CN210332669U

CN210332669U - Polymerization reaction kettle

Info

Publication number: CN210332669U
Application number: CN201920989862.XU
Authority: CN
Inventors: 王宇; 周敬扩; 熊俊超
Original assignee: SHANGHAI YUKING WATER SOLUBLE MATERIAL Tech CO Ltd
Current assignee: SHANGHAI YUKING WATER SOLUBLE MATERIAL Tech CO Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-17
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a polymerization reaction kettle, which comprises a kettle body and a heat preservation layer arranged outside the kettle body, wherein a heat exchange medium outlet is arranged above the heat preservation layer, the polymerization reaction kettle is provided with a stirring device, a stirring shaft of the stirring device extends into the kettle body, two layers of stirring paddles are arranged below the stirring device, and a heat exchange medium circulating pipe is arranged between the two layers of stirring paddles; the heat exchange medium circulating pipe is wound in a regular triangle shape, the inlet end and the outlet end of the heat exchange medium circulating pipe are adjacently arranged on one corner of the regular triangle, the inlet end is close to the inner wall of the kettle body and upwards penetrates out of the upper sealing cover of the kettle body, and the outlet end downwards penetrates through the kettle body and enters into an interlayer between the kettle body and the heat insulation layer. The utility model can realize rapid heat exchange through the built-in heat exchange medium circulating pipe, which is beneficial to improving the heating or cooling rate; and moreover, the heat-insulating layer can effectively reduce the loss caused by heat and air exchange in the heating or cooling process, and the heating or cooling rate is increased.

Description

Polymerization reaction kettle

Technical Field

The utility model relates to a chemical industry equipment technical field, specifically speaking is about a polymerization cauldron that can be used to occasions such as laboratory.

Background

The high molecular polymerization reaction is to add monomers into a polymerization reaction kettle and then control the reaction conditions to carry out polymerization reaction. In the polymerization reaction process, the temperature needs to be raised to induce the reaction at the beginning, the heat is released quickly after the reaction begins, a large amount of heat is generated, and the excessive heat needs to be transferred quickly, so that the polymerization reaction temperature is controlled well, and the normal operation of the polymerization reaction is ensured.

In general, the polymerization reaction generates a large amount of heat in the polymerization initiation stage, and in the prior art, the heat is exchanged by low-temperature water through a jacket outside the reaction kettle, so that the temperature reduction efficiency is slow. At present, a polymerization reaction kettle for a laboratory is usually a double-layer glass reaction kettle, and an interlayer can be filled with different cold and heat source media for heating or cooling circulation. In the heating and temperature rising process, the surface contacted with the air can bring heat loss, the heating rate is reduced, and meanwhile, the energy is wasted.

There is therefore a need for improvement.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings and drawbacks of the prior art polymerization reactors, the present invention provides an improved polymerization reactor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a polymerization reaction kettle comprises a kettle body and a heat insulation layer arranged on the outer side of the kettle body, wherein a heat exchange medium outlet is arranged above the heat insulation layer, the polymerization reaction kettle is provided with a stirring device, a stirring shaft of the stirring device extends into the kettle body, two layers of stirring paddles are arranged below the stirring device, and a heat exchange medium circulating pipe is arranged between the two layers of stirring paddles;

the heat exchange medium circulating pipe is wound in a regular triangle shape, the inlet end and the outlet end of the heat exchange medium circulating pipe are adjacently arranged on one corner of the circulating pipe wound in the regular triangle shape, the inlet end is close to the inner wall of the kettle body and penetrates out of the upper sealing cover of the kettle body upwards, and the outlet end penetrates through the kettle body downwards and enters into an interlayer between the kettle body and the heat insulation layer.

According to the utility model discloses, the position department that corresponds roughly to be regular triangle around every angle of the circulating pipe of establishing on the inner wall of the cauldron body is equipped with the mounting for be roughly to be regular triangle around the circulating pipe of establishing and be fixed in the suitable position between the two-layer stirring rake.

