CN116078335A - Device and method for stably recycling monomer concentration - Google Patents
Device and method for stably recycling monomer concentration Download PDFInfo
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- CN116078335A CN116078335A CN202310375410.3A CN202310375410A CN116078335A CN 116078335 A CN116078335 A CN 116078335A CN 202310375410 A CN202310375410 A CN 202310375410A CN 116078335 A CN116078335 A CN 116078335A
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- 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
- B01J19/1862—Stationary reactors having moving elements inside placed in series
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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
- B01J19/0006—Controlling or regulating processes
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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
- B01J19/0006—Controlling or regulating processes
- B01J19/0033—Optimalisation processes, i.e. processes with adaptive control systems
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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
- B01J2219/00002—Chemical plants
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention provides a device and a method for stably recovering the concentration of a monomer, which are used for recovering the unreacted residual monomer of a previous polymerization kettle.
Description
Technical Field
The invention relates to the technical field of carbon fiber production, in particular to a device and a method for stably recycling monomer concentration.
Background
Plastics, fibers, rubber, coating materials, adhesives and the like which are commonly used in daily life are polymers which are prepared through polymerization reaction and have important performances such as plasticity, fiber formation, film formation, high elasticity and the like which are not possessed by low molecular weight monomers, and the polyacrylonitrile-based carbon fiber is widely applied in the civil field and is an indispensable engineering material in the fields such as aerospace, national defense and military industry and the like, so that the required amount of the monomers used as original reaction materials in the preparation process is high, and the monomers can be recycled for secondary use after the reaction in order to save raw materials;
in the prior art, the concentration of the residual monomer recovered in the last polymerization kettle is detected by manual sampling, the residual monomer is prepared according to the theoretical concentration required by the initiation of the polymerization reaction, the residual monomer is put into the polymerization kettle for the next polymerization reaction, and independent sampling detection and concentration preparation processes are required for the recovered monomer after each reaction.
Disclosure of Invention
In view of the foregoing drawbacks and disadvantages of the prior art, the present invention is directed to an apparatus and method for stabilizing the concentration of recovered monomer.
In a first aspect, the present invention provides an apparatus for stably recovering a monomer concentration, for recovering a residual monomer unreacted in a previous polymerizer, comprising:
the first tank body is internally provided with a first cavity;
the first conveying mechanism is communicated with the first cavity and is used for conveying the residual monomers into the first cavity;
a first conduit in communication with the first cavity, the first conduit for delivering a solvent into the first cavity;
a second conduit in communication with the first cavity, the second conduit for delivering monomer into the first cavity; the solvent and the monomer are used for adjusting the concentration of the residual monomer;
a third pipe, one end of which is communicated with the first cavity;
the second polymerization kettle is communicated with the third pipeline far away from the first tank body end, and the third pipeline is used for conveying the residual monomers with the adjusted concentration into the second polymerization kettle.
According to the technical scheme provided by the embodiment of the invention, the first conveying mechanism is provided with a condensing mechanism communicated with the first tank body close to the first tank body, and the condensing mechanism is used for condensing the residual monomers.
According to the technical scheme provided by the embodiment of the invention, the side, away from the first tank body, of the condensing mechanism is provided with the single removing mechanism communicated with the condensing mechanism, the side, away from the condensing mechanism, of the single removing mechanism is communicated with the first conveying mechanism, and the single removing mechanism is used for removing the reaction materials except the residual monomers.
According to the technical scheme provided by the embodiment of the invention, the device further comprises:
the second tank body is arranged at the side, far away from the single removing mechanism, of the condensing mechanism, a second cavity communicated with the condensing mechanism is arranged in the second tank body, and the second cavity is communicated with the first cavity at the side, far away from the condensing mechanism;
a fourth conduit in communication with the second cavity, the fourth conduit for delivering the solvent into the second cavity;
the first baffle is arranged in the second cavity, the second cavity is divided into a first space and a second space along a first direction by the first baffle, the fourth pipeline is communicated with the first space, residual monomers and the solvent are overflowed to the second space after being mixed in the first space, and the second space is communicated with the first cavity.
According to the technical scheme provided by the embodiment of the invention, the second tank body is provided with a fifth pipeline communicated with the second space, the side, away from the second space, of the fifth pipeline is communicated with the first space, the side, close to the first space, of the fifth pipeline is provided with a measuring component, and the measuring component is used for measuring the concentration of the residual monomers after the concentration range is stabilized.
