CN106700054B - PBT vacuum polymerization device vacuum evacuation device - Google Patents
PBT vacuum polymerization device vacuum evacuation device Download PDFInfo
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- CN106700054B CN106700054B CN201611191560.5A CN201611191560A CN106700054B CN 106700054 B CN106700054 B CN 106700054B CN 201611191560 A CN201611191560 A CN 201611191560A CN 106700054 B CN106700054 B CN 106700054B
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- vacuum
- tube
- vacuum tube
- reaction kettle
- fixing piece
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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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- 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
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
Abstract
The invention discloses a kind of PBT vacuum polymerization device vacuum evacuation devices, including vacuum tube, the vacuum tube to be controlled to a vacuum pump, and vapor collection device, anti-gas reflux apparatus are successively arranged on vacuum tube；One end of the vacuum tube is connect by sealing flange with the reaction kettle being arranged on frame body, the vacuum tube is equipped with the vacuum meter for showing vacuum degree in reaction kettle, vacuum tube after the vacuum meter is equipped with total valve, and the total valve is located at before vapor collection device.Vacuum degree in reaction kettle of the present invention is shown by vacuum meter; operator adjusts vacuum degree in reaction kettle according to actual needs; it keeps can achieve raised vacuum degree step by step in reaction kettle; vapor is absorbed by vapor collection device; avoid vacuum pump failure; prolong the service life, anti-gas reflux apparatus has the function that can prevent gas backstreaming in improper unexpected shutdown, vacuum leak, avoids material waste.
Description
Technical field
The present invention relates to PBT production equipment technology more particularly to a kind of PBT vacuum polymerization device vacuum means
It sets.
Background technique
The molecular weight and yield of PBT polymerizate gradually increase, and the time for reaching polymerization reaction terminal needs to grow very much, to keep away
Exempt from material and be subjected to long-time high-temperature oxydation, entire polymerization process requires depressurizing and carrying out under nitrogen protection.To accelerate
Condensation polymerization speed needs to step up vacuum degree, and small molecule by-product is removed only, makes reaction balance to polymerizate direction
It carries out.Polymerization initial stage, polymer molecular weight is lower, and system viscosity is not high, stirring, mixing, heat transfer, mass transfer (low molecule by-product
Discharge) etc. it is not difficult；It polymerize the later period, melt viscosity may be up to several hundred Pa Secs, transmit extremely difficult.It is asked to solve this
Topic industrially uses different operating methods to different monomers, and classification is needed to be vacuumized, and the polymerization later period needs in Gao Zhen
It is operated under reciprocal of duty cycle, to improve molecular weight.And steam cannot effectively be extracted steam discharge pump by vacuumizing the vacuum pump used such as
Chamber, then steam will condense in pump chamber.This, which will lead to vacuum pump lubricating oils emulsion deterioration occurs, seriously affects vacuum pump and can reach
The limiting pressure arrived, greasy property decline, abrasion aggravation, cisco unity malfunction, or even the components such as the pump housing and rotor will be caused
Serious corrosion occurs, complete machine is caused to scrap, phenomena such as gas backstreaming in improper unexpected shutdown, vacuum leak, meeting
The material polymerization reaction in reaction kettle is seriously affected, so as to cause the material waste in reaction kettle.Therefore for PBT vacuum polymerization
The requirement of device vacuum evacuation device is to can achieve raised vacuum degree step by step in reaction kettle, and have can prevent it is non-just
The function of gas backstreaming, vacuum leak in the case of often shutting down suddenly.
Through retrieving, Chinese patent Authorization Notice No. CN202220146U, the invention that authorized announcement date is 2012.05.16 are special
Benefit discloses a kind of PBT vacuum polymerization device pumped vacuum systems, including reaction kettle, and the reaction kettle is set on a bracket, described
Reaction kettle stretches out a vacuum tube, and the vacuum tube is connected with a vacuum pump, and the vacuum pump is equipped with exhaust pipe.With single vacuum
Pump individually vacuumizes single reaction kettle.
