CN107177017A - The system and method for volatile matter in a kind of removal high-viscosity polymer - Google Patents
The system and method for volatile matter in a kind of removal high-viscosity polymer Download PDFInfo
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- CN107177017A CN107177017A CN201610135706.8A CN201610135706A CN107177017A CN 107177017 A CN107177017 A CN 107177017A CN 201610135706 A CN201610135706 A CN 201610135706A CN 107177017 A CN107177017 A CN 107177017A
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- volatilizer
- inlet port
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/06—Treatment of polymer solutions
- C08F6/10—Removal of volatile materials, e.g. solvents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
A kind of system and method for removing volatile matter in high-viscosity polymer provided in an embodiment of the present invention, the system includes：The heat exchanger of first volatilizer, the second volatilizer and each volatilizer of correspondence, the first volatilizer includes：First disengagement chamber, the first solution inlet port, the first taphole and first gas outlet, the first volatilizer also include：Multiple first distribution holes are offered on distributor, the parting surface of distributor；Distributor is located in the first disengagement chamber, is connected with the lower end of the first solution inlet port, so that the high viscosity copolymer solution entered from the first solution inlet port is contacted with the parting surface of distributor.Due to being provided with the distributor for offering the first distribution hole simple in construction in the first volatilizer, therefore, the system that the present invention is provided is easily installed and safeguarded；The system and/or method provided using the present invention, can efficiently reduce the content of volatile matter in high-viscosity polymer, obtain the higher polymer of purity.
Description
Technical field
The present invention relates to volatile matter technical field in polymer is removed, more particularly to a kind of high viscosity that removes is gathered
The system and method for volatile matter in compound.
Background technology
It is the significant process in production processes of polyalcohol to remove the volatile matter (also referred to as devolatilization) in polymer,
Primarily discrete unreacted monomer and lower boiling solvent.
The existing method that volatile matter is removed from polybutene, can make residual monomer and solvent in polybutene
Amount is reduced to 100PPM, the patent CN1662561A, Fig. 1 of such as Basel Polyolefins Italy Co., Ltd
The system construction drawing of volatile matter is removed from polybutene disclosed in the patent, as shown in figure 1, will in polymeric segment
Monomer butylene is prepared into polybutene；The catalyst remained in solution is removed in the tank 20 that deactivates；By
Butylene is forced into supercriticality by one heat exchanger 40；And be delivered in the first volatilizer 50 by gravity
The monomer of gaseous buten -1 is separated, and is reclaimed by pipeline 4, polybutene melt falls to be waved so as to realize
Hair point so that the content of monomer of gaseous buten -1 in polybutene solution is less than 10%~6%；Then second is passed through
The heated transportation of heat exchanger 70 carries out secondary removing volatile matter, gas into the second volatilizer 80 in vacuum state
State butene-1 monomer is reclaimed by passage 7, and polybutene melt falls removes volatile matter for the second time so as to realize；Most
Afterwards, polybutene obtains high purity product by granulation underwater.
But, the scheme of the monomer of gaseous buten -1 is removed from polybutene disclosed in patent CN1662561A
In, polybutene in entering the first volatilizer 50 and the second volatilizer 80 when carrying out removing volatile matter, polymer
The viscosity of solution is very big, and especially when entering the second volatilizer 80, the viscosity of solution is very high, and this is not
Beneficial to isolating the monomer of gaseous buten -1 from polymer, fourth in the polymer exported from the second volatilizer 80
The content of the monomer of alkene -1 is 100PPM.Therefore, the disclosed gas removed in polybutene of patent CN1662561A
The effect of state butene-1 monomer is not ideal enough.
In order to further reduce the content of volatile matter in polymer, also have in the prior art in the first volatilizer 50
Or second install distributor in volatilizer 80 and remove the effect of volatile matter in polymer to improve, for example, Soviet Union
The patent CN1986619A of chemical technology Co., Ltd is given up, but the structure of distributor is too complicated, installs and ties up
Protect cost it is higher, and the distributor for highly viscous solution carry out static distribution when go volatile matter effect
It is undesirable.
The content of the invention
The purpose of the embodiment of the present invention be to provide it is a kind of remove in high-viscosity polymer the system of volatile matter and
Method, to simplify the structure of volatilizer, efficiently reduces the content of volatile matter in polymer, improves polymer
The purity of product.
To achieve these goals, volatile matter in high-viscosity polymer is removed the embodiments of the invention provide one kind
System, including：The heat exchanger of first volatilizer 50, the second volatilizer 80 and each volatilizer of correspondence, institute
Stating the first volatilizer 50 includes：First disengagement chamber 501, the first solution inlet port 502, the first taphole 503
With first gas outlet 504, second volatilizer 80 includes：Second disengagement chamber 801, the second solution inlet port
802nd, the second taphole 803 and second gas outlet 804,
First volatilizer 50 also includes：Offered on distributor 505, the parting surface of the distributor 505
Multiple first distribution holes 506；
The distributor 505 is located in first disengagement chamber 501, with first solution inlet port 502
Lower end is connected, so that the high viscosity copolymer solution entered from first solution inlet port 502 and the distribution
The parting surface contact of device 505.
It is preferred that, it is opened in distance in multiple first distribution holes 506 on the parting surface of the distributor 505
The aperture of the near distribution hole of first solution inlet port 502, it is remote less than apart from first solution inlet port 502
Distribution hole aperture.
