CN107053558A - A kind of high-cleanness nylon chips drying device and production line - Google Patents
A kind of high-cleanness nylon chips drying device and production line Download PDFInfo
- Publication number
- CN107053558A CN107053558A CN201710388467.1A CN201710388467A CN107053558A CN 107053558 A CN107053558 A CN 107053558A CN 201710388467 A CN201710388467 A CN 201710388467A CN 107053558 A CN107053558 A CN 107053558A
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- filter
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- cleanness
- drying
- cooling
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- 238000001035 drying Methods 0.000 title claims abstract description 71
- 239000004677 Nylon Substances 0.000 title claims abstract description 51
- 229920001778 nylon Polymers 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000000605 extraction Methods 0.000 claims description 75
- 239000000835 fiber Substances 0.000 claims description 58
- 238000009833 condensation Methods 0.000 claims description 28
- 230000005494 condensation Effects 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000001704 evaporation Methods 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims 1
- 239000004917 carbon fiber Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 34
- 238000004064 recycling Methods 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 61
- 229920000642 polymer Polymers 0.000 description 39
- 238000005453 pelletization Methods 0.000 description 34
- 229920000728 polyester Polymers 0.000 description 28
- 239000007788 liquid Substances 0.000 description 18
- 239000000047 product Substances 0.000 description 18
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 16
- 238000001467 acupuncture Methods 0.000 description 15
- -1 aliphatic diamine Chemical class 0.000 description 15
- 239000004743 Polypropylene Substances 0.000 description 14
- 238000009413 insulation Methods 0.000 description 14
- 229920001155 polypropylene Polymers 0.000 description 14
- 239000003963 antioxidant agent Substances 0.000 description 7
- 230000003078 antioxidant effect Effects 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 7
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 239000012467 final product Substances 0.000 description 6
- 229920002292 Nylon 6 Polymers 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000003490 calendering Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229920002302 Nylon 6,6 Polymers 0.000 description 4
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920006012 semi-aromatic polyamide Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical group NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229960002684 aminocaproic acid Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000344 molecularly imprinted polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000066 reactive distillation Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of high-cleanness nylon chips drying device and production line, belong to chemical field, include continuous drying tower, star-like drawing mechanism, cooling feed bin successively from top to bottom, continuous drying tower top is provided with hot N2Drying system, hot N2Drying system includes the first N2Filter, first circulation blower fan, the first N2Heater, the first N2Filter inlet is connected with continuous drying top of tower, first circulation fans entrance and the first N2Filter outlet is connected, the first N2Calorifier inlets are connected with first circulation fan outlet, the first N2Heater outlet is connected with being connected to dry in the middle part of tower side wall, the first N2Provided with one layer of moisture content sorbing material in filter.The beneficial effects of the invention are as follows：Pass through hot N2The moisture content of wet slice surface is taken away, and passes through the first N2Filter removes N2In moisture content, reuse the first N2Heater is to N2Concurrent heating is carried out, is realized to hot N2N in drying system2Recycling.
Description
Technical field
The present invention relates to chemical field, more particularly to a kind of high-cleanness nylon chips drying device and production line.
Background technology
Nylon material is widely used in spinning, injection and film product due to its unique performance advantage, and nylon-6 is by making
Carry out commodity production as initiation material with caprolactam, the technique typically comprise by caprolactam in VK pipes in air
Heated 12 to 24 hours under pressure, this technique productions goes out the nylon-6 product containing 7-10% caprolactams in the product.It is surplus
Remaining caprolactam was extracted by using 8~12 hours aqueous solution extraction technique, and then the product of extraction is dried 8 to 12 hours,
The desciccate containing 0.2 to 0.3% caprolactam is produced, although the technique is commercially available success, nylon-6
The purification of product is that the purification by liquid extraction improvement of nylon product is always influence nylon finished product the process adds sizable spending
The very crucial factor of quality.
Publication No. CN1538984A application for a patent for invention discloses a kind of production method of nylon 6, wherein containing master
The caprolactam of part and/or the feed stream of the prepolymer of nylon 6 and the ACN of secondary part is wanted to be added into multistage
Section reactive distillation column in, in tower feed stream by with steam stream be in adverse current in the way of flow.Although this patent is by reducing
The purification step of intermediate product, but its purity for finally giving nylon is in reduced levels, can influence nylon final product quality.
And for example CN1513016A application for a patent for invention discloses the method that one kind prepares nylon 6,6, by adiponitrile and
The reaction of hexamethylene diamine and water in counter-flow multi-level tower reactor, prepares polyamide (nylon 6,6 and single containing copolymerization
The nylon 6,6 of body).The adiponitrile is hydrolyzed by being reacted with the water of dissolving, the water be by with adiponitrile and later reaction
The flow direction of product keeps the steam of reverse flow to supply and supplement, then adiponitrile hydrolysate and hexamethylene diamine
It polymerize under the operating condition of tower and forms nylon 6,6 polyamide.But this patent do not introduce to extraction nylon chips it is water-soluble
The recovery of liquid and recycle.
For another example CN101768266A application for a patent for invention discloses a kind of preparation method of semi-aromatic nylon, including as follows
Step：(1) aliphatic diamine is well mixed with 2~10 times of water, is heated to 50~90 DEG C, fragrance is added under agitation
Race's binary acid, until solution ph reaches 7.0~7.7, continues after stirring 1~5 hour, is cooled to room temperature and is further continued for stirring 1~5
Hour, obtain nylon salt after filtration drying standby；(2) obtained nylon salt and solvent are pressed into certain proportioning (0.5~3.0g/
ML polymeric kettle) is added, 190~230 DEG C are warming up under inert gas shielding, it is 2.0~3.0MPa to keep pressure in kettle, and 1~5 is small
When after deflate, pressure in kettle was down to normal pressure in 1~5 hour, then heat to 210~270 DEG C continue react 1~5 hour,
Discharging obtains powdered semi-aromatic nylon product.But this patent do not introduce yet to extract the nylon chips aqueous solution recovery and
Recycle.
