A vacuum reactor for the recovery of tributyltin chloride

Abstract

This utility model discloses a vacuum reactor for the recovery of tributyltin chloride, relating to the field of vacuum reactor technology. It includes a reactor body, a drive motor fixedly mounted on the top of the reactor body, a stirring module at the output end of the drive motor, and an inert gas pressure balancing assembly on the outside of the reactor body. Specifically, in the sampling or operation process, the coordinated control of a first three-way solenoid valve and a second three-way solenoid valve, along with the suction of a negative pressure pump and the replenishment of an inert gas compression tank, allows for the simultaneous replenishment of inert gas into the reactor while removing excess gas or taking samples. This ensures that a slightly positive pressure inert environment is maintained inside the reactor, thus preventing material contamination during sampling and ensuring the purity of the recovered material.

Description

Technical Field

[0001] This utility model relates to the field of vacuum reactor technology, and in particular to a vacuum reactor for the recovery of tributyltin chloride. Background Technology

[0002] The recovery of tributyltin chloride requires a reaction vessel. During the recovery reaction, samples need to be taken from inside the reaction vessel to ensure the recovery effect of tributyltin chloride.

[0003] Existing reactor sampling devices are prone to allowing outside air to enter, which can contaminate the materials inside the reactor. They are not very practical and cannot meet people's needs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a vacuum reactor for the recovery of tributyltin chloride, so as to solve the problem that the sampling device of the reactor in the prior art is prone to allowing outside air to enter, resulting in the contamination of the material inside the reactor, which is not practical and cannot meet people's needs.

[0005] In view of this, the present invention provides a vacuum reactor for the recovery of tributyltin chloride, including a reactor body, wherein the top and bottom of the reactor body are respectively provided with a feed port and a discharge port, a drive motor is fixedly installed on the top of the reactor body, a stirring module is provided at the output end of the drive motor, and an inert gas pressure balancing component is provided on the outside of the reactor body.

[0006] The inert gas pressure balancing assembly includes an inert gas compression tank, a negative pressure pump, a first three-way solenoid valve, a suction pipe, a first solenoid valve, a second three-way solenoid valve, an exhaust pipe, an inlet pipe, a return pipe, and a second solenoid valve. The inert gas compression tank is fixedly installed on one side of the reactor body, the negative pressure pump is fixedly installed on the top of the reactor body, the first three-way solenoid valve is fixedly installed on the top of the reactor body, the suction pipe is fixedly installed between the suction end of the negative pressure pump and the reactor body, the first solenoid valve is fixedly installed at the connection between the suction pipe and the reactor body, the second three-way solenoid valve is fixedly installed at the exhaust end of the negative pressure pump, the exhaust pipe is fixedly installed at one of the output ends of the second three-way solenoid valve, the inlet pipe is fixedly installed between the first three-way solenoid valve and the second three-way solenoid valve, the return pipe is fixedly installed between the second three-way solenoid valve and the reactor body, and the second solenoid valve is fixedly installed at the connection between the return pipe and the reactor body.

[0007] Optionally, one end of the suction pipe is connected to the reactor body through a first solenoid valve, the other end of the suction pipe is connected to the suction end of a negative pressure pump, and one end of the exhaust pipe is connected to the exhaust end of a negative pressure pump through a second three-way solenoid valve.

[0008] Optionally, one end of the intake pipe is connected to the inside of the inert gas compression tank through a first three-way solenoid valve, and the other end of the intake pipe is connected to the exhaust end of the negative pressure pump through a second three-way solenoid valve.

[0009] Optionally, one end of the reflux pipe is connected to an inert gas compression tank via a first three-way solenoid valve, and the other end of the reflux pipe is connected to the interior of the reactor body via a second solenoid valve.

[0010] Optionally, the stirring module includes a stirring rod, a first support rod, a limiting block, a fixed arm, a stirring scraper, a second support rod, and a tension spring. The stirring rod is fixedly installed at the output end of the drive motor. One end of the first support rod and the second support rod are fixedly connected to the outer wall of one end of the stirring rod. The limiting block is fixedly connected to the side wall of the first support rod. The middle part of the fixed arm is rotatably connected to one end of the first support rod. The stirring scraper is fixedly installed at one end of the fixed arm. The tension spring is movably installed between one end of the second support rod and one end of the fixed arm.