It is preferred that, it is opened in distance in multiple first distribution holes 506 on the parting surface of the distributor 505
The density of the near distribution hole of first solution inlet port 502, it is remote more than apart from first solution inlet port 502
Distribution hole density.
It is preferred that, the parting surface of the distributor 505 is less than for circle, and the external diameter of the distributor 505
The internal diameter of first disengagement chamber 501.
It is preferred that, multiple first distribution holes 506 in the distributor 505 are set in parallel in each distribution row
In, the axis perpendicular to first solution inlet port 502 is arranged in the distribution, wherein apart from first solution
The aperture of the first distribution hole 506 in the near distribution row of import 502, less than apart from first solution inlet port
The aperture of the first distribution hole 506 in 502 remote distribution rows；Near apart from first solution inlet port 502
The density of the first distribution hole 506 in distribution row, more than the distribution remote apart from first solution inlet port 502
The density of the first distribution hole 506 in row.
It is preferred that, first volatilizer 50 also includes：Distribution screen 507；
The distribution screen 507 is located in first disengagement chamber 501, is fixed under the distributor 505
Multiple second distribution holes 508 are offered on side, the distribution screen 507.
It is preferred that, the distribution screen 507 is circle, and the external diameter of the distribution screen 507 is equal to described first point
From the internal diameter of chamber 501.
It is preferred that, second solution inlet port 802 be located at second volatilizer 80 top, and with it is right
Answer the outlet connection of the heat exchanger of second volatilizer 80.
The embodiment of the present invention additionally provides a kind of method for removing volatile matter in high-viscosity polymer, methods described
Including：
In the heat exchanger of the first volatilizer 50 of correspondence, high viscosity copolymer solution is heated, wrapped
Include the first mixture of polymer melt and supercriticality volatile matter；
First mixture is set to enter the first disengagement chamber of the first volatilizer 50 from the first solution inlet port 502
In 501, and contacted with the parting surface of the distributor 505 in the first disengagement chamber 501；Wherein, the distributor
Multiple first distribution holes 506 are offered on 505 parting surface, the distributor 505 enters with first solution
The lower end connection of mouth 502, first mixing entered from the first solution inlet port 502 in the first disengagement chamber 501
The pressure of thing is more than the pressure in the first disengagement chamber 501；
Supercriticality volatile matter in the first mixture on the parting surface of the distributor 505 is with gathering
Polymer melt carries out isolated second mixture for the first time, wherein, the supercriticality in the first mixture
Volatile matter is discharged and is recovered by first gas outlet 504；
With being heated in the corresponding heat exchanger of the second volatilizer 80 to second mixture, and make after heating
The second mixture volatile matter and the polymer melt that enter in 80 pair of second mixture of the second volatilizer carry out
Second of separation.
It is preferred that, first mixture entered from the first solution inlet port 502 in the first volatilizer 50
Temperature is between 170 DEG C~280 DEG C.
It is preferred that, it is overcritical in first mixture on the parting surface of the distributor 505
State volatile matter and polymer melt are carried out after isolated second mixture for the first time, and described with the
Before being heated in the corresponding heat exchanger of two volatilizer 80 to second mixture；Methods described also includes：
Make the second mixture and be fixed on the distribution of the lower section of distributor 505 in first disengagement chamber 501
Multiple second distribution holes 508 are offered on the upper surface of sieve 507, the distribution screen 507.
It is preferred that, second mixture made after heating enters the second volatilizer 80 and included：
The second mixture after heating is set to enter the second volatilizer 80 from the second solution inlet port 802；Wherein,
Two solution inlet ports 802 be located at second volatilizer 80 top, and with corresponding second volatilizer
The outlet connection of heat exchanger.
It is preferred that, the mixture of the second volatilizer 80 second is entered by second solution inlet port 802
Temperature between 170 DEG C~280 DEG C.
A kind of system and method for removing volatile matter in high-viscosity polymer provided in an embodiment of the present invention, it is described
System includes：The heat exchanger of first volatilizer 50, the second volatilizer 80 and each volatilizer of correspondence, described the
One volatilizer 50 includes：First disengagement chamber 501, the first solution inlet port 502, the first taphole 503 and
One gas vent 504, second volatilizer 80 includes：Second disengagement chamber 801, the second solution inlet port 802,
Second taphole 803 and second gas outlet 804, first volatilizer 50 also includes：Distributor 505,
Multiple first distribution holes 506 are offered on the parting surface of the distributor 505；The distributor 505 is located at institute
State in the first disengagement chamber 501, be connected with the lower end of first solution inlet port 502, so that molten from described first
The high viscosity copolymer solution that liquid import 502 enters is contacted with the parting surface of the distributor 505.Due to first
The distributor 505 for offering the first distribution hole 506 simple in construction, therefore, this hair are provided with volatilizer 50
The system of volatile matter, simple in construction, it is easy to install in a kind of removal high-viscosity polymer that bright embodiment is provided
And maintenance, and the content of volatile matter in polymer can be efficiently reduced；One kind provided in an embodiment of the present invention
The method for removing volatile matter in high-viscosity polymer, can efficiently reduce volatile matter in high-viscosity polymer
Content, obtains the higher polymer of purity.Certainly, any product or method for implementing the present invention must be not necessarily
Need while reaching all the above advantage.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing
The accompanying drawing used required in example or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The system architecture for removing the volatile matter in high-viscosity polymer that Fig. 1 provides for patent CN1662561A
Figure；
Fig. 2 is an a kind of sectional structure chart of first volatilizer provided in an embodiment of the present invention；
Fig. 3 is a kind of another sectional structure chart of first volatilizer provided in an embodiment of the present invention；
Fig. 4 is the sectional structure chart of another first volatilizer provided in an embodiment of the present invention；
Fig. 5 is the sectional structure chart of another first volatilizer provided in an embodiment of the present invention；
Fig. 6 is the sectional structure chart of the second volatilizer provided in an embodiment of the present invention；
Fig. 7 is a kind of flow for removing the method for volatile matter in high-viscosity polymer provided in an embodiment of the present invention
Figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
The embodiments of the invention provide a kind of system and method for removing volatile matter in high-viscosity polymer, below
Illustrate, a kind of system for removing volatile matter in high-viscosity polymer is illustrated respectively first.
