Nitrogen filling anti-self-polymerization device in polymerization device
By designing a nitrogen filling anti-self-polymerization device in the polymerization device, and using the cooperation of annular scrapers, motors and sleeves, the problem of inconvenient cleaning of raw materials on the inner wall of the kettle in the polymerization device is solved, labor costs are reduced and work efficiency is improved.
Patent Information
- Application Number
- CN202420476905.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The existing polymerization device is inconvenient to clean up raw materials attached to the inner wall of the kettle body, resulting in increased subsequent labor costs.
A nitrogen filling anti-self-aggregation device is designed. Through the cooperation between the annular scraper, the motor and the sleeve, the wall-mounted raw materials in the kettle can be cleaned.
It effectively solves the problem that the existing device is inconvenient to clean the raw materials attached to the inner wall of the kettle, increases subsequent labor costs, and improves work efficiency.
Smart Images
Figure CN222369085U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polymerization devices, in particular to a nitrogen filling anti-self-polymerization device in a polymerization device. Background Art
[0002] During the production process of polyvinyl chloride resin, refined vinyl chloride enters the polymerization kettle from the top of the polymerization kettle through the monomer filter for reaction. At the same time, a foam level meter is installed on the top of the polymerization kettle to detect the liquid level in the kettle to prevent the liquid level from being too high or too low and affecting the reaction.
[0003] During the reaction process, as the reaction temperature in the polymerization kettle increases, polyethylene gasifies and accumulates at the vinyl chloride pipe mouth and the foam level gauge, where self-polymerization is likely to occur, forming self-polymers, reducing the quality of polyvinyl chloride resin and affecting the production capacity of the polymerization kettle.
[0004] However, the existing device is not convenient for cleaning the raw materials attached to the inner wall of the kettle, which increases the subsequent manpower cost. Utility Model Content
[0005] In view of the deficiencies of the prior art, the utility model provides a nitrogen filling anti-self-polymerization device in a polymerization device, which solves the problem that the prior device is inconvenient to clean the raw materials attached to the inner wall of the kettle, which increases the subsequent labor costs.
[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a nitrogen filling anti-self-polymerization device in a polymerization device, comprising a kettle body, two bases are installed at the bottom of the kettle body, a condenser is installed on the top of the kettle body, a pipe body is connected to the top of the kettle body, one end of the pipe body is connected to a nitrogen storage tank, a foam level gauge is arranged on the outside of the pipe body, an auxiliary mechanism is arranged on the outside of the kettle body, the auxiliary mechanism comprises an outer shell, a sleeve, a vertical rod and an annular scraper, a lower side of one side of the outer shell is fixedly connected to the outer side of the kettle body, a sleeve is slidably engaged with the inner side of the outer shell, one side of the outer wall of the sleeve is movably connected to the outer through hole of the outer shell, a vertical rod is fixedly connected to one side of the sleeve, the outer side of the vertical rod is movably connected to the top through hole of the kettle body, and the outer side of the annular scraper is fixedly connected to the bottom of the vertical rod and movably connected to the inner side of the kettle body.
[0007] Preferably, the inner side of the sleeve is threadedly connected to a screw, the outer side of the screw is rotatably connected to the inner side of the housing via a bearing, and a motor is installed on the top of the screw.
[0008] Preferably, a motor is installed at the bottom of the kettle body, and the outer wall of the output end of the motor is rotatably connected to the bottom of the kettle body through a sealed bearing, and the output end of the motor is fixedly connected to a first stirring rod.
[0009] Preferably, a circular sleeve is fixedly connected to the lower part of the outer wall of the first stirring rod, and two second stirring rods are installed on the outer side of the circular sleeve.
[0010] Preferably, a water jacket is installed on the outside of the kettle body, a temperature probe is installed on the outside of the water jacket, the monitoring end of the temperature probe extends into the inside of the water jacket, the outside of the water jacket is connected to a water inlet pipe and a water outlet pipe, and the side of the kettle body is connected to a separation pipe.
[0011] Beneficial Effects
[0012] The utility model provides a nitrogen filling anti-self-aggregation device in a polymerization device. It has the following beneficial effects: the nitrogen filling anti-self-aggregation device in the polymerization device realizes the cleaning of the raw materials hanging on the inner wall of the kettle body through the cooperation between the annular scraper, the motor and the sleeve, and solves the problem that the existing device is not convenient for cleaning the raw materials attached to the inner wall of the kettle body, which increases the subsequent labor cost.