[0011] Optionally, the inner surface of the limiting block abuts against one side surface of the fixed arm, and the edge of the stirring scraper abuts against the inner wall surface of the reactor.

[0012] Optionally, one end of the tension spring is rotatably connected to one end of the second support rod, and the other end of the tension spring is rotatably connected to one end of the fixed arm.

[0013] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0014] 1. This utility model discloses a vacuum reactor for the recovery of tributyltin chloride. By setting up an inert gas pressure balancing component, specifically, during sampling or operation, through the coordinated control of the first three-way solenoid valve and the second three-way solenoid valve, combined with the suction of the negative pressure pump and the replenishment of the inert gas compression tank, inert gas can be simultaneously replenished into the reactor when removing excess gas or taking samples. This ensures that the reactor always maintains a slightly positive pressure inert environment, so as to ensure that the liquid can flow out for sampling while avoiding the problem of material contamination caused by sampling in the prior art, and ensuring the purity of the recovered material.

[0015] 2. The present invention relates to a vacuum reactor for the recovery of tributyltin chloride. By setting up a stirring module, specifically, the elastic tension of the tension spring ensures that the stirring scraper is always in close contact with the inner wall of the reactor. When the drive motor drives the stirring rod to rotate, the stirring scraper can simultaneously scrape off the sticky material adhering to the inner wall, thereby reducing the amount of tributyltin chloride remaining on the reactor wall.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of one side of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the top side structure of this utility model;

[0020] Figure 3 This is a partial sectional view of the side of this utility model;

[0021] Figure 4 This is a partial structural diagram of the mixing module of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Reactor body; 2. Inlet; 3. Outlet; 4. Drive motor; 5. Stirring module; 501. Stirring rod; 502. First support rod; 503. Limiting block; 504. Fixing arm; 505. Stirring scraper; 506. Second support rod; 507. Tension spring; 601. Inert gas compression tank; 602. Negative pressure pump; 603. First three-way solenoid valve; 604. Suction pipe; 605. First solenoid valve; 606. Second three-way solenoid valve; 607. Exhaust pipe; 608. Inlet pipe; 609. Return pipe; 610. Second solenoid valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0024] The following describes in detail, with reference to the accompanying drawings, a vacuum reactor for recovering tributyltin chloride according to an embodiment of the present invention.

[0025] Example 1

[0026] For easier understanding, please refer to Figures 1 to 4 An embodiment of the vacuum reactor for recycling tributyltin chloride provided by this utility model includes a reactor body 1, with an inlet 2 and an outlet 3 respectively opened at the top and bottom of the reactor body 1, a drive motor 4 fixedly installed at the top of the reactor body 1, a stirring module 5 provided at the output end of the drive motor 4, and an inert gas pressure balancing component provided on the outside of the reactor body 1.