With reference to Fig. 1, the embodiments of the invention provide a kind of system for removing volatile matter in high-viscosity polymer,
Including：The heat exchanger of first volatilizer 50, the second volatilizer 80 and each volatilizer of correspondence,
As shown in Fig. 2 first volatilizer 50 includes：First disengagement chamber 501, the first solution inlet port 502,
First taphole 503 and first gas outlet 504；
As shown in fig. 6, second volatilizer 80 includes：Second disengagement chamber 801, the second solution inlet port 802,
Second taphole 803 and second gas outlet 804；
In order to allow enter the first volatilizer 50 high viscosity copolymer solution in supercriticality volatile matter compared with
Separate well, as shown in Fig. 2 the first volatilizer 50 can also include：Distributor 505, the distributor 505
Parting surface on offer multiple first distribution holes 506；The distributor 505 is located at first disengagement chamber
In 501, it is connected with the lower end of first solution inlet port 502, so as to enter from first solution inlet port 502
The high viscosity copolymer solution entered is contacted with the parting surface of the distributor 505.
Specifically, the high viscosity copolymer solution into the first volatilizer 50 includes polymer melt and overcritical
State volatile matter, can be referred to as volatile matter in mixture, mixture include unreacted polymer monomer,
Solvent and catalyst etc..
Specifically, distributor 505 can be with the first solution inlet port 502 by way of welding lower end be connected.
Certain distributor 505 can also be fixed in the first disengagement chamber 501 by other means, while passing through welding
Mode is connected with the lower end of the first solution inlet port 502.It is preferred that, the solution inlet port 502 of distributor 505 and first
Lower end connection after, the parting surface of distributor 505 can be vertical with the axis of the first disengagement chamber 501.
Specifically, the parting surface of distributor 505 is that the first distribution hole 506 is offered on distributor 505, and with
The part of the high viscosity copolymer solution contact entered from the first solution inlet port 502；The shape of first distribution hole 506
Shape can be circle.The distributor 505 that the present invention is provided is simple in construction, it is easy to installs and safeguards, so that whole
The individual structure for going volatilization subsystem also becomes simple.
Specifically, into the first volatilizer 50 high viscosity copolymer solution in the parting surface with distributor 505
During contacting and stopping, the supercriticality volatile matter in high viscosity copolymer solution can be waved fully
Send out and flow up from first gas outlet 504 and discharge the first volatilizer 50, and be recovered device recovery；It is high
Polymer melt in viscosity polymer solution is landed and sunk by the first distribution hole 506 on distributor 505
Form sediment in the bottom of the first volatilizer 50, and the second volatilizer 80 of correspondence is gone to by the first taphole 503
Heat exchanger, so as to realize the purpose for removing volatile matter in high viscosity copolymer solution.
Specifically, in order to ensure the high-viscosity polymer from the first solution inlet port 502 into the first volatilizer 50
Solution has preferable mobility, and the high viscosity entered from the first solution inlet port 502 in the first volatilizer 50 is gathered
The temperature of polymer solution is preferably between 170 DEG C~280 DEG C.
Because the high viscosity copolymer solution entered from the first solution inlet port 502 is from close to the first solution inlet port
502 one end, when being flowed to one end away from the first solution inlet port 502, the temperature of high viscosity copolymer solution
It can be steadily decreasing with pressure, therefore, mobility also can gradually be deteriorated.So, if located in distributor 505
Aperture close to first distribution hole 506 of one end of the first solution inlet port 502 is too big, on the one hand, be unfavorable for height
Viscosity polymer solution flows to one end away from the first solution inlet port 502, so as to influence high-viscosity polymer
The effect of volatile matter is gone in the contact area of solution and the parting surface of distributor 505, influence；On the other hand, it can lead
The supercriticality volatile matter in the high viscosity copolymer solution being located on the position parting surface is caused to have little time point
From just droping to the bottom of the first volatilizer 50, the effect of volatile matter is gone in further influence；If located in point
The aperture of first distribution hole 506 of the one end of cloth device 505 away from the first solution inlet port 502 is too small, then is unfavorable for
The polymer melt for having removed volatile matter on the position parting surface is to the bottom of the first volatilizer 50
Sedimentation, may block the first distribution hole, so as to influence the effect of volatile matter when serious.It is therefore preferable that
, as shown in figure 3, can make to be opened in multiple first distribution holes 506 on the parting surface of distributor 505
The aperture of the distribution hole near apart from first solution inlet port 502, less than apart from first solution inlet port 502
The aperture of remote distribution hole；
Due to, preferably, positioned at distributor 505 close to one end of the first solution inlet port 502 the first distribution hole
506 aperture is smaller, therefore, and the poly- of volatile matter has been removed on the position parting surface to ensure to be located at
Effect from polymer melt to the sedimentation of the bottom of the first volatilizer 50, further, it is preferred that can also make to open up
First solution inlet port described in distance in multiple first distribution holes 506 on the parting surface of the distributor 505
The density of 502 near distribution holes, more than the density of the distribution hole remote apart from first solution inlet port 502, this
Sample, close to the aperture of the dense distribution of the position of the first solution inlet port 502, can increase high-viscosity polymer molten
The contact area of liquid and the parting surface of distributor 505, and will not reduce close to the position of the first solution inlet port 502
High viscosity copolymer solution pressure, so as to ensure that high viscosity copolymer solution smoothly reaches distributor 505
Distalmost end；In addition, the macropore of the relative sparse distribution away from the position of the first solution inlet port 502, can keep away
Exempt from high viscosity copolymer solution from one end away from the first solution inlet port 502 to close to the first solution inlet port 502
One end backflow influence distribution efficiency situation, more excellent go volatile matter effect so as to obtain.