According to the technical scheme provided by the embodiment of the invention, the height of the first baffle plate along the second direction is smaller than the height of the first cavity, and the second direction is perpendicular to the first direction.
According to the technical scheme provided by the embodiment of the invention, the first stirring assembly is arranged in the first cavity and is rotatably connected with the first tank body, and the direction of the rotating shaft is the second direction.
According to the technical scheme provided by the embodiment of the invention, the third pipeline is provided with a sampling component close to the second polymerization kettle side, and the sampling component is used for sampling and measuring the concentration of the residual monomer of the second pipeline close to the second polymerization kettle side; the second polymerization kettle is provided with a sixth pipeline and a seventh pipeline which are communicated with the second polymerization kettle, the sixth pipeline conveys the solvent into the second polymerization kettle, and the seventh pipeline conveys the monomer into the second polymerization kettle.
According to the technical scheme provided by the embodiment of the invention, the second stirring assembly is arranged in the second polymerization kettle, the second stirring assembly is rotatably connected with the second polymerization kettle, and the direction of the rotating shaft is the second direction.
In a second aspect the present invention provides a method for stabilizing the concentration of recovered monomer, said method being carried out using a device for stabilizing the concentration of recovered monomer as hereinbefore described, comprising the steps of:
s100, pumping the residual monomers to the first space;
s101, obtaining the concentration of the residual monomer;
s102, judging whether the concentration of the residual monomer in the second tank body is stable within a first range, if so, executing a step S104, and if not, executing steps S103-S104;
s103, opening the fourth pipeline, pumping the solvent into the first space, and obtaining a first residual monomer with stable concentration;
s104, pumping the first residual monomer into the first tank body;
s105, judging whether the first residual monomer concentration meets the reaction requirement, if so, executing a step S107, and if not, executing steps S106-S107;
s106, opening the first pipeline and/or the second pipeline, pumping the solvent and/or the monomer into the first tank body, and obtaining a first recovered monomer meeting the reaction requirement;
s107, pumping the first recovered monomer into the second polymerization kettle to perform polymerization reaction.
In summary, the present invention provides a device and a method for stably recycling monomer concentration, the device includes a first tank having a first cavity, a first conveying mechanism is in communication with the first cavity and is used for conveying the residual monomer into the first cavity, a first pipe is in communication with the first cavity and is used for conveying a solvent into the first cavity, a second pipe is in communication with the first cavity and is used for conveying the monomer into the first cavity, the solvent and the monomer are used for adjusting the concentration of the residual monomer, a third pipe is in communication with the first cavity at one end, a second polymerizer is in communication with the third pipe away from the first tank end and is used for conveying the residual monomer with adjusted concentration into the second polymerizer. The device realizes that whole process (recovery, stable concentration, input) control retrieves monomer concentration, can avoid artifical sampling and throw in the error that surplus monomer got into the polymeric kettle and bring many times, effectively stabilizes the concentration of surplus monomer that each batch polymerization produced, simplifies the recovery flow, improves the accurate control degree of retrieving monomer concentration.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for stabilizing the concentration of a recovered monomer according to an embodiment of the present invention;
FIG. 2 is a flow chart showing the steps of a method for stabilizing the concentration of recovered monomers according to an embodiment of the present invention.
The text labels in the figures are expressed as:
1. a first conveying mechanism; 2. a bill removing mechanism; 3. a condensing mechanism; 4. a measurement assembly; 5. a second tank; 6. a first baffle; 7. a fifth pipe; 8. a fourth conduit; 9. a first pipe; 10. a second pipe; 11. a first tank; 12. a first stirring assembly; 13. a return line; 14. a third conduit; 15. a second stirring assembly; 16. a second polymerization vessel; 17. a sixth conduit; 18. and a seventh pipeline.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As mentioned in the background art, in view of the problems in the prior art, the present invention provides an apparatus for stably recovering monomer concentration, for recovering the remaining monomer unreacted in the previous polymerizer, as shown in fig. 1, the apparatus comprising:
the first tank 11 is provided with a first cavity inside the first tank 11; optionally, the first tank 11 is made of stainless steel, and is shaped as an approximate ellipsoid with two flat ends and two cambered surfaces at the upper and lower ends, and the first cavity is filled with the residual monomer unreacted in the last polymerization kettle.
