CN209335865U - It is a kind of to exempt from dry liquid-phase tackifying granulation tinuous production for PET recycling - Google Patents
It is a kind of to exempt from dry liquid-phase tackifying granulation tinuous production for PET recycling Download PDFInfo
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- CN209335865U CN209335865U CN201821877646.8U CN201821877646U CN209335865U CN 209335865 U CN209335865 U CN 209335865U CN 201821877646 U CN201821877646 U CN 201821877646U CN 209335865 U CN209335865 U CN 209335865U
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- phase tackifying
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- granulated
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Abstract
The utility model provides a kind of dry liquid-phase tackifying of exempting from for PET recycling and is granulated tinuous production; it solves just to can be carried out subsequent production after existing PET production line needs to carry out material crystallization and dry two steps; the lower problem of production efficiency, including melt extrusion apparatus, mixing tack producing device, impurity separating device, melt forming device and pelletizing recyclable device.The utility model greatly promotes production efficiency, reduces production cost it is not necessary that material is crystallized and dried in advance；Polyester fondant purity is high, the viscosity produced are high, improve the performance of terminal regeneration polyester product.
Description
Technical field
The utility model relates to a kind of PET remanufacture lines, and in particular to a kind of to exempt from dry liquid phase increasing for PET recycling
It is viscous to be granulated tinuous production.
Background technique
Due to the nature of polyester, existing PET production line will be pre-crystallized equipped with PET and drying system, PET polyester exist
More sensitive to water under high temperature, micro moisture can also make it degrade in extrusion, make the melt strength of product, make to make
Product yellowing.And pre-crystallized effect is that PET fragment is allowed to crystallize, and improves its melting temperature, prevents the heat drying process below
In, there is the problem of PET fragment agglomeration；It carries out crystallizing and drying to need to invest large number of equipment, it usually needs steam heating drum comes
Crystallizing and drying raw material, cost of investment is big, and operating cost is high.
Summary of the invention
In view of the deficienciess of the prior art, the utility model provides and a kind of exempts from dry liquid-phase tackifying for PET recycling
It is granulated tinuous production, solves just to can be carried out after existing PET production line needs to carry out material crystallization and dry two steps
Subsequent production, the lower problem of production efficiency.
The utility model is achieved through the following technical solutions:
It is a kind of to exempt from dry liquid-phase tackifying granulation tinuous production for PET recycling, including melt extrusion apparatus, mixing increase
Viscous device, impurity separating device, melt forming device and pelletizing recyclable device, described in the melt extrusion apparatus discharge end connection
Tack producing device is mixed, the mixing tack producing device is by sequentially connected coarse filter, static mixer, liquid-phase tackifying kettle and discharging
Pump group is at the impurities outlet of the liquid-phase tackifying kettle connects the impurity separating device, and the impurity separating device is by successively connecting
Vacuum condenser, vacuum filter, the liquid ring vacuum pump group composition connect, the discharging pump discharge end connect the melt into shape dress
It sets, the melt forming device is made of sequentially connected in-line viscometer, fine filter, end of extruded band and tie rod sink, described
Tie rod sink discharging end connects the pelletizing recyclable device.
The melt extrusion apparatus is by hopper, double screw extruder and vacuumizes unit and forms, the feed hopper bottom connection
Feed end on the left of the double screw extruder vacuumizes unit described in the pipeline connection of top in the middle part of the double screw extruder.
The pelletizing recyclable device is made of sequentially connected pelleter, whizzer and feed bin.
The end of extruded band bottom is equipped with the staggered discharge hole of two or more rows, and the discharge hole is taper.
One cooler of external connection of the tie rod sink.
Compared with prior art, the utility model has the beneficial effects that
1, double screw extruder cooperation vacuumizes unit, is capable of providing efficient surface replacement rate, so that polymer is molten
The exhaust of body has more efficiency, while can generate bigger free volume, is conducive to the discharge of gas, fully absorbs in material
Moisture greatly promotes production efficiency, reduces production cost it is not necessary that material is crystallized and dried in advance；
2, polymerization reaction occurs in liquid-phase tackifying kettle, forms high-viscosity polyester melt, molecular weight is continuously increased, with stirring
Reaction under effect carries out, and the uniformity of melt is enhanced；Meanwhile under high vacuum state, lower-molecular substance is taken out by gasification
Out, the purity of melt is continuously improved.
3, by the real-time monitoring of in-line viscometer and feedback, the humidity of unit instrumentality material is vacuumized, to control small
The concentration of molecule realizes the control degree of polymerization indirectly, guarantees that the melt quality of outlet controls within the deviation of very little, it is ensured that melt
Viscosity stabilization；
4, the utility model uses triple filter system, and polyester fondant purity is high, the viscosity produced are high, improves terminal again
The performance of raw polyester product.
