Energy-saving production device and control method of water-based acrylic resin

Abstract

The application discloses an energy-saving production device and control method of water-based acrylic resin. The device comprises a mixing reaction kettle, a dropwise adding reaction tank and a finished product storage tank. The method comprises metering and feeding, mixing and discharging, initiation and control, heat preservation and neutralization. The energy-saving production device and control method of water-based acrylic resin can improve the production efficiency of the water-based acrylic resin, reduce the energy consumption in the production process, reduce the production cost of the water-based acrylic resin, and improve the production operation skill and operation quality of the water-based acrylic resin. In the production operation process, only the "reaction temperature" of the mixing reaction kettle is controlled to control the whole situation, the whole device is simple to operate, and the controlled process parameters are few and precise. In the whole production process, the heat generated by the chemical reaction is fully utilized to realize the energy "self-sufficiency" of the production system.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of high molecular synthetic resin production, and particularly relates to an energy-saving production device and control method of water-based acrylic resin. BACKGROUND

[0002] The water-based acrylic resin is milky white and slightly blue in appearance, can be infinitely mixed with ordinary water, and the film formed after drying has good waterproof performance and excellent weather resistance. It is a green and environmentally friendly new product with the most promising development in the resin industry in recent years.

[0003] The various interior and exterior wall paints, wood paint, metal paint, fire-retardant paint, anticorrosive paint, floor paint and the like synthesized from the water-based acrylic resin have obtained safety and environmental protection certification from relevant authoritative departments.

[0004] The water-based acrylic resin and downstream derivative products will represent the development direction of the future paint industry. In the existing industrial production technology of the water-based acrylic resin, multiple operating indexes are usually controlled, that is, the flow control of multiple monomer raw materials after metering and mixing. The flow control of the initiator after being configured to a certain concentration. The reaction temperature control in the reaction kettle and the heating steam pressure control. If a novice operates, it is difficult to describe how busy it is.

[0005] After years of technical accumulation, some people use a pump to deliver the mixture to a high-level metering tank with a stirrer. After stirring and mixing, a small amount of the mixture is first placed in the reaction kettle, and then a small amount of initiator solution is separately placed. Under stirring, the temperature is gradually increased to the temperature jump point of the initiation reaction. Then the flow of the mixture and the flow of the initiator solution are controlled respectively. In the alternation of steam heating and cooling water cooling, the reaction temperature and the reaction pressure are controlled. Until the dropwise reaction is completed, the heat preservation reaction stage can be entered.

[0006] Due to large fluctuations in the reaction temperature, the heat preservation reaction time is also prolonged. Some people use the method of adding initiator to remedy, some people use the method of prolonging the reaction time to remedy, and some people even prolong the heat preservation reaction time to more than 8-10 hours, so that the monomer residue in the semi-finished product can meet the requirements.

[0007] During the entire dropwise reaction process, not only the amount of the monomer mixture entering the reaction kettle needs to be controlled, but also the amount of the initiator needs to be considered, for fear that the proportion of the two will be out of balance. Not only the amount of the initiator and the monomer mixture needs to be concerned, but also the amount of the initiator and the monomer mixture needs to be adjusted frequently according to the high or low reaction temperature, otherwise it is difficult to ensure the quality of the subsequent reaction product.

[0008] The frequent adjustment of the amount of cooling water and steam entering during the production process is not only troublesome, but also brings many inconveniences to the on-site operation. Each cooling and heating exchange brings unnecessary waste of heat energy. SUMMARY

[0009] The present application aims at the above-mentioned deficiencies in the production of water-based acrylic resin, and proposes an energy-saving production device and control method for water-based acrylic resin.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0011] An energy-saving production device for water-based acrylic resin comprises a mixing reaction kettle, a dropwise adding reaction tank and a finished product storage tank, wherein:

[0012] The mixing reaction kettle is provided with a first inlet hole, a dropwise adding material pipe opening and a material pressing pipe outlet, and is provided with a first stirring mechanism inside, and is provided with a material pressing pipe which is communicated with the bottom of the inner cavity of the reaction kettle and the material pressing pipe outlet at the inner wall thereof, and is provided with a temperature adjusting mechanism at the outer wall thereof;

[0013] The dropwise adding reaction tank is provided with a first inlet and a second discharge opening, the first inlet is communicated with the material pressing pipe outlet of the mixing reaction kettle through a mixed material pipeline, the mixed material pipeline is provided with a first valve, the second discharge opening is communicated with the dropwise adding material pipe opening of the mixing reaction kettle, and the second discharge opening is provided with a third valve, and the dropwise adding reaction tank is provided with a second stirring mechanism inside;

[0014] The finished product storage tank is provided with a standby opening and a second inlet, the standby opening is connected with a vacuum pumping device, and the second inlet is communicated with the material pressing pipe outlet of the mixing reaction kettle through a finished product discharging pipeline, and the finished product discharging pipeline is provided with a second valve.

[0015] Further, the temperature adjusting mechanism comprises a jacket, a water inlet, a first water outlet and a second water outlet, the water inlet is provided with a fourth valve, the jacket is covered on the main part of the mixing reaction kettle from bottom to top, the water inlet is arranged at the bottom of the jacket, the first water outlet is arranged at one side of the jacket, and the second water outlet is arranged at the other side of the jacket.

[0016] Further, the mixing reaction kettle is further provided with a reaction material steam outlet, and the reaction material steam outlet is connected with a cooler.

[0017] Further, the first stirring mechanism comprises a first stirring motor, a gearbox, a first stirring shaft and cat-shaped stirring blades, the first stirring motor is connected to the first stirring shaft through the gearbox, and the cat-shaped stirring blades are installed on the first stirring shaft; the second stirring mechanism comprises a second stirring motor, a speed reducer, a second stirring shaft and double-layer stirring blades, the second stirring motor is connected to the second stirring shaft through the speed reducer, and the double-layer stirring blades are installed on the second stirring shaft.

[0018] Further, the dropwise addition reaction tank is provided with a first liquid level indicator, and the finished product storage tank is provided with a second liquid level indicator.

[0019] An energy-saving production control method of an aqueous acrylic resin comprises the following steps:

[0020] (1) metering and feeding: all raw materials are delivered to the inner cavity of the mixing reaction kettle according to the required proportion; the first stirring mechanism is turned on to rapidly mix the materials uniformly;

[0021] (2) mixing and discharging: the materials are sequentially discharged from the mixing reaction kettle through the pressure pipe, the pressure pipe outlet and the mixed material pipeline under stirring, and then enter the inner cavity of the dropwise addition reaction tank through the first feeding port of the dropwise addition reaction tank;

[0022] (3) initiation and control:

[0023] When the temperature adjusting mechanism is turned on in the high-temperature mode, heat exchange is performed between the temperature adjusting mechanism and the mixed materials in the mixing reaction kettle, so that the temperature in the mixing reaction kettle is increased; when the mixed materials in the kettle are heated to 85℃, the temperature adjusting mechanism is turned off, and the temperature in the kettle is increased to above 90℃ by relying on the inertia of heating, and the temperature is also the optimum temperature for initiating the chemical reaction of the materials in the kettle;

[0024] When the reaction temperature in the kettle suddenly rises due to the release of a large amount of heat energy, the second discharge port of the dropwise addition reaction tank is opened, and part of the mixed materials are discharged into the mixing reaction kettle; the addition of the cold materials reduces the reaction temperature in the kettle and increases the temperature of the cold materials; when the temperature approaches 90℃, the chemical reaction of the cold materials is initiated, and a large amount of chemical reaction heat is released, so that the control mode of cold and hot alternately affecting and restricting each other is realized;

