Polymerizing kettle with efficient heat exchange function

Abstract

The utility model relates to a polymerization kettle with an efficient heat exchange function, which comprises a kettle body, a stirring mechanism, a heat exchange interlayer and a discharge pipe arranged at the bottom of the kettle body, and is technically characterized in that a heat exchange box is fixed below the outer side of the kettle body by a support, and a heat exchange pipeline with a plurality of inflection points is arranged in the heat exchange box; the discharging pipe is provided with a branch, the tail end of the branch is connected with an inlet of the heat exchange pipeline through a flange plate, a lifting pump is fixed to the position, above the heat exchange box, of the outer side of the kettle body through a small support, an inlet pipeline of the lifting pump is connected with an outlet of the heat exchange pipeline through a flange plate, and a backflow pipe is fixed to the side of the top of the kettle body. An air cooling pipeline is arranged between the outer end of the backflow pipe and an outlet pipeline of the lifting pump, a plurality of air cooling fins are arranged on the outer wall of the air cooling pipeline at intervals, a cooling water outlet is formed in the top of the heat exchange box, and a cooling water inlet is formed in the bottom of the heat exchange box. The utility model solves the problem that the cooling efficiency of the existing polymerization kettle needs to be improved, obviously improves the heat exchange efficiency, ensures the stable operation of exothermic reaction, and prolongs the service life of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, and particularly relates to a polymerization kettle with an efficient heat exchange function. Background Art

[0002] The polymerization kettle is the main equipment for preparing high molecular compounds. Generally, it is a vertical cylindrical high-pressure kettle, which is internally provided with a stirring mechanism and has a jacket on the outer wall to introduce steam or cold water for heating or cooling to achieve the heat exchange effect. Among them, for exothermic reactions, the cooling method generally adopts jacket cooling and coil cooling in the kettle. However, for reactions with fast heat release, the cooling efficiency in the kettle still needs to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to provide a polymerization kettle with an efficient heat exchange function, which has a reasonable structure and reliable use, solves the problem that the cooling efficiency of the existing polymerization kettle needs to be improved, significantly improves the heat exchange efficiency, ensures the stable progress of exothermic reactions, and prolongs the service life of the equipment.

[0004] The technical solution of the utility model is as follows:

[0005] A polymerization kettle with an efficient heat exchange function includes a kettle body, a stirring mechanism arranged in the kettle body, and a heat exchange interlayer arranged on the outer wall of the kettle body. A discharge pipe is arranged at the bottom of the kettle body. The technical key point is that a heat exchange box is fixed by a support below the outer side of the kettle body. A heat exchange pipeline with multiple inflection points is arranged in the heat exchange box. The discharge pipe is provided with a branch, and the end of the branch is connected to the inlet of the heat exchange pipeline by a flange. A lifting pump is fixed by a small support above the heat exchange box on the outer side of the kettle body. The inlet pipeline of the lifting pump is connected to the outlet of the heat exchange pipeline by a flange. A return pipe is fixed on the side of the top of the kettle body. An air-cooling pipeline is arranged between the outer end of the return pipe and the outlet pipeline of the lifting pump. A plurality of air-cooling fins are arranged at intervals on the outer wall of the air-cooling pipeline. A cooling water outlet is arranged at the top of the heat exchange box, and a cooling water inlet is arranged at the bottom.

[0006] For the above-mentioned polymerization kettle with an efficient heat exchange function, the air-cooling fins are annular fins, and a plurality of through holes are uniformly arranged on the annular fins.

[0007] For the above-mentioned polymerization kettle with an efficient heat exchange function, the heat exchange pipeline is composed of a lower horizontal pipeline, an upper horizontal pipeline, a first vertical pipe connected between the upper and lower horizontal pipelines, and a second vertical pipe connected between the upper horizontal pipeline and the inlet pipeline of the lifting pump. The heat exchange pipeline is suspended in the cold water of the heat exchange box.

[0008] For the above-mentioned polymerization kettle with an efficient heat exchange function, a plurality of heat exchange fins extending longitudinally are arranged on the inner wall of the kettle body to further improve the heat exchange efficiency.

[0009] The above-mentioned polymerization kettle with high-efficiency heat exchange function is provided with a discharge valve at the lower end of the discharge pipe, and a circulation control valve is provided at the starting end of the branch.

[0010] The beneficial effects of the present utility model are as follows:

[0011] On the one hand, a heat exchange interlayer is used for cooling operation. On the other hand, a lifting pump is used to draw the mixed material from the branch, and after cooling through a heat exchange pipeline and cooling through an air-cooling pipeline, it returns to the kettle body, strengthening the cooling and heat exchange effect. At the same time, during the transmission of the material in the kettle along the pipeline, a pipeline stirring effect is achieved, which cooperates with the stirring mechanism in the kettle body to further increase the stirring effect. This kettle solves the problem that the cooling efficiency of the existing polymerization kettle needs to be improved, significantly improves the heat exchange efficiency, ensures the stable progress of the exothermic reaction, and prolongs the service life of the equipment. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model;

[0013] Figure 2 is Figure 1 a structural schematic diagram of the air-cooling pipeline in

[0014] Figure 3 is Figure 2 the bottom view of

[0015] In the figure: 1. Stirring motor, 2. Feed inlet, 3. Kettle body, 4. Heat exchange interlayer, 5. Stirring mechanism, 6. Return pipe, 7. Heat exchange fins, 8. Air-cooling pipeline, 9. Lifting pump, 10. Air-cooling fins, 11. Small bracket, 12. Cooling water outlet, 13. Heat exchange box, 14. Heat exchange pipeline, 15. Support, 16. Cooling water inlet, 17. Branch, 18. Circulation control valve, 19. Discharge pipe, 20. Discharge valve, 21. Through hole. Detailed Embodiments

[0016] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0017] As Figures 1 to 3 shown, the polymerization kettle with high-efficiency heat exchange function includes a kettle body 3, a stirring mechanism 5 arranged in the kettle body 3, and a heat exchange interlayer 4 arranged on the outer wall of the kettle body 3. A discharge pipe 19 is provided at the bottom of the kettle body 3, and a feed inlet 2 is provided at the top of the kettle body 3. A plurality of longitudinally extending heat exchange fins 7 are provided on the inner wall of the kettle body 3.

