Anti-self-polymerization acrylic amino ester synthesis kettle

Abstract

The utility model relates to acrylic amino ester synthetic kettle field, specifically prevent the self -polymerization's acrylic amino ester synthetic kettle, including synthetic kettle main part, the bottom fixed setting of synthetic kettle main part has the support, the upper portion detachable of synthetic kettle main part is provided with the kettle cover, is set up kettle cavity on the casing of synthetic kettle main part, is provided with kettle body heating mechanism on the kettle cavity, the outside of synthetic kettle main part is fixedly set up and has rock wool heat preservation layer, the kettle cover is fixedly set up and has the feed pipe and inert gas interface, is fixedly set up and has gas flow controller on the inert gas interface, is provided with the polymerization inhibitor distribution mechanism on synthetic kettle main part, the top of kettle cover is provided with motor, and the output of motor passes through kettle cover and is provided with mixing mechanism, is provided with the discharge valve pipe under synthetic kettle main part, and the liquid pipe is communicated and is provided with the kettle cavity, can avoid the self -polymerization compound when acrylic amino ester raw material synthesis reaction, forms.

Description

Technical Field

[0001] This utility model relates to the field of acrylate amino ester synthesis reactors, specifically an acrylate amino ester synthesis reactor that prevents self-polymerization. Background Technology

[0002] Amino acrylates are key functional monomers in coatings, adhesives, and polymer materials. Their subcategories—DA (dodecylaminoethyl acrylate), DM (dimethylaminomethyl acrylate), and DEAM (diethylaminoethyl acrylate)—exhibit differentiated functional properties due to the amino groups and acrylate double bonds in their molecular structures. DA, with its hydrophobic long-chain alkyl groups, is widely used in the preparation of water-resistant coatings and textile auxiliaries. DM, due to the high reactivity of dimethylamino groups, is a core monomer for cationic adhesives and photosensitive resins. DEAM, relying on the moderate alkalinity and solubility of diethylamino groups, is commonly used in polymer surface modifiers and pharmaceutical intermediates. Although the three monomers have different applications, their synthesis processes all require acrylic acid (AA) as a raw material, undergoing esterification reactions with amino compounds such as dodecylamine, dimethylamine, and diethylamine, respectively.

[0003] In the synthesis of amino acrylates, the raw materials for the synthesis of amino acrylates are added to a reaction vessel, and the synthesis temperature is controlled to allow the raw materials for the synthesis of amino acrylates to undergo a chemical reaction in the reaction vessel.

[0004] Among them, acrylic monomers have extremely strong self-polymerization properties. When the local concentration of raw materials in the synthesis of amino acrylates is too high, polyacrylic acid polymers are easily formed, which affects the preparation of amino acrylates. Therefore, in order to address the above problem, an anti-self-polymerization amino acrylate synthesis reactor is proposed. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes an anti-self-polymerization acrylate synthesis reactor.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a self-polymerizing acrylate amino ester synthesis kettle, including a synthesis kettle body; a support is fixedly installed at the bottom of the synthesis kettle body, a kettle cover is detachably installed on the top of the synthesis kettle body, a kettle cavity is opened on the shell of the synthesis kettle body, a kettle body heating mechanism is installed on the kettle cavity, a rock wool insulation layer is fixedly installed on the outer side of the synthesis kettle body, a feed pipe and an inert gas interface are fixedly installed on the kettle cover, a gas flow controller is fixedly installed on the inert gas interface, a polymerization inhibitor placement mechanism is installed on the synthesis kettle body, a motor is installed above the kettle cover, a mixing mechanism is installed through the kettle cover at the output end of the motor, and a discharge valve pipe is installed below the synthesis kettle body.

[0007] Preferably, the reactor heating mechanism includes multiple sets of platinum resistance temperature sensors arranged vertically in the reactor cavity, and a heater is fixedly arranged in the reactor cavity. A temperature controller is arranged on the outside of the main body of the synthesis reactor. The temperature controller is electrically connected to the heater and the platinum resistance temperature sensors. A liquid pipe is fixedly arranged on the main body of the synthesis reactor and is connected to the reactor cavity.

[0008] Preferably, the polymerization inhibitor distribution mechanism includes a plurality of nozzles evenly arranged on the reactor lid, the plurality of nozzles being arranged in a ring, an annular gas frame being fixedly arranged above the plurality of nozzles, and a polymerization inhibitor meter being fixedly arranged on the annular gas frame.

