CN219252610U

CN219252610U - Propylene polymerization kettle with heat dissipation and temperature measurement functions

Info

Publication number: CN219252610U
Application number: CN202223343428.5U
Authority: CN
Inventors: 石淼; 丁峰; 郭庆; 胡晓秋
Original assignee: Wuxi Lima Chemical Machinery Co ltd
Current assignee: Wuxi Lima Chemical Machinery Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-06-27
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to a propylene polymerization kettle with a heat dissipation and temperature measurement function, which comprises a shell, a top cover, a stirring shaft and an inner cooling pipe, wherein the stirring shaft is arranged in the shell; the top cover is provided with a temperature measuring joint, a temperature measuring pipe is arranged in the temperature measuring joint, and a temperature measuring assembly is arranged in the temperature measuring pipe. The inner cooling pipes are uniformly distributed on the inner circumference of the shell, so that heat exchange in the shell is uniform; the thermocouples with three lengths are additionally arranged in the temperature measuring pipe, so that the integrity of the shell is improved, and the problem that a side temperature measuring joint sleeve can cause weld cracking due to fatigue stress is avoided.

Description

Propylene polymerization kettle with heat dissipation and temperature measurement functions

Technical Field

The utility model belongs to the technical field of propylene polymerization kettles, and relates to a propylene polymerization kettle with a heat dissipation and temperature measurement function.

Background

The propylene polymerization kettle is chemical equipment for preparing propylene, and is provided with a stirring system, heat can be emitted in the propylene polymerization reaction process, and for bulk polymerization, as the propylene concentration is high, the reaction is intense, so that the heat emission control is the key for controlling the reaction process, and for controlling the reaction temperature, an upper temperature measuring point, a middle temperature measuring point and a lower temperature measuring point are usually arranged in the equipment; however, traditional inside heat transfer structure sets up U type cooling tube in the polymeric kettle, has seted up well, lower part temperature measurement joint on the casing of U type cooling tube side, is provided with the thermocouple in the temperature measurement joint and realizes the temperature measurement function, but this structure U type cooling tube distributes unevenly, leads to the heat transfer inhomogeneous, and the temperature measurement joint sleeve pipe is because of the stress of heating up and cooling, and the welding seam fracture easily takes place to reveal, influences the result of use, still has the potential safety hazard.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, solve the problem that a temperature measuring joint sleeve is easy to crack, and provide a propylene polymerization kettle with a heat dissipation and temperature measurement function.

In order to achieve the above purpose, the following technical scheme is adopted:

the utility model provides a propylene polymeric kettle with heat dissipation temperature measurement function, includes casing, top cap, (mixing) shaft, interior cold pipe, be provided with the (mixing) shaft in the casing, the upper end of casing is provided with the top cap, is provided with also interior cold pipe, characterized by on the inside wall of casing: the circumference of the inner cooling pipe is uniformly distributed on the inner side wall of the shell, the inner cooling pipe comprises a first heat exchange pipe and a second heat exchange pipe, the lower ends of the first heat exchange pipe and the second heat exchange pipe are respectively provided with a reducing joint, and the two reducing joints are connected by a connecting bent pipe; the top cover is provided with a temperature measuring joint, a temperature measuring pipe is arranged in the temperature measuring joint, and a temperature measuring assembly is arranged in the temperature measuring pipe.

Preferably, a pipe clamp is arranged on the inner wall of the shell, and the inner cooling pipe is connected with the shell by the pipe clamp.

Preferably, the lower end of the temperature measuring tube is fixed by a guide bracket, and the guide bracket is arranged on the inner wall of the shell.

Preferably, the temperature measuring assembly comprises 3 thermocouples with different lengths, and the upper ends of the thermocouples are connected to the temperature measuring connectors in a threaded mode.

Preferably, the number of the inner cooling pipes is 4.

Preferably, the upper ends of the first heat exchange tube and the second heat exchange tube are respectively provided with a heat exchange port, and the shell is provided with a connecting tube connected with the heat exchange ports.

Preferably, the first heat exchange tube and the second heat exchange tube are uniformly distributed in the shell.

Compared with the prior art, the utility model has the following advantages:

the inner cooling pipes are uniformly distributed on the inner circumference of the shell, so that the heat exchange inside the shell is uniform and the effect is better; the temperature measuring joint on the side face of the shell is removed, thermocouples with three lengths are additionally arranged in the temperature measuring tube, the integrity of the shell can be improved, and the problem that a sleeve of the side face temperature measuring joint can cause weld joint cracking due to fatigue stress is avoided.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

FIG. 2 is a schematic view of an inner cooling tube according to the present utility model.

FIG. 3 is a schematic diagram of a temperature sensing tube and a temperature sensing assembly according to the present utility model.

In the figure: 1. a housing; 2. a top cover; 3. an inner cooling tube; 4. a temperature measuring tube; 5. a first heat exchange tube; 6. a second heat exchange tube; 7. a reducing joint; 8. a connecting bent pipe; 9. a stirring shaft; 10. a temperature measuring joint; 11. the connecting pipe, 12, the pipe clamp, 13 and the guide bracket; 14. a temperature measuring assembly; 15. a heat exchange port; 16 thermocouples.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

As shown in fig. 1-3, the propylene polymerization kettle with the heat dissipation and temperature measurement functions comprises a shell 1, a top cover 2, a stirring shaft 9 and an inner cooling pipe 3, wherein the stirring shaft 9 is arranged in the shell 1, the top cover 2 is arranged at the upper end of the shell 1, and the inner cooling pipe 3 is also arranged on the inner side wall of the shell 1;

the inner cooling pipes 3 are uniformly distributed on the inner side wall of the shell 1 in circumference, and the inner cooling pipes 3 are uniformly distributed in circumference, so that the heat exchange effect inside the shell 1 is more uniform and the effect is better.

The inner cooling pipe 3 comprises a first heat exchange pipe 5 and a second heat exchange pipe 6, the lower ends of the first heat exchange pipe 5 and the second heat exchange pipe 6 are respectively provided with a reducing joint 7, and the two reducing joints 7 are connected by a connecting bent pipe 8; the reducing joint 7 reduces the occupied space and prevents the stirring sheet on the stirring shaft from touching the inner cooling pipe;

the top cover 2 is provided with a temperature measuring joint 10, a temperature measuring pipe 4 is arranged in the temperature measuring joint 10, a temperature measuring component 14 is arranged in the temperature measuring pipe 4, and the temperature measuring component 14 in the temperature measuring pipe 4 can realize a temperature measuring function.

Further, a pipe clamp 12 is arranged on the inner wall of the shell 1, the inner cooling pipe 3 is connected with the shell 1 by the pipe clamp 12, and the pipe clamp 12 ensures that the inner cooling pipe 3 is stably installed.

Further, the lower end of the temperature measuring tube 4 is fixed by a guiding bracket 13, the guiding bracket 13 is mounted on the inner wall of the shell 1, and the guiding bracket 13 enables the temperature measuring tube 4 to be vertical and stably mounted in the shell 1.

Further, the temperature measuring assembly 14 comprises 3 thermocouples 16 with unequal lengths, the thermocouples 16 with three lengths are installed in the temperature measuring tube, and the upper ends of the thermocouples 16 are screwed on the temperature measuring joint 10; the temperature test requirements of the upper, middle and lower three height positions in the shell can be met by the 3 thermocouples 16 with unequal lengths, the side temperature measuring joints are canceled, and the integrity of the shell 1 is improved.

Further, the number of the inner cooling pipes 3 is 4, and the 4 inner cooling pipes 3 ensure stable heat exchange effect in the shell 1.

Further, heat exchange ports 15 are respectively arranged at the upper ends of the first heat exchange tube 5 and the second heat exchange tube 6, and a connecting tube 11 connected with the heat exchange ports 15 is arranged on the shell 1.

Further, the first heat exchange tube 5 and the second heat exchange tube 6 are uniformly distributed in the casing 1.

Working principle: the inner cooling pipes 3 are uniformly distributed in the shell 1, and the heat exchange ports 15 on the first heat exchange pipe 5 and the second heat exchange pipe 6 are connected with an external heat exchange pipeline by using the connecting pipe 11, so that the heat exchange function in the shell 1 is realized; the top cover 2 is provided with the temperature measuring joint 10, the temperature measuring assembly 14 is arranged in the temperature measuring joint 10, the temperature measuring assembly comprises three thermocouples 16 with unequal lengths, the testing requirements of different upper, middle and lower height positions inside the shell 1 are met, the requirement of arranging the temperature measuring joint on the side face of the shell 1 is avoided, the integrity of the shell 1 is improved, and the problem that a welding seam is cracked due to fatigue stress of a side face temperature measuring joint sleeve can be avoided.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

Claims

1. The utility model provides a propylene polymeric kettle with heat dissipation temperature measurement function, includes casing (1), top cap (2), (mixing) shaft (9), interior cold pipe (3), be provided with (mixing) shaft (9) in casing (1), the upper end of casing (1) is provided with top cap (2), is provided with interior cold pipe (3), characterized by on the inside wall of casing (1): the circumference of the inner cooling pipe (3) is uniformly distributed on the inner side wall of the shell (1), the inner cooling pipe (3) comprises a first heat exchange pipe (5) and a second heat exchange pipe (6), reducing joints (7) are respectively arranged at the lower ends of the first heat exchange pipe (5) and the second heat exchange pipe (6), and the two reducing joints (7) are connected by a connecting bent pipe (8); the temperature measuring connector (10) is arranged on the top cover (2), the temperature measuring tube (4) is arranged in the temperature measuring connector (10), and the temperature measuring assembly (14) is arranged in the temperature measuring tube (4).

2. The propylene polymerization kettle with the heat dissipation and temperature measurement functions according to claim 1, which is characterized in that: the inner wall of the shell (1) is provided with a pipe clamp (12), and the inner cooling pipe (3) is connected with the shell (1) by the pipe clamp (12).

3. The propylene polymerization kettle with the heat dissipation and temperature measurement functions according to claim 1, which is characterized in that: the lower end of the temperature measuring tube (4) is fixed by a guide bracket (13), and the guide bracket (13) is arranged on the inner wall of the shell (1).

4. The propylene polymerization kettle with the heat dissipation and temperature measurement functions according to claim 1, which is characterized in that: the temperature measuring assembly (14) comprises 3 thermocouples (16) with different lengths, and the upper ends of the thermocouples (16) are in threaded connection with the temperature measuring joint (10).

5. The propylene polymerization kettle with the heat dissipation and temperature measurement functions according to claim 1, which is characterized in that: the number of the inner cooling pipes (3) is 4.

6. The propylene polymerization kettle with the heat dissipation and temperature measurement functions according to claim 1, which is characterized in that: the upper ends of the first heat exchange tube (5) and the second heat exchange tube (6) are respectively provided with a heat exchange port (15), and the shell (1) is provided with a connecting tube (11) connected with the heat exchange ports (15).

7. The propylene polymerization kettle with the heat dissipation and temperature measurement functions as set forth in claim 6, wherein: the first heat exchange tube (5) and the second heat exchange tube (6) are uniformly distributed in the shell (1).