Catalyst feeding mechanism for petroleum resin production

Abstract

The utility model discloses a catalyst adding mechanism for petroleum resin production, including the loss -in -weight feeder, the loss -in -weight feeder sets up the reaction kettle top, be provided with the closed adding assembly on the reaction kettle top cover, the closed adding assembly top is connected with the discharge port of loss -in -weight feeder through the continuous feeding component, the utility model relates to petroleum resin production technical field, set up this mechanism between the loss -in -weight feeder discharge port and the catalyst adding mouth on the reaction kettle top cover, utilize continuous feeding component and send the A1Cl3 catalyst after weighing of loss -in -weight feeder into the closed adding assembly, utilize the cooperation of pivot and baffle, realize the continuous interval type adding of A1Cl3 catalyst, and add the pneumatic purging component to pneumatic purging of adding operation area simultaneously, can effectively guarantee the adding operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of petroleum resin production technology, specifically to a catalyst dosing mechanism for petroleum resin production. Background Technology

[0002] Currently, the polymerization of C5 petroleum resin mainly includes two production processes: thermal polymerization and catalytic polymerization. When using catalytic polymerization to produce petroleum resin, AlCl3 is usually used as a catalyst to catalyze the polymerization of cationic resins. The catalyst is then removed by washing with water, and finally, flash evaporation is performed to remove unreacted monomers and solvents. Currently, most petroleum resin manufacturers typically add the AlCl3 catalyst directly to the reactor from the top. However, due to the strong corrosiveness and hygroscopic properties of AlCl3, the catalyst is prone to deliquescence and agglomeration within the addition equipment during the addition process, which can easily cause corrosion. Therefore, this case study was developed to address these issues. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a catalyst dosing mechanism for petroleum resin production, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a catalyst addition mechanism for petroleum resin production, including a loss-in-weight feeder, wherein the loss-in-weight feeder is disposed above a reactor, and a sealed addition component is disposed on the top cover of the reactor, wherein the sealed addition component is connected to the outlet of the loss-in-weight feeder through a continuous feeding component.

[0005] The sealed dosing assembly includes a horizontally arranged cylindrical silo with a feeding port at its lower end. The feeding port is connected to the top cover of the reactor via a feeding channel. The upper part of the cylindrical silo is connected to a continuous feeding assembly. A rotating shaft is installed inside the cylindrical silo, and baffles are arranged in a circular array along the rotating shaft. Rubber sealing strips are provided along the ends of the baffles and are in contact with the inner wall of the cylindrical silo. A drive control assembly is connected to the exposed end of the rotating shaft. A pneumatic purging assembly is installed on the side of the cylindrical silo above the feeding port.

[0006] The aforementioned drive control components include a servo motor, a reducer, and a coupling. The input end of the reducer is connected to the drive end of the servo motor, and one end of the coupling is connected to the output end of the reducer, while the other end is connected to the rotating shaft.

[0007] The aforementioned pneumatic purging assembly includes a high-pressure nitrogen pipeline, a tee connector, and purging pipes. One end of the high-pressure nitrogen pipeline is connected to a high-pressure nitrogen source, the tee connector is located at the other end of the high-pressure nitrogen pipeline, and the purging pipes are connected to the outlet end of the tee connector and communicate with the side wall of the cylindrical silo.

[0008] The aforementioned purge pipe is equipped with a pulse solenoid valve.

[0009] The aforementioned continuous feeding assembly includes a feeding pipe, the lower end of which is connected to the upper surface of the cylindrical silo, the side wall of which is connected to the discharge port of the loss-in-weight feeder, and a threaded feeding rod is provided inside the feeding pipe, the upper end of which extends above the feeding pipe and is connected to the drive component.

[0010] The aforementioned driving component includes a mounting base and a rotary motor. The mounting base is located at the upper opening of the feed pipe, and the rotary motor is mounted on the mounting base. The output end of the rotary motor is connected to the threaded feed rod via a connecting shaft.

[0011] This invention provides a catalyst dosing mechanism for petroleum resin production. It offers the following advantages: The catalyst dosing mechanism for petroleum resin production uses an existing loss-in-weight feeder as its main body. This mechanism is installed between the discharge port of the loss-in-weight feeder and the catalyst dosing port on the top cover of the reactor. A continuous feeding assembly delivers the AlCl3 catalyst, weighed by the loss-in-weight feeder, into the sealed dosing assembly. The cooperation of a rotating shaft and a baffle plate enables continuous, intermittent dosing of the AlCl3 catalyst. Simultaneously, a pneumatic purging assembly pneumatically purifies the dosing area, effectively ensuring dosing efficiency and preventing AlCl3 catalyst residue on the baffle plate. The intermittent, continuous dosing prevents moisture from the reactor from entering the dosing mechanism, thus effectively preventing AlCl3 catalyst deliquescence and agglomeration within the dosing mechanism and improving the reliability of the dosing equipment. Attached Figure Description

[0012] Figure 1 This is a front cross-sectional view of the catalyst dosing mechanism for petroleum resin production described in this utility model.