[0009] Preferably, the mixing mechanism includes a rotating rod connected to the output end of the motor. Two ring plates are fixedly arranged in the vertical direction of the rotating rod. Multiple side frames are evenly arranged on the side of the ring plates. Multiple connecting columns are evenly arranged on the corresponding upper and lower side frames. A rod sleeve is fixedly arranged on the rotating rod. The rod sleeve is located between the two ring plates. Multiple mixing plates are evenly arranged on the rod sleeve. A support plate is fixedly arranged at the bottom of the rotating rod. Multiple lower scraper frames are evenly arranged on the side of the support plate. Multiple bottom mixing columns are evenly arranged on the lower scraper frames.

[0010] Preferably, connecting frames are fixedly provided at the upper and lower corresponding ends of the side frames, and scraper strips are provided on the outer side of the connecting frames.

[0011] Preferably, a PTFE anti-stick layer is provided on the inner wall of the synthesis reactor body and the reactor lid, and the PTFE anti-stick layer is 3-6 mm thick.

[0012] The advantages of this utility model are:

[0013] This invention connects an external N2 pipeline to a gas flow controller and controls the N2 flow rate between 0-50 L / min, thus isolating the air and preventing oxidation-induced self-polymerization.

[0014] This invention, through the structural design of the polymerization inhibitor distribution mechanism, connects hydroquinone polymerization inhibitor solution to the polymerization inhibitor meter and uses an annular nozzle to ensure that the polymerization inhibitor is dispersed and sprayed onto the material surface, avoiding the accumulation of the polymerization inhibitor and affecting the anti-self-polymerization effect during the amino acrylate polymerization reaction.

[0015] This invention, through the structural design of the mixing mechanism, enables rapid and uniform mixing of acrylate amino ester materials in the main body of the synthesis reactor, avoiding excessively high local concentrations of raw materials in the synthesis of acrylate amino ester, which could lead to the formation of polyacrylic acid polymers.

[0016] This invention prevents self-polymers from adhering to the inner walls of the synthesis reactor body and lid by setting a PTFE anti-stick layer on the inner walls of the reactor body and lid. Attached Figure Description

[0017] 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a partial sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the vessel lid and the mixing mechanism;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0023] In the diagram: 1. Main body of the synthesis reactor; 2. Support frame; 3. Reactor lid; 4. Reactor cavity; 5. Rock wool insulation layer; 6. Feed pipe; 7. Inert gas interface; 8. Gas flow controller; 9. Motor; 10. Discharge valve pipe; 11. Platinum resistance temperature sensor; 12. Heater; 13. Temperature controller; 14. Liquid pipe; 15. Nozzle; 16. Circulating gas frame; 17. Inhibitor meter; 18. Rotating rod; 19. Ring plate; 20. Side frame; 21. Connecting column; 22. Rod sleeve; 23. Mixing plate; 24. Support plate; 25. Lower scraper frame; 26. Bottom mixing column; 27. Connecting frame; 28. Scraper. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses an acrylate amino ester synthesis reactor that prevents self-polymerization. (See also...) Figures 1-5 An anti-self-polymerization acrylate synthesis reactor includes a reactor body 1 made of stainless steel. A support 2 is fixedly mounted at the bottom of the reactor body 1, and a control panel is mounted on the support 2. A PLC controller is mounted on the control panel, and the control panel is electrically connected to the electrical components in the device. A reactor cover 3 is detachably mounted on the top of the reactor body 1. A reactor cavity 4 is formed in the shell of the reactor body 1, and a reactor heating mechanism is mounted on the reactor cavity 4 to heat the acrylate material added to the reactor body 1. A rock wool insulation layer 5 is fixedly mounted on the outer side of the reactor body 1 to improve its insulation performance. A feed pipe 6 and an inert gas interface 7 are fixedly mounted on the reactor cover 3. The feed pipe 6 is used to add the acrylate material, and a gas flow controller 8 is fixedly mounted on the inert gas interface 7. An external N2 pipeline is connected, and the N2 flow rate is controlled between 0-50 L / min to isolate air and prevent oxidation-induced self-polymerization. The main body 1 of the synthesis reactor is equipped with a polymerization inhibitor distribution mechanism. The structure of the polymerization inhibitor distribution mechanism is designed so that hydroquinone polymerization inhibitor solution is connected to the polymerization inhibitor meter 17 and sprayed onto the material surface through the annular nozzle 15, which can ensure that the polymerization inhibitor is dispersed and sprayed onto the material surface, avoiding the aggregation of polymerization inhibitor and affecting the anti-self-polymerization effect during the synthesis of acrylate amino ester. A motor 9 is installed above the reactor lid 3, and the output end of the motor 9 passes through the reactor lid 3 to install a mixing mechanism, which drives the mixing mechanism. Through the structure of the mixing mechanism, the acrylate amino ester material in the main body 1 of the synthesis reactor can be quickly and uniformly mixed, avoiding excessively high local concentration of raw materials in the synthesis of acrylate amino ester, which would form polyacrylic acid polymers. A discharge valve pipe 10 is installed below the main body 1 of the synthesis reactor to discharge the synthesized acrylate amino ester.