The content of the invention
To overcome, nylon finished product impurity content present in prior art is high, second-rate, cleaning solution utilization rate is not high
The problems such as, the invention provides a kind of high-cleanness nylon chips drying device, include continuous drying tower successively from top to bottom, star-like
Drawing mechanism, cooling feed bin, the continuous drying tower top is provided with hot N2Drying system, the hot N2Drying system includes first
N2Filter, first circulation blower fan, the first N2Heater, the first N2Filter inlet connects with the continuous drying top of tower
Connect, the first circulation fans entrance and the first N2Filter outlet is connected, the first N2Calorifier inlets and described the
One circulating fan outlet connection, the first N2Heater outlet is dried with the connection and connected in the middle part of tower side wall, the first N2
Provided with one layer of moisture content sorbing material in filter.Pass through hot N2The moisture content of wet slice surface is taken away, and passes through the first N2Filter is removed
Remove N2In moisture content, reuse the first N2Heater is to N2Concurrent heating is carried out, is realized to hot N2N in drying system2Recycling.
Further, the moisture content sorbing material uses carbon fibre composite as skeleton, and in surface attachment activated carbon
Particle.
Further, the carbon fibre composite uses needling process, and its thickness exists in 1cm-5cm, pore radius control
Below 0.5mm, wherein activated carbon granule size are controlled in 0.05-0.1mm.By designing condensation zone, make N after cooling2
Baffle plate with each section of condensation section in condensation zone is fully contacted, N2In water stay in dew formed on baffle plate, so as to realize N2With water
The separation of part.
Further, it is additionally provided with the second hot N on the continuous drying tower2Drying system, the 2nd N2Drying system includes the
One heat sink, the second heat sink, second circulation blower fan and the 2nd N2Heater, the first heat sink entrance with it is described
First circulation fan outlet is connected, and the second heat sink entrance is connected with first heat sink outlet, and described second
Circulating fan entrance is connected with second heat sink outlet, the 2nd N2Calorifier inlets and the second circulation blower fan
Outlet is connected, the 2nd N2Heater outlet is connected with the continuous drying tower bottom.Second hot N2Pass through two in drying system
Secondary cooling design, makes N2Temperature be reduced to below dew point, isolate N2In moisture content, then by heating make N2Temperature reach
140~160 DEG C, enter from continuous drying tower bottom, redrying is carried out to nylon chips.
Further, second heat sink is provided with condensation zone.
Further, the condensation zone is made up of a plurality of in the condensation passage of bending, and every section of condensation passage is by more
Section condensation section composition.
Further, the angle between adjacent two sections of condensation section is 30~60 °.
Further, the cooling feed bin is provided with N2Cooling system, the N2Cooling system includes the 2nd N2It is filter, cold
But blower fan and N2Cooler, the 2nd N2Filter inlet with it is described cooling feed bin at the top of be connected, the cooling blower entrance and
2nd N2Filter outlet is connected, the N2Cooler entrance is connected with cooling blower outlet, the N2Cooler goes out
Mouth is connected with the cooling bin bottom.By setting N on cooling feed bin2Cooling system, is not only realized to dry chip finished product
Cooling, and also achieve drying again to dry chip, further improve the quality of final finished.
Further, the activated carbon granule accounts for less than the 30% of carbon fibre composite gross mass, preferably 25%.
A kind of high-cleanness nylon chips production line, including above-mentioned drying device, include static mixing successively from front to back
Device, evaporation reactor, tubular reactor, finished product reactor, screw extruder, pelleter and extraction equipment, the drying device
It is arranged on the extraction equipment rear.
Further, the extraction equipment is followed including head tank, extraction tower, extraction tower top EGR, extraction tower bottom
Loop device, pure hot water water supply installation and centrifugal separating device, the head tank are arranged at the top of the extraction tower, the extraction tower
Top EGR is arranged on the extraction tower upper area, and extraction tower bottom EGR and the pure hot water supply water and filled
Put and be arranged on the extraction tower bottom, the centrifugal separating device charging aperture is connected with the extraction tower bottom, the centrifugation point
It is connected from device delivery port with the water inlet of the pure hot water water supply installation.Nylon chips by extraction tower top EGR,
Extraction tower bottom EGR liquidates extraction twice, removes most molecular weight polymers of slice surface, extraction tower top
Filter is equipped with EGR and extraction tower bottom EGR, the small molecule in recirculated water is gathered by filter
Compound is filtered, and molecular weight polymers content of the recirculated water before extraction section is rinsed is less than 0.005%, so as to realize water
Recycling.
Further, extraction tower top EGR includes the first delivery pump, the first filter and primary heater, institute
The first conveying pump intake is stated with being connected at the top of the extraction tower, first filter inlet is pumped out with the described first conveying
Mouth is connected, and the primary heater entrance is connected with first filter outlet, the primary heater outlet and the extraction
Take and be connected in the middle part of tower.
Further, first filter is provided with acupuncture filter material, by 40~80wt% polyester fiber and 20~
60wt% polypropylene fiber is obtained through acupuncture, calen-dering process.Using acupuncture filter material, mixed by polyester fiber and polypropylene fiber
Close, acupuncture makes mutually to wind between fiber, form the space structure based on polyester fiber, recycle the melting of polypropylene fiber,
Make it that polyester fiber crossover node to be fixed, so as to form firm three dimensions filtration.
Further, the porosity of the acupuncture filter material is 60~90%, and pore diameter is less than 0.3mm.
Further, the thickness of the acupuncture filter material is 0.5~1.5cm, and grammes per square metre is 100~300g/cm2。
Further, the polyester fiber is distributed in more than three kinds of cross fiber type in the range of 0.5~3D using fineness
Composition, wherein fineness are more than 1.5D polyester fiber quality accounting more than 50%, and the length of polyester fiber is 37~51mm.
Further, the polypropylene fiber fineness is 1-2D, preferably 2D；Length is 35-48mm, preferably 38mm.Using
The polyester fiber of different thicknesses is mixed by a certain percentage with polypropylene fiber, by needling process be designed into using polyester fiber as
The space structure of network skeleton, then by calen-dering process, polypropylene fiber melting is attached at the crossover node of polyester fiber, shape
Into the three dimensions filter frame of stabilized structure, the molecular weight polymers that can effectively prevent diameter from being more than 0.3mm pass through, realization pair
The filtering of recirculated water.
Further, extraction tower bottom EGR include secondary heater, the secondary heater entrance with it is described
Extraction tower is connected close to bottom sides, and the secondary heater outlet is connected with the extraction tower bottom.
Further, the pure hot water water supply installation includes hopper, the second delivery pump, the second filter, the hopper
Water inlet is connected with the centrifugal separating device delivery port, the hopper delivery port and the second delivery pump water inlet phase
Even, the second filter water inlet is connected with the delivery pump delivery port, the second filter delivery port and the extraction
Tower bottom is connected.Second filter use with the first filter identical structure and material, but its fibre fineness for using and
Pore diameter is respectively less than the first filter, and the fineness of preferred polyester fiber is distributed in more than three kinds in the range of 0.5~3D here
Cross fiber type composition, wherein fineness be less than 1.5D polyester fiber quality accounting more than 80%, the length of polyester fiber
It is 60~90% for 37~51mm, and the acupuncture filter material porosity, pore diameter is less than 0.1mm.Due to the first mistake
Filter and the second filter are respectively for front and rear extraction and recovery liquid, the content and diameter of its recovered liquid small molecular polymer twice
The characteristics of recovered liquid being in different conditions, extraction tower top EGR is that molecular weight polymers content is high, diameter compared with
Greatly, and molecular weight polymers diameter otherness it is larger, its diameter exceedes in more than 0.3mm molecular weight polymers quality accounting
60%, thus the target of the first filter be mainly realize to these diameters more than 0.3mm molecular weight polymers filtering；And extract
The characteristics of taking the recovered liquid in the EGR of tower bottom is then that molecular weight polymers content is relatively low, and diameter is smaller, and small point
The otherness of sub- polymer diameter is smaller, and boy of its diameter more than 0.1~0.3 divides polymer quality accounting more than 70%,
Therefore the target of the second filter then be realize to diameter more than 0.1mm molecular weight polymers filtering.
Further, the extraction tower bottom water inlet is provided with changeover valve.
Further, the pelleter is included in pelletizing case, motor and control cabinet, the pelletizing case provided with auxiliary fixation
Provided with heating and thermal insulation layer, the heating in chamber, the first insulating, pelletizing chamber and grain-cutter, first insulating
Heat-conducting plate is provided with the inside of heat-insulation layer, heat-conducting plate is connected with auxiliary lock chamber, and auxiliary lock chamber bottom is connected with pelletizing chamber, described to cut
Grain knife is located at the top of pelletizing intracavitary, the grain-cutter with aiding in the bottom of lock chamber tangent, and the grain-cutter is passed by rotating shaft
Pelletizing case is connected with motor, and the inwall of the pelletizing chamber is provided with refrigerating layer.
Wherein, the extruder head is located in auxiliary lock chamber, and the auxiliary lock chamber left and right sides is respectively provided with an extruding
Connection hydraulic bag on the outside of fixed plate, extruding fixed plate, hydraulic bag is connected with hydraulic press.
Further, the extruding fixed plate is transportable, and it is solid to move extruding by the expansion of hydraulic bag
Fixed board plays fixation to extrusion head, at the same by the effect of hydraulic bag can adjust two extruding fixed plates between away from
From.
Wherein, the heating and thermal insulation layer uses water circulation heating, and the heating and thermal insulation layer includes water circulation heating tube,
One end connection input pipe of water circulation heating tube, the other end connection efferent duct of the water circulation heating tube, the pelletizing case
Side wall, which is provided with water heater box, water heater box, is provided with suction pump and heater box, and pump mouth and the heater box of the suction pump connect
Connect, the delivery port of the suction pump is connected with input pipe, the heater box is provided with external water pipe and circulating water pipe, circulating water pipe
It is connected with efferent duct.
Further, the heater box is provided with upper lid, and upper lid is demountable.
Wherein, the outer layer of the refrigerating layer is provided with the inside of the second insulating, the refrigerating layer and is provided with auxiliary heat conduction plate.
Further, the refrigerating layer uses silicon plate.
Further, what second insulating and the first insulating were used is two layers of asbestos and one layer of ring
Oxygen tree fat, epoxy resin is located between two layers of asbestos.
Wherein, the grain-cutter includes cutter hub and cutter head, and cutter hub is connected with rotating shaft, at least provided with two knives on the cutter hub
Head, cutter head is uniformly distributed on cutter hub.
Further, the rotating shaft is connected by bearing with pelletizing case.
Wherein, the inwall of the pelletizing chamber is provided with temperature sensing device.
A kind of production method using above-mentioned nylon chips production line, comprises the following steps：
Step one：By liquid caprolactam, initiator, delustering agent, stabilization agent and antioxidant in static mixer fully
Mixing, mixing temperature is 90~150 DEG C, and incorporation time is controlled in 1-3h；
Step 2：By well mixed composition successively through evaporating reactor and tubular reactor, slow heating makes combination
The temperature of thing progressively increases to more than 250 DEG C, controls between 250~270 DEG C, wherein the temperature of evaporation reactor for 260~
270 DEG C, the temperature of tubular reactor is 250~260 DEG C, and regulation controls the pressure for evaporating reactor and tubular reactor to be 2-
4bar, the reaction time is 3-5h；
Step 3：Pass through finished product reactor again, temperature control is at 230~250 DEG C, pressure 1-2bar, and time control is in 5-
7h, obtains nylon final product mix；
Step 4：Nylon final product mix is plastified through screw extruder and extruded, then is cut into nylon chips through pelleter；
Step 5：Nylon chips are extracted through extraction equipment again, are removed the low polymer in section, are made its low point
The content of sub- polymer is less than 0.03%, then processing is dried to wet section, obtains required nylon chips.
