CN105837853A - Cleaning and pretreatment process for waste textiles containing polyester fibers - Google Patents
Cleaning and pretreatment process for waste textiles containing polyester fibers Download PDFInfo
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- CN105837853A CN105837853A CN201610193617.9A CN201610193617A CN105837853A CN 105837853 A CN105837853 A CN 105837853A CN 201610193617 A CN201610193617 A CN 201610193617A CN 105837853 A CN105837853 A CN 105837853A
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- cleaning
- compacting
- containing washing
- waste textile
- waste
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a cleaning and pretreatment process for waste textiles containing polyester fibers, belonging to the technical field of recovery or processing of waste materials. According to the process, the waste textiles containing polyester fibers are cleaned in the form of broken segments and then dehydrated to remove impurities and oiling agents; after cleaning, oil content is controlled to be no more than 0.1%; then, the broken segments of the waste textiles enter a subsequent compacting procedure for compaction, and then extruding, heating and plasticizing are successively carried out on the broken segments; and finally, the broken segments enters a homogenizing and tackifying procedure. The cleaning and pretreatment process is applied to recycling of polyester products and has the advantages of stable production, wide sources of raw materials, reliable product quality, low energy consumption, etc.
Description
Technical field
The present invention relates to a kind of containing washing waste textile cleaning pretreating process, belong to recovery or the process technology neck of waste material
Territory.
Background technology
PET polyester due to have good physical and chemical stability, cost performance, stretchable performance and become in the world first
Synthesize greatly macromolecular material, have the polyester of ten-million-ton scale to enter every year and take field.And as the PET industry in petrochemical industry downstream, one
Aspect is faced with the present situation that petroleum resources are non-renewable and increasingly exhausted, on the other hand, is difficult to degrade under polyester naturalness, number
Measure huge waste and old terylene textile and become solid waste, bring huge burden to environment.Therefore, how to waste and old poly-
Ester articles reclaims, it is achieved the Efficient Cycle of resource utilizes, and minimizing environmental pollution becomes PET industry and needs asking of solution badly
Topic.
The principle that waste polyester reclaiming should be acted on and be recycled maximization, removal process cleans is carried out.Poly-
Ester regeneration can be divided into Physical and chemical method regeneration, and Physical refers to reclaim by cutting off, pulverize, add the operations such as heat fusing
Regeneration；Chemical recovery is by the polyester depolymerization of solid-state, is converted into less molecule, intermediate raw material, or is converted into monomer, so
After polycondensation again.Chemical recovering method polyester can reach the level of primary polyester in theory, and can carry out chemical modification, but is limited to
Decolouring, the equilibrium problem of the technology such as refined and cost, and fail large scale application.
Physical has features such as investment is saved, processing cost is low, but due to spinning oil present in waste and old polyester,
The impurity such as printing and dyeing assistant and result in the recycled polyester degree of polymerization reduce, form and aspect deteriorate, limit the purposes of recycled polyester.Zhejiang is green
In space environmental protection company limited granted patent 201320600503.3,201520531917.4, the most cleaned of employing can be reclaimed
Process route in, the programs such as polyester waste material is the most cleaned, dry, saved water resource, yet with vacuum draw efficiency with
And surface active agent composition is difficult to the problems such as volatilization in spin finish aid, final products colour, intrinsic viscosity are the most not ideal enough.And
Conventional physical method removal process is cleaned needs to consume great lot of water resources, such as, during manufacturing foam material, product needed per ton disappears
Consume more than 4 tons of water；Ministry of Industry and Information's No. 40 file " regeneration chemical fibre (terylene) industry standard condition " middle requirement in 2015 " regenerates
Chemical fibre (polyester filament) (hereinafter referred to as regenerated terylene long filament) yearly productive capacity is not less than 20,000 tons ", " regenerated terylene long filament
Production, fresh water water withdrawal be less than 0.70 ton/ton ", " recycling rate of water used by the industries is not less than 86% ".
On the one hand, physical recovering method needs to be carried out and improve polyester quality, on the other hand, needs to limit removal process
In energy consumption, water consumption, based on this, make subject application.
Summary of the invention
In order to overcome the drawbacks described above existing for the recovery of existing terylene goods, the present invention provides a kind of low energy consumption, produces surely
Determine, can realize washing waste textile cleaning pretreating process containing of regeneration.
