CN107090606A - A kind of method for producing multifunctional different polyester fiber - Google Patents
A kind of method for producing multifunctional different polyester fiber Download PDFInfo
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- CN107090606A CN107090606A CN201710203250.9A CN201710203250A CN107090606A CN 107090606 A CN107090606 A CN 107090606A CN 201710203250 A CN201710203250 A CN 201710203250A CN 107090606 A CN107090606 A CN 107090606A
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- Prior art keywords
- kettle
- polyester
- ethylene glycol
- polyester fiber
- pipeline
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Classifications
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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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention relates to a kind of method for producing multifunctional different polyester fiber, comprise the following steps：Esterification occurs in esterifying kettle first for raw material p-phthalic acid and ethylene glycol; obtain oligoterephthalic acid glycol ester; oligoterephthalic acid glycol ester is respectively by pipeline after line adds different modifying agent afterwards; the first precondensation kettle, the second precondensation kettle, the 3rd precondensation kettle are delivered to respectively by the way that pipeline is defeated; the prepolymer for obtaining certain viscosity is delivered to the first terminal polymerization kettle, the second terminal polymerization kettle, the 3rd terminal polymerization kettle by pipeline respectively again; respectively obtain with multi-functional, differential melt, it is follow-up to carry out pelletizing or direct fabrics.The present invention effectively reduces thermal loss using " first three tail " technological process of three kettle flow technologies, reduces the electric energy loss of electrical equipment, more saves, operating cost is lower；Equipment arrangement is compacter, efficiently make use of the space of operation.
Description
Technical field
The present invention relates to a kind of industry light industry textile industry field polyester production process, and in particular to one kind production multifunctional differentization is gathered
The method of ester fiber.
Background technology
China's chemical fibre total output reaches 48,310,000 tons within 2015, accounts for global proportion and is up to 70%, accounts for textile fabric processing capacity
Proportion is more than 80%.But China's chemical fibre industry is still big without strong, high investment, high consumption, the mode of production of maximum discharge at present
Radical change is not obtained, the polyester production capacity that more especially routinizes is big, and technological process is fixed, produce single varieties, product is same
Matterization is serious, and is difficult to be made a response rapidly according to turn of the market for a variety of high value-added products that market needs.
Therefore, the polyester production process flow of current fixation limits the means that enterprise adjusts product category, also just compels
Enterprise is set to move towards technological innovation, the road of differentiated products.The differentiation of current polyester fiber production is realized how online by spinning
Blending addition is realized, but blending and modifying need to first prepare modified master batch, then modified master batch is melted into addition, on the one hand causes process to increase
Plus, operating cost is high；On the other hand the problem of overcoming the dispersing uniformity because adding post-modification composition caused by melt viscosity height.
The content of the invention
The purpose of the present invention produces multifunctional different polyester fiber for problem present in above-mentioned there is provided a kind of
Method, by the process optimization of existing method for making polyester esterification-preshrunk-final minification, " one drags three " flexibility to the present invention to be a set of
Makeup is put：I.e. one esterification step connects three precondensations and three whole polycondensation steps respectively, realizes multi items in Large Copacity device
Flexible Production, reduction investment and operating cost, while reducing the problem of single set midget plant high energy consumption.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following proposal：One kind production multifunctional different
The method of polyester fiber, comprises the following steps：It is anti-that esterification occurs first in esterifying kettle for raw material p-phthalic acid and ethylene glycol
Should, obtain oligoterephthalic acid glycol ester, afterwards oligoterephthalic acid glycol ester respectively by the first pipeline,
Second pipe, the 3rd pipeline are delivered to the first precondensation kettle, the second preshrunk by pipeline respectively after line adds different modifying agent
Poly- kettle, the 3rd precondensation kettle, the prepolymer for obtaining certain viscosity are defeated respectively again by the first pipeline, second pipe, the 3rd pipeline
The first terminal polymerization kettle, the second terminal polymerization kettle, the 3rd terminal polymerization kettle are delivered to, is respectively obtained with multi-functional, differential melt, it is follow-up to carry out
Pelletizing or direct fabrics, so as to realize that the differential polyester that just can obtain three kinds or more by an esterification is produced
Product, realize the flexibility of production of polyester.