The disclosure of the invention of Chinese patent Authorization Notice No. CN202570176U, authorized announcement date 2012.12.05 is a kind of double
Vacuum evacuation device in cone revolution vacuum reaction kettle, belongs to chemical mechanical equipment technical field.It includes vacuum sealing head, takes out very
Blank pipe road and vacuum pump, the vacuum sealing head being set in reaction kettle inner cavity by be connected vacuumize filter, straight-tube portion and
Pedestal composition, the centre bore that straight-tube portion passes through pedestal are connect with vacuum-pumping pipeline, and vacuum-pumping pipeline is connected to vacuum pump, pedestal
Stuffing-box is formed between vacuum-pumping pipeline and filler is housed, and gland compresses filler from outside.Vacuum sealing head is direct
It protrudes into inside reaction kettle, packing seal structure is provided between the pedestal and vacuum-pumping pipeline of vacuum evacuation device, is revealed
When, it is easy discovery in time, it is only necessary to which leakage can be eliminated by compressing filler.
Above-mentioned two pieces patent can not preferably keep can achieve raised vacuum degree step by step in reaction kettle, cannot inhale
Vapor is received, does not have the function that can prevent gas backstreaming in improper unexpected shutdown, vacuum leak.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of PBT vacuum polymerization device vacuum evacuation device, can achieve in holding reaction kettle and increases step by step
Vacuum degree, vapor can be absorbed, prolong the service life, having can prevent gas in improper unexpected shutdown from returning
The function of stream, vacuum leak, avoids material waste.
A kind of PBT vacuum polymerization device vacuum evacuation device according to an embodiment of the present invention, including vacuum tube, the vacuum
Pipe is controlled to a vacuum pump, and vapor collection device, anti-gas reflux apparatus are successively arranged on vacuum tube；
One end of the vacuum tube is connect by sealing flange with the reaction kettle being arranged on frame body, is set on the vacuum tube
There is the vacuum meter for showing vacuum degree in reaction kettle, the vacuum tube after the vacuum meter is equipped with total valve, the total valve
Before vapor collection device；
The vapor collection device includes condenser pipe and collecting tank, and the condenser pipe is set on vacuum tube, the receipts
Collection tank is arranged in the lower section of vacuum tube and is connected to vacuum tube；
The anti-gas reflux apparatus includes connecting tube, fixing piece, movable part, and the both ends of the connecting tube and vacuum tube connect
Logical, the fixing piece is fixed in connecting tube, and the fixing piece is equipped with upper gas channel and lower gas channel, under described
The outlet of portion's gas passage is hinged with a baffle, and step, institute are equipped between the upper gas channel and lower gas channel
The top for stating upper gas channel is equipped with slope, and the movable part is arranged in fixing piece and is slidably matched with fixing piece, activity
One end of part is matched with the step of the fixing piece and ramp shaped, and this one end of movable part is equipped with sealant, described
The rear end of fixing piece is protruding with for limiting the movable locating part of movable part.
In some embodiments of the invention, the vacuum pump is equipped with exhaust pipe.
In some embodiments of the invention, the bottom of the collecting tank is equipped with drainpipe, and the drainpipe is equipped with valve
Door.
In some embodiments of the invention, the top in the fixing piece is equipped with the sliding rail for movable part sliding.
It further include filter screen in other embodiments of the invention, the filter screen is arranged in vacuum tube close to total
One end of valve.
In the present invention, the vacuum degree in reaction kettle is shown by vacuum meter, and operator adjusts reaction according to actual needs
Vacuum degree in kettle keeps can achieve raised vacuum degree step by step in reaction kettle, absorbs vapor by vapor collection device,
Vacuum pump failure is avoided, is prolonged the service life, anti-gas reflux apparatus has and can prevent in improper unexpected shutdown situation
Under gas backstreaming, vacuum leak function, avoid material waste.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of PBT vacuum polymerization device vacuum evacuation device proposed by the present invention；
Fig. 2 is the structural schematic diagram of vapor collection device；
Fig. 3 is the structural schematic diagram of anti-gas reflux apparatus；
Fig. 4 is the enlarged drawing at the position A.
