Styrene-butadiene latex polymerization waste liquid recovery equipment

Abstract

This utility model discloses a styrene-butadiene latex polymerization waste liquid recycling device, specifically relating to the field of styrene-butadiene latex waste liquid recycling technology. It includes a recycling tank, a filter box fixedly mounted on top of the recycling tank, an installation frame inside the filter box, a filter plate fixedly mounted inside the installation frame, and a demulsification tank fixedly mounted at the bottom of the installation frame. The bottom of the demulsification tank penetrates the filter box and extends into the recycling tank. An ultrasonic transducer is installed inside the demulsification tank, and a solenoid valve is connected to the bottom of the demulsification tank. A sealing cover is fixedly mounted on top of the filter box. This utility model filters the styrene-butadiene latex polymerization waste liquid through an inclined filter plate inside the filter box, effectively trapping suspended impurities and larger polymer particles. Furthermore, the cavitation effect created by the ultrasonic transducer inside the demulsification tank greatly improves the demulsification rate of the waste liquid, promoting efficient separation of the oil and water phases, thereby improving the efficiency of subsequent waste liquid purification and reuse.

Description

Technical Field

[0001] This utility model relates to the field of styrene-butadiene latex waste liquid recycling technology, and more specifically to styrene-butadiene latex polymerization waste liquid recycling equipment. Background Technology

[0002] Styrene-butadiene latex is a synthetic latex produced by the emulsion polymerization of butadiene and styrene. Due to its excellent adhesion and aging resistance, it is widely used in asphalt modification, waterproofing projects, and adhesives. The production process of styrene-butadiene latex generates certain wastewater. This polymerization wastewater is produced during the copolymerization of butadiene and styrene to produce latex, and its composition is complex, typically containing unreacted monomers (butadiene and styrene), emulsifiers (such as fatty acid salts and alkyl sulfonates), initiator residues (such as persulfates), small amounts of polymer particles, and water. Direct discharge of this wastewater not only pollutes the environment but also wastes recyclable resources (such as monomers and water). Therefore, it needs to be recycled and treated using specialized equipment to achieve the dual goals of "resource recovery + compliant discharge."

[0003] For example, the existing technology announcement number CN217398593U describes a waste liquid recycling device for styrene-butadiene latex polymerization. This utility model is equipped with an exhaust device to facilitate the reduction of the toxicity of the harmful gases generated by the waste liquid before they are released into the environment. In addition, the filter screen is detachably connected to the bottom of the storage tank and extends out of the window on the side wall of the waste liquid tank, which facilitates the treatment of the used filter screen and ensures the filtration efficiency.

[0004] However, the existing technologies described above still have the following problems when in use: traditional styrene-butadiene latex polymerization wastewater recovery equipment relies on a large amount of electrolyte (such as calcium chloride) during demulsification, which easily leads to an increase in the salinity of subsequent wastewater, increasing the biochemical treatment load. Furthermore, a single demulsification method has low demulsification efficiency for complex emulsion systems, affecting recovery efficiency. Based on this, the present invention provides a styrene-butadiene latex polymerization wastewater recovery equipment with a high demulsification rate. Utility Model Content

[0005] To overcome the aforementioned deficiencies in the prior art, this utility model provides a styrene-butadiene latex polymerization waste liquid recovery device. The device filters the styrene-butadiene latex polymerization waste liquid using an inclined filter plate within a filter tank, effectively trapping suspended impurities and larger polymer particles. Furthermore, the cavitation effect created by the ultrasonic transducer within the demulsification tank significantly improves the demulsification rate of the waste liquid, promoting efficient separation of the oil and water phases. This enhances the efficiency of subsequent waste liquid purification and reuse, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a styrene-butadiene latex polymerization waste liquid recycling device, comprising a recycling tank, a filter box fixedly mounted on the top of the recycling tank, an installation frame inside the filter box, a filter plate fixedly mounted inside the installation frame, a demulsifying tank fixedly mounted on the bottom of the installation frame, the bottom of the demulsifying tank penetrating through the filter box and extending into the recycling tank, an ultrasonic transducer inside the demulsifying tank, a solenoid valve connected to the bottom of the demulsifying tank, a sealing cover fixedly mounted on the top of the filter box, and the bottom of the sealing cover being connected to the top of the installation frame by two symmetrically distributed connecting plates.

