CN207130195U - A kind of process units for producing super imitative cotton polyester fiber - Google Patents

Abstract

It the utility model is related to a kind of process units for producing super imitative cotton polyester fiber, it includes heat medium system, raw material mixing supply system, esterification piece-rate system, eventually pre-polymerization system, the poly- system being sequentially connected, esterification piece-rate system includes the first reaction kettle of the esterification and the second reaction kettle of the esterification and destilling tower being sequentially connected, raw material mixing supply system includes TPA feeding bins, the process units of the super imitative cotton polyester fiber of production also includes the DEG adding sets with the first reaction kettle of the esterification by the first pipeline communication, and the first reaction kettle of the esterification is connected by second pipe with TPA feeding bins；The process units also includes being used for the moisture absorption mother liquor device for preparing moisture absorption mother liquor.It realizes the continuous production of super imitative cotton polyester fiber, and the polyester fiber that its polyester fondant produced is process has surface and inner hydrophilic, fibre section heteromorphosis, the feature of fibrous inner structure microporous, has good moisture absorption performance.

Description

A kind of process units for producing super imitative cotton polyester fiber

Technical field

It the utility model is related to a kind of process units for producing super imitative cotton polyester fiber.

Background technology

Polyester fiber is the first big kind of synthetic fibers, and its yield accounts for more than the 80% of chemical fibre total output, is to produce at present Amount and the maximum textile fabric of consumption figure, super imitative cotton polyester fiber of the prior art, because its excellent cost performance, wrinkle resistance, Conformality, higher intensity and elastic recovery capability, garment material can be used as to use and ornamental desirable feedstock, had very big Application prospect and broad based growth prospect.However, super imitative cotton polyester fiber of the prior art, when for rag trade, due to Its hydrophobic property is poor, causes water suction, hygroscopicity poor, comfort is lacked when wearing.Therefore how to prepare one kind while there is height Absorbing sweat, perspire, the super imitative cotton polyester fiber of rapid-curing cutback fabric, be that researcher and enterpriser have been working hard the mesh pursued for many years Mark.In addition, be typically that copolyesters master batch is produced in a single polyester equipment in the prior art, afterwards with conventional polyester After mixing in proportion, dry spinning again, its can not by polyester fondant direct fabrics, exist can not continuous production, efficiency it is low The problem of lower and the performance for influenceing subsequent fiber product.

At present, production of polyester is to produce the necessary process of polyester fiber, and polyester solution production link, process is more, additive Species is more and complex process, how optimized production process, the waste reduced in production process is that we reduce production cost, is improved The main point of penetration of productivity effect；

In the standard of prior art, it is desirable to which the DEG content in polyester fondant is less than 1.2%, and DEG contains in polyester fondant at present General control is measured between 0.75 ~ 0.85%；But with social development, the raising to product requirement, it is desirable to which polyester fondant DEG contains Amount control is between 1.25 ~ 1.35%；DEG in production of polyester is mainly derived from EG etherificate；DEG is mainly formed in esterified point From in the first reaction kettle of the esterification of system, in order that DEG content improves in melt, mainly pass through the life in the first esterifying kettle of change Production. art improves the amount of its production, mainly improves reaction pressure, improves esterification temperature, changes the means such as slurry mol ratio, More EG are made to participate in etherificate to obtain with more DEG with the EG contents in increase system, although it improves DEG content, DEG stability can not be guaranteed, while the change of esterification technique causes the linear of polyester molecule in melt to change, and makes It is uneven to obtain the molecular weight distribution of molecular melt, influences product quality, while the power consumption of polyester device also will increase.

The content of the invention

Technical problem to be solved in the utility model is overcome the deficiencies in the prior art, there is provided one kind produces super imitative cotton and gathered The process units of ester fiber, successfully realize the continuous production of super imitative cotton polyester fiber.

In order to solve the above technical problems, the technical scheme that the utility model is taken is as follows：

A kind of process units for producing super imitative cotton polyester fiber, it includes heat medium system, and the raw material mixing being sequentially connected supplies System, esterification piece-rate system, eventually pre-polymerization system, poly- system are answered, esterification piece-rate system includes the first esterification being sequentially connected Kettle and the second reaction kettle of the esterification and the destilling tower in parallel with the first reaction kettle of the esterification and the second reaction kettle of the esterification, raw material mixing supply Answering system includes TPA feeding bins, produce the process units of super imitative cotton polyester fiber also including with the first reaction kettle of the esterification by the The DEG adding sets of one pipeline communication, the first reaction kettle of the esterification are connected by second pipe with TPA feeding bins；The super imitative cotton of production The process units of polyester fiber also includes being used for preparing the moisture absorption mother liquor device of moisture absorption mother liquor, moisture absorption mother liquor device with The connection of second reaction kettle of the esterification is so as to which the moisture absorption mother liquor prepared is passed into the second reaction kettle of the esterification, super imitative cotton polyester fiber The device for spinning that continuous production device also includes with poly- system is connected eventually.

Preferably, moisture absorption mother liquor device includes the preparation kettle with the second reaction kettle of the esterification by the 3rd pipeline communication Body, it is arranged on the agitator prepared in kettle, is opened in the material inlet and material outlet for preparing kettle upper and lower part respectively.

Preferably, first entrance, second entrance and the 3rd entrance, the first entrance that material inlet includes setting respectively are used for Ethylene glycol is passed through, second entrance is used to be passed through reaction monomers and polyethylene glycol containing hydrophilic radical, and the 3rd entrance is used to be passed through to add Add agent.

Preferably, moisture absorption mother liquor device also includes being arranged on the heating agent entrance prepared on kettle, and heating agent entrance passes through 4th pipeline connects with heat medium system.

Preferably, moisture absorption mother liquor device also includes the DCS controls for monitoring and controlling dilution mother liquor addition situation System processed, DCS control systems include be arranged on the 3rd pipeline be used for monitor the flowmeter of moisture absorption mother liquid flow rate, for controlling The control valve of moisture absorption mother liquid flow rate.

Preferably, DEG adding sets include DEG storage tanks, the syringe pump on the first pipeline and for controlling DEG to throw Enter the volume control device of amount.

Preferably, volume control device includes flow detector on the first pipeline, positioned at flow detector downstream Flow controller, the valve between flow controller and flow detector and the TPA blankings on second pipe Detector, flow detector are connected with TPA blankings detector and flow controller signal respectively, flow controller and valve signal Connection.

Preferably, device for spinning uses big Trilobal spinneret.

According to the utility model, moisture absorption mother liquor includes ethylene glycol, the reaction monomers containing hydrophilic radical, polyethylene glycol and addition Agent.Additive further includes pore former（Such as barium sulfate, calcium carbonate or other inorganic particles）And antioxidant.Containing hydrophilic radical Reaction monomers such as sodiosulfoisophthalic acid, M-phthalic acid potassium sulfonate, sodiosulfoisophthalic acid glycol ester, poly- second two Alcohol, ethanedioic acid, succinic acid, glutaric acid, adipic acid, diethylene glycol (DEG), triethylene glycol, polypropylene glycol, polyoxybutylene diols, o-hydroxy first Acid etc..

Due to the implementation of above technical scheme, the utility model has the following advantages that compared with prior art：

The process units of the super imitative cotton polyester fiber of production of the present utility model, by adding moisture absorption mother liquor kettle, to inhaling Wet additive is pre-processed under cryogenic with alcohol, acid, on the one hand reaches the purpose of dilution additive, and realization accurately adds Add, on the other hand avoid and directly add the additive without any processing into polymeric kettle under the high temperature conditions, reduce pair The generation of reaction, also improves the spinnability and product stability of polyester fondant, and gained polyester fondant can be carried out directly subsequently Spinning, so as to realize super imitative cotton polyester fiber continuous production.In addition, the process units of super imitative cotton polyester fiber of the present utility model So that the DEG content in polyester fondant improves, improved from original 0.75 ~ 0.85% to 1.25 ~ 1.35%, and in process of production DEG content keeps stable in polyester fondant；Do not change esterification production technology while DEG content in improving polyester fondant, gather The processing procedure of ester apparatus is stable, product quality is stable；The DEG content in solution can also arbitrarily be changed as needed, and without increasing Add energy consumption, save the energy.

