CN202430152U - Honeycomb jacket type final polymerization kettle - Google Patents
Honeycomb jacket type final polymerization kettle Download PDFInfo
- Publication number
- CN202430152U CN202430152U CN2011205410095U CN201120541009U CN202430152U CN 202430152 U CN202430152 U CN 202430152U CN 2011205410095 U CN2011205410095 U CN 2011205410095U CN 201120541009 U CN201120541009 U CN 201120541009U CN 202430152 U CN202430152 U CN 202430152U
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- polymerization kettle
- terminal polymerization
- welded
- cylindrical shell
- honeycomb
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Abstract
The utility model belongs to the technical field of chemical equipment and relates to a final polymerization kettle for performing final condensation polymerization on oligomer during PET (polyethylene terephthalate) production. The final polymerization kettle comprises a barrel, a jacket and an inner element, wherein a short honeycomb tube is welded on an outer wall of the barrel; the inner element is a cage type film-drawing device and is arranged in the barrel through two end covers; an axial scraper blade is arranged on the exterior of the cage type film-drawing device; and net plates formed by weaving stainless steel wires are welded in the cage at different intervals along the axial direction. The final polymerization kettle has the advantages that the jacket wall thickness and the inner barrel wall thickness are greatly reduced, the manufacturing cost is lowered and the heat-transfer effect is greatly increased. The integrated design of transmission shaft and kettle body is adopted, so that the on-site correcting difficulty is avoided, the strict and rigorous deformation restraining facilities are simplified, and the demands on design, mounting and maintenance are simplified. A lug type supporting base is used for supporting, so that a series of influences caused by thermal expansion are avoided.
Description
Technical field
The utility model belongs to technical field of chemical, is a kind of honeycomb jacket formula terminal polymerization kettle, specially refers to the terminal polymerization kettle that oligopolymer carries out final polycondensation in the PET production.
Background technology
The production of polyester is that esterification reaction raw material terepthaloyl moietie (EG) and terephthalic acid (PTA) are cooperated in the esterification reaction device in certain proportion; Suitable in addition temperature, pressure condition; Thereby keep the enough time to accomplish esterification reaction; Generate terephthalic acid terepthaloyl moietie vinegar (BHET), and then further the phthalic acid terepthaloyl moietie fat that generates is done polycondensation and handle, generate the polyethylene terephthalate.
Final minification gathers reaction and requires under the high temperature about 290 ° of C, to carry out, and whole polycondensation vessel is to rely on high temperature heating agent in the chuck to heat up and be incubated.Owing to also have certain pressure in addition in the chuck, cause traditional whole polycondensation vessel inner core housing wall thickness thicker like this.So not only equipment cost is higher, and energy loss is also comparatively serious.In addition, in the temperature-rise period, there is bigger swell increment in traditional whole polycondensation vessel between body and each parts.In order to guarantee the normal operation of whole polycondensation vessel and machine envelope, in the equipment installation process, must carry out strict centering.At first carry out cold centering, carry out hot centering then, complex procedures, each centering process need long period.
Summary of the invention
The purpose of the utility model is to provide a kind of processing requirement that can satisfy in the production of polyester, can reduce the honeycomb jacket formula terminal polymerization kettle of equipment cost again.
The terminal polymerization kettle of the utility model is that the prepolymer that the precondensation operation is sent here is carried out final polycondensation at this; Make the esterification yield of material reach more than 99.8%, the polymerization degree reaches the final polymer about n=100, use for processing PET Resin/Poyester Chips Bottle Grade and melt direct spinning.
The main technical schemes of the utility model: a kind of honeycomb jacket formula terminal polymerization kettle, agent structure comprises cylindrical shell, chuck and internals, it is characterized in that being welded with on the cylinder body outer wall honeycomb short tube; Internals are cage basket formula film drawing device, place in the cylindrical shell through two end caps; There is axial scraper plate cage basket formula film drawing device outside, is welded with the net dish of Stainless Steel Wire establishment in the basket vertically with different intervals.