Further, the weight proportion of each component is as follows in step one：
Further, the initiator is aminocaproic acid.
Further, the antioxidant be symmetrical phenolic antioxidant, asymmetric phenolic antioxidant, phosphite ester kind antioxidant,
One kind in monothioester kind antioxidant, Hinered phenols antioxidant.
Pass through liquid caprolactam and initiator, antioxidant and stabilization agent compound action so that the nylon finally given into
The impurity of product is less, realizes that the accounting of final product mix small molecular polymer reaches less than 1%, improves the use effect of raw material
Rate.
Further, when being extracted in the step 5, the mixed proportion for controlling solution and nylon chips is (1-2)：1.
Further, extraction tower top EGR exports out the temperature control of solution at 60-80 DEG C in the step 5；Institute
State extraction tower bottom EGR and export out the temperature control of solution at 90-95 DEG C.
Further, when being dried in the step 5, the hot N2N2 temperature is 130~150 DEG C in drying system, described
Second hot N2The temperature of drying system is 140~160 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) nylon chips liquidate extraction twice by extraction tower top EGR, extraction tower bottom EGR, remove
It is equipped with most molecular weight polymers of slice surface, extraction tower top EGR and extraction tower bottom EGR
Molecular weight polymers in recirculated water are filtered by filter by filter, recirculated water is being rinsed extraction section
Preceding molecular weight polymers content is less than 0.005%, so as to realize the recycling of water；
(2) mixed, set by needling process by a certain percentage with polypropylene fiber using the polyester fiber of different thicknesses
The space structure using polyester fiber as network skeleton is counted into, then by calen-dering process, polypropylene fiber melting is attached on terylene fine
At the crossover node of dimension, the three dimensions filter frame of stabilized structure is formed, the small molecule that can effectively prevent diameter from being more than 0.3mm
Polymer passes through, and realizes the filtering to recirculated water；
(3) it is small in its recovered liquid because the first filter and the second filter are respectively for front and rear extraction and recovery liquid twice
The characteristics of content and diameter of Molecularly Imprinted Polymer are in the recovered liquid in different conditions, extraction tower top EGR is small point
Sub- polymer content is high, is relatively large in diameter, and the otherness of molecular weight polymers diameter is larger, and its diameter is in the small of more than 0.3mm
Molecule aggregation amount of substance accounting is more than 60%, therefore the target of the first filter is mainly realization to these diameters in more than 0.3mm
The filtering of molecular weight polymers；And be then molecular weight polymers content phase the characteristics of recovered liquid in the EGR of extraction tower bottom
To relatively low, diameter is smaller, and the otherness of molecular weight polymers diameter is smaller, boy segregation of its diameter more than 0.1~0.3
Compound quality accounting is more than 70%, therefore the target of the second filter is realized to diameter in more than 0.1mm molecular weight polymers
Filtering；
(4) hot N is passed through2The moisture content of wet slice surface is taken away, and passes through the first N2Filter removes N2In moisture content, then make
With the first N2Heater is to N2Concurrent heating is carried out, is realized to hot N2N in drying system2Recycling；
(5) second hot N2Designed in drying system by reducing temperature twice, make N2Temperature be reduced to below dew point, isolate
N2In moisture content, then by heating make N2Temperature reach 140~160 DEG C, from continuous drying tower bottom enter, to nylon chips
Carry out redrying；
(6) by designing condensation zone, N after cooling is made2Baffle plate with each section of condensation section in condensation zone is fully contacted,
N2In water stay in dew formed on baffle plate, so as to realize N2With the separation of moisture content；
(7) by setting N on cooling feed bin2Cooling system, not only realizes the cooling to dry chip finished product, Er Qieshi
Show drying again to dry chip, further improve the quality of final finished.
Brief description of the drawings
Fig. 1 is the present invention preferably production line structure chart；
Fig. 2 is the present invention preferably extraction equipment structure chart；
Fig. 3 is the present invention preferably drying device structure chart；
Fig. 4 is the present invention preferably condensation zone structure chart；
Fig. 5 is the present invention preferably pelleter structure chart；
Fig. 6 is the present invention preferably pelleter partial sectional view；
Fig. 7 is the side view of preferably grain-cutter of the invention.
Embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
It is as shown in Figure 1 preferably production line structure chart of the invention, includes static mixer 1, evaporation successively from front to back
Reactor 2, tubular reactor 3, finished product reactor 4, screw extruder 5, pelleter 6, extraction equipment 7 and drying device 8, such as scheme
Shown in 2, the extraction equipment 7 includes head tank 11, extraction tower 12, extraction tower top EGR 13, the circulation of extraction tower bottom
Device 14, pure hot water water supply installation 15 and centrifugal separating device 16, the head tank 11 are arranged on the top of extraction tower 12,
Extraction tower top EGR 13 is arranged on the upper area of extraction tower 12, the He of extraction tower bottom EGR 14
The pure hot water water supply installation 15 is arranged on the bottom of extraction tower 12, the charging aperture of centrifugal separating device 16 and the extraction
The bottom of tower 12 is connected, and the delivery port of centrifugal separating device 16 is connected with the water inlet of the pure hot water water supply installation 15.
Nylon chips liquidate extraction twice by extraction tower top EGR 13, extraction tower bottom EGR 14, go
Except most molecular weight polymers of slice surface, in extraction tower top EGR 13 and extraction tower bottom EGR 14
Filter is equipped with, the molecular weight polymers in recirculated water are filtered by filter, recirculated water is being rinsed extraction
The molecular weight polymers content before section is taken to be less than 0.005%, so as to realize the recycling of water.
As a preferred embodiment, extraction tower top EGR 13 includes the first delivery pump 17, first
Filter 18 and primary heater 19, the entrance of the first delivery pump 17 are connected with the top of the extraction tower 12, and described the
The entrance of one filter 18 is connected with first delivery pump 17 outlet, the entrance of primary heater 19 and first filter
18 outlets are connected, and the outlet of primary heater 19 is connected with the middle part of extraction tower 12.
As a preferred embodiment, first filter 18 is provided with acupuncture filter material, by 40~
80wt% polyester fiber is obtained with 20~60wt% polypropylene fiber through acupuncture, calen-dering process.
Using acupuncture filter material, mixed, acupuncture makes mutually to wind between fiber, formed with polypropylene fiber by polyester fiber
Space structure based on polyester fiber, recycles the melting of polypropylene fiber, it is consolidated polyester fiber crossover node
It is fixed, so as to form firm three dimensions filtration.
As a preferred embodiment, by optimizing design to acupuncture filter material, its filter efficiency is improved,
The porosity of the acupuncture filter material is 60~90%, and pore diameter is less than 0.3mm.The thickness of the acupuncture filter material is
0.5~1.5cm, grammes per square metre is 100~300g/cm2.The polyester fiber is distributed in three kinds in the range of 0.5~3D using fineness
Cross fiber type composition above, wherein fineness are more than 1.5D polyester fiber quality accounting more than 50%, polyester fiber
Length is 37~51mm.The polypropylene fiber fineness is 1-2D, preferably 2D；Length is 35~48mm, preferably 38mm.
Mixed, be designed into by needling process by a certain percentage with polypropylene fiber using the polyester fiber of different thicknesses
Using polyester fiber as the space structure of network skeleton, then by calen-dering process, polypropylene fiber melting is set to be attached on polyester fiber
At crossover node, the three dimensions filter frame of stabilized structure is formed, the small molecule that can effectively prevent diameter from being more than 0.3mm polymerize
Thing passes through, and realizes the filtering to recirculated water.
As a preferred embodiment, extraction tower bottom EGR 14 includes secondary heater 21, it is described
The entrance of secondary heater 21 is connected with the extraction tower 12 close to bottom sides, the outlet of secondary heater 21 and the extraction
The bottom of tower 12 is connected.
As a preferred embodiment, the pure hot water water supply installation 15 include hopper 22, the second delivery pump 23,
Second filter 24, the water inlet of hopper 22 is connected with the delivery port of centrifugal separating device 16, and the hopper 22 goes out
The mouth of a river is connected with the water inlet of the second delivery pump 23, the water inlet of the second filter 24 and the water outlet of the second delivery pump 24
Mouth is connected, and the delivery port of the second filter 24 is connected with the bottom of extraction tower 12.
Second filter 24 using and the first filter identical structure and material, but its fibre fineness for using and hole
Gap diameter is respectively less than the first filter, and the fineness of preferred polyester fiber is distributed in more than three kinds in the range of 0.5~3D here
Cross fiber type is constituted, and wherein polyester fiber quality accounting of the fineness less than 1.5D is more than 80%, and the length of polyester fiber is
37~51mm, and the porosity of the acupuncture filter material is 60~90%, pore diameter is less than 0.1mm.Due to the first filtering
Device and the second filter are respectively for front and rear extraction and recovery liquid twice, and the content and diameter of its recovered liquid small molecular polymer are equal
In different conditions, it is that molecular weight polymers content is high the characteristics of recovered liquid in the EGR of extraction tower top, is relatively large in diameter,
And the otherness of molecular weight polymers diameter is larger, its diameter exceedes in more than 0.3mm molecular weight polymers quality accounting
60%, thus the target of the first filter be mainly realize to these diameters more than 0.3mm molecular weight polymers filtering；And extract
The characteristics of taking the recovered liquid in the EGR of tower bottom is then that molecular weight polymers content is relatively low, and diameter is smaller, and small point
The otherness of sub- polymer diameter is smaller, and boy of its diameter more than 0.1~0.3 divides polymer quality accounting more than 70%,
Therefore the target of the second filter then be realize to diameter more than 0.1mm molecular weight polymers filtering.
As a preferred embodiment, the bottom water inlet of extraction tower 12 is provided with changeover valve 25.
The present invention preferably drying device structure chart is illustrated in figure 3, the drying device 8 includes connecting from top to bottom successively
Continuous drying tower 31, star-like drawing mechanism 32, cooling feed bin 33, the continuous drying top of tower 31 is provided with hot N2Drying system 34,
The hot N2Drying system 34 includes the first N2Filter 37, first circulation blower fan 38, the first N2Heater 39, the first N2
The entrance of filter 37 is connected with the continuous drying top of tower 31, the entrance of first circulation blower fan 38 and the first N2Cross
The outlet of filter 37 connection, the first N2The entrance of heater 39 is connected with the first circulation blower fan 38 outlet, the first N2Plus
The hot outlet of device 39 in the middle part of the side wall of connection drying tower 31 with connecting.Pass through hot N2The moisture content of wet slice surface is taken away, and is passed through
First N2Filter removes N2In moisture content, reuse the first N2Heater is to N2Concurrent heating is carried out, is realized to hot N2In drying system
N2Recycling.
As a preferred embodiment, being additionally provided with the second hot N on the continuous drying tower 312Drying system 35, institute
State the 2nd N2Drying system 35 includes the first heat sink 40, the second heat sink 41, the N of second circulation blower fan 46 and the 2nd2Heating
Device 42, the entrance of the first heat sink 40 is connected with the first circulation blower fan 38 outlet, and second heat sink 41 enters
Mouthful export and to be connected with first heat sink 40, the entrance of second circulation blower fan 46 is exported with institute the second heat sink of art 41
It is connected, the 2nd N2The entrance of heater 42 is connected with the second circulation blower fan 46 outlet, the 2nd N2Heater 42 goes out
Mouth is connected with the continuous drying bottom of tower 31.Second hot N2Designed in drying system by reducing temperature twice, make N2Temperature reduction
To below dew point, N is isolated2In moisture content, then by heating make N2Temperature reach 140~160 DEG C, from continuous drying bottom of towe
Portion enters, and redrying is carried out to nylon chips.
