the deficiencies in the prior art.
[0004] This utility model is achieved through the following technical solution:
[0005] A reactor for producing ACR plasticizer includes a pre-emulsification reactor and an emulsion polymerization reactor. Both the pre-emulsification reactor and the emulsion polymerization reactor are equipped with stirring devices with heating functions. The top of the pre-emulsification reactor is connected to a monomer inlet pipe and a solvent inlet pipe. The monomer inlet pipe is also connected to an emulsifier inlet pipe. The bottom of the pre-emulsification reactor is connected to the top of the emulsion polymerization reactor via a pipeline. A feed valve and a feed pump are installed on the connecting pipeline between the pre-emulsification reactor and the emulsion polymerization reactor. The top of the emulsion polymerization reactor is connected to an initiator addition pipe. The top of the emulsion polymerization reactor is connected to a negative pressure pipe, on which a negative pressure pump is installed. The bottom of the emulsion polymerization reactor is connected to a discharge pipe, on which a discharge valve and a discharge pump are installed.
[0006] As described above, in a reactor for producing ACR plasticizer, the stirring device includes a motor. The motor is located at the top of the pre-emulsification reactor or the emulsion polymerization reactor. The output shaft of the motor is fixedly connected to the top of a vertically arranged rotating rod. The rotating rod passes through the center of the top of the pre-emulsification reactor or the emulsion polymerization reactor. The bottom of the rotating rod is fixedly connected to the inner ring of a first bearing. The outer ring of the first bearing is fixedly connected to the center of the top of the emulsion polymerization reactor. An array of stirring blades is arranged from top to bottom on the rotating rod. The rotating rod is hollow inside. The bottom of the rotating rod passes through the center of the top of a fixed shell. The bottom of the rotating rod is connected to the inner ring of a second bearing. The second bearing is fixedly connected to the outer ring of the fixed shell at the center of the top. The lower part of the fixed shell is connected to the heating steam inlet pipe. The heating steam inlet pipe passes through the side wall of the pre-emulsification tank or emulsion polymerization tank and is fixedly connected to it. A high-temperature pressure pump is installed on the pipeline outside the pre-emulsification tank or emulsion polymerization tank. A heating steam outlet pipe is installed inside the rotating rod. The heating steam outlet pipe passes through the fixed shell and the center of the bottom of the pre-emulsification tank or emulsion polymerization tank and is fixedly connected to it. The stirring blade is hollow inside and the interior of the stirring blade is connected to the rotating rod. A temperature sensor is installed inside the pre-emulsification tank or emulsion polymerization tank.
[0007] In the above-described reactor for producing ACR plasticizer, a first check valve is provided on the emulsifier inlet pipe.
[0008] In the above-described reactor for producing ACR plasticizer, a second one-way valve is provided on the initiator inlet pipe.