According to the utility model discloses, correspond to on the inner wall of the cauldron body the position of entrance point pipeline section and the export end pipeline section of circulating pipe is equipped with the mounting for fix import end pipeline section and export end pipeline section on the internal position of pressing close to cauldron body inner wall of cauldron.

According to the utility model discloses a preferred embodiment, the lower floor's stirring rake of two-layer stirring rake is equipped with three stirring paddle leaf, according to 120 interval evenly distributed.

Preferably, the length of each blade is slightly smaller than the distance from the heat exchange medium circulating pipe at each corner wound by a regular triangle to the center of the regular triangle.

Furthermore, the stirring paddle of the upper layer of stirring paddle is arranged the same as the lower layer of stirring paddle.

The utility model discloses a polymerization kettle has following beneficial effect:

1. the heat exchange medium circulating pipe can realize rapid heat exchange, and is favorable for improving the heating or cooling rate.

2. The heat preservation can effectively reduce the loss that heat and air exchange caused in heating or cooling process, promotes heating or cooling rate.

3. The stirring paddle with the two layers of the three-blade stirring blades can well stir liquid, so that the solution is uniform, and meanwhile, the heat transfer is more uniform.

Drawings

FIG. 1 is a schematic cross-sectional view of a polymerization reactor according to the present invention.

FIG. 2 is a plan view of a heat transfer medium circulation pipe between two layers of stirring paddles.

FIG. 3 is a plan view of the lower stirring blade.

Description of the figure numbers:

10-kettle body; 11-a stirring shaft; 12-a stirring paddle; 20-a heat-insulating layer; 21-heat exchange medium outlet; 30-heat exchange medium circulation pipe; 31-inlet end of circulation tube; 32-circulation tube outlet end; 40-interlayer; 120-stirring blade.

Detailed Description

The polymerization reactor of the present invention will be described in further detail with reference to the accompanying drawings by way of specific examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.

In the context of the present specification, "regular triangle" means a heat exchange medium circulation pipe wound in a substantially regular triangle; correspondingly, the angle of the regular triangle refers to the position of the heat exchange medium circulating pipe which is wound by the regular triangle approximately and corresponds to any one or more of the three angles of the regular triangle.

As shown in fig. 1, the polymerization reactor of the present invention includes a reactor body 10 and a heat insulating layer 20 disposed outside the reactor body 10, wherein the heat insulating layer 20 is provided with a heat exchange medium outlet 21 at the upper part, the polymerization reactor is provided with a stirring device (not shown in the figure), a stirring shaft 11 of the polymerization reactor extends into the reactor body 10 and is provided with two layers of stirring paddles 12 at the lower part, and a heat exchange medium circulating pipe 30 is disposed between the two layers of stirring paddles 12.

As shown in fig. 2, the heat exchange medium circulating pipe 30 is wound in a regular triangle, the inlet end 31 and the outlet end 32 of the heat exchange medium circulating pipe are adjacently arranged at one corner of the regular triangle, the inlet end 31 is close to the inner wall of the kettle body and upwardly penetrates through the upper cover of the kettle body 10, and the outlet end 32 downwardly penetrates through the kettle body 10 and enters into the interlayer 40 between the kettle body 10 and the insulating layer 20. In this embodiment, for the section of the heat exchange medium circulation pipe 30 between the two layers of stirring paddles 12, the circulation pipe 30 can be fixed at a desired position by arranging a fixing member (not shown in the figure) at a position corresponding to each corner of the regular triangle on the inner wall of the kettle body 10; the upward inlet end 31 and the downward outlet end 32 can be fixed by one or more fixing members arranged at corresponding positions on the inner wall of the kettle body 10. As for the form of the fixing member, reference may be made to a form of a fixing member commonly used in the art, for example, a baffle plate or the like provided in the reaction tank, which will not be described in detail herein.

