CN102516515A - Cellular jacket type final polymerization kettle - Google Patents
Cellular jacket type final polymerization kettle Download PDFInfo
- Publication number
- CN102516515A CN102516515A CN2011104332765A CN201110433276A CN102516515A CN 102516515 A CN102516515 A CN 102516515A CN 2011104332765 A CN2011104332765 A CN 2011104332765A CN 201110433276 A CN201110433276 A CN 201110433276A CN 102516515 A CN102516515 A CN 102516515A
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- CN
- China
- Prior art keywords
- polymerization kettle
- kettle
- terminal polymerization
- cylindrical shell
- welded
- 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.)
- Granted
Links
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 25
- 230000001413 cellular effect Effects 0.000 title description 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims 1
- 239000010432 diamond Substances 0.000 claims 1
- 238000006068 polycondensation reaction Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 4
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- -1 polyethylene terephthalate Polymers 0.000 abstract description 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 241000264877 Hippospongia communis Species 0.000 description 18
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000005886 esterification reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010036 direct spinning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
Images
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- Polyesters Or Polycarbonates (AREA)
- Polyamides (AREA)
Abstract
The invention which belongs to the technical field of chemical engineering equipment relates to a final polymerization kettle for a final polycondensation reaction of oligomers in the PET (polyethylene terephthalate) production. The kettle is characterized in that: the kettle comprises a cylinder body, a jacket and an internal part; the internal part which is a cage basket type film pulling apparatus is arranged in the cylinder body through two end covers; and the external of the cage basket type film pulling apparatus is provided with an axial scraper plate, and net disks braided with stainless steel wires are axially arranged in the basket at different intervals. According to the kettle, wall thicknesses of the jacket and the internal cylinder are substantially reduced, so the manufacturing cost is reduced, and the heat transfer effect is simultaneously improved. By adopting an integrated design of a transmission shaft and the kettle body, an onsite alignment difficult is avoided, and a strict and harsh deformation constraint facility is simplified, so design, installation and maintenance requirements are simplified. By adopting an ear type bearer to support, a series of influences caused by thermal expansion can be avoided.
Description
Technical field
The invention 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 object of the present invention 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.
Terminal polymerization kettle of the present invention 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.
Main technical schemes of the present invention: 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 honeycomb jacket formula of the present invention, 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 present invention 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 terminal polymerization kettle of the present invention 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.
Terminal polymerization kettle of the present invention adopts ear formula seat supports.
Whole polycondensation vessel of the present invention 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 present invention compares 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.
Minor axis of the present invention 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 embodiment of the invention 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 present invention 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 |
|---|---|---|---|
| CN 201110433276 CN102516515B (en) | 2011-12-22 | 2011-12-22 | Cellular jacket type final polymerization kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110433276 CN102516515B (en) | 2011-12-22 | 2011-12-22 | Cellular jacket type final polymerization kettle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102516515A true CN102516515A (en) | 2012-06-27 |
| CN102516515B CN102516515B (en) | 2013-04-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110433276 Active CN102516515B (en) | 2011-12-22 | 2011-12-22 | Cellular jacket type final polymerization kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102516515B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275310A (en) * | 2013-06-01 | 2013-09-04 | 张家港市宝田新型材料科技有限公司 | Last-polycondensation reactor |
| CN103923665A (en) * | 2014-04-22 | 2014-07-16 | 刘庸 | Novel dimple jacket heat exchange ascension pipe of coke oven |
| CN106622083A (en) * | 2016-12-23 | 2017-05-10 | 南京昊扬化工装备有限公司 | Novel high-viscosity final polycondensation reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615626Y (en) * | 2003-05-20 | 2004-05-12 | 上海森松压力容器有限公司 | Heat exchange equipment jacket |
| CN102141355A (en) * | 2010-02-01 | 2011-08-03 | 张建东 | Honeycomb heating jacket for chemical vessel |
-
2011
- 2011-12-22 CN CN 201110433276 patent/CN102516515B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615626Y (en) * | 2003-05-20 | 2004-05-12 | 上海森松压力容器有限公司 | Heat exchange equipment jacket |
| CN102141355A (en) * | 2010-02-01 | 2011-08-03 | 张建东 | Honeycomb heating jacket for chemical vessel |
Non-Patent Citations (2)
| Title |
|---|
| 《石油化工设备技术》 20060715 张志芳 "关于夹套容器内筒加强结构的探讨" 第16-17，21页 1-7 第27卷, 第4期 * |
| 张志芳: ""关于夹套容器内筒加强结构的探讨"", 《石油化工设备技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275310A (en) * | 2013-06-01 | 2013-09-04 | 张家港市宝田新型材料科技有限公司 | Last-polycondensation reactor |
| CN103923665A (en) * | 2014-04-22 | 2014-07-16 | 刘庸 | Novel dimple jacket heat exchange ascension pipe of coke oven |
| CN106622083A (en) * | 2016-12-23 | 2017-05-10 | 南京昊扬化工装备有限公司 | Novel high-viscosity final polycondensation reactor |
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| Publication number | Publication date |
|---|---|
| CN102516515B (en) | 2013-04-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Honeycomb jacketed final polymerization kettle Effective date of registration: 20220322 Granted publication date: 20130417 Pledgee: Nanjing Liuhe Branch of Jiangsu Bank Co.,Ltd. Pledgor: NANJING HAOYANG CHEMICAL EQUIPMENT Co.,Ltd. Registration number: Y2022980002937 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20130417 Pledgee: Nanjing Liuhe Branch of Jiangsu Bank Co.,Ltd. Pledgor: NANJING HAOYANG CHEMICAL EQUIPMENT Co.,Ltd. Registration number: Y2022980002937 |