A reaction vessel for the production of polyacrylate pressure-sensitive adhesive latex

Abstract

This utility model discloses a reaction vessel for producing polyacrylate pressure-sensitive adhesive latex, including a reaction vessel tank. A turbulent jacket mechanism is installed on the outer side of the reaction vessel tank. The turbulent jacket mechanism includes a jacket wall disposed on the outer circumferential surface of the reaction vessel tank. A deceleration vane is fixedly disposed on the inner wall of the jacket wall, and a turbulence-inducing vane is fixedly disposed on the outer circumferential surface of the reaction vessel tank. A turbulent space is formed between the turbulence-inducing vane and the deceleration vane. A heat-insulating seat is wrapped around the outer side of the jacket wall, and an isolation sleeve is fixedly disposed on the outer circumferential wall of the heat-insulating seat. This reaction vessel for producing polyacrylate pressure-sensitive adhesive latex, with its turbulent flow, can reduce local temperature differences, avoid heat exchange dead zones, and ensure the stability of temperature control during the production of polyacrylate pressure-sensitive adhesive latex; heat can be quickly absorbed by the vessel body, reducing heating time; and achieving efficient heat exchange between the heat exchange medium and the reaction vessel tank.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessels, specifically a reaction vessel for the production of polyacrylate pressure-sensitive adhesive latex. Background Technology

[0002] Pressure-sensitive adhesive (PSA) is a type of adhesive that can bond firmly to the substrate with only a light pressure. Polyacrylate pressure-sensitive adhesives have good bonding strength and oxidation resistance, and are widely used in many fields such as packaging, automobiles, construction, electronics, electrical insulation, medical and health care, and household life. In the synthesis and production of polyacrylate pressure-sensitive adhesives, the viscosity of the reactants in the reactor gradually increases. The sticky material easily adheres to the reactor wall, reducing the reaction rate and monomer conversion rate, prolonging production time, and increasing the difficulty of cleaning the reactor. Residual material on the inner wall can affect the quality of subsequent products. The polymerization reaction is a free radical polymerization, which is highly exothermic. A large amount of gas flow creates pressure inside the reactor, which can easily lead to runaway polymerization. Therefore, it is necessary to transfer the heat of polymerization in a timely manner and to use a uniform feeding device. Existing polyacrylate pressure-sensitive adhesive reactors are generally equipped with stirring devices, but the stirring method is relatively simple. During the material mixing process, the liquid flow direction is the same, resulting in poor mixing effect and the reaction conversion rate failing to meet expectations. To address the aforementioned issues, a search revealed Chinese patent CN214320118U, which discloses a polyacrylate pressure-sensitive adhesive reactor. The reactor includes a vessel body, a stirring device, and a feeding device. The feeding device comprises a high-level tank and a metering pump. The high-level tank is equipped with a paddle-type stirring device, a jacket, and a weighing sensor. A feeding pipe at the bottom of the tank connects to the reactor head. The feeding pipe is equipped with a bottom valve, a metering pump, and a feed valve. A bypass is also provided on the feeding pipe, and a valve is installed on the bypass. While the aforementioned device can clean the reactor wall in real time and improve production efficiency, and is equipped with a uniform feeding device for more stable polymerization reactions, in actual use, the reactor has a jacket on the outside. When heat exchange medium is introduced into the jacket, laminar flow is easily formed, and the medium flow exhibits a "layered sliding" characteristic. The relative movement between the flow layers is slow, and heat is mainly transferred through molecular diffusion. The heat transfer coefficient between the jacket and the reactor wall decreases significantly. For example, if hot water needs to be introduced through the jacket to heat the material inside the reactor, laminar flow makes it difficult for the reactor to absorb the heat from the hot water, resulting in a longer heating time. Similarly, it is also unable to efficiently remove heat from the reactor during cooling. Utility Model Content

[0003] The purpose of this invention is to provide a reaction vessel for the production of polyacrylate pressure-sensitive adhesive latex, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a reaction vessel for producing polyacrylate pressure-sensitive latex is provided, comprising a reaction vessel tank. A turbulent jacket mechanism is installed on the outer side of the reaction vessel tank. The turbulent jacket mechanism includes a jacket wall disposed on the outer circumferential surface of the reaction vessel tank. A deceleration plate is fixedly disposed on the inner wall of the jacket wall. A turbulence-inducing plate is fixedly disposed on the outer circumferential surface of the reaction vessel tank. A turbulent space is formed between the turbulence-inducing plate and the deceleration plate. A heat-insulating seat is wrapped around the outer side of the jacket wall. An isolation sleeve is fixedly disposed on the outer circumferential wall of the heat-insulating seat.