In figure: 1 vacuum tube, 2 vacuum pumps, 21 exhaust pipes, 3 vapor collection devices, 31 condenser pipes, 32 collecting tanks, 321 rows
Water pipe, 4 anti-gas reflux apparatus, 41 connecting tubes, 42 fixing pieces, 421 upper gas channels, 422 lower gas channels, 423 gears
Piece, 424 steps, 425 slopes, 426 locating parts, 43 movable parts, 431 sealants, 5 frame bodies, 6 reaction kettles, 7 vacuum meters, 8 main valves
Door.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, purport
It is being used to explain the present invention, and is being not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-4, a kind of PBT vacuum polymerization device vacuum evacuation device, including vacuum tube 1, the vacuum tube 1 with it is true
Sky pump 2 connects, and is successively arranged vapor collection device 3, anti-gas reflux apparatus 4 on vacuum tube 1；
One end of vacuum tube 1 is connect by sealing flange with the reaction kettle 6 being arranged on frame body 5, and vacuum tube 1, which is equipped with, to be used
Vacuum tube 1 after the vacuum meter 7 of vacuum degree in display reaction kettle 6, vacuum meter 7 is equipped with total valve 8, and total valve 8 is located at water
Before vapor collection device 3；
Vapor collection device 3 includes condenser pipe 31 and collecting tank 32, and condenser pipe 31 is set on vacuum tube 1, condenser pipe
For spiral shape, inside is connected with cold water, and collecting tank 32 is arranged in the lower section of vacuum tube 1 and is connected to vacuum tube 1；
Anti- gas reflux apparatus 4 includes connecting tube 41, fixing piece 42, movable part 43, and the both ends of connecting tube 41 pass through sealing
Flange is connected to vacuum tube 1, and fixing piece 42 is fixed in connecting tube 41, and fixing piece 42 is equipped with upper gas channel 421 under
Portion's gas passage 422, the outlet in lower gas channel 422 are hinged with a baffle 423, upper gas channel 421 and lower part gas
Step 424 is equipped between body channel 422, step round corner treatment is bonded, the top in upper gas channel 421 convenient for movable part
Equipped with slope 425, tilt angle is 30 °, and movable part 43 is arranged in fixing piece 42 and is slidably matched with fixing piece 42, activity
One end of part 43 is matched with the shape of the step 424 of fixing piece 42 and slope 425, and this one end of movable part 43 is equipped with and adopts
With the sealant 431 of rubber material, upper gas channel 421 and lower gas channel 422 can be blocked completely, it is ensured that sealing effect
Fruit, the rear end of fixing piece 42 are protruding with for limiting the movable locating part 426 of movable part 43, the vacuum pump used in the present embodiment
Model with vacuum meter is model commonly used by those skilled in the art.
Wherein, vacuum pump 2 is equipped with exhaust pipe 21, and the bottom of collecting tank 32 is equipped with drainpipe 321, sets on drainpipe 321
There is valve, it further includes filter screen that the top in fixing piece 42, which is equipped with the sliding rail slided for movable part 43, and filter screen is arranged true
Close to one end of total valve 8 in blank pipe 1, filter screen makees filter using metal sintering net cover, and easy to clean, easy disinfection is gone out
Bacterium, and adapted high pure nitrogen blowback prevent particulate dust from blocking filter mesh, it is ensured that vacuum is unimpeded.
It needs to be classified when PBT polymerization reaction to be vacuumized, the polymerization later period needs to operate under condition of high vacuum degree, with raising point
Son amount.Vacuum degree in reaction kettle 6 shows that operator adjusts vacuum degree in reaction kettle 6 according to actual needs by vacuum meter,
It keeps can achieve raised vacuum degree step by step in reaction kettle 6.
And vacuumize the vacuum pump used such as and cannot effectively extract steam and pump chamber is discharged in steam, then steam will condense in
In pump chamber.This will lead to vacuum pump lubricating oils generation emulsion deterioration and seriously affects the attainable limiting pressure of vacuum pump institute, lubrication
Performance decline, abrasion aggravation, cisco unity malfunction, or even will cause the components such as the pump housing and rotor that serious corrosion occurs, it causes
Complete machine is scrapped, and absorbs vapor using vapor collection device 3 in the present embodiment, keeps the vapor of high temperature solidifying by condenser pipe 31
Knot is collected in water droplet by collecting tank 32, need to only be closed the water in 8 regular discharge collecting tank 32 of total valve, be avoided vacuum
2 failures are pumped, are prolonged the service life.
