CN102942688A - 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 the shaftless high-viscosity polyester continuous production device of a kind of list.
Background technology
Polyester viscosity is the most basic structural parameter of high molecular polymer, and it has direct impact to performance and the purposes of macromolecular material.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 was produced, solid phase polycondensation was because the advantages such as its mild condition, good product quality become the at present polyester tackify industrial process of widespread use both at home and abroad.Yet the production technique time of solid phase polycondensation long (＞30 hours), it is large to consume rare gas element, it is also all higher with energy to expend time in, simultaneously, because the natural characteristics of solid phase polycondensation process can make slice surface and middle limiting viscosity have difference, and increase along with the increase of viscosity.Although many researchs are also arranged at present, such as CN101921388A etc. solid phase polycondensation process is carried out improvement to a certain degree and makes product performance better, long flow path, high, the high bottleneck that exists in this technological development that remains of running cost of energy consumption.
Melt phase polycondensation also claims liquid-phase tackifying, is a kind of high-viscosity polyester novel process for preparing that development in recent years is got up.It refers to increase a reactor at the polycondensation vessel rear of general polycondensation production equipment, realizes the melt tackify by improving the modes such as melt devolatilization area and Surface Renewal rate.In view of the advantages such as efficient, energy-conservation and constant product quality of liquid-phase tackifying technology, have at present broad research at home and abroad, but only have several major companies to succeed in developing and realized industrial applications.
In recent years, domestic also have a lot of companies that the liquid-phase tackifying reactor has been carried out certain research.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, and finishes the material devolatilization and realizes high-viscosity polyester production.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 the vertical falling-film device.Yet, for the 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 simultaneously, there are very big difference in high-viscosity melt lower end film forming situation and discharging efficient in the time of also can be with charging.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, the process energy consumption is little, the shaftless high-viscosity polyester continuous production device of list that tackify efficient is high, to overcome the deficiencies in the prior art.
To achieve these goals, the present invention has adopted following technical scheme:
The shaftless high-viscosity polyester continuous production device of a kind of list, this device comprise 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 that is 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 the heat medium system that is connected with heating agent; Be located at the valve tube interface on kettle top, and the vacuum system that is connected with the valve tube interface; The center that the reactor front end has a drive shaft to pass the reactor front end end cover is fixedly connected with the linker that is positioned at the reactor interior forward end, the linker that is positioned at the inner rear end of reactor is fixedly connected with the back segment drive shaft, and the back segment drive shaft passes the center of reactor rear end cap and is connected with bearing support on being installed in the reactor rear end cap; Be provided with in the reactor many groups by moving scraper plate, move and 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 a plurality of moving scraper plate on the panel seat, connect adjacent two moving two quiet panel seats of scraping scraping a plurality of membrane bars, two quiet scraper plates of prelaminar part and be fixed on both sides, barrel lower end with form of flanges; Each is moving, and to scrape panel seat be a annulus centered by the axle center, each moving a plurality of moving scraper plate that distribute on the panel seat (preferably 3-4) of scraping; Each moving scraper plate is the T font, and its rear end is fixed on moving scraping on the 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 the panel seat, and two quarter bend folding parts of its front end divide the grooved square of formation just in time to be embedded between the T font and union lever of moving scraper plate; Each is moving scrapes the panel seat many piece union levers parallel with the reactor medullary ray (preferably 3-4 root) and connects into an integral body, and the two ends of union lever are fixed on the linker at forward and backward two ends in the still.