[0013] Figure 2 This utility model Figure 1 A partially enlarged structural diagram.

[0014] Figure 3 This is an isometric structural diagram of the sealed dosing component of this utility model.

[0015] Figure 4 This is a three-dimensional structural diagram of the position of the rotating shaft and the baffle plate described in this utility model.

[0016] In the diagram: 1. Loss-in-weight feeder; 2. Reactor; 3. Cylindrical silo; 4. Feed chute; 5. Rotary shaft; 6. Baffle plate; 7. Rubber sealing strip; 8. Servo motor; 9. Reducer; 10. Coupling; 11. High-pressure nitrogen pipeline; 12. T-joint; 13. Purge pipe; 14. Pulse solenoid valve; 15. Feed pipe; 16. Threaded feed rod; 17. Mounting base; 18. Rotary motor; 19. Connecting shaft. 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] Example: Refer to the appendix of the instruction manual Figures 1-4 It is understood that this application specifically designs a catalyst feeding mechanism for petroleum resin production. A loss-in-weight feeder 1 is positioned above a reactor 2. A sealed feeding assembly is installed on the top cover of the reactor 2. The sealed feeding assembly is connected to the outlet of the loss-in-weight feeder 1 via a continuous feeding assembly. The sealed feeding assembly includes a horizontally positioned cylindrical silo 3 with a feeding port at its lower end. The feeding port is connected to the top cover of the reactor 2 via a feeding channel 4. The upper part of the cylindrical silo 3 is connected to the continuous feeding assembly. A rotating shaft 5 is installed inside the cylindrical silo 3. Baffle plates 6 are arranged in a circular array along the rotating shaft 5. Rubber sealing strips 7 are installed along the ends of the baffle plates 6, adhering to the inner wall of the cylindrical silo 3. A drive control assembly is connected to the exposed end of the rotating shaft 5. A pneumatic purging assembly is installed on the side of the cylindrical silo 3 above the feeding port. The design is based on the existing loss-in-weight feeder 1. This mechanism is installed between the discharge port and the catalyst addition port on the top cover of the reactor 2. The AlCl3 catalyst weighed by the loss-in-weight feeder 1 is fed into the sealed addition component using a continuous feeding assembly. The continuous intermittent addition of AlCl3 catalyst is achieved by the cooperation of the rotating shaft 5 and the baffle plate 6. At the same time, the pneumatic purging assembly is used to pneumatically purge the addition operation area, which can effectively ensure the efficiency of the addition operation and prevent AlCl3 catalyst residue on the baffle plate 6. The intermittent continuous feeding can prevent moisture in the reactor 2 from entering the addition mechanism, thereby effectively preventing AlCl3 catalyst from deliquescing and agglomerating in the addition mechanism and improving the reliability of the addition equipment. It should be noted that the specific structure of the loss-in-weight feeder 1 can be found in the YB-DSZ single screw loss-in-weight scale produced and sold by Jiangsu Yuanbang Industrial Technology Co., Ltd. Its structure and working principle will not be disclosed separately in the instruction manual.

