CN217568737U - UHMWPE polymerization kettle for solution polymerization - Google Patents
UHMWPE polymerization kettle for solution polymerization Download PDFInfo
- Publication number
- CN217568737U CN217568737U CN202221288234.7U CN202221288234U CN217568737U CN 217568737 U CN217568737 U CN 217568737U CN 202221288234 U CN202221288234 U CN 202221288234U CN 217568737 U CN217568737 U CN 217568737U
- Authority
- CN
- China
- Prior art keywords
- stirring
- uhmwpe
- premixing
- reaction
- stirring shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
The present application provides a solution polymerized UHMWPE polymerizer, comprising: the polymerization kettle body is provided with a feeding hole and a discharging hole; one end of the premixing pipeline is communicated with the polymerization kettle body, and the other end of the premixing pipeline is used for introducing a reaction solvent; the stirring part is arranged on the premixing pipeline and provided with an input part positioned outside the premixing pipeline and a stirring part extending into the premixing pipeline, the stirring part is hollow, the input part is provided with an input port for inputting ethylene, and the stirring part is provided with an output port communicated with the input port; the first driving device is used for driving the stirring piece to rotate around the axis of the first driving device; before ethylene polymerization reaction, a solvent is introduced into a premixing pipeline, ethylene enters from an input port, a stirring piece rotates around the axis of the stirring piece, the ethylene flies out from an output port under the action of centrifugal force and is uniformly dispersed into the reaction solvent, and a reaction solution flows into a reaction kettle from a feed port to react so as to obtain UHMWPE with narrow molecular weight distribution.
Description
Technical Field
The present disclosure relates generally to the field of high molecular polymerization equipment, and more particularly to a solution polymerized UHMWPE polymerization kettle.
Background
UHMWPE (ultra high molecular weight polyethylene) is an unbranched linear polyethylene having a molecular weight of 150 ten thousand or more, and has excellent properties of impact resistance, wear resistance, and low temperature resistance. Usually, ethylene is initiated and polymerized by a catalyst in a reaction kettle with the temperature of 50-60 ℃ and the pressure of 0.5-1 MPa to obtain UHMWPE. When the conventional solution polymerization kettle is used for polymerization, ethylene gas is directly introduced into the polymerization kettle, the ethylene gas is not easy to disperse and dissolve quickly, the mixing uniformity of the whole kettle is poor, and the ultrahigh molecular weight polyethylene is not easy to generate due to the fact that the ethylene gas is not uniform in the solution and the molecular weight distribution of the polymer is wide.
Disclosure of Invention
In view of the above-identified deficiencies or inadequacies of the prior art, it would be desirable to provide a solution-polymerized UHMWPE polymerization kettle comprising:
the polymerization kettle comprises a polymerization kettle body, wherein a reaction cavity is arranged in the polymerization kettle body, and the polymerization kettle body is provided with a feeding hole and a discharging hole;
a premixing cavity is arranged in the premixing pipeline, one end of the premixing pipeline is communicated with the reaction cavity through the feeding hole, and the other end of the premixing pipeline is used for introducing a reaction solvent;
the stirring piece can be rotatably arranged on the premixing pipeline along a first axis, and the first axis and the central axis of the premixing pipeline form a set included angle; the stirring piece is provided with an input part positioned outside the premixing pipeline and a stirring part extending into the premixing pipeline; the stirring part is hollow, an input port for inputting ethylene is formed in the input part, and an output port communicated with the input port is formed in the stirring part;
the first driving device is used for driving the stirring piece to rotate around the first axis.
According to the technical scheme provided by the embodiment of the application, the included angle formed by the first axis and the central axis of the premixing pipeline is 90 degrees.
According to the technical scheme provided by the embodiment of the application, the premixing pipeline is provided with a mounting hole, and the stirring piece is rotatably mounted on the mounting hole; the outer side wall of the premixing pipeline is provided with a sealed cabin corresponding to the mounting hole, the input part is arranged in the sealed cabin, and an ethylene air inlet is formed in the side wall of the sealed cabin.
According to the technical scheme provided by the embodiment of the application, the stirring piece comprises:
the first stirring shaft can be rotatably arranged at the mounting hole, and a flow guide cavity is arranged in the first stirring shaft; the first end part of the first stirring shaft extends into the sealed bin, and the second end part of the first stirring shaft extends into the premixing cavity; the side wall of the first end part is provided with the input port which is communicated with the flow guide cavity;
the stirring blade is connected with the second end part, and an output port communicated with the flow guide cavity is formed in the stirring blade.
According to the technical scheme that this application embodiment provided, be equipped with the reaction agitator on the polymeric kettle body, the reaction agitator includes:
the second stirring shaft is rotatably arranged in the reaction cavity along a second axial line, and the second axial line is vertical to the central axis of the premixing pipeline;
the stirring paddle comprises a first stirring paddle and a second stirring paddle which are fixedly sleeved on the second stirring shaft, the cross section of the first stirring paddle is parallel to the second stirring shaft, and the cross section of the second stirring paddle is perpendicular to the second stirring shaft;
and the second driving device is used for driving the second stirring shaft to rotate around the second axis.
According to the technical scheme that this application embodiment provided, second drive arrangement includes driving motor and reduction gear, driving motor's drive shaft with the input of reduction gear is connected, the output of reduction gear with the one end of second (mixing) shaft is connected.
According to the technical scheme that this application embodiment provided, the feed inlet is seted up the polymeric kettle body is close to on the lateral wall of bottom, the discharge gate is seted up the polymeric kettle body is close to on the lateral wall at top.
According to the technical scheme provided by the embodiment of the application, the side wall of the polymerization kettle body close to the bottom is provided with a catalyst inlet.
