CN106268591B - A kind of polymerization reaction kettle and method for making polyester - Google Patents
A kind of polymerization reaction kettle and method for making polyester Download PDFInfo
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- CN106268591B CN106268591B CN201610848575.8A CN201610848575A CN106268591B CN 106268591 B CN106268591 B CN 106268591B CN 201610848575 A CN201610848575 A CN 201610848575A CN 106268591 B CN106268591 B CN 106268591B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/785—Preparation processes characterised by the apparatus used
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00092—Tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyesters Or Polycarbonates (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
Abstract
The invention discloses a kind of polymerization reaction kettle and method for making polyester.Polymerization reaction kettle includes the horizontal cylinder of sealing, and material inlet is provided with front end shaft in cylinder, and one end of front end shaft is stretched out from cylinder and connect with power plant one；Material outlet is provided with rear end shaft in cylinder, one end of rear end shaft is stretched out from cylinder and connect with power plant two；The support construction of bearing front end shaft and rear end shaft is equipped in cylinder；Cage gate stirrer is provided in the shaft of front end；In the shaft of rear end one section of spiral disk is provided at front end shaft；Rear end shaft rest part is provided with multigroup coaxial annulus, and several scrapers parallel with anchor ring are provided between every group of annulus.Method is to carry out production of polyester using above-mentioned polymerization reaction kettle to obtain high-viscosity polyester melt.Cage gate stirrer is arranged in front end the present invention, and multigroup annulus is arranged in rear end, the devolatilization efficiency of equipment can be effectively improved.
Description
Technical field
The invention belongs to polyester producing process fields, are related to a kind of important equipment of production of polyester, more particularly to a kind of use
In the polymerization reaction kettle and method for making polyester of production of polyester.
Background technology
Polymerization reaction kettle is the important equipment of production of polyester.The Chinese patent of Publication No. CN201684605U
(CN201020175319.5) the combined type polymerization reaction kettle in a kind of polyester production device field is disclosed, it includes sealing
Horizontal cylinder, described cylinder one end are equipped with material inlet, and the other end is equipped with material outlet, goes out equipped with gas phase above the cylinder
Mouthful, shaft one is equipped in cylinder, shaft one is equipped with multigroup disk, and the end of shaft one is stretched out from one end of cylinder；Described turn
Axis one is arranged in material inlet one end；Shaft two is additionally provided with close to material outlet one end, the shaft two is from cylinder in cylinder
The other end stretches out, and the supporting device of bearing shaft one and shaft two is additionally provided in cylinder；Shaft two is equipped with squirrel-cage blender.
The setting of disk can make material stirring abundant, achieve the effect that laminar flow reacts, and squirrel-cage blender has material good
Stirring filming function, the evaporation surface of material is significantly greatly increased, the further polycondensation of material can be promoted.
There are the low defects of devolatilization efficiency during actual production use for above-mentioned CN201020175319.5 patents, former
Because as follows：According to distribution of the material in polymerization reaction kettle, front equipment end material viscosity is smaller, good fluidity, closer to rear end,
Material viscosity is bigger, and mobility is poorer；Due to being multigroup disk in the shaft one of front end, stirred for squirrel-cage in the shaft two of rear end
Mix device；In polymerization reaction kettle, the low viscosity material of front end has faster flowing velocity on disk, and film forming area is small, when
Between it is short, simultaneously because material mobility itself is preferable, by gravity, it is difficult to which the top half in disk and partition board is formed effectively
Film causes devolatilization efficiency low；And due to component complicated inside squirrel-cage blender, the high-viscosity material of rear end is in the above very
Difficulty only relies on dead weight and flows down and form a film.
Invention content
It is an object of the present invention to overcome the deficiencies of the prior art and provide a kind of devolatilization effect that can effectively improve equipment
The polymerization reaction kettle and method for making polyester of rate.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of polymerization reaction kettle, it includes the horizontal cylinder of sealing, and described cylinder one end is equipped with material inlet, and the other end is set
There is material outlet；The cylinder is equipped with gaseous phase outlet and is connect with vacuum system；Material inlet is provided with front end in cylinder
One end of shaft, front end shaft is stretched out from cylinder and is connect with power plant one；Material outlet is provided with rear end in cylinder
One end of shaft, rear end shaft is stretched out from cylinder and is connect with power plant two；Front end shaft, rear end shaft pass through machinery respectively
Sealing is connect with cylinder；The support construction of bearing front end shaft and rear end shaft is equipped in cylinder；It is provided with cage in the shaft of front end
Gate stirrer；In the shaft of rear end one section of spiral disk is provided at front end shaft；Rear end shaft rest part setting
There is multigroup coaxial annulus.