Preferably, being respectively arranged with 2~3 notes on the esterifying kettle discharging opening to the conveyance conduit of three precondensation kettles
Loophole, realizes the online addition of modifying agent or additive, and the one or more modified monomers of injectable addition on each line
Or additive.Realize to realize differential production of the polyester fiber in polymerization stage, because the carboxylate degree of polymerization is relatively low, viscosity
Also it is low, modifying agent is added before polycondensation, modifying agent can be made to be uniformly embedded into macromolecular chain segment, the stabilization of properties of product is realized；
Various additives are added at this, agglomeration can be also greatly decreased, realizes that additive is dispersed in polyester fiber product.
Preferably, the differential polyester product includes but is not limited to by adding three monomers online or four monomers are obtained
Cation dyeable polyester, omni-direction permutation, big glossy polyester, flame retardant polyester.
Preferably, the ethylene glycol is provided with purifying ethylene glycol device before being reclaimed, according to each bar polycondensation line kind
Reuse ethylene glycol feeding purifying ethylene glycol device of refining is used further to slurry or directly with slurry, device use by situation selection after purification
The full reuse of ethylene glycol (EG), i.e., do not discharge ethylene glycol outward, with the addition of various modifying agent and additive, partially modified dose with
Additive is carried over being dissolved in the ethylene glycol of extraction in polycondensation, if this ethylene glycol containing modifying agent and additive is directly returned
With with slurry, it will cause other kinds in same device the quality problems such as dyeing exception, intensity decreases occur, therefore in reuse second
A set of refining plant is provided with before glycol, can be selected reuse ethylene glycol sending into the device according to each bar polycondensation line kind situation
It is used further to after polishing purification with slurry or directly with slurry.
Further, the purifying ethylene glycol device is by EG evaporating kettles, EG rectifying columns, treating column condenser, rectifying vacuum
Surge tank, EG refine liquid rotary pump, rectifier column reflux tank, rectifier column reflux pump, waste collection groove composition, and wherein second polycondensation system is adopted
The ethylene glycol that going out to refine is inputted to treating column through pump, and treating column is worked using vacuum distillation mode, the second two of overhead extraction
An alcohol part is used for rectifier column reflux, and it is with slurry that a part delivers to slurry tank, and bottom of towe is circulated with the formation of EG evaporating kettles, residue and waste liquid
Handle and reclaim through lower section waste collection groove.The device can realize refined point of the ethylene glycol containing multiple additives and modifying agent
From with the characteristics of energy consumption is low, separation purity is high.
It is above-mentioned that " one drags three " flexibility polyester quantity-produced technological process, i.e., one esterification step is followed by a plurality of contracting
Poly- process, according to the characteristics of the kind of production and modified product performance requirement, various modifying agent are added online, so as to realize
The Flexible Production of device, expands the scope of application of equipment and technology.This technological process, can be with flexible modulation product
Species, while investment and the operating cost of device can also be reduced effectively.In differential polyester production, the addition of modifying agent,
The processing characteristics of polyester fondant or particle is effectively changed, to obtain the polyester product of difference in functionality." one drags three " flexibility
Device, realize the raw material in the production of different modified products prepare, esterification process it is integrated, various additives are accurately added
In oligomer after completion of the esterification reaction, the polyester product of the specific function of market needs can be more easily produced.