Specifically, the arrangement mode of multiple first distribution holes 506 in distributor 505 can include following two
Kind：
Mode one, as shown in figure 3, multiple first distribution holes 506 in distributor 505 can be set in parallel in
In each distribution row, distribution row perpendicular to the axis of the first solution inlet port 502, be distributed the spacing of row with away from
The increase of the distance of first solution inlet port 502 and increase, wherein, the near distribution of distance the first solution inlet port 502
The aperture of the first distribution hole 506 in row, less than in the distribution row remote apart from first solution inlet port 502
The aperture of first distribution hole 506；The first distribution hole 506 in the near distribution row of the first solution inlet port of distance 502
Density, it is close more than the first distribution hole 506 in the distribution row remote apart from first solution inlet port 502
Degree.
Mode two, as shown in figure 4, multiple first distribution holes 506 in distributor 505 can be set in parallel in
In each distribution row, distribution row is parallel to the axis of the first solution inlet port 502, and the spacing of distribution row can phase
Etc. can not also wait, wherein, in same distribution row：The first near distribution of the first solution inlet port of distance 502
The aperture in hole 506, less than the aperture of first distribution hole 506 remote apart from first solution inlet port 502；Away from
From the density of the first near distribution hole 506 of the first solution inlet port 502, more than apart from first solution inlet port
The density of 502 the first remote distribution holes 506.
It is preferred that, the parting surface of distributor 505 can be circle.Further, it is molten from first in order to prevent
The flow for the high viscosity copolymer solution that liquid import 502 enters in the first volatilizer 50 is deposited in distribution when excessive
On the parting surface of device 505, the external diameter of distributor 505 can be less than the internal diameter of first disengagement chamber 501, with
Make more than distributor 505 parting surface separating capacity high viscosity copolymer solution, by distributor 505 with
Gap between first disengagement chamber is settled down to the bottom of the first volatilizer 50.
As shown in figure 5, in order to further enhance the effect that the first volatilizer 50 removes volatile matter, shown in Fig. 2
On the basis of, the first volatilizer 50 can also include：Distribution screen 507,
Specifically, distribution screen 507 also is located in first disengagement chamber 501, and it is fixed on the distributor 505
Lower section, at any position on high viscosity copolymer solution liquid level, offered on the distribution screen 507
Multiple second distribution holes 508.
Specifically, the second distribution hole 508 can be circular hole, preferably, can be bellmouth.
It is preferred that, distribution screen 507 can be circle, and the external diameter of distribution screen 507 is equal to the first disengagement chamber 501
Internal diameter.
Specifically, distribution screen 507 permanent by way of welding can be fixed in the first disengagement chamber 501
On wall, the inwall of the first disengagement chamber 501 can also be removably attached to by way of being hinged or bolting
On.
's high viscosity copolymer solution after distributor 505 is separated can so contacted with distribution screen 507
And stop, can be further separated out remaining in high viscosity copolymer solution during stop is overcritical
State volatile matter, so as to further effectively reduce the content of volatile matter in high viscosity copolymer solution.
Due to the viscosity of high viscosity copolymer solution obtained from the first taphole 503 of the first volatilizer 50
It is very big, when carrying out separating for second in being sent to the second volatilizer 80, it is necessary to be volatilized in correspondence second
It is heated again in the heat exchanger of device 80, to obtain preferable mobility.This requires correspondence second
The heat exchanger of volatilizer 80 has higher heating accuracy, if heating-up temperature is too high, can cause polymer
The thermal degradation of secondary response, such as polymer chain；If heating-up temperature is too low, the requirement of mobility is not reached.
And one is obtained to high viscosity copolymer solution heating even in the heat exchanger of the second volatilizer 80 of correspondence
Suitable temperature, the pipeline of heat exchanger to the second volatilizer 80 of the second volatilizer 80 of correspondence can not be too
Long, otherwise, high viscosity copolymer solution is flowing into the second volatilizer from the heat exchanger of the second volatilizer 80 of correspondence
Temperature can also be reduced during 80, and this causes the stream into the high viscosity copolymer solution of the second volatilizer 80
Dynamic property is still undesirable, the removal for the supercriticality volatile matter being unfavorable in high viscosity copolymer solution.
