CN111910270A - Direct spinning production method of cationic dyeable polyester staple fiber - Google Patents
Direct spinning production method of cationic dyeable polyester staple fiber Download PDFInfo
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- CN111910270A CN111910270A CN202010677946.7A CN202010677946A CN111910270A CN 111910270 A CN111910270 A CN 111910270A CN 202010677946 A CN202010677946 A CN 202010677946A CN 111910270 A CN111910270 A CN 111910270A
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- melt
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The invention relates to a direct spinning production method of cationic dyeable polyester staple fiber, which comprises the following steps: firstly, required raw materials are put into a polyester device, a cation-dyeable polyester melt melted by the polyester device is sent into a main melt pipeline from a discharge port of the polyester device, impurities are filtered out by a melt filter in sequence, the melt is cooled by a front melt cooler, the melt conveying pressure is controlled by a booster pump assembly to be stable, the melt temperature is further regulated and controlled by a rear melt cooler, and then the melt enters a polyester staple fiber spinning unit for spinning through a melt distribution system; the waste material generated in the spinning process is treated to form waste material melt, the waste material melt is injected into the main melt pipeline, and the waste material melt and the melt in the main melt pipeline are mixed and then participate in spinning together. The cationic dyeable polyester staple fiber is produced by a method of directly spinning after polymerization, so that the burden of solid waste treatment is reduced, waste is changed into valuable, waste online recycling is realized, and the production cost is reduced.
Description
Technical Field
The invention relates to a direct spinning production method of cationic dyeable polyester staple fibers, belonging to the technical field of chemical fiber production.
Background
The common terylene needs to be dyed by disperse dye at high temperature and high pressure, and the energy consumption is high, thereby causing adverse effect on fibers and fabrics. The cationic dyeable polyester fiber adopts the cationic dye which has complete chromatogram, bright color, low price and simple dyeing process, realizes the constant-pressure boiling dyeing, reduces the dyeing energy consumption and pollution and embodies huge technical progress. However, the cationic dyeable polyester has low thermal stability, poor melt flowability, high production difficulty and high cost due to the introduction of the three monomers, so that the market demand is not large all the time since the market is sold, and only a plurality of small batch polyester and chip spinning polyester staple fiber manufacturers produce the cationic dyeable polyester. With the progress of the low-carbon, energy-saving and environment-friendly development concept of the society, the cationic dyeable polyester staple fiber enters a rapid development stage in recent years, the market demand enters the level of 10 ten thousand tons/year, and the large-scale production becomes a trend. This provides opportunities for a direct spinning process route that is low cost and simplified in flow. In addition, due to the characteristic difference, waste generated in the production process of the cationic dyeable fiber cannot be mixed with popular common terylene waste, and a special online recycling device needs to be designed for recycling, so that the solid waste treatment burden is reduced, and waste is changed into valuable.
Disclosure of Invention
The invention aims to solve the technical problem of providing a direct spinning production method of cationic dyeable polyester staple fiber with low cost and simplified process aiming at the prior art.
The technical scheme adopted by the invention for solving the problems is as follows: a direct spinning production method of cationic dyeable polyester staple fibers comprises the following steps: firstly, required raw materials are put into a polyester device, a cation-dyeable polyester melt generated by a polymerization reaction of the polyester device is sent into a main melt pipeline from a discharge port of the polyester device, impurities are sequentially filtered out by a melt filter, a front melt cooler cools the melt, a booster pump assembly controls the melt conveying pressure to be stable, a rear melt cooler further regulates and controls the melt temperature, and then the melt enters a polyester staple fiber spinning unit through a melt distribution system for spinning; the waste material generated in the spinning process is treated to form waste material melt, the waste material melt is injected into the main melt pipeline, and the waste material melt and the melt in the main melt pipeline are mixed and then participate in spinning together.
Optionally, the waste material produced in the spinning process is sent into a screw extruder for melt extrusion, the waste material melt formed by melting enters a waste material discharging pipeline, and the waste material melt is quantitatively injected into the main melt pipeline by a waste material melt metering injection pump after impurities are filtered by a waste material melt filter.
Optionally, feeding waste materials generated in the spinning process into a feeding device, and then conveying the waste materials to a crystallization drying unit by air for pre-crystallization and moisture removal; and mixing the dried waste and the stabilizing agent quantitatively added by the auxiliary material metering and adding device, and then feeding the mixture into a screw extruder.