[0013] Through the cooperation among the round sleeve, the second stirring rod and the first stirring rod, the reaction efficiency between the raw materials participating in the reaction is improved by driving the first stirring rod and the two second stirring rods through the motor, thereby improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the appearance of the utility model;
[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the probe, housing and separation pipe;
[0017] Figure 4 for Figure 1 Schematic diagram of the structure of the middle circular sleeve, the second stirring rod and the first stirring rod.
[0018] In the figure: 1, kettle body, 2, water jacket, 3, temperature probe, 4, motor, 5, base, 6, round sleeve, 7, second stirring rod, 8, first stirring rod, 9, water inlet pipe, 10, water outlet pipe, 11, annular scraper, 12, vertical rod, 13, condenser, 14, foam level gauge, 15, pipe body, 16, nitrogen storage tank, 17, motor, 18, probe, 19, outer shell, 20, separation pipe, 21, screw. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] The existing device is not convenient for cleaning the raw materials attached to the inner wall of the kettle, which increases the subsequent labor costs.
[0021] In view of this, a nitrogen filling anti-self-polymerization device in a polymerization device is provided. Through the cooperation between the annular scraper, the motor and the sleeve, the cleaning of the raw materials hanging on the inner wall of the kettle body is achieved, which solves the problem that the existing device is inconvenient to clean the raw materials attached to the inner wall of the kettle body, thereby increasing the subsequent labor costs.
[0022] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.
[0023] Embodiment 1: By Figure 1-3 It can be seen that a nitrogen filling anti-self-polymerization device in a polymerization device comprises a kettle body 1, two bases 5 are installed at the bottom of the kettle body 1, a condenser 13 is installed at the top of the kettle body 1, a pipe body 15 is connected to the top of the kettle body 1, one end of the pipe body 15 is connected to the nitrogen storage tank 16, a foam level gauge 14 is arranged on the outside of the pipe body 15, and an auxiliary mechanism is arranged on the outside of the kettle body 1, the auxiliary mechanism comprises a shell 19, a sleeve 18, a vertical rod 12 and an annular scraper 11, one side of the shell 19 is fixedly connected to the outside of the kettle body 1, the inner side of the shell 19 is slidably clamped with the sleeve 18, the sleeve 18 can move inside the shell 19, one side of the outer wall of the sleeve 18 is movably connected to the outer through hole of the shell 19, one side of the sleeve 18 is fixedly connected to the vertical rod 12, the outer side of the vertical rod 12 is movably connected to the top through hole of the kettle body 1, and the bottom of the vertical rod 12 is fixedly connected to the outer side of the annular scraper 11, which is movably connected to the inner side of the kettle body 1;
[0024] In the specific implementation process, it is worth pointing out that the sleeve 18, the vertical rod 12 and the annular scraper 11 cooperate to clean the raw materials attached to the inner wall of the kettle body 1, which solves the problem that the existing device is not convenient for cleaning the raw materials attached to the inner wall of the kettle body 1, which increases the subsequent labor cost.
[0025] Furthermore, the inner side of the sleeve 18 is threadedly connected to a screw rod 21, the outer side of the screw rod 21 is rotatably connected to the inner side of the housing 19 via a bearing, and a motor 17 is installed on the top of the screw rod 21, and the model of the motor 17 is not limited;
[0026] In the specific implementation process, it is worth pointing out that after the motor 17 is started, it can drive the screw 21 to rotate, and the screw 21 can drive the sleeve 18 to move up and down when rotating, thereby indirectly driving the annular scraper 11 to move;
[0027] Specifically, when the nitrogen filling anti-self-polymerization device in the polymerization device is used, at the beginning of the polymerization reaction, vinyl chloride is added to the kettle body 1 through DCS control, and nitrogen is cooled from the nitrogen storage tank 16 to the top of the kettle, and the condenser 1 is filled, and the foam level gauge 14 is used to detect and monitor the liquid level in the kettle body 1. Since the reaction temperature in the kettle body 1 has not reached the boiling point of vinyl chloride, the vinyl chloride remains in a liquid phase at this time; with the addition of reaction aids and the progress of the reaction, the temperature in the kettle body 1 rises, and at this time, part of the gas phase vinyl chloride gathers at the top of the kettle, and the condenser 13 is started to fill the kettle body 1 with nitrogen. Since the density of nitrogen is smaller than that of gas phase vinyl chloride, nitrogen gathers at the top of the polymerization kettle, occupying the gas phase space at the top of the kettle, so that vinyl chloride cannot gather around the vinyl chloride pipe mouth and the foam level gauge, thereby preventing the occurrence of self-polymerization of vinyl chloride around the vinyl chloride pipe mouth and the foam level gauge.
[0028] Embodiment 2: By Figure 1 , 2 As can be seen from Figures 4 and 5, a motor 4 is installed at the bottom of the kettle body 1, and the outer wall of the output end of the motor 4 is rotatably connected to the bottom of the kettle body 1 through a sealed bearing, and a first stirring rod 8 is fixedly connected to the output end of the motor 4;
[0029] In the specific implementation process, it is worth pointing out that the motor 4 can drive the first stirring rod 8 to rotate to fully mix the raw materials inside the kettle body 1;
[0030] Furthermore, a circular sleeve 6 is fixedly connected to the lower part of the outer wall of the first stirring rod 8, and two second stirring rods 7 are installed on the outer side of the circular sleeve 6;
[0031] In the specific implementation process, it is worth noting that the two second stirring rods 7 rotate synchronously with the first stirring rod 8;
[0032] Furthermore, a water jacket 2 is installed on the outside of the kettle body 1, a temperature probe 3 is installed on the outside of the water jacket 2, the monitoring end of the temperature probe 3 extends into the inside of the water jacket 2, the outside of the water jacket 2 is connected with a water inlet pipe 9 and a water outlet pipe 10, and the side of the kettle body 1 is connected with a separation pipe 20;
[0033] In the specific implementation process, it is worth pointing out that one end of the separation pipeline 20 is connected to a cyclone separator. After the reaction is completed, the nitrogen and the unreacted vinyl chloride gas pass through the cyclone separator and enter the gas cabinet for subsequent recovery and treatment.
[0034] Specifically, based on the above-mentioned embodiment 1, through the cooperation between the circular sleeve 6, the second stirring rod 7 and the first stirring rod 8, the motor 4 drives one first stirring rod 8 and two second stirring rods 7 to improve the reaction efficiency between the reaction raw materials and improve the work efficiency.
[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".
[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A nitrogen-filled anti-self-polymerization device in a polymerization device, comprising a kettle (1), characterized in that: Two bases (5) are installed at the bottom of the kettle (1), a condenser (13) is installed at the top of the kettle (1), a pipe (15) is connected to the top of the kettle (1), one end of the pipe (15) is connected to a nitrogen storage tank (16), a foam level gauge (14) is arranged on the outside of the pipe (15), and an auxiliary mechanism is arranged on the outside of the kettle (1); The auxiliary mechanism comprises a housing (19), a sleeve (18), a vertical rod (12) and an annular scraper (11); The lower side of one side of the shell (19) is fixedly connected to the outer side of the kettle body (1); the inner side of the shell (19) is slidably connected with a sleeve (18); one side of the outer wall of the sleeve (18) is movably connected to the outer through hole of the shell (19); one side of the sleeve (18) is fixedly connected to a vertical rod (12); the outer side of the vertical rod (12) is movably connected to the top through hole of the kettle body (1); the bottom of the vertical rod (12) is fixedly connected to the outer side of the annular scraper (11) and is movably connected to the inner side of the kettle body (1).
2. The nitrogen-filled anti-self-polymerization device in a polymerization device according to claim 1, characterized in that: The inner side of the sleeve (18) is threadedly connected to a screw rod (21), the outer side of the screw rod (21) is rotatably connected to the inner side of the housing (19) via a bearing, and a motor (17) is installed on the top of the screw rod (21).
3. The nitrogen-filled anti-self-polymerization device in a polymerization device according to claim 1, characterized in that: A motor (4) is installed at the bottom of the kettle body (1); the outer wall of the output end of the motor (4) is rotatably connected to the bottom of the kettle body (1) via a sealed bearing; and a first stirring rod (8) is fixedly connected to the output end of the motor (4).
4. The nitrogen-filled anti-self-polymerization device in a polymerization device according to claim 3, characterized in that: A circular sleeve (6) is fixedly connected to the lower part of the outer wall of the first stirring rod (8), and two second stirring rods (7) are installed on the outer side of the circular sleeve (6).
5. The nitrogen-filled anti-self-polymerization device in a polymerization device according to claim 1, characterized in that: A water jacket (2) is installed on the outside of the kettle body (1), a temperature probe (3) is installed on the outside of the water jacket (2), a monitoring end of the temperature probe (3) extends into the inside of the water jacket (2), the outside of the water jacket (2) is connected to a water inlet pipe (9) and a water outlet pipe (10), and the side of the kettle body (1) is connected to a separation pipe (20).