Further, several scrapers parallel with anchor ring are provided between every group of annulus in the cylinder, it is described
Scraper is fixedly connected with cylinder.The effect of scraper is that high-viscosity material is made to form a film on annulus.
Further, the scraper radially has certain angle with cylinder, and the angle is between 30 degree to 60 degree.
Further, every group of annulus is made of the annulus of several different-diameters, the annulus of several different-diameters
It is in the same plane, and be fixedly connected by intermediate support；During intermediate support is fixed on including a center ring and one end
More support bars on thimble, center ring are fixed in the shaft of rear end, and the annulus of several different-diameters is fixed on more supports
On item.The number of annulus can be determined according to the size (size of barrel diameter) of specific equipment：Smaller (the cylinder of equipment size
Diameter is small) when, single annulus can be used；When equipment size big (barrel diameter is big), single annulus is such as used, then material is in list
It is difficult to form a film above a annulus, it is necessary to increase number of rings, it is single formable to reduce using the annulus of multiple and different diameters
Film area, be conducive to material form a film devolatilization.
Further, scraper plate is provided on the outside of the cage gate stirrer, scraper plate axially has certain angle with cylinder,
The angle is between 0 degree to 5 degree.
Further, the cage gate stirrer is slightly larger than other end diameter close to material inlet one end diameter.
Further, the cylinder be Double-layer clamp shell type heat tracing cylinder, cylinder be equipped with heating agent entrance and heating agent outlet with
Jacket space is connected to.
Further, it is provided with heating coil outside the cylinder, heating agent entrance, heating agent outlet is provided on heating coil
And exhaust outlet；Heating coil section can be random geometry.
Further, part cylinder is Double-layer clamp shell type heat tracing cylinder, which is equipped with heating agent entrance and heating agent
Outlet is connected to jacket space；It is provided with heating coil outside another part cylinder, heating agent entrance, heat are provided on heating coil
Matchmaker exports and exhaust outlet.
The applicable material feedstock characteristic viscosity of the polymerization reaction kettle is 0.15dL/g~0.40dL/g；Applicable temperature is
260 DEG C~295 DEG C；Applicable pressure is absolute pressure 0Pa~2000Pa；Feedstock characteristic viscosity is 0.15dL/g~0.40dL/g
Material, in the polymerization reaction kettle reaction stop 50min~150min, discharging inherent viscosity can reach 0.6dL/g~
1.0dL/g。
A kind of method carrying out production of polyester using above-mentioned polymerization reaction kettle is as follows：It is 0.15dL/g by material characteristic viscosity
The polyester fondant of~0.40dL/g is continuously introduced into above-mentioned polymerization reaction kettle, in 260 DEG C~295 DEG C of temperature, absolute pressure 0Pa~
50min~150min is reacted under conditions of 2000Pa, and the polyester fondant that inherent viscosity is 0.6dL/g~1.0dL/g is prepared.
Further, it by the polyester fondant that material characteristic viscosity is 0.15dL/g~0.40dL/g, is continuously introduced into above-mentioned poly-
Reaction kettle is closed, 50min~150min, system are reacted under conditions of 270 DEG C~280 DEG C of temperature, absolute pressure 100Pa~1000Pa
It is standby to obtain the polyester fondant that inherent viscosity is 0.6dL/g~1.0dL/g.
Beneficial effects of the present invention：
Cage gate stirrer is arranged in front end, low viscosity material can be made to be sufficiently stirred by the polymerization reaction kettle of the present invention
And reach film-formation result, increase material devolatilization area, improve rate of polymerization, increases material viscosity；After cage gate stirrer
One section of spiral disk is set, material can effectively be pushed to be moved to discharge end；Several multigroup annulus are arranged in rear end, energy
The further polycondensation of high-viscosity material is enough promoted (to make high-viscosity material that can form effective film on each annulus, and the area that forms a film
Greatly, devolatilization area is thus effectively increased, Efficient Adhesive Promotion has been reached).The device devolatilization is efficient, can ensure polymerisation
Speed is fast, and applicable material viscosity range is wide, can be used for the production of various polyester.
The present invention has the following advantages that compared with the prior art (CN201020175319.5 patents)：
(1) cage gate stirrer is arranged in front end, than the benefit for having bigger in rear end is arranged.