It is preferred, therefore, that as shown in fig. 6, another removal high viscosity provided in the embodiment of the present invention is gathered
The system of volatile matter in compound, wherein, the second solution inlet port 802 of the second volatilizer 80 is located at described second
The top of volatilizer 80, and connected with the outlet of the heat exchanger of corresponding second volatilizer 80.
Specifically, correspondence the second volatilizer 80 heat exchanger can be multi-pipe heat exchanger, the multi-pipe heat exchanger with
Second solution inlet port 802 is connected.Thus it is possible, on the one hand, can gather the high viscosity into the second volatilizer 80
Polymer solution has suitable temperature, so as to ensure that the mobility of high viscosity copolymer solution, and correspondence the
The multi-pipe heat exchanger of two volatilizers 80 can also play a part of distributor so that enter the second volatilizer 80
The supercriticality volatile matter of high viscosity copolymer solution can be separated successfully with polymer melt, be obtained good
Good goes volatile matter effect；On the other hand, the heating essence to the heat exchanger of the second volatilizer 80 of correspondence is reduced
The requirement of degree and the limitation of duct length.
Further, in order to ensure from the second solution inlet port 802 enter the second volatilizer 80 high-viscosity polymer
Solution has preferable mobility, and the high viscosity entered from the second solution inlet port 802 in the second volatilizer 80 is gathered
The temperature of polymer solution is preferably between 170 DEG C~280 DEG C.
A kind of system for removing volatile matter in high-viscosity polymer provided in an embodiment of the present invention, including：First
The heat exchanger of volatilizer 50, the second volatilizer 80 and each volatilizer of correspondence, first volatilizer 50 includes：
First disengagement chamber 501, the first solution inlet port 502, the first taphole 503 and first gas outlet 504, institute
Stating the second volatilizer 80 includes：Second disengagement chamber 801, the second solution inlet port 802, the second taphole 803
With second gas outlet 804, first volatilizer 50 also includes：Distributor 505, the distributor 505
Parting surface on offer multiple first distribution holes 506；The distributor 505 is located at first disengagement chamber
In 501, it is connected with the lower end of first solution inlet port 502, so as to enter from first solution inlet port 502
The high viscosity copolymer solution entered is contacted with the parting surface of the distributor 505.Due in the first volatilizer 50
There is provided the distributor 505 for offering the first distribution hole 506 simple in construction, therefore, the embodiment of the present invention is carried
The system of volatile matter, simple in construction in a kind of removal high-viscosity polymer supplied, it is easy to installs and safeguards, and
The content of volatile matter in high-viscosity polymer can be efficiently reduced, purity is obtained compared with high polymer finished product.
As shown in fig. 7, gathering present invention also offers one kind application removal high viscosity provided in an embodiment of the present invention
The method that the system of volatile matter removes volatile matter in polymer in compound, methods described can include following step
Suddenly：
S101, correspondence the first volatilizer 50 heat exchanger in, high viscosity copolymer solution is heated,
Acquisition includes the first mixture of polymer melt and supercriticality volatile matter；
Specifically, high viscosity copolymer solution is heated in the heat exchanger of the first volatilizer 50 of correspondence,
The temperature of the first mixture obtained is between 170 DEG C~280 DEG C.
S102, first mixture is set to enter first point of the first volatilizer 50 from the first solution inlet port 502
From in chamber 501, and contacted with the parting surface of the distributor 505 in the first disengagement chamber 501；Wherein, described point
Offer multiple first distribution holes 506 on the parting surface of cloth device 505, the distributor 505 and described first molten
The lower end connection of liquid import 502；Described first entered from the first solution inlet port 502 in the first disengagement chamber 501
The pressure of mixture is more than the pressure in the first disengagement chamber 501；
Specifically, distributor 505 can be with the first solution inlet port 502 by way of welding lower end be connected.
Certain distributor 505 can also be fixed in the first disengagement chamber by other means, while the side for passing through welding
Formula is connected with the lower end of the first solution inlet port 502.It is preferred that, the parting surface of distributor 505 can be with after connection
The axis of first disengagement chamber 501 is vertical；
Specifically, in order to ensure the high-viscosity polymer from the first solution inlet port 502 into the first volatilizer 50
Solution has preferable mobility, and the high viscosity entered from the first solution inlet port 502 in the first volatilizer 50 is gathered
The temperature of polymer solution is preferably between 170 DEG C~280 DEG C；
Specifically, the shape of distributor 505, shape, size and the first distribution hole 506 of the first distribution hole 506
Distribution situation on the parting surface of distributor 505 can be with the embodiment shown in Fig. 3 of the present invention and Fig. 4 one
Cause, here is omitted；
Specifically, the pressure of first mixture entered from the first solution inlet port 502 in the first disengagement chamber 501
Power can be that the pressure in 8~10Pa, the first disengagement chamber 501 can be 2~4Pa.
S103, the supercriticality volatilization in the first mixture on the parting surface of the distributor 505
Point isolated second mixture for the first time is carried out with polymer melt, wherein, super in the first mixture faces
Boundary's state volatile matter is discharged and is recovered by first gas outlet 504；
Specifically, the second mixture includes the supercriticality volatile matter of polymer melt and residual；
Specifically, into the first volatilizer 50 high viscosity copolymer solution in the parting surface with distributor 505
During contact, the supercriticality volatile matter in high viscosity copolymer solution be flashed and flow up from
The first volatilizer 50 is discharged in first gas outlet 504, and is recovered device recovery.