Device of the present invention is comprised of the shaftless automatically cleaning tackify of horizontal list reactive system, vacuum volatilization system, heat medium system and melt Conveying system, tackify reactor wherein is 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 the polyester fondant film forming.Membrane internals in the tackify reactor are by the moving scraper plate of some amount, movingly scrape panel seat, quiet scraper plate, quietly scrape panel seat, the membrane bar consists of according to certain pattern, and quiet scraper plate is fixed on quiet scraping on the panel seat, the quiet panel seat of scraping is fixed in both sides, barrel below with form of flanges, separately dismounting, whole internals can be by opening forward and backward end cap, integral disassembly, assembly.The distinctive structure of these membrane internals can be the film forming area that provides very high in the production of polyester and sufficient small molecules devolatilization area, is conducive to effectively deviating from of polyester fondant small molecular in the production process; Simultaneously, because its inside reactor does not arrange axle (inside reactor is actually a tubular shaft), thereby greatly reduced the popular response device generation that polyester twines the axle phenomenon has occured in producing high-viscosity polyester, also effectively increased gas-phase space, made small molecules be easy to flow to the riser that is positioned at the kettle top (being valve tube); The membrane internals are arranging quiet scraper plate near the union lever outside and moving scraper plate inboard, moving scraper plate and inner wall of kettle keep less gap, this is conducive in time the melt on kettle, linker and the moving scraper plate be scraped in the high-viscosity polyester production process, not only increased the membrane area, also make the tackify reactor have good self-cleaning function, avoiding to a greater extent melt the dead angle in flow process, to occur.
Membrane internals among the present invention in the 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 in the process of rotating with tubular shaft, possess the melt prograding, thereby further guarantee not occur in the high-viscosity melt flow process back-mixing, improve the product homogeneity, simultaneously, the prograding of membrane internals can also guarantee 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 the 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 the One-step production high-viscosity polyester.This device is applicable to the processing of high sticking material in the 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 the high-viscosity polyester production.The production equipment of continuous production high-viscosity polyester provided by the invention not only can be used for the PET(polyethylene terephthalate), and can be used for the PBS(poly butylene succinate), the PBT(polybutylene terephthalate), the PTT(Poly(Trimethylene Terephthalate)) etc. the production of dissimilar high-viscosity polyesters.
After the present invention adopted said structure, it was short to have flow process, 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 defectives such as the interior high-viscosity polyester production capacity of present 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.
Description of drawings
Fig. 1 is the shaftless high-viscosity polyester continuous production device of list of the present invention synoptic diagram;
Fig. 2 is tackify reactor internals synoptic 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
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1
The shaftless high-viscosity polyester continuous production device of a kind of list, this device is comprised 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 installed on the 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 that is 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 the heat medium system that is connected with heating agent; Be located at the valve tube interface 11 on kettle top, and the vacuum system that is connected with the valve tube interface; The center that the reactor front end has a drive shaft 5 to pass reactor front end end cover 4 is fixedly connected with the linker 3 that is positioned at the reactor interior forward end, the linker that is positioned at the inner rear end of reactor is fixedly connected with the back segment drive shaft, and the back segment drive shaft passes the center of reactor rear end cap 15 and is connected with bearing support 19 on being installed in the reactor rear end cap; Be provided with in the reactor many groups by moving scraper plate 6, move and 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 and movingly scrape panel seat 9, are distributed in and movingly scrape four moving scraper plates 6 on the panel seat, connect adjacent two moving two quiet panel seats 8 of scraping scraping four membrane bars 18, two quiet scraper plates 7 of prelaminar part and be fixed on both sides, barrel lower end with form of flanges; Each is moving, and to scrape panel seat be a annulus centered by the axle center, each moving four moving scraper plate that distribute on the panel seat of scraping; Each moving scraper plate 6 is the T font, and its rear end is fixed on moving scraping on the panel seat 9, and its front end is pressed close to inner tube wall; Quiet scraper plate 7 rectangular crotch shapes, its rear end is fixed on quiet scraping on the panel seat 8, and two quarter bend folding parts of its front end divide the grooved square of formation just in time to be embedded between the T font and union lever 10 of moving scraper plate 6; Each is moving scrapes the panel seat 9 usefulness four piece union levers 10 parallel with the reactor medullary ray and connects into an integral body, and 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 partly 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.