Cage gate stirrer is after being brought in cage frame using material, material by dead weight along cage frame flow down nature at
Film, to increase material devolatilization area.It forms a film since it only relies on material dead weight, it requires that material viscosity cannot be too big,
Otherwise material dead weight is relied on to flow down too slowly, film forming is difficult, and efficiency is low.According to distribution of the material in polymerization reaction kettle, poly-
It closes in reaction kettle, closer to material inlet section (front equipment end), material viscosity is lower, closer to material outlet section (after equipment
End), material viscosity is higher.
Cage gate stirrer is arranged in front end the present invention, then the low viscosity material of front end is more easily in cage frame by certainly
It under density current and forms a film, to effectively improve devolatilization area, reaches Efficient Adhesive Promotion.Therefore, cage gate stirrer is arranged the present invention
In front end, the devolatilization efficiency of equipment can be effectively improved.
And in CN201020175319.5 patents, squirrel-cage blender is arranged in rear end, due to squirrel-cage blender
Internal complicated component, the high-viscosity material of rear end is difficult to only rely on dead weight to flow down and form a film in the above.
(2) multigroup annulus is arranged in rear end, than the benefit for having bigger in front end is arranged.
It is multigroup disk in the shaft one of front end in CN201020175319.5 patents, due in polymerization reaction kettle,
The low viscosity material of front end has faster flowing velocity on disk, and film forming area is small, and the time is short, simultaneously because material itself
Mobility is preferable, by gravity, it is difficult to form effective film in the top half of disk and partition board, causes devolatilization efficiency low.
And in the present invention, by the setting of multigroup annulus in rear end, due in polymerization reaction kettle, the high-viscosity material of rear end by
It is big in viscosity, slower flowing velocity is had on annulus, film forming area is big, and the time is long, in addition the effect of scraper, makes material
Effective film can be formed between multiple annulus on each annulus and on every group of annulus, thus effectively increases devolatilization face
Product, has reached Efficient Adhesive Promotion.Therefore, multigroup annulus is arranged in rear end the present invention, can effectively improve the devolatilization efficiency of equipment,
Improve discharging viscosity.
(3) reaction kettle rear end is designed to multigroup annulus, than the benefit for being designed to multigroup disk bigger.
Reaction kettle rear end is designed to multigroup annulus being made of the annulus of several different-diameters in the present invention, makes material
Form a film between the annulus of multiple and different diameters, two faces of surfaces externally and internally of the film of formation can devolatilization, which increases
Devolatilization area；And in CN201020175319.5 patents, it forms a film on multigroup disk, then the film formed only has inner surface one
Face can be with devolatilization, and devolatilization area is relatively small.Therefore, reaction kettle rear end is designed to multigroup annulus by the present invention, can effectively be carried
High devolatilization area improves discharging viscosity to effectively improve the devolatilization efficiency of equipment.
Description of the drawings
Fig. 1 is a kind of main structure diagram of polymerization reaction kettle of the present invention；
Fig. 2 is the side structure schematic view of every group of annulus 6 in the present invention；
Fig. 3 is the distribution schematic diagram (side view) of the scraper 7 in the present invention in the same plane.
In figure：1 material inlet, 2 cage gate stirrers, 3 scraper plates, 4 front end shafts, 5 spiral disks, 6 annulus, 61 great circles
Ring, 62 small circle rings, 7 scrapers, 8 rear end shafts, 9 support constructions, 10 material outlets, 11 heating agent entrances, the outlet of 12 heating agents, 13 gas phases
Outlet, 14 support bars, 15 center rings.
Specific implementation mode
Below in conjunction with drawings and examples, the present invention is further illustrated.
Embodiment 1
As shown in Figure 1, a kind of polymerization reaction kettle of the present invention, it includes the horizontal cylinder of sealing, and described cylinder one end is equipped with
Material inlet 1, the other end are equipped with material outlet 10；The cylinder is equipped with gaseous phase outlet 13 and is connect with vacuum system；In cylinder
Material inlet is provided with front end shaft 4, one end of front end shaft is stretched out from cylinder and connect with power plant one；In cylinder
Material outlet is provided with rear end shaft 8, one end of rear end shaft is stretched out from cylinder and connect with power plant two；Front end turns
Axis, rear end shaft are connect by mechanical seal with cylinder respectively；The support of bearing front end shaft and rear end shaft is equipped in cylinder
Structure 9；Cage gate stirrer 2 is provided in the shaft of front end；In the shaft of rear end one section is provided at front end shaft spirally
Disk 5；Rear end shaft rest part is provided with multigroup coaxial annulus 6.
As shown in figure 3, three scrapers 7 parallel with anchor ring are provided in the cylinder between every group of annulus, three
Scraper 7 is fixedly connected with cylinder.Three scrapers 7 radially have certain angle with cylinder, and the angle is between 30 degree to 60 degree.