[0025] (4) heat preservation and neutralization: when the mixing reaction kettle is running, the reaction temperature in the early stage is controlled at 95℃, and the reaction temperature in the later stage is controlled at above 100℃; the heat preservation reaction is controlled at above 100℃, and the heat preservation time is controlled at 2 hours; then the temperature is reduced to 30℃ by the temperature adjusting mechanism, and the temperature is neutralized to neutral by using the prepared 25% ammonia water solution; the finished product materials in the mixing reaction kettle are sequentially discharged from the pressure pipe outlet and the finished product discharging pipeline through the second feeding port of the finished product storage tank, and then enter the finished product storage tank.

[0026] Further, in the (1) metering and feeding, the raw materials fed into the mixing reaction kettle include deionized water, TX-10, K-12, polyacrylamide, styrene, butyl acrylate, methyl methacrylate, acrylic acid, and ammonium persulfate.

[0027] Further, a reactant material vapor outlet is further arranged on the mixing reaction kettle, and a cooler is connected to the reactant material vapor outlet; in the (3) initiation and control, when the temperature exceeds the predetermined temperature, the generated vapor is discharged into the cooler through the reactant material vapor outlet, is cooled and captured, and then is returned to the mixing reaction kettle.

[0028] Further, the temperature adjusting mechanism includes a jacket, a water inlet, a first water outlet, and a second water outlet, the fourth valve is arranged on the water inlet, the jacket covers the main body of the mixing reaction kettle from below to above, the water inlet is arranged at the bottom of the jacket, the first water outlet is arranged at one end of the jacket, and the second water outlet is arranged at the other end of the jacket; in the (3) initiation and control, hot water enters the jacket through the water inlet of the jacket and exchanges heat with the mixed material in the mixing reaction kettle, and low-temperature hot water flows out from the first water outlet and the second water outlet after heat exchange; when the mixed material in the kettle is heated to 85 DEG C, the water inlet is closed, and the temperature in the kettle is increased to above 90 DEG C by relying on the heating inertia; in the (4) heat preservation and neutralization, cooling water is introduced into the water inlet of the jacket for cooling treatment after heat preservation reaction.

[0029] Further, a first liquid level indicator is arranged on the dropwise adding reaction tank, and the amount of the material drawn from the mixing reaction kettle into the dropwise adding reaction tank is controlled through the first liquid level indicator; a second liquid level indicator is arranged on the finished product storage tank, and the total amount of the finished product is displayed through the second liquid level indicator in the (4) heat preservation and neutralization.

[0030] Compared with the prior art, the beneficial effects of the present application are:

[0031] The energy-saving production device and control method of the water-based acrylic resin can improve the production efficiency of the water-based acrylic resin, reduce the energy consumption in the production process, reduce the production cost of the water-based acrylic resin, and improve the production operation skill and operation quality of the water-based acrylic resin. In the production operation process of the device, only one index of "reaction temperature" in the mixing reaction kettle can control the whole situation, the whole device is simple to operate, and the controlled process parameters are few and precise. In the whole production process, the heat generated by the chemical reaction is fully utilized to realize the energy "self-sufficiency" of the production system. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of an energy-saving production device of a water-based acrylic resin;

[0033] Figure 2 is a schematic diagram of the structure of the mixed reaction kettle;

[0034] Figure 3 is a schematic diagram of the structure of the dropwise addition reaction kettle;

[0035] Figure 4 is a schematic diagram of the structure of the finished product storage tank.

