CN217210418U - Polyvinyl chloride polymerization kettle condensing device - Google Patents
Polyvinyl chloride polymerization kettle condensing device Download PDFInfo
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- CN217210418U CN217210418U CN202220350509.9U CN202220350509U CN217210418U CN 217210418 U CN217210418 U CN 217210418U CN 202220350509 U CN202220350509 U CN 202220350509U CN 217210418 U CN217210418 U CN 217210418U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The utility model relates to a condensing device of a polyvinyl chloride polymerization kettle, which comprises a condenser, a transition piece, a wall coating liquid pipe, a midway water injection pipe, a steam pipe, a recovery flushing pipe and a circulating water pipe; the condenser is communicated with the top of the polymerization kettle through a transition piece, the top of the condenser and one side of the transition piece are respectively provided with a spray head which is connected with a wall coating liquid pipe, a steam pipe and a midway water injection pipe, and the spray heads are used for wall coating and midway water injection; the top of the condenser is connected with a recovery flushing pipe; one side of the condenser is provided with a circulating water inlet pipe and a circulating water outlet pipe. The utility model discloses effectively alleviate condenser tubulation and transition piece because of the problem that monomer auto-agglutination blockked up, reduce polymeric kettle condenser cleaning frequency, improve heat transfer effect and rate of equipment utilization, reduce cost improves the benefit.
Description
Technical Field
The utility model relates to a heat exchanger field in the polyvinyl chloride production process especially relates to a polyvinyl chloride polymeric kettle condensing equipment.
Background
The production of polyvinyl chloride resin has been developed for decades, the production device thereof is gradually enlarged, and the PVC polymerization kettle used in the industry is mostly 105m 3 The heat exchange quantity required in the reaction process is correspondingly increased after the production is large-sized, and the heat exchange quantity required for the production of PVC with different types is different in the production process of the special material for the polyvinyl chloride resin pipe, and meanwhile, the heat exchange quantity is gatheredIn the synthetic reaction process, as the gas phase substance containing chloroethylene rises to the top of the condenser through the condenser tube nest and is condensed into liquid chloroethylene under the action of a corresponding initiator, the liquid chloroethylene is self-polymerized on the inner wall of the condenser and the inner wall of the tube nest and attached to the inner wall, the VCM liquid is smoothly refluxed due to the reciprocating reaction, the self-polymerization reaction is aggravated, the blockage of the condenser tube nest is accelerated, and finally the heat exchange effect of the condenser is failed.
In the existing design process of the polymerization kettle, a kettle top condenser of the polymerization kettle is designed into three low-temperature water injection pipelines which are respectively designed into one way at the top of the condenser, two ways of water injection pipelines are designed on a condenser transition piece, a water injection nozzle is also a spraying nozzle of the kettle top condenser, a common high-pressure atomizing nozzle or a spiral nozzle is adopted, the requirement of the nozzle on the water pressure of water injection is higher, the larger the diameter of a spray hole is, the thicker the atomization is due to the internal structure of the nozzle, the requirement on the diameter of the spray hole cannot be too large on the premise of ensuring a certain atomization degree, otherwise, the wall coating and the washing of the condenser can not be uniformly carried out through the nozzle, so that the generation of autopolymer is caused in the condenser, meanwhile, the nozzle is more easily blocked due to the smaller diameter of the spray hole, and the blockage of the upper space of the condenser and the inner wall of a tube array can be more serious, the long-term use of the condenser is influenced, the heat exchange capacity of the polymerization kettle is greatly reduced, pressure and economic loss are brought to PVC production, and great restriction is generated to chemical production.
SUMMERY OF THE UTILITY MODEL
For solving among the prior art polymeric kettle condenser tubulation and transition piece easily take place the auto-polymerization and take place to block up, increase the problem of the cleaning frequency of condenser, the utility model provides a polyvinyl chloride polymeric kettle condensing equipment.
The utility model adopts the technical proposal that: the utility model provides a polyvinyl chloride polymeric kettle condensing equipment, includes polymeric kettle, transition piece and condenser, the transition piece is connected to the condenser bottom, the cauldron top intercommunication of transition piece and polymeric kettle, transition piece mid-mounting has the transition piece shower nozzle, the first wall pipe and first midway water injection pipe of scribbling is connected to the transition piece shower nozzle, the top shower nozzle is installed at the condenser top, the second is scribbled to the top shower nozzle and the second midway water injection pipe, first wall pipe and second are scribbled the wall pipe and are scribbled the wall pipe by scribbling wall house steward branch for parallelly connected two tunnel, the washing pipe is retrieved by midway water injection house steward branch to first midway water injection pipe and second midway water injection pipe, condenser one side upper portion is connected with the circulating water inlet tube, condenser one side sub-unit connection has the circulating water outlet pipe.
