CN203393074U - Production system for continuous production of antistatic polyester melts and continuous film-drawing - Google Patents
Production system for continuous production of antistatic polyester melts and continuous film-drawing Download PDFInfo
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- CN203393074U CN203393074U CN201320305682.8U CN201320305682U CN203393074U CN 203393074 U CN203393074 U CN 203393074U CN 201320305682 U CN201320305682 U CN 201320305682U CN 203393074 U CN203393074 U CN 203393074U
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Abstract
The utility model relates to a production system for continuous production of antistatic polyester melts and continuous film-drawing. The production system comprises at least seven sub-systems, including an esterification reaction sub-system, a condensation polymerization sub-system, a melt distribution sub-system, a film-drawing sub-system, an antistatic agent preparation sub-system, a master batch addition sub-system and a waste film recycling sub-system, all of which are connected in sequence, wherein the outlet of the antistatic agent preparation sub-system is connected to an antistatic agent inlet of the esterification reaction sub-system; the melt distribution sub-system is provided with a core layer melt outlet and a surface layer melt outlet; the film-drawing sub-system is provided with a core layer melt inlet and a surface layer melt inlet; the core layer melt outlet is directly connected to the core layer melt inlet; the surface layer melt outlet is connected to the surface layer melt inlet through the master batch addition sub-system; the esterification reaction sub-system comprises a first esterification reactor and a second esterification reactor; the antistatic agent preparation sub-system comprises a hydrophilic antistatic agent and a metal salt antistatic agent preparation tank, both of which are connected in sequence; and the metal salt antistatic agent preparation tank is connected to the second esterification reactor. The production system for continuous production of antistatic polyester melts and continuous film-drawing realizes continuous production of the antistatic polyester melts and drawn films, and achieves high and steady product quality.
Description
Technical field
The utility model relates to the production system of a kind of continuous production of antistatic polyester melt continuous membrane, is mainly used in the continuous production of copolymerization method antistatic polyester melt and membrane thereof.
Background technology
There are larger market development potentiality in the industry ， China such as that polyester film is widely used in is electric, insulation, packing, at present just with annual more than 10% speed sustainable growth.The differential polyester film product that anti-static polyester film is innovated especially, to belong to the first encouragement class in " industry restructuring guidance list (basis in 2011) " of a direction ， National Development and Reform Commission issue of PET industry development during " 12 ".At present, the preparation of antistatic polyester film adopts outer painting method, coating process, surface to connect the method that a method, chemical conversion treatment method etc. improve surface conductance mostly, and these method enduring qualities are poor, and static inhibitor easily runs off, and also affects the transparency of polyester film.Adopt the copolymerization rule that improves self-conductance can well overcome these shortcomings, and technological operation is also simple.But continuous industrial production seldom, be take batchwise polymerization or semicontinuous little polymerization technique flow process substantially as main both at home and abroad at present, and throughput is little, and technical process is long, and investment cost is large, and starting material and energy expenditure are large, and product cost is high, unstable product quality.This present situation of production technology of antistatic polyester is limited by very large its widespread use that should have.
Utility model content
In order to overcome the above-mentioned defect under prior art, the production system that the purpose of this utility model is to provide a kind of continuous production of antistatic polyester melt and carries out continuous membrane, produces continuously to realize the copolymerization method of antistatic polyester and antistatic polyester film.
The technical solution of the utility model is:
A kind of continuous production of antistatic polyester melt the continuously production system of membrane, it mainly comprises the esterification subsystem connecting successively, polycondensation subsystem, melt assignment subsystem and membrane subsystem, also comprise static inhibitor preparation subsystem, master batch adds subsystem and useless film reclaims subsystem, the outlet of static inhibitor configuration subsystem is connected to the static inhibitor entrance of esterification subsystem, melt assignment subsystem is provided with the outlet of sandwich layer melt and the outlet of surface layer melt, membrane subsystem is provided with sandwich layer melt inlet and surface layer melt inlet, the outlet of sandwich layer melt directly connects sandwich layer melt inlet, the outlet of surface layer melt is added subsystem by master batch and is connected surface layer melt inlet, the import that useless film reclaims subsystem is connected to limit film and the waste outlet of membrane subsystem, and the outlet that useless film reclaims subsystem is connected to the recycling reaction mass entrance of polycondensation subsystem.
Be preferably, described esterification subsystem comprises the first esterifier and the second esterifier connecting successively, described static inhibitor entrance is located at the second esterifier, described static inhibitor preparation subsystem comprises Preparation tank and the charging tank connecting successively, the mixing static inhibitor outlet of described Preparation tank connects the entrance of charging tank, and the outlet of charging tank connects the static inhibitor entrance of the second esterifier.
Be preferably, described Preparation tank comprises the first Preparation tank and the second Preparation tank connecting successively, the first Preparation tank is provided with ethylene glycol entrance, wetting ability static inhibitor entrance and one-level and mixes static inhibitor outlet, the second Preparation tank is provided with one-level and mixes static inhibitor entrance, metal-salt static inhibitor entrance and the outlet of secondary mixing static inhibitor, the one-level of the second Preparation tank is mixed static inhibitor entrance and is connected with the one-level mixing static inhibitor outlet of the first Preparation tank, and the secondary mixing static inhibitor outlet of the second Preparation tank is connected with the entrance of charging tank.
Be preferably, in described charging tank, be provided with the filtration unit that the antistatic agent solution to preparing filters.
Be preferably, between described charging tank and the second esterifier, be provided with the antistatic agent solution after filtering is injected to the charging pump of the second esterifier continuously.
Be preferably, above-mentioned any antistatic polyester melt continuous process system, described the first Preparation tank and/or the second Preparation tank are vertical structure Preparation tank, described vertical structure Preparation tank is provided with whipping appts and/or heating steam jacket.
Be preferably, above-mentioned any antistatic polyester melt continuous process system, also comprises the subsystem that feeds intake, and the PTA measuring subsystem, ethylene glycol measuring subsystem and the catalyzer measuring subsystem that are connected with the described subsystem that feeds intake respectively.The described subsystem that feeds intake comprises slurry preparation groove, and the slurry outlet of described slurry preparation groove is connected with the esterification material entrance of the first esterifier.
Be preferably, above-mentioned any antistatic polyester melt continuous process system, described the first esterifier and/or the second esterifier adopt vertical chuck stirring tank, described vertical chuck stirring tank inside is provided with a round shape isolating cylinder, in vertical chuck stirring tank is divided into, Wai Liang chamber, the esterification material entrance of the first and second esterifiers is all located at mistress, the barrel of interior chamber is provided with for material and by mistress, is entered the narrow slit of interior chamber, the direct Yu Qinei of the static inhibitor entrance chamber of the second esterifier is communicated with, Nei Shi bottom is provided with material outlet after esterification.
Be preferably, described polycondensation subsystem at least comprises connected successively Prepolycondensating reactor and finishing reactor, the prepolymerization reaction material inlet of Prepolycondensating reactor is connected with material outlet after the esterification of the second esterifier, after the polycondensation of finishing reactor, material outlet forms the polyester fondant outlet of polycondensation subsystem, and described Prepolycondensating reactor and/or finishing reactor are provided with or are not provided with scraper condenser.
Be preferably, described Prepolycondensating reactor adopts vertical perfectly mixed reactor, described vertical perfectly mixed reactor is still two cell structures, divide upper and lower two Room, and be provided with and be communicated with Shang Shihexia chamber and to control material in upper chamber, enter the control valve of lower chamber, described prepolymerization reaction material inlet is located at Shang Shi，Xia chamber and is provided with material outlet after precondensation, upper chamber is provided with air flow stirring apparatus ，Xia chamber and is provided with mechanical stirring device.
Be preferably, described finishing reactor adopts horizontal disc formula reactor.
Be preferably, above-mentioned any continuous production of antistatic polyester melt the continuously production system of membrane, described melt assignment subsystem comprises the first melt booster pump, melt cooler and the first hydraulic regulating valve connecting successively, the material inlet of the first melt booster pump connects the polyester fondant outlet of polycondensation subsystem, and the material outlet of the first hydraulic regulating valve comprises described sandwich layer melt outlet and the outlet of surface layer melt.
Be preferably, described melt assignment subsystem also comprises the first static mixer, and described the first static mixer is located between the outlet of sandwich layer melt and the sandwich layer melt inlet of continuous membrane subsystem of the first hydraulic regulating valve.
Be preferably, described master batch adds subsystem and comprises successively connected master batch feed bin, the first screw rod melting machine, the second melt booster pump, the second hydraulic regulating valve, the 3rd melt booster pump, mixing valve and the second static mixer, described in the export mixes of the second static mixer, master batch adds the surface layer melt outlet of subsystem, the second hydraulic regulating valve is provided with an entrance and the first outlet, entrance is connected with the master batch melt outlet of the second melt booster pump, and the first outlet connects the import of the 3rd melt booster pump; Mixing valve is provided with the first entrance, the second entrance and an outlet, and the first entrance is connected with the master batch melt outlet of the 3rd melt booster pump, and the second entrance is connected with the surface layer melt outlet of the first hydraulic regulating valve, and outlet is connected with the entrance of the second static mixer.
Be preferably, described continuous production of antistatic polyester melt the continuously production system of membrane, also comprise section subsystem, and described section subsystem arranges in the following manner:
The polyester fondant entrance of described melt assignment subsystem is connected with the polyester fondant outlet of polycondensation subsystem by distribution valve, described distribution valve is provided with an entrance and the first outlet, second exports, entrance is connected with the polyester fondant outlet of polycondensation subsystem, the polyester fondant entrance of described melt assignment subsystem is connected with the first outlet of distribution valve, and the first section material inlet of described section subsystem is connected with the second outlet of distribution valve;
The second hydraulic regulating valve that described master batch adds subsystem is also provided with the second outlet, and this second outlet is connected with the second section material inlet of described section subsystem;
The material outlet of described the first hydraulic regulating valve also comprises the 3rd outlet, and the 3rd outlet is connected with the 3rd section material inlet of described section subsystem,
Wherein, the material outlet of described section subsystem connects or does not connect the master batch entrance that described master batch adds subsystem.
The beneficial effects of the utility model are:
The utility model is by introducing continuously the second esterifier by the static inhibitor ethylene glycol solution of configuration continuously, and in conjunction with the continuous production technology of conventional polyester, make to produce continuously copoly type antistatic polyester melt, in conjunction with melt assignment subsystem and master batch, add subsystem again, making surface layer melt and sandwich layer melt reach membrane requirement can directly enter film drawing device and carry out membrane, synthetic and membrane continuously with this by antistatic polyester melt is incorporated on a production line, simplified technological process, production efficiency and benefit have been improved, reduced production cost, and stablized quality product.
Accompanying drawing explanation
Fig. 1 is the one-piece construction frame diagram of an embodiment of production system of continuous production of antistatic polyester melt of the present utility model continuous membrane;
Fig. 2 is continuous production of antistatic polyester melt of the present utility model the continuous one-piece construction schematic diagram of an embodiment of the production system of membrane.
Embodiment
Referring to Fig. 1 and Fig. 2, the utility model provides the production system of a kind of continuous production of antistatic polyester melt continuous membrane, comprises the subsystem that feeds intake, esterification subsystem and the polycondensation subsystem connecting successively and the static inhibitor being connected with esterification subsystem preparation subsystem.By adding continuously static inhibitor in the production system at conventional continuous production of polyesters melt, realize the continuous production of antistatic polyester melt.
Static inhibitor can be added in polyester fondant by copolymerization method.For example, can the esterification section on the continuous condensed Pet Production Line of direct esterification inject continuously static inhibitor, carry out copolyreaction with terephthalic acid and ethylene glycol, realize the continuous production of antistatic polyester melt.
Be preferably, static inhibitor adopts interrupter method and ethylene glycol to prepare, and the antistatic agent solution of generation is injected into esterification subsystem continuously.
For example, the preparation of static inhibitor can be divided into two steps: the first step, and wetting ability static inhibitor mixes with ethylene glycol, is heated to 90-110 ℃; Second step adds metal-salt static inhibitor in above-mentioned solution, and preparation temperature range is 90-110 ℃, and preparation time range is 1-3h.
Be preferably, described static inhibitor preparation subsystem comprises the first Preparation tank and the second Preparation tank connecting successively.
The first Preparation tank is provided with ethylene glycol entrance, wetting ability static inhibitor entrance and one-level and mixes static inhibitor outlet, the second Preparation tank is provided with one-level and mixes static inhibitor entrance, metal-salt static inhibitor entrance and the outlet of secondary mixing static inhibitor, and the one-level of the first Preparation tank is mixed static inhibitor outlet and is connected with the one-level mixing static inhibitor entrance of the second Preparation tank.
Be preferably, described the first Preparation tank and/or the second Preparation tank are vertical structure Preparation tank, and described vertical structure Preparation tank is provided with whipping appts and/or heating steam jacket.Conventionally, described static inhibitor Preparation tank all adopts vertical structure, and is provided with mechanical stirring system to meet the demand of mass transfer and heat transfer, steam jacket heating is also set, to meet corresponding temperature control requirement.
Conventionally, in order to guarantee to prepare adding continuously of qualified static inhibitor, be preferably, described static inhibitor preparation subsystem also comprises charging tank, charging tank is connected in the secondary mixing static inhibitor outlet of the second Preparation tank, and the static inhibitor preparing adds esterification subsystem continuously through charging tank.
In order to reduce the foreign matter content in solution, to guarantee stable the carrying out of reaction, be preferably, in described charging tank, be provided with the filtration unit that the antistatic agent solution to preparing filters, to first static inhibitor was filtered before adding esterification subsystem.
Be preferably, the exit of described charging tank can arrange charging pump, so that after filtration, antistatic agent solution is injected to esterification subsystem continuously.
Be preferably, in antistatic polyester melt is produced continuously, described esterification is divided at least two steps and carries out, in the first step esterification, add antistatic polyester melt to synthesize monomers terephthalic acid and ethylene glycol and polycondensation catalyzer used, described catalyzer can be antimony glycol or Antimony Triacetate, adds antistatic agent solution and other auxiliary agents in second step esterification.
Be preferably, described esterification subsystem comprises the first esterifier and the second esterifier connecting successively, at the second esterifier, static inhibitor entrance is set, and be connected with the feed pump outlet in static inhibitor preparation subsystem by pipeline, the static inhibitor preparing can directly be added in the second esterifier.
Be preferably, the described first and/or second esterifier adopts vertical chuck stirring tank, described vertical chuck stirring tank inside is provided with a round shape isolating cylinder, vertical chuck stirring tank is divided into inside and outside two Room, mistress is provided with reaction mass entrance, the barrel of interior chamber is provided with and by mistress, is entered the narrow slit of interior chamber for material, static inhibitor entrance be located at the top of the second esterifier and directly Yu Qinei chamber be communicated with ，Nei Shi bottom and be provided with material outlet after esterification.This of the static inhibitor kind mode that adds can reduce the residence time of static inhibitor in esterification reaction process, reduces influencing each other between the two.
Conventionally, in the first and/or second esterifier, be provided with inner coil pipe and chuck, to heat and insulation.Material wherein under agitation reacts conventionally, and stirring rake is that install on top, and bottom is provided with lower support bearing, and stir and can be used for enhancement of heat transfer, fast reaction speed, and reaction is evenly carried out.
For guaranteeing the reaction conditions of esterification, so that it carries out smoothly, esterification subsystem is also connected with process tower system, and this process tower system can adopt process tower system of the prior art, repeats no more herein.
Conventionally, described polycondensation at least comprises prepolymerization reaction and finishing reaction.
Be preferably, described polycondensation subsystem at least comprises connected successively Prepolycondensating reactor and finishing reactor.The polycondensation material inlet of Prepolycondensating reactor is connected with material outlet after the esterification of the second esterifier, after the polycondensation of finishing reactor, material outlet forms the polyester fondant outlet of polycondensation subsystem, and described Prepolycondensating reactor and/or finishing reactor are provided with or are not provided with scraper condenser.
Be preferably, described Prepolycondensating reactor adopts vertical perfectly mixed reactor, described vertical perfectly mixed reactor is still two cell structures, divide upper and lower two Room, and be provided with control valve ，Shang chamber that the material being communicated with in Shang Shihexia Shi Shishang chamber can enter lower chamber and be provided with material outlet is connected after the esterification with the second esterifier prepolymerization reaction material inlet ，Xia chamber and be provided with material outlet after precondensation, upper chamber is provided with air flow stirring apparatus ，Xia chamber and is provided with mechanical stirring device.
Be preferably, described finishing reactor adopts horizontal disc formula reactor.
Conventionally, for guaranteeing the reaction conditions of polycondensation, so that it carries out smoothly, polycondensation subsystem is also connected with vacuum and maintains subsystem, and this vacuum maintains subsystem and can adopt vacuum of the prior art to maintain system, repeats no more herein.
Be preferably, also comprise the PTA measuring subsystem, ethylene glycol measuring subsystem and the catalyzer measuring subsystem that are connected with the described subsystem that feeds intake.
Be preferably, described in the subsystem that feeds intake comprise slurry preparation groove, the slurry outlet of described slurry preparation groove is connected with the esterification material entrance of the first esterifier, and deployed material is added in esterification subsystem and participates in esterification.
The utility model can be realized the continuous production of antistatic polyester melt, and production steady and continuous, and product antistatic property is good, and stable lasting.
An embodiment of the present utility model, it mainly comprises the subsystem 1 that feeds intake connecting successively, esterification subsystem 2, polycondensation subsystem 3, melt assignment subsystem 4 and continuously membrane subsystem 5, also comprise that static inhibitor preparation subsystem 6 and master batch add subsystem 7, described static inhibitor preparation subsystem comprises the first Preparation tank 61 and the second Preparation tank 62 connecting successively, the mixing static inhibitor outlet of the second Preparation tank is connected with the static inhibitor entrance of esterification subsystem, the first polyester fondant outlet of described melt assignment subsystem is connected with the sandwich layer melt inlet of continuous membrane subsystem, the second polyester fondant outlet of described melt assignment subsystem is connected with the polyester fondant entrance that master batch adds subsystem, the surface layer melt outlet that described master batch adds subsystem is connected with the surface layer melt inlet of membrane subsystem.
The subsystem that feeds intake being positioned at before esterification subsystem arranges slurry preparation groove 11, raw material PTA is metered into slurry preparation groove by rotary valve or weighing device from PTA day feed bin 10, raw material EG is measured and from raw material tank field, is used pumping toward slurry preparation groove by under meter, and both are mixed and made into PTA/EG suspension by process ratio.Meanwhile, adopt the polycondensation catalyst ethylene glycol solution that intermittently dispensing mode prepares to be metered into slurry preparation groove from catalyzer charging tank.Can also add by needs of production the additive of other purposes in addition, these adjustment can, according to prior art and other correlation techniques, not hinder enforcement of the present invention.
In slurry preparation groove, agitator is set, the PTA/EG/ catalyst mixture adding fully mixes under mechanical agitation, makes the slurry of the required constant proportioning of polyreaction, by the spiral pump of slurry preparation trench bottom, quantitatively sends into esterification subsystem.
Esterification subsystem at least comprises the first esterifier 21 and the second esterifier 22 being connected successively, also can add as required other esterifier to realize the more esterification of multistep.Described the first esterifier and the second esterifier are equipped with respectively the independently temperature hierarchy of control and walk the temperature required requirement of pet reaction to reach each.
Send into the slurry of the first esterifier under the effect of agitator, under certain temperature, pressure, liquid level, fully react to material esterification yield and reach more than 90%, be then sent to the second esterifier reaction.The second esterifier adopts vertical chuck stirring tank, and a round shape isolating cylinder is housed in reactor, and reactor is divided into inside and outside two Room, and material enters interior chamber by the narrow slit on the barrel of mistress Jing Nei chamber, and then flow out You Neishi bottom.Material under agitation reacts, and by inner coil pipe and chuck, is heated and insulation.Stirring rake is that install on top, and bottom is provided with lower support bearing, and agitator is for enhancement of heat transfer.Described static inhibitor entrance is located at the top of the second esterifier, and antistatic agent solution is directly added to the interior chamber of the second esterifier.
Static inhibitor adopts interrupter method preparation, independent compounding system is set, adopt two Preparation tanks (the first Preparation tank and the second Preparation tank), two Preparation tanks all adopt vertical structure, be provided with mechanical stirring system to meet the demand of mass transfer and heat transfer, steam jacket heating is set, can meets corresponding temperature control requirement.In the first Preparation tank, prepare wetting ability static inhibitor ethylene glycol solution, then enter the second Preparation tank, metal-salt static inhibitor adds in the second Preparation tank.After metal-salt static inhibitor dissolves completely, solution enters charging tank, in charging tank, antistatic agent solution more after filtration, by charging pump, be injected into continuously in the second esterifier, the esterification material in the second esterifier sends into polycondensation subsystem after reaching predetermined esterification yield continuously.
Described polycondensation subsystem at least comprises connected successively Prepolycondensating reactor 31 and finishing reactor 32.The polycondensation material inlet of Prepolycondensating reactor is connected with material outlet after the esterification of the second esterifier, and after the polycondensation of finishing reactor, material outlet forms the polyester fondant outlet of polycondensation subsystem.
Prepolycondensating reactor adopts vertical perfectly mixed reactor, described vertical perfectly mixed reactor is still two cell structures, divide upper and lower chamber, and be provided with the control valve that is communicated with Shang Shihexia chamber, precondensation material You Shang chamber enters, and enters Xia Shi，Shang chamber utilize airflow stirring through described control valve, do not establish agitator ，Xia chamber and be provided with mechanical stirring.
The melt that reaches certain esterification yield is sent into after Prepolycondensating reactor by the second esterifier, under certain temperature and vacuum condition, polycondensation occurs, and conventionally, service temperature is controlled to 260-280 ℃, and definitely working pressure is controlled at 5-25mbar.
Prepolymer is delivered to finishing reactor from the jacketed valve outflow of Prepolycondensating reactor bottom through the first toothed gear pump supercharging and after prepolymer strainer filters, and finishing reactor adopts horizontal disc formula structure.Regulate the temperature of finishing reactor at 265-285 ℃, regulate vacuum system to make the absolute pressure≤3mbar of finishing reaction, material is fully reaction under the effect of agitator.
Described Prepolycondensating reactor and finishing reactor are all furnished with corresponding vacuum system, temperature controlling system.The equipment of vacuum system comprises ethylene glycol vapor jet pump and rotary pump with liquid ring, is all connected with scraper condenser and the corresponding liquid seal trough recycle system between described Prepolycondensating reactor and finishing reactor and vacuum apparatus.Make spent glycol vaporizer produce power steam for ethylene glycol vacuum jet pump, connect rotary pump with liquid ring exhaust simultaneously below.
Regulating vacuum tightness to make it meet reaction needed makes polyester fondant reach the viscosity of need of production.Reach the polyester fondant of desired viscosity by after the second toothed gear pump supercharging, after sending in fondant filter and filtering, enter jacket pipe and be delivered to distribution valve 8, by switching and the distribution of distribution valve, polyester fondant can be delivered to section subsystem or melt assignment subsystem.
From finishing reactor antistatic polyester melt out, by melt pressure transport pipe, enter melt assignment subsystem and master batch interpolation subsystem, be divided into not containing the sandwich layer melt of opening agent and the surface layer melt that contains opening agent, directly enter membrane subsystem.
Be preferably, the polyester fondant entrance of described melt assignment subsystem is connected with the polyester fondant outlet of polycondensation subsystem by melt pressure transport pipe, and after finishing reaction, quantity-produced antistatic polyester melt enters melt assignment subsystem by melt pressure transport pipe.When being provided with section subsystem, described melt pressure transport pipe is provided with the first bypass duct 81, and the section material inlet of described section subsystem is connected with the first bypass duct.A part for described antistatic polyester melt is before entering melt assignment subsystem by melt pressure transport pipe, and another part can be produced antistatic polyester by described the first bypass duct connection lateral slice production system and cut into slices.
Be preferably, described melt assignment subsystem comprises the first melt booster pump 41, melt cooler 42 and the first hydraulic regulating valve 43 connecting successively, the material inlet of the first melt booster pump connects the polyester fondant outlet of polycondensation subsystem, and the material outlet of the first hydraulic regulating valve comprises described the first polyester fondant outlet, the second polyester fondant outlet and the outlet of the 3rd polyester fondant.By the first hydraulic regulating valve, polyester fondant is distributed, polyester fondant can be delivered to membrane subsystem, master batch interpolation subsystem and section subsystem.Deliver to the melt of membrane subsystem directly as the required sandwich layer melt of membrane, go to the melt of master batch interpolation subsystem for preparing the required surface layer melt of membrane.From sandwich layer melt out of melt distribution systems with add subsystem surface layer melt out from master batch and directly enter membrane system and carry out membrane.
Be preferably, described melt assignment subsystem also comprises the first static mixer 44, and described the first static mixer is located between the first polyester fondant outlet and the sandwich layer melt inlet of continuous membrane subsystem of the first hydraulic regulating valve.
Be preferably, described melt cooler is provided with carries the heating agent chuck of heating agent and the tubulation of melt conveying, between heating agent and melt, by tubulation, isolate and heat exchange, described melt cooler is connected with finned heating agent water cooler, the high temperature heating agent entrance of described finned heating agent water cooler is connected with the outlet of the high temperature heating agent of heating agent chuck, and the low temperature heating agent outlet of described finned heating agent water cooler is connected with the low temperature heating agent entrance of heating agent chuck by heat medium circulation pump.Conventionally, melt is cooled to 270-280 ℃ after melt cooler.
Be preferably, above-mentioned any continuous production of antistatic polyester melt the continuously production system of membrane, wherein, described master batch adds subsystem and comprises successively connected master batch feed bin 71, weighing device, the first screw rod melting machine 72, the second melt booster pump 73, the second hydraulic regulating valve 76, the 3rd melt booster pump 77, mixing valve 74 and the second static mixer 75, described in the export mixes of the second static mixer, master batch adds the surface layer melt outlet of subsystem, and the second hydraulic regulating valve is provided with an entrance, the first outlet and the second outlet.Entrance is connected with the master batch melt outlet of the second melt booster pump, and the first outlet connects the import of the 3rd melt booster pump, and the second outlet connects pelletizing system (subsystem of cutting into slices).Mixing valve is provided with the first entrance, the second entrance and an outlet, and the first entrance is connected with the master batch melt outlet of the 3rd melt booster pump, and the second entrance is connected with the surface layer melt outlet of the first hydraulic regulating valve, and outlet is connected with the entrance of the second static mixer.
Wherein, the master batch section that contains high density opening agent enters described the first screw rod melting machine from described master batch feed bin by described weighing device, becomes master batch melt.Described master batch melt is by the second melt booster pump and melt pressure transport pipe, after distributing by described the second hydraulic regulating valve again, by the 3rd melt booster pump, be delivered to mixing valve, antistatic polyester melt-mixing with melt assignment subsystem is come becomes the required surface layer melt of membrane after the second static mixer.
Described master batch adds subsystem and also comprises the second hydraulic regulating valve 76 of being located between the first screw rod melting machine and the second melt booster pump, the second hydraulic regulating valve 76 is provided with the second bypass duct 761, when being provided with section subsystem, the second bypass duct connects section subsystem.
Be preferably, above-mentioned any continuous production of antistatic polyester melt the continuously production system of membrane, can also comprise that useless film reclaims subsystem 9, the import that useless film reclaims subsystem is connected to limit film and the waste outlet of membrane subsystem, and the outlet that useless film reclaims subsystem is connected to the recycling reaction mass entrance of polycondensation subsystem.In practice, the prepolymerization reaction material inlet of recycling reaction mass entrance and Prepolycondensating reactor can be both two mouths independently separately, can be also same entrance.Described useless film reclaims subsystem and comprises useless coating materials storehouse 91 and the second screw rod melting machine 92 connecting successively, the opening for feed in described useless coating materials storehouse connects the useless film outlet of membrane subsystem, and the discharge port of described the second screw rod melting machine connects the polycondensation material inlet of finishing reactor.The limit film that membrane subsystem produces and waste material reenter polycondensation subsystem after reclaiming subsystem melting by useless film.
Utilize pulverizer to give up and by blower fan, be delivered to described useless coating materials storehouse after film and rim charge are pulverized, in described useless coating materials storehouse, useless film fragment is sent into screw rod melting machine by blower fan and is smelted into useless film melt, and described useless film melt is delivered to polycondensation system by topping-up pump.Described useless film melt is first mixed rear by prepolymer strainer with prepolymer, then enters finishing reactor.
The limit film that membrane system produces and waste material are by useless film recovery system melting, because useless film melt has thermal destruction to a certain degree to cause reduced viscosity in screw rod melting machine, the useless direct membrane of film melt can make the Quality Down of film, for addressing this problem, the film melt that will give up is reintroduced back to polycondensation system and reacts tackify, thereby formation internal recycling, has guaranteed the quality of film, also make whole production equipment not have waste material to produce simultaneously.
Thermal source used in the utility model system provides by heating agent station, heating agent (approximately 320 ℃) after hot Media Oven heating is delivered to esterification subsystem, polycondensation subsystem, melt assignment subsystem, master batch interpolation subsystem and membrane subsystem by heat medium circulation pump, the heating agent that after using, temperature reduces by pipeline send back to heating agent station again heating cycle use, complete primary fluid closed cycle.The melt cooler of melt assignment subsystem, is also undertaken coolingly by heating agent, polyester fondant is cooled to 270-280 ℃.The heating agent raising from melt cooler temperature is out cooling by finned heating agent water cooler again, and circulates by heat medium pump.
The utility model is by introducing continuously the second esterifier by the static inhibitor ethylene glycol solution of configuration continuously, and in conjunction with the continuous production technology of conventional polyester, make to produce continuously copoly type antistatic polyester melt, in conjunction with melt assignment subsystem and master batch, add subsystem again, making surface layer melt and sandwich layer melt reach membrane requirement can directly enter film drawing device and carry out membrane, synthetic and membrane continuously with this by antistatic polyester melt is incorporated on a production line, simplified technological process, production efficiency and benefit have been improved, reduced production cost, and stablized quality product.
Claims (10)
1. a continuous production of antistatic polyester melt the continuously production system of membrane, it is characterized in that comprising the esterification subsystem connecting successively, polycondensation subsystem, melt assignment subsystem and membrane subsystem, also comprise static inhibitor preparation subsystem, master batch adds subsystem and useless film reclaims subsystem, the outlet of static inhibitor configuration subsystem is connected to the static inhibitor entrance of esterification subsystem, melt assignment subsystem is provided with the outlet of sandwich layer melt and the outlet of surface layer melt, membrane subsystem is provided with sandwich layer melt inlet and surface layer melt inlet, the outlet of sandwich layer melt directly connects sandwich layer melt inlet, the outlet of surface layer melt is added subsystem by master batch and is connected surface layer melt inlet, the import that useless film reclaims subsystem is connected to limit film and the waste outlet of membrane subsystem, and the outlet that useless film reclaims subsystem is connected to the recycling reaction mass entrance of polycondensation subsystem.
2. continuous production of antistatic polyester melt as claimed in claim 1 the continuously production system of membrane, it is characterized in that described esterification subsystem comprises the first esterifier and the second esterifier connecting successively, described static inhibitor entrance is located at the second esterifier, described static inhibitor preparation subsystem comprises Preparation tank and the charging tank connecting successively, the mixing static inhibitor outlet of described Preparation tank connects the entrance of charging tank, and the outlet of charging tank connects the static inhibitor entrance of the second esterifier.
3. continuous production of antistatic polyester melt as claimed in claim 2 the continuously production system of membrane, it is characterized in that described Preparation tank comprises the first Preparation tank and the second Preparation tank connecting successively, the first Preparation tank is provided with ethylene glycol entrance, wetting ability static inhibitor entrance and one-level are mixed static inhibitor outlet, the second Preparation tank is provided with one-level and mixes static inhibitor entrance, metal-salt static inhibitor entrance and the outlet of secondary mixing static inhibitor, the one-level of the second Preparation tank is mixed static inhibitor entrance and is connected with the one-level mixing static inhibitor outlet of the first Preparation tank, the secondary mixing static inhibitor outlet of the second Preparation tank is connected with the entrance of charging tank.
4. continuous production of antistatic polyester melt as claimed in claim 3 the continuously production system of membrane, it is characterized in that being provided with the filtration unit that the antistatic agent solution to preparing filters in described charging tank, between described charging tank and the second esterifier, be provided with the antistatic agent solution after filtering is injected to the charging pump of the second esterifier continuously.
5. continuous production of antistatic polyester melt as claimed in claim 4 the continuously production system of membrane, it is characterized in that described the first Preparation tank and/or the second Preparation tank are vertical structure Preparation tank, described vertical structure Preparation tank is provided with whipping appts and/or heating steam jacket.
6. continuous production of antistatic polyester melt as claimed in claim 5 the continuously production system of membrane, characterized by further comprising the subsystem that feeds intake, and the PTA measuring subsystem being connected with the described subsystem that feeds intake respectively, ethylene glycol measuring subsystem and catalyzer measuring subsystem, the described subsystem that feeds intake comprises slurry preparation groove, the slurry outlet of described slurry preparation groove is connected with the esterification material entrance of the first esterifier, described the first esterifier and/or the second esterifier adopt vertical chuck stirring tank, described vertical chuck stirring tank inside is provided with a round shape isolating cylinder, in vertical chuck stirring tank is divided into, Wai Liang chamber, the esterification material entrance of the first and second esterifiers is all located at mistress, the barrel of interior chamber is provided with for material and by mistress, is entered the narrow slit of interior chamber, the static inhibitor entrance of the second esterifier is directly communicated with the interior chamber of the second esterifier, Nei Shi bottom is provided with material outlet after esterification.
7. continuous production of antistatic polyester melt as claimed in claim 6 the continuously production system of membrane, it is characterized in that described polycondensation subsystem at least comprises connected successively Prepolycondensating reactor and finishing reactor, the prepolymerization reaction material inlet of Prepolycondensating reactor is connected with material outlet after the esterification of the second esterifier, after the polycondensation of finishing reactor, material outlet forms the polyester fondant outlet of polycondensation subsystem, described Prepolycondensating reactor and/or finishing reactor are provided with or are not provided with scraper condenser, described Prepolycondensating reactor adopts vertical perfectly mixed reactor, described vertical perfectly mixed reactor is still two cell structures, on minute, Xia Liang chamber, and be provided with and be communicated with Shang Shihexia chamber and to control material in upper chamber, enter the control valve of lower chamber, described prepolymerization reaction material inlet is located at chamber, lower chamber is provided with material outlet after precondensation, upper chamber is provided with air flow stirring apparatus, lower chamber is provided with mechanical stirring device, described finishing reactor adopts horizontal disc formula reactor.
8. the continuous production of antistatic polyester melt as described in arbitrary claim in claim 1 to 7 the continuously production system of membrane, it is characterized in that described melt assignment subsystem comprises the first melt booster pump connecting successively, melt cooler and the first hydraulic regulating valve, the material inlet of the first melt booster pump connects the polyester fondant outlet of polycondensation subsystem, the material outlet of the first hydraulic regulating valve comprises described sandwich layer melt outlet and the outlet of surface layer melt, described melt assignment subsystem also comprises or does not comprise the first static mixer, when comprising the first static mixer, described the first static mixer is located between the outlet of sandwich layer melt and the sandwich layer melt inlet of continuous membrane subsystem of the first hydraulic regulating valve.
9. continuous production of antistatic polyester melt as claimed in claim 8 the continuously production system of membrane, it is characterized in that described master batch adds subsystem and comprises successively connected master batch feed bin, the first screw rod melting machine, the second melt booster pump, the second hydraulic regulating valve, the 3rd melt booster pump, mixing valve and the second static mixer, described in the export mixes of the second static mixer, master batch adds the surface layer melt outlet of subsystem, the second hydraulic regulating valve is provided with an entrance and the first outlet, entrance is connected with the master batch melt outlet of the second melt booster pump, the first outlet connects the import of the 3rd melt booster pump, mixing valve is provided with the first entrance, the second entrance and an outlet, and the first entrance is connected with the master batch melt outlet of the 3rd melt booster pump, and the second entrance is connected with the surface layer melt outlet of the first hydraulic regulating valve, and outlet is connected with the entrance of the second static mixer.
10. continuous production of antistatic polyester melt as claimed in claim 9 the continuously production system of membrane, characterized by further comprising section subsystem, and described section subsystem arranges in the following manner:
The polyester fondant entrance of described melt assignment subsystem is connected with the polyester fondant outlet of polycondensation subsystem by distribution valve, described distribution valve is provided with an entrance and the first outlet, second exports, entrance is connected with the polyester fondant outlet of polycondensation subsystem, the polyester fondant entrance of described melt assignment subsystem is connected with the first outlet of distribution valve, and the first section material inlet of described section subsystem is connected with the second outlet of distribution valve;
The second hydraulic regulating valve that described master batch adds subsystem is also provided with the second outlet, and this second outlet is connected with the second section material inlet of described section subsystem;
The material outlet of described the first hydraulic regulating valve also comprises the 3rd outlet, and the 3rd outlet is connected with the 3rd section material inlet of described section subsystem,
Wherein, the material outlet of described section subsystem connects or does not connect the master batch entrance that described master batch adds subsystem.
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| CN201320305682.8U CN203393074U (en) | 2013-05-30 | 2013-05-30 | Production system for continuous production of antistatic polyester melts and continuous film-drawing |
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| CN201320305682.8U CN203393074U (en) | 2013-05-30 | 2013-05-30 | Production system for continuous production of antistatic polyester melts and continuous film-drawing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529753A (en) * | 2019-01-14 | 2019-03-29 | 扬州惠通化工科技股份有限公司 | A kind of PBT esterification system |
| CN109575358A (en) * | 2018-12-18 | 2019-04-05 | 中国石油天然气集团有限公司 | Waste polyester film recyclable device and method |
-
2013
- 2013-05-30 CN CN201320305682.8U patent/CN203393074U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575358A (en) * | 2018-12-18 | 2019-04-05 | 中国石油天然气集团有限公司 | Waste polyester film recyclable device and method |
| CN109575358B (en) * | 2018-12-18 | 2022-02-18 | 中国石油天然气集团有限公司 | Waste polyester film recovery device and method |
| CN109529753A (en) * | 2019-01-14 | 2019-03-29 | 扬州惠通化工科技股份有限公司 | A kind of PBT esterification system |
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Address after: 100037 Beijing city Haidian District Zengguang Road No. 21 Patentee after: CHINA KUNLUN CONTRACTING & ENGINEERING Corp. Patentee after: China Textile Industry Design Institute Address before: 100037 Beijing city Haidian District Zengguang Road No. 21 Patentee before: CHINA KUNLUN CONTRACTING & ENGINEERING Corp. Patentee before: China Textile Industry Design Institute |
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