[0027] The inert gas pressure balancing assembly includes an inert gas compression tank 601, a negative pressure pump 602, a first three-way solenoid valve 603, a suction pipe 604, a first solenoid valve 605, a second three-way solenoid valve 606, an exhaust pipe 607, an inlet pipe 608, a return pipe 609, and a second solenoid valve 610. The inert gas compression tank 601 is fixedly installed on one side of the reactor body 1. The negative pressure pump 602 is fixedly installed on the top of the reactor body 1. The first three-way solenoid valve 603 is fixedly installed on the top of the reactor body 1. The suction pipe 604 is fixedly installed between the suction end of the negative pressure pump 602 and the reactor body 1. The first solenoid valve 605 is fixedly installed at the connection between the suction pipe 604 and the reactor body 1. The second three-way solenoid valve 606 is fixedly installed at the exhaust end of the negative pressure pump 602. The exhaust pipe 607 is fixedly installed at one of the output ends of the second three-way solenoid valve 606. The inlet pipe 608 is fixedly installed between the first three-way solenoid valve 603 and the second solenoid valve 610. Between the three-way solenoid valve 606, the return pipe 609 is fixedly installed between the second three-way solenoid valve 606 and the reactor body 1. The second solenoid valve 610 is fixedly installed at the connection between the return pipe 609 and the reactor body 1. One end of the suction pipe 604 is connected to the reactor body 1 through the first solenoid valve 605, and the other end of the suction pipe 604 is connected to the suction end of the negative pressure pump 602. One end of the exhaust pipe 607 is connected to the exhaust end of the negative pressure pump 602 through the second three-way solenoid valve 606. One end of the inlet pipe 608 is connected to the inside of the inert gas compression tank 601 through the first three-way solenoid valve 603, and the other end of the inlet pipe 608 is connected to the exhaust end of the negative pressure pump 602 through the second three-way solenoid valve 606. One end of the return pipe 609 is connected to the inert gas compression tank 601 through the first three-way solenoid valve 603, and the other end of the return pipe 609 is connected to the inside of the reactor body 1 through the second solenoid valve 610.

[0028] The inert gas compression tank 601 is fixedly installed on one side of the reactor body 1 by a bracket; the negative pressure pump 602 is fixedly installed on the mounting base on the top of the reactor body 1 by bolts; the first three-way solenoid valve 603 is fixedly installed on the connecting pipe on the top of the reactor body 1 by a flange; one end of the suction pipe 604 is connected to the sampling port on the top of the reactor body 1 through the first solenoid valve 605, and the other end is connected to the suction end of the negative pressure pump 602 through a flange; the second three-way solenoid valve 606 is fixedly installed on the exhaust end of the negative pressure pump 602 through a flange; one end of the exhaust pipe 607 is connected to the first three-way solenoid valve 606 through the first three-way solenoid valve 605. The two-way solenoid valve 606 is connected to the exhaust end of the negative pressure pump 602, and the other end is connected to the tail gas treatment device; one end of the inlet pipe 608 is connected to the outlet of the inert gas compression tank 601 through the first three-way solenoid valve 603, and the other end is connected to the exhaust end of the negative pressure pump 602 through the second three-way solenoid valve 606; one end of the return pipe 609 is connected to the air supply port of the inert gas compression tank 601 through the first three-way solenoid valve 603, and the other end is connected to the air supply port at the top of the reactor body 1 through the second solenoid valve 610; a diversion valve is installed at the discharge port 3 for sampling.

[0029] It should be noted that both the first three-way solenoid valve 603 and the second three-way solenoid valve 606 are electromagnetically controlled and can be automatically switched by a PLC controller to ensure precise coordination between inert gas replenishment and gas extraction from the vessel. The first solenoid valve 605 and the second solenoid valve 610 are normally closed and are only opened when venting or replenishing air to further ensure the vessel's sealing.

[0030] Specifically, it is divided into the following stages: Feeding stage: Open the sealing cover of the feed inlet 2, add the tributyltin chloride material to be recycled into the reactor body 1, close the sealing cover to ensure the reactor body is sealed;

[0031] Excess gas is discharged and the reaction stage begins: The PLC controller set above controls the first solenoid valve 605 to start the negative pressure pump 602. At the same time, the second three-way solenoid valve 606 is connected to the exhaust pipe 607 to discharge the excess gas in the reactor body 1, so that the reactor body 1 generates negative pressure and enters the reaction stage.

[0032] When sampling and testing pressure balance: When sampling and testing are required, the PLC controller opens the second solenoid valve 610 and the first three-way solenoid valve 603, so that the return pipe 609 is connected to the reactor body 1 and the inert gas compression tank 601. The inert gas flows into the reactor body 1 to balance the pressure, and the sample is taken by the diversion valve installed at the outlet 3.