[0036] Figure Mark: 1 mixed reaction kettle, 1-01 first discharge port, 1-02 first lower head, 1-03 jacket outer cylinder, 1-04 jacket, 1-05 jacket inner cylinder, 1-06 tank bottom pressure pipe, 1-07 water outlet (f-1), 1-08 pressure pipe outlet, 1-09 reaction material steam outlet, 1-10 finished product discharge pipeline, 1-11 mixed material pipeline, 1-12 cooler tube, 1-13 cooler, 1-14 first stirring motor, 1-15 gearbox, 1-16 dropwise addition material pipe, 1-17 first inlet hole, 1-18 first upper head, 1-19 water outlet (f-2), 1-20 first stirring shaft, 1-21 reaction kettle cavity, 1-22 cat type stirring paddle, 1-23 water inlet, 2 dropwise addition reaction kettle, 2-01 second discharge port, 2-02 second lower head, 2-03 reaction kettle cylinder, 2-04 reaction kettle cavity, 2-05 first flange, 2-06 first feed port, 2-07 second stirring motor, 2-08 speed reducer, 2-09 vent port, 2-10 second inlet hole, 2-11 second upper head, 2-12 second stirring shaft, 2-13 first liquid level indicator, 2-14 upper stirring paddle, 2-15 lower stirring paddle, 3 finished product storage tank, 3-01 third discharge port, 3-02 storage tank cylinder, 3-03 storage tank cavity, 3-04 vent pipe, 3-05 standby port, 3-06 second feed port, 3-07 third inlet hole, 3-08 third upper head, 3-09 second flange, 3-10 second liquid level indicator, 3-11 third lower head. DETAILED DESCRIPTION

[0037] The specific embodiments of the application are further described in detail with reference to the accompanying drawings.

[0038] As Figure 1 shown, the energy-saving production device of the water-based acrylic resin comprises a mixed reaction kettle 1, a dropwise addition reaction kettle 2, and a finished product storage tank 3. Among them:

[0039] The structure of the mixed reaction kettle 1 is as Figure 2As shown, the mixing reactor 1 includes a first vent 1-01, a first lower head 1-02, a jacket outer cylinder 1-03, a jacket 1-04, a jacket inner cylinder 1-05, a pressurized pipe 1-06, a water outlet (f-1) 1-07, a pressurized pipe outlet 1-08, a reactor material vapor outlet 1-09, a finished product discharge pipeline 1-10, a mixed material pipeline 1-11, a cooler tube 1-12, a cooler 1-13, a first stirring motor 1-14, a gearbox 1-15, a dropping material pipe 1-16, a first inlet hole 1-17, a first upper head 1-18, a water outlet (f-2) 1-19, a first stirring shaft 1-20, a reactor cavity 1-21, cat type stirring blades 1-22, and a water inlet 1-23. The first stirring motor 1-14 is connected to the first stirring shaft 1-20 through the gearbox 1-15, and the cat type stirring blades 1-22 are installed on the first stirring shaft 1-20. A pressurized pipe is arranged on the wall of the mixing reactor 1 to communicate the bottom of the reactor cavity 1-21 and the pressurized pipe outlet 1-08. The jacket 1-04 is arranged on the outer wall of the mixing reactor 1, and the jacket 1-04 covers the main body of the mixing reactor 1 from bottom to top. The water inlet 1-23 is arranged at the bottom of the jacket 1-04, and a fourth valve is arranged on the water inlet 1-23. The water outlet (f-1) 1-07 is arranged on one side of the jacket 1-04, and the second water outlet (f-2) is arranged on the other side of the jacket 1-04.

[0040] The structure of the dropping reactor 2 is shown in Figure 3 As shown, the dropping reactor 2 includes a second vent 2-01, a second lower head 2-02, a reactor cylinder 2-03, a reactor cavity 2-04, a first flange 2-05, a first feed inlet 2-06, a second stirring motor 2-07, a speed reducer 2-08, a vent 2-09, a second inlet hole 2-10, a second upper head 2-11, a second stirring shaft 2-12, a first liquid level indicator 2-13, upper stirring blades 2-14, and lower stirring blades 2-15. The first feed inlet 2-06 is connected to the pressurized pipe outlet 1-08 of the mixing reactor 1 through the mixed material pipeline 1-11, and a first valve is arranged on the mixed material pipeline 1-11. The second vent 2-01 is connected to the dropping material pipe 1-16 of the mixing reactor 1, and a third valve is arranged at the second vent 2-01. The second stirring motor 2-07 is connected to the second stirring shaft 2-12 through the speed reducer 2-08, and the double-layer stirring blades composed of the upper stirring blades 2-14 and the lower stirring blades 2-15 are installed on the second stirring shaft 2-12.