As shown in Fig. 2, annulus (the i.e. large circle 61 and small circle ring 62) group of every group of annulus 6 by two different-diameters
At the annulus of two different-diameters is in the same plane, and is fixedly connected with that (intermediate support includes one by intermediate support
Center ring 15 and one end are fixed on three support bars 14 on center ring 15, and center ring 15 is fastened in rear end shaft 8, large circle
61 and small circle ring 62 be fixed on three support bars 14).It is empty between large circle 61 and small circle ring 62.High-viscosity material is two
Film is formed on a annulus and between two annulus, is conducive to material devolatilization.High-viscosity material is from large circle 61 and small circle ring 62
Between by when, since material viscosity is big, material has slower flowing velocity on annulus, in addition the effect of scraper, makes object
Material can form effective film on each annulus and between two annulus, and the area that forms a film is big, and the time is long, thus effectively carries
High devolatilization area, has reached Efficient Adhesive Promotion.
As shown in Figure 1, being provided with scraper plate 3 on the outside of the cage gate stirrer, scraper plate axially has certain folder with cylinder
Angle, the angle is between 0 degree to 5 degree.The cage gate stirrer is slightly larger than other end diameter close to material inlet one end diameter.
Cylinder leading portion (the part cylinder for the being equipped with cage gate stirrer) outside is provided with heating coil, heating dish
Tube section can be random geometry, and heating agent entrance 11, heating agent outlet 12 and exhaust outlet are provided on heating coil.The cylinder
Back segment (the part cylinder for being equipped with multigroup annulus) is Double-layer clamp shell type heat tracing cylinder, and cylinder is equipped with heating agent entrance 11 and heat
Matchmaker outlet 12 is connected to jacket space.
Barrel front end and rear end are equipped with temperature sensor and pressure sensor (in Fig. 1 the upper left corner and the upper right corner shown in).
The applicable material feedstock characteristic viscosity of the polymerization reaction kettle is 0.15dL/g~0.40dL/g；Applicable temperature is
260 DEG C~295 DEG C；Applicable pressure is absolute pressure 0Pa~2000Pa；The applicable residence time is：50min~150min；
Polymerization reaction kettle discharging inherent viscosity reaches 0.6dL/g~1.0dL/g.
Embodiment 2
A kind of method carrying out production of polyester using polymerization reaction kettle described in embodiment 1 is as follows：
By the polyester fondant that material characteristic viscosity is 0.25dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 275
DEG C, 150min is reacted under conditions of absolute pressure 400Pa, the polyester fondant that inherent viscosity is 0.87dL/g is prepared.
Embodiment 3
A kind of method carrying out production of polyester using polymerization reaction kettle described in embodiment 1 is as follows：
By the polyester fondant that material characteristic viscosity is 0.40dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 270
DEG C, 150min is reacted under conditions of absolute pressure 250Pa, the polyester fondant that inherent viscosity is 1.0dL/g is prepared.
Embodiment 4
A kind of method carrying out production of polyester using polymerization reaction kettle described in embodiment 1 is as follows：
By the polyester fondant that material characteristic viscosity is 0.21dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 265
DEG C, 60min is reacted under conditions of absolute pressure 100Pa, the polyester fondant that inherent viscosity is 0.67dL/g is prepared.
Embodiment 5
A kind of method carrying out production of polyester using polymerization reaction kettle described in embodiment 1 is as follows：
By the polyester fondant that material characteristic viscosity is 0.15dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 260
DEG C, 50min is reacted under conditions of absolute pressure 0Pa, the polyester fondant that inherent viscosity is 0.6dL/g is prepared.
Embodiment 6
A kind of method carrying out production of polyester using polymerization reaction kettle described in embodiment 1 is as follows：
By the polyester fondant that material characteristic viscosity is 0.32dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 280
DEG C, 120min is reacted under conditions of absolute pressure 1000Pa, the polyester fondant that inherent viscosity is 0.91dL/g is prepared.
Embodiment 7
A kind of method carrying out production of polyester using polymerization reaction kettle described in embodiment 1 is as follows：
By the polyester fondant that material characteristic viscosity is 0.25dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 295
DEG C, 90min is reacted under conditions of absolute pressure 2000Pa, the polyester fondant that inherent viscosity is 0.78dL/g is prepared.