Detailed description of the invention
Fig. 1 is the main view of the utility model.
In attached drawing: 1. melt extrusion apparatus；2. mixing tack producing device；3. impurity separating device；4. melt forming device；5.
Pelletizing recyclable device；6. hopper；7. double screw extruder；8. vacuumizing unit；9. coarse filter；10. static mixer；11.
Liquid-phase tackifying kettle；12. discharging pump；13. vacuum filter；14. liquid-ring vacuum pump；15. in-line viscometer；16. fine filter；
17. end of extruded band；18. tie rod sink；19. pelleter；20. whizzer；21. feed bin；22. vacuum condenser.
Specific embodiment
If a kind of dry liquid-phase tackifying of exempting from recycled for PET shown in FIG. 1 in Figure of description is granulated tinuous production,
Including melt extrusion apparatus 1, mixing tack producing device 2, impurity separating device 3, melt forming device 4 and pelletizing recyclable device 5, melt
Melt 1 discharge end of extrusion device connection mixing tack producing device 2, mixing tack producing device 2 is mixed by sequentially connected coarse filter 9, static state
Clutch 10, liquid-phase tackifying kettle 11 and discharging pump 12 form, and the impurities outlet of liquid-phase tackifying kettle 11 connects impurity separating device 3, miscellaneous
Matter separator 3 is made of sequentially connected vacuum condenser 22, vacuum filter 13, liquid ring vacuum pump group 14, discharging pump 12
Discharge end connects melt forming device 4, and melt forming device 4 is by sequentially connected in-line viscometer 15, fine filter 16, Cast Strip
First 17 and tie rod sink 18 form, tie rod sink 18 discharge end connect pelletizing recyclable device 5.
Wherein, melt extrusion apparatus 1 by hopper 6, double screw extruder 7 and vacuumizes unit 8 and forms, and 6 bottom of hopper connects
Logical 7 left side feed end of double screw extruder, 7 middle part top pipeline connection of double screw extruder vacuumize unit 8.
In addition, pelletizing recyclable device 5 is made of sequentially connected pelleter 19, whizzer 20 and feed bin 21.
The real work method of the utility model is as follows:
First cloth is transported in double screw extruder 7 by hopper 6, by two screw rods by anti-in an entire body
Direction is mutually rotated material extruding into melt conveying, then independent in the middle upper part installation one of double screw extruder 7
Unit 8 is vacuumized, efficient surface replacement rate is capable of providing, so that the exhaust of polymer melt has more efficiency, simultaneously as
The system can generate bigger free volume, be more advantageous to the discharge of gas, fully absorb the moisture in material, there is no need to
Material is crystallized and dried in advance, while list can be carried out with the melt contacted on the sleeve of double screw extruder 7
Only temperature control, to can more accurately hold to melt temperature, melt reclaimed materials becomes melt in screw rod melting, then passes through
First of coarse filter 9 filters out mechanical admixture in melt and solid impurity readjusts the molecular structure of reclaimed materials,
Meet the product requirement of different purposes, melt at this time due to raw material inhomogeneities, and in double screw extruder 7 and thick mistake
A small amount of hydrolysis, thermal degradation and the oxygen degradation occurred in filter 9, is then uniformly mixed by static mixer 10, is fed through liquid phase
It viscosifies in kettle 11.
As the reaction stirred under disc stirring action in liquid-phase tackifying kettle 11 carries out, the uniformity of melt is improved；With this
Meanwhile organic impurities is largely thermal decomposited, the dynamic viscosity of entire melt is also lowered therewith, reduces vapour from melt
To the diffusional resistance of gas phase, be conducive to remove small molecule and decomposition product, be exposed to liquid phase being then gradually stirred disc and taking up
In the gas-phase space for viscosifying kettle 11, the impurity and small molecule largely decomposed is gradually diffused into gas-phase space, and reversible balance is anti-
It should gradually be carried out to direction of polymerization.
Under the swabbing action of liquid ring vacuum pump group 14, the impurity and small molecule separated quilt in vacuum condenser 22
Condensation and the melt rubbish collected and then regrouped are transported to second vacuum filter by the sucking pump of liquid ring vacuum pump group
In device 13, filter out for clearance in the rubbish vapored away etc..
Then during liquid-phase tackifying 11 melt conveying of kettle, it is equipped with in-line viscometer 15 in the outlet of discharging pump 12, is used
To monitor the real-time quality of the melt of output, which is fed back to by automatic control system vacuumizes unit 8, Ke Yitong
Vacuum controller is crossed to adjust the humidity of material, to control the concentration of small molecule, the control degree of polymerization is realized indirectly, guarantees outlet
Melt quality control within the deviation of very little, it is ensured that melt viscosity stable uniform.