For achieving the above object, the technical scheme that the present invention takes is as follows:
Cleaning pretreating process containing washing waste textile, containing washing after waste textile is carried out with broken section of form, dehydration is removed
Impurity and oil preparation, control oil content≤0.1% after cleaning, is re-fed in rear road compacting operation after drying, and extruding heats up after plastifying and increases
Viscous.
Further, as preferably:
Described containing wash waste textile carry out successively washing, primary dewatering, rinsing, second dehydration, remove the removal of impurity and oil preparation, clearly
Oil content≤0.1% is controlled after washing.
Described containing wash waste textile the most once wash, primary dewatering, rinsing, secondary washing, second dehydration,
Remove the removal of impurity and oil preparation, after cleaning, control oil content≤0.1%.Described broken segment length is 1-10cm.
Described cutting compacting refers to broken section of high speed rotating on the cutterhead of cutting compacting machine, it is achieved compacting process.
Described cutterhead rotating speed controls in the range of 100-600rmp, and in compacting process, compaction is by cutterhead rotating speed control
System, the height of materials in current feedback compacting machine, control between 250-300A.
The application is applied to terylene locate in advance containing the recovery and rinsing washing the terylene goods such as waste textile, Polyester Textiles
Reason, its operation principle is as follows:
Terylene goods, after hydraulic platform and hopper are supplied, form broken section of moderate length after combing is cut off, and these broken section is sent
Enter in matting, first carry out washing and remove impurity, then carry out rinsing the oil preparation removing broken section surface, be then centrifuged taking off
Water, controls oil content below 0.1%, finally dries to moisture within 0.5%；Broken section of feeding after cleaning, drying
Cutting compacting machine in, in the high-speed rotation of cutterhead, broken section with the stationary knife interaction process in cutterhead, compacting machine tank body
In complete compacting process, meanwhile, friction produces substantial amounts of heat, it is ensured that containing washing broken section of temperature >=100 DEG C of waste textile, broken section
Volatilizable thing evaporation in the moisture of upper residual and oil preparation, under cutting compacting machine intrinsic pressure power effect, broken section is gradually compacted and carries out
Plastifying, and upper strata charging does not affect the compacting of broken section of lower floor, therefore feeds and is compacted to carry out simultaneously, broken section after compacting through cutting
Cut the screw rod bottom compacting machine to deliver to filter after driving screw extrusion molten, more intensified be pumped to homogenizing thickening still in homogenizing
Thickening, recycles after the pelletizing of Cast Strip.
Compared with conventional polyester way of recycling, having the beneficial effect that of technique provided herein:
(1) energy consumption is low, and yield is high, and automaticity is high.In the application, feed is by mechanical hand, carding mechanism and conveyer
Structure realizes, and material is constantly advanced by mechanical hand, makes feed abundance, rational height gradual change in carding mechanism all the time in hopper
Tooth-shape structure, this tooth-shape structure will contain to be washed waste textile and hauls out, and is allowed to move forward with it, and in moving process
Carry out regular combing, make containing washing waste textile along direction of advance marshalling, therefore, mechanical hand, carding mechanism and conveyer
It is configured to the form of automatic feed, automatic carding；Reciprocal cutting knife, for moving up and down, achieves fiber during moving up and down
Cut off, with conventional tear fracture (such as the role of tear of hobboing cutter, patent in the disintegrating machine of patent 201320600503.3
The grinding role of tear of stationary knife, moving knife in 201520531917.4) mode compares, and the application uses cut-out mode, it is to avoid this
The defects such as fracture irregular, breaking length is uncontrollable, the fiber winding that kind is torn, reciprocating cutting frequency is controlled and frequency is higher, its
Yield can reach 3-8t/h, and the yield of unit interval is about more than 2 times of usual manner, and uses crushing cutter/disintegrating machine energy consumption
Relatively big, and energy consumption is controlled at reduced levels by the reciprocal cut-out mode that the application is used, and is about conventional grinding mode power consumption
1/4。
(2) multiple processes removing impurity such as moisture and spinning oil, has widened waste material source.In waste product, oil, water contain
Amount will result directly in polyester and seriously degrades, and form and aspect deteriorate, thus limit the purposes of reconstituted product, and reclaim profit in end-product
Content and two aspect factors are relevant, self profit content in first raw material, and it two is removal effect in technique, in the application,
Enter broken section that polyester article is 1-10cm of matting, can fully be fully contacted with water and purificant, matting
Completing directly to be controlled below 0.1% by oil content, drying can use infrared drying, while hot blast feeding, by aqueous
Amount controls below 0.5%；Meanwhile, in follow-up cutting compacting process, heat produced by high speed rotating is further by broken section
In moisture and the volatilizable thing of oil preparation steam；Vacuum draw mouth, further imurity-removal composition it is provided with in follow-up driving screw.