As a further improvement of the utility model, the condenser is a shell and tube condenser.
As the utility model discloses a further improvement, top shower nozzle and transition piece shower nozzle are 360 rotatory nozzle, top shower nozzle and transition piece shower nozzle comprise coupling nut, shower nozzle base, rotatory nozzle and fan-shaped nozzle, coupling nut connects the shower nozzle base, rotatory nozzle is connected to the shower nozzle base, set up 3 fan-shaped nozzles that the orientation is different on the rotatory nozzle.
As a further improvement, be equipped with midway water injection main valve on the water injection house steward midway, first midway water injection pipe is provided with 1 valve of midway water injection and water injection flowmeter, the water injection pipe is provided with 2 valves of midway water injection and water injection flowmeter midway in the second to the realization is to pipeline independent control, guarantees the stability of water injection flow midway.
As a further improvement of the utility model, it comprises with scribbling wall liquid pipe intercommunication to scribble the wall house steward by the steam pipe, the steam pipe is equipped with the steam trip valve respectively with scribbling the wall liquid pipe and scribbles wall liquid regulating valve, first scribble wall pipe and second and scribble wall pipe and be provided with respectively and scribble 1 valves of wall and scribble 2 valves of wall.
The first coating pipe is communicated with the first midway water injection pipe, and the second coating pipe is communicated with the second midway water injection pipe.
As the utility model discloses a further improvement, retrieve flushing pipe one end and connect the condenser top, the other end branch is two the tunnel, connects the flushing pipe all the way, set up the flushing water valve on the flushing pipe, connect the recovery tube all the way, set up the recovery valve on the recovery tube.
Furthermore, the main midway water injection valve, the 1 midway water injection valve, the water injection flow meter, the 2 midway water injection valve, the water injection flow meter, the steam stop valve, the wall coating liquid adjusting valve, the 1 wall coating valve, the 2 wall coating valve, the recovery valve and the flushing water valve are all automatically controlled by a DCS (distributed control System) system so as to realize automatic control according to the polymerization reaction condition and the setting of relevant parameters.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a 360 rotatory nozzle makes the polymeric kettle condenser scribble the wall, washes spraying and washing of the in-process that midway water injection can both all-round multi-angle, and the effectual cleaning frequency who alleviates and has lacked the polymeric kettle condenser has strengthened the heat transfer ability of polymeric kettle condenser indirectly, has reduced polymeric kettle's manufacturing cost and has improved production efficiency. On the premise that the total amount of the wall coating liquid and the water injection is not changed, the interior of the condenser of the polymerization kettle can be more comprehensively washed, so that fish eyes are reduced, the quality of PVC resin is improved, the method has the advantages of low investment, easiness in implementation and simple and reasonable process, and the purposes of increasing yield and increasing efficiency can be effectively achieved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a front view of the top nozzle and transition piece nozzle of the present invention;
FIG. 3 is a front view of the spray nozzle of the present invention;
fig. 4 is a plan view of the head nozzle of the present invention.
In the figure: 1. a condenser; 2. a transition piece; 3. a polymerization kettle; 4. a transition piece spray head; 5. a top shower head; 6, a steam pipe; 7. a wall coating liquid pipe; 8. coating a main pipe; 9. a second coated tube; 10. a first coated tube; 11. a main pipe for water injection in midway; 12. a first midway water injection pipe; 13. a second midway water injection pipe; 14. recovering the flushing pipe; 15. a recovery pipe; 16. flushing the water pipe; 17. a circulating water inlet pipe; 18. a circulating water outlet pipe; 19, a steam stop valve; 20. a coating liquid regulating valve; 21. coating a wall 1 valve; 22. coating a wall 2 valve; 23. a main valve for water injection in midway; 24. a 2 valve for water injection in midway; 25. injecting water in midway through a valve 1; 26. a recovery valve; 27. flushing a water valve; 28. a water injection flow meter 1; 29. a water injection flow meter 2; 30. a nozzle base; 31. rotating the spray head; 32. a fan-shaped nozzle; 33. and connecting a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be fully described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention, and not all embodiments. Other embodiments obtained by persons skilled in the art without creative work belong to the protection scope of the invention.