[0005] Furthermore, the turbulence-inducing plates are spirally distributed along the outer circumference of the reactor vessel, forming a heat exchange space between the turbulence-inducing plates and the jacket wall, and multiple sets of turbulence spaces are equidistantly distributed inside the heat exchange space.

[0006] Furthermore, the speed reducer is inclined upward, the angle between the speed reducer and the heat exchange space is 45 degrees, and the speed reducer is equidistantly distributed along the height of the jacket wall.

[0007] Furthermore, the insulation base is a rock wool board, with an inner isolation pad fixedly covering one side of the insulation base and an outer isolation pad fixedly covering the other side of the insulation base.

[0008] Furthermore, the outer and inner insulating pads have the same thickness, and both are made of PE film. The outer and inner insulating pads are combined to form the insulating and waterproof structure of the heat preservation seat.

[0009] Furthermore, the outer isolation pad is fixedly laid between the jacket wall and the insulation seat, and the inner isolation pad is fixedly laid between the isolation sleeve and the insulation seat.

[0010] Furthermore, the isolation sleeve has multiple air chambers arranged at equal intervals inside, and the cross-section of the isolation sleeve is rectangular, while the thickness of the isolation sleeve is the same as the thickness of the heat preservation base.

[0011] Furthermore, multiple sets of protective seats are fixedly installed on the outer circumference of the isolation sleeve, and the distance between two adjacent sets of protective seats is consistent, with the cross-section of the protective seats being semi-circular.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution introduces a cooling medium into the heat exchange space, which impacts the deceleration plates and turbulence plates. A turbulent space is formed between the deceleration plates and turbulence plates. The upward-sloping deceleration plates and turbulence plates create a turbulent space, enhancing medium turbulence, improving heat exchange efficiency, and enabling faster and more uniform temperature regulation of the material inside the reactor. Simultaneously, the turbulent flow reduces local temperature differences, avoids heat exchange dead zones, and ensures stable temperature control during the production of polyacrylate pressure-sensitive adhesive latex. Heat is quickly absorbed by the reactor body, reducing heating time and achieving highly efficient heat exchange between the heat exchange medium and the reactor body. 2. This solution uses multiple air chambers equidistantly arranged inside the isolation jacket. These air chambers are combined to form a heat insulation barrier. The thermal conductivity of air is lower than that of most solid materials, about 0.026 W / (m·K). The reserved air layer can form an additional heat insulation barrier. Especially in high-temperature jackets, such as those heated by steam, it can further reduce the heat transfer rate from the jacket to the rock wool and enhance the overall insulation effect. 3. This solution uses outer and inner isolation pads to waterproof the insulation base and the jacket wall, respectively, to prevent water vapor condensation on the outer wall of the jacket wall from wetting the insulation base, and at the same time, to prevent water vapor condensation on the outer wall of the isolation sleeve from wetting the insulation base; this also prevents the insulation base made of rock wool from getting damp, as the insulation performance of damp rock wool will decrease by more than 50%, ensuring long-term stable insulation effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the reaction vessel of this utility model; Figure 2 This is a cross-sectional view of the turbulent jacket mechanism and the reactor body of this utility model. Figure 3 The structure of this utility model Figure 2 Rear view; Figure 4 The structure of this utility model Figure 2 A bottom view; Figure 5 for Figure 4 A magnified structural diagram at point A in the diagram.

[0014] The following are labels in the diagram: 100, Turbulent jacket mechanism; 1, Turbulent vane; 2, Heat exchange space; 3, Jacket wall; 4, Speed ​​reducer; 5, Turbulent space; 6, Insulation seat; 7, Isolation sleeve; 71, Gas cavity; 72, Protective seat; 8, Outer isolation pad; 81, Inner isolation pad; 200, Reactor tank. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 This utility model provides a reaction vessel for the production of polyacrylate pressure-sensitive adhesive latex, including a reaction vessel tank 200. A turbulent jacket mechanism 100 is installed on the outer side of the reaction vessel tank 200. The turbulent jacket mechanism 100 includes a jacket wall 3 disposed on the outer ring surface of the reaction vessel tank 200. A deceleration plate 4 is fixedly disposed on the inner wall of the jacket wall 3. A turbulence-inducing plate 1 is fixedly disposed on the outer ring surface of the reaction vessel tank 200. A turbulent space 5 is formed between the turbulence-inducing plate 1 and the deceleration plate 4. A heat preservation seat 6 is wrapped around the outer side of the jacket wall 3. An isolation sleeve 7 is fixedly disposed on the outer circumferential wall of the heat preservation seat 6.

