CN219784717U - Polymeric kettle water retaining ring - Google Patents
Polymeric kettle water retaining ring Download PDFInfo
- Publication number
- CN219784717U CN219784717U CN202321325070.5U CN202321325070U CN219784717U CN 219784717 U CN219784717 U CN 219784717U CN 202321325070 U CN202321325070 U CN 202321325070U CN 219784717 U CN219784717 U CN 219784717U
- Authority
- CN
- China
- Prior art keywords
- kettle
- retaining ring
- water retaining
- backflow
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000010992 reflux Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
The utility model discloses a water retaining ring of a polymerization kettle, which comprises the polymerization kettle as a main body, wherein the upper end of the polymerization kettle is provided with a reaction kettle top cover, the reaction kettle top cover is provided with a backflow pipeline for inputting backflow liquid, and the backflow pipeline is internally provided with a water retaining ring for changing the track of the backflow liquid. The utility model has the problem that the traditional polymerization kettle in the prior art is easy to crack during working. The utility model has the advantages of long service life, strong working stability, simple structure, safety, reliability and the like.
Description
Technical Field
The utility model relates to the field of a structure of a polymerization kettle, in particular to a water retaining ring of the polymerization kettle.
Background
The PA6 polymerization process is dehydrated after the ring-opening reaction, water vapor is discharged out of the polymerization reaction kettle through a dehydration bubble cap tower, and monomers contained in the water vapor are sprayed by the dehydration bubble cap tower and flow back into the kettle.
Currently, a cooling system for a polymeric kettle is disclosed on the China patent network, and the publication number CN217527495U comprises the polymeric kettle, a sand filtration tank and a cooling tower which are connected by a process pipeline. According to the cooling system for the polymeric kettle, the jacket is arranged outside the polymeric kettle and is used as the main heat exchange component of the polymeric kettle, so that the polymeric kettle can be cooled greatly, the plurality of heat exchange sleeves are uniformly arranged inside the polymeric kettle and are used as the auxiliary heat exchange components, the polymeric kettle can be cooled slightly, and the heat exchange efficiency of cooling circulating water to the reaction kettle can be further improved. The jacket and the heat exchange sleeve are used together, so that the temperature in the polymerization kettle can be adjusted more finely, and the defects that the temperature of the polymerization kettle is not easy to control and the product quality is unstable due to the fact that the temperature of frozen brine is too low can be avoided by adopting cooling circulating water. In addition, due to the arrangement of the sand filter tank, the cooling circulating water can be filtered, the blocking condition of a water pipeline is reduced, and the stable operation of the system can be ensured.
According to the cooling system for the polymerization kettle, when the cooling system is in operation, the monomer reflux temperature is 128 ℃, the temperature in the kettle is 265 ℃, the temperature difference between the monomer reflux temperature and the kettle is large, the reaction kettle top cover and the kettle body are formed by welding metal materials, and as cold medium is refluxed for a long time, cracks appear at the welding part, and materials in the kettle leak to a heat conduction oil system under the action of the pressure difference, so that the production is seriously influenced.
Disclosure of Invention
The utility model aims to solve the problem that the traditional polymerization kettle in the prior art is easy to crack during working, and provides the water retaining ring of the polymerization kettle, which has the advantages of difficult crack occurrence, high stability during working and the like.
The utility model relates to a water retaining ring of a polymerization kettle, which comprises the polymerization kettle as a main body, wherein the upper end of the polymerization kettle is provided with a reaction kettle top cover, the reaction kettle top cover is provided with a backflow pipeline for inputting backflow liquid, and the backflow pipeline is internally provided with a water retaining ring for changing the track of the backflow liquid.
The length of the water retaining ring is longer than that of the return pipeline.
According to the utility model, the water blocking ring is added at the reflux position of the reaction kettle, so that reflux liquid does not flow back along the inner wall, but flows back into the polymerization kettle directly along the water blocking ring, thereby avoiding the corrosion of the reflux liquid to the welding seam between the top cover of the reaction kettle and the polymerization kettle, solving the influence of cold medium to the welding seam of equipment, improving the stability of the utility model in working and prolonging the service life of the utility model.
Preferably, the reaction kettle top cover is umbrella-shaped, and the lower end edge of the reaction kettle top cover is welded with the upper end surface edge of the polymerization kettle.
Preferably, the top cover of the reaction kettle is provided with a backflow port for inputting backflow liquid, and the edge of the lower end of the backflow pipeline is welded with the edge of the outer side of the backflow port.
Preferably, the inner wall of the return pipeline is longitudinally provided with a plurality of limit sliding grooves which are uniformly distributed and are used for sliding and installing the water blocking ring.
The length of the limiting chute is smaller than the length of the inner wall of the return pipeline.
Preferably, the upper end of the water retaining ring is provided with a diversion surface for diversion of return water, and the water retaining ring positioned at the periphery of the diversion surface is provided with a limit sliding block which is integrally formed with the water retaining ring and is in sliding connection with the limit sliding groove.
By utilizing the flow guide surface, the reflux liquid in the reflux pipeline can enter the reaction kettle along the flow guide surface and along the inner wall of the water retaining ring, so that the accumulated reflux liquid at the top of the water retaining ring is avoided.
