Production device of modified tert-vinegar emulsion

Abstract

The utility model belongs to the technical field of chemical equipment, and discloses a production device of modified tert-vinegar emulsion, which comprises a reaction kettle, and a feed port of the reaction kettle is respectively communicated with an emulsifier mixing tank, a monomer mixing tank, a polyvinyl alcohol tank, a water tank, a sodium persulfate tank, a first coupling agent tank and a second coupling agent tank; a feeding hole of the emulsifier mixing tank is respectively communicated with an anionic emulsifier tank and a nonionic emulsifier tank, and a feeding hole of the monomer mixing tank is respectively communicated with a vinyl versatate tank and a vinyl acetate tank; a discharge hole of the reaction kettle is sequentially communicated with a blending kettle, a heat exchanger and a filtering kettle through a pipeline; a discharge hole of the filtering kettle is respectively communicated with a finished product storage tank or a premixing kettle, and a discharge hole of the premixing kettle is communicated with a spray dryer. The production device for the modified tert-vinegar emulsion is simple in production process, high in production efficiency, good in safety and good in product quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and specifically relates to a production device for modified tertiary vinegar emulsion. Background Art

[0002] Tertiary acetic acid emulsion is one of the most important products in emulsion adhesives. It is widely used in human life because of its low price, wide application, safety and environmental protection. Traditional tertiary acetic acid emulsion combines the advantages of various emulsions to achieve a preliminary balance of permeability, compatibility with cement, and water resistance, but its bonding strength and water resistance are still not ideal, especially when further prepared into redispersible latex powder, due to the addition of protective colloids, its water resistance will be further reduced. Therefore, it is necessary to modify the traditional tertiary acetic acid emulsion. In order to ensure the process control of the modification process, the corresponding process equipment must be designed for matching. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a production device for modified tertiary vinegar emulsion with simple production process, high production efficiency, good safety and good product quality.

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

[0005] A production device for modified tertiary vinegar emulsion comprises a reactor, wherein a feed port of the reactor is connected to an emulsifier mixing tank, a monomer mixing tank, a polyvinyl alcohol tank, a water tank, a sodium persulfate tank, a first coupling agent tank and a second coupling agent tank through a pipeline, a valve, a flow meter and a pump respectively; a feed port of the emulsifier mixing tank is connected to an anionic emulsifier tank and a nonionic emulsifier tank respectively through a pipeline, a valve, a flow meter and a pump respectively, and a feed port of the monomer mixing tank is connected to a tertiary ethylene carbonate tank and a vinyl acetate tank respectively through a pipeline, a valve, a flow meter and a pump respectively; a discharge port of the reactor is connected to a blending kettle, a heat exchanger and a filtering kettle in sequence through a pipeline, a valve, a flow meter and a pump; a discharge port of the filtering kettle is connected to a finished product storage tank or a premixing kettle through a pipeline, a valve and a pump respectively, and a discharge port of the premixing kettle is connected to a spray dryer through a pipeline, a valve, a flow meter and a pump; and the valve, the flow meter and the pump are all 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] Furthermore, the cold medium storage tank and the hot medium storage tank are connected to the coil built into the reactor through a three-way valve and a pipeline.

[0008] Preferably, the reactor is provided with a remote thermometer and a liquid level gauge, which are electrically connected to the automatic control system. The blending kettle is also provided with a remote thermometer and a liquid level gauge, and each tank connected to the reactor feed port is provided with a liquid level gauge.

[0009] Preferably, a stirring device is provided in the blending kettle. The feed port of the blending kettle is connected to a water tank and an alkali tank respectively through a pipeline, a valve, a flow meter and a pump. The viscosity and pH value of the material in the kettle are adjusted, and the material is allowed to cool naturally during the blending process.

[0010] Preferably, the heat exchanger is a water-cooled shell and tube heat exchanger, wherein the tube side carries the material and the shell side carries the water. The heat exchanger is also connected to a cold water supply device and a cold water recovery device respectively.

[0011] Preferably, the filtering kettle is provided with a bag filtering device.

[0012] Preferably, the feed port of the premixing kettle is also connected to a polyvinyl alcohol tank and a calcium carbonate tank through a pipeline.

[0013] Preferably, the automatic control system is a DCS control system.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model obtains the modified tertiary vinegar emulsion by fully mixing different components, thereby improving the bonding strength and water resistance of the product; if a powder product is required, polyvinyl alcohol and an anti-caking agent are added to the modified tertiary vinegar emulsion and the powder is prepared after spray drying to meet market demand; because the process flow is short, the production process is simple, and the common valves, pumps, flow meters, etc. between various devices are connected to the automatic control system, so the production process parameters can be better controlled to ensure product quality.

[0016] In short, the utility model has the advantages of simple production process, high production efficiency, good safety, and good product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Among them, 1. Reactor; 2. Emulsifier mixing tank; 21. Anionic emulsifier tank; 22. Nonionic emulsifier tank; 3. Monomer mixing tank; 31. Polyvinyl carbonate tank; 32. Vinyl acetate tank; 4. Polyvinyl alcohol tank; 5. Water tank; 6. Sodium persulfate tank; 7. First coupling agent tank; 8. Second coupling agent tank; 9. Blending kettle; 10. Heat exchanger; 11. Filter kettle; 12. Finished product storage tank; 13. Premixing kettle; 14. Spray dryer. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, a production device for modified tertiary vinegar emulsion includes a reactor 1, a feed inlet (not marked) of the reactor 1 is connected to an emulsifier mixing tank 2, a monomer mixing tank 3, a polyvinyl alcohol tank 4, a water tank 5, a sodium persulfate tank 6, a first coupling agent tank 7 and a second coupling agent tank 8 through a pipeline (not marked), a valve (not marked), a flow meter (not marked) and a pump (not marked); a feed inlet (not marked) of the emulsifier mixing tank 2 is connected to an anionic emulsifier tank 21 and a nonionic emulsifier tank 22 through a pipeline, a valve, a flow meter and a pump, respectively. The outlet (not shown) of the reactor 1 is connected to the tert-butyl vinyl carbonate tank 31 and the vinyl acetate tank 32 respectively through pipelines, valves, flow meters and pumps; the outlet (not shown) of the reactor 1 is connected to the blending reactor 9, the heat exchanger 10 and the filtering reactor 11 in sequence through pipelines, valves, flow meters and pumps; the outlet (not shown) of the filtering reactor 11 is connected to the finished product storage tank 12 or the premixing reactor 13 respectively through pipelines, valves and pumps, and the outlet (not shown) of the premixing reactor 13 is connected to the spray dryer 14 through pipelines, valves, flow meters and pumps; the valves, flow meters and pumps are all electrically connected to the automatic control system (not shown).

[0021] In actual production, the materials in the anionic emulsifier tank 21 (alkylbenzene sulfonate) and the nonionic emulsifier tank 22 (fatty alcohol polyoxyethylene ether) are first mixed in the emulsifier mixing tank 2 at a weight ratio of 1:4 to obtain an emulsifier; the materials in the tert-butyl ester tank 31 and the vinyl acetate tank 32 are mixed in the monomer mixing tank 3 at a weight ratio of 40:60 to obtain a main monomer; then, polyvinyl alcohol (10% by weight of the main monomer) and 70% by weight of water are added to the reactor 1 and the temperature is raised to 90° C. to dissolve the polyvinyl alcohol, and then the temperature is lowered to 85° C., and 0.5% by weight of the main monomer emulsifier is added, and 1% by weight of the main monomer sodium persulfate is added dropwise, and when the amount of sodium persulfate added is about 25%, it is stopped, and 50% by weight of the main monomer is added dropwise, and when 50% by weight of the main monomer is added dropwise, it is kept warm at 85° C. for 20 minutes; then 10% by weight of the main monomer and the first coupling agent are added dropwise. (methacryloxypropylmethyldiethoxysilane), after the addition is completed, keep warm for 10 minutes, then add the remaining main monomer and the second coupling agent (vinyl triisopropoxysilane), after the above materials are added, the remaining sodium persulfate is added within 20 minutes, then keep warm for 60 minutes, heat to 90°C and keep warm for another 60 minutes; the material is transported to the blending kettle 9 to blend the viscosity (3000mPa.S) and pH value (7.0), and the material is cooled naturally at the same time. The blended material is transported to the heat exchanger 10 to cool the material to room temperature and enter the filter kettle 11 equipped with bag filter for filtration. The filtered material is the modified tertiary vinegar emulsion; if you want to prepare it into latex powder, the material is transported to the premixing kettle 13, add 2.5% of polyvinyl alcohol and 10% of calcium carbonate equivalent to the weight of the modified tertiary vinegar emulsion, mix well, and then transport it to the spray dryer 14 to make a powder.

[0022] 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 production device for modified tertiary vinegar emulsion, characterized in that: The invention comprises a reactor, wherein the feed port of the reactor is respectively connected with an emulsifier mixing tank, a monomer mixing tank, a polyvinyl alcohol tank, a water tank, a sodium persulfate tank, a first coupling agent tank and a second coupling agent tank through pipelines; the feed port of the emulsifier mixing tank is respectively connected with an anionic emulsifier tank and a nonionic emulsifier tank, and the feed port of the monomer mixing tank is respectively connected with a tert-butyl vinyl carbonate tank and a vinyl acetate tank; the discharge port of the reactor is sequentially connected with a blending kettle, a heat exchanger and a filtering kettle through pipelines; the discharge port of the filtering kettle is respectively connected with a finished product storage tank or a premixing kettle through pipelines, and the discharge port of the premixing kettle is connected with a spray dryer through pipelines; valves, flow meters and pumps are all electrically connected to an automatic control system.

2. The production device of modified tertiary vinegar emulsion 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 production device of modified tertiary vinegar emulsion according to claim 1, characterized in that: A remote thermometer and a liquid level gauge are arranged in the reactor, and the remote thermometer and the liquid level gauge are electrically connected to the automatic control system respectively.

4. The production device of modified tertiary vinegar emulsion according to claim 1, characterized in that: The blending kettle is provided with a stirring device, a remote thermometer and a liquid level gauge; the feed port of the blending kettle is respectively connected with a water tank and an alkali tank through pipelines.

5. The production device of modified tertiary vinegar emulsion according to claim 1, characterized in that: The heat exchanger is a water-cooled shell and tube heat exchanger.

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

7. The production device of modified tertiary vinegar emulsion according to claim 1, characterized in that: The feed port of the premixing kettle is also connected to a polyvinyl alcohol tank and a calcium carbonate tank through a pipeline.

8. The production device of modified tertiary vinegar emulsion according to claim 1, characterized in that: The automatic control system is a DCS control system.

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