Advantages of the present invention is：For whole technological process, from feedstock to may finally obtain three kinds or three kinds with
On multifunctional different product, realize the serialization and flexibility of polyester device；It is easy to changing the line of production for product, reduction is frequently opened
Stop the material loss caused；Obvious energy conservation：Compared with existing " a first tail " or " first two tail " technological process, the present invention is adopted
Thermal loss is effectively reduced with " first three tail " technological process of three kettle flow technologies, the electric energy for reducing electrical equipment is damaged
Consumption, is more saved, operating cost is lower；Equipment arrangement is compacter, efficiently make use of the space of operation, improves civil engineering
Utilization ratio, save construction land, the design of scale can also reduce the construction investment of project.
Figure of description
Fig. 1 is a first three tail apparatus general flow chart；
Fig. 2 is purifying ethylene glycol general flow chart.
Embodiment
The present invention is a kind of method for producing multifunctional different polyester fiber, is comprised the following steps：Raw material essence is to benzene two
Esterification occurs in esterifying kettle first for formic acid and ethylene glycol, oligoterephthalic acid glycol ester is obtained, afterwards to benzene
Naphthalate oligomer is respectively by pipeline after line adds different modifying agent, and by pipeline, defeated to deliver to first respectively pre-
Polycondensation vessel, the second precondensation kettle, the 3rd precondensation kettle, the prepolymer for obtaining certain viscosity are delivered to first respectively again by pipeline
Terminal polymerization kettle, the second terminal polymerization kettle, the 3rd terminal polymerization kettle, are respectively obtained with multi-functional, differential melt, follow-up to carry out pelletizing or straight
Spinning is connect, so as to realize the differential polyester product that three kinds or more is just can obtain by an esterification, is realized
The flexibility of production of polyester.Wherein 2~3 notes are respectively arranged with esterifying kettle discharging opening to the conveyance conduit of three precondensation kettles
Loophole, realizes the online addition of modifying agent or additive, and the one or more modified monomers of injectable addition on each line
Or additive, realize to realize differential production of the polyester fiber in polymerization stage.Before the ethylene glycol is reclaimed
Provided with purifying ethylene glycol device, reuse ethylene glycol is sent into by purifying ethylene glycol device essence according to the selection of each bar polycondensation line kind situation
System is used further to slurry or directly with slurry after purification.Purifying ethylene glycol device by EG evaporating kettles, EG rectifying columns, treating column condenser,
Rectifying vacuum buffer tank, EG refine liquid rotary pump, rectifier column reflux tank, rectifier column reflux pump, waste collection groove composition, and wherein second contracts
The ethylene glycol that poly- system extraction need to be refined is inputted to treating column through pump, and treating column is worked using vacuum distillation mode, and tower top is adopted
The ethylene glycol part gone out is used for rectifier column reflux, and it is with slurry that a part delivers to slurry tank, and bottom of towe is circulated with the formation of EG evaporating kettles, residual
Slag and waste liquid are handled and reclaimed through lower section waste collection groove.
The present invention is further discussed below with reference to embodiment and its accompanying drawing, but the present invention should not be limited by the examples:
Embodiment 1：The PTA/EG slurries modulated by certain mol proportion sent by PTA slurry modulating units, inject ester
Change in kettle, 265 DEG C or so progress esterifications are heated in kettle.The gas-liquid mixture that esterification is produced dodges above esterifying kettle
Steam position and carry out gas-liquid separation, the water of abjection enters knockout tower progress rectifying by gas phase pipe with ethylene glycol steam and separated；PTA/
EG is stopped certain time in reaction kettle of the esterification, reaction generation oligomer.From esterifying kettle bottom, discharge passes through oligomer to oligomer
Pipeline is sent to each prepolymerization reaction kettle respectively.Esterification yield is 88%~92%.
It is provided with adding in the production needs for there are the differential polyesters such as light, CDP, full-dull greatly, oligomeric conduit to meet
Plus agent syringe, dynamic mixer and oligomer homogenizer.