Brief description of the drawings

Fig. 1 is the overall structure diagram for the process units that the utility model produces super imitative cotton polyester fiber；

Wherein：1st, supply system is mixed；10th, TPA feeding bins；2nd, it is esterified piece-rate system；21st, the first reaction kettle of the esterification；22、 Second reaction kettle of the esterification；23rd, destilling tower；3rd, pre-polymerization system；4th, whole poly- system；5th, heat medium system；6th, moisture absorption mother liquor device； 60th, kettle；61st, flowmeter；62nd, control valve；7th, DEG adding sets；70th, DEG storage tanks；71st, syringe pump；721st, flow detection Device；722nd, flow controller；723rd, valve；724th, TPA blankings detector；G1, the first pipeline；G2, second pipe；G3, the 3rd Pipeline；G4, the 4th pipeline.

Embodiment

The utility model is described in more detail with specific embodiment below in conjunction with the accompanying drawings.

As shown in figure 1, a kind of process units for producing super imitative cotton polyester fiber, it includes heat medium system 5, is sequentially connected Raw material mixing supply system 1, esterification piece-rate system 2, eventually pre-polymerization system 3, poly- system 4, esterification piece-rate system 2 include being sequentially connected The first reaction kettle of the esterification 21 and the second reaction kettle of the esterification 22 and with the first reaction kettle of the esterification 21 and the second reaction kettle of the esterification 22 Destilling tower 23 in parallel, raw material mixing supply system 1 include TPA feeding bins, produce the process units of super imitative cotton polyester fiber also Including the DEG adding sets 7 connected with the first reaction kettle of the esterification 21 by the first pipeline G1, the first reaction kettle of the esterification 21 passes through Two pipeline G2 connect with TPA feeding bins 10；The process units of the super imitative cotton polyester fiber of production also includes being used to prepare moisture absorption mother liquor Moisture absorption mother liquor device, moisture absorption mother liquor device is connected with the second reaction kettle of the esterification 22 so as to which the moisture absorption prepared is female Liquid is passed into the second reaction kettle of the esterification 22, and super imitative cotton polyester fiber continuous production device also includes what is be connected with poly- system 4 eventually Device for spinning（Device for spinning uses big Trilobal spinneret）.

In this example, moisture absorption mother liquor device 6 includes by what the 3rd pipeline G3 was connected matching somebody with somebody with the second reaction kettle of the esterification 22 Kettle 60 processed, it is arranged on the agitator prepared in kettle 60, is opened in the material inlet for preparing the upper and lower part of kettle 60 respectively And material outlet.Material inlet includes first entrance, second entrance and the 3rd entrance set respectively, and first entrance is used to be passed through Ethylene glycol, second entrance are used to be passed through reaction monomers and polyethylene glycol containing hydrophilic radical, and the 3rd entrance is used to be passed through additive. Moisture absorption mother liquor device 6 also include be arranged on prepare kettle 60 on heating agent entrance, heating agent entrance by the 4th pipeline G4 with Heat medium system 5 connects.Moisture absorption mother liquor device 6 also includes the DCS controls for monitoring and controlling dilution mother liquor addition situation System processed, DCS control systems include being arranged on being used to monitor the flowmeter 61 of moisture absorption mother liquid flow rate, being used on the 3rd pipeline G3 Control the control valve 62 of moisture absorption mother liquid flow rate.

Further, DEG adding sets include DEG storage tanks 70, the syringe pump 71 on the first pipeline G1 and are used for Control the volume control device of DEG input amounts.Volume control device include flow detector 721 on the first pipeline G3, Flow controller 722 positioned at the downstream of flow detector 721, the valve between flow controller 722 and flow detector 721 Door 723 and the TPA blankings detector 724 on second pipe G2, flow detector 721 respectively with TPA blanking detectors 724 are connected with the signal of flow controller 722, and flow controller 722 is connected with the signal of valve 723.DEG injects first by syringe pump When in reaction kettle of the esterification, the TPA in TPA feeding bins is also directed into the first reaction kettle of the esterification, according to TPA blanking detectors TPA discharge quantity is detected, the data detected are passed in flow detector, according to the change of flow detector, flow control Device control valve opens and closes, to control DEG input amount.