[0027] Reference Figure 3 The reactor heating mechanism includes multiple sets of platinum resistance temperature sensors 11 arranged vertically in the reactor cavity 4, and a heater 12 is fixedly arranged in the reactor cavity 4. A temperature controller 13 is arranged on the outside of the reactor body 1. The temperature controller 13 is electrically connected to the heater 12 and the platinum resistance temperature sensors 11. A liquid pipe 14 is fixedly arranged on the reactor body 1 and is connected to the reactor cavity 4. By setting an appropriate temperature threshold in the temperature controller 13 and controlling the operation of the heater 12, the multiple sets of platinum resistance temperature sensors 11 heat the heat transfer oil delivered to the reactor cavity 4, thereby processing the materials inside the reactor body 1.

[0028] Reference Figure 1 and Figure 2The polymerization inhibitor distribution mechanism includes multiple nozzles 15 evenly arranged on the kettle cover 3. The multiple nozzles 15 are arranged in a ring. An annular air frame 16 is fixedly installed above the multiple nozzles 15. A polymerization inhibitor meter 17 is fixedly installed on the annular air frame 16. Through the structural arrangement of the polymerization inhibitor distribution mechanism, hydroquinone polymerization inhibitor solution is connected to the polymerization inhibitor meter 17. Through the annular nozzles 15, it can be ensured that the polymerization inhibitor is dispersed and sprayed onto the surface of the material, avoiding the aggregation of the polymerization inhibitor and affecting the anti-self-polymerization effect during the amino acrylate reaction.

[0029] Reference Figure 4 and Figure 5 The mixing mechanism includes a rotating rod 18 connected to the output end of a motor 9. Two ring plates 19 are fixedly installed vertically on the rotating rod 18. Multiple side frames 20 are evenly arranged on the sides of the ring plates 19, and multiple connecting columns 21 are evenly arranged on the corresponding upper and lower side frames 20. A rod sleeve 22 is fixedly installed on the rotating rod 18, located between the two ring plates 19. Multiple mixing plates 23 are evenly arranged on the rod sleeve 22. A support plate 24 is fixedly installed at the bottom of the rotating rod 18. Multiple lower scraper frames 25 are evenly arranged on the sides of the support plate 24, and multiple bottom mixing columns 26 are evenly arranged on the lower scraper frames 25. Through this structure, the acrylate amino ester material in the main body 1 of the synthesis reactor can be quickly and evenly mixed, avoiding excessively high local concentrations of the raw materials for the synthesis of acrylate amino ester, which would form polyacrylic acid polymers. It also cleans the self-polymers attached to the lower inner wall of the main body 1 of the synthesis reactor.

[0030] Reference Figure 4 and Figure 5 Connecting frames 27 are fixedly installed at the ends of the upper and lower corresponding side frames 20. Scraper strips 28 are installed on the outer side of the connecting frames 27 to clean the self-polymers attached to the inner wall of the synthesis reactor body 1.

[0031] Reference Figure 3 A PTFE anti-stick layer is provided on the inner wall of the synthesis reactor body 1 and the reactor lid 3. The thickness of the PTFE anti-stick layer is 3-6 mm. This structure prevents the self-polymer from adhering to the inner wall of the synthesis reactor body 1 and the reactor lid 3.

[0032] Working principle: When synthesizing amino acrylates;

[0033] An external N2 pipeline is pre-connected to the gas flow controller 8, and the N2 flow rate is controlled between 0-50 L / min to isolate air and prevent oxidation-induced self-polymerization.

[0034] Connect the feed pipe 6 to the external feed pipe for feeding the acrylate amino ester material, and feed the acrylate amino ester material into the main body 1 of the synthesis reactor;

[0035] The acrylate amino ester material placed in the main body 1 of the synthesis reactor is heated by the structure of the reactor body heating mechanism. Heat transfer oil is injected into the reactor cavity 4 through the liquid pipe 14. A suitable temperature threshold is set in the temperature controller 13 and the operation of the heater 12 is controlled. Multiple sets of platinum resistance temperature sensors 11 heat the heat transfer oil delivered to the reactor cavity 4, thereby processing the material inside the main body 1 of the synthesis reactor.

