ABS (acrylonitrile butadiene styrene) heat-resistant agent production equipment with solvent recovery function

Abstract

The utility model relates to the technical field of ABS (Acrylonitrile Butadiene Styrene) heat-resistant agent production, in particular to ABS heat-resistant agent production equipment with a solvent recovery function. Comprising a reaction kettle tank body, a devolatilization crushing kettle and a double-screw extruder, a feeding pipe communicated with the reaction kettle tank body is arranged on the reaction kettle tank body, a discharging opening of the reaction kettle tank body is communicated with a feeding opening of the devolatilization crushing kettle through a first discharging pipe, and an outlet of the devolatilization crushing kettle is communicated with an inlet of the double-screw extruder through a second discharging pipe; the system further comprises a first condenser, an inlet of the first condenser is communicated with the devolatilization smashing kettle through a first condensation pipe, an outlet of the first condenser is communicated with an inlet of the solvent collecting tank through a second condensation pipe, and an outlet of the solvent collecting tank is communicated with the output end of the vacuum pump. According to the solvent recovery device, the first condenser, the solvent collecting tank and the vacuum pump are arranged, the vacuum pump provides suction force to suck the gasified solvent in the crushing stirrer into the first condenser for condensation, and the condensed solvent enters the solvent collecting tank to realize recovery of the solvent.

Description

Technical Field

[0001] The utility model relates to the technical field of ABS heat-resistant agent production, in particular to ABS heat-resistant agent production equipment with a solvent recovery function. Background Art

[0002] ABS plastic is a ternary copolymer of acrylonitrile (A), butadiene (B), and styrene (S). The relative content of the three monomers can be changed arbitrarily to make various resins. ABS has the common properties of the three components. A makes it resistant to chemical corrosion and heat, and has a certain surface hardness, B makes it highly elastic and tough, and S makes it have the processing and molding characteristics of thermoplastics and improves electrical properties. Therefore, ABS plastic is a "tough, hard, and rigid" material with easy-to-obtain raw materials, good comprehensive properties, low price, and a wide range of uses. ABS plastic has been widely used in manufacturing industries such as machinery, electrical, textile, automobile, aircraft, and shipbuilding, as well as chemical industry.

[0003] Chinese utility model CN212919977U discloses a production device for high thermal stability ABS heat resistant agent, including a preparation tank, a stirring frame fixedly installed inside the preparation tank, the stirring frame is fixedly connected to a rotating motor installed on the outer wall of the lower end of the preparation tank, heating boxes are welded and installed on the outer walls at both ends of the preparation tank, a heater is fixedly installed inside the heating box, a spray plate is installed on the upper end of the preparation tank, a solvent delivery pipe is connected and installed on the upper end of the spray plate, a solvent regulator is installed through the solvent delivery pipe, and a solvent delivery pump is connected and installed on the front end of the solvent delivery pipe.

[0004] The above patent can complete the preparation of ABS heat-resistant agent, but after the preparation is completed, the remaining liquid contains a large amount of organic solvent. If the remaining liquid is directly discarded, a large amount of solvent will be wasted, which not only increases production costs but also pollutes the environment. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an ABS heat-resistant agent production device with a solvent recovery function, which is used for recovering the solvent after the synthesis of the ABS heat-resistant agent is completed, thereby avoiding waste of resources.

[0006] The utility model solves the technical problem by adopting a technical solution to provide ABS heat resistant agent production equipment with a solvent recovery function, comprising a reactor tank body, a devolatilizing pulverizing kettle and a twin-screw extruder, wherein a stirring device is arranged in the reactor tank body, a first heating device is arranged on the reactor tank body, a feeding pipe connected with the inner cavity of the reactor tank body is arranged on the reactor tank body, a discharge port of the reactor tank body is connected with a feed port of the devolatilizing pulverizing kettle through the first discharge pipe, a pulverizing stirrer is arranged in the devolatilizing pulverizing kettle, a second heating device is arranged on the devolatilizing pulverizing kettle, an outlet of the devolatilizing pulverizing kettle is connected with an inlet of the twin-screw extruder through a second discharge pipe; the utility model also comprises a first condenser, a solvent collecting tank and a vacuum pump, wherein the inlet of the first condenser is connected with the inner cavity of the devolatilizing pulverizing kettle through a first condensing pipe, the outlet of the first condenser is connected with the inlet of the solvent collecting tank through a second condensing pipe, and the outlet of the solvent collecting tank is connected with the output end of the vacuum pump.

