CN213434478U

CN213434478U - Polymerization kettle for producing cationic polymer resin

Info

Publication number: CN213434478U
Application number: CN202022359216.0U
Authority: CN
Inventors: 李斌斌; 徐黎明; 任昱晓
Original assignee: Suzhou Qixiang New Material Co ltd
Current assignee: Suzhou Qixiang New Material Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-06-15
Anticipated expiration: 2030-10-21

Abstract

The utility model discloses a polymeric kettle of production cation polymerization resin, include the cauldron body and establish the heat transfer agitating unit at cauldron body center, the puddler among the heat transfer agitating unit comprises (mixing) shaft and fix stirring epaxial stirring rake and stirring frame. The (mixing) shaft is the concentric tubule's of thick tube housing structure, and inlayer tubule is the inlet tube, and outer thick pipe is the outlet pipe, there is the space that presses close to the stirring rake surface in the stirring rake, the stirring frame is the hollow tube, and the coolant liquid can be in space and hollow tube mesocycle flow. Firstly, this puddler form is the composite construction of frame and paddle, and the scope of stirring has been guaranteed to the frame, and the paddle improves the reactant and flows efficiency from top to bottom, and both combine to promote stirring effect, make the reactant mix more evenly, and the temperature distribution of reactant is more even, and heat exchange efficiency improves, and the reaction is more abundant. The cooling liquid circulation can be realized through the internal pipelines in the stirring paddle and the stirring frame, so that the heat exchange efficiency is effectively increased.

Description

Polymerization kettle for producing cationic polymer resin

Technical Field

The utility model relates to a chemistry processing field, concretely relates to polymeric kettle.

Background

The active species of cationic polymerization is generally carbocation, carbocation is very active, rearrangement and chain transfer reaction are easy to occur, and the transfer is the main mode for terminating the cationic polymerization and is difficult to achieve the requirements of the active polymerization, so the chain transfer is a key factor for controlling the molecular weight of the polymer. In cationic polymerization, the chain transfer constant to a monomer is much larger than that in radical polymerization, and in order to reduce the occurrence of chain transfer reaction and increase the molecular weight of a polymer, the cationic polymerization reaction generally needs to be performed at a low temperature, thereby achieving the purpose of increasing the polymerization degree. The cationic polymer resin is often accompanied with violent heat release in the preparation process, and has higher requirements on the heat dissipation efficiency of a reaction kettle.

Most of the existing polymerization kettles have the cooling and heat exchange efficiency which cannot meet the temperature requirement of the preparation of the cationic polymerization resin, and can rely on a jacket outside the kettle wall or an inner coil pipe on the inner wall of the kettle wall to dissipate heat in the reaction process, so that the heat dissipation mode is single and the heat dissipation efficiency is low; and the existing stirring rod is mostly in a single paddle type or frame type, so that reactants in the kettle cannot be fully stirred, the reactants are fully mixed, the temperature is uniform, and the reaction cannot be fully performed. Aiming at the characteristic of cationic polymerization reaction, I designs an industrially applicable polymerization kettle for cationic polymerization resin, and the polymerization kettle can effectively achieve the purposes of cooling and fully stirring reactants and improve the polymerization degree and conversion rate of the cationic polymerization reaction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing a polymerization kettle for producing cation polymerization resin, which has enough heat dissipation efficiency in the polymerization reaction process and provides a low-temperature environment for the cation polymerization reaction; meanwhile, the reactants can be fully stirred to fully react.

The utility model discloses a following technical scheme realizes:

the utility model provides a polymeric kettle of production cation polymerization resin, includes the cauldron body and establishes the heat transfer agitating unit at cauldron body center, puddler among the heat transfer agitating unit is by the (mixing) shaft and fix stirring rake and the agitator frame that stirs epaxially and constitute, the (mixing) shaft is the structure of the concentric tubule of thick tube housing, and the inlayer tubule is the inlet tube, and outer thick pipe is the outlet pipe, there is the space of pressing close to the agitator rake surface in the agitator paddle, and the space forms the return circuit with the inlet tube intercommunication in the (mixing) shaft, the agitator frame is the hollow tube, agitator frame bottom and (mixing) shaft inlet tube intercommunication, and the top then communicates with. Firstly, this puddler form is the composite construction of frame and paddle, and the scope of stirring has been guaranteed to the frame, and the paddle improves the reactant and flows efficiency from top to bottom, and both combine to promote stirring effect, make the reactant mix more evenly, and the reaction is more abundant, and the temperature of reactant also distributes more evenly, and heat exchange efficiency improves. Secondly, all can realize the coolant liquid circulation through the internal pipeline in stirring rake and the stirring frame to effectively increase heat exchange efficiency.

The utility model discloses a further improvement is, the stirring rake is rectangular blade form. When the stirring mixing effect is increased, the heat exchange area is increased, and the heat exchange efficiency is improved.

The utility model discloses a further improvement is, cauldron body cauldron wall outer wall cover has the cover that presss from both sides, and the inner wall is equipped with the inner coil pipe. When needing the cooling, press from both sides cover and interior coil pipe and lead to the coolant liquid simultaneously, the heat transfer cooling effect stack improves cooling efficiency.

The utility model discloses a further improvement is, interior coil pipe arranges in inside wall and interior diapire. Compare in prior art, interior coil pipe not only arranges in the inside wall, still arranges in interior diapire, increases heat exchange area, promotes cooling efficiency.