Oligomer from esterifying kettle is conveyed by oligomer pump, catalyst solution, delustring needed for production differential polyester
Agent solution, three monomers and four monomers are conveyed by measuring pump, are injected into by additive injection device in oligomeric conduit, in homogenizing
Each Prepolycondensating reactor is respectively enterd after time as defined in being stopped in device, homogenizing.The task of this unit is to send esterification unit
Carry out oligomer, carry out first time polycondensation, the esterification yield of material is reached that 99%~99.5%, degree of polymerization reaches n=15~28, it is special
Property viscosity in 0.26dL/g or so, be sent to respectively each whole polycondensation vessel.
The task of terminal polymerization kettle is the prepolymer for sending precondensation kettle, carries out final polycondensation reaction, makes the esterification of material
Rate reaches that more than the 99.8%, degree of polymerization reaches that n=100 or so, inherent viscosity polymerize in 0.65~0.68dL/g or so finished product
Thing.
Prepolymer is entered by the poly- bottom portion of final minification, by the film formation device membrane in whole polycondensation vessel and is adhered to and is formed thin on the net
Material film, material film constantly flowed downward due to Action of Gravity Field, constantly produces new surface of material, provided for the volatilization of ethylene glycol
Sufficient surface, improves the diffusion rate of ethylene glycol in liquid phase, reaches the purpose of rapid abjection ethylene glycol so that in high viscosity
In the case of polycondensation reaction can be smoothed out.Polymer stops the regular hour in reactor, reaches after the regulation degree of polymerization,
Discharged pumped by melt in discharging opening, different types of differential kind is produced respectively.
Claims (5)
1. a kind of method for producing multifunctional different polyester fiber, it is characterised in that comprise the following steps：Raw material essence is to benzene two
Esterification occurs in esterifying kettle first for formic acid and ethylene glycol, oligoterephthalic acid glycol ester is obtained, afterwards to benzene
Naphthalate oligomer is respectively by pipeline after line adds different modifying agent, and by pipeline, defeated to deliver to first respectively pre-
Polycondensation vessel, the second precondensation kettle, the 3rd precondensation kettle, the prepolymer for obtaining certain viscosity are delivered to first respectively again by pipeline
Terminal polymerization kettle, the second terminal polymerization kettle, the 3rd terminal polymerization kettle, are respectively obtained with multi-functional, differential melt, follow-up to carry out pelletizing or straight
Spinning is connect, so as to realize the differential polyester product that three kinds or more is just can obtain by an esterification, is realized
The flexibility of production of polyester.
2. a kind of method for producing multifunctional different polyester fiber according to claim 1, it is characterised in that the difference
Not Hua polyester product include but is not limited to by adding cation dyeable polyester that three monomers or four monomers obtain online, it is complete
Delustring polyester, big glossy polyester, flame retardant polyester.
3. a kind of method for producing multifunctional different polyester fiber according to claim 1, it is characterised in that the ester
Change and be respectively arranged with 2~3 injection ports on kettle discharging opening to the conveyance conduit of three precondensation kettles, realize modifying agent or additive
Online addition, and the one or more modified monomers of injectable addition or additive on each line realize to realize
Differential production of the polyester fiber in polymerization stage.
4. a kind of method for producing multifunctional different polyester fiber according to claim 1, it is characterised in that the second
Glycol is provided with purifying ethylene glycol device before being reclaimed, and is sent into reuse ethylene glycol according to the selection of each bar polycondensation line kind situation
Purifying ethylene glycol device of refining is used further to slurry or directly with slurry after purification.
5. a kind of method for producing multifunctional different polyester fiber according to claim 4, it is characterised in that the second
Glycol refining plant refines liquid rotary pump, rectifying by EG evaporating kettles, EG rectifying columns, treating column condenser, rectifying vacuum buffer tank, EG
Tower return tank, rectifier column reflux pump, waste collection groove composition, the ethylene glycol that wherein extraction of second polycondensation system need to be refined are inputted through pump
To treating column, treating column is worked using vacuum distillation mode, and an ethylene glycol part for overhead extraction is used for rectifier column reflux, one
It is with slurry that slurry tank is delivered in part, and bottom of towe is circulated with the formation of EG evaporating kettles, and residue and waste liquid are handled and returned through lower section waste collection groove
Receive.