A first conveying mechanism 1, wherein the first conveying mechanism 1 is communicated with the first cavity and is used for conveying the residual monomers into the first cavity; optionally, the first conveying mechanism 1 comprises a gear pump, and the gear pump pumps the residual monomers in the previous polymerization kettle into the first cavity.
A first pipe 9, wherein the first pipe 9 is communicated with the first cavity, and the first pipe 9 is used for conveying solvent into the first cavity;
a second pipe 10, the second pipe 10 being in communication with the first chamber, the second pipe 10 being for delivering monomer into the first chamber; the solvent and the monomer are used for adjusting the concentration of the residual monomer; optionally, the first pipe 9 and the second pipe 10 are respectively provided with a flowmeter, and the flowmeters can convey corresponding amounts of the solvent and/or the monomer into the first cavity according to the concentration of the residual monomer, so that the concentration of the residual monomer meets the current working condition, namely the concentration requirement of the polymerization reaction, and becomes the recovered monomer.
A third pipe 14, one end of the third pipe 14 is communicated with the first cavity;
and a second polymerizer 16, wherein the second polymerizer 16 is communicated with the end, away from the first tank 11, of the third pipeline 14, and the third pipeline 14 is used for conveying the residual monomers with the adjusted concentration into the second polymerizer 16. Optionally, the third pipe 14 is used for communicating the first tank 11 with the second polymerizer 16, and the recovered monomer with a regulated concentration flows from the first tank 11 into the second polymerizer 16 through the third pipe 14 for polymerization.
The device realizes that whole process (recovery, stable concentration, input) control retrieves monomer concentration, can avoid artifical sampling and throw in the error that surplus monomer got into the polymeric kettle many times brings, effectively stabilizes each batch polymerization produces the concentration of surplus monomer, simplifies the recovery flow, improves the accurate control degree of retrieving monomer concentration.
As shown in fig. 1, further, the first conveying mechanism 1 is provided with a condensing mechanism 2 communicated with the first tank 11, and the condensing mechanism 2 is used for condensing the residual monomers. Optionally, the concentration of the recovered monomer flowing into the second polymerizer 16 is 5% -15%, the polymerization reaction often requires a high temperature, the residual monomer often exists in a gas form, and the condensation mechanism 2 is a condenser, and the residual monomer gas in the previous polymerizer can be condensed into the residual monomer liquid in a vacuum state and then flows into the first cavity.
As shown in fig. 1, further, the side of the condensation mechanism 2 away from the first tank 11 is provided with a separating mechanism 2 communicated with the condensation mechanism, the side of the separating mechanism 2 away from the condensation mechanism 2 is communicated with the first conveying mechanism 1, and the separating mechanism 2 is used for removing the reaction materials except the residual monomers. Optionally, the single removing mechanism 2 is a single removing tower, the polymerization liquid pumped by the gear pump is a polymerization liquid generated by the last reaction kettle, the polymerization liquid comprises the residual monomer and other impurities, the single removing tower is used for eliminating scabs generated by the polymerization reaction in the last reaction kettle, reducing the content of small molecules of the recovered water, removing the tiny particles of the recovered water, and reducing the probability that the small molecules adsorb the small particles to become scabs in the first cavity.
As shown in fig. 1, further, the apparatus further includes:
the second tank body 5 is arranged on the side, away from the single removing mechanism 2, of the condensing mechanism 3, a second cavity communicated with the condensing mechanism 3 is arranged in the second tank body 5, and the side, away from the condensing mechanism 3, of the second cavity is communicated with the first cavity;
a fourth conduit 8, said fourth conduit 8 being in communication with said second chamber, said fourth conduit 8 being for delivering said solvent into said second chamber;
the first baffle 6, first baffle 6 is located in the second cavity, first baffle 6 will the second cavity is divided into first space and second space along the first direction, fourth pipeline 8 with first space intercommunication, surplus monomer with the solvent is in after the first space mixes overflow extremely the second space, the second space with first cavity intercommunication. Optionally, the second tank body 5 is used for stabilizing the concentration of the residual monomer, the fourth pipeline 8 with first space intercommunication side is for the feed inlet of residual monomer, be equipped with in the second space rather than the back of the regulation concentration of intercommunication the discharge gate of residual monomer, first direction perpendicular to the lateral wall of the second tank body 5, first baffle 6 bottom with the welding of first tank body 11 bottom inner wall, both sides with the welding of the side inner wall of the second tank body 5, upwards extend to certain height back the top do not with the top of the second tank body 5, residual monomer with the solvent is in after the first space mixes, liquid volume increases gradually and overflows from the top uncoupling department to in the second space, first baffle 6 can with first solvent with residual monomer evenly mixed, first baffle 6 will first cavity divide into two parts for feed inlet and discharge gate separate, can realize from first space feeding again from the second space can be avoided the residual monomer to extrude the effect after the residual monomer is still mixed evenly with the solvent.