Preferably, the top of the limit sliding block is provided with a guide sliding surface which is attached to the upper end of the guide sliding surface.
By utilizing the guide sliding surface, the reflux liquid in the limit sliding groove can enter the reaction kettle along the guide sliding surface and the guide surface and along the inner wall of the water retaining ring, so that the occurrence of accumulated reflux liquid in the limit sliding groove is avoided.
When the water retaining ring is installed, the limiting sliding blocks positioned on the periphery of the water retaining ring are respectively aligned with the limiting sliding grooves, then the water retaining ring is pushed into the backflow pipeline along the limiting sliding grooves until the limiting sliding blocks are propped against the bottoms of the limiting sliding grooves, and then the installation is completed, at the moment, the periphery of the water retaining ring is attached to the inner wall of the backflow pipeline, and the limiting sliding blocks are attached to the inner wall of the limiting sliding grooves.
The utility model has the following beneficial effects: long service life, high working stability, simple structure, safety and reliability.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the backflow pipeline provided with the water blocking ring.
Fig. 3 is a schematic cross-sectional view of the return line of the present utility model.
Fig. 4 is a top view of the water deflector ring of the present utility model.
The device comprises a polymerization kettle 1, a reaction kettle top cover 2, a water retaining ring 3, a backflow pipeline 4, a limiting chute 5, a limiting slide block 6, a flow guiding surface 7 and a flow guiding surface 8.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Examples: according to the embodiment of the utility model, a water retaining ring of a polymerization kettle is further described according to the accompanying drawings 1, 2, 3 and 4, and comprises a polymerization kettle 1 as a main body, a reaction kettle top cover 2 is arranged at the upper end of the polymerization kettle 1, a backflow pipeline 4 for inputting backflow liquid is arranged on the reaction kettle top cover 2, and a water retaining ring 3 for changing the track of the backflow liquid is arranged in the backflow pipeline 4.
The reaction kettle top cover 2 is umbrella-shaped, and the edge of the lower end of the reaction kettle top cover 2 is welded with the edge of the upper end face of the polymerization kettle 1.
The reaction kettle top cover 2 is provided with a backflow port for inputting backflow liquid, and the edge of the lower end of the backflow pipeline 4 is welded with the edge of the outer side of the backflow port.
The inner wall of the return pipeline 4 is longitudinally provided with a plurality of limit sliding grooves 5 which are uniformly distributed and are used for slidably mounting the water blocking ring 3.
The upper end of the water retaining ring 3 is provided with a diversion surface 7 for diversion of return water, and the water retaining ring 3 positioned at the periphery of the diversion surface 7 is provided with a limit sliding block 6 which is integrally formed with the water retaining ring 3 and is used for sliding connection with the limit sliding groove 5.
The top of the limit sliding block 6 is provided with a guide sliding surface 8 which is attached to the upper end of the guide surface 7.
The above embodiments are merely examples of the present utility model, but the present utility model is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present utility model.
Claims (6)
1. The utility model provides a polymeric kettle manger plate ring, includes polymeric kettle (1) as the main part, characterized by, polymeric kettle (1) upper end be equipped with reation kettle top cap (2), reation kettle top cap (2) on be equipped with reflux pipeline (4) that are used for the input reflux liquid, reflux pipeline (4) in be equipped with manger plate ring (3) that are used for changing the reflux liquid orbit.
2. The water blocking ring of the polymerization kettle according to claim 1, wherein the reaction kettle top cover (2) is umbrella-shaped, and the lower end edge of the reaction kettle top cover (2) is welded with the upper end surface edge of the polymerization kettle (1).
3. The water blocking ring of the polymerization kettle according to claim 1, wherein the reaction kettle top cover (2) is provided with a backflow port for inputting backflow liquid, and the lower end edge of the backflow pipeline (4) is welded with the outer side edge of the backflow port.
4. The water blocking ring of the polymerization kettle according to claim 1, wherein a plurality of limit sliding grooves (5) which are uniformly distributed and are used for sliding and installing the water blocking ring (3) are longitudinally formed in the inner wall of the backflow pipeline (4).
5. The water retaining ring of the polymerization kettle according to claim 4, wherein the upper end of the water retaining ring (3) is provided with a diversion surface (7) for diversion of return water, and the water retaining ring (3) positioned on the periphery of the diversion surface (7) is provided with a limit sliding block (6) which is integrally formed with the water retaining ring (3) and is used for sliding connection with the limit sliding groove (5).
6. The water retaining ring of a polymerization kettle according to claim 5, wherein the top of the limit slide block (6) is provided with a guide sliding surface (8) attached to the upper end of the guide surface (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325070.5U CN219784717U (en) | 2023-05-29 | 2023-05-29 | Polymeric kettle water retaining ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325070.5U CN219784717U (en) | 2023-05-29 | 2023-05-29 | Polymeric kettle water retaining ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219784717U true CN219784717U (en) | 2023-10-03 |
Family
ID=88153414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321325070.5U Active CN219784717U (en) | 2023-05-29 | 2023-05-29 | Polymeric kettle water retaining ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219784717U (en) |
-
2023
- 2023-05-29 CN CN202321325070.5U patent/CN219784717U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |