Tert-acrylic emulsion production device

Abstract

The utility model belongs to the technical field of chemical equipment, and discloses a tert-acrylic emulsion production device which comprises a first premixing tank, a second premixing tank, a reaction kettle, a cooling kettle, a blending kettle, a filtering kettle and a finished product storage tank which are sequentially communicated through a pipeline, a flow valve and a pump, the feeding hole of the first premixing tank is also respectively communicated with an emulsifier tank and a soft monomer tank; the feeding hole of the second premixing tank is respectively communicated with an emulsifier tank and a hard monomer tank; the feeding hole of the reaction kettle is respectively communicated with an emulsifier tank, a water tank, a potassium persulfate tank, a sodium bicarbonate tank, a diacetone acrylamide tank, a tert-butyl hydroperoxide tank and a sodium formaldehyde sulfoxylate tank; and the flow valve and the pump are electrically connected to an automatic control system respectively. The production process is simple, the production efficiency is high, and the quality of produced products is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and specifically relates to a tert-propyl emulsion production device. Background Art

[0002] Among water-based coatings, acrylic coatings have the characteristics of light color, high transparency, color and gloss retention, full brightness, low absorption in the infrared region, and good color wettability. They are widely used, but their water resistance, chemical resistance, and adhesion are still unsatisfactory. Therefore, to solve this problem, tert-butyl carbonate was introduced. Tert-butyl carbonate has a tert-carbon structure, large steric hindrance, and good tolerance. After polymerization with acrylate, it can further improve the performance of acrylic emulsion and improve the appearance quality. The prepared tert-butyl emulsion has different preparation processes and equipment configurations according to the different types and proportions of components, and the effects of the obtained tert-butyl emulsion are also different. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a tert-acrylic emulsion production device with simple production process, high production efficiency and good product quality, and the produced product overcomes the defects of the existing products such as poor stability, poor corrosion resistance, hot stickiness and cold brittleness.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A tert-acrylic emulsion production device comprises a first premixing tank, a second premixing tank, a reactor, a cooling tank, a blending tank, a filtering tank and a finished product storage tank which are sequentially connected through pipelines, flow valves and pumps, wherein the discharge port of the former is connected to the feed port of the latter; the feed port of the first premixing tank is also connected to an emulsifier tank and a soft monomer tank respectively through pipelines, flow valves and pumps; the feed port of the second premixing tank is also connected to an emulsifier tank and a hard monomer tank respectively through pipelines, flow valves and pumps; the feed port of the reactor is also connected to an emulsifier tank, a water tank, a potassium persulfate tank, a sodium bicarbonate tank, a diacetone acrylamide tank, a tert-butyl hydroperoxide tank and a sodium formaldehyde sulfoxylate tank respectively through pipelines, flow valves and pumps; and the flow valve and the pump are respectively electrically connected to an automatic control system.

[0006] Preferably, the reactor is provided with a stirring device, a temperature regulating device and a heat-insulating layer; the temperature regulating device comprises a coil and is connected to an external cold medium storage tank and a hot medium storage tank.

[0007] Preferably, the reactor is provided with a remote thermometer and a liquid level gauge, which are electrically connected to the automatic control system. The cooling kettle and the blending kettle are also provided with a remote thermometer and a liquid level gauge, respectively, and each tank connected to the reactor feed port is provided with a liquid level gauge.

[0008] Preferably, the cooling kettle is provided with a jacket, a cooling coil is provided in the jacket, and two ends of the cooling coil are connected to a cooling liquid supply device and a cooling liquid recovery device through pipelines respectively.

[0009] Preferably, a stirring device is provided in the blending kettle. The feed port of the blending kettle is connected to the alkali tank and the adipic acid dihydrazide tank respectively through a pipeline, a flow valve and a pump. The pH value of the material in the kettle is adjusted, and an adipic acid dihydrazide aqueous solution is added.

[0010] Preferably, the filter kettle is a filter kettle provided with a bag filter device, and the mesh number of the filter bag is 300 meshes.

[0011] Preferably, the automatic control system is a DCS control system.

[0012] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model combines different components in batches through a complete set of equipment to prepare tertiary propylene emulsion with excellent weather resistance, adhesion, water resistance and the like; the flow valves, pumps, related power devices and the like connected between the equipment are all controlled by an automatic control system, which can better control production parameters and ensure product quality.

[0014] In short, the utility model has a simple production process, high production efficiency and good product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0016] Among them, 1. the first premixing tank; 2. the second premixing tank; 3. the reaction kettle; 4. the cooling kettle; 5. the blending kettle; 6. the filtering kettle; 7. the finished product storage tank; 8. the emulsifier tank; 9. the soft monomer tank; 10. the hard monomer tank; 11. the water tank; 12. the potassium persulfate tank; 13. the sodium bicarbonate tank; 14. the diacetone acrylamide tank; 15. the tert-butyl hydroperoxide tank; 16. the sodium formaldehyde sulfoxylate tank; 17. the alkali tank; 18. the adipic acid dihydrazide tank. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1As shown, a tert-propyl emulsion production device comprises a first premixing tank 1, a second premixing tank 2, a reactor 3, a cooling reactor 4, a blending reactor 5, a filtering reactor 6 and a finished product storage tank 7 which are sequentially connected through a pipeline (not shown), a flow valve (not shown) and a pump (not shown), wherein the discharge port of the former is connected to the feed port of the latter; the feed port of the first premixing tank 1 is also connected to an emulsifier tank 8 and a soft monomer tank 9 respectively through a pipeline, a flow valve and a pump; the feed port of the second premixing tank 2 is also connected to an emulsifier tank 8 and a hard monomer tank 10 respectively through a pipeline, a flow valve and a pump; the feed port of the reactor 3 is also connected to an emulsifier tank 8, a water tank 11, a potassium persulfate tank 12, a sodium bicarbonate tank 13, a diacetone acrylamide tank 14, a tert-butyl hydroperoxide tank 15 and a sodium formaldehyde sulfoxylate tank 16 respectively through a pipeline, a flow valve and a pump; the flow valve and the pump are respectively electrically connected to an automatic control system (not shown).