[0041] The structure of the finished product storage tank 3 is shown in Figure 4As shown, the finished product storage tank 3 includes a third drain port 3-01, a storage tank body 3-02, a storage tank inner cavity 3-03, a vent pipe 3-04, a spare port 3-05, a second feed port 3-06, a third inlet 3-07, a third upper end cap 3-08, a second flange 3-09, a second liquid level indicator 3-10, and a third lower end cap 3-11. The spare port 3-05 is connected to a vacuum pump. The second feed port 3-06 is connected to the pressure pipe outlet 1-08 of the mixing reactor 1 via the finished product discharge pipeline 1-10. A second valve is installed on the finished product discharge pipeline 1-10.

[0042] The control method for the energy-saving production equipment of this water-based acrylic resin includes:

[0043] 1. Metering and feeding;

[0044] After confirming that everything in mixing reactor 1 is normal, start the metering pumps for each raw material and deliver deionized water, TX-10, K-12, polyacrylamide, styrene, butyl acrylate, methyl methacrylate, acrylic acid, ammonium persulfate, etc., into the reactor cavity 1-21 according to the process requirements. After all raw materials enter mixing reactor 1, turn on the first stirring motor 1-14, and under the action of the gearbox 1-15, the first stirring shaft 1-20, and the cat-type stirring blades 1-22, the materials are quickly and evenly mixed.

[0045] 2. Mix well and export;

[0046] With the vacuum system activated, the material, under stirring, enters the inner cavity 2-04 of the dropping reaction vessel 2 through the pressure pipe 1-06 at the bottom of the vessel, the pressure pipe outlet 1-08, the mixing material pipeline 1-11, and the first feed inlet 2-06. The amount drawn in can be controlled by the first liquid level indicator 2-13. Alternatively, it can be determined by the liquid level of the remaining material in the mixing reaction vessel 1, ideally when it covers 1 / 3 of the cat-type stirring blades 1-22.

[0047] 3. To trigger or control;

[0048] With stirring, the fourth valve is opened, and hot water enters the first lower head 1-02 of the mixing reactor 1 through the inlet 1-23. It passes through the jacket 1-04 formed between the outer jacket 1-03 and the inner jacket 1-05, and exchanges heat with the mixture passing through the inner jacket 1-05 (i.e., the reactor cavity 1-21). The low-temperature hot water after heat exchange flows out from the outlet (f-1) 1-07 and the outlet (f-2) 1-19.

[0049] When the mixture inside the vessel is heated to 85°C, close the fourth valve of the hot water inlet. The inertia of heating will allow the temperature inside the vessel to rise to over 90°C, which is the optimal temperature for initiating a chemical reaction in the materials inside.

[0050] Because the reaction releases a large amount of heat energy, the reaction temperature in the kettle rises sharply. At this time, the third valve at the second vent 2-01 of the dropping reaction tank 2 can be opened to release some mixture into the mixing reaction kettle 1. The addition of cold material can reduce the reaction temperature in the mixing reaction kettle 1, while also increasing its own temperature. When the temperature approaches 90°C, it also triggers its own chemical reaction and releases a large amount of chemical reaction heat. This alternating control of cold and hot is the key control link to achieve energy-saving production of water-based acrylic resin.

[0051] Occasionally, the steam generated by overheating is discharged into the cooler 1-13 through the reaction material vapor outlet 1-09, captured by the cooling water in the cooler tube 1-12, and then returned to the reaction kettle. To ensure material balance in the production system.