As shown in fig. 3, the lower stirring paddle 12 is provided with three stirring paddles 120, which are uniformly distributed at intervals of 120 °. Since the heat transfer medium circulation pipes 30 are wound in a regular triangle, the length D1 of each blade 120 is designed to be slightly smaller than the distance D2 from the heat transfer medium circulation pipe at each corner of the regular triangle to the center (the stirring shaft 11), so that when the stirring paddle 12 needs to be taken out, difficulty in taking out the stirring paddle is avoided due to the arrangement of the heat transfer medium circulation pipes 30.

As for the upper paddle 12, it is obvious to those skilled in the art that it may be provided in the same manner as the lower paddle, or may be provided in other common forms different from the lower paddle as needed.

When the polymerization reaction kettle of the utility model is used, when heating or cooling is needed, a heat exchange medium enters from the inlet end 31 of the circulating pipe 30, flows through the circulating pipe section between the two layers of stirring paddles 12, is left from the outlet end 32, enters the interlayer 40, and after the medium in the interlayer 40 is full, the medium in the circulating pipe 30 and the medium in the interlayer 40 are mixed with each other to heat or cool reactants in the kettle, so that the heating or cooling efficiency can be better improved; the stirring speed is improved by the stirring device with the double-layer stirring paddle 12, the stirring paddle 12 is respectively stirred at the upper layer surface and the lower layer surface of the circulating pipe 30, so that the material after heat exchange with the circulating pipe 30 can be rapidly stirred, the material in the kettle body is uniform, and the phenomenon that the local temperature is too high or too low can not be caused. According to the specific design of the stirring paddles 12 and the heat exchange medium circulating pipes 30 in the shape of the regular triangle, the stirring paddles 12 can be easily taken out of the kettle body 10 for replacing or cleaning the paddles without colliding with the circulating pipes 30. The outer heat preservation 20 of the cauldron body 10 can effectually prevent that the medium in the intermediate layer 40 carries out thermal propagation with the air, avoids thermal waste, has practiced thrift the energy, also can promote the heating or the cooling efficiency to the material in the cauldron body 10 simultaneously.

Claims

1. A polymerization reaction kettle is characterized by comprising a kettle body and a heat insulation layer arranged on the outer side of the kettle body, wherein a heat exchange medium outlet is formed in the upper part of the heat insulation layer;

the heat exchange medium circulating pipe is wound in a regular triangle shape, the inlet end and the outlet end of the heat exchange medium circulating pipe are adjacently arranged on one corner of the regular triangle, the inlet end is close to the inner wall of the kettle body and upwards penetrates out of the upper sealing cover of the kettle body, and the outlet end downwards penetrates through the kettle body and enters into an interlayer between the kettle body and the heat insulation layer.

2. The polymerization reactor as claimed in claim 1, wherein the inner wall of the reactor body is provided with a fixing member at a position corresponding to each corner of the circulating pipe wound in a substantially regular triangle shape, for fixing the circulating pipe wound in a substantially regular triangle shape at a proper position between the two layers of the stirring paddles.

3. The polymerization reactor according to claim 1, wherein the inner wall of the reactor body is provided with fixing members at positions corresponding to the inlet end pipe section and the outlet end pipe section of the circulation pipe, for fixing the inlet end pipe section and the outlet end pipe section at positions close to the inner wall of the reactor body.

4. The polymerization reaction kettle according to claim 1, wherein the lower layer stirring paddle of the two layers of stirring paddles is provided with three stirring paddles which are uniformly distributed at intervals of 120 degrees.

5. The polymerization reactor of claim 4, wherein the length of each paddle is slightly less than the distance from the heat transfer medium circulation tube at each corner of the regular triangle to the center of the regular triangle.

6. The polymerization reaction kettle according to claim 4, wherein the stirring blade of the upper layer stirring blade is arranged the same as that of the lower layer stirring blade.