The present invention comes work like this: the molten state material of common viscosity slowly is delivered to the material inlet 2 of tackify reactor at regular time and quantity in the polyester device via control valve, by driving the rotation of membrane internals by drive shaft 5, material constantly advances along with the rotation that is the membrane internals that certain corner mode installs, simultaneously, the devolatilization reaction is occuring in small molecules constantly, taken away by valve tube interface 11 after the reaction, in this process, heating agent is by continuously entering the heating agent entrance 1 on the tackify reactor and being tackify reactor circulating-heating via the heating agent pipeline, afterwards from heating agent pipe outlet 14 out, guaranteed the demand of heat in the whole high-viscosity polyester production process; Meanwhile; vacuum system is constantly operation also; guarantee the vacuum tightness in the reaction process; thereby small molecules is more easily deviate from; after certain residence time; material is via material outlet 16 dischargings of tackify reactor, and the equipment such as spinning manifold or dicing machine that are delivered to via the melt Conveying system carry out respectively different downstream production processes.
Implementation result:
Be the polyester fondant of 0.68dl/g with material characteristic viscosity, send into the shaftless high-viscosity polyester continuous production device of above-mentioned list, 285 ℃ of temperature, vacuum tightness is 100Pa, rotating speed be 5 turn/react 30min under the condition of min, obtain the melt that limiting viscosity is 0.95dl/g.
Embodiment 2
The shaftless high-viscosity polyester continuous production device of a kind of list of present embodiment, its primary structure is substantially the same manner as Example 1, different is, and this installs each and movingly scrapes uniform three moving scraper plates on the panel seat, connecting adjacent two moving membrane bars of scraping prelaminar part is three, and each is moving scrapes panel seat and use the three piece union levers parallel with the reactor medullary ray to connect into an integral body.
Implementation result:
Be the polyester fondant of 0.75dl/g with material characteristic viscosity, send into the shaftless high-viscosity polyester continuous production device of above-mentioned list, 288 ℃ of temperature, vacuum tightness is 50Pa, rotating speed be 5 turn/react 25min under the condition of min, obtain the melt that limiting viscosity is 1.05dl/g.
Claims (7)
1. 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 that is 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 the heat medium system that is connected with heating agent; Be located at the valve tube interface on kettle top, and the vacuum system that is connected with the valve tube interface; It is characterized in that, the center that the still front end has a drive shaft to pass the reactor front end end cover is fixedly connected with the linker of still Inner Front End, the linker that is positioned at the still rear end is fixedly connected with the back segment drive shaft, and the back segment drive shaft passes the center of reactor rear end cap and is connected with bearing support on being installed in rear end cap; Be provided with many group membrane internals in the reactor, every group of membrane internals comprise one and movingly scrape panel seat, are distributed in and movingly scrape a plurality of moving scraper plate on the panel seat, connect adjacent two moving two quiet panel seats of scraping scraping a plurality of membrane bars, two quiet scraper plates of prelaminar part and be fixed on both sides, barrel lower end with form of flanges; Each is moving, and to scrape panel seat be a annulus centered by the axle center; Each moving scraper plate is the T font, and its rear end is fixed on moving scraping on the 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 the panel seat, and two quarter bend folding parts of its front end divide the grooved square of formation just in time to be embedded between the T font and union lever of moving scraper plate; Each is moving scrapes panel seat and uses the many piece union levers parallel with the reactor medullary ray to connect into an integral body, and the two ends of union lever are fixed on the linker at forward and backward two ends in the still.
2. the shaftless high-viscosity polyester continuous production device of list according to claim 1 is characterized in that, each moves and scrapes uniform three or four moving scraper plates on the panel seat.
3. the shaftless high-viscosity polyester continuous production device of list according to claim 1 and 2 is characterized in that, each is moving scrapes panel seat and use parallel with the reactor medullary ray three or four union levers to connect into an integral body.
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 the 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 the 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 partly 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.
7. the shaftless high-viscosity polyester continuous production device of list according to claim 5 is characterized in that, it partly 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.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN201210319913.0A CN102942688B (en) | 2012-08-31 | 2012-08-31 | Single-shaft/shaft-free high-viscosity polyester continuous production device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN106268591A (en) * | 2016-09-23 | 2017-01-04 | 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 |
| CN109054005A (en) * | 2018-09-03 | 2018-12-21 | 林枫 | A kind of 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 |
| CN111545152A (en) * | 2020-04-24 | 2020-08-18 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111545152A (en) * | 2020-04-24 | 2020-08-18 | 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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