Specifically, due to first mixture entered from the first solution inlet port 502 in the first disengagement chamber 501
Pressure be more than the first disengagement chamber 501 in pressure；Therefore, enter first from the first solution inlet port 502 to separate
First mixture in chamber 501, which is almost, to be injected on the parting surface of distributor 505 so that the first mixing
Thing is contacted rapidly with the parting surface of distributor 505, so that the volatile matter in the first mixture is quickly with polymerizeing
Thing melt is separated.
It is preferred that, the supercriticality in the first mixture on the parting surface positioned at the distributor 505
Volatile matter is carried out after isolated second mixture for the first time with polymer melt, and is waved described with second
Send out before being heated in the corresponding heat exchanger of device 80 to second mixture；Methods described can also include：
Make the second mixture and be arranged on the distribution of the lower section of distributor 505 in first disengagement chamber 501
Multiple second distribution holes 508 are offered on the upper surface of sieve 507, the distribution screen 507.It is mixed second
During the upper surface of compound and distribution screen 507, it can further remove in the second mixture and remain
Supercriticality volatile matter so that from the first taphole 503 of the first volatilizer 50 obtain second mix
The content of volatile matter in compound is further reduced.
Specifically, distribution screen 507 also is located in first disengagement chamber 501, and it is fixed on the distributor 505
Lower section, at any position on high viscosity copolymer solution liquid level, offered on the distribution screen 507
Multiple second distribution holes 508.
Specifically, the shape of the second distribution hole 508 can be circle, or taper.
It is preferred that, distribution screen 507 can be circle, and the external diameter of distribution screen 507 is equal to the first disengagement chamber 501
Internal diameter.
Specifically, distribution screen 507 permanent by way of welding can be fixed in the first disengagement chamber 501
On wall, the inwall of the first disengagement chamber 501 can also be removably attached to by way of being hinged or bolting
On.
S104, with the corresponding heat exchanger of the second volatilizer 80 to second mixture heat, and make plus
Volatile matter and polymer melt that the second mixture after heat enters in 80 pair of second mixture of the second volatilizer
Second is carried out to separate.
Specifically, because the second mixture is in the pipeline along the first volatilizer 50 of connection and the second volatilizer 80
It can be cooled during flowing into the second volatilizer 80, therefore, the second volatilizer should be entered in the second mixture
Before 80, to the second mixture correspondence the second volatilizer 80 heat exchanger in heat, acquisition mobility compared with
Good the second mixture being made up of polymer melt and supercriticality volatile matter；If heating-up temperature mistake
Height, can cause the secondary response of polymer, the thermal degradation of such as polymer chain；If heating-up temperature is too low,
The requirement of mobility is not reached.It is preferred, therefore, that entering described the by second solution inlet port 802
The temperature of the mixture of two volatilizer 80 second is between 170 DEG C~280 DEG C；
In addition, obtaining one to the heating of the second mixture even in the heat exchanger of the second volatilizer 80 of correspondence
Suitable temperature, the pipeline of heat exchanger to the second volatilizer 80 of the second volatilizer 80 of correspondence can not be too
Long, otherwise, the second mixture is flowing into the mistake of the second volatilizer 80 from the heat exchanger of the second volatilizer 80 of correspondence
It can also be reduced in journey, this make it that the mobility into the second mixture of the second volatilizer 80 is still undesirable,
The removal for the supercriticality volatile matter being unfavorable in the second mixture.
It is preferred, therefore, that the second mixture after heating is entered the second volatilizer 80 includes：
The second mixture after heating is set to enter the second volatilizer 80 from the second solution inlet port 802；Wherein,
Two solution inlet ports 802 are located at the top of second volatilizer 80, the heat exchanger of correspondence second volatilizer
It is connected with second solution inlet port 802.
Specifically, correspondence the second volatilizer 80 heat exchanger can be multi-pipe heat exchanger, the multi-pipe heat exchanger with
Second solution inlet port 802 is connected.Thus it is possible, on the one hand, can not only ensure the into the second volatilizer 80
Two mixtures have suitable temperature, so that with preferable mobility, and correspond to many of the second volatilizer 80
Heat exchange of heat pipe can also play a part of distributor, so that into the second mixture of the second volatilizer 80
In supercriticality volatile matter successfully can be separated with polymer melt, obtain and good go volatile matter to imitate
Really；On the other hand, reduce to the correspondingly requirement of the heating accuracy of the heat exchanger of the second volatilizer 80 and pipeline
The limitation of length.Further, since multiple outlets of multi-pipe heat exchanger are connected in itself with the second solution inlet port 802
Distributor can just be played a part of, therefore, the second volatilizer 80 provided using the application can be saved
The expense of distributor is installed in the second volatilizer 80, production cost can be more saved.
