CN215693950U

CN215693950U - Polyether reaction device

Info

Publication number: CN215693950U
Application number: CN202121695667.XU
Authority: CN
Inventors: 李跃容; 陈展华; 郭元强; 方云辉
Original assignee: Leizhi Chemical Fujian Co ltd
Current assignee: Leizhi Chemical Fujian Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-02-01
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to the field of chemical reaction devices, in particular to a polyether reaction device, which comprises a reaction kettle body, a stirrer and a first heat exchanger, wherein the reaction kettle body is provided with a reaction kettle body; the stirrer is arranged inside the reaction kettle body; the first heat exchanger comprises a hollow ring cylinder, and the stirrer penetrates through a through hole formed in the inner wall of the hollow ring cylinder; the first heat exchanger also comprises a plurality of heat exchange rings arranged on the inner wall of the hollow ring cylinder, and the axial direction of each heat exchange ring is parallel to the rotation axis of the stirrer. Compared with the prior art, the utility model increases the contact area with the substances in the reaction kettle body through the multilayer heat exchange ring structure of the first heat exchanger, thereby having higher heat exchange efficiency. And because the axial direction of the heat exchange ring is parallel to the rotation axis of the stirrer instead of the multilayer spiral pipeline in the prior art, and the through hole of the hollow ring cylinder has larger space, the damping for the stirrer to stir the reactant is lower, so that the stirring energy consumption is reduced.

Description

Polyether reaction device

Technical Field

The utility model relates to the field of chemical reaction devices, in particular to a polyether reaction device.

Background

The polyether type polycarboxylic acid high-performance water reducer is mainly prepared by a polyether macromonomer and an unsaturated carboxylic acid small monomer through copolymerization reaction under the action of an initiator, a chain transfer agent and other auxiliaries in one step, is convenient to produce, has outstanding water reducing performance, and becomes a mainstream product in the market at present.

The heat exchange device of the main equipment for producing polyether comprises coil heat exchange and jacket heat exchange. The coil pipe is directly contacted with the materials in the device and is a main cooling part for heat exchange of the reaction device; the jacket is a main heating or cooling part, and the operation method which needs to repeatedly introduce cooling water and steam into the jacket has great damage to equipment and great potential safety hazard. Patent publication No. CN 202893350U's patent has announced a polyether reation kettle, improve heat exchange capacity through the multilayer coil pipe, the above-mentioned problem has been solved to a certain extent, but in practical application, because its multilayer and complicated tubular structure at the internal portion of cauldron, cause the passageway of cooling water to increase in the pipeline, though can strengthen heat transfer effect, but its multilayer tubular structure causes the influence to the stirring of the internal portion's of cauldron reactant, the motion damping of inside reactant with the stirring has been increased, and then reduce stirring effect, influence the reaction of reactant.

In conclusion, the polyether reaction device in the prior art has the problems of poor heat exchange efficiency and stirring inhibition, and needs to be solved.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model provides a polyether reaction device, which is characterized in that: comprises a reaction kettle body, a stirrer and a first heat exchanger;

the stirrer is arranged inside the reaction kettle body;

the first heat exchanger comprises a hollow ring cylinder, and the stirrer penetrates through a through hole formed in the inner wall of the hollow ring cylinder;

the first heat exchanger also comprises a plurality of heat exchange rings arranged on the inner wall of the hollow ring cylinder, and the axial direction of each heat exchange ring is parallel to the rotation axis of the stirrer.

In one embodiment, the shape of the heat exchange ring includes a plate-shaped hollow circular ring, and a plurality of the heat exchange rings are arranged at intervals along the axial direction of the hollow ring cylinder.

In an embodiment, the first heat exchanger further comprises a water outlet port arranged at the top of the hollow annular cylinder, the water outlet port is communicated with a cavity inside the hollow annular cylinder, and the axial direction of the water outlet port is perpendicular to the axial direction of the hollow annular cylinder and the radial direction of the hollow annular cylinder;

the first heat exchanger further comprises a water inlet interface arranged at the bottom of the hollow annular cylinder, the water inlet interface is communicated with a cavity inside the hollow annular cylinder, and the axial direction of the water inlet interface is perpendicular to the axial direction of the hollow annular cylinder and the radial direction of the hollow annular cylinder.