Examples
Referring to the attached drawings 1, 2, 3 and 4, the utility model provides a polyvinyl chloride polymerization kettle condensing device, which comprises a polymerization kettle 3, a transition piece 2 and a condenser 1, wherein the bottom of the condenser 1 is connected with the transition piece 2, the transition piece 2 is communicated with the kettle top of the polymerization kettle 3, the middle part of the transition piece 2 is provided with a transition piece nozzle 4, the transition piece nozzle 4 is connected with a first coating wall pipe 10 and a first midway water injection pipe 12, the top of the condenser 1 is provided with a top nozzle 5, the top nozzle 5 is connected with a second coating wall pipe 9 and a second midway water injection pipe 13, the first coating wall pipe 10 and the second coating wall pipe 9 are connected in parallel by a coating wall main pipe 8, the first midway water injection pipe 12 and the second midway water injection pipe 13 are connected in parallel by a midway water injection main pipe 11, the top of the condenser 1 is connected with a recovery flushing pipe 14, the upper part of one side of the condenser 1 is connected with a circulating water 17, and the lower part of one side of the condenser is connected with a circulating water outlet pipe 18.
Another embodiment differs in that the condenser is a shell and tube condenser.
Another embodiment is different in that the top nozzle 5 and the transition piece nozzle 4 are 360 ° rotary nozzles, the top nozzle 5 and the transition piece nozzle 4 are composed of a connection nut 33, a nozzle base 30, a rotary nozzle 31 and fan-shaped nozzles 32, the connection nut 33 is connected with the nozzle base 30, the nozzle base 30 is connected with the rotary nozzle 31, and 3 fan-shaped nozzles 32 with different orientations are arranged on the rotary nozzle 31.
The other embodiment is different in that the main midway water injection pipe 11 is provided with a main midway water injection valve 23, the first midway water injection pipe 12 is provided with a valve for midway water injection 1 25 and a water injection flow meter 28, and the second midway water injection pipe 13 is provided with a valve for midway water injection 2 24 and a water injection flow meter 29, so that the pipelines can be independently monitored, and the stability of the midway water injection flow can be ensured.
The other embodiment is different in that the main pipe 8 for coating wall is composed of a steam pipe 6 and a pipe 7 for coating wall, the steam pipe 6 and the pipe 7 for coating wall are respectively provided with a steam stop valve 19 and a valve 20 for regulating coating liquid, and the first pipe 10 for coating wall and the second pipe 9 for coating wall are respectively provided with a valve 21 for coating wall 1 and a valve 22 for coating wall 2.
The other embodiment is different in that the first coated pipe 10 and the first midway water injection pipe 12 are communicated with each other, and the second coated pipe 9 and the second midway water injection pipe 13 are communicated with each other.
Another embodiment is different in that one end of the recovery flushing pipe 14 is connected to the top of the condenser 1, and the other end is branched into two branches, one branch is connected to the flushing water pipe 16, a flushing water valve 27 is arranged on the flushing water pipe 16, the other branch is connected to the recovery pipe 15, and a recovery valve 26 is arranged on the recovery pipe 15.
The difference of another embodiment is that the main water midway filling valve 23, the water midway filling 1 valve 25, the water filling flow meter 28, the water midway filling 2 valve 24, the water filling flow meter 29, the steam cut-off valve 19, the wall coating liquid regulating valve 20, the wall coating 1 valve 21, the wall coating 2 valve 22, the recovery valve 26 and the flushing water valve 27 are all automatically controlled by the DCS system so as to realize automatic control according to the polymerization reaction condition and relevant parameter setting.
The working process of the device is as follows:
when the embodiment is used, the wall coating, water filling midway and recovery washing processes are mainly involved.
Before coating, confirming that the discharge recovery of the polymerizer is finished, starting a coating program, opening a steam stop valve 19, a coating 1 valve 21 and a coating 2 valve 22, leading steam to a condenser according to the set steam flow and the set steam leading time, opening a coating liquid regulating valve 20 after delaying time, and spraying the coating liquid on the top of the condenser and the middle of a transition piece respectively through a first coating pipe 10, a transition piece nozzle 4, a second coating pipe 9 and a top nozzle 5 in parallel; after the formula amount of the wall coating liquid is set, closing the wall coating liquid regulating valve 20, and closing the steam stop valve 19 after time delay; injecting water in midway through a first midway water injection pipe 12 and a transition piece spray head 4, a second midway water injection pipe 13 and a top spray head 5 in parallel according to the set water injection flow and the water injection formula amount, and respectively injecting the water in the top of the condenser and the middle of the transition piece; discharging, washing and recycling after the polymerization reaction is finished.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a polyvinyl chloride polymerizer condensing device, includes polymerizer (3), transition piece (2) and condenser (1), and is characterized in that: transition piece (2) is connected to condenser (1) bottom, the cauldron top intercommunication of transition piece (2) and polymeric kettle (3), transition piece (2) mid-mounting has transition piece shower nozzle (4), first scribble wall pipe (10) and first midway water injection pipe (12) are connected in transition piece shower nozzle (4), top shower nozzle (5) are installed at condenser (1) top, second scribble wall pipe (9) and second midway water injection pipe (13) are connected in top shower nozzle (5), first scribble wall pipe (10) and second scribble wall pipe (9) and are divided by scribbling wall house steward (8) and be parallelly connected two the tunnel, first midway water injection pipe (12) and second midway water injection pipe (13) are divided by midway water injection house steward (11) and are parallelly connected two the tunnel, recovery flushing pipe (14) are connected at condenser (1) top, condenser (1) one side upper portion is connected with circulating water inlet tube (17), and the lower part of one side of the condenser is connected with a circulating water outlet pipe (18).