Claims (7)
1. a kind of polymerization reaction kettle, it includes the horizontal cylinder of sealing, and described cylinder one end is equipped with material inlet, and the other end is equipped with
Material outlet；The cylinder is equipped with gaseous phase outlet and is connect with vacuum system；It is characterized in that：It is set close to material inlet in cylinder
It is equipped with front end shaft, one end of front end shaft is stretched out from cylinder and connect with power plant one；It is set close to material outlet in cylinder
It is equipped with rear end shaft, one end of rear end shaft is stretched out from cylinder and connect with power plant two；Front end shaft, rear end shaft difference
It is connect with cylinder by mechanical seal；The support construction of bearing front end shaft and rear end shaft is equipped in cylinder；In the shaft of front end
It is provided with cage gate stirrer；In the shaft of rear end one section of spiral disk is provided at front end shaft；Rear end shaft remaining
Part is provided with multigroup coaxial annulus；
Several scrapers parallel with anchor ring are provided between every group of annulus in the cylinder, the scraper is fixed with cylinder
Connection；The scraper radially has certain angle with cylinder, and the angle is between 30 degree to 60 degree；
Every group of annulus is made of the annulus of several different-diameters, and the annulus of several different-diameters is generally aligned in the same plane
On, and be fixedly connected by intermediate support；Intermediate support includes a center ring and one end is fixed on more on center ring
Support bar, center ring are fixed in the shaft of rear end, and the annulus of several different-diameters is fixed on more support bars；Several are not
With being empty between the annulus of diameter；
The applicable material feedstock characteristic viscosity of the polymerization reaction kettle is 0.15dL/g~0.40dL/g；Applicable temperature is 260
DEG C~295 DEG C；Applicable pressure is absolute pressure 0Pa~2000Pa；Feedstock characteristic viscosity is 0.15dL/g~0.40dL/g's
Material, in the polymerization reaction kettle reaction stop 50min~150min, discharging inherent viscosity can reach 0.6dL/g~
1.0dL/g。
2. polymerization reaction kettle as described in claim 1, which is characterized in that it is provided with scraper plate on the outside of the cage gate stirrer,
Scraper plate axially has certain angle with cylinder, and the angle is between 0 degree to 5 degree.
3. polymerization reaction kettle as claimed in claim 1 or 2, which is characterized in that the cage gate stirrer is close to material inlet
One end diameter is slightly larger than other end diameter.
4. polymerization reaction kettle as claimed in claim 1 or 2, which is characterized in that the cylinder is Double-layer clamp shell type heat tracing cylinder,
Cylinder is equipped with heating agent entrance and heating agent outlet is connected to jacket space.
5. polymerization reaction kettle as claimed in claim 1 or 2, which is characterized in that be provided with heating coil outside the cylinder, add
Heating agent entrance, heating agent outlet and exhaust outlet are provided on hot coil；Heating coil section is random geometry.
6. polymerization reaction kettle as claimed in claim 1 or 2, which is characterized in that part cylinder is Double-layer clamp shell type heat tracing cylinder,
The part cylinder is equipped with heating agent entrance and heating agent outlet is connected to jacket space；It is provided with heating dish outside another part cylinder
It manages, heating agent entrance, heating agent outlet and exhaust outlet is provided on heating coil.
7. a kind of method that polymerization reaction kettle using as described in claim 1-6 is any carries out production of polyester, which is characterized in that
By the polyester fondant that material characteristic viscosity is 0.15dL/g~0.40dL/g, it is continuously introduced into above-mentioned polymerization reaction kettle, in temperature 260
DEG C~295 DEG C, 50min~150min is reacted under conditions of absolute pressure 0Pa~2000Pa, inherent viscosity, which is prepared, is
The polyester fondant of 0.6dL/g~1.0dL/g.
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| CN201610848575.8A CN106268591B (en) | 2016-09-23 | 2016-09-23 | A kind of polymerization reaction kettle and method for making polyester |
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| 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 |
| CN110280202B (en) * | 2019-06-18 | 2020-11-27 | 中国科学院过程工程研究所 | Final polycondensation reactor for preparing polycarbonate |
| CN110270289B (en) * | 2019-07-02 | 2020-11-20 | 中国科学院过程工程研究所 | Ultrahigh-sealing polycarbonate reaction device |
| CN111545152B (en) * | 2020-04-24 | 2022-03-29 | 浙江恒澜科技有限公司 | Disc reactor with scraper device |
| CN111701553B (en) * | 2020-05-19 | 2022-05-10 | 浙江恒澜科技有限公司 | Polymerization reactor suitable for high-viscosity PTT production |
| CN113797872A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Final polycondensation reactor and method for producing polyester |
| CN113797850A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Cage frame type final polycondensation reactor and method for producing polyester |
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