As a preferred embodiment, second heat sink 41 is provided with condensation zone 47, the condensation zone 47
It is made up of a plurality of in the condensation passage 48 of bending, every section of condensation passage 48 is constituted by multistage condensation section 49, phase
Angle between adjacent two sections of condensation section 49 is 30~60 °.By designing condensation zone, make N after cooling2It is in condensation zone and each
The baffle plate of section condensation section is fully contacted, N2In water stay in dew formed on baffle plate, so as to realize N2With the separation of moisture content.
As a preferred embodiment, the cooling feed bin 33 is provided with N2Cooling system 36, the N2Cooling system
36 include the 2nd N2Filter 43, cooling blower 44 and N2Cooler 45, the 2nd N2The entrance of filter 43 is expected with the cooling
The top of storehouse 33 is connected, the entrance of cooling blower 44 and the 2nd N2The outlet of filter 43 is connected, the N2The entrance of cooler 45
It is connected with the cooling blower 44 outlet, the N2Cooler 45 is exported to be connected with cooling feed bin 33 bottom.By cold
But N is set on feed bin2Cooling system, not only realizes the cooling to dry chip finished product, and also achieve to dry chip again
Dry, further improve the quality of final finished.
As a preferred embodiment, the first N2Provided with one layer of moisture content sorbing material in filter 37, use
Carbon fibre composite is as skeleton, and in surface attachment activated carbon granule, and the carbon fibre composite uses needling process,
Its thickness in 1cm~5cm, pore radius control in below 0.5mm, wherein the size control of activated carbon granule 0.05~
0.1mm, it accounts for less than the 30% of carbon fibre composite gross mass, preferably 25%.
Shown in Fig. 5 and Fig. 6, pelleter is provided with screw extruder 5, and the bottom of screw extruder 5 is provided with extruder head 52, extrusion
First 52 are connected with pelleter, and pelleter is included in pelletizing case 53, motor 55 and control cabinet 56, the pelletizing case 53 provided with auxiliary
Protected in lock chamber 60, the first insulating 61, pelletizing chamber 70 and grain-cutter 74, first insulating 71 provided with heating
Warm layer, heating and thermal insulation layer inner side is provided with heat-conducting plate, and heat-conducting plate is connected with auxiliary lock chamber 60, the auxiliary bottom of lock chamber 60 and
Pelletizing chamber 70 is connected, and the grain-cutter 74 is located in pelletizing chamber 70, the top of grain-cutter 74 and the bottom of auxiliary lock chamber 60
Tangent, the nylon raw material that the extruder head 52 being easy in compensated cavity 60 is extruded more preferably can be more accurately cut, the grain-cutter
74 pass pelletizing case 53 by rotating shaft 76 is connected with motor 55, and the inwall of the pelletizing chamber 70 is provided with refrigerating layer 72, refrigeration
Layer 52 can carry out refrigerating operation so that the temperature reduction in pelletizing chamber 70, it is ensured that the normal operation of pelletizing.
As a preferred embodiment, as shown in fig. 6, the extruder head 52 be located at auxiliary lock chamber 60 in, it is described
Auxiliary lock chamber 60 left and right sides is respectively provided with an extruding fixed plate 59, the outside connection hydraulic bag 58 of extruding fixed plate 59, hydraulic pressure
Capsule 58 is connected with hydraulic press 57, and extruding fixed plate 59 is transportable, can move crowded by the expansion of hydraulic bag 58
Pressure fixed plate 59 plays fixation to extrusion head, while can adjust two extruding fixed plates 59 by the effect of hydraulic bag 58
The distance between, the effect of the extruder head 52 of fixed different-diameter is reached, the PVC pelletizings at the aspect of screw extruder 5 are expanded
The scope of application of machine.
As a preferred embodiment, as shown in fig. 6, heating and thermal insulation layer uses water circulation heating, water
The boiling point of circulating-heating reclaimed water is 100 DEG C, and can avoiding heating and thermal insulation layer, temperature will not too high or mistake when carrying out preheating insulation
It is low, it is to avoid not easy-formation after liquid extrusion when temperature is too high, while raw material is produced on extruder head 52 and coagulated when avoiding temperature too low
The phenomenon blocked is tied, the heating and thermal insulation layer includes water circulation heating tube 69, one end connection input pipe of water circulation heating tube 69
63, the other end connection efferent duct 62 of the water circulation heating tube 69, the side wall of the pelletizing case 53 is provided with water heater box 54,
Suction pump 64 and heater box 65 are provided with water heater box 54, the pump mouth of the suction pump 64 is connected with heater box 65, described to take out
The delivery port of water pump 64 is connected with input pipe 63, and the heater box 65 is provided with external water pipe 67 and circulating water pipe 68, recirculated water
Pipe 68 is connected with efferent duct 62, by by efferent duct 62 and circulating water pipe 68 by by the surplus warm water having surplus heat after again
Heated in injection heating case 65 so that remaining heat can be utilized again in warm water, reduction heats the water to same
Required heat during temperature, reduces resource consumption, strengthens the effective rate of utilization of resource.
As a preferred embodiment, the heater box 65 be provided with upper lid 66, upper lid 66 be it is demountable, this
Planting to set can be easy to operating personnel to carry out cleaning maintenance to the inwall of heater box 65, it is ensured that the normal operation of heater box 65, keep away
Exempt from incrustation scale of generation etc. in heater box 65 to impact heat transfer.