Usually, the whole polycondensation vessel of the honeycomb jacket formula of the utility model, main body is by cylindrical shell, chuck and honeycomb short tube, compositions such as vessel flange.The heating cylindrical shell adopts the welded construction of honeycomb short tube and chuck welding, and upper and lower end closing in place of chuck all is welded on the outer wall of inner barrel with honeycomb short tube bottom.According to the different processes requirement, can select honeycomb short tube square or rhombohedral distribution mode with axially and circumferential pitch, make cylindrical shell and chuck wall thickness economy and rationally.This structure is strengthened the inner barrel of heating cylindrical shell and the strength and stiffness of chuck each other, has enlarged the WP and the operating temperature range that are suitable for.
The utility model adopts the horizontal terminal polymerization kettle of the single driving of incorporate minor axis support between transmission shaft and the cylindrical shell; For making the terminal polymerization kettle works better; Keep vacuum in the still, also have packing_seal and mechanical seal on the transmission shaft, annular seal space has the lubricated cooling of circulation terepthaloyl moietie; The end axle is fixed thin oil lubricant by two pairs of self-aligning bearings; Spindle nose has six square keys to transmit torque, forms still, axle integral structure.
The internals cage basket formula film drawing device of the utility model terminal polymerization kettle is a large-scale welding processing part; Two end caps and cylindrical shell adopt the lip welded seal; Be welded with the net dish of Stainless Steel Wire establishment in the basket vertically with different intervals, guaranteed that high-viscosity polymer is in the plug flow state all the time in reactor drum.
The terminal polymerization kettle of the utility model adopts ear formula seat supports.
The whole polycondensation vessel of the utility model has guaranteed that high-viscosity polymer is in the plug flow state all the time in reactor drum, and reactor efficiency is high.Rational in infrastructure, help reducing the long-time running cost of equipment.
The utility model is compared with traditional Prepolycondensating reactor, has advantage:
From the intensity angle, honeycomb jacket equipment greatly reduces chuck wall thickness and inner core wall thickness, and manufacturing cost reduces; From the heat transfer angle; The gap of honeycomb jacket is littler than the gap of common chuck, and circulation area is less, and fluid flow velocity in the chamber significantly increases; And a large amount of honeycombs plays a part flow-disturbing spare in chuck; Fluid constantly changes flow direction and velocity of flow when flowing through cellular site, form turbulent eddy current heat (cold) exchange is quickened, and increases heat-transfer effect greatly.
The utility model minor axis supports the horizontal final minification of single driving and gathers integrated design between reaction kettle employing transmission shaft and the kettle, avoids the difficulty of on-the-spot centering and has simplified strict and harsh deformation constrain facility, has simplified the requirement of design, installation and maintenance.Adopt ear formula seat supports, avoided a series of influences that cause because of thermal expansion.
Description of drawings
Fig. 1 is the structural representation of the whole polycondensation vessel of the utility model embodiment honeycomb jacket formula.Fig. 2 is a present embodiment welding node synoptic diagram.
Among the figure, 1-opening for feed; 2-driven shaft and sealed structure thereof; 3,12-end cap; 4,11-flange and skirt seal structure thereof; 5-internals; 6-honeycomb short tube; 7-chuck; 8-cylindrical shell; 9-ear seat; 10-venting port; 13-main drive shaft and sealed structure thereof; The 14-shaft coupling; 15-step-down gear and phonomoter; 16-discharge port.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Embodiment:Present embodiment terminal polymerization kettle structure is shown in accompanying drawing 1, and agent structure comprises cylindrical shell 8, chuck 7 and internals 5, and its principal feature is to be welded with honeycomb short tube 6 on cylindrical shell 8 outer walls; Internals 5 are cage basket formula film drawing device, place in the cylindrical shell 8 through two end caps 3,12; There is axial scraper plate cage basket formula film drawing device outside, is welded with the net dish of Stainless Steel Wire establishment in the basket vertically with different intervals.
Shown in accompanying drawing 2, the welded construction that heating cylindrical shell 1 adopts honeycomb short tube 6 and chuck 7 to weld, upper and lower end closing in place of chuck 7 all is welded on the outer wall of cylindrical shell 8 with honeycomb short tube 6 bottoms.According to the different processes requirement, can select honeycomb short tube 6 squares or rhombohedral distribution mode and axially reach circumferential pitch.