Therefore, the application is provided with the operation of multiple tracks imurity-removal, the waste and old polyester of recyclable different impurities content.
(3) reuse of water resource can be realized, reduce water and pollute.In the application, cleaning system can arrange reverse osmosis knot
Structure (such as reverse osmosis membrane, deionization film etc.) is as water circulation mechanism, after this reverse osmosis structure may be provided at rinsing, it is possible to arrange
After secondary is washed, after rinse water is carried out reverse-osmosis treated by it, clean water reuse is to once washing, rinse or secondary water
Place's of washing (reverse osmosis structure can not remove purificant, is now used at rinsing optimal), can complete the circulation of water resource, in theory
Can realize without drain operation, therefore its water consumption proposed well below GB a ton is containing the mark washing one ton of water of waste textile
Standard, and solve the problem that water pollutes.
Accompanying drawing explanation
Fig. 1 is the structural representation of broken section of shaped device in the present invention；
Fig. 2 is the structural representation of carding mechanism in cutting machine in the present invention；
Fig. 3 is the process chart of comparative example 1；
Fig. 4 is the process chart of comparative example 2.
Label in figure: A. terylene goods；B. combing product；C. pre-compacted product；The most broken section；1. hydraulic platform；2.
Hopper；3. tooth-shape structure；4. conveying mechanism；5. pressure roller；6. reciprocal cutting knife.
Detailed description of the invention
Embodiment 1
The present embodiment cleans pretreating process containing washing waste textile, and in conjunction with Fig. 1, fluffy mixed and disorderly terylene goods A is with broken section of D-shaped
Formula is carried out, dewatered drying, and control moisture, below 0.5%, is sent in cutting compacting operation, extruding intensification plasticizing after compacting,
Thickening..
Wherein, in conjunction with Fig. 1 and Fig. 2, it is breaking in cutting machine and completes, in cutting machine, be provided with mechanical hand, carding mechanism, defeated
Sending mechanism and reciprocal cutting knife 6, mechanical hand is positioned at reciprocal cutting knife front, conveying mechanism then between mechanical hand and reciprocal cutting knife,
Mechanical hand will contain to be washed waste textile and is advanced at carding mechanism, and carding mechanism is provided with tooth-shape structure 3, and tooth-shape structure 3
Highly successively decreasing, carding mechanism moves back and forth and carries out combing pretreatment, forms the combing product B of opposed flattened, this combing product B warp
Pressure roller 5 pre-compacted forms relatively compact pre-compacted product C, and pressure roller 5 is by controlling to contain with the relative rotation speed of conveying mechanism 4 simultaneously
Wash waste textile gait of march.In the present embodiment, conveying mechanism 5 is conveyer belt；The frequency of reciprocal cutting knife is 10-600 beat/min
Clock, pressure roller rotating speed is according to adjustable containing the requirement washing waste textile shearing length, it is ensured that containing washing broken segment length 1-of waste textile
10cm.Broken section of D is carried out, dewatered drying, controls moisture below 0.5%, sends in cutting compacting operation, after supercharging plasticizing
Thickening.Wherein, clean and include washing, primary dewatering, rinsing, second dehydration, remove the removal of impurity and oil preparation, after cleaning, control oil content
≤0.1%。
Compacting refers to broken section of high speed rotating on the cutterhead of compacting machine, is progressively compacted；Cutterhead rotating speed controls at 100-
In the range of 600rmp, in compacting process, compaction is controlled by cutterhead rotating speed, the height of materials in current feedback compacting machine, controls
Between 250-300A.In conjunction with Fig. 1, hydraulic platform 1 tilts along direction shown in arrow so that it is on terylene goods (contain with terylene
As a example by washing waste textile) A pours in hopper 2, under the progradation of mechanical hand, moves forward at carding mechanism, combing
The height of the tooth-shape structure 3 in mechanism from high to low, along with moving back and forth of tooth-shape structure 3, is pulled containing washing waste textile
And gradually methodization, it is to avoid while solid accumulation, complete containing the combing washing waste textile, the combing product B after combing
The regular form consistent in direction；Combing product B continues to be fed forward along with conveying mechanism 4, due to combing product B now relatively
For fluffy, it be provided above pressure roller 5(pressure roller 5 through conveying mechanism 4 and rotate in the direction of the arrow), pressure roller 5 is by pre-for fluffy combing product B
Compacting secondary smooth formation pre-compacted product C, simultaneously under the clamping action of pressure roller 5 and conveying mechanism 4, pre-compacted product C