As shown in fig. 1, further, the second tank 5 is provided with a fifth pipe 7 communicated with the second space, the side, away from the second space, of the fifth pipe 7 is communicated with the first space, the side, close to the first space, of the fifth pipe 7 is provided with a measuring component 4, and the measuring component 4 is used for measuring the concentration of the residual monomer after the concentration range is stabilized. Optionally, the fifth pipe 7 is used for circulating the residual monomers in the first space and the second space, the measuring assembly 4 is a dual online densitometer complete equipment, the concentration of the residual monomers flowing through the fifth pipe 7 can be monitored in real time on line, the polymerization solution is pumped from the last polymerization kettle to the single removing tower by the first conveying mechanism 1 and then condensed by the condensing mechanism 2 to flow into the first space, the concentration of the residual monomers is a reaction production line from different batches, the concentration may fluctuate greatly, the solvent is conveyed in the first space to stabilize the concentration of the residual monomers, the concentration change of the residual monomers after the concentration stabilization can be monitored in real time from the second space to flow through the measuring assembly 4 and the solvent conveying amount is adjusted, when the concentration of the residual monomers is in a stable range meeting the production requirement, the stable range can be considered to be qualified, alternatively, the stable range is 3% -17%, the dual densitometer can ensure that one densitometer works abnormally, the other densitometer works abnormally, and the reaction efficiency is not normally scheduled.
As shown in fig. 1, further, the height of the first baffle 6 in the second direction is smaller than the height of the first cavity, and the second direction is perpendicular to the first direction. Optionally, the second direction is perpendicular to the ground, the height of the first baffle 6 is k×the height of the second cavity, where K is a first ratio coefficient, k=50%, so as to ensure that the liquid level line of the residual monomer in the second cavity is kept at 50% -60% of the height of the second cavity, the first space and the second space have a communication space at the top, and the residual monomer higher than the liquid level line overflows from the first space to the second space through the communication space.
As shown in fig. 1, further, a first stirring assembly 12 is disposed in the first cavity, the first stirring assembly 12 is rotatably connected with the first tank 11, and the direction of the rotation axis is the second direction. Optionally, the first stirring assembly 12 is a paddle stirrer, and the paddle stirrer is used for uniformly stirring the residual monomer with stable concentration flowing from the second cavity, the solvent conveyed by the first pipeline 9 and the monomer conveyed by the second pipeline 10 to form the recovered monomer with uniform concentration.
As shown in fig. 1, further, the third pipe 14 is provided with a sampling assembly near the second polymerizer 16, and the sampling assembly is used for sampling and measuring the concentration of the residual monomer near the second polymerizer 16 of the second pipe 10; the second polymerizer 16 is provided with a sixth pipe 17 and a seventh pipe 18 communicating therewith, the sixth pipe 17 feeding the solvent into the second polymerizer 16, and the seventh pipe 18 feeding the monomer into the second polymerizer 16. Optionally, a sampling assembly is disposed inside the third pipe 14 near the feed inlet side of the second polymerizer 16, the sampling assembly includes a sampler and an on-line densitometer, and the sampling assembly may perform final concentration measurement before the recovered monomer enters the polymerizer, if the concentration is not within a specified concentration range required by production, the sixth pipe 17 and the seventh pipe 18 are opened to continuously adjust the concentration of the recovered monomer, so that the concentration of the recovered monomer finally in the second polymerizer 16 is within the concentration range required by production, and then other reaction materials are thrown into the second polymerizer 16, and the second stirring assembly 15 is kept to stir in a rotating manner.