[0052] 4. Insulation and neutralization;

[0053] When the mixing reaction kettle 1 is running, the reaction temperature in the early stage should be appropriately controlled at about 95°C, and the reaction temperature in the later stage should be appropriately controlled at above 100°C.

[0054] The insulation reaction should be controlled at above 100°C, and the insulation time is usually controlled at about 2 hours, and the monomer residual amount of the finished product can reach the standard. Then cooling water is introduced from the water inlet 1-23, the water outlet (f-1) 1-07 and the water outlet (f-2) 1-19 of the mixing reaction kettle 1 to cool to about 30°C, and then the prepared 25% ammonia solution is used for neutralization to neutral.

[0055] After the neutralization reaction is completed, vacuum is drawn through the standby port 3-05. The finished product material in the mixing reaction kettle 1 is discharged through the pressure pipe outlet 1-08 and the finished product discharge pipeline 1-10, and the second feed port 3-06 into the finished product storage tank 3. The total amount of the finished product can be displayed by the second liquid level indicator 3-10.

[0056] After the product is collected in batches, it needs to be fully analyzed and qualified, and then packaged and stored according to the batch.

[0057] The above only describes the preferred embodiments of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An energy-saving production apparatus for water-based acrylic resin, characterized in that, Includes a mixing reactor, a dropping reaction vessel, and a finished product storage tank, wherein: The mixing reactor is provided with a first inlet, a material dropper inlet, and a material pressure pipe outlet. A first stirring mechanism is provided inside the mixing reactor. A material pressure pipe is provided on the inner wall of the mixing reactor, connecting the bottom of the inner cavity of the reactor and the material pressure pipe outlet. A temperature regulating mechanism is provided on the outer wall of the mixing reactor. The dropping reaction tank is provided with a first feed inlet and a second discharge outlet. The first feed inlet is connected to the pressure pipe outlet of the mixing reactor through a mixed material pipeline. A first valve is provided on the mixed material pipeline. The second discharge outlet is connected to the dropping material inlet of the mixing reactor and a third valve is provided at the second discharge outlet. A second stirring mechanism is provided inside the dropping reaction tank. The finished product storage tank is equipped with a spare port and a second inlet. The spare port is connected to a vacuum pump. The second inlet is connected to the pressure pipe outlet of the mixing reactor through a finished product discharge pipeline. A second valve is installed on the finished product discharge pipeline. The energy-saving production control method of the device includes: (1) Metering and feeding: All raw materials are fed into the mixing reactor according to the process requirements; the first stirring mechanism is turned on to make the materials mix quickly and evenly; (2) Mixing and discharge: Under stirring, the material enters the inner cavity of the dropping reaction tank from the bottom of the mixing reactor through the pressure pipe, the pressure pipe outlet, and the mixing material pipeline. (3) Initiation and control: After the temperature regulation mechanism is turned on in high temperature mode, it exchanges heat with the mixture in the mixing reactor, causing the temperature in the mixing reactor to rise; when the mixture in the reactor is heated to 85°C, the temperature regulation mechanism is turned off, and the temperature in the reactor is raised to above 90°C by the inertia of heating. This temperature is also the optimal temperature for initiating the chemical reaction of the material in the reactor. When the reaction temperature inside the vessel suddenly rises due to the release of a large amount of heat energy, the second discharge port of the drop reaction vessel is opened to release part of the mixture into the mixing reaction vessel; the addition of cold material lowers the reaction temperature inside the vessel while raising its own temperature. When the temperature approaches 90°C, it triggers its own chemical reaction and releases a large amount of chemical reaction heat, thus achieving a control method in which alternating hot and cold influence and restrict each other. (4) Heat preservation and neutralization: When the mixing reactor is running, the reaction temperature in the early stage is controlled at a relatively low 95℃, and the reaction temperature in the later stage is controlled at a relatively high 100℃ or above; the heat preservation reaction is controlled at above 100℃, and the heat preservation time is controlled at 2 hours; then the temperature is lowered to 30℃ by the temperature regulation mechanism, and neutralized to neutral by the prepared 25% ammonia solution; vacuum is drawn through the spare port of the finished product storage tank, so that the finished product material in the mixing reactor enters the finished product storage tank through the pressure pipe outlet, the finished product discharge pipeline, and the second feed port of the finished product storage tank.