Pace controlled, now, reciprocal cutting knife 6 pumps along its corresponding arrow, pre-compacted product C
It is cut into the broken section of D that length is consistent；Broken section of D sends in matting, first carries out washing and removes impurity, then carries out rinsing removal
The oil preparation on broken section of D surface, is then centrifuged dehydration, is controlled by oil content below 0.1%, finally dry to moisture
Within 0.5%；Broken section of D after cleaning, drying sends in cutting compacting machine, in the high-speed rotation of cutterhead, and broken section of D and cutter
Completing cutting in dish interaction process, meanwhile, kinetic energy is converted into heat energy, and on broken section of D, moisture and the oil preparation of residual are evaporated,
Under cutting compacting machine intrinsic pressure power effect, broken section of D is gradually compacted and plastifies, and upper strata charging does not affect moulding of broken section of lower floor
Changing, therefore feed and can carry out with plastifying simultaneously, the screw rod bottom the cleaved compacting machine of fluid that plasticizing is formed delivers to homogenizing thickening
It is balanced in still and viscosifies, secondary can be put into and utilize.
During aforesaid operations, feed is realized by mechanical hand, carding mechanism and conveying mechanism 4, and mechanical hand is by thing
Material constantly advances, and makes in hopper 2 feed all the time sufficient, the tooth-shape structure 3 of rational height gradual change in carding mechanism, this tooth
Shape structure 3 will contain washs waste textile hauling-out, and is allowed to move forward with it, and carries out regular combing in moving process, makes
Containing washing waste textile all in identical tendency, therefore, mechanical hand, carding mechanism and conveying mechanism 4 form automatic feed, automatically
The form of combing；Reciprocal cutting knife 6 pumps, and achieves the cut-out of fiber during moving up and down.
In waste product, oil preparation, moisture content will result directly in polyester and seriously degrades, and form and aspect deteriorate, thus limit reconstituted product
Purposes.In the application, enter the broken section of D that polyester article is 1-10cm of matting, can fully fill with water and purificant
Tap is touched, and oil content can directly be controlled below 0.1% by the completing of matting, and drying can use infrared drying, and hot blast send
While material, by water content control below 0.5%；Meanwhile, in follow-up cutting compacting process, produced by high speed rotating
Moisture in broken section of D and oil are steamed by heat further, deep removal profit, the most permissible by cleaning and cut compacting in technique
The fully oil in removing terylene goods, water, therefore, terylene goods material quality is not limited by the technique that the application is used, and it comes
Source is more extensive, and the terylene goods related to all can put into recovery.
In compacting operation, the raw material carrying out being compacted is broken section of D-shaped state, and in compacting process, the length of this 1-10cm is divided
Cloth the most broken section of D is easier to compacting, and bulk density is uniform, it is to avoid the yield caused by fluff bulk, density fluctuation is unstable.
Embodiment 2
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: clean include once washing, primary dewatering,
Rinsing, secondary washing, second dehydration, remove the removal of impurity and oil preparation, controls oil content≤0.1% after cleaning.
Comparative example 1
With patent 201320600503.3 embodiment 1 as a comparison, in conjunction with Fig. 3, concrete scheme no longer describes in detail.
Comparative example 2
With patent 201520531917.4 embodiment 2 as a comparison, in conjunction with Fig. 4, concrete scheme no longer describes in detail.
The application being contrasted with comparative example 1, comparative example 2, its result collects as shown in table 1.
Effect comparison table under the different embodiment of table 1
Using scheme provided herein, comparative example 1 is to realize fiber by the role of tear of hobboing cutter in disintegrating machine
Broken；Comparative example 2 is by stationary knife, the grinding role of tear of moving knife, and in the application, waste and old terylene goods are with broken section of shape
State is carried out pretreatment, this broken section with comparative example 1, comparative example 2 in rupture irregular, breaking length is uncontrollable, fine
The process state of the forms such as dimension winding is different, uses the form of the application, both can farthest increase cleaning materials and cleaning agent
Contact surface between (water, purificant etc.), meanwhile, is also beneficial to follow-up drying and extruding heats up and plastifies, clean pretreatment
Oil content on the most broken section is relatively low, and moisture content is effectively controlled, and is formed follow-up quality of finished the most guaranteed.
