Vacuum reaction kettle capable of realizing graded feeding
By designing a vacuum reactor that can be added with a graded feed, first prepolymerization is performed in a vacuum or inert gas environment, and then adding materials with a faster reaction speed, the problem of excessive gap in the length of the chain segment when polymer materials are copolymerized at different reaction speeds is solved, and uniform copolymerization of polymers is achieved.
Patent Information
- Application Number
- CN202421023670.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The prior art is difficult to make polymer materials of different reaction rates copolymerize during polymerization, resulting in too large gap in the length of the chain segment and affecting the uniformity of the polymer.
A vacuum reactor that can be added with a graded feed is designed. By first adding materials with slow reaction speed to the reactor, adding catalyst, and prepolymerizing in a vacuum or inert gas environment, after the first material reacts to a certain level, then adding materials with fast reaction speed through the feed port to achieve copolymerization of the two materials.
Through this method, the copolymerization of polymers at different reaction rates can be made more uniform, avoiding the problem of excessive gap in segment lengths, and improving the quality and consistency of the polymer.
Smart Images
Figure CN222872102U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reaction kettles, in particular to a vacuum reaction kettle capable of graded feeding. Background Art
[0002] The reactor is a comprehensive reaction vessel. The design of the reactor structure, function and accessories is based on the reaction conditions. From feeding-reaction-discharging, the pre-set reaction steps can be completed with a high degree of automation, and the temperature, pressure, mechanical control and other important parameters in the reaction process are strictly regulated. Its structure is generally composed of a kettle body, a stirring device, a heating device and a sealing device.
[0003] The vacuum reactor with graded feeding can be used for the polymerization of two or more polymer materials with different reaction speeds. The slow-reacting material can be added into the reactor for prepolymerization first. When the polymerization reaches a certain degree, the material with a faster polymerization speed is added, so that the two materials can be copolymerized and the chain length difference will not be too large. Utility Model Content
[0004] The utility model aims to provide a vacuum reactor capable of graded feeding, which can make copolymerization of two or more polymers with different reaction speeds more uniform.
[0005] The technical solution adopted by the graded feeding reactor disclosed in the utility model is:
[0006] A reactor capable of graded feeding comprises a base, a kettle body, a kettle cover, and a motor. The kettle cover is designed with an air inlet valve, an air outlet valve, a vacuum valve, an observation window, a lighting window, and a feeding port. The kettle body is fixed on the base and can be turned 360 degrees. A lifting rod is installed on the base to connect the kettle cover so as to lift the kettle cover. A motor is installed above the kettle cover and a stirring paddle is installed below the kettle cover to improve the sealing performance of the reactor. A sealing gasket is installed between the kettle cover and the kettle body and fixed with a flange. The kettle body is divided into an inner tank and an outer wall. The inner tank and the outer wall are connected at upper and lower ends respectively. A heating wire is installed between the inner tank and the outer wall. The kettle body of the reactor is cylindrical, the bottom of the reactor is conical, and a discharge port is reserved at the lower end of the bottom of the reactor.
[0007] As a preferred solution, a servo motor is selected as the motor, which is linked to the stirring paddle through magnetic coupling, which is beneficial to improving the sealing degree of the reactor. The lower end of the servo motor is directly connected to the coupling, and the torque sensor is connected to the servo motor through a linkage shaft. The lower end of the torque sensor is connected to the magnetic transmission, and the lower end of the magnetic transmission is directly connected to the stirring paddle. The magnetic transmission is directly welded to the reactor cover, which greatly ensures the airtightness of the reactor.
[0008] As a preferred option, the lifting device uses hydraulic lifting, which is simple and convenient to operate.
[0009] As a preferred solution, the kettle cover is designed with an air inlet valve, a vacuum valve and an exhaust hole.
[0010] As a preferred solution, a pressure gauge is installed on the kettle cover to observe the pressure inside the kettle in real time.