According to the utility model, moisture absorption mother liquor includes ethylene glycol, the reaction monomers containing hydrophilic radical, polyethylene glycol and addition Agent.Additive further includes pore former（Such as barium sulfate, calcium carbonate or other inorganic particles）And antioxidant.Containing hydrophilic radical Reaction monomers such as sodiosulfoisophthalic acid, M-phthalic acid potassium sulfonate, sodiosulfoisophthalic acid glycol ester, poly- second two Alcohol, ethanedioic acid, succinic acid, glutaric acid, adipic acid, diethylene glycol (DEG), triethylene glycol, polypropylene glycol, polyoxybutylene diols, o-hydroxy first Acid etc..

Moisture absorption mother liquor preparation technology and addition situation in this example is as follows：

Ethylene glycol is led in moisture absorption mother liquor kettle, in the range of 180~220 DEG C of keeping temperature, is added containing sulfonic acid group, hydroxyl Three monomers and number-average molecular weight of the hydrophilic radicals such as base are 200~6000 monomer of polyethylene glycol the 4th, and third and fourth monomer adds Enter amount is respectively moisture absorption mother liquor weight 10~30%, 20~50%, addition barium sulfate, calcium carbonate or other inorganic particles（To inhale The 1~10% of wet mother liquor weight）As pore former, hindered amine light stabilizer and Hinered phenols antioxidant are then added, with moisture absorption On the basis of mother liquor weight, the addition of hindered amine light stabilizer and Hinered phenols antioxidant is respectively 0.01~0.1%, fully Stir, and by 20um filter screen filtration, be configured to moisture absorption mother liquor；Second two is added into the second esterification device Alcohol, the second esterification device is cooled to 200~230 DEG C, under nitrogen protection, suction will be prepared by DCS control systems Wet mother liquor 20~50KG on an hourly basis（Polyester output is 1~3 ton per hour）Accurately it is added in the second esterification device, and And polymerization catalyst antimony glycol is added, stirred after addition, progressively heating, which is imported in pre-polymerization system, carries out follow-up Polymerisation.

In summary, the process units of the super imitative cotton polyester fiber of production of the present utility model, is matched somebody with somebody by adding moisture absorption mother liquor Kettle is put, moisture absorption additive and alcohol, acid are pre-processed under cryogenic, on the one hand reach the purpose of dilution additive, Accurate addition is realized, on the other hand avoids and directly adds the addition without any processing into polymeric kettle under the high temperature conditions Agent, reduce the generation of side reaction, also improve the spinnability and product stability of polyester solution, gained polyester fondant can be straight The follow-up spinning of row is tapped into, so as to realize super imitative cotton polyester fiber continuous production.The polyester solution produced through the type process units adds The polyester fiber that work forms has fiber surface and inner hydrophilic；Fibre section heteromorphosis；Fibrous inner structure microporous Feature, and there is good moisture absorption performance, by national inspection centers detection fibre strength reach 4.5Cn/dtex with On, water absorption rate more than 480%, more than evaporation rate 0.15g/h, all exceed well over the technical requirements of hygroscopic fibre professional standard. Fiber ratio resistance is below 108 Ω ﹡ cm, and antistatic property is excellent, ultraviolet ray transmissivity≤5%, anti-fluffing and anti-pilling performance >=4 grade. Wetting that fabric prepared by it has, moisture absorption, perspire, drying function.In addition, super imitative cotton polyester fiber of the present utility model Process units causes the DEG content in polyester fondant to improve, and is improved from original 0.75 ~ 0.85% to 1.25 ~ 1.35%, and in life DEG content keeps stable in polyester fondant during production；Esterification production is not changed while DEG content in improving polyester fondant Technique, the processing procedure of polyester device is stable, product quality is stable；The DEG content in solution can also arbitrarily be changed as needed, and Energy consumption is increased without, saves the energy.