[0019] In a preferred embodiment, the drive control assembly includes a servo motor 8, a reducer 9, and a coupling 10. The input end of the reducer 9 is connected to the drive end of the servo motor 8, and one end of the coupling 10 is connected to the output end of the reducer 9, while the other end is connected to the rotating shaft 5. The pneumatic purging assembly includes a high-pressure nitrogen pipeline 11, a tee connector 12, and a purging pipe 13. One end of the high-pressure nitrogen pipeline 11 is connected to a high-pressure nitrogen source, the tee connector 12 is located at the other end of the high-pressure nitrogen pipeline 11, and the purging pipe 13 is connected to the outlet end of the tee connector 12 and communicates with the side wall of the cylindrical silo 3. A pulse solenoid valve 14 is installed on the sweeping pipe 13; the aforementioned continuous feeding assembly includes a feeding pipe 15, the lower end of which is connected to the upper end face of the cylindrical silo 3, and the side wall of the feeding pipe 15 is connected to the discharge port of the loss-in-weight feeder 1. A threaded feeding rod 16 is installed inside the feeding pipe 15, and the upper end of the threaded feeding rod 16 extends above the feeding pipe 15 and is connected to the driving component. The driving component includes a mounting base 17 and a rotary motor 18. The mounting base 17 is located at the opening at the upper end of the feeding pipe 15, and the rotary motor 18 is mounted on the mounting base 17. The output end of the rotary motor 18 is connected to the threaded feeding rod 16 through a connecting shaft 19, so that... The AlCl3 catalyst is continuously and quantitatively added into the feed pipe 15 via a loss-in-weight feeder 1. A rotary motor 18, in conjunction with a connecting shaft 19, controls the rotation of the threaded feed rod 16, which then feeds the AlCl3 catalyst into the lower cylindrical silo 3, effectively preventing catalyst accumulation in the feed pipe 15. A servo motor 8, in conjunction with a reducer 9, controls the rotation of the rotating shaft 5, causing the shaft 5 and the baffle plate 6 to rotate within the cylindrical silo 3, thus continuously adding the AlCl3 catalyst intermittently into the reactor 2. During the addition process, the baffle plate... The rubber sealing strip 7 on the outside of the material plate 6 is in close contact with the inner wall of the cylindrical silo 3, which can effectively prevent water vapor in the reactor 2 from rising and entering the dosing mechanism. In addition, during the dosing process, the nitrogen delivered by the high-pressure nitrogen pipeline 11 is pulse-controlled by the pulse solenoid valve 14 on the purge pipe 13. The nitrogen is used to purge the material plate 6 and the inner wall of the cylindrical silo 3, preventing AlCl3 catalyst from adhering to the material plate 6 and improving the stability of the dosing operation. At the same time, after the high-pressure nitrogen is purged at the contact position between the feeding channel 4 and the cylindrical silo 3, it is blown downwards into the reactor 2 below the feeding channel 4, which can further block the upward movement of water vapor in the reactor 2.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catalyst feeding mechanism for petroleum resin production, comprising a loss-in-weight feeder, characterized in that, The loss-in-weight feeder is installed above the reactor. A sealed feeding assembly is installed on the top cover of the reactor. The sealed feeding assembly is connected to the outlet of the loss-in-weight feeder through a continuous feeding assembly. The sealed dosing assembly includes a horizontally arranged cylindrical silo with a feeding port at its lower end. The feeding port is connected to the top cover of the reactor via a feeding channel. The upper part of the cylindrical silo is connected to a continuous feeding assembly. A rotating shaft is installed inside the cylindrical silo, and baffles are arranged in a circular array along the rotating shaft. Rubber sealing strips are provided along the ends of the baffles and are in contact with the inner wall of the cylindrical silo. A drive control assembly is connected to the exposed end of the rotating shaft. A pneumatic purging assembly is installed on the side of the cylindrical silo above the feeding port.

2. The catalyst dosing mechanism for petroleum resin production according to claim 1, characterized in that, The drive control component includes a servo motor, a reducer, and a coupling. The input end of the reducer is connected to the drive end of the servo motor, and one end of the coupling is connected to the output end of the reducer, while the other end is connected to the rotating shaft.

3. The catalyst dosing mechanism for petroleum resin production according to claim 1, characterized in that, The pneumatic purging assembly includes a high-pressure nitrogen pipeline, a T-joint, and purging pipes. One end of the high-pressure nitrogen pipeline is connected to a high-pressure nitrogen source, the T-joint is located at the other end of the high-pressure nitrogen pipeline, and the purging pipes are connected to the outlet end of the T-joint and communicate with the side wall of the cylindrical silo.

4. The catalyst dosing mechanism for petroleum resin production according to claim 3, characterized in that, The purge pipe is equipped with a pulse solenoid valve.

5. The catalyst dosing mechanism for petroleum resin production according to claim 1, characterized in that, The continuous feeding assembly includes a feeding pipe, the lower end of which is connected to the upper surface of the cylindrical silo, the side wall of which is connected to the discharge port of the loss-in-weight feeder, and a threaded feeding rod is provided inside the feeding pipe, the upper end of which extends above the feeding pipe and is connected to the drive component.

6. The catalyst dosing mechanism for petroleum resin production according to claim 5, characterized in that, The driving component includes a mounting base and a rotary motor. The mounting base is located at the upper opening of the feed pipe, and the rotary motor is mounted on the mounting base. The output end of the rotary motor is connected to the threaded feed rod via a connecting shaft.

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