[0009] The advantages of this invention are: by setting a stirring device with heating function, this invention can heat the liquid in the pre-emulsification kettle and the emulsion polymerization kettle during the stirring process, thereby ensuring that the liquid is heated as a whole and avoiding local low temperature; at the same time, when the emulsion polymerization is about to be completed, the invention can turn on the negative pressure pump to carry out some of the solvent, thereby making full use of the heat energy and improving the efficiency of subsequent spray drying. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Reference numerals: 1. Pre-emulsification kettle; 2. Emulsion polymerization kettle; 3. Monomer inlet pipe; 4. Solvent inlet pipe; 5. Emulsifier inlet pipe; 6. Feed valve; 7. Feed pump; 8. Initiator addition pipe; 9. Negative pressure pipe; 10. Negative pressure pump; 11. Discharge pipe; 12. Discharge valve; 13. Discharge pump; 14. Motor; 15. Rotary rod; 16. First bearing; 17. Stirring blade; 18. Fixed shell; 19. Second bearing; 20. Heating steam inlet pipe; 21. Pressurization pump; 22. Heating steam outlet pipe; 23. Temperature sensor; 24. First check valve; 25. Second check valve. Detailed Implementation
[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0014] A reaction vessel for producing ACR plasticizer includes a pre-emulsification vessel 1 and an emulsion polymerization vessel 2. Both the pre-emulsification vessel 1 and the emulsion polymerization vessel 2 are equipped with stirring devices with heating functions. The top of the pre-emulsification vessel 1 is connected to a monomer inlet pipe 3 and a solvent inlet pipe 4. The monomer inlet pipe 3 is connected to an emulsifier inlet pipe 5. The bottom of the pre-emulsification vessel 1 is connected to the top of the emulsion polymerization vessel 2 via a pipeline. A feed valve 6 and a feed pump 7 are installed on the connecting pipeline between the pre-emulsification vessel 1 and the emulsion polymerization vessel 2. The top of the emulsion polymerization vessel 2 is connected to an initiator addition pipe 8. The top of the emulsion polymerization vessel 2 is connected to a negative pressure pipe 9, on which a negative pressure pump 10 is installed. The bottom of the emulsion polymerization vessel 2 is connected to a discharge pipe 11, on which a discharge valve 12 and a discharge pump 13 are installed. The advantages of this utility model are: by setting a stirring device with heating function, this utility model can heat the liquid in the pre-emulsification tank 1 and the emulsion polymerization tank 2 during the stirring process, thereby ensuring that the liquid is heated as a whole and avoiding local low temperature; at the same time, when the emulsion polymerization is about to be completed, the negative pressure pump 10 is turned on to carry out some of the solvent, thereby making full use of the heat energy and improving the efficiency of subsequent spray drying.
[0015] Specifically, the stirring device described in this embodiment includes a motor 14, which is located at the top of the pre-emulsification tank 1 or the emulsion polymerization tank 2. The output shaft of the motor 14 is fixedly connected to the top of a vertically arranged rotating rod 15. The rotating rod 15 passes through the center of the top of the pre-emulsification tank 1 or the emulsion polymerization tank 2. The bottom of the rotating rod 15 is fixedly connected to the inner ring of a first bearing 16. The outer ring of the first bearing 16 is fixedly connected to the center of the top of the emulsion polymerization tank 2. An array of stirring blades 17 is arranged from top to bottom on the rotating rod 15. The rotating rod 15 is hollow inside. The bottom of the rotating rod 15 passes through the center of the top of a fixed shell 18. The bottom of the rotating rod 15 is fixedly connected to the inner ring of a second bearing 19. The outer ring of the second bearing 19 is located at the center of the top of the fixed shell 18. The lower part of the fixed shell 18 is connected to the heating steam inlet pipe 20. The heating steam inlet pipe 20 passes through the side wall of the pre-emulsification tank 1 or the emulsion polymerization tank 2 and is fixedly connected to it. A high-temperature resistant pressure pump 21 is installed on the pipeline outside the pre-emulsification tank 1 or the emulsion polymerization tank 20. A heating steam outlet pipe 22 is installed inside the rotating rod 15. The heating steam outlet pipe 22 passes through the fixed shell 18 and the center of the bottom of the pre-emulsification tank 1 or the emulsion polymerization tank 2 and is fixedly connected to it. The stirring blade 17 is hollow inside and is connected to the rotating rod 15. A temperature sensor 23 is installed inside the pre-emulsification tank 1 or the emulsion polymerization tank 2. In this invention, heating steam is introduced into the fixed shell 18 through the heating steam inlet pipe 20 and the pressurizing pump 21. The steam then moves upward along the gap between the heating steam outlet pipe 22 and the fixed shell 18 and the rotating rod 15, and enters the internal cavity of the stirring blade 17 to complete heat exchange. After heat exchange, the steam exits through the top of the heating steam outlet pipe 22 and then exits. While the motor 14 drives the rotating rod 15 and the stirring blade 17 to rotate, the heating steam also continuously circulates, thus enabling convenient heating during the stirring process. At the same time, because the stirring blade 17 rotates during the stirring process, heating can be achieved during rotation, thereby improving the overall uniform heating, avoiding temperature differences, and thus improving the reaction efficiency.
