Bisphenol A catalyst preparation device

Abstract

The utility model relates to a bisphenol A catalyst preparation device. A spiral blade and stirring rods are arranged on a rotating shaft, and the multiple stirring rods are arranged in the circumferential direction of the rotating shaft at intervals and located on the outer side of the spiral blade; a plurality of strip-shaped protrusions are arranged in the tank body in the circumferential direction of the tank body at intervals, and heating wires are installed in the strip-shaped protrusions so as to heat the interior of the tank body. Phenol in the tank body is heated to be in a liquid state through the heating wire, then a basic catalyst and acetone are added into the tank body, the output end of the motor drives the rotating shaft, the spiral blade and the stirring rod to rotate, the spiral blade enables reaction substances to generate axial flow and laminar flow mixing, and the stirring rod enables the reaction substances to generate axial flow, radial flow and turbulent flow mixing. Meanwhile, the reaction substances impact the strip-shaped bulges, so that the reaction substances are mixed in various special forms, the mixing effect and efficiency are improved, and the influence on the preparation process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a bisphenol A catalyst preparation device. Background Technology

[0002] Bisphenol A (BPA) is one of the most widely used industrial compounds in the world, primarily used in the production of various polymer materials such as polycarbonate, epoxy resin, polysulfone resin, polyphenylene ether resin, and unsaturated polyester resin. Currently, BPA is generally obtained by the condensation of phenol and acetone in an acidic medium. The preparation process typically involves first pre-mixing phenol and acetone in a specific ratio, then adding a selected catalyst to the mixture and carrying out a condensation reaction under certain reaction conditions. The product is then neutralized, filtered, and purified by distillation or crystallization. Currently, a single-structure stirring blade is often used for pre-mixing phenol and acetone, resulting in poor mixing effect and efficiency, which affects the preparation process. Utility Model Content

[0003] The technical problem to be solved by this invention is that the current method of using a single-structure stirring blade to premix phenol and acetone results in poor mixing effect and efficiency, which affects the preparation process.

[0004] To address the aforementioned issues, this invention provides a bisphenol A catalyst preparation apparatus. The top of the tank is open and covered with a cover. A motor is mounted on the cover, and the motor's output end extends into the tank and is connected to a rotating shaft. The rotating shaft is equipped with helical blades and stirring rods. Multiple stirring rods are spaced apart along the circumference of the rotating shaft and located outside the helical blades. Multiple strip-shaped protrusions are spaced apart along the circumference of the tank, and heating wires are installed inside the strip-shaped protrusions to heat the interior of the tank.

[0005] The bisphenol A catalyst preparation apparatus provided by this utility model also has the following technical features:

[0006] The rotating shaft is connected to the stirring rod by a side support rod. The stirring rod is a spiral rod arranged vertically, and side support rods are provided at both the upper and lower ends of the stirring rod.

[0007] The side wall of the tank is provided with an installation protrusion that is connected to one end of a strip-shaped protrusion. A heating ring connected to a heating wire is provided inside the installation protrusion. The heating ring is connected to an external power source through an electric wire.

[0008] The strip-shaped protrusions are provided on the side wall and bottom wall of the tank.

[0009] The cover has a feed inlet, and the bottom of the tank has a discharge outlet.

[0010] The bottom of the tank is equipped with adjustable support legs.

[0011] This invention has the following advantages: phenol in the tank is heated to a liquid state by a heating wire, and then an alkaline catalyst and acetone are added to the tank. The output of the motor drives the rotating shaft, spiral blades, and stirring rod to rotate. The spiral blades cause the reactants to axial flow and laminar mixing, while the stirring rod causes the reactants to axial, radial flow, and turbulent mixing. At the same time, the reactants collide with the strip-shaped protrusions, thereby achieving various special forms of mixing of the reactants, improving the mixing effect and efficiency, and avoiding affecting the preparation process. Attached Figure Description

[0012] Figure 1 This is a partial cross-sectional view of the present invention;

[0013] Figure 2 for Figure 1 A schematic diagram of the stirring structure in the image;

[0014] Figure 3 for Figure 1 A schematic diagram of the structure of the central strip-shaped protrusion. Detailed Implementation

[0015] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0016] like Figures 1 to 3 As shown, the bisphenol A catalyst preparation device of this utility model has a tank 10 with an open top and a cover 11. A motor 12 is installed on the cover 11. The output end of the motor 12 extends into the tank 10 and is connected to a rotating shaft 13. The rotating shaft 13 is equipped with a spiral blade 14 and a stirring rod 15. Multiple stirring rods 15 are spaced apart along the circumference of the rotating shaft 13 and located outside the spiral blade 14. Multiple strip-shaped protrusions 16 are spaced apart along the circumference inside the tank 10. Heating wires are installed in the strip-shaped protrusions 16 to heat the inside of the tank 10.

[0017] The phenol in the tank 10 is heated to a liquid state by a heating wire. Then, an alkaline catalyst and acetone are added to the tank 10. The output of the motor 12 drives the rotating shaft 13, the spiral blade 14, and the stirring rod 15 to rotate. The spiral blade 14 causes the reactants to axial flow and laminar mixing, while the stirring rod 15 causes the reactants to axial, radial flow, and turbulent mixing. At the same time, the reactants impact the strip-shaped protrusions 16, thereby achieving various special forms of mixing of the reactants, improving the mixing effect and efficiency, and avoiding affecting the preparation process.