As shown in fig. 1, further, a second stirring assembly 15 is disposed in the second polymerization kettle 16, the second stirring assembly 15 is rotatably connected with the second polymerization kettle 16, and the direction of the rotation axis is the second direction. Optionally, the second stirring assembly 15 is a spiral skirt stirrer, the rotating shaft is arranged at the center position of the inner top of the cavity of the second polymerization kettle 16, the top end of the rotating shaft is rotatably connected with the second polymerization kettle 16, the bottom end of the rotating shaft is connected with a stirring rod, a spiral skirt type blade is arranged on the stirring rod, the second stirring assembly 15 is started 2-3 hours before polymerization feeding, the spiral skirt stirrer can uniformly mix all the reaction materials and fully react, the spiral skirt type blade is closer to the side surface of the inner cavity of the second polymerization kettle 16 along the first direction, and in the rotating process of the rotating shaft, the spiral skirt type blade can play a role in scraping a wall when rotating, so that the material is prevented from being stuck to the kettle and the reaction effect is affected.
The third pipeline 14 has a first bifurcation point, one liquid after bifurcation flows through the reflux pipeline 13 to circulate in the first tank 11, and the other liquid flows from the first tank 11 to the second polymerizer 16; the fifth pipeline 7 is provided with a second bifurcation point, one bifurcated liquid flows into the first cavity through the second space, the other liquid is divided into two paths through a third bifurcation point, one path flows into the first space after flowing through the measuring assembly 4, and the other path flows into the condensing mechanism 2 for condensation circulation; the circulating loop can effectively mix the concentration of the residual monomer so that the residual monomer finally becomes the recovered monomer with uniform concentration; at least one flowmeter is arranged in each pipeline, the flowmeter can monitor and regulate the liquid quantity conveyed by each pipeline, the pipelines are opened to operate through the flowmeters in the pipelines, the liquid conveying quantity in each pipeline can be regulated at any time according to the liquid extraction quantity and the change condition of material components, and the concentration of the recovered monomer is continuously ensured to be stable in a certain range.
Example 2
On the basis of the embodiment 1, the invention provides a method for stabilizing the concentration of recovered monomers, as shown in fig. 2, which comprises the following steps:
s100, pumping the residual monomers to the first space; optionally, pumping the residual monomer from the last polymerization kettle into the first space by using the gear pump, mixing the residual monomer with the solvent in the first space, stabilizing the concentration of the residual monomer, and overflowing the residual monomer into the second space;
s101, obtaining the concentration of the residual monomer; optionally, the residual monomer with stable concentration in the second space is circularly conveyed, and the concentration of the residual monomer is monitored in real time;
s102, judging whether the concentration of the residual monomer in the second tank body 5 is stable within a first range, if so, executing a step S104, and if not, executing steps S103-S104; optionally, only the first concentration stabilization adjustment is performed in the second tank body 5, so that the second tank body is stabilized in the first range, the subsequent concentration adjustment is facilitated, and the adjustment difficulty is reduced;
s103, opening the fourth pipeline 8, pumping the solvent into the first space, and obtaining a first residual monomer with stable concentration; optionally, the concentration of the residual monomer unreacted in the previous polymerization kettle is higher than that in the first range, the solvent is mixed into the residual monomer to adjust the concentration, the fluctuation condition of the measurement assembly 4 is monitored in real time in the process of pumping the solvent, and the first residual monomer can be obtained when the measurement assembly 4 tends to be stable;
s104, pumping the first residual monomers into the first tank 11;
s105, judging whether the first residual monomer concentration meets the reaction requirement, if so, executing a step S107, and if not, executing steps S106-S107;
s106, opening the first pipeline 9 and/or the second pipeline 10, pumping the solvent and/or the monomer into the first tank 11, and obtaining a first recovered monomer meeting the reaction requirement; optionally, after the first residual monomer with stable concentration range is obtained in the second tank body 5, conveying a corresponding amount of the solvent and/or the monomer through numerical calculation so as to prepare the first residual monomer, thereby obtaining the first recovered monomer meeting the reaction requirement;
s107, pumping the first recovered monomer into the second polymerization kettle 16 for polymerization reaction. Optionally, before the first recovered monomer enters the second polymerizer 16 for reaction, the sampler is used to sample the first recovered monomer to determine the concentration thereof, so as to prove the numerical accuracy of the determining component 4, so as to conveniently retain the reaction data of the first recovered monomer, if the concentration obtained by sampling meets the production requirement, the polymerization reaction can be directly carried out, and if the concentration obtained by sampling does not meet the production requirement, the sixth pipeline 17 and/or the seventh pipeline 18 need to be opened for final blending again, but the situation rarely occurs during the reaction.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.