[0017] Working principle: When the reactor tank 200 is used, acrylate monomers, emulsifiers, initiators and other ingredients are added to the reactor in proportion, the temperature is raised to the set temperature, usually 70-90℃, and the emulsion polymerization reaction is carried out under stirring. After the reaction is completed, the temperature is lowered and the pH value is adjusted to obtain polyacrylate pressure-sensitive adhesive emulsion. A turbulent jacket mechanism 100 is provided on the outside of the reactor tank 200. The jacket wall 3 of the turbulent jacket mechanism 100 contains a flowing heat exchange medium, which can cool or heat the material inside the reactor tank 200. Specifically, the cooling medium enters the heat exchange space 2 and impacts the deceleration plate 4 and the turbulence-inducing plate 1. The turbulence-inducing plate 1 is spiral-shaped, and the deceleration plate 4 is inclined upwards, forming a turbulent space 5 between the deceleration plate 4 and the turbulence-inducing plate 1. After entering the heat exchange space 2, the cooling medium impacts the deceleration plate... On the spiral baffle 1, the upward-sloping deceleration plate 4 and the baffle 1 form a turbulent space 5, which can enhance the turbulence of the medium, improve the heat exchange efficiency, and make the temperature adjustment of the material in the reactor tank 200 faster and more uniform. At the same time, the turbulent state can reduce local temperature differences, avoid heat exchange dead zones, and ensure the stability of temperature control in the production of polyacrylate pressure-sensitive latex. For example, the heat of hot water in a turbulent flow state can be quickly absorbed by the reactor body, reducing the heating time; thus achieving efficient heat exchange between the heat exchange medium and the reactor tank 200.

[0018] like Figure 2 and Figure 5As shown: The outer side of the jacket wall 3 is wrapped with an insulation seat 6, which is made of rock wool. The insulation seat 6 can insulate the outer side of the jacket wall 3. At the same time, the insulation seat 6 and the isolation sleeve 7, as well as the insulation seat 6 and the jacket wall 3, are waterproofed and isolated by an outer isolation pad 8 and an inner isolation pad 81, respectively. This prevents water vapor condensed on the outer wall of the jacket wall 3 from wetting the insulation seat 6, and also prevents water vapor condensed on the outer wall of the isolation sleeve 7 from wetting the insulation seat 6. This also prevents the thermal conductivity of the rock wool insulation seat 6 from increasing sharply after it gets damp, as the insulation performance of damp rock wool will decrease by more than 50%, thus ensuring the long-term stability of the insulation effect.

[0019] like Figure 2 and Figure 5 As shown: Multiple sets of air chambers 71 are equidistantly arranged inside the isolation sleeve 7. The multiple sets of air chambers 71 are combined to form a heat insulation barrier. The thermal conductivity of air is lower than that of most solid materials, about 0.026 W / (m・K). The reserved air layer can form an additional heat insulation barrier. Especially in high-temperature jackets, such as steam heating, it can further reduce the heat transfer rate from the jacket to the rock wool and enhance the overall heat preservation effect.

[0020] like Figure 2-5 As shown: Multiple sets of protective seats 72 are equidistantly arranged on the outer side of the isolation sleeve 7. The protective seats 72 are semi-circular. The semi-circular structure can form a good fit with the outer wall of the isolation sleeve 7. The equidistant arrangement can make the force more uniform and effectively disperse the stress generated by external collision or compression, thereby enhancing the stability and impact resistance of the overall structure of the isolation sleeve 7. The equidistant arrangement not only ensures the comprehensiveness of the protection range, but also does not excessively increase the space occupied on the outside of the equipment, thus balancing the protection effect and space utilization.

[0021] In a preferred embodiment, the turbulence plate 1 is spirally distributed along the outer circumference of the reactor vessel 200, and a heat exchange space 2 is formed between the turbulence plate 1 and the jacket wall 3. Multiple sets of turbulence spaces 5 are distributed equidistantly inside the heat exchange space 2.

[0022] The speed reducer 4 is inclined upward, and the angle between the speed reducer 4 and the heat exchange space 2 is 45 degrees. At the same time, the speed reducer 4 is evenly distributed along the height position of the jacket wall 3.