2. The energy-saving production device for water-based acrylic resin according to claim 1, characterized in that, The temperature regulating mechanism includes a jacket, a water inlet, a first water outlet, and a second water outlet. The water inlet is equipped with a fourth valve. The jacket covers the main body of the mixing reactor from bottom to top. The water inlet is located at the bottom of the jacket, the first water outlet is located on one side of the jacket, and the second water outlet is located on the other side of the jacket.

3. The energy-saving production device for water-based acrylic resin according to claim 1, characterized in that, The mixing reactor is also equipped with a reactant vapor outlet, which is connected to a cooler.

4. The energy-saving production device for water-based acrylic resin according to claim 1, characterized in that, The first stirring mechanism includes a first stirring motor, a gearbox, a first stirring shaft, and cat-shaped stirring blades. The first stirring motor is connected to the first stirring shaft through the gearbox, and the cat-shaped stirring blades are installed on the first stirring shaft. The second stirring mechanism includes a second stirring motor, a reduction gearbox, a second stirring shaft, and double-layer stirring blades. The second stirring motor is connected to the second stirring shaft through the reduction gearbox, and the double-layer stirring blades are installed on the second stirring shaft.

5. The energy-saving production apparatus for water-based acrylic resin according to claim 1, characterized in that, The dropwise reaction vessel is equipped with a first liquid level indicator; the finished product storage tank is equipped with a second liquid level indicator.

6. The energy-saving production apparatus for water-based acrylic resin according to claim 1, characterized in that, In the metering and feeding process described in (1), the raw materials fed into the mixing reactor include deionized water, TX-10, K-12, polyacrylamide, styrene, butyl acrylate, methyl methacrylate, acrylic acid, and ammonium persulfate.

7. The energy-saving production device for water-based acrylic resin according to claim 1, characterized in that, The mixing reactor is also provided with a reactant steam outlet, which is connected to a cooler; in the initiation and control of (3), when the predetermined temperature is exceeded, the generated steam is discharged into the cooler through the reactant steam outlet, cooled and captured, and then returned to the mixing reactor.

8. The energy-saving production apparatus for water-based acrylic resin according to claim 1, characterized in that, The temperature regulation mechanism includes a jacket, an inlet, a first outlet, and a second outlet. The inlet is equipped with a fourth valve. The jacket covers the main body of the mixing reactor from bottom to top. The inlet is located at the bottom of the jacket, the first outlet is located at one end of the jacket, and the second outlet is located at the other end of the jacket. In the initiation and control phase (3), hot water enters the jacket through the inlet and exchanges heat with the mixture in the mixing reactor. The low-temperature hot water after heat exchange flows out from the first outlet and the second outlet. When the mixture in the reactor is heated to 85°C, the inlet is closed, and the temperature inside the reactor rises to above 90°C due to the inertia of heating. In the heat preservation and neutralization phase (4), after the heat preservation reaction, cooling water is introduced through the inlet of the jacket for cooling treatment.

9. The energy-saving production apparatus for water-based acrylic resin according to claim 1, characterized in that, The drop reaction tank is equipped with a first liquid level indicator. During the mixing and discharging process (2), the amount of material drawn into the drop reaction tank from the mixing reactor is controlled by the first liquid level indicator. The finished product storage tank is equipped with a second liquid level indicator. During the heat preservation and neutralization process (4), the total amount of the finished product is displayed by the second liquid level indicator.

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