[0007] Furthermore, a buffer tank is included, the outlet of the solvent collecting tank is connected to the inlet of the buffer tank, and the outlet of the buffer tank is connected to the output end of the vacuum pump.

[0008] Furthermore, it also includes a second condenser and a monomer collection tank, the inlet of the second condenser is connected to the inner cavity of the devolatilization and crushing kettle through a third condenser pipe, the outlet of the second condenser is connected to the inlet of the monomer collection tank through a fourth condenser pipe, and the outlet of the monomer collection tank is connected to the inlet of the buffer tank.

[0009] Furthermore, the devolatilization and pulverization kettle is provided with two vacuum interfaces, and the first condenser and the third condenser are respectively connected to one of the vacuum interfaces.

[0010] Furthermore, valves are provided on the first condenser and the third condenser.

[0011] Furthermore, an evaporation tube is provided on the reactor tank body, one end of the evaporation tube is connected to the inner cavity of the reactor tank body, and the other end of the evaporation tube is connected to the inlet of the first condenser tube.

[0012] Furthermore, the first heating device and the second heating device are both thermal oil jackets.

[0013] Furthermore, the feed pipe, the first discharge pipe and the second discharge pipe are all provided with solenoid valves.

[0014] Furthermore, a cooling water tank is provided at the outlet of the twin-screw extruder.

[0015] The beneficial effect of the utility model is that by arranging the first condenser, the solvent collecting tank and the vacuum pump, the vacuum pump provides suction to suck the vaporized solvent in the pulverizing agitator into the first condenser for condensation, and the condensed solvent enters the solvent collecting tank to realize solvent recovery, thereby reducing energy consumption and pollution emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure markings: 1-reactor body; 2-devolatilization crushing kettle; 3-twin-screw extruder; 4-stirring device; 5-first heating device; 6-feeding pipe; 7-first discharge pipe; 8-crushing agitator; 9-second heating device; 10-second discharge pipe; 11-first condenser; 12-solvent collecting tank; 13-vacuum pump; 14-first condensing pipe; 15-second condensing pipe; 16-buffer tank; 17-second condensing pipe; 18-monomer collecting tank; 19-third condensing pipe; 20-fourth condensing pipe; 21-vacuum interface; 22-valve; 23-evaporating pipe; 24-solenoid valve; 25-cooling water tank. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] like Figure 1 As shown, the utility model has a solvent recovery function ABS heat resistant agent production equipment, including a reactor tank body 1, a devolatilization crushing kettle 2 and a twin-screw extruder 3, the reactor tank body 1 is provided with a stirring device 4, the reactor tank body 1 is provided with a first heating device 5, the reactor tank body 1 is provided with a feed pipe 6 connected with the inner cavity of the reactor tank body 1, the discharge port of the reactor tank body 1 is connected with the feed port of the devolatilization crushing kettle 2 through a first discharge pipe 7, the devolatilization crushing kettle 2 is provided with a crushing stirrer 8, The devolatilization pulverizing kettle 2 is provided with a second heating device 9, and the outlet of the devolatilization pulverizing kettle 2 is connected to the inlet of the twin-screw extruder 3 through a second discharge pipe 10; it also includes a first condenser 11, a solvent collecting tank 12 and a vacuum pump 13, the inlet of the first condenser 11 is connected to the inner cavity of the devolatilization pulverizing kettle 2 through a first condensation pipe 14, the outlet of the first condenser 11 is connected to the inlet of the solvent collecting tank 12 through a second condensation pipe 15, and the outlet of the solvent collecting tank 12 is connected to the output end of the vacuum pump 13.

[0020] Among them, the reactor tank body 1 is arranged vertically, the feed pipe 6 is used to transport the raw materials into the reactor tank body 1, the stirring device 4 is used to stir the raw materials to accelerate the polymerization reaction, the stirring device 4 includes stirring blades, a stirring shaft and a driving motor, the stirring blades are arranged inside the reactor tank body 1, the driving motor is arranged above the reactor tank body 1, the stirring shaft and the reactor tank body 1 are coaxially arranged, the output end of the driving motor is fixedly connected to the stirring blade through the stirring shaft to realize the rotation of the stirring blade, and the first heating device 5 can use an electric heating wire to heat the raw materials in the reactor tank body 1 to accelerate the polymerization reaction of the raw materials. The discharge port of the reactor tank body 1 is arranged at the bottom of the reactor tank body 1. After the polymerization reaction of the raw materials is completed, the ABS heat-resistant agent solution enters the devolatilization crushing kettle 2 through the first discharge pipe 7. The devolatilization crushing kettle 2 is arranged horizontally, and the feed port of the devolatilization crushing kettle 2 is arranged at the top of the devolatilization crushing kettle 2; the second heating device 9 can also use an electric heating wire to heat the ABS heat-resistant agent solution in the devolatilization crushing kettle 2. After the ABS heat-resistant agent solution is heated, the solvent will be vaporized. The solvent used for the preparation of the ABS heat-resistant agent is one of N, N-dimethylformamide, N, N-dimethylformamide, N-methylpyrrolidone, 1,4-dioxane, and butanone. The vacuum pump 13 will generate negative pressure. Under the action of the vacuum pump 13, the vaporized solvent will enter the first condenser 11 through the first condenser pipe 14 for condensation. After the condensation is completed, the solvent enters the solvent collection tank 12 for collection. The inlet and outlet of the solvent collection tank 12 are both located at the top of the solvent collection tank 12. After the solvent is collected, the devolatilization crushing kettle 2 is continued to be heated until the ABS heat-resistant agent is precipitated. The crushing agitator 8 includes a crushing blade, a crushing shaft and a crushing motor. The crushing blade is arranged inside the devolatilization crushing kettle 2, and the crushing motor is arranged outside the devolatilization crushing kettle 2. The crushing shaft is coaxial with the devolatilization crushing kettle 2. The output end of the crushing motor is fixedly connected to the crushing blade through the crushing shaft to realize the rotation of the crushing blade, thereby realizing the crushing of the ABS heat-resistant agent into particles. The discharge port of the devolatilization crushing kettle 2 is located at the bottom of the devolatilization crushing kettle 2. After the crushing is completed, the ABS heat-resistant agent particles enter the twin-screw extruder 3, and the twin-screw extruder 3 further devolatilizes and extrude to obtain the ABS heat-resistant agent product.

[0021] Since the vacuum pump 13 provides negative pressure, it is possible that when the solvent enters the solvent collection tank 12, the solvent is sucked into the vacuum pump 13. Figure 1 , further comprising a buffer tank 16, the outlet of the solvent collecting tank 12 is communicated with the inlet of the buffer tank 16, and the outlet of the buffer tank 16 is communicated with the output end of the vacuum pump 13. The inlet and outlet of the buffer tank 16 are both located at the top of the buffer tank 16.

[0022] After the solvent is collected, there may be residual styrene or maleic anhydride monomer in the solution. The boiling point of the monomer is higher than that of the solvent. For further information, see Figure 1 , further comprising a second condenser 17 and a monomer collection tank 18, the inlet of the second condenser 17 being connected to the inner cavity of the devolatilization crushing kettle 2 through the third condenser pipe 19, the outlet of the second condenser 17 being connected to the inlet of the monomer collection tank 18 through the fourth condenser pipe 20, the outlet of the monomer collection tank 18 being connected to the inlet of the buffer tank 16, and valves 22 being provided on both the first condenser pipe 14 and the third condenser pipe 19. After the solvent recovery is completed, the valve 22 of the first condenser pipe 14 is closed, the valve 22 of the third condenser pipe 19 is opened, the ABS heat resistant agent solution is continuously heated, the vacuum pump 13 generates negative pressure, under the action of the vacuum pump 13, the vaporized monomer is passed through the third condenser pipe 19 into the second condenser 17 for condensation, the condensed monomer is collected in the monomer collection tank 18, the inlet and outlet of the monomer collection tank 18 are both located at the top of the monomer collection tank 18.

[0023] To improve the stability of the connection, see Figure 1 The devolatilization and pulverization kettle 2 is provided with two vacuum interfaces 21 , and the first condenser tube 14 and the third condenser tube 19 are respectively connected to one of the vacuum interfaces 21 .

[0024] When the raw materials are stirred in the reactor tank 1, the solvent will evaporate. In order to collect the volatile solvent, further see Figure 1 The reactor tank body 1 is provided with an evaporation tube 23 , one end of the evaporation tube 23 is connected to the inner cavity of the reactor tank body 1 , and the other end is connected to the inlet of the first condenser tube 14 .

[0025] In the above embodiment, the first heating device 5 and the second heating device 9 are both electric heating wires. In order to prevent the electric heating wires from directly heating the reactor tank 1 and the devolatilization crushing kettle 2, further, see Figure 1 The first heating device 5 and the second heating device 9 are both thermal oil jackets. The thermal oil is used as a medium to heat the reactor tank body 1 and the devolatilization crushing kettle 2, thereby ensuring the service life of the reactor tank body 1 and the devolatilization crushing kettle 2.