[0016] Specifically, in this embodiment, a first one-way valve 24 is provided on the emulsifier inlet pipe 5. In this invention, the first one-way valve 24 ensures a stable addition of emulsifier to the emulsifier inlet pipe 5, ensuring its normal operation.
[0017] Furthermore, a second one-way valve 25 is provided on the initiator addition pipe 8 described in this embodiment. In this invention, the second one-way valve 25 can ensure the addition of the initiator while preventing the air from being extracted from the initiator addition pipe 8 during solvent removal by the negative pressure pump 10, thus ensuring the normal operation of the negative pressure solvent removal.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A reaction vessel for producing ACR plasticizer, characterized in that: The system includes a pre-emulsification tank (1) and an emulsion polymerization tank (2). The pre-emulsification tank (1) and the emulsion polymerization tank (2) are equipped with a stirring device with heating function. The top of the pre-emulsification tank (1) is connected to the monomer inlet pipe (3) and the solvent inlet pipe (4). The monomer inlet pipe (3) is connected to the emulsifier inlet pipe (5). The bottom of the pre-emulsification tank (1) is connected to the top of the emulsion polymerization tank (2) through a pipeline. The pipeline connecting the pre-emulsification tank (1) and the emulsion polymerization tank (2) is equipped with a feed valve (6) and a feed pump (7). The top of the emulsion polymerization tank (2) is connected to the initiator addition pipe (8). The top of the emulsion polymerization tank (2) is connected to the negative pressure pipe (9). The negative pressure pipe (9) is equipped with a negative pressure pump (10). The bottom of the emulsion polymerization tank (2) is connected to the discharge pipe (11). The discharge pipe (11) is equipped with a discharge valve (12) and a discharge pump (13).
2. The reaction vessel for producing ACR plasticizer according to claim 1, characterized in that: The stirring device includes a motor (14), which is located at the top of the pre-emulsification tank (1) or the emulsion polymerization tank (2). The output shaft of the motor (14) is fixedly connected to the top of a vertically arranged rotating rod (15). The rotating rod (15) passes through the center of the top of the pre-emulsification tank (1) or the emulsion polymerization tank (2). The bottom of the rotating rod (15) is fixedly connected to the inner ring of a first bearing (16). The outer ring of the first bearing (16) is fixedly connected to the center of the top of the emulsion polymerization tank (2). The rotating rod (15) has an array of stirring blades (17) arranged from top to bottom. The rotating rod (15) is hollow inside. The bottom of the rotating rod (15) passes through the center of the top of a fixed shell (18). The bottom of the rotating rod (15) is fixedly connected to the inner ring of a second bearing (19). 9) The outer ring is located at the center of the top of the fixed shell (18). The lower part of the fixed shell (18) is connected to the heating steam inlet pipe (20). The heating steam inlet pipe (20) passes through the side wall of the pre-emulsification kettle (1) or the emulsion polymerization kettle (2) and is fixedly connected to it. The heating steam inlet pipe (20) is located on the pipeline outside the pre-emulsification kettle (1) or the emulsion polymerization kettle (2) and is equipped with a high-temperature resistant pressure pump (21). The heating steam outlet pipe (22) is installed inside the rotating rod (15). The heating steam outlet pipe (22) passes through the fixed shell (18) and the center of the bottom of the pre-emulsification kettle (1) or the emulsion polymerization kettle (2) and is fixedly connected to it. The stirring blade (17) is hollow inside. The interior of the stirring blade (17) is connected to the rotating rod (15). The temperature sensor (23) is installed inside the pre-emulsification kettle (1) or the emulsion polymerization kettle (2).
3. The reaction vessel for producing ACR plasticizer according to claim 1, characterized in that: A first check valve (24) is provided on the emulsifier inlet pipe (5).
4. The reaction vessel for producing ACR plasticizer according to claim 1, characterized in that: A second check valve (25) is provided on the initiator addition pipe (8).