[0036] By using the structure of the polymerization inhibitor distribution mechanism, hydroquinone polymerization inhibitor solution is connected to the polymerization inhibitor meter 17 and sprayed onto the material surface through the annular nozzle 15, thus avoiding the aggregation of polymerization inhibitor and affecting the anti-self-polymerization effect during the amino acrylate reaction.

[0037] Through the structural design of the mixing mechanism, the acrylate amino ester material in the main body 1 of the synthesis vessel can be quickly and uniformly mixed, avoiding excessively high local concentrations of raw materials in the synthesis of acrylate amino ester, which would form polyacrylic acid polymers. When the motor 9 runs, the rotating rod 18 rotates. At this time, the connecting columns 21 on the upper and lower corresponding side frames 20 mix the material in the main body 1 of the synthesis vessel. The outer side of the connecting frame 27 is equipped with a scraper 28 to clean the self-polymers attached to the inner wall of the main body 1 of the synthesis vessel. The mixing plate 23 on the rod sleeve 22 improves the mixing effect of the material. The support plate 24 at the bottom of the rotating rod 18 rotates, causing the lower scraper 25 on the side of the support plate 24 to rotate synchronously, cleaning the self-polymers attached to the lower inner wall of the main body 1 of the synthesis vessel. The bottom mixing column 26 on the lower scraper 25 improves the mixing effect at the bottom of the main body 1 of the synthesis vessel.

[0038] By setting a PTFE anti-stick layer on the inner wall of the synthesis reactor body 1 and the reactor lid 3, the self-polymer is prevented from adhering to the inner wall of the synthesis reactor body 1 and the reactor lid 3.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A self-polymerizing acrylate synthesis reactor, comprising a reactor body (1); characterized in that: A support (2) is fixedly installed at the bottom of the main body (1) of the synthesis reactor. A reactor cover (3) is detachably installed on the top of the main body (1). A reactor cavity (4) is opened on the shell of the main body (1). A reactor heating mechanism is installed on the reactor cavity (4). A rock wool insulation layer (5) is fixedly installed on the outside of the main body (1). A feed pipe (6) and an inert gas interface (7) are fixedly installed on the reactor cover (3). A gas flow controller (8) is fixedly installed on the inert gas interface (7). An inhibitor placement mechanism is installed on the main body (1). A motor (9) is installed above the reactor cover (3). A mixing mechanism is installed through the reactor cover (3) at the output end of the motor (9). A discharge valve pipe (10) is installed below the main body (1).

2. The acrylate amino ester synthesis reactor according to claim 1, characterized in that: The reactor heating mechanism includes multiple sets of platinum resistance temperature sensors (11) arranged vertically in the reactor cavity (4), and a heater (12) is fixedly arranged in the reactor cavity (4). A temperature controller (13) is arranged on the outside of the main body (1) of the synthesis reactor. The temperature controller (13) is electrically connected to the heater (12) and the platinum resistance temperature sensors (11). A liquid pipe (14) is fixedly arranged on the main body (1) of the synthesis reactor. The liquid pipe (14) is connected to the reactor cavity (4).

3. The acrylate amino ester synthesis reactor according to claim 1, characterized in that: The polymerization inhibitor distribution mechanism includes a plurality of nozzles (15) evenly arranged on the kettle cover (3). The plurality of nozzles (15) are arranged in a ring. An annular gas rack (16) is fixedly arranged above the plurality of nozzles (15). A polymerization inhibitor meter (17) is fixedly arranged on the annular gas rack (16).

4. The acrylate amino ester synthesis reactor according to claim 3, characterized in that: The mixing mechanism includes a rotating rod (18) connected to the output end of the motor (9). Two ring plates (19) are fixedly arranged in the vertical direction on the rotating rod (18). Multiple side frames (20) are evenly arranged on the side of the ring plates (19). Multiple connecting columns (21) are evenly arranged on the corresponding side frames (20). A rod sleeve (22) is fixedly arranged on the rotating rod (18). The rod sleeve (22) is located between the two ring plates (19). Multiple mixing plates (23) are evenly arranged on the rod sleeve (22). A support plate (24) is fixedly arranged at the bottom of the rotating rod (18). Multiple lower scraper frames (25) are evenly arranged on the side of the support plate (24). Multiple bottom mixing columns (26) are evenly arranged on the lower scraper frames (25).

5. The acrylate amino ester synthesis reactor according to claim 4, characterized in that: A connecting frame (27) is fixedly provided at the upper and lower corresponding ends of the side frame (20), and a scraper (28) is provided on the outer side of the connecting frame (27).

6. The acrylate amino ester synthesis reactor according to claim 1, characterized in that: The inner walls of the synthesis reactor body (1) and reactor lid (3) are provided with a PTFE anti-stick layer, the thickness of which is 3-6 mm.

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