Optionally, the waste materials generated in the production process comprise waste blocks and waste wires, wherein the waste blocks are recycled after being crushed and screened by the waste crushing device to form crushed materials, the waste wires are recycled after being cleaned with the oil agent and being subjected to friction granulation by the waste friction device to form friction materials, and the crushed materials and the friction materials are fed into the waste material feeding device according to a certain proportion.
Optionally, the scrap melt injection point is located before the booster pump unit.
Optionally, a first static mixer is provided between the injection point and the booster pump unit.
Optionally, the temperature of the melt conveying process in the main melt pipeline is controlled to be 285 +/-3 ℃.
Optionally, a third static mixer is provided on each of the distribution tubes and the branch tubes of the melt distribution system.
Compared with the prior art, the invention has the advantages that:
1. the invention relates to a direct spinning production method of cation dyeable polyester staple fiber, which cancels the links of polyester melt granulation packaging, storage, transportation, recrystallization drying, melting extrusion and the like in the production process, and produces the cation dyeable polyester staple fiber by a direct spinning method after polymerization;
2. the invention adopts the design of a two-stage melt cooler, the melt conveying temperature is more finely controlled, and the harm of poor thermal stability of the cation dyeable polyester is greatly reduced while the melt fluidity is maintained;
3. according to the invention, the combination of the SMX type static mixer and the SK type static mixer is adopted, so that the uniformity and stability of the melt are ensured, the influence of poor fluidity of the cation dyeable polyester melt is eliminated, and the uniformity and stability of the quality of the spun protofilaments are ensured;
4. the on-line recycling system can recycle the cationic dyeable polyester waste generated in the production process, reduces the burden of solid waste treatment, changes waste into valuable, realizes on-line recycling of the waste, reduces the production cost, and realizes the low-carbon environmental protection concept.
Drawings
FIG. 1 is a schematic structural diagram of a direct spinning production system for cationic dyeable polyester staple fibers.
Wherein:
Main melt line 102
Melt filter 103
Booster pump assembly 105
Aftermelt cooler 106
Distribution pipe 107.1
Branch pipe 107.2
Polyester staple fiber spinning machine set 108
Spinning beam 108.1
First static mixer 109
Second static mixer 110
Third static mixer 111
Auxiliary material adds pipeline 203
Waste material feeding device 204
Auxiliary material metering and adding device 206
Scrap melt filter 208
Scrap melt metering injection pump 209
A scrap abrading device 211.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the direct spinning production system for cationic dyeable polyester staple fibers in the embodiment comprises a main production system 1 and a waste recovery system 2, wherein the main production system 1 comprises a polyester device 101, a discharge port of the polyester device 101 is connected with a main melt pipeline 102, the main melt pipeline 102 is sequentially provided with a melt filter 103, a front melt cooler 104, a booster pump unit 105 and a rear melt cooler 106 from front to back, and the tail end of the main melt pipeline 102 is connected with a polyester staple fiber spinning unit 108 through a melt distribution system 107;
the waste recovery system 2 comprises a screw extruder 201, a waste feeding pipeline 202 and an auxiliary material adding pipeline 203 are connected and arranged at a feeding port of the screw extruder 201, a waste feeding device 204 and a waste crystallization drying unit 205 are sequentially arranged on the waste feeding pipeline 202 from front to back, an auxiliary material metering and adding device 206 is arranged on the auxiliary material adding pipeline 203, a waste discharging pipeline 207 is connected and arranged at a discharging port of the screw extruder 201, a waste melt filter 208 and a waste melt metering and injecting pump 209 are sequentially arranged on the waste discharging pipeline 207 from front to back, and the tail end of the waste discharging pipeline 207 is connected with a main melt pipeline 102;
the injection point of the scrap discharge line 207 is located between the front melt cooler 104 and the booster pump unit 105;
a first static mixer 109 is arranged between the injection point and the booster pump unit 105;
the first static mixer 109 adopts an SMX type static mixer;
a second static mixer 110 is arranged between the post-melt cooler 106 and the melt distribution system 107;
the second static mixer 110 adopts an SK type static mixer;
the melt distribution system 107 comprises a plurality of distribution pipes 107.1, each distribution pipe 107.1 is connected with a plurality of branch pipes 107.2, the polyester staple fiber spinning unit 108 comprises a plurality of spinning boxes 108.1, and the branch pipes 107.2 correspond to the spinning boxes 108.1 one by one;
the distribution pipe 107.1 and the branch pipe 107.2 are both provided with a third static mixer 111;
the third static mixer 111 adopts an SK type static mixer;
the waste recovery system 2 also comprises a waste crushing device 210 and a waste friction device 211, waste blocks are crushed and screened by the waste crushing device 210 and then recycled, and waste silk is cleaned with an oil agent and then is subjected to friction granulation by the waste friction device 211 and then recycled;
the crushed material treated by the waste crushing device 210 and the friction material treated by the waste friction device 211 are put into the waste feeding device 204 according to a certain proportion;
the crushed material processed by the waste crushing device 210 and the friction material processed by the waste friction device 211 are manually or automatically thrown into the waste feeding device 204.