In an embodiment, at an axial view angle along the hollow cylinder, respective axial directions of the water outlet port and the water inlet port are parallel.

In an embodiment, the water outlet and the water inlet are distributed on a circular ring projected by an axial viewing angle of the hollow cylinder in a centrosymmetric manner.

In one embodiment, one end of the water outlet interface, which is far away from the hollow ring cylinder, is provided with an elbow structure;

the reaction device also comprises a water outlet pipe, and the water outlet pipe is connected with the water outlet interface through the elbow structure.

In one embodiment, one end of the water inlet interface, which is far away from the hollow ring cylinder, is provided with an elbow structure;

the reaction device also comprises a water inlet pipe, and the water inlet pipe is connected with the water inlet interface through the elbow structure.

In one embodiment, the reactor further comprises a second heat exchanger, and the second heat exchanger is wrapped on the outer wall of the reaction kettle body.

In one embodiment, the reactor further comprises a mounting frame and a power device which are arranged on the reaction kettle body, and the power device is mounted on the reaction kettle body through the mounting frame.

In one embodiment, the power device comprises a motor and a speed reducer, and the motor is connected with one end of the stirrer through the speed reducer and is used for driving the stirrer to rotate.

Based on the above, compared with the prior art, the polyether reaction device provided by the utility model has the advantages that the contact area of the polyether reaction device and substances in the reaction kettle body is increased through the multilayer heat exchange ring structure of the first heat exchanger, so that the polyether reaction device has higher heat exchange efficiency. And because the axial direction of the heat exchange ring is parallel to the rotation axis of the stirrer instead of the multilayer spiral pipeline in the prior art, and the through hole of the hollow ring cylinder has larger space, the damping for the stirrer to stir the reactant is lower, so that the stirring energy consumption is reduced.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

FIG. 1 is a schematic sectional view of a polyether reaction apparatus according to the present invention;

FIG. 2 is a schematic top view of a first heat exchanger according to an embodiment;

FIG. 3 is a schematic bottom view of a first heat exchanger according to an embodiment.

Reference numerals:

10 reaction kettle body 20 stirrer 30 first heat exchanger

31 hollow ring cylinder 32 heat exchange ring 33 water outlet interface

34 water inlet interface 40 second heat exchanger 11 mounting rack

12 power unit 12a motor 12b speed reducer

50 outlet pipe 60 inlet pipe

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be noted that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and are not to be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As shown in fig. 1, the polyether reaction apparatus provided by the present invention comprises a reaction vessel body 10, a stirrer 20 and a first heat exchanger 30; in the present embodiment, the reaction vessel body 10 having a cylindrical main body shape is described as an example, but it is to be understood that the shape of the reaction vessel body 10 is not limited thereto. The stirrer 20 is arranged inside the reaction kettle body 10, the stirrer 20 is a shaft part with stirring blades, in the embodiment, the stirrer 20 extends from the top of the reaction kettle body 10 to a position close to the bottom, and the power device 12 arranged on the mounting rack 11 on the reaction kettle body 10 drives the stirrer 20 to rotate and stir the reaction materials; the first heat exchanger 30 includes a hollow cylinder 31, the hollow cylinder 31 can be understood as a thick-walled tube with a tube wall drawn out, as shown in fig. 1, a cavity is provided between the inner wall and the outer wall of the hollow cylinder 31, preferably, the outer diameter of the hollow cylinder 31 is close to the inner diameter of the reaction kettle body 10 so that the size of the hollow cylinder 31 is as large as possible to provide a wide stirring space, and the hollow cylinder 31 can be fixed inside the reaction kettle body 10 or movably arranged inside the reaction kettle body; the stirrer 20 penetrates through a through hole formed in the inner wall of the hollow annular cylinder 31;

as shown in fig. 1-3, the first heat exchanger 30 further includes a plurality of heat exchange rings 32 disposed on the inner wall of the hollow ring cylinder 31, the heat exchange rings 32 are hollow ring-shaped objects, such as hollow plate-shaped ring-shaped objects in the present embodiment, and the axial direction of the heat exchange rings 32 is parallel to the rotation axis of the stirrer 20. A plurality of heat exchange rings are arranged at intervals along the axial direction of the hollow ring cylinder 31.