As a preferred embodiment, the outer layer of the refrigerating layer 72 is provided with the second insulating 79, the system
The inner side of cooling layer 72 is provided with auxiliary heat conduction plate 71, and auxiliary heat conduction plate 71 can both conduct low temperature so that the temperature drop in pelletizing chamber 70
It is low so that nylon fast shaping after pelletizing drops, the probability that raw material is sticked on grain-cutter 74 is reduced, while auxiliary heat conduction plate
71 can play a part of protection to refrigerating layer 72, it is to avoid particle is acted on by inertia force and the revolving force of grain-cutter 74 during pelletizing
Splash and struck on refrigerating layer 72 everywhere, it is ensured that the service life of refrigerating layer 72.
As a preferred embodiment, the refrigerating layer 22 uses silicon plate, silicon plate, which is powered, to freeze, and enhances this
The practicality of pelleter.
As a preferred embodiment, the insulating 61 of the second insulating 79 and first use is equal
Two layers of asbestos and one layer of epoxy resin, epoxy resin is located between two layers of asbestos, it is this it is sandwich be designed to preferably
It is thermally shielded insulation.
As a preferred embodiment, as shown in fig. 7, the grain-cutter 74 includes cutter hub 77 and cutter head 78, cutter hub
77 are connected with rotating shaft 76, and at least provided with two cutter heads 78 on the cutter hub 77, cutter head 78 is uniformly distributed on cutter hub 77 so that
Nylon chips it is in the same size, it is ensured that the effect of pelletizing.
As a preferred embodiment, the rotating shaft 76 is connected by bearing 75 with pelletizing case 53, facilitate rotating shaft 76
Rotation.
As a preferred embodiment, the inwall of the pelletizing chamber 70 is provided with temperature sensing device 73, it is easy to pair
Temperature in pelletizing chamber 70 is monitored, it is ensured that reach temperature needed for pelletizing.
The operation principle of pelleter of the present invention is：Extruder head 52 is inserted into auxiliary lock chamber 60, hydraulic press 57
Control hydraulic bag 58 starts expansion so that inwardly extruding forms solid to extruder head to the extruding fixed plate 59 of auxiliary lock chamber 60 both sides
Fixed, after the completion of fixing, heater box 65 is started working, and suction pump 64 is taken out hot water out of heater box 65 and followed by input pipe 63 into water
In ring heating tube 69, water circulation heating tube 19 is transferred heat into auxiliary lock chamber 60 by heat-conducting plate and is applied to extruder head 52
On, play a part of preheating insulation to extruder head 52, the silicon plate of the control refrigerating layer 72 of control cabinet 56, which is powered, starts refrigeration, leads to simultaneously
Cross auxiliary heat conduction plate 71 to transmit so that the temperature reduction in pelletizing room 70, sensed using temperature sensing device 73 in pelletizing chamber 70
Temperature, when temperature drops to 10 DEG C, control cabinet 56 control motor 55 begin through rotating shaft 76 drive grain-cutter 74 rotate,
Cutter head 78 is also rotated with, and passes through the purpose for being constantly rotated up to continuous pelletizing of cutter head 78.
The pelleter it is rational in infrastructure, by heating and thermal insulation layer be located in pelletizing case 53, it is to avoid heated extrusion head 52 extrusion
Influenceed to produce to condense by outer low temperature during PVC raw materials and produce blocking, it is ensured that the normal work of extruder head 52, simultaneously, it is to avoid
Restriction is produced to the thickness of extruder head 52 when heating and thermal insulation layer is located at into extrusion 2, the target of heating and thermal insulation layer is reduced
Scope；Freezed in the present invention from silicon plate, can effectively avoid wind refrigeration modes from causing nylon chips top layer easy
Embrittlement, the phenomenon of the nylon sputters particles cut, while the particle that it also avoid cutting during water cooling needs carrying out drying behaviour
Make step, simplify operation and cause pelletizing enhanced convenience, operating efficiency is higher.
The present embodiment also provides a kind of production method using above-mentioned nylon chips production line, comprises the following steps：
Step one：By liquid caprolactam, initiator, delustering agent, stabilization agent and antioxidant in static mixer fully
Mixing, mixing temperature is 90~150 DEG C, and incorporation time is controlled in 1~3h；
Step 2：By well mixed composition successively through evaporating reactor and tubular reactor, slow heating makes combination
The temperature of thing progressively increases to more than 250 DEG C, controls between 250~270 DEG C, wherein the temperature of evaporation reactor for 260~
270 DEG C, the temperature of tubular reactor is 250~260 DEG C, and regulation controls the pressure for evaporating reactor and tubular reactor to be 2-
4bar, the reaction time is 3-5h；
Step 3：Pass through finished product reactor again, temperature control is at 230~250 DEG C, 1~2bar of pressure, and time control is 5
~7h, obtains nylon final product mix；
Step 4：Nylon final product mix is plastified through screw extruder and extruded, then is cut into nylon chips through pelleter；
Step 5：Nylon chips are extracted through extraction equipment again, are removed the low polymer in section, are made its low point
The content of sub- polymer is less than 0.03%, then processing is dried to wet section, obtains required nylon chips.
The preferred embodiments of the present invention have shown and described in described above, as previously described, it should be understood that not office of the invention
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and
Environment, and can be changed in invention contemplated scope described herein by the technology or knowledge of above-mentioned teaching or association area
It is dynamic., then all should be appended by the present invention and the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention
In scope of the claims.
Claims (10)
1. a kind of high-cleanness nylon chips drying device, it is characterised in that include successively from top to bottom continuous drying tower, it is star-like go out
Expect device, cooling feed bin, the continuous drying tower top is provided with hot N2Drying system, the hot N2Drying system includes the first N2
Filter, first circulation blower fan, the first N2Heater, the first N2Filter inlet is connected with the continuous drying top of tower,
The first circulation fans entrance and the first N2Filter outlet is connected, the first N2Calorifier inlets and described first
Circulating fan outlet connection, the first N2Heater outlet is dried with the connection and connected in the middle part of tower side wall, the first N2Cross
Provided with one layer of moisture content sorbing material in filter.