The production method comprises the following steps:
firstly, required raw materials are put into a polyester device, a cation-dyeable polyester melt generated by a polymerization reaction of the polyester device is sent into a main melt pipeline from a discharge port of the polyester device, impurities are sequentially filtered out by a melt filter, a front melt cooler cools the melt, a booster pump assembly controls the melt conveying pressure to be stable, a rear melt cooler further regulates and controls the melt temperature, and then the melt enters a polyester staple fiber spinning unit through a melt distribution system for spinning; waste materials generated in the spinning process are treated to form waste material melt, the waste material melt is injected into the main melt pipeline, and the waste material melt and the melt in the main melt pipeline are mixed and then participate in spinning together;
waste blocks and waste silk can be generated in the spinning process, wherein the waste blocks are crushed and screened by a waste crushing device to form crushed materials for recycling, and the waste silk is cleaned with an oil agent and then is subjected to friction granulation by a waste friction device to form friction materials for recycling;
putting the crushed materials and the friction materials into a waste material feeding device according to a certain proportion, and then sending the materials to a crystallization drying machine set by air for pre-crystallization and moisture removal; mixing the dried waste and a stabilizing agent quantitatively added by an auxiliary material metering and adding device, then feeding the mixture into a screw extruder for melt extrusion, feeding the molten waste into a waste discharging pipeline, filtering impurities by a waste melt filter, and quantitatively injecting the impurities into a main melt pipeline by a waste melt metering and injecting pump;
the waste melt is injected and selected in front of a booster pump unit, on one hand, the pressure at the point is low and easy to inject, and on the other hand, two paths of melts can be better mixed after being rolled by the booster pump;
a first static mixer is arranged between the injection point and the booster pump unit, so that the waste melt and the melt in the main melt pipeline can be uniformly mixed;
considering that the cation dyeable polyester has poor thermal stability and is easy to generate thermal cracking when the temperature is too high; the fluidity is not good, the resistance is large when the temperature is too low, the pressure drop is large, and the flowing state is not ideal, so the temperature of the melt in the main melt pipeline is preferably controlled to be 285 +/-3 ℃ in the conveying process;
the cation dyeable polyester melt has poor fluidity and more obvious tube wall retention effect, so that a third static mixer is arranged on each distribution tube and each branch tube of the melt distribution system, and the melt can uniformly and stably enter each part of a spinning unit as far as possible for spinning.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (8)
1. A direct spinning production method of cationic dyeable polyester staple fiber is characterized by comprising the following steps: firstly, required raw materials are put into a polyester device, a cation-dyeable polyester melt generated by a polymerization reaction of the polyester device is sent into a main melt pipeline from a discharge port of the polyester device, impurities are sequentially filtered out by a melt filter, a front melt cooler cools the melt, a booster pump assembly controls the melt conveying pressure to be stable, a rear melt cooler further regulates and controls the melt temperature, and then the melt enters a polyester staple fiber spinning unit through a melt distribution system for spinning; the waste material generated in the spinning process is treated to form waste material melt, the waste material melt is injected into the main melt pipeline, and the waste material melt and the melt in the main melt pipeline are mixed and then participate in spinning together.
2. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 1, characterized in that: the waste material produced in the spinning process is sent into a screw extruder for melt extrusion, the waste material melt formed by melting enters a waste material discharging pipeline, and the waste material melt is quantitatively injected into a main melt pipeline by a waste material melt metering injection pump after impurities are filtered by a waste material melt filter.
3. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 2, characterized in that: feeding waste materials generated in the spinning process into a feeding device, and then conveying the waste materials to a crystallization drying unit by air to perform pre-crystallization and moisture removal; and mixing the dried waste and the stabilizing agent quantitatively added by the auxiliary material metering and adding device, and then feeding the mixture into a screw extruder.
4. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 3, characterized in that: the waste materials generated in the production process comprise waste blocks and waste wires, wherein the waste blocks are crushed and screened by the waste crushing device to form crushed materials for recycling, the waste wires are cleaned with an oil agent and then are subjected to friction granulation by the waste friction device to form friction materials for recycling, and the crushed materials and the friction materials are put into the waste material feeding device according to a certain proportion.
5. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 1, characterized in that: the waste melt injection point is arranged in front of the booster pump unit.
6. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 5, characterized in that: a first static mixer is arranged between the injection point and the booster pump unit.
7. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 1, characterized in that: the temperature of the melt conveying process in the main melt pipeline is controlled to be 285 +/-3 ℃.
8. The direct spinning production method of cationic dyeable polyester staple fiber according to claim 1, characterized in that: a third static mixer is disposed on each of the distribution tubes and the branch tubes of the melt distribution system.
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| CN202010677946.7A CN111910270B (en) | 2020-07-15 | 2020-07-15 | Direct spinning production method of cationic dyeable polyester staple fiber |
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| CN202010677946.7A CN111910270B (en) | 2020-07-15 | 2020-07-15 | Direct spinning production method of cationic dyeable polyester staple fiber |
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| CN111910270B CN111910270B (en) | 2022-11-29 |
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|---|---|---|---|---|
| CN1382844A (en) * | 2002-06-05 | 2002-12-04 | 赵军 | Technology for spinning superfine islands-in-sea bicomponent fibre |
| KR20120070859A (en) * | 2010-12-22 | 2012-07-02 | 웅진케미칼 주식회사 | Recycled polyester fiber having uv blocking property and manufacturing method thereof |
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| CN102912463A (en) * | 2012-11-09 | 2013-02-06 | 江阴市华宏化纤有限公司 | Production system for black polyester staple fibers |
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| CN105839199A (en) * | 2016-04-22 | 2016-08-10 | 孔祥明 | Process for spinning chemical fibers from waste polyester cloth |
| WO2017092071A1 (en) * | 2015-11-30 | 2017-06-08 | 谭亦武 | Method and application for recycling and reusing waste pet |
| CN108251901A (en) * | 2017-12-29 | 2018-07-06 | 黎明职业大学 | A kind of method for adding waste and old non-woven cloth reworked material and preparing fiber |
| CN109667069A (en) * | 2017-10-14 | 2019-04-23 | 余姚市荣欣毛麻制品厂 | One kind adhesive-bonded fabric and its manufacturing method made of spunbonded non-woven fabric and application |
-
2020
- 2020-07-15 CN CN202010677946.7A patent/CN111910270B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382844A (en) * | 2002-06-05 | 2002-12-04 | 赵军 | Technology for spinning superfine islands-in-sea bicomponent fibre |
| KR20120070859A (en) * | 2010-12-22 | 2012-07-02 | 웅진케미칼 주식회사 | Recycled polyester fiber having uv blocking property and manufacturing method thereof |
| CN102634863A (en) * | 2012-03-22 | 2012-08-15 | 浙江恒逸聚合物有限公司 | Constant-pressure positive ion dyeable cooling polyester filament yarn and production method thereof |
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| CN102912463A (en) * | 2012-11-09 | 2013-02-06 | 江阴市华宏化纤有限公司 | Production system for black polyester staple fibers |
| WO2017092071A1 (en) * | 2015-11-30 | 2017-06-08 | 谭亦武 | Method and application for recycling and reusing waste pet |
| CN105839199A (en) * | 2016-04-22 | 2016-08-10 | 孔祥明 | Process for spinning chemical fibers from waste polyester cloth |
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| CN111910270B (en) | 2022-11-29 |
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