The utility model is described in detail above, its object is to allow the personage for being familiar with this art can be much of that Solve content of the present utility model and be carried out, the scope of protection of the utility model can not be limited with this, it is all according to this practicality The equivalent change or modification that new Spirit Essence is made, it should all cover in the scope of protection of the utility model.

Claims (8)

1. a kind of process units for producing super imitative cotton polyester fiber, it includes heat medium system（5）, be sequentially connected raw material mixing supply Answer system (1), esterification piece-rate system (2), pre-polymerization system（3）, poly- system eventually（4）, the esterification piece-rate system (2) is including successively First reaction kettle of the esterification of connection（21）With the second reaction kettle of the esterification（22）And with first reaction kettle of the esterification（21）With Class reactor（22）Destilling tower in parallel（23）, it is characterised in that：The raw material mixes supply system（1）Fed including TPA Feed bin（10）, the process units for producing super imitative cotton polyester fiber also includes and first reaction kettle of the esterification（21）Pass through One pipeline（G1）The DEG adding sets of connection（7）, first reaction kettle of the esterification（21）Pass through second pipe（G2）With it is described TPA feeding bins（10）Connection；The process units of the super imitative cotton polyester fiber of production also includes being used for the suction for preparing moisture absorption mother liquor Wet mother liquor device, described moisture absorption mother liquor device and the second described reaction kettle of the esterification（22）Connection will be so as to will prepare Good moisture absorption mother liquor is passed into second reaction kettle of the esterification（22）In, described super imitative cotton polyester fiber continuous production device is also Including with the end poly- system（4）The device for spinning of connection.

2. the process units of the super imitative cotton polyester fiber of production according to claim 1, it is characterised in that：The moisture absorption mother liquor Device for formulating（6）Including with second reaction kettle of the esterification（22）Pass through the 3rd pipeline（G3）The preparation kettle of connection（60）, set Put in the preparation kettle（60）Interior agitator, the preparation kettle is opened in respectively（60）The material inlet of upper and lower part And material outlet.

3. the process units of the super imitative cotton polyester fiber of production according to claim 2, it is characterised in that：The material inlet Including the first entrance, second entrance and the 3rd entrance set respectively, the first entrance is used to be passed through ethylene glycol, and described second Entrance is used to be passed through reaction monomers and polyethylene glycol containing hydrophilic radical, and the 3rd entrance is used to be passed through additive.

4. the process units of the super imitative cotton polyester fiber of production according to claim 2, it is characterised in that：The moisture absorption mother liquor Device for formulating（6）Also include being arranged on the preparation kettle（60）On heating agent entrance, the heating agent entrance passes through the 4th pipeline （G4）With the heat medium system（5）Connection.

5. the process units of the super imitative cotton polyester fiber of production according to claim 2, it is characterised in that：The moisture absorption mother liquor Device for formulating（6）Also include the DCS control systems for monitoring and controlling the moisture absorption mother liquor addition situation, the DCS controls System processed includes being arranged on the 3rd pipeline（G3）On be used for monitor the flowmeter of moisture absorption mother liquid flow rate（61）, for controlling The control valve of moisture absorption mother liquid flow rate（62）.

6. the process units of the super imitative cotton polyester fiber of production according to claim 1, it is characterised in that：The DEG additions Device includes DEG storage tanks（70）, located at first pipeline（G1）On syringe pump（71）And for controlling DEG input amounts Volume control device.

7. the process units of the super imitative cotton polyester fiber of production according to claim 6, it is characterised in that：The flow control Device includes being located at first pipeline（G1）On flow detector（721）, positioned at the flow detector（721）Downstream Flow controller（722）, positioned at the flow controller（722）With flow detector（721）Between valve（723）And position In the second pipe（G2）On TPA blanking detectors（724）, the flow detector（721）Respectively with the TPA blankings Detector（724）And flow controller（722）Signal connects, the flow controller（722）With the valve（723）Signal connects Connect.

8. the process units of the super imitative cotton polyester fiber of production according to claim 1, it is characterised in that：The device for spinning Using big Trilobal spinneret.