[0011] As a preferred solution, the kettle cover is equipped with a lighting window and an observation window, which are sealed with high-temperature resistant glass, so that changes in the material in the kettle can be observed in real time.
[0012] As a preferred solution, a torque sensor is installed on the motor to determine the change of the material by the change of the torque.
[0013] The utility model discloses a reactor with graded feeding, which has the beneficial effect that when materials with different reaction speeds are subjected to polymerization reaction, the reaction process needs to be carried out in an anhydrous and oxygen-free environment or under vacuum conditions. The reactor provides a solution, in which materials with a slower polymerization speed can be added to the reactor first, a catalyst can be added, and the gas in the reactor is replaced with an inert gas, or a vacuum state is achieved. When the first material reacts to a certain extent, the reactor is protected by an inert gas, and the second material is added at the feeding port. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.
[0015] Figure 1 Reactor front view
[0016] Figure 2 Reactor top view
[0017] Figure 3 Figure 3 Reactor Section
[0018] 1 observation hole 2 lighting hole 3 feeding port 4 kettle cover 5 kettle body 6 motor 7 stirring paddle 8 discharge port. DETAILED DESCRIPTION
[0019] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "the", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] Example 1, please refer to Figure 1 The reactor provided in this embodiment has a servo motor installed on the top wall, and the stirring is driven by magnetic coupling to ensure the vacuum degree of the reactor. The reactor cover and the reactor body are sealed with a flange, and the stirring is carried out by an anchor frame stirring paddle. The temperature probe is placed between the stirring paddle and the stirring rod.
[0023] During the use of the reactor, after the initial material is added, the reactor cover is sealed, vacuum is drawn, and a certain vacuum degree is maintained in the reactor. When the reaction proceeds to a certain extent and the second material needs to be added, an inert gas is passed into the reactor, and the second and third materials are added through the feeding port on the top of the reactor cover. The feeding port is closed and vacuum is drawn. The temperature in the reactor is relatively high, and it is not easy for outside air to enter the reactor, thereby ensuring that the materials in the reactor are exposed to the air as little as possible.
[0024] Example 2, please refer to Figure 1 This embodiment provides a reactor, the reactor cover has two observation holes, one observation hole is connected to an external light source to play a lighting role, and the other observation hole is used to observe the material changes in the reactor in real time.
[0025] Please refer to Example 3 Figure 1 The motor above the reactor is connected to a torque sensor, and the reaction of the polymer in the reactor is judged according to the torque change.
[0026] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A vacuum reactor capable of graded feeding, characterized in that: It comprises a kettle body, a kettle cover, a motor, a torque sensor, and a stirring paddle. The kettle cover is provided with an observation window, a lighting window, a feeding port, an air inlet valve, and a vacuum valve. The motor of the reactor adopts a servo motor, a torque sensor is installed on the motor, and the motor is linked to the stirring paddle by magnetic coupling. The heating method of the reactor adopts electric heating. A sealing gasket is installed between the kettle body and the kettle cover of the reactor. The kettle body and the kettle cover are fixed with a flange, and a discharge port is reserved at the lower end of the bottom of the kettle.
2. The reactor according to claim 1, characterized in that: The kettle cover is provided with an observation window and a lighting window, and both the observation window and the lighting window are sealed with high temperature resistant glass; the kettle cover is provided with a feeding port, and the feeding port can be sealed; the kettle cover is provided with a vacuum valve, an air inlet valve, and an exhaust hole.
3. The reactor according to claim 2, characterized in that: The kettle body is cylindrical and the bottom is conical.
4. The reactor according to claim 3, characterized in that: The kettle body is divided into an inner tank and an outer wall, the upper end of the inner tank is connected to the upper end of the outer wall, and the lower end of the inner tank is connected to the lower end of the outer wall; the reaction kettle is heated by a heating wire, and the heating wire is wound on the inner tank.
5. The reactor according to claim 1 or 4, characterized in that: The reactor is provided with a support, a base and a control system.