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| CN201710203250.9A CN107090606A (en) | 2017-03-30 | 2017-03-30 | A kind of method for producing multifunctional different polyester fiber |
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| CN201710203250.9A CN107090606A (en) | 2017-03-30 | 2017-03-30 | A kind of method for producing multifunctional different polyester fiber |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108299630A (en) * | 2018-01-23 | 2018-07-20 | 浙江省现代纺织工业研究院 | A kind of modified PTA, modified poly ester and its flame-proof anti-aging polyester fiber of preparation |
| CN108484890A (en) * | 2018-02-02 | 2018-09-04 | 桐昆集团股份有限公司 | A kind of production technology and production system producing multifunctional different PBT polyester |
| CN109096474A (en) * | 2018-11-13 | 2018-12-28 | 中建安装工程有限公司 | A kind of device and technique of aromatic polyester polyol synthesis |
| CN110194832A (en) * | 2019-06-10 | 2019-09-03 | 桐昆集团股份有限公司 | Green functional polyisocyanate Speciality Pet Fiber flexible process and device |
| CN111848349A (en) * | 2020-07-01 | 2020-10-30 | 桐昆集团股份有限公司 | Continuous refining plant of ethylene glycol |
| CN114369234A (en) * | 2021-12-10 | 2022-04-19 | 桐昆集团浙江恒通化纤有限公司 | Polyester on-line production transfer equipment and method for performing production transfer by using same |
| CN114380988A (en) * | 2022-01-21 | 2022-04-22 | 无锡奥克特包装材料有限公司 | Preparation method of anti-electromagnetic radiation APET film |
-
2017
- 2017-03-30 CN CN201710203250.9A patent/CN107090606A/en active Pending
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| 何春燕等: "低温短流程PET工艺技术", 《聚酯工业》 * |
| 宋凯卓: "EG精制间歇和连续流程对比选择", 《聚酯工业》 * |
| 汪寿建等: "《天然气综合利用技术》", 30 April 2003, 化学工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108299630A (en) * | 2018-01-23 | 2018-07-20 | 浙江省现代纺织工业研究院 | A kind of modified PTA, modified poly ester and its flame-proof anti-aging polyester fiber of preparation |
| CN108484890A (en) * | 2018-02-02 | 2018-09-04 | 桐昆集团股份有限公司 | A kind of production technology and production system producing multifunctional different PBT polyester |
| CN109096474A (en) * | 2018-11-13 | 2018-12-28 | 中建安装工程有限公司 | A kind of device and technique of aromatic polyester polyol synthesis |
| CN109096474B (en) * | 2018-11-13 | 2023-08-25 | 中建安装集团有限公司 | Device and process for synthesizing aromatic polyester polyol |
| CN110194832A (en) * | 2019-06-10 | 2019-09-03 | 桐昆集团股份有限公司 | Green functional polyisocyanate Speciality Pet Fiber flexible process and device |
| WO2020248620A1 (en) * | 2019-06-10 | 2020-12-17 | 桐昆集团股份有限公司 | Flexible production method and apparatus for environmentally-friendly functional multi-differentiated polyester fibers |
| CN110194832B (en) * | 2019-06-10 | 2023-11-28 | 桐昆集团股份有限公司 | Green functional multi-differential polyester fiber flexible production method and device |
| CN111848349A (en) * | 2020-07-01 | 2020-10-30 | 桐昆集团股份有限公司 | Continuous refining plant of ethylene glycol |
| CN114369234A (en) * | 2021-12-10 | 2022-04-19 | 桐昆集团浙江恒通化纤有限公司 | Polyester on-line production transfer equipment and method for performing production transfer by using same |
| CN114380988A (en) * | 2022-01-21 | 2022-04-22 | 无锡奥克特包装材料有限公司 | Preparation method of anti-electromagnetic radiation APET film |
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Application publication date: 20170825 |