[0033] Vacuum restoration: After sampling, the PLC controller closes the second solenoid valve 610 and controls the first solenoid valve 605. Then, the negative pressure pump 602 is started. The second three-way solenoid valve 606 and the first three-way solenoid valve 603 connect the reactor body 1 and the inert gas compression tank 601 through the air inlet pipe 608, and the inert gas is drawn back into the inert gas compression tank 601, so that the inside of the reactor body 1 is restored to vacuum and the reaction can proceed.

[0034] Example 2

[0035] In some embodiments, such as Figure 3 , Figure 4As shown, the stirring module 5 includes a stirring rod 501, a first support rod 502, a limiting block 503, a fixed arm 504, a stirring scraper 505, a second support rod 506, and a tension spring 507. The stirring rod 501 is fixedly installed at the output end of the drive motor 4. One end of the first support rod 502 and the second support rod 506 are fixedly connected to the outer wall of one end of the stirring rod 501. The limiting block 503 is fixedly connected to the side wall of the first support rod 502. The middle part of the fixed arm 504 is rotatably connected to one end of the first support rod 502. The stirring scraper 505 is fixedly installed at one end of the fixed arm 504. The tension spring 507 is movably installed between one end of the second support rod 506 and one end of the fixed arm 504. The inner surface of the limiting block 503 abuts against one side surface of the fixed arm 504. The edge of the stirring scraper 505 abuts against the inner wall surface of the reactor body 1. One end of the tension spring 507 is rotatably connected to one end of the second support rod 506, and the other end of the tension spring 507 is rotatably connected to one end of the fixed arm 504.

[0036] The inner surface of the limiting block 503 is in close contact with one side surface of the fixed arm 504, limiting the maximum rotation angle of the fixed arm 504 to within 30°, thus preventing excessive pressure between the stirring scraper 505 and the reactor wall. The edge of the stirring scraper 505 is in close contact with the inner wall surface of the reactor body 1, with a contact gap of ≤0.5mm, ensuring the wall scraping effect. The tension spring 507 is always in a stretched state, and the elastic tension keeps the stirring scraper 505 in close contact with the reactor wall, maintaining effective contact even when there is slight deformation of the reactor wall.

[0037] It should be noted that the polytetrafluoroethylene material of the stirring scraper 505 has both corrosion resistance and low viscosity, which can reduce the adhesion of tributyltin chloride material; the elastic coefficient of the tension spring 507 has been optimized (10-15N / mm), which can ensure the scraper's adhesion to the wall without causing excessive load on the drive motor 4 due to excessive tension.

[0038] Working Principle: In operation, first open the sealing cap of inlet 2, add the tributyltin chloride material to be recovered into reactor body 1, close the sealing cap to ensure a tight seal, and then the PLC controller controls the first solenoid valve 605 to start the negative pressure pump 602. Simultaneously, the second three-way solenoid valve 606 connects to the exhaust pipe 607 to discharge excess gas from reactor body 1, creating negative pressure and initiating the reaction stage. The drive motor 4 drives the stirring module 5 for stirring. During stirring, the elastic tension of the tension spring 507 keeps the stirring scraper 505 in close contact with the inner wall of reactor body 1. As the drive motor 4 rotates the stirring rod 501, the stirring scraper 505 simultaneously scrapes away the sticky material adhering to the inner wall, reducing the residual amount of tributyltin chloride on the reactor wall. When sampling is required... During testing, the PLC controller opens the second solenoid valve 610 and the first three-way solenoid valve 603, connecting the return pipe 609 to the reactor body 1 and the inert gas compression tank 601. Inert gas flows into the reactor body 1 to balance the pressure. Sampling is performed by the diversion valve installed at the outlet 3. After sampling, the PLC controller closes the second solenoid valve 610 and controls the first solenoid valve 605. Then, the negative pressure pump 602 is started. The second three-way solenoid valve 606 and the first three-way solenoid valve 603 connect the reactor body 1 and the inert gas compression tank 601 through the air inlet pipe 608, drawing the inert gas back into the inert gas compression tank 601, restoring the vacuum inside the reactor body 1 for the reaction to continue. After the reaction is completed, the drive motor 4 is turned off, and the manual ball valve at the outlet 3 is opened for discharge.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application.