2. a kind of high-cleanness nylon chips drying device according to claim 1, it is characterised in that the moisture content adsorption material
Material uses carbon fibre composite as skeleton, and in surface attachment activated carbon granule.
3. a kind of high-cleanness nylon chips drying device according to claim 2, it is characterised in that the carbon fiber is combined
Material uses needling process, and its thickness controls the size in below 0.5mm, wherein activated carbon granule in 1cm-5cm, pore radius
Control is in 0.05-0.1mm.
4. a kind of high-cleanness nylon chips drying device according to claim 3, it is characterised in that the continuous drying tower
On be additionally provided with the second hot N2Drying system, the 2nd N2Drying system includes the first heat sink, the second heat sink, second
Circulating fan and the 2nd N2Heater, the first heat sink entrance is connected with the first circulation fan outlet, and described
Two heat sink entrances are connected with first heat sink outlet, and the second circulation fans entrance is filled with the described second cooling
Put outlet to be connected, the 2nd N2Calorifier inlets are connected with the second circulation fan outlet, the 2nd N2Heater outlet
It is connected with the continuous drying tower bottom.
5. a kind of high-cleanness nylon chips drying device according to claim 4, it is characterised in that the second cooling dress
Put provided with condensation zone.
6. a kind of high-cleanness nylon chips drying device according to claim 5, it is characterised in that the condensation zone is by more
Bar is constituted in the condensation passage of bending, and every section of condensation passage is by multistage condensation section composition.
7. a kind of high-cleanness nylon chips drying device according to claim 6, it is characterised in that adjacent two sections of condensation section
Between angle be 30~60 °.
8. a kind of high-cleanness nylon chips drying device according to claim 7, it is characterised in that on the cooling feed bin
Provided with N2Cooling system, the N2Cooling system includes the 2nd N2Filter, cooling blower and N2Cooler, the 2nd N2Filtering
Device entrance at the top of the cooling feed bin with being connected, the cooling blower entrance and the 2nd N2Filter outlet is connected, the N2
Cooler entrance is connected with cooling blower outlet, the N2Cooler outlet is connected with the cooling bin bottom.
9. a kind of high-cleanness nylon chips drying device according to claim 8, it is characterised in that the activated carbon granule
Account for less than the 30% of carbon fibre composite gross mass, preferably 25%.
10. a kind of high-cleanness nylon chips production line, including the drying device as described in claim any one of 1-9, its feature
Be, from front to back successively include static mixer, evaporation reactor, tubular reactor, finished product reactor, screw extruder,
Pelleter and extraction equipment, the drying device are arranged on the extraction equipment rear.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388467.1A CN107053558A (en) | 2017-05-27 | 2017-05-27 | A kind of high-cleanness nylon chips drying device and production line |
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|---|---|---|---|
| CN201710388467.1A CN107053558A (en) | 2017-05-27 | 2017-05-27 | A kind of high-cleanness nylon chips drying device and production line |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3241248A (en) * | 1960-07-23 | 1966-03-22 | Glanzstoff Ag | Drying method and apparatus |
| DE19729302A1 (en) * | 1997-07-09 | 1999-01-14 | Basf Ag | Deodorising of freshly cut polypropylene chips |
| CN2833487Y (en) * | 2005-10-18 | 2006-11-01 | 高力热处理工业股份有限公司 | Heat exchanger structure with air drying function |
| CN104387580A (en) * | 2014-11-05 | 2015-03-04 | 湖南金帛化纤有限公司 | Nylon-6 slice production method capable of improving polymerization conversion rate |
| CN204193755U (en) * | 2014-10-08 | 2015-03-11 | 东莞信易电热机械有限公司 | A kind of rotary-type mould dehumidifier |
| CN104896902A (en) * | 2014-10-13 | 2015-09-09 | 江苏弘盛新材料股份有限公司 | Polyamide-6 granula nitrogen drying heat exchange system |
| CN204767887U (en) * | 2015-07-08 | 2015-11-18 | 航天新长征电动汽车技术有限公司 | A air purifier for fuel cell power |
| CN205933246U (en) * | 2016-07-01 | 2017-02-08 | 成都华瑞新能科技有限公司 | Carbon dioxide dewatering device |
| CN207156281U (en) * | 2017-05-27 | 2018-03-30 | 江苏华洋尼龙有限公司 | A kind of high-cleanness nylon chips drying device and production line |
-
2017
- 2017-05-27 CN CN201710388467.1A patent/CN107053558A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3241248A (en) * | 1960-07-23 | 1966-03-22 | Glanzstoff Ag | Drying method and apparatus |
| DE19729302A1 (en) * | 1997-07-09 | 1999-01-14 | Basf Ag | Deodorising of freshly cut polypropylene chips |
| CN2833487Y (en) * | 2005-10-18 | 2006-11-01 | 高力热处理工业股份有限公司 | Heat exchanger structure with air drying function |
| CN204193755U (en) * | 2014-10-08 | 2015-03-11 | 东莞信易电热机械有限公司 | A kind of rotary-type mould dehumidifier |
| CN104896902A (en) * | 2014-10-13 | 2015-09-09 | 江苏弘盛新材料股份有限公司 | Polyamide-6 granula nitrogen drying heat exchange system |
| CN104387580A (en) * | 2014-11-05 | 2015-03-04 | 湖南金帛化纤有限公司 | Nylon-6 slice production method capable of improving polymerization conversion rate |
| CN204767887U (en) * | 2015-07-08 | 2015-11-18 | 航天新长征电动汽车技术有限公司 | A air purifier for fuel cell power |
| CN205933246U (en) * | 2016-07-01 | 2017-02-08 | 成都华瑞新能科技有限公司 | Carbon dioxide dewatering device |
| CN207156281U (en) * | 2017-05-27 | 2018-03-30 | 江苏华洋尼龙有限公司 | A kind of high-cleanness nylon chips drying device and production line |
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