Claims (10)
1. A device for stably recovering the concentration of a monomer for recovering the residual monomer unreacted in a previous polymerization vessel, comprising:
the first tank body (11) is internally provided with a first cavity;
a first conveying mechanism (1), wherein the first conveying mechanism (1) is communicated with the first cavity and is used for conveying the residual monomers into the first cavity;
-a first conduit (9), said first conduit (9) being in communication with said first cavity, said first conduit (9) being for delivering a solvent into said first cavity;
-a second duct (10), said second duct (10) being in communication with said first cavity, said second duct (10) being for conveying monomers into said first cavity; the solvent and the monomer are used for adjusting the concentration of the residual monomer;
a third conduit (14), one end of the third conduit (14) being in communication with the first cavity;
the second polymerization kettle (16), second polymerization kettle (16) with third pipeline (14) keep away from first jar body (11) end intercommunication, third pipeline (14) are used for to in second polymerization kettle (16) transmission adjust concentration after remaining monomer.
2. The device for stabilizing and recycling monomer concentration according to claim 1, characterized in that the first conveying mechanism (1) is provided with a condensing mechanism (3) communicated with the first tank body (11) near the side, and the condensing mechanism (3) is used for condensing the residual monomer.
3. The device for stably recycling monomer concentration according to claim 2, wherein a de-single mechanism (2) communicated with the condensation mechanism (3) is arranged on the side far away from the first tank body (11), the de-single mechanism (2) is communicated with the first conveying mechanism (1) on the side far away from the condensation mechanism (3), and the de-single mechanism (2) is used for removing reaction materials except the residual monomers.
4. A device for stabilizing the concentration of a recovered monomer according to claim 3, further comprising:
the second tank body (5) is arranged on the side, far away from the single removing mechanism (2), of the condensing mechanism (3), a second cavity communicated with the condensing mechanism (3) is arranged in the second tank body (5), and the side, far away from the condensing mechanism (3), of the second cavity is communicated with the first cavity;
-a fourth conduit (8), said fourth conduit (8) being in communication with said second cavity, said fourth conduit (8) being for delivering said solvent into said second cavity;
the first baffle (6), first baffle (6) are located in the second cavity, first baffle (6) will the second cavity is divided into first space and second space along the first direction, fourth pipeline (8) with first space intercommunication, surplus monomer with the solvent is in after the first space mixes overflow extremely the second space, the second space with first cavity intercommunication.
5. The device for stably recovering the monomer concentration according to claim 4, wherein the second tank (5) is provided with a fifth pipeline (7) communicated with the second space, the side of the fifth pipeline (7) away from the second space is communicated with the first space, the side of the fifth pipeline (7) close to the first space is provided with a measuring component (4), and the measuring component (4) is used for measuring the concentration of the residual monomer after a stable concentration range.
6. The apparatus for stabilizing the concentration of the recovered monomer according to claim 5, wherein the height of the first baffle (6) in the second direction is smaller than the height of the first chamber, and the second direction is perpendicular to the first direction.
7. The device for stabilizing and recycling monomer concentration according to claim 6, wherein a first stirring assembly (12) is arranged in the first cavity, the first stirring assembly (12) is rotatably connected with the first tank (11), and the direction of the rotating shaft is the second direction.
8. The device for stabilizing the concentration of the recovered monomers according to claim 7, wherein a sampling assembly is arranged on the side of the third pipeline (14) close to the second polymerization kettle (16), and is used for sampling and measuring the concentration of the residual monomers on the side of the second pipeline (10) close to the second polymerization kettle (16); the second polymerizer (16) is provided with a sixth pipeline (17) and a seventh pipeline (18) which are communicated with the second polymerizer, the sixth pipeline (17) conveys the solvent into the second polymerizer (16), and the seventh pipeline (18) conveys the monomer into the second polymerizer (16).
9. The device for stabilizing and recycling monomer concentration according to claim 8, wherein a second stirring assembly (15) is arranged in the second polymerization kettle (16), the second stirring assembly (15) is rotatably connected with the second polymerization kettle (16), and the direction of the rotating shaft is the second direction.