Therefore, process route provided herein, not only energy consumption is low, and yield is high, and water consumption is only the 1/ of prior art
10, and in comparative example 1, polyester degraded is big, b value is high, comparative example 2 using industrial yarn as reclaim original made by
Product colour is higher, and Pillar recovery is only capable of degradation and uses；And the finished product of the reclaimed preparation of the application can reduce polyester palliating degradation degree,
Intrinsic viscosity reduces limited, and colour is low, it is ensured that product quality, it is achieved regeneration.
Claims (8)
1. containing washing waste textile cleaning pretreating process, it is characterised in that: carry out clearly with broken section of form containing washing waste textile
After washing, the removal of impurity and oil preparation are removed in dehydration, control oil content≤0.1% after cleaning, after sending into after drying in road compacting operation, and extruding
Heat up and viscosify after plastifying.
2. as claimed in claim 1 containing washing waste textile cleaning pretreating process, it is characterised in that: described is waste and old containing washing
Textile carries out washing successively, primary dewatering, rinsing, second dehydration, remove the removal of impurity and oil preparation, control after cleaning oil content≤
0.1%。
3. as claimed in claim 1 containing washing waste textile cleaning pretreating process, it is characterised in that: described is waste and old containing washing
Textile is the most once washed, primary dewatering, rinsing, secondary washing, second dehydration, remove the removal of impurity and oil preparation, after cleaning
Control oil content≤0.1%.
4. as claimed in claim 1 containing washing waste textile cleaning pretreating process, it is characterised in that: described broken segment length
For 1-10cm.
5. as claimed in claim 1 containing washing waste textile cleaning pretreating process, it is characterised in that: described drying uses
Infrared drying, while hot blast feeding, by water content control below 0.5%.
6. as claimed in claim 1 containing washing waste textile cleaning pretreating process, it is characterised in that: described cutting compacting
Refer to broken section of high speed rotating on the cutterhead of compacting machine, it is achieved compacting process.
7. as claimed in claim 5 containing washing waste textile cleaning pretreating process, it is characterised in that: described cutterhead rotating speed control
System is in the range of 100-600rmp, and in compacting process, compaction is controlled by cutterhead rotating speed, the material in current feedback compacting machine
Highly, control between 250-300A.
8. as claimed in claim 1 containing washing waste textile recovery system, it is characterised in that: in described compacting operation, thing
Material temperature degree >=100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193617.9A CN105837853A (en) | 2016-03-31 | 2016-03-31 | Cleaning and pretreatment process for waste textiles containing polyester fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193617.9A CN105837853A (en) | 2016-03-31 | 2016-03-31 | Cleaning and pretreatment process for waste textiles containing polyester fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105837853A true CN105837853A (en) | 2016-08-10 |
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ID=56584540
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610193617.9A Pending CN105837853A (en) | 2016-03-31 | 2016-03-31 | Cleaning and pretreatment process for waste textiles containing polyester fibers |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445303A (en) * | 2008-12-03 | 2009-06-03 | 王静丽 | Method for recycling sewage for cleaning waste plastic and device thereof |
| CN102357942A (en) * | 2011-08-23 | 2012-02-22 | 何国强 | Production method for recycled bottle sheet |
| CN103264040A (en) * | 2013-05-16 | 2013-08-28 | 上海博格工业用布有限公司 | Process for manufacturing sheet material by utilizing waste filter bag |
-
2016
- 2016-03-31 CN CN201610193617.9A patent/CN105837853A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445303A (en) * | 2008-12-03 | 2009-06-03 | 王静丽 | Method for recycling sewage for cleaning waste plastic and device thereof |
| CN102357942A (en) * | 2011-08-23 | 2012-02-22 | 何国强 | Production method for recycled bottle sheet |
| CN103264040A (en) * | 2013-05-16 | 2013-08-28 | 上海博格工业用布有限公司 | Process for manufacturing sheet material by utilizing waste filter bag |
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Address after: 312000 Zhejiang city of Shaoxing province Shaoxing robe Jiang Wang Road No. 6 Applicant after: Zhejiang Oasis Environmental Limited by Share Ltd Address before: 312000 Zhejiang city of Shaoxing province Shaoxing robe Jiang Wang Road No. 6 Applicant before: ZHEJIANG LYUYU ENVIRONMENTAL PROTECTION CO., LTD. |
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Application publication date: 20160810 |