Claims

1. A vacuum reactor for recovering tributyltin chloride, characterized in that: The reactor includes a reactor body (1), with an inlet (2) and an outlet (3) at the top and bottom of the reactor body (1), respectively. A drive motor (4) is fixedly installed on the top of the reactor body (1), and a stirring module (5) is provided at the output end of the drive motor (4). An inert gas pressure balance assembly is provided on the outside of the reactor body (1). The inert gas pressure balancing assembly includes an inert gas compression tank (601), a negative pressure pump (602), a first three-way solenoid valve (603), a suction pipe (604), a first solenoid valve (605), a second three-way solenoid valve (606), an exhaust pipe (607), an inlet pipe (608), a return pipe (609), and a second solenoid valve (610). The inert gas compression tank (601) is fixedly installed on one side of the reactor body (1), the negative pressure pump (602) is fixedly installed on the top of the reactor body (1), the first three-way solenoid valve (603) is fixedly installed on the top of the reactor body (1), and the suction pipe (604) is fixedly installed at the suction end of the negative pressure pump (602). Between the reactor bodies (1), the first solenoid valve (605) is fixedly installed at the connection between the suction pipe (604) and the reactor body (1), the second three-way solenoid valve (606) is fixedly installed at the exhaust end of the negative pressure pump (602), the exhaust pipe (607) is fixedly installed at one of the output ends of the second three-way solenoid valve (606), the air inlet pipe (608) is fixedly installed between the first three-way solenoid valve (603) and the second three-way solenoid valve (606), the return pipe (609) is fixedly installed between the second three-way solenoid valve (606) and the reactor body (1), and the second solenoid valve (610) is fixedly installed at the connection between the return pipe (609) and the reactor body (1).

2. The vacuum reactor for recovering tributyltin chloride according to claim 1, characterized in that: One end of the suction pipe (604) is connected to the reactor body (1) through the first solenoid valve (605), and the other end of the suction pipe (604) is connected to the suction end of the negative pressure pump (602). One end of the exhaust pipe (607) is connected to the exhaust end of the negative pressure pump (602) through the second three-way solenoid valve (606).

3. The vacuum reactor for recovering tributyltin chloride according to claim 1, characterized in that: One end of the intake pipe (608) is connected to the inside of the inert gas compression tank (601) through the first three-way solenoid valve (603), and the other end of the intake pipe (608) is connected to the exhaust end of the negative pressure pump (602) through the second three-way solenoid valve (606).

4. The vacuum reactor for recovering tributyltin chloride according to claim 1, characterized in that: One end of the reflux pipe (609) is connected to the inert gas compression tank (601) through the first three-way solenoid valve (603), and the other end of the reflux pipe is connected to the inside of the reactor body (1) through the second solenoid valve (610).

5. The vacuum reactor for recovering tributyltin chloride according to claim 1, characterized in that: The stirring module (5) includes a stirring rod (501), a first support rod (502), a limiting block (503), a fixed arm (504), a stirring scraper (505), a second support rod (506), and a tension spring (507). The stirring rod (501) is fixedly installed at the output end of the drive motor (4). One end of the first support rod (502) and the second support rod (506) are fixedly connected to the outer wall of one end of the stirring rod (501). The limiting block (503) is fixedly connected to the side wall of the first support rod (502). The middle part of the fixed arm (504) is rotatably connected to one end of the first support rod (502). The stirring scraper (505) is fixedly installed at one end of the fixed arm (504). The tension spring (507) is movably installed between one end of the second support rod (506) and one end of the fixed arm (504).

6. The vacuum reactor for recovering tributyltin chloride according to claim 5, characterized in that: The inner surface of the limiting block (503) abuts against one side surface of the fixed arm (504), and the edge of the stirring scraper (505) abuts against the inner wall surface of the reactor body (1).

7. The vacuum reactor for recovering tributyltin chloride according to claim 5, characterized in that: One end of the tension spring (507) is rotatably connected to one end of the second support rod (506), and the other end of the tension spring (507) is rotatably connected to one end of the fixed arm (504).

Images