The side using volatile matter in a kind of removal high-viscosity polymer of the invention provided is described below with reference to Fig. 1
The first volatilizer 50 that method is removed in a specific embodiment of the volatile matter in polybutene, the system is wrapped
Include：Multiple first are offered on distributor 505 and the distribution screen 507 below distributor, distributor 505
The second distribution hole 508 of multiple tapers is offered on distribution hole 506, distribution screen 507；Second in the system
Volatilizer 80 includes：Second solution inlet port 802, the second solution inlet port 802 is located at second volatilizer 80
Top, and connected with multiple outlets of the multi-pipe heat exchanger of corresponding second volatilizer 80, specifically,
It is 190 DEG C to obtain temperature in the outlet of the heat exchanger of the first volatilizer 50 of correspondence, and pressure is 9Pa bag
Include the first mixture of polybutene melt and the butene-1 of supercriticality；
First mixture enters the first of the first volatilizer 50 from the first solution inlet port 502 of the first volatilizer 50
In disengagement chamber 501；Enter fashionable, the temperature of the first mixture is 188 DEG C, and pressure is 8Pa, the first disengagement chamber
Pressure in 501 is 4Pa；After, the first mixture is fully contacted with the parting surface of distributor 505；
Under gravity, super in the first mixture on the parting surface of the distributor 505 faces
Boundary's state butene-1 carries out isolated second mixture for the first time with polymer melt；It is overcritical after separation
The gaseous buten -1 of state flows upwards through first gas outlet 504 and is recovered；Second mixture passes through
One distribution hole 506 pours down, and drop to the upper surface of distribution screen 507；On the upper surface of distribution screen 507
Residual gaseous butene-1 in second mixture is separated further, likewise, further obtained after separation
Supercriticality gaseous buten -1 flows upwards through first gas outlet 504 and is recovered, further after separation
The second mixture obtained is fallen by the second distribution hole 508 and is precipitated to the bottom of the first volatilizer 50；From
The content of butene-1 in the second mixture that first taphole 503 is obtained is 5%；
Second mixture is delivered in the multi-pipe heat exchanger of the second volatilizer 80 of correspondence and heated, when second
When mixture is heated to 205 DEG C, come down in torrents by multiple second solution inlet ports 802 into the second volatilizer 80,
The butene-1 in the second mixture is set to be separated for the second time with polybutene, finally from the of the second volatilizer 80
Two tapholes 803 obtain the polybutene melt that butene-1 content is less than 50PPM.
It can be seen that the method for removing volatile matter in high-viscosity polymer provided using the present invention, can effectively be dropped
The content of butene-1 in low finished product polybutene, it is ensured that using for polybutene product is safe.
A kind of method for removing volatile matter in high-viscosity polymer provided in an embodiment of the present invention, can make first
Parting surface of the mixture with the distributor 505 in the first disengagement chamber 501 in the first volatilizer 50 is contacted, its
In, distributor 505 is connected with the lower end of the first solution inlet port 502, is offered on the parting surface of distributor 505
Multiple first distribution holes 506, the first mixture entered from the first solution inlet port 502 in the first disengagement chamber 501
Pressure be more than the first disengagement chamber 501 in pressure；Make first on the parting surface of the distributor 505
Supercriticality volatile matter in mixture carries out isolated second mixture for the first time with polymer melt,
Wherein, the supercriticality volatile matter in the first mixture is discharged and is recovered by first gas outlet 504；
With being heated in the corresponding heat exchanger of the second volatilizer 80 to the second mixture, and second after heating is set to mix
The volatile matter that thing enters in 80 pair of second mixture of the second volatilizer is separated for the second time with polymer melt.
Due to being provided with the distributor that separating effect preferably offers the first distribution hole 506 in the first volatilizer 50
505, therefore, a kind of method for removing volatile matter in high-viscosity polymer provided in an embodiment of the present invention can
To efficiently reduce the content of volatile matter in high-viscosity polymer, the higher polymer of purity is obtained.
It should be noted that herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these
There is any this actual relation or order between entity or operation.Moreover, term " comprising ", " bag
Containing " or any other variant thereof is intended to cover non-exclusive inclusion, so that including a series of key elements
Process, method, article or equipment not only include those key elements, but also including being not expressly set out
Other key elements, or also include for this process, method, article or the intrinsic key element of equipment.
In the case of there is no more limitations, the key element limited by sentence "including a ...", it is not excluded that in bag
Also there is other identical element in the process, method, article or the equipment that include the key element.
Each embodiment in this specification is described by the way of related, identical phase between each embodiment
As part mutually referring to, what each embodiment was stressed be it is different from other embodiment it
Place.For device embodiment, because it is substantially similar to embodiment of the method, so description
Fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the protection model of the present invention
Enclose.Any modification, equivalent substitution and improvements made within the spirit and principles of the invention etc., are wrapped
Containing within the scope of the present invention.
Claims (13)
1. a kind of system for removing volatile matter in high-viscosity polymer, including：First volatilizer (50),
The heat exchanger of two volatilizers (80) and each volatilizer of correspondence, first volatilizer (50) includes：The
One disengagement chamber (501), the first solution inlet port (502), the first taphole (503) and first gas go out
Mouth (504), second volatilizer (80) includes：Second disengagement chamber (801), the second solution inlet port (802),
Second taphole (803) and second gas outlet (804), it is characterised in that：
First volatilizer (50) also includes：Distributor (505), point of the distributor (505)
From offering multiple first distribution holes (506) on face；
The distributor (505) is located in first disengagement chamber (501), with first solution inlet port
(502) lower end connection, so that the high-viscosity polymer entered from first solution inlet port (502) is molten
Liquid is contacted with the parting surface of the distributor (505).
2. system according to claim 1, it is characterised in that be opened in the distributor (505)
Parting surface on multiple first distribution holes (506) near point of the first solution inlet port (502) described in distance
The aperture of cloth hole, less than the aperture of the distribution hole remote apart from first solution inlet port (502).