It phenomena such as gas backstreaming in improper unexpected shutdown, vacuum leak, can seriously affect in reaction kettle
Material polymerization reaction avoids gas using anti-gas reflux apparatus 4 in the present embodiment so as to cause the material waste in reaction kettle 6
Body reflux, it includes connecting tube 41, fixing piece 42, movable part 43, when pumping, due to the pumping of vacuum pump 2 and lower gas channel
The air pressure of the blocking of 422 exit baffle 423, the right side of movable part 43 is lower, and movable part 43 is to the right under the promotion of draught head
Sliding, is connected to upper gas channel 421 with lower gas channel 422, completes pumping action；When gas backstreaming of breaking down
When, since 43 left side air pressure of movable part is low, and the outlet in lower gas channel 422 is also sucked back into the baffle 423 come and blocks, gas
Pressure difference slides movable part to the left, tightly blocks upper gas channel 421 and lower gas channel 422, due to sealant 431
Presence, sealing effect is good, does not have gas leakage, can prevent gas backstreaming in improper unexpected shutdown, vacuum
The phenomenon that leakage, occurs, and is convenient for on-call maintenance, avoids material waste.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of PBT vacuum polymerization device vacuum evacuation device, it is characterised in that: including vacuum tube, the vacuum tube and vacuum
Pump connects, and is successively arranged vapor collection device, anti-gas reflux apparatus on vacuum tube；
One end of the vacuum tube is connect by sealing flange with the reaction kettle being arranged on frame body, and the vacuum tube, which is equipped with, to be used
In the vacuum meter of vacuum degree in display reaction kettle, the vacuum tube is equipped with total valve；
The vapor collection device includes condenser pipe and collecting tank, and the condenser pipe is set on vacuum tube, the collecting tank
It is connected to vacuum tube；
The anti-gas reflux apparatus includes connecting tube, fixing piece, movable part, and the both ends of the connecting tube are connected to vacuum tube,
The fixing piece is fixed in connecting tube, and the fixing piece is equipped with upper gas channel and lower gas channel, the lower part
The outlet of gas passage is hinged with a baffle, and step is equipped between the upper gas channel and lower gas channel, described
The top in upper gas channel is equipped with slope, and the movable part is arranged in fixing piece and is slidably matched with fixing piece, movable part
One end matched with the step of the fixing piece and ramp shaped, and this one end of movable part be equipped with sealant, it is described solid
The rear end for determining part is protruding with for limiting the movable locating part of movable part, and the vacuum pump is equipped with exhaust pipe, the collecting tank
Bottom be equipped with drainpipe, the drainpipe be equipped with valve.
2. a kind of PBT vacuum polymerization device vacuum evacuation device according to claim 1, it is characterised in that: the fixation
Top in part is equipped with the sliding rail for movable part sliding.
3. a kind of PBT vacuum polymerization device vacuum evacuation device according to claim 1, it is characterised in that: further included
One end in vacuum tube close to total valve is arranged in strainer, the filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191560.5A CN106700054B (en) | 2016-12-21 | 2016-12-21 | PBT vacuum polymerization device vacuum evacuation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191560.5A CN106700054B (en) | 2016-12-21 | 2016-12-21 | PBT vacuum polymerization device vacuum evacuation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106700054A CN106700054A (en) | 2017-05-24 |
| CN106700054B true CN106700054B (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611191560.5A Active CN106700054B (en) | 2016-12-21 | 2016-12-21 | PBT vacuum polymerization device vacuum evacuation device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009530202A (en) * | 2006-03-22 | 2009-08-27 | ヴィトップ モールディング ソシエタ ア レスポンサビリタ リミタータ | Liquid spout, especially for high-density liquid |
| CN202220146U (en) * | 2011-09-07 | 2012-05-16 | 江阴爱科森通信材料有限公司 | Vacuum pumping system for PBT (polybutylece terephthalate) vacuum polymerization device |
| CN104350316A (en) * | 2012-05-31 | 2015-02-11 | 石崎公司 | Check valve and hot water system |
| CN204911425U (en) * | 2015-09-02 | 2015-12-30 | 山东华诚高科胶粘剂有限公司 | Protection of reation kettle vacuum and buffer |
| CN105276243A (en) * | 2015-11-20 | 2016-01-27 | 许建林 | One-way valve and full-automatic self-suction water pump |
-
2016
- 2016-12-21 CN CN201611191560.5A patent/CN106700054B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009530202A (en) * | 2006-03-22 | 2009-08-27 | ヴィトップ モールディング ソシエタ ア レスポンサビリタ リミタータ | Liquid spout, especially for high-density liquid |
| CN202220146U (en) * | 2011-09-07 | 2012-05-16 | 江阴爱科森通信材料有限公司 | Vacuum pumping system for PBT (polybutylece terephthalate) vacuum polymerization device |
| CN104350316A (en) * | 2012-05-31 | 2015-02-11 | 石崎公司 | Check valve and hot water system |
| CN204911425U (en) * | 2015-09-02 | 2015-12-30 | 山东华诚高科胶粘剂有限公司 | Protection of reation kettle vacuum and buffer |
| CN105276243A (en) * | 2015-11-20 | 2016-01-27 | 许建林 | One-way valve and full-automatic self-suction water pump |
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| Publication number | Publication date |
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| CN106700054A (en) | 2017-05-24 |
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