[0019] The feed inlet of the blending kettle 5 is connected to the alkali tank 17 and the adipic acid dihydrazide tank 18 respectively through a pipeline, a flow valve and a pump.

[0020] During actual production, first, 700 kg of deionized water, 7.5 kg of emulsifier (ammonium allyloxy fatty alcohol polyoxyethylene ether sulfate), 95 kg of sodium bicarbonate (10 WT%) aqueous solution and 98 kg of potassium persulfate (10 WT%) aqueous solution are input into a reactor 3, stirred and heated to 78° C.; then, 7.8 kg of emulsifier and 448 kg of soft monomer (a monomer mixture with high contents of butyl acrylate and versatate) are transported to a first premixing tank 1, and 9.7 kg of emulsifier and 552 kg of hard monomer (a monomer mixture with high contents of methacrylic acid and methyl methacrylate) are transported to a second premixing tank 2, and are fully stirred and mixed.

[0021] First, the pump from the second premixing tank 2 to the reactor 3 is turned on, and the material in the second premixing tank 2 is transported to the reactor 3 for reaction. When the material in the reactor 3 shows blue light, the input of the material in the second premixing tank 2 is stopped, and the temperature is kept for 30 minutes, and then the temperature is raised to 80° C. Then, the pump from the first premixing tank 1 to the second premixing tank 2 and the pump from the second premixing tank 2 to the reactor 3 are turned on at the same time (the former pump speed is set faster than the latter pump speed), the material in the first premixing tank 1 is mixed into the second premixing tank 2 and transported to the reactor 3 for reaction, and 138 kg of diacetone acrylamide is input into the reactor 3 at the same time, and all the materials are controlled to drip completely within 2.5 hours;

[0022] After all the materials have been dripped, the mixture is kept warm for 1 hour, then heated to 82°C and kept warm for another hour. After the end of the heat preservation, the mixture is cooled to 74°C, and 35 kg of tert-butyl hydroperoxide (15 WT%) aqueous solution is first dripped in. After 5 minutes, sodium formaldehyde sulfoxylate (15 WT%) aqueous solution is dripped in, and the mixture is kept warm for 30 minutes.

[0023] The material in the reaction kettle 3 is then transported to the cooling kettle 4 to be cooled to 30°C, and then transported to the blending kettle 5 to adjust the pH value of the material to 7.5, and then 134 kg of adipic acid dihydrazide (12 WT%) aqueous solution is added, and then transported to the filtering kettle 6, filtered with a 300-mesh filter bag to obtain tert-propyl emulsion, which is then transported to the finished product storage tank 7 for temporary storage.

[0024] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A tertiary propylene emulsion production device, characterized in that: It comprises a first premixing tank, a second premixing tank, a reactor, a cooling reactor, a blending reactor, a filtering reactor and a finished product storage tank which are sequentially connected through pipelines, flow valves and pumps; the feed port of the first premixing tank is also connected to an emulsifier tank and a soft monomer tank respectively through pipelines, flow valves and pumps; the feed port of the second premixing tank is also connected to an emulsifier tank and a hard monomer tank respectively through pipelines, flow valves and pumps; the feed port of the reactor is also connected to an emulsifier tank, a water tank, a potassium persulfate tank, a sodium bicarbonate tank, a diacetone acrylamide tank, a tert-butyl hydroperoxide tank and a sodium formaldehyde sulfoxylate tank respectively through pipelines, flow valves and pumps; the flow valves and pumps are respectively electrically connected to an automatic control system.

2. The tertiary propylene emulsion production device according to claim 1, characterized in that: The reactor is provided with a stirring device, a temperature regulating device and a heat-insulating layer.

3. The tertiary propylene emulsion production device according to claim 1, characterized in that: The reactor, cooling kettle and blending kettle are all provided with a remote thermometer and a liquid level gauge, and the remote thermometer and the liquid level gauge are respectively electrically connected to the automatic control system.

4. The tertiary propylene emulsion production device according to claim 1, characterized in that: The cooling kettle is provided with a jacket, and a cooling coil is arranged in the jacket.

5. The tertiary propylene emulsion production device according to claim 1, characterized in that: A stirring device is arranged in the blending kettle.

6. The tertiary propylene emulsion production device according to claim 1, characterized in that: The filter kettle is a filter kettle provided with a bag filter device.

7. The tertiary propylene emulsion production device according to claim 1, characterized in that: The automatic control system is a DCS control system.

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