The utility model discloses a further improvement is, cauldron body length is greater than the diameter. The cauldron body is long and thin dress, helps increasing the area of contact of liquid and interior coil pipe, puddler to improve heat exchange efficiency.

The utility model discloses a further improvement is, cauldron body cauldron bottom is equipped with bayonet thermometer. Before the reaction solution is dripped, the liquid level of the solvent in the kettle is lower, and a thermometer inserted in the bottom of the kettle can accurately measure the temperature in the kettle.

To sum up, compared with the prior art, the utility model has the advantages that:

firstly, paddle type adds the puddler of frame form, improves the mixture degree of consistency of reactant greatly, makes the inside temperature of reactant even, and the reaction is abundant.

And a liquid cooling pipeline is arranged in the stirring frame, so that the heat dissipation efficiency is greatly improved, and the low-temperature environment of the cationic polymerization reaction is ensured.

Thirdly, the jacket and the inner coil pipe are used simultaneously, and the heat exchange efficiency is improved.

And fourthly, an inserted thermometer at the bottom of the kettle can accurately measure the temperature in the kettle when the liquid level of the solvent in the kettle is lower before the reaction liquid is dripped.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1. a kettle body; 2. a heat exchange stirring device; 21. a water outlet; 22. a water inlet; 23. a stirring rod; 231. a stirring shaft; 232. a stirring paddle; 233. a stirring frame; 3. a jacket; 4. an inner coil pipe.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the utility model comprises a kettle body 1 and a heat exchange stirring device 2 arranged at the center of the kettle body, wherein a stirring rod 23 in the heat exchange stirring device 2 is composed of a stirring shaft 231, a stirring paddle 232 and a stirring frame 233 which are fixed on the stirring shaft 231, the stirring shaft 231 is a structure of thick pipe sleeve concentric thin pipes, the inner thin pipe is a water inlet pipe, and the outer thick pipe is a water outlet pipe; a gap close to the surface of the stirring paddle is formed in the stirring paddle 232, and the gap is communicated with a water inlet pipe in the stirring shaft to form a loop; the stirring frame 233 is a hollow tube, the bottom of the stirring frame 233 is communicated with a water inlet pipe of the stirring shaft 231, and the top of the stirring frame 233 is communicated with a water outlet pipe of the stirring shaft 231; the stirring paddle 232 is in a strip blade shape; the outer wall of the kettle body 1 is sleeved with a jacket 3, and the inner side wall and the bottom wall are provided with inner coil pipes 4; the kettle body 1 is slender, and the length of the kettle body 1 is greater than the diameter; and an insertion thermometer 5 is arranged at the bottom of the kettle body 1.

When the utility model is in operation, reactants are mixed and react in the kettle body 1, the cooling liquid enters from the water inlet 22, flows into the central tubule of the stirring shaft 231 through the rotary joint, flows into the gap of the stirring paddle 232 through the central tubule of the stirring shaft 231, and flows back to the tubule again after flowing through the loop formed by the gap, thereby completing heat exchange, taking away heat and reducing the temperature of the stirring paddle 232; the cooling liquid continuously flows downwards, flows into the hollow pipeline of the stirring frame 233 through the thin central pipe of the stirring shaft 231, flows into the thick pipe of the stirring shaft 231 through the hollow pipeline, completes heat exchange, takes away heat, and finally flows out of the outflow port 21. Meanwhile, cooling liquid is also introduced into the jacket 3 and the inner coil 4 on the kettle body, and the cooling liquid and reactants in the kettle perform heat exchange together, so that the low-temperature environment required by the cationic polymerization reaction is ensured together. The plug-in thermometer 5 of the kettle bottom 1 can accurately measure the temperature in the kettle when the liquid level of the solvent in the kettle is lower before the reaction liquid is dripped.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a polymeric kettle of production cation polymerization resin, includes the cauldron body (1) and establishes heat transfer agitating unit (2) at cauldron body center, its characterized in that: puddler (23) in heat transfer agitating unit (2) are by (mixing) shaft (231) and fix stirring rake (232) and stirring frame (233) on (mixing) shaft (231) and constitute, stirring shaft (231) are the structure of thick tube sleeve tubule, and the inlayer tubule is the inlet tube, and outer thick pipe is the outlet pipe, thick pipe and tubule are concentric, there is the space of pressing close to the stirring rake surface in stirring rake (232), and the inlet tube in space and (mixing) shaft (231 leads to and forms the return circuit, stirring frame (233) are the hollow tube structure, and stirring frame bottom pipeline and (mixing) shaft (231) inlet tube intercommunication, top pipeline then with (mixing) shaft (231) outlet pipe intercommunication.

2. A polymerizer for producing a cationic polymer resin, according to claim 1, wherein: the stirring paddle (232) is in a strip blade shape.

3. A polymerizer for producing a cationic polymer resin, according to claim 1, wherein: the outer wall of the kettle body (1) is sleeved with a jacket (3), and the inner wall is provided with an inner coil (4).

4. A polymerizer for producing a cationic polymer resin, according to claim 3, wherein: the inner coil (4) is arranged on the inner side wall and the inner bottom wall.

5. A polymerizer for producing a cationic polymer resin, according to claim 1, wherein: the length of the kettle body (1) is larger than the diameter.

6. A polymerizer for producing a cationic polymer resin, according to claim 1, wherein: and an inserted thermometer (5) is arranged at the bottom of the kettle body (1).