CN201745107U - Production device of functional polyamide-6 granula - Google Patents
Production device of functional polyamide-6 granula Download PDFInfo
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- CN201745107U CN201745107U CN2010202628690U CN201020262869U CN201745107U CN 201745107 U CN201745107 U CN 201745107U CN 2010202628690 U CN2010202628690 U CN 2010202628690U CN 201020262869 U CN201020262869 U CN 201020262869U CN 201745107 U CN201745107 U CN 201745107U
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Abstract
The invention relates to a production device of functional polyamide-6 granula, which comprises a polymerization tower, a granulator, an extraction device and a drier, wherein the bottom of the polymerization tower is connected with a fusant pump, the fusant pump is connected with the feed port of a double-screw extruder which conveys the fusant to the granulator, the double-screw extruder is also provided with a second feed port, and the second feed port is connected with a metering conveyer device which is connected with a raw material preparation system. During production, the utility model can flexibly switch variety, and additive in the production process has good dispersibility, stable quality, low production cost and convenient production and control.
Description
Technical field
The present invention relates to a kind of process units of nylon 6 slice, be specially adapted to the process units of functional nylon 6 sections.
Background technology
At present a lot of nylon 6 downstream product, comprise silk, film and plastics etc., can both utilize and add functional component realization functionalization, as antibiotic property, antistatic behaviour, far infrared emission, uvioresistant, painted etc., modal method is that system is made master batch with the part nylon 6 resin earlier, when moulding, add when (spinning, injection moulding, extrude) and mix, that adopts that this mode adds mainly contains antiseptic, rouge and powder far away etc., add before polymerization exactly in addition, typical additive has the titanium dioxide that uses as delustering agent.Some kind such as fabric can also carry out the mode of surface treatment (comprising dyeing) and come additional functional.
The master batch method has simply, makes things convenient for, easily changes, easy to clean, dispersiveness is advantage preferably, but particularly needs expensive precision measuring equipment in the fiber production when moulding is added, and polymer is made master batch, still need the part degraded to take place at least again through a thermal process.And in the practical operation, most master batch manufacturer base resins rely on buying, because the resin source is different, state difference (as polyamide water content difference) causes the fluctuation of master batch quality.And in the master batch manufacturing process, also require raw material to have good compatibility, general inorganic particle all needs to increase the surface treatment of compatibility, particularly nano level additive, if do not carry out respective handling, in screw rod be can not be distributed to nano level.In the use in downstream, if adopt master batch, the fiber of particularly having relatively high expectations often needs the process units of routine is reequiped in producing, and installs comparatively expensive metered shot device additional.If adopt master batch and section blend, have incomplete mixing, shortcomings such as layering.
At present nylon 6 continuous polymerization units that use are by polymerization tower, pelleter, and extraction tower, drying tower connect composition in proper order, and monomer, additive are by all can only be by adding before the polymerization.And the functional section that the method that polymerization is added is produced, additive easily is uniformly dispersed, and do not need to reprocess through screw rod, but its limitation is bigger, add this moment to raw material require high, the raw material that requires add this moment will stand the high temperature about at least 270 ℃, and the environment of hydrolysis also requires polymerisation is not had generation with catalyze side reactions.The long polymerization reaction time thing that also requires to respond is a steady suspension very, otherwise will take place to reunite and sedimentation, therefore available additive seldom, and present continuous process units production capacity is huge, raw material and melt pipe are numerous, if change kind, need long transition to clean, expend a large amount of raw material, greatly increase cost, therefore also only full-dull, half delustring of product of actual production, light section kind is arranged, to numerous in variety, the less relatively functional section of demand may be produced hardly.
Chinese patent CN200680033892.9 has described in the production of polymer, and particularly in the production of PET, a shunting part is mixed with additive from melt, and the melt with this part mixing is back to the upper reaches again, finishes the interpolation of additive with this.CN200610039098.7 has described a kind of method and apparatus of bacteria resistant polyester, to mix with a part of polyester through the antiseptic that air-flow is pulverized, again with mixture and the good melt mixed of polymerization, wherein a part of polyester of Zhi Qian that can be by cutting into slices through fusion again, also can be the melt shunting part by polymerization.And the engineering plastics base resin that produces in continuous polymerization has been described in CN200610146010.1, and referring in particular to nylon 66, melt adds auxiliary agent simultaneously through twin-screw, extrudes pelletizing, gets engineering plastics.And in nylon 6 is produced, from the melt that polymerization tower is discharged, also have about 10% monomer and oligomer, if directly add Powdered interpolation auxiliary agent in the polymerization pipe exit, volatile monomer and oligomer will bring bigger trouble to interpolation under the high temperature.Therefore and be not suitable for nylon 6 production processes of hydrolysis polymerization and above patent all is directly to mix with additive with polymer melt, and is dispersed relatively poor, requires high field to disperseing, and as application such as spinning, membranes, is difficult for reaching requirement.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of low, functional easily nylon 6 section process units of production control of production kind, additive good dispersion, steady quality, production cost that can switch product flexibly.
The technical solution adopted in the present invention is:
A kind of process units of functional nylon 6 sections; comprise polymerization tower, pelleter, extraction equipment and drying device; the bottom of described polymerization tower is connected with Melt Pump; Melt Pump connects the charging aperture of a double screw extruder; double screw extruder with melt Conveying to pelleter; described double screw extruder also is provided with second charging aperture, and this second charging aperture connects metering and conveying device, and metering and conveying device connects the raw material compounding system.
Further improvement of the present invention, described raw material compounding system comprises the cast hopper that connects successively by pipeline, the hold-up tank of being with material-compound tank, screw extruder, mixer grinder and the band agitating device of agitating device, the hold-up tank bottom connects metering and conveying device, described material-compound tank also is provided with liquid feed pipe, is used to add liquid caprolactam when batching.
Further improvement of the present invention, described mixer grinder exports the hold-up tank that is connected with two band agitating devices by triple valve, and the hold-up tank outlet connects metering and conveying device by another triple valve again.
Further improvement of the present invention, the equipment and the pipeline of described raw material compounding system surround by chuck.
Further improvement of the present invention is disposed with Melt Pump and fondant filter between described double screw extruder and the pelleter.
Further improvement of the present invention, described metering and conveying device are plunger displacement pump.
Chuck can keep the caprolactam in the raw material compounding system to be in a liquid state, after dropping into functional additive in the material-compound tank, add liquid caprolactam, the agitating device of material-compound tank carries out pre-dispersed to it, clamp-oning mixer grinder then proceeds pre-dispersed thing to disperse, stir by grinding, effectively the former diameter of particle of refinement disperses aggregate.Functional powder average grain diameter after it is disperseed reaches below the 1um, and the product after it disperses is a suspension.Caprolactam and auxiliary agent add before polymerization in addition; through the polymerization of hydrolysis polymerization; the suspension for preparing is measured and is delivered to double screw extruder with plunger displacement pump; melt and suspension mix homogenizing through double screw extruder; and further disperse; after be extruded into pelleter, extraction equipment, the caprolactam that the remaining caprolactam of polymerization, oligomer and extruder place are added extracts.
The invention has the beneficial effects as follows:
The additive charging aperture is selected in polymerization and finishes the place, avoids functional additive and other auxiliary agent such as molecular weight regulator etc. to react in advance or catalytic polymerization side reaction etc. occurs, reduces the generation of existing pictures such as additive is reunited in polymerization process, sedimentation again.And conversion only need clean double screw extruder during kind and get final product, and double screw extruder has self-cleaning, and it is very easy to clean, thereby also very convenient when the switching kind, is convenient to adjust the production schedule.
By the raw material compounding system of strap clamp cover, functional additive can be scattered in the liquid caprolactam, by the peptizaiton of mixer grinder, functional additive can be disperseed better, particle diameter is thinner.
Double screw extruder can mix melt and functional additive dispersion liquid, and realizing better distributes mixes.And the time of arrheaing is short, and the caprolactam of increase is not enough to influence the balance of polymerisation, can not change molecular weight.
Because having added as solvent, the double screw extruder place uses caprolactam, the amount of caprolactam improves with respect to oligomer, since oligomer particularly the solubility of cyclic dimer in caprolactam much larger than the solubility in water, therefore oligomer is easier when extraction is extracted out, reaches lower content.To such an extent as to extract also has better performance at concentration process, can effectively reduce oligomer separating out in extraction process.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two.
The specific embodiment
Embodiment one
With reference to shown in Figure 1, the process units production capacity of nylon 6 slice is 500 kg/day, and polymerization tower 1 outlet is connected with a double screw extruder 9 by Melt Pump 2, and the screw diameter of double screw extruder 9 is 20mm, and draw ratio is 36:1.Functional additive drops into material-compound tank 4 by cast hopper 3; the material-compound tank volume is 50L; the band mixer; by screw extruder 5; connect mixer grinder 6; the hold-up tank 7 that connects two 50L band agitating devices by threeway; when producing; after a basin is filled, measure its accurate concentration, according to the accurate inlet amount of concentration adjustment; the material that grind out this moment is discharged into another basin; input to double screw extruder 9 by 8 meterings of a plunger displacement pump, twin-screw is extruded pressurized delivered to pelleter 20, again through extraction and dry.
Embodiment two
With reference to shown in Figure 2, the process units production capacity of nylon 6 slice is 15 tons/day, polymerization tower 1 outlet connects a double screw extruder 9 by Melt Pump 2, the screw diameter of double screw extruder 9 is 75mm, draw ratio is 36:1, maximum speed is 800 rev/mins, and material drops into material-compound tank 4 by cast hopper 3, and the material-compound tank volume is 3 m
3, the band mixer, maximum speed is 1000 rev/mins, by screw extruder 5, connects mixer grinder 6, connects two 3 m by threeway
3The hold-up tank 7 of band agitating device inputs to double screw extruder 9 by 8 meterings of a plunger displacement pump, and double screw extruder 9 outlets are pressurizeed by the fondant filter 10 stable pelleters 20 that are delivered to, again through extraction and dry by Melt Pump 2 '.
Certainly, the present invention is not limited to the above embodiments, is equal to the present invention or the similar techniques scheme also should belong within protection scope of the present invention.
Claims (7)
1. the process units of functional nylon 6 sections; comprise polymerization tower (1), pelleter (20), extraction equipment and drying device; it is characterized in that: the bottom of described polymerization tower (1) is connected with Melt Pump (2); Melt Pump (2) connects the charging aperture (91) of a double screw extruder (9); double screw extruder (9) with melt Conveying to pelleter; described double screw extruder (9) also is provided with second charging aperture (92); this second charging aperture (92) connects metering and conveying device (8), and metering and conveying device (8) connects the raw material compounding system.
2. the process units of a kind of functional nylon 6 sections according to claim 1, it is characterized in that: described raw material compounding system comprises the hold-up tank (7) of the cast hopper (3) that connects successively by pipeline, the material-compound tank (4) of being with agitating device, screw extruder (5), mixer grinder (6) and band agitating device, hold-up tank (7) bottom connects metering and conveying device (8), and described material-compound tank (4) also is provided with liquid feed pipe (41).
3. the process units of a kind of functional nylon 6 sections according to claim 2, it is characterized in that: described mixer grinder (6) exports the hold-up tank (7) that is connected with two band agitating devices by triple valve, and hold-up tank (7) outlet connects metering and conveying device (8) by another triple valve again.
4. according to the process units of claim 1,2 or 3 described a kind of functional nylon 6 sections, it is characterized in that: the equipment and the pipeline of described raw material compounding system surround by chuck.
5. according to the process units of claim 1,2 or 3 described a kind of functional nylon 6 sections, it is characterized in that: be disposed with Melt Pump (2 ') and fondant filter (10) between described double screw extruder (9) and the pelleter (20).
6. the process units of a kind of functional nylon 6 sections according to claim 4 is characterized in that: be disposed with Melt Pump (2 ') and fondant filter (10) between described double screw extruder (9) and the pelleter (20).
7. the process units of a kind of functional nylon 6 sections according to claim 1, it is characterized in that: described metering and conveying device (8) is a plunger displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202628690U CN201745107U (en) | 2010-07-19 | 2010-07-19 | Production device of functional polyamide-6 granula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202628690U CN201745107U (en) | 2010-07-19 | 2010-07-19 | Production device of functional polyamide-6 granula |
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| CN201745107U true CN201745107U (en) | 2011-02-16 |
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| CN2010202628690U Expired - Lifetime CN201745107U (en) | 2010-07-19 | 2010-07-19 | Production device of functional polyamide-6 granula |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905493A (en) * | 2010-07-19 | 2010-12-08 | 广东新会美达锦纶股份有限公司 | Device for producing functional nylon 6 chip |
| CN102251324A (en) * | 2011-06-20 | 2011-11-23 | 广东新会美达锦纶股份有限公司 | Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage |
| CN102649297A (en) * | 2012-05-14 | 2012-08-29 | 高鼎精细化工(昆山)有限公司 | TPU compound modification production device |
| CN102691123A (en) * | 2012-05-28 | 2012-09-26 | 江阴市强力化纤有限公司 | Continuous non-oxidized polyamide-6 production system |
| WO2021237655A1 (en) * | 2020-05-26 | 2021-12-02 | 金发科技股份有限公司 | Liquid additive assisted polymer extrusion and blending method and device and use thereof |
-
2010
- 2010-07-19 CN CN2010202628690U patent/CN201745107U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905493A (en) * | 2010-07-19 | 2010-12-08 | 广东新会美达锦纶股份有限公司 | Device for producing functional nylon 6 chip |
| CN102251324A (en) * | 2011-06-20 | 2011-11-23 | 广东新会美达锦纶股份有限公司 | Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage |
| CN102251324B (en) * | 2011-06-20 | 2013-01-30 | 广东新会美达锦纶股份有限公司 | Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage |
| CN102649297A (en) * | 2012-05-14 | 2012-08-29 | 高鼎精细化工(昆山)有限公司 | TPU compound modification production device |
| CN102691123A (en) * | 2012-05-28 | 2012-09-26 | 江阴市强力化纤有限公司 | Continuous non-oxidized polyamide-6 production system |
| WO2021237655A1 (en) * | 2020-05-26 | 2021-12-02 | 金发科技股份有限公司 | Liquid additive assisted polymer extrusion and blending method and device and use thereof |
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Granted publication date: 20110216 |