[0007] In a preferred embodiment, a support plate is fixedly installed inside the demulsifying tank, the top of the ultrasonic transducer is fixed to the bottom of the support plate, and an ultrasonic generator is fixedly installed on the top of the support plate.

[0008] In a preferred embodiment, a guide plate is fixedly provided on the top of the support plate, and the ultrasonic generator is located inside the guide plate. The guide plate plays a protective role on the top of the ultrasonic generator, preventing waste liquid from contaminating the ultrasonic generator and affecting its use.

[0009] In a preferred embodiment, both the mounting frame and the filter plate are inclined. A drain valve extends through one side of the filter box, with one end of the drain valve extending through the filter box and reaching the inclined mounting frame. Opening the drain valve allows impurities on the filter plate to be discharged from inside the filter box, preventing excessive impurities from clogging the filter plate and affecting the filtration efficiency.

[0010] In a preferred embodiment, a feed pipe extends through one side of the top of the sealing cap, and the bottom of the feed pipe is connected to the inside of the filter box for injecting styrene-butadiene latex polymerization waste liquid.

[0011] In a preferred embodiment, a drain pipe extends through the bottom of the recycling bin and communicates with the interior of the recycling bin. A control valve is fixedly installed on the drain pipe, and rubber sealing rings are provided between the drain pipe and the recycling bin, between the feed pipe and the sealing cover, and between the drain valve and the filter box.

[0012] In a preferred embodiment, frame-shaped rubber sealing strips are provided between the filter plate and the mounting frame, between the mounting frame and the filter box, and between the demulsifier and the filter box. The sealing performance of the entire device can be improved by setting the rubber sealing ring and the frame-shaped rubber sealing strip.

[0013] The technical effects and advantages of this utility model are as follows: 1. This utility model uses an inclined filter plate in the filter box to filter the styrene-butadiene latex polymerization waste liquid, effectively trapping suspended impurities and larger polymer particles. Then, with the help of the cavitation effect formed by the ultrasonic transducer in the demulsification tank, the demulsification rate of the waste liquid is greatly improved, promoting the efficient separation of the oil phase and the water phase, thereby improving the efficiency of subsequent waste liquid purification and reuse.

[0014] 2. Connect the mounting frame to the sealing cover using the connecting plate. After the sealing cover is removed from the top of the filter box, grasping the sealing cover will move the mounting frame and the demulsifier tank out of the filter box together, making it convenient for staff to clean and replace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the filter box of this utility model; Figure 3 This is a cross-sectional view of the demulsifier of this utility model; Figure 4 This is a cross-sectional view of the guide plate of this utility model; Figure 5 This is a schematic diagram showing the separation of the filter plate and the mounting frame of this utility model.

[0016] The attached diagram is labeled as follows: 1. Recycling bin; 2. Filter box; 3. Mounting frame; 4. Filter plate; 5. Demulsifier; 6. Ultrasonic transducer; 7. Solenoid valve; 8. Sealing cover; 9. Connecting plate; 10. Support plate; 11. Ultrasonic generator; 12. Guide plate; 13. Drain valve; 14. Feed pipe; 15. Drain pipe; 16. Control valve; 17. Rubber sealing ring; 18. Frame-shaped rubber sealing strip. Detailed Implementation

[0017] 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.

[0018] Refer to the instruction manual appendix Figures 1-5This utility model provides a styrene-butadiene latex polymerization waste liquid recycling device, including a recycling tank 1. A filter tank 2 is fixedly installed on the top of the recycling tank 1. An installation frame 3 is provided inside the filter tank 2. A filter plate 4 is fixedly installed inside the installation frame 3. Both the installation frame 3 and the filter plate 4 are set at an inclination. A demulsifying tank 5 is fixedly installed at the bottom of the installation frame 3. The bottom of the demulsifying tank 5 penetrates the filter tank 2 and extends into the interior of the recycling tank 1. An ultrasonic transducer 6 is provided inside the demulsifying tank 5. A solenoid valve 7 is connected to the bottom of the demulsifying tank 5. The solenoid valve 7 is an electromagnetically controlled industrial device and is a basic automated component used to control fluids. When the solenoid valve 7 is not energized, the valve core is in the position of closing or opening the valve due to the action of the spring, i.e., the de-energized state. When the coil is energized, the valve core is attracted by electromagnetic force, overcomes the action of the spring, and moves to another position, so that the valve is opened or closed.

[0019] A sealing cover 8 is fixedly provided on the top of the filter box 2. The bottom of the sealing cover 8 is connected to the top of the mounting frame 3 by two symmetrically distributed connecting plates 9. A feed pipe 14 passes through one side of the top of the sealing cover 8. The bottom of the feed pipe 14 is connected to the inside of the filter box 2. A drain pipe 15 passes through the bottom of the recovery box 1. The drain pipe 15 is connected to the inside of the recovery box 1. A control valve 16 is fixedly provided on the drain pipe 15. The control valve 16 is usually composed of two parts: an actuator and a valve body assembly. The control valve 16 adjusts the fluid parameters by changing the flow area between the valve core and the valve seat, so as to facilitate the control of the opening and closing of the drain pipe 15.

[0020] The demulsifying tank 5 is fixedly provided with a support plate 10. The top of the ultrasonic transducer 6 is fixed to the bottom of the support plate 10. An ultrasonic generator 11 is fixedly provided on the top of the support plate 10. A guide plate 12 is fixedly provided on the top of the support plate 10. The ultrasonic generator 11 is located inside the guide plate 12. The guide plate 12 plays a protective role on the top of the ultrasonic generator 11 to prevent waste liquid from contaminating the ultrasonic generator 11 and affecting its use.

[0021] The ultrasonic generator 11 converts mains power into ultrasonic frequency alternating current, providing suitable high-frequency electrical energy to the ultrasonic transducer 6. The ultrasonic transducer 6 is a device that can convert electrical energy into mechanical energy. When the ultrasonic generator 11 outputs high-frequency alternating current, the piezoelectric ceramic material in the ultrasonic transducer 6 will expand and contract under the action of the electric field. This deformation will cause the surrounding medium (such as air, liquid or solid) to vibrate, thereby generating ultrasonic waves.

[0022] When recycling styrene-butadiene latex polymerization waste liquid, the waste liquid is transported to the mounting frame 3 and filter plate 4 through the feed pipe 14. Primary filtration is completed by the inclined filter plate 4, which can effectively intercept suspended impurities and larger polymer particles. The filtered waste liquid flows into the demulsification tank 5. At this time, the solenoid valve 7 at the bottom of the demulsification tank 5 is in the closed state. The ultrasonic transducer 6 at the bottom of the support plate 10 inside the tank forms a cavitation effect in the waste liquid through high-frequency vibration, which breaks the emulsion system of the waste liquid and promotes the coagulation of oil phase particles, creating conditions for subsequent separation processes. After the demulsification process is completed, the solenoid valve 7 at the bottom of the demulsification tank 5 is opened, and the treated waste liquid is discharged into the recovery tank 1 for temporary storage. Subsequently, it can be connected to separation equipment such as centrifuges, distillation columns, and rectification columns through the drain pipe 15 at the bottom of the recovery tank 1 to achieve further purification and resource utilization of useful components in the waste liquid. This step is already a known technology and will not be described in detail here.

[0023] Refer to the instruction manual appendix Figure 1 and Figure 2 A drain valve 13 is installed through one side of the filter box 2. The drain valve 13 is usually composed of a valve body, valve cover, valve stem, valve core and other components. The drain valve 13 is evolved from a gate valve. It uses gear rotation to drive the valve stem to lift, realize the opening and closing of the valve core, and thus control the discharge of sewage. One end of the drain valve 13 passes through the filter box 2 and extends to the side of the inclined mounting frame 3. Opening the drain valve 13 allows impurities on the filter plate 4 to be discharged from the inside of the filter box 2, avoiding excessive impurities clogging the filter plate 4 and affecting the filtration efficiency.

[0024] Furthermore, rubber sealing rings 17 are provided between the drain pipe 15 and the recovery box 1, between the feed pipe 14 and the sealing cover 8, and between the drain valve 13 and the filter box 2. Frame-shaped rubber sealing strips 18 are provided between the filter plate 4 and the mounting frame 3, between the mounting frame 3 and the filter box 2, and between the demulsifier 5 and the filter box 2. The sealing performance of the entire device can be improved by setting the rubber sealing rings 17 and the frame-shaped rubber sealing strips 18.

[0025] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A styrene-butadiene latex polymerization waste liquid recycling device, comprising a recycling tank (1), characterized in that: The top of the recycling bin (1) is fixedly provided with a filter box (2), and the filter box (2) is provided with an installation frame (3), and the installation frame (3) is fixedly provided with a filter plate (4). The bottom of the mounting frame (3) is fixedly provided with a demulsifying tank (5). The bottom of the demulsifying tank (5) passes through the filter box (2) and extends into the inside of the recycling box (1). An ultrasonic transducer (6) is provided inside the demulsifying tank (5). A solenoid valve (7) is connected to the bottom of the demulsifying tank (5). The filter box (2) is fixedly provided with a sealing cover (8) at the top, and the bottom of the sealing cover (8) is connected to the top of the mounting frame (3) by two symmetrically distributed connecting plates (9).

2. The styrene-butadiene latex polymerization waste liquid recovery equipment according to claim 1, characterized in that: The demulsifier (5) is fixedly provided with a support plate (10), the top of the ultrasonic transducer (6) is fixed to the bottom of the support plate (10), and the top of the support plate (10) is fixedly provided with an ultrasonic generator (11).

3. The styrene-butadiene latex polymerization waste liquid recovery equipment according to claim 2, characterized in that: The top of the support plate (10) is fixedly provided with a guide plate (12), and the ultrasonic generator (11) is located inside the guide plate (12).

4. The styrene-butadiene latex polymerization waste liquid recovery equipment according to claim 1, characterized in that: The mounting frame (3) and the filter plate (4) are both set to be inclined. A drain valve (13) runs through one side of the filter box (2). One end of the drain valve (13) runs through the filter box (2) and extends to one side of the inclined mounting frame (3).

5. The styrene-butadiene latex polymerization waste liquid recovery equipment according to claim 4, characterized in that: The top side of the sealing cover (8) has a feed pipe (14) that runs through it, and the bottom of the feed pipe (14) is connected to the inside of the filter box (2).

6. The styrene-butadiene latex polymerization waste liquid recovery equipment according to claim 5, characterized in that: The bottom of the recycling box (1) is connected to the inside of the recycling box (1). A control valve (16) is fixed on the drainage pipe (15). Rubber sealing rings (17) are provided between the drainage pipe (15) and the recycling box (1), between the feed pipe (14) and the sealing cover (8), and between the drain valve (13) and the filter box (2).

7. The styrene-butadiene latex polymerization waste liquid recovery equipment according to claim 1, characterized in that: A frame-shaped rubber sealing strip (18) is provided between the filter plate (4) and the mounting frame (3), between the mounting frame (3) and the filter box (2), and between the demulsifier (5) and the filter box (2).

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