Present embodiment adopts the horizontal terminal polymerization kettle of the single driving of incorporate minor axis support between transmission shaft and the cylindrical shell 8, through main drive shaft and sealed structure 13 and driven shaft and sealed structure 2 thereof, forms still, an integral structure.Sealed structure on the transmission shaft is packing_seal and mechanical seal, and annular seal space has the lubricated cooling of circulation terepthaloyl moietie, and the end axle is fixed thin oil lubricant by two pairs of self-aligning bearings; Spindle nose has six square keys to transmit torque.Transmission shaft connects with step-down gear and phonomoter 15 through shaft coupling 14.
The internals 5 cage basket formula film drawing devices of present embodiment terminal polymerization kettle are large-scale welding processing parts; Through flange and 4,11 and two end caps 3,12 of skirt seal structure and cylindrical shell 8 employing lip welded seals; Be welded with the net dish of Stainless Steel Wire establishment in the basket vertically with different intervals, guaranteed that high-viscosity polymer is in the plug flow state all the time in reactor drum.
Among the embodiment, cylindrical shell 8 adopts ear seat 9 to support, and cylindrical shell 8 is provided with opening for feed 1, venting port 10 and discharge port 16.
Application examples: prepolymer is got into by whole polycondensation vessel bottom feed mouth 1; Stirred and adhere to the thin material film of formation on the net dish by internals 5 cage basket formula film deposition system inner radial net dishes and external shaft to scraper plate; The material film constantly flows downward owing to action of gravity again; Constantly produce new material surface, the volatilization of small molecules terepthaloyl moietie of reacted provides sufficient surface for gathering, and has improved the rate of diffusion of terepthaloyl moietie in the liquid phase; Reach the purpose of deviating from terepthaloyl moietie rapidly, make that the polycondensation under the HV situation can be carried out smoothly.Polymkeric substance stops the regular hour in reactor drum after, the polymer melt that reaches the product index requirement is extracted out by the melt discharging pump by discharge port 16.
Claims (7)
1. honeycomb jacket formula terminal polymerization kettle, agent structure comprises cylindrical shell, chuck and internals, it is characterized in that being welded with on the cylinder body outer wall honeycomb short tube; Internals are cage basket formula film drawing device, place in the cylindrical shell through two end caps; There is axial scraper plate cage basket formula film drawing device outside, is welded with the net dish of Stainless Steel Wire establishment in the basket vertically with different intervals.
2. terminal polymerization kettle as claimed in claim 1 is characterized in that closing in place of chuck upper and lower end and honeycomb short tube bottom all are welded on the outer wall of cylindrical shell.
3. according to claim 1 or claim 2 terminal polymerization kettle is characterized in that the honeycomb short tube is square profile.
4. according to claim 1 or claim 2 terminal polymerization kettle is characterized in that the distribution that assumes diamond in shape of honeycomb short tube.
5. terminal polymerization kettle as claimed in claim 1; It is characterized in that adopting the horizontal terminal polymerization kettle of the single driving of incorporate minor axis support between transmission shaft and the cylindrical shell; Transmission shaft is provided with packing_seal and mechanical seal, and the end axle is fixed by two pairs of self-aligning bearings, and spindle nose has six square keys to transmit torque.
6. like claim 1 or 5 described terminal polymerization kettles, it is characterized in that two end caps of cage basket formula film drawing device and cylindrical shell adopt the lip welded seal.
7. like claim 1 or 5 described terminal polymerization kettles, it is characterized in that terminal polymerization kettle adopts ear formula seat supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205410095U CN202430152U (en) | 2011-12-22 | 2011-12-22 | Honeycomb jacket type final polymerization kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205410095U CN202430152U (en) | 2011-12-22 | 2011-12-22 | Honeycomb jacket type final polymerization kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202430152U true CN202430152U (en) | 2012-09-12 |
Family
ID=46779617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205410095U Expired - Fee Related CN202430152U (en) | 2011-12-22 | 2011-12-22 | Honeycomb jacket type final polymerization kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202430152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918039A (en) * | 2019-12-27 | 2020-03-27 | 上海聚友化工有限公司 | Final polycondensation reaction kettle |
-
2011
- 2011-12-22 CN CN2011205410095U patent/CN202430152U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918039A (en) * | 2019-12-27 | 2020-03-27 | 上海聚友化工有限公司 | Final polycondensation reaction kettle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |