CN102942688B - Single-shaft/shaft-free high-viscosity polyester continuous production device - Google Patents
Single-shaft/shaft-free high-viscosity polyester continuous production device Download PDFInfo
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Abstract
The invention provides a single-shaft/shaft-free high-viscosity polyester continuous production device. The single-shaft/shaft-free high-viscosity polyester continuous production device comprises a horizontal tackifying reactor. A drive shaft located at a front end of the horizontal tackifying reactor passes through the center of a front end cover and is fixed to a connector located at a front end in the horizontal tackifying reactor. A rear drive shaft is fixed to a connector located at a rear end in the horizontal tackifying reactor, passes through the center of a rear end cover and is connected to a bearing seat. Multiple film-drawing internal assemblies are arranged in the horizontal tackifying reactor. Each one of the multiple film-drawing internal assemblies comprises a moving scraper base and multiple moving scrapers. The moving scraper bases are rings and the multiple moving scrapers are in a shape of T. A rear end of each one of the multiple moving scrapers is fixed to the moving scraper base and a front end of each one of the multiple moving scrapers is close to an inner cylinder wall. The moving scraper bases are connected into an integral body by multiple connection rods parallel to a reactor center line. Two ends of each one of the multiple connection rods are fixed to the front end and the rear end in the horizontal tackifying reactor. Static scrapers are in a shape of a hook; rear ends of the static scrapers are installed on static scraper bases located at two sides of a lower end of a cylinder wall in a flange way; and groove-type quadrate blocks at front ends of the static scrapers are embedded between the moving scrapers in a shape of T and the connection rods. The single-shaft/shaft-free high-viscosity polyester continuous production device has the advantages of high production efficiency, low energy consumption, flexible and simple operation, and high flexibility degree.
Description
Technical field
The invention belongs to high molecular polymer production equipment technical field, be specifically related to a kind of single shaftless high-viscosity polyester continuous production device.
Background technology
Polyester viscosity is the most basic structural parameter of high molecular polymer, and its performance and purposes on macromolecular material has direct impact.High-viscosity polyester (PET) is the raw material of producing drink bottle, high-tenacity industrial yarns, cord thread and engineering plastics.At present, along with the continuous expansion of High Viscosity PET polyester Application Areas and the development of post-treatment technology, the market demand of high-viscosity polyester increases severely.
During high-viscosity polyester is produced, solid phase polycondensation is because the advantages such as its mild condition, good product quality become the polyester tackify industrial process of widespread use both at home and abroad at present.But, the production technique time long (> 30 hours) of solid phase polycondensation, consumption rare gas element is large, expend time in also all higher with energy, simultaneously, there is difference because the natural characteristics of solid phase polycondensation process can make slice surface and middle limiting viscosity, and increase along with the increase of viscosity.Although also there is at present many research, as CN101921388A etc. carries out improvement to a certain degree and makes product performance better solid phase polycondensation process, long flow path, energy consumption are high, the high bottleneck existing in this technological development that remains of running cost.
Melt phase polycondensation, also claims liquid-phase tackifying, is that the one that development in recent years is got up is prepared high-viscosity polyester novel process.It refers at the polycondensation vessel rear of general polycondensation production equipment increases a reactor, realizes melt tackify by improving the modes such as melt devolatilization area and Surface Renewal rate.In view of advantages such as efficient, the energy-conservation and constant product quality of liquid-phase tackifying technology, existing broad research at home and abroad at present, but only have several major companies to succeed in developing and realized industrial applications.
In recent years, domestic also have a lot of companies to carry out certain research to liquid-phase tackifying reactor.For example in CN3112545, propose to adopt the self-cleaning stirring system that satellite gear and spirochete composition are housed, make polyester fondant by opening for feed under the overhead stream of sun gear and satellite gear cylinder, in rotary course, melt moment is ground into film like and is flowed down, complete material devolatilization and realize high-viscosity polyester produce.In addition, CN10176888A, CN101914820A, CN200964390Y, also points out in the patents such as CN101125928, under certain condition, polyester can rely on gravity to realize tackify by vertical falling-film device.But, for high-viscosity polyester melt, rely on gravity nature film forming to carry out liquid-phase tackifying, its output will inevitably be subject to certain limitation, and meanwhile, there is very big difference in high-viscosity melt lower end film forming situation and discharging efficiency also can be with charging time.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, process energy consumption is little, the shaftless high-viscosity polyester continuous production device of list that tackify efficiency is high, to overcome the deficiencies in the prior art.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of single shaftless high-viscosity polyester continuous production device, this device comprises that one is provided with the horizontal tackify reactor of inner barrel and jacket cylinder; Be divided into material inlet, the material outlet at the forward and backward two ends of reactor inner barrel, and the melt Conveying system being connected with material import and export; Be divided into heating agent import, the heating agent outlet of the upper/lower terminal of reacting kettle jacketing cylindrical shell both sides, and import and export with heating agent the heat medium system being connected; Be located at the valve tube interface on kettle top, and the vacuum system being connected with valve tube interface; Reactor front end has a drive shaft to be fixedly connected with the linker that is positioned at reactor interior forward end through the center of reactor front end end cover, the linker that is positioned at the inner rear end of reactor is fixedly connected with back segment drive shaft, and back segment drive shaft is connected with the bearing support being arranged on reactor rear end cap through the center of reactor rear end cap; In reactor, be provided with many groups by moving scraper plate, moving scrape panel seat, membrane bar, quiet scraper plate and quietly scrape the membrane internals that panel seat forms; Every group of membrane internals comprise one and movingly scrape panel seat, are distributed in and movingly scrape multiple moving scraper plate on panel seat, connect adjacent two moving two quiet panel seats of scraping scraping multiple membrane bars, two quiet scraper plates of prelaminar part and be fixed on both sides, barrel lower end with form of flanges; Each moving panel seat of scraping is an annulus centered by axle center, each moving multiple moving scraper plates (preferably 3-4) that distribute on panel seat of scraping; Each moving scraper plate is T font, and its rear end is fixed on moving scraping on panel seat, and its front end is pressed close to inner tube wall; The rectangular crotch shape of each quiet scraper plate, its rear end is fixed on quiet scraping on panel seat, and two quarter bend folding parts of its front end divide the grooved square of formation to be just in time embedded between the T font and union lever of moving scraper plate; Respectively moving scrape the panel seat many union levers parallel with reactor medullary ray (preferably 3-4 root) and connect into an entirety, the two ends of union lever are fixed on the linker at forward and backward two ends in still.
Device of the present invention is made up of the shaftless automatically cleaning tackify of horizontal list reactive system, vacuum volatilization system, heat medium system and melt Conveying system, tackify reactor is wherein the shaftless automatically cleaning reactor of horizontal list, inside reactor has the membrane internals of particular design, rely on the driven by motor internals rotation of main transmission end, thereby make polyester fondant film forming.Membrane internals in tackify reactor are by the moving scraper plate of some amount, moving scrape panel seat, quiet scraper plate, quietly scrape panel seat, membrane bar forms according to certain pattern, and quiet scraper plate is fixed on quiet scraping on panel seat, the quiet panel seat of scraping is fixed on both sides, barrel below with form of flanges, dismounting separately, whole internals can be by opening forward and backward end cap, integral disassembly, assembly.The distinctive structure of these membrane internals can be in production of polyester very high film forming area and sufficient small molecules devolatilization area is provided, and is conducive to effectively deviating from of polyester fondant small molecular in production process; Simultaneously, because its inside reactor does not arrange axle (inside reactor is actually a tubular shaft), thereby greatly reduce popular response device producing the generation that in high-viscosity polyester, polyester occurs and be wound around axle phenomenon, also effectively increased gas-phase space, made small molecules be easy to flow to the riser that is positioned at kettle top (being valve tube); Membrane internals are arranging quiet scraper plate near union lever outside and moving scraper plate inner side, moving scraper plate and inner wall of kettle keep less gap, this is conducive in time the melt on kettle, linker and moving scraper plate be scraped in high-viscosity polyester production process, not only increase membrane area, also make tackify reactor there is good self-cleaning function, avoiding to a greater extent melt in flow process, to occur dead angle.
Membrane internals in the present invention in tackify reactor have at least more than one group, and many groups of moving scraper plates in these many group membrane internals are by certain corner mode eccentric pattern, can make like this membrane internals possess melt prograding in the process of rotating with tubular shaft, thereby further guarantee not occur in high-viscosity melt flow process back-mixing, improve product homogeneity, meanwhile, the prograding of membrane internals can also ensure the smooth discharging of polyester; In addition, can freely control the residence time of high-viscosity polyester in viscosity-increasing reactor by the angle of adjusting membrane internals.
Beneficial effect of the present invention:
Production equipment provided by the invention is simple in structure, flexible operation, energy-saving and cost-reducing, running cost is cheap, can realize efficiently One-step production high-viscosity polyester.This device is applicable to the processing of high sticky material in polyester production process, is particularly suitable for producing the more process of high-viscosity material by high-viscosity material.
The advantage of maximum of the present invention is that its flexibility of operation is large, and operation energy consumption is low, can greatly reduce human and material resources consumption and energy consumption in high-viscosity polyester production.The production equipment of continuous production high-viscosity polyester provided by the invention not only can be used for PET(polyethylene terephthalate), and can be used for PBS(poly butylene succinate), PBT(polybutylene terephthalate), PTT(Poly(Trimethylene Terephthalate)) etc. the production of dissimilar high-viscosity polyester.
The present invention adopts after said structure, has flow process short, and energy consumption is low, and production efficiency is high, and operation of equipment is flexible, quality product homogeneous, flexibility degree advantages of higher; Therefore, employing of the present invention will change the defects such as the interior high-viscosity polyester production capacity of current industry is low, quality product heterogeneity, running cost height, to significantly improve industrial competition, realize industrial chain optimization, also will produce great promotion and pushing effect to the development of chemical fibre production industry.
Brief description of the drawings
Fig. 1 is the shaftless high-viscosity polyester continuous production device of list of the present invention schematic diagram;
Fig. 2 is tackify reactor internals schematic diagram of the present invention (being the left side view of Fig. 1);
Fig. 3 is the moving scraper plate distribution schematic diagrams of tackify reactor internals of the present invention;
Wherein: 1, heating agent import 2, material inlet 3, linker 4, front end end cover 5, drive shaft 6, moving scraper plate 7, quiet scraper plate 8, quiet panel seat 9, moving panel seat 10, union lever 11, valve tube interface 12, inner barrel 13, jacket cylinder 14, heating agent outlet 15, rear end cap 16, material outlet 17, base 18, membrane bar 19, the bearing support scraped scraped
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1
A kind of single shaftless high-viscosity polyester continuous production device, this device is made up of the shaftless automatically cleaning tackify of horizontal list reactive system, vacuum volatilization system, heat medium system and melt Conveying system, as shown in Figure 1 and Figure 2, this device comprises that one is arranged on base 17, is provided with the horizontal tackify reactor of inner barrel 12 and jacket cylinder 13; Be divided into material inlet 2, the material outlet 16 at the forward and backward two ends of reactor inner barrel, and be positioned at inner barrel, the melt Conveying system being connected with material import and export; Be divided into heating agent import 1, the heating agent outlet 14 of the upper/lower terminal of reacting kettle jacketing cylindrical shell both sides, and be positioned at jacket cylinder, import and export with heating agent the heat medium system being connected; Be located at the valve tube interface 11 on kettle top, and the vacuum system being connected with valve tube interface; Reactor front end has a drive shaft 5 to be fixedly connected with the linker 3 that is positioned at reactor interior forward end through the center of reactor front end end cover 4, the linker that is positioned at the inner rear end of reactor is fixedly connected with back segment drive shaft, and back segment drive shaft is connected with the bearing support 19 being arranged on reactor rear end cap through reactor rear end cap 15 center; In reactor, be provided with many groups by moving scraper plate 6, moving scrape panel seat 9, membrane bar 18, quiet scraper plate 7 and quietly scrape the membrane internals that panel seat 8 forms; Every group of membrane internals comprise one movingly scrape panel seat 9, be distributed in movingly scrape four moving scraper plates 6 on panel seat, connect adjacent two moving four membrane bars scraping prelaminar part 18, two quiet scraper plates 7 and be fixed on two quiet panel seats 8 of scraping of both sides, barrel lower end with form of flanges; Each moving panel seat of scraping is an annulus centered by axle center, each moving four moving scraper plates that distribute on panel seat of scraping; Each moving scraper plate 6 is T font, and its rear end is fixed on moving scraping on panel seat 9, and its front end is pressed close to inner tube wall; The rectangular crotch shape of quiet scraper plate 7, its rear end is fixed on quiet scraping on panel seat 8, and two quarter bend folding parts of its front end divide the grooved square of formation to be just in time embedded between the T font and union lever 10 of moving scraper plate 6; Respectively moving scrape panel seat 9 use four union levers 10 parallel with reactor medullary ray and connect into an entirety, the two ends of union lever are fixed on the linker 3 that is positioned at the inner two ends of reactor; Many groups of moving scraper plates in many group membrane internals are by certain corner mode eccentric pattern, and as shown in Figure 3, it is along the spiral arrangement in cylindrical surface of pressing close to inner tube wall by certain corner mode that the front ends of the moving scraper plate 6 of many groups are pressed close to inner tube wall part.
The present invention carrys out work like this: in polyester device, the molten state material of common viscosity is slowly delivered to the material inlet 2 of tackify reactor at regular time and quantity via control valve, by driving membrane internals to rotate by drive shaft 5, material constantly advances along with being the rotation of the membrane internals that certain corner mode installs, simultaneously, there is devolatilization reaction constantly in small molecules, after reaction, taken away by valve tube interface 11, in this process, heating agent is by continuously entering the heating agent entrance 1 on tackify reactor and being tackify reactor circulating-heating via heating agent pipeline, afterwards from heating agent pipe outlet 14 out, ensure the demand of heat in whole high-viscosity polyester production process, meanwhile, vacuum system is constantly operation also, ensure the vacuum tightness in reaction process, thereby small molecules is more easily deviate from, after certain residence time, material, via material outlet 16 dischargings of tackify reactor, is delivered to the equipment such as spinning manifold or dicing machine via melt Conveying system and carries out respectively different downstream production processes.
Implementation result:
The polyester fondant that is 0.68dl/g by material characteristic viscosity, sends into the shaftless high-viscosity polyester continuous production device of above-mentioned list, and 285 DEG C of temperature, vacuum tightness is 100Pa, and rotating speed is to react 30min under the condition of 5 turn/min, obtains the melt that limiting viscosity is 0.95dl/g.
Embodiment 2
A kind of single shaftless high-viscosity polyester continuous production device of the present embodiment, its primary structure is substantially the same manner as Example 1, different is each moving uniform three the moving scraper plates on panel seat of scraping of this device, connecting adjacent two moving membrane bars of scraping prelaminar part is three, respectively movingly scrapes panel seat and uses three union levers parallel with reactor medullary ray to connect into an entirety.
Implementation result:
The polyester fondant that is 0.75dl/g by material characteristic viscosity, sends into the shaftless high-viscosity polyester continuous production device of above-mentioned list, and 288 DEG C of temperature, vacuum tightness is 50Pa, and rotating speed is to react 25min under the condition of 5 turn/min, obtains the melt that limiting viscosity is 1.05dl/g.
Claims (7)
1. the shaftless high-viscosity polyester continuous production device of list, this device comprises that one is provided with the horizontal tackify reactor of inner barrel and jacket cylinder; Be divided into material inlet, the outlet at the forward and backward two ends of inner barrel, and the melt Conveying system being connected with material import and export; Be divided into heating agent import, the outlet of the upper/lower terminal of jacket cylinder both sides, and import and export with heating agent the heat medium system being connected; Be located at the valve tube interface on kettle top, and the vacuum system being connected with valve tube interface; It is characterized in that, still front end has a drive shaft to be fixedly connected with the linker of still Inner Front End through the center of reactor front end end cover, the linker that is positioned at still rear end is fixedly connected with back segment drive shaft, and back segment drive shaft is connected with the bearing support being arranged on rear end cap through the center of reactor rear end cap; In reactor, be provided with many group membrane internals, every group of membrane internals comprise one and movingly scrape panel seat, are distributed in and movingly scrape multiple moving scraper plate on panel seat, connect adjacent two moving two quiet panel seats of scraping scraping multiple membrane bars, two quiet scraper plates of prelaminar part and be fixed on both sides, barrel lower end with form of flanges; Each moving panel seat of scraping is an annulus centered by axle center; Each moving scraper plate is T font, and its rear end is fixed on moving scraping on panel seat, and its front end is pressed close to inner tube wall; The rectangular crotch shape of each quiet scraper plate, its rear end is fixed on quiet scraping on panel seat, and two quarter bend folding parts of its front end divide the grooved square of formation to be just in time embedded between the T font and union lever of moving scraper plate; Respectively moving scrape panel seat and use the many union levers parallel with reactor medullary ray to connect into an entirety, the two ends of union lever are fixed on the linker at forward and backward two ends in still.
2. the shaftless high-viscosity polyester continuous production device of list according to claim 1, is characterized in that, each moving scrape uniform three or four moving scraper plates on panel seat.
3. the shaftless high-viscosity polyester continuous production device of list according to claim 1 and 2, is characterized in that, each moving panel seat of scraping uses parallel with reactor medullary ray three or four union levers to connect into an entirety.
4. the shaftless high-viscosity polyester continuous production device of list according to claim 1 and 2, is characterized in that, many groups that organize in membrane internals are moved scraper plates by certain corner mode eccentric pattern more.
5. the shaftless high-viscosity polyester continuous production device of list according to claim 3, is characterized in that, many groups that organize in membrane internals are moved scraper plates by certain corner mode eccentric pattern more.
6. the shaftless high-viscosity polyester continuous production device of list according to claim 4, is characterized in that, it is along the spiral arrangement in cylindrical surface of pressing close to inner tube wall by certain corner mode that the front ends of the moving scraper plate of many groups are pressed close to inner tube wall part.
7. the shaftless high-viscosity polyester continuous production device of list according to claim 5, is characterized in that, it is along the spiral arrangement in cylindrical surface of pressing close to inner tube wall by certain corner mode that the front ends of the moving scraper plate of many groups are pressed close to inner tube wall part.
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| CN201210319913.0A CN102942688B (en) | 2012-08-31 | 2012-08-31 | Single-shaft/shaft-free high-viscosity polyester continuous production device |
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| CN102942688B true CN102942688B (en) | 2014-07-30 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570922A (en) * | 2013-09-22 | 2014-02-12 | 上海聚友化工有限公司 | Continuous production process of high-viscosity PTT (polytrimethylene terephthalate) polyester |
| CN106268591B (en) * | 2016-09-23 | 2018-07-20 | 上海聚友化工有限公司 | A kind of polymerization reaction kettle and method for making polyester |
| CN107051355A (en) * | 2017-03-30 | 2017-08-18 | 山东里德工程技术有限公司 | A kind of single shaft self-cleaning reactor |
| CN109054005B (en) * | 2018-09-03 | 2021-01-05 | 黄山明杰新材料有限公司 | Production method of polyester resin |
| CN109432810A (en) * | 2018-12-05 | 2019-03-08 | 杭州索孚机械有限公司 | Horizontal single self-cleaning film evaporator |
| CN111545152B (en) * | 2020-04-24 | 2022-03-29 | 浙江恒澜科技有限公司 | Disc reactor with scraper device |
| CN113234212A (en) * | 2021-03-31 | 2021-08-10 | 山东道恩高分子材料股份有限公司 | Method and device for continuously preparing high-quality PBAT |
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