3. system according to claim 2, it is characterised in that be opened in the distributor (505)
Parting surface on multiple first distribution holes (506) near point of the first solution inlet port (502) described in distance
The density of cloth hole, more than the density of the distribution hole remote apart from first solution inlet port (502).
4. system according to claim 1, it is characterised in that the separation of the distributor (505)
Face for circle, and the distributor (505) external diameter be less than first disengagement chamber (501) internal diameter.
5. system according to claim 4, it is characterised in that many in the distributor (505)
Individual first distribution hole (506) is set in parallel in each distribution row, and the distribution row is perpendicular to described first
The axis of solution inlet port (502), wherein in the distribution row near apart from first solution inlet port (502)
The aperture of first distribution hole (506), less than in the distribution row remote apart from first solution inlet port (502)
The first distribution hole (506) aperture；In the distribution row near apart from first solution inlet port (502)
The density of first distribution hole (506), more than in the distribution row remote apart from first solution inlet port (502)
The first distribution hole (506) density.
6. system according to any one of claim 1 to 5, it is characterised in that first volatilization
Device (50) also includes：Distribution screen (507)；
The distribution screen (507) is located in first disengagement chamber (501), is fixed on the distributor (505)
Lower section, offer multiple second distribution holes (508) on the distribution screen (507).
7. system according to claim 6, it is characterised in that the distribution screen (507) is circle,
The external diameter of the distribution screen (507) is equal to the internal diameter of first disengagement chamber (501).
8. system according to claim 1, it is characterised in that second solution inlet port (802)
Positioned at the top of second volatilizer (80), and with the heat exchanger of corresponding second volatilizer (80)
Outlet connection.
9. a kind of system for removing volatile matter in high-viscosity polymer based on described in claim any one of 1-8
The method for removing volatile matter in high-viscosity polymer, it is characterised in that methods described includes：
In the heat exchanger of the first volatilizer of correspondence (50), high viscosity copolymer solution is heated, obtained
The first mixture of polymer melt and supercriticality volatile matter must be included；
First mixture is set to enter the first of the first volatilizer (50) from the first solution inlet port (502)
In disengagement chamber (501), and contacted with the parting surface of the distributor (505) in the first disengagement chamber (501)；
Wherein, multiple first distribution holes (506), described point are offered on the parting surface of the distributor (505)
Cloth device (505) is connected with the lower end of first solution inlet port (502), from the first solution inlet port (502)
Pressure into first mixture in the first disengagement chamber (501) is more than in the first disengagement chamber (501)
Pressure；
Supercriticality volatile matter in the first mixture on the parting surface of the distributor (505)
Isolated second mixture for the first time is carried out with polymer melt, wherein, it is overcritical in the first mixture
State volatile matter exports (504) discharge by first gas and is recovered；
Second mixture is heated in heat exchanger corresponding with the second volatilizer (80), and makes heating
The second mixture afterwards enters the second volatilizer (80) to the volatile matter and polymer melt in the second mixture
Second is carried out to separate.
10. method according to claim 9, it is characterised in that enter from the first solution inlet port (502)
Enter the temperature of first mixture in the first volatilizer (50) between 170 DEG C~280 DEG C.
11. method according to claim 9, it is characterised in that be located at the distributor (505) described
Parting surface on the first mixture in supercriticality volatile matter and polymer melt carry out for the first time point
From obtaining after the second mixture, and it is described in heat exchanger corresponding with the second volatilizer (80) to described
Before the heating of second mixture；Methods described also includes：
Make the second mixture and be fixed in first disengagement chamber (501) below the distributor (505)
Distribution screen (507) upper surface, offer multiple second distribution holes on the distribution screen (507)
(508)。
12. the method according to any one of claim 9-11, it is characterised in that described to make after heating
The second mixture enter the second volatilizer (80) include：
The second mixture after heating is set to enter the second volatilizer (80) from the second solution inlet port (802)；Its
In, the second solution inlet port (802) be located at second volatilizer (80) top, and with it is corresponding described in
The outlet connection of the heat exchanger of second volatilizer (80).
13. method according to claim 12, it is characterised in that pass through second solution inlet port
(802) temperature of the mixture of the second volatilizer (80) second is entered between 170 DEG C~280 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135706.8A CN107177017B (en) | 2016-03-10 | 2016-03-10 | System and method for removing volatile components in high-viscosity polymer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135706.8A CN107177017B (en) | 2016-03-10 | 2016-03-10 | System and method for removing volatile components in high-viscosity polymer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456291A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Preparation process and device of polybutene-1 resin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662561A (en) * | 2002-06-24 | 2005-08-31 | 巴塞尔聚烯烃意大利有限公司 | Method for removing volatile components from polymer compositions |
| CN101213247A (en) * | 2005-05-11 | 2008-07-02 | 巴塞尔聚烯烃意大利有限责任公司 | Polymerization process for preparing polyolefin blends |
-
2016
- 2016-03-10 CN CN201610135706.8A patent/CN107177017B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662561A (en) * | 2002-06-24 | 2005-08-31 | 巴塞尔聚烯烃意大利有限公司 | Method for removing volatile components from polymer compositions |
| CN101213247A (en) * | 2005-05-11 | 2008-07-02 | 巴塞尔聚烯烃意大利有限责任公司 | Polymerization process for preparing polyolefin blends |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456291A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Preparation process and device of polybutene-1 resin |
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