10. A method for stabilizing the concentration of a recovered monomer by using the apparatus for stabilizing the concentration of a recovered monomer according to claim 9, comprising the steps of:
s100, pumping the residual monomers to the first space;
s101, obtaining the concentration of the residual monomer;
s102, judging whether the concentration of the residual monomer in the second tank body (5) is stable within a first range, if so, executing a step S104, and if not, executing the steps S103-S104;
s103, opening the fourth pipeline (8), pumping the solvent into the first space, and obtaining a first residual monomer with stable concentration;
s104, pumping the first residual monomer into the first tank body (11);
s105, judging whether the first residual monomer concentration meets the reaction requirement, if so, executing a step S107, and if not, executing steps S106-S107;
s106, opening the first pipeline (9) and/or the second pipeline (10), and pumping the solvent and/or the monomer into the first tank (11) to obtain a first recovered monomer meeting the reaction requirement;
s107, pumping the first recovered monomer into the second polymerization kettle (16) to perform polymerization reaction.
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| CN202310375410.3A CN116078335B (en) | 2023-04-11 | 2023-04-11 | Device and method for stably recycling monomer concentration |
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| CN202310375410.3A CN116078335B (en) | 2023-04-11 | 2023-04-11 | Device and method for stably recycling monomer concentration |
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| CN116078335B CN116078335B (en) | 2023-07-21 |
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| CN202310375410.3A Active CN116078335B (en) | 2023-04-11 | 2023-04-11 | Device and method for stably recycling monomer concentration |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5077381A (en) * | 1990-06-01 | 1991-12-31 | Basf Corporation | Constant compositioin recycle of nylon 6 polymerization wash water |
| US5730937A (en) * | 1986-06-05 | 1998-03-24 | Pardikes; Dennis G. | Module for automatically controlling a polymer processing system |
| CN1448412A (en) * | 2002-04-04 | 2003-10-15 | 三菱丽阳株式会社 | Method and apparatus for continuous polymerization of polymer |
| CN104151487A (en) * | 2014-07-10 | 2014-11-19 | 中国化学赛鼎宁波工程有限公司 | Water-phase suspension production system and method for acrylonitrile polymer for PNA carbon fiber precursor |
| CN208748210U (en) * | 2018-09-12 | 2019-04-16 | 内蒙古兰太实业股份有限公司 | Sodium chlorate electrolysis production system |
| CN208949256U (en) * | 2018-09-08 | 2019-06-07 | 深圳市夏日环保工程有限公司 | Integrated form anaerobic reaction device with the reaction of batch-type pre fermentation |
| CN114100543A (en) * | 2021-12-07 | 2022-03-01 | 万华化学(四川)有限公司 | Vinyl polymer and continuous bulk polymerization method and reaction device thereof |
-
2023
- 2023-04-11 CN CN202310375410.3A patent/CN116078335B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5730937A (en) * | 1986-06-05 | 1998-03-24 | Pardikes; Dennis G. | Module for automatically controlling a polymer processing system |
| US5077381A (en) * | 1990-06-01 | 1991-12-31 | Basf Corporation | Constant compositioin recycle of nylon 6 polymerization wash water |
| CN1448412A (en) * | 2002-04-04 | 2003-10-15 | 三菱丽阳株式会社 | Method and apparatus for continuous polymerization of polymer |
| CN104151487A (en) * | 2014-07-10 | 2014-11-19 | 中国化学赛鼎宁波工程有限公司 | Water-phase suspension production system and method for acrylonitrile polymer for PNA carbon fiber precursor |
| CN208949256U (en) * | 2018-09-08 | 2019-06-07 | 深圳市夏日环保工程有限公司 | Integrated form anaerobic reaction device with the reaction of batch-type pre fermentation |
| CN208748210U (en) * | 2018-09-12 | 2019-04-16 | 内蒙古兰太实业股份有限公司 | Sodium chlorate electrolysis production system |
| CN114100543A (en) * | 2021-12-07 | 2022-03-01 | 万华化学(四川)有限公司 | Vinyl polymer and continuous bulk polymerization method and reaction device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 米舍尔等: "细胞免疫学方法选编", 人民卫生出版社, pages: 207 * |
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