Final step is carried out in fine filter 16 to filter out remaining mechanical admixture in raw material and degrade stylish with polycondensation
The aggregated particle of generation, to ensure the melt quality of spinning.By under the transmission of metering pump by melt conveying at end of extruded band 17,
17 bottom of end of extruded band is equipped with the staggered discharge hole of two or more rows, and discharge hole is taper, and its purpose is to just
In discharging and form continuous strip, it is cooling after can continuous tie rod pelletizing, the material strip of extrusion need to be passed through in tie rod sink 18 into
Row cooling down, one cooler of external connection of tie rod sink 18 effectively can carry out cooling down to water, improve cold
But effect, to ensure that material strip is fully cooled and moisture content reaches requirement, being effectively prevented causes because material strip temperature is excessively high
Phenomena such as pelleter 19 is stuck, sieving materials are excessive, improves product quality.
Finally, the particle cut is sent in whizzer 20, whizzer 20 mainly for separating of crystallization and mother liquor,
Water tariff collection its cleanliness in fibre is removed, is sent to 21 feed bins in case shipment.
In conclusion the preferred embodiment of only the utility model, is not used to limit the utility model implementation
Range, all equivalent changes according to carried out by shape described in the utility model claims range, construction, feature and spirit with repair
Decorations, should be included in the scope of the claims of the utility model.
Claims (5)
1. a kind of dry liquid-phase tackifying of exempting from for PET recycling is granulated tinuous production, it is characterised in that: filled including melting extrusion
(1), mixing tack producing device (2), impurity separating device (3), melt forming device (4) and pelletizing recyclable device (5) are set, it is described molten
Melt extrusion device (1) discharge end and connect the mixing tack producing device (2), the mixing tack producing device (2) is by sequentially connected thick
Filter (9), static mixer (10), liquid-phase tackifying kettle (11) and discharging pump (12) composition, the liquid-phase tackifying kettle (11)
Impurities outlet connects the impurity separating device (3), and the impurity separating device (3) is by sequentially connected vacuum condenser
(22), vacuum filter (13), liquid ring vacuum pump group (14) composition, discharging pump (12) discharge end connect the melt forming
Device (4), the melt forming device (4) is by sequentially connected in-line viscometer (15), fine filter (16), end of extruded band (17)
And tie rod sink (18) composition, tie rod sink (18) discharging end connect the pelletizing recyclable device (5).
2. a kind of dry liquid-phase tackifying of exempting from for PET recycling according to claim 1 is granulated tinuous production, feature
Be: the melt extrusion apparatus (1) is by hopper (6), double screw extruder (7) and vacuumizes unit (8) and forms, the hopper
(6) bottom is connected to feed end on the left of the double screw extruder (7), pipeline connection in top in the middle part of the double screw extruder (7)
It is described to vacuumize unit (8).
3. a kind of dry liquid-phase tackifying of exempting from for PET recycling according to claim 1 is granulated tinuous production, feature
Be: the pelletizing recyclable device (5) is made of sequentially connected pelleter (19), whizzer (20) and feed bin (21).
4. a kind of dry liquid-phase tackifying of exempting from for PET recycling according to claim 1 is granulated tinuous production, feature
Be: end of extruded band (17) bottom is equipped with the staggered discharge hole of two or more rows, and the discharge hole is taper.
5. a kind of dry liquid-phase tackifying of exempting from for PET recycling according to claim 1 is granulated tinuous production, feature
It is: one cooler of external connection of the tie rod sink (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877646.8U CN209335865U (en) | 2018-11-14 | 2018-11-14 | It is a kind of to exempt from dry liquid-phase tackifying granulation tinuous production for PET recycling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877646.8U CN209335865U (en) | 2018-11-14 | 2018-11-14 | It is a kind of to exempt from dry liquid-phase tackifying granulation tinuous production for PET recycling |
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| Publication Number | Publication Date |
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| CN209335865U true CN209335865U (en) | 2019-09-03 |
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| CN201821877646.8U Active CN209335865U (en) | 2018-11-14 | 2018-11-14 | It is a kind of to exempt from dry liquid-phase tackifying granulation tinuous production for PET recycling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964181A (en) * | 2019-11-27 | 2020-04-07 | 仪征威英化纤有限公司 | Tackifying device for regenerated polyester melt and production method of regenerated fiber |
-
2018
- 2018-11-14 CN CN201821877646.8U patent/CN209335865U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964181A (en) * | 2019-11-27 | 2020-04-07 | 仪征威英化纤有限公司 | Tackifying device for regenerated polyester melt and production method of regenerated fiber |
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