[0026] In order to better control the feeding speed and discharging speed, see Figure 1 The feed pipe 6 , the first discharge pipe 7 and the second discharge pipe 10 are all provided with a solenoid valve 24 .

[0027] In order to reduce the preparation time, further see Figure 1 A cooling water tank 25 is provided at the outlet of the twin-screw extruder 3. The cooling water tank 25 is used to cool the ABS heat-resistant agent output by the twin-screw extruder 3, and after cooling, the ABS heat-resistant agent is collected, dried, crushed, and packaged.

[0028] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An ABS heat-resistant agent production equipment with a solvent recovery function, comprising a reaction kettle tank (1), a devolatilization crushing kettle (2) and a twin-screw extruder (3), characterized in that: The reactor tank body (1) is provided with a stirring device (4), the reactor tank body (1) is provided with a first heating device (5), the reactor tank body (1) is provided with a feeding pipe (6) connected to the inner cavity of the reactor tank body (1), the discharge port of the reactor tank body (1) is connected to the feed port of the devolatilization pulverization kettle (2) through the first discharge pipe (7), the devolatilization pulverization kettle (2) is provided with a pulverizing stirrer (8), the devolatilization pulverization kettle (2) is provided with a second heating device (9), the devolatilization pulverization kettle (2) is provided with a stirring device (4), the devolatilization pulverization kettle (2) is provided with a stirring device (5), the devolatilization pulverization kettle (2) is provided with a second heating device (9), the devolatilization pulverization kettle (2) is provided with a stirring device (6), the devolatilization pulverization kettle (2) is provided with a stirring device (8), the devolatilization pulverization kettle (2) is provided with a stirring device (9), the devolatilization pulverization kettle (2) is provided with a stirring device (4), the devolatilization pulverization kettle (2) is provided with a stirring device (5), the devolatilization pulverization kettle (2) is provided with a stirring device (5), the devolatilization pulverization kettle (2) is provided with a stirring device (5), the devolatilization pulverization kettle (2) is provided with a stirring device (6), the devolatilization pulverization kettle (2) is provided with a stirring device (5 ... The outlet of the twin-screw extruder (2) is connected to the inlet of the twin-screw extruder (3) through a second discharge pipe (10); it also includes a first condenser (11), a solvent collecting tank (12) and a vacuum pump (13), the inlet of the first condenser (11) is connected to the inner cavity of the devolatilization crushing kettle (2) through a first condensation pipe (14), the outlet of the first condenser (11) is connected to the inlet of the solvent collecting tank (12) through a second condensation pipe (15), and the outlet of the solvent collecting tank (12) is connected to the output end of the vacuum pump (13).

2. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 1, characterized in that: It also comprises a buffer tank (16), the outlet of the solvent collecting tank (12) is connected to the inlet of the buffer tank (16), and the outlet of the buffer tank (16) is connected to the output end of the vacuum pump (13).

3. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 2, characterized in that: It also includes a second condenser (17) and a monomer collection tank (18), wherein the inlet of the second condenser (17) is connected to the inner cavity of the devolatilization crushing kettle (2) through a third condenser pipe (19), and the outlet of the second condenser (17) is connected to the inlet of the monomer collection tank (18) through a fourth condenser pipe (20), and the outlet of the monomer collection tank (18) is connected to the inlet of the buffer tank (16).

4. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 3, characterized in that: The devolatilization and pulverization kettle (2) is provided with two vacuum interfaces (21), and the first condensation pipe (14) and the third condensation pipe (19) are respectively connected to one of the vacuum interfaces (21).

5. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 3, characterized in that: The first condenser tube (14) and the third condenser tube (19) are both provided with valves (22).

6. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 1, characterized in that: The reactor tank body (1) is provided with an evaporation tube (23), one end of the evaporation tube (23) is connected to the inner cavity of the reactor tank body (1), and the other end is connected to the inlet of the first condenser tube (14).

7. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 1, characterized in that: The first heating device (5) and the second heating device (9) are both heat-conducting oil jackets.

8. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 1, characterized in that: The feed pipe (6), the first discharge pipe (7) and the second discharge pipe (10) are all provided with solenoid valves (24).

9. The ABS heat-resistant agent production equipment with solvent recovery function as claimed in claim 1, characterized in that: A cooling water tank (25) is provided at the outlet of the twin-screw extruder (3).

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