[0023] The insulation base 6 is a rock wool board. One side of the insulation base 6 is fixedly covered with an inner isolation pad 81, and the other side of the insulation base 6 is fixedly covered with an outer isolation pad 8.

[0024] In a preferred embodiment, the outer insulating pad 8 and the inner insulating pad 81 have the same thickness. Both the outer insulating pad 8 and the inner insulating pad 81 are PE films. The outer insulating pad 8 and the inner insulating pad 81 are combined together to form the insulating and waterproof structure of the heat preservation seat 6.

[0025] The outer isolation pad 8 is fixedly laid between the jacket wall 3 and the insulation seat 6, and the inner isolation pad 81 is fixedly laid between the isolation sleeve 7 and the insulation seat 6.

[0026] The isolation sleeve 7 has multiple air chambers 71 arranged at equal intervals inside, and the cross-section of the isolation sleeve 7 is rectangular. At the same time, the thickness of the isolation sleeve 7 is the same as the thickness of the heat preservation base 6.

[0027] Multiple sets of protective seats 72 are fixedly installed on the outer circumference of the isolation sleeve 7, and the distance between two adjacent sets of protective seats 72 is the same. The cross-section of the protective seat 72 is semi-circular.

[0028] 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 kind of reaction kettle for producing polyacrylate pressure-sensitive latex emulsion, comprising reaction kettle tank body (200), it is characterized by: A turbulent jacket mechanism (100) is installed on the outside of the reactor tank (200). The turbulent jacket mechanism (100) includes a jacket wall (3) set on the outer ring surface of the reactor tank (200). A deceleration plate (4) is fixedly set on the inner wall of the jacket wall (3). A turbulence plate (1) is fixedly set on the outer ring surface of the reactor tank (200). A turbulent space (5) is formed between the turbulence plate (1) and the deceleration plate (4). A heat preservation seat (6) is wrapped around the outside of the jacket wall (3). An isolation sleeve (7) is fixedly set on the outer circumferential wall of the heat preservation seat (6).

2. The reaction kettle for producing polyacrylate pressure-sensitive latex emulsion according to claim 1, characterized in that: The turbulence plate (1) is spirally distributed along the outer circumference of the reactor vessel (200), and a heat exchange space (2) is formed between the turbulence plate (1) and the jacket wall (3). Multiple turbulence spaces (5) are distributed equidistantly inside the heat exchange space (2).

3. The reaction vessel for producing polyacrylate pressure-sensitive adhesive latex according to claim 1, characterized in that: The deceleration plate (4) is inclined upward, and the angle between the deceleration plate (4) and the heat exchange space (2) is 45 degrees. At the same time, the deceleration plate (4) is equidistantly distributed along the height position of the jacket wall (3).

4. The reaction vessel for producing polyacrylate pressure-sensitive adhesive latex according to claim 1, characterized in that: The insulation seat (6) is a rock wool board. One side of the insulation seat (6) is fixedly covered with an inner isolation pad (81), and the other side of the insulation seat (6) is fixedly covered with an outer isolation pad (8).

5. The reaction vessel for producing polyacrylate pressure-sensitive adhesive latex according to claim 4, characterized in that: The outer isolation pad (8) and the inner isolation pad (81) have the same thickness. Both the outer isolation pad (8) and the inner isolation pad (81) are PE films. The outer isolation pad (8) and the inner isolation pad (81) are combined together to form the isolation and waterproof structure of the heat preservation seat (6).

6. The reaction vessel for producing polyacrylate pressure-sensitive adhesive latex according to claim 5, characterized in that: The outer isolation pad (8) is fixedly laid between the jacket wall (3) and the insulation seat (6), and the inner isolation pad (81) is fixedly laid between the isolation sleeve (7) and the insulation seat (6).

7. The reaction vessel for producing polyacrylate pressure-sensitive adhesive latex according to claim 6, characterized in that: The isolation sleeve (7) has multiple air chambers (71) arranged equidistantly inside, and the cross-section of the isolation sleeve (7) is rectangular. At the same time, the thickness of the isolation sleeve (7) is the same as the thickness of the heat preservation seat (6).

8. The reaction vessel for producing polyacrylate pressure-sensitive adhesive latex according to claim 7, characterized in that: Multiple sets of protective seats (72) are fixedly installed on the outer circumference of the isolation sleeve (7), and the distance between two adjacent sets of protective seats (72) is consistent. The cross-section of the protective seat (72) is semi-circular.

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