[0018] The alkaline catalyst can be sodium hydroxide or potassium hydroxide; the ratio of phenol to acetone is between 3:1 and 6:1; the melting point of phenol is 40.5 degrees Celsius. Before and during premixing, the heating temperature of the heating wire can be set to about 50 degrees Celsius to keep the phenol in a liquid state, which facilitates subsequent mixing and reaction, avoids premature and violent chemical reactions, and also promotes the uniform distribution of the catalyst.

[0019] The motor 12 is equipped with a corresponding reducer, power supply and controller to control the direction, speed and start / stop of the output.

[0020] The stirring rods 15 are provided in at least two, preferably three; the strip-shaped protrusions 16 are provided in at least four, preferably six. The strip-shaped protrusions 16 are made of metal to facilitate heat conduction.

[0021] Preferably, the rotating shaft 13 is connected to the stirring rod 15 by a side support rod 17. The stirring rod 15 is a spiral rod arranged vertically, and the upper and lower ends of the stirring rod 15 are respectively provided with side support rods 17.

[0022] The spiral stirring rod 15 can better generate axial and radial flow and turbulent mixing of reactants, thereby improving the mixing effect and efficiency.

[0023] The spiral direction of the stirring rod 15 is the same as or opposite to the spiral direction of the spiral blade 14.

[0024] Preferably, the side wall of the tank body 10 is provided with an installation protrusion 18 connected to one end of the strip-shaped protrusion 16, and a heating ring connected to the heating wire is provided inside the installation protrusion 18. The heating ring is connected to an external power source through an electric wire.

[0025] The heating wire and heating ring are equipped with corresponding external power supplies, controllers, and other components. The external power supply and wires supply power to the heating ring and heating wire, and the controller controls the heating temperature and start / stop time. The shape of the heating wire corresponds to the shape of the strip-shaped protrusion 16, and the shape of the heating ring corresponds to the shape of the mounting protrusion 18.

[0026] Preferably, the strip-shaped protrusions 16 are provided on the side wall and bottom wall of the tank body 10.

[0027] Preferably, the cover 11 is provided with a feed inlet 19, and the bottom of the tank 10 is provided with a discharge outlet 20.

[0028] Both the inlet 19 and the outlet 20 are connected to external pipes or containers via flanges, sealing components, and bolts.

[0029] Preferably, the bottom of the tank 10 is provided with a plurality of adjustable legs 21 to facilitate adjusting the height of the tank 10 and keeping it level.

[0030] The working principle of this utility model is as follows:

[0031] A certain amount of phenol is added into the tank 10 through the feed port 19. The phenol is heated to a liquid state by the heating wire in the strip-shaped protrusion 16. Then, the corresponding amount of alkaline catalyst and acetone are added into the tank 10. The motor 12 is started, and the output end of the motor 12 drives the rotating shaft 13, the spiral blade 14, and the stirring rod 15 to rotate. The spiral blade 14 causes the reactants to generate axial flow and laminar mixing, and the stirring rod 15 causes the reactants to generate axial, radial flow, and turbulent mixing. At the same time, the reactants collide with the strip-shaped protrusion 16, thereby achieving various special forms of mixing of the reactants, improving the mixing effect and efficiency, and avoiding affecting the preparation process. The premixed reactants are discharged from the discharge port 20.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bisphenol A catalyst preparation apparatus, characterized in that, The top of the tank (10) is open and has a cover (11). A motor (12) is provided on the cover (11). The output end of the motor (12) extends into the tank (10) and is connected to a rotating shaft (13). The rotating shaft (13) is provided with a spiral blade (14) and a stirring rod (15). Multiple stirring rods (15) are spaced apart along the circumference of the rotating shaft (13) and located outside the spiral blade (14). Multiple strip-shaped protrusions (16) are spaced apart along the circumference inside the tank (10). Heating wires are installed in the strip-shaped protrusions (16) to heat the inside of the tank (10).

2. The bisphenol A catalyst preparation apparatus according to claim 1, characterized in that, The rotating shaft (13) is connected to the stirring rod (15) by a side support rod (17). The stirring rod (15) is a spiral rod arranged vertically, and the upper and lower ends of the stirring rod (15) are respectively provided with side support rods (17).

3. The bisphenol A catalyst preparation apparatus according to claim 1, characterized in that, The side wall of the tank (10) is provided with an installation protrusion (18) that is connected to one end of a strip protrusion (16). The installation protrusion (18) is provided with a heating ring that is connected to a heating wire. The heating ring is connected to an external power source through an electric wire.

4. The bisphenol A catalyst preparation apparatus according to claim 1, characterized in that, The strip-shaped protrusions (16) are provided on the side wall and bottom wall of the tank body (10).

5. The bisphenol A catalyst preparation apparatus according to claim 1, characterized in that, The cover (11) is provided with a feed inlet (19) and the tank (10) is provided with a discharge outlet (20) at the bottom.

6. The bisphenol A catalyst preparation apparatus according to claim 1, characterized in that, The bottom of the tank (10) is provided with adjustable support legs (21).

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