[0018] Wherein, a heat exchange box 13 is fixed below the outer side of the kettle body 3 by a support 15, and a heat exchange pipeline 14 with multiple inflection points is arranged in the heat exchange box 13. In this embodiment, a cooling water outlet 12 is provided at the top of the heat exchange box 13, and a cooling water inlet 16 is provided at the bottom. The discharge pipe 19 is provided with a branch 17, and the end of the branch 17 is connected to the inlet of the heat exchange pipeline 14 by a flange. Above the heat exchange box 13 on the outer side of the kettle body 3, a lifting pump 9 is fixed by a small support 11, and the inlet pipeline of the lifting pump 9 is connected to the outlet of the heat exchange pipeline 14 by a flange. A discharge valve 20 is provided at the lower end of the discharge pipe 19, and a circulation control valve 18 is provided at the starting end of the branch 17. The heat exchange pipeline 14 is composed of a lower horizontal pipeline, an upper horizontal pipeline, a first riser pipe connecting the upper and lower horizontal pipelines, and a second riser pipe connecting the upper horizontal pipeline and the inlet pipeline of the lifting pump 9. The heat exchange pipeline 14 is suspended in the cold water of the heat exchange box 13.

[0019] A reflux pipe 6 is fixed on the side of the top of the kettle body 3, and an air-cooling pipeline 8 is arranged between the outer end of the reflux pipe 6 and the outlet pipeline of the lifting pump 9. A plurality of air-cooling fins 10 are arranged at intervals on the outer wall of the air-cooling pipeline 8. In this embodiment, the air-cooling fins 10 are annular fins, and a plurality of through holes 21 are evenly arranged on the annular fins.

[0020] Working principle:

[0021] 1. During operation, start the stirring motor 1 to drive the stirring mechanism 5 in the kettle to rotate, so that the materials are evenly mixed and react.

[0022] 2. Start the lifting pump 9, and the mixed materials return to the kettle through the branch 17, the heat exchange pipeline 14, the air-cooling pipeline 8, and the reflux pipe 6, playing the role of external pipeline stirring.

[0023] 3. During the reaction process, the heat exchange interlayer 4 cools the materials in the kettle for the first time, the cold water in the heat exchange box 13 cools the materials in the heat exchange pipeline 14 for the second time, and the air-cooling pipeline 8 cools the materials in it for the third time, greatly improving the heat exchange efficiency and having the function of efficient heat exchange.

[0024] The above has described the embodiments of the present invention in detail, but the above content is only the preferred embodiments of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made within the scope of the creation of the present invention should still fall within the scope covered by this patent.

Claims

1. A polymerization kettle with high-efficiency heat exchange function, comprising a kettle body, a stirring mechanism arranged in the kettle body, and a heat exchange interlayer arranged on the outer wall of the kettle body. A discharge pipe is arranged at the bottom of the kettle body, and it is characterized in that: A heat exchange box is fixed below the outer side of the kettle body by means of a support. A heat exchange pipeline with multiple inflection points is arranged in the heat exchange box. The discharge pipe is provided with a branch, and the end of the branch is connected to the inlet of the heat exchange pipeline by means of a flange. A lifting pump is fixed above the heat exchange box on the outer side of the kettle body by means of a small support. The inlet pipeline of the lifting pump is connected to the outlet of the heat exchange pipeline by means of a flange. A reflux pipe is fixed on the side of the top of the kettle body. An air-cooling pipeline is arranged between the outer end of the reflux pipe and the outlet pipeline of the lifting pump. A plurality of air-cooling fins are arranged at intervals on the outer wall of the air-cooling pipeline. A cooling water outlet is arranged at the top of the heat exchange box, and a cooling water inlet is arranged at the bottom.

2. The polymerization kettle with high-efficiency heat exchange function according to claim 1, characterized in that: The air-cooling fins are annular fins, and a plurality of through holes are evenly arranged on the annular fins.

3. The polymerization kettle with high-efficiency heat exchange function according to claim 1, characterized in that: The heat exchange pipeline is composed of a lower horizontal pipeline, an upper horizontal pipeline, a first vertical pipe connected between the upper and lower horizontal pipelines, and a second vertical pipe connected between the upper horizontal pipeline and the inlet pipeline of the lifting pump. The heat exchange pipeline is suspended in the cold water of the heat exchange box.

4. The polymerization kettle with high-efficiency heat exchange function according to claim 1, characterized in that: A plurality of longitudinally extending heat exchange fins are arranged on the inner wall of the kettle body.

5. The polymerization kettle with high-efficiency heat exchange function according to claim 1, characterized in that: A discharge valve is arranged at the lower end of the discharge pipe, and a circulation control valve is arranged at the starting end of the branch.

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