2. The condensation device of polyvinyl chloride polymerizers according to claim 1, wherein the condenser (1) is a shell-and-tube condenser.
3. The condensation device of the polyvinyl chloride polymerization kettle according to claim 1, wherein the top nozzle (5) and the transition piece nozzle (4) are 360 ° rotary nozzles, the top nozzle (5) and the transition piece nozzle (4) are composed of a connection nut (33), a nozzle base (30), a rotary nozzle (31) and fan-shaped nozzles (32), the connection nut (33) is connected with the nozzle base (30), the nozzle base (30) is connected with the rotary nozzle (31), and the rotary nozzle (31) is provided with 3 fan-shaped nozzles (32) with different orientations.
4. The condensation device of the polyvinyl chloride polymerization kettle according to claim 1, wherein the main midway water injection pipe (11) is provided with a main midway water injection valve (23), the first midway water injection pipe (12) is provided with a valve (25) for midway water injection 1 and a water injection flow meter 1 (28), and the second midway water injection pipe (13) is provided with a valve (24) for midway water injection 2 and a water injection flow meter 2 (29) to realize independent monitoring of pipelines and ensure the stability of the flow of midway water injection.
5. A pvc polymerizer condensation device according to claim 1, wherein the wall-coating main (8) is composed of a steam pipe (6) and a wall-coating liquid pipe (7) which are connected, the steam pipe (6) and the wall-coating liquid pipe (7) are respectively provided with a steam shut-off valve (19) and a wall-coating liquid regulating valve (20), and the first wall-coating pipe (10) and the second wall-coating pipe (9) are respectively provided with a wall-coating 1 valve (21) and a wall-coating 2 valve (22).
6. A condensation unit for polyvinyl chloride polymerizers, according to claim 1, wherein the first coated tube (10) and the first midway water injection tube (12) are communicated with each other, and the second coated tube (9) and the second midway water injection tube (13) are communicated with each other.
7. The condensation device of the polyvinyl chloride polymerization kettle according to claim 1, wherein one end of the recovery flushing pipe (14) is connected to the top of the condenser (1), the other end of the recovery flushing pipe is branched into two branches, one branch is connected to the flushing water pipe (16), the flushing water pipe (16) is provided with a flushing water valve (27), the other branch is connected to the recovery pipe (15), and the recovery pipe (15) is provided with a recovery valve (26).
8. The condensation device of the polyvinyl chloride polymerization kettle according to claim 1, wherein the main water filling midway valve (23), the 1 water filling midway valve (25), the 1 (28) water filling flow meter, the 2 water filling midway valve (24), the 2 (29) water filling flow meter, the steam stop valve (19), the wall coating liquid regulating valve (20), the 1 (21) wall coating valve, the 2 (22) wall coating valve, the recovery valve (26) and the flushing water valve (27) are all automatically controlled by a DCS system to realize automatic control according to the polymerization reaction condition and related parameter settings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220350509.9U CN217210418U (en) | 2022-02-22 | 2022-02-22 | Polyvinyl chloride polymerization kettle condensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220350509.9U CN217210418U (en) | 2022-02-22 | 2022-02-22 | Polyvinyl chloride polymerization kettle condensing device |
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| CN217210418U true CN217210418U (en) | 2022-08-16 |
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| CN202220350509.9U Active CN217210418U (en) | 2022-02-22 | 2022-02-22 | Polyvinyl chloride polymerization kettle condensing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118386513A (en) * | 2024-05-11 | 2024-07-26 | 汤臣(江苏)材料科技股份有限公司 | Acrylic waste recycling screw extrusion cracking equipment and working method |
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2022
- 2022-02-22 CN CN202220350509.9U patent/CN217210418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118386513A (en) * | 2024-05-11 | 2024-07-26 | 汤臣(江苏)材料科技股份有限公司 | Acrylic waste recycling screw extrusion cracking equipment and working method |
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