In the embodiment, the contact area of the multi-layer heat exchange ring structure of the first heat exchanger and the substance in the reaction kettle body is increased, so that the heat exchange efficiency is higher. And because the axial direction of the heat exchange ring is parallel to the rotation axis of the stirrer instead of the multilayer spiral pipeline in the prior art, and the through hole of the hollow ring cylinder has larger space, the damping for the stirrer to stir the reactant is lower, so that the stirring energy consumption is reduced.

Preferably, as shown in fig. 2 and 3, the first heat exchanger 30 further includes a water outlet port 33 disposed at the top of the hollow cylinder 31, the water outlet port 33 is communicated with the cavity inside the hollow cylinder 31, and the axial direction of the water outlet port 33 is perpendicular to the axial direction of the hollow cylinder 31 and the radial direction of the hollow cylinder 31; the first heat exchanger 30 further comprises a water inlet port 34 arranged at the bottom of the hollow annular cylinder 31, the water inlet port 34 is communicated with a cavity inside the hollow annular cylinder 31, and the axial direction of the water inlet port 34 is perpendicular to the axial direction of the hollow annular cylinder 31 and the radial direction of the hollow annular cylinder 31. The water inlet port 34 and the water outlet port 33 are formed in the tangential direction with the circular ring of the hollow circular cylinder 31 through the structure, so that the obstruction of water inlet flow and water outlet flow is reduced.

Preferably, the respective axial directions of the water outlet port 33 and the water inlet port 34 are parallel to each other in the axial view along the hollow cylinder 31. On the ring projected by the axial visual angle of the hollow cylinder 31, the water outlet 33 and the water inlet 34 are distributed in central symmetry.

Preferably, one end of the water outlet port 33 away from the hollow ring cylinder 31 has an elbow structure; the reaction device further comprises a water outlet pipe 50, and the water outlet pipe 50 is connected with the water outlet interface 33 through the elbow structure. One end of the water inlet interface 34, which is far away from the hollow ring cylinder 31, is provided with an elbow structure; the reaction device further comprises a water inlet pipe 60, and the water inlet pipe 60 is connected with the water inlet interface 34 through an elbow structure. Because the wall of the hollow ring cylinder 31 is closer to the inner wall of the reaction kettle body 10, the water outlet interface 33 and the water inlet interface 34 of the elbow structure are adopted to avoid obstructing the tangential inflow and outflow of the inlet and outlet water.

Preferably, the present embodiment further includes a second heat exchanger 40, the second heat exchanger 40 is wrapped on the outer wall of the reaction kettle body 10, in the present embodiment, the second heat exchanger 40 is, for example, a jacket, and when the temperature needs to be raised, the cooling water valve is closed, and steam is introduced into the jacket.

Specifically, the power device 12 includes a motor 12a and a speed reducer 12b, and the motor 12a is connected to one end of the agitator 20 through the speed reducer 12b for driving the agitator 20 to rotate.

When the reaction kettle works, the motor 12a drives the speed reducer 12b to reduce the speed and then drives the stirrer 20 to stir the reactant in the reaction kettle body 10, when the reactant in the reaction kettle body 10 needs to be cooled, cooling water is supplied through the water inlet pipe 60 and flows into the hollow annular cylinder 31 after being guided by the water inlet interface 34, then cooling water flow is formed in the hollow annular cylinder 31 under the guiding action of the water outlet interface 33 and the water outlet pipe 50, because the directions of the water inlet interface 34 and the water outlet interface 33 face the annular tangential direction of the hollow annular cylinder 31, the cooling water rises in the hollow annular cylinder 31 in a spiral motion manner, further the cooling water is fully contacted with the hollow annular cylinder 31 and the heat exchange 32 rings on the hollow annular cylinder, meanwhile, the contact area of the heat exchange rings 32 with the reactant in the reaction kettle body 10 is increased due to the multi-sheet structure of the heat exchange rings 32, and the resistance of circumferential motion is small because the hollow volume in the hollow annular cylinder 31 is larger and the heat exchange rings 32 are distributed in a non-spiral manner, and thus less agitation damping, while the tubular structure of the hollow cylinder 31 provides less resistance to rotation of the reactant by the agitator 20 than prior art multilayer tubular structures.

In summary, compared with the prior art, the polyether reaction device provided by the utility model has the advantages that the contact area between the polyether reaction device and substances in the reaction kettle body is increased through the multilayer heat exchange ring structure of the first heat exchanger, so that the polyether reaction device has higher heat exchange efficiency. And because the axial direction of the heat exchange ring is parallel to the rotation axis of the stirrer instead of the multilayer spiral pipeline in the prior art, and the through hole of the hollow ring cylinder has larger space, the damping for the stirrer to stir the reactant is lower, so that the stirring energy consumption is reduced.

In addition, it will be appreciated by those skilled in the art that, although there may be many problems with the prior art, each embodiment or aspect of the present invention may be improved only in one or several respects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Although terms such as reaction vessel body, stirrer, first heat exchanger, hollow ring cylinder, heat exchange ring, water outlet port, water inlet port, second heat exchanger, mounting frame, power plant, motor, reducer, water outlet pipe and water inlet pipe are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A polyether reaction device is characterized in that: comprises a reaction kettle body (10), a stirrer (20) and a first heat exchanger (30);

the stirrer (20) is arranged inside the reaction kettle body (10);

the first heat exchanger (30) comprises a hollow ring cylinder (31), and the stirrer (20) penetrates through a through hole formed in the inner wall of the hollow ring cylinder (31);

the first heat exchanger (30) further comprises a plurality of heat exchange rings (32) arranged on the inner wall of the hollow ring cylinder (31), and the axial direction of the heat exchange rings (32) is parallel to the rotation axis of the stirrer (20).

2. The polyether reaction apparatus of claim 1, wherein: the shape of the heat exchange rings (32) comprises a plate-shaped hollow circular ring shape, and a plurality of the heat exchange rings (32) are arranged at intervals along the axial direction of the hollow ring cylinder (31).

3. The polyether reaction apparatus of claim 1, wherein: the first heat exchanger (30) further comprises a water outlet port (33) arranged at the top of the hollow ring cylinder (31), the water outlet port (33) is communicated with a cavity inside the hollow ring cylinder (31), and the axial direction of the water outlet port (33) is perpendicular to the axial direction of the hollow ring cylinder (31) and the radial direction of the hollow ring cylinder (31);

the first heat exchanger (30) further comprises a water inlet interface (34) arranged at the bottom of the hollow ring cylinder (31), the water inlet interface (34) is communicated with a cavity inside the hollow ring cylinder (31), and the axial direction of the water inlet interface (34) is perpendicular to the axial direction of the hollow ring cylinder (31) and the radial direction of the hollow ring cylinder (31).

4. The polyether reaction apparatus of claim 3, wherein: at the axial visual angle along the hollow ring cylinder (31), the water outlet interface (33) and the water inlet interface (34) are parallel to each other in the axial direction.

5. The polyether reaction apparatus of claim 4, wherein: on a circular ring projected by an axial visual angle of the hollow ring cylinder (31), the water outlet interface (33) and the water inlet interface (34) are distributed in a centrosymmetric manner.

6. The polyether reaction apparatus of any one of claims 3-5, wherein: one end of the water outlet interface (33) far away from the hollow ring cylinder (31) is provided with an elbow structure;

the reaction device also comprises a water outlet pipe (50), and the water outlet pipe (50) is connected with the water outlet interface (33) through the elbow structure.

7. The polyether reaction apparatus of any one of claims 3-5, wherein: one end of the water inlet interface (34) far away from the hollow ring cylinder (31) is provided with an elbow structure;

the reaction device also comprises a water inlet pipe (60), and the water inlet pipe (60) is connected with the water inlet interface (34) through the elbow structure.

8. The polyether reaction apparatus of claim 1, wherein: the reaction kettle further comprises a second heat exchanger (40), and the second heat exchanger (40) is wrapped on the outer wall of the reaction kettle body (10).

9. The polyether reaction apparatus of claim 1, wherein: still including locating mounting bracket (11) and power device (12) on the reation kettle body (10), power device (12) pass through mounting bracket (11) install in on the reation kettle body (10).

10. The polyether reaction apparatus of claim 9, wherein: the power device (12) comprises a motor (12a) and a speed reducer (12b), wherein the motor (12a) is connected with one end of the stirrer (20) through the speed reducer (12b) and is used for driving the stirrer (20) to rotate.