According to the technical scheme provided by the embodiment of the application, the polymerization kettle body is internally provided with a heat tracing pipe for reaction heat exchange.
In conclusion, the beneficial effects of the application are as follows:
the polymerization kettle body is provided with a feeding hole, the feeding hole is provided with a premixing pipeline communicated with a reaction cavity in the polymerization kettle body, the premixing pipeline is provided with a stirring piece capable of rotating around the axis of the premixing pipeline, the stirring piece is provided with an input part positioned outside the premixing pipeline and a stirring part extending into the premixing pipeline, the stirring piece is hollow, the input part is provided with an input port for inputting ethylene, and the stirring part is provided with an output port communicated with the input port; one end of the stirring piece, which is far away from the output port, is connected with the first driving device;
before the ethylene polymerization reaction is carried out, firstly introducing a reaction solvent into the premixing pipeline, simultaneously introducing ethylene from the input port, rotating the stirring member around the first axis, enabling the ethylene to fly out from the output port under the action of centrifugal force and be uniformly dispersed and dissolved in the reaction solvent, and then enabling the reaction solution to flow into the reaction cavity from the input port for reaction, so that the ethylene is dispersed and dissolved in the reaction solvent to form a uniform solution before entering the reaction cavity, thereby easily obtaining UHMWPE (ultra high molecular weight polyethylene) with narrow molecular weight distribution.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structure of a solution polymerized UHMWPE polymerization kettle as provided herein.
Reference numerals:
1. a polymeric kettle body; 11. a feed inlet; 12. a discharge port; 13. a catalyst inlet; 2. a premix conduit; 3. sealing the bin; 31. an air inlet; 41. a first driving device; 42. a first stirring shaft; 43. stirring blades; 421. an output port; 422. an input port; 51. a second stirring shaft; 52. a first stirring paddle; 53. a second stirring paddle; 61. a drive motor; 62. a speed reducer; 7. a heat tracing pipe.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a schematic structural diagram of a solution-polymerized UHMWPE polymerization kettle provided in this embodiment includes:
the polymerization reactor comprises a polymerization reactor body 1, wherein a reaction cavity is arranged in the polymerization reactor body 1, and the polymerization reactor body 1 is provided with a feeding hole 11 and a discharging hole 12;
a premixing cavity is arranged in the premixing pipeline 2, one end of the premixing pipeline 2 is communicated with the reaction cavity through the feeding hole 11, and the other end of the premixing pipeline 2 is used for introducing a reaction solvent;
the stirring piece can be rotatably arranged on the premixing pipe 2 along a first axis, and the first axis and the central axis of the premixing pipe 2 form a set included angle; the stirring piece is provided with an input part positioned outside the premixing pipe 2 and a stirring part extending into the premixing pipe 2; the stirring piece is hollow, an input port 422 for inputting ethylene is formed in the input part, and an output port 421 communicated with the input port 422 is formed in the stirring part;
a first driving device 41, wherein the first driving device 41 is used for driving the stirring member to rotate around the first axis.
In this embodiment, the polymeric kettle body 1 is a cylinder made of stainless steel, the polymeric kettle body 1 is fixed by a support frame, the feed inlet 11 is provided with a cylindrical feed pipeline, and the discharge outlet 12 is provided with a cylindrical discharge pipeline.
In this embodiment, one end of the premix conduit 2 and one end of the feed conduit remote from the polymerizer body 1 are sealingly connected.
In this embodiment, the output shaft of the first driving device 41 is fixedly connected with one end of the input part far from the stirring part.
The working principle is as follows: before the ethylene polymerization reaction is carried out, firstly, a reaction solvent is introduced into the premixing pipeline 2, meanwhile, ethylene enters from the input port 422, the stirring member rotates around the first axis, the ethylene flies out from the output port 421 under the action of centrifugal force and is uniformly dispersed and dissolved into the reaction solvent, and then, the reaction solution flows into the reaction cavity from the input port 11 for reaction, so that the ethylene is dispersed and dissolved into the reaction solvent to form a uniform solution before entering the reaction cavity, and therefore, the UHMWPE (ultra high molecular weight polyethylene) with narrow molecular weight distribution is easily obtained.
In a preferred embodiment, the first axis is at an angle of 90 ° to the central axis of the premix conduit 2.
In a preferred embodiment, the premix pipe 2 is provided with a mounting hole, and the stirring member is rotatably mounted on the mounting hole; the outer side wall of the premixing pipeline 2 is provided with a sealed bin 3 corresponding to the mounting hole, the input part is arranged in the sealed bin 3, and an ethylene air inlet 31 is formed in the side wall of the sealed bin 3.
Specifically, the seal bin 3 and the premixing pipeline 2 are of an integrated structure;
specifically, the air inlet 31 is connected with an air inlet pipeline.
In a preferred embodiment, the stirring member comprises:
the first stirring shaft 42 is rotatably arranged at the mounting hole, and a flow guide cavity is arranged in the first stirring shaft 42; the first end of the first stirring shaft 42 extends into the sealed cabin 3, and the second end of the first stirring shaft 42 extends into the premixing cavity; an input port 422 communicated with the flow guide cavity is arranged on the side wall of the first end part;
stirring leaf 43, stirring leaf 43 with the second tip is connected, be equipped with on the stirring leaf 43 with the delivery outlet 421 of water conservancy diversion chamber intercommunication.
Specifically, the first driving device 41 is fixed on the outer wall of the sealed cabin 3, an output shaft of the first driving device 41 extends into the sealed cabin 3, and a first end of the first stirring shaft 42 is fixedly connected with the output shaft of the first driving device 41, so that the stirring shaft rotates around the first axis under the driving of the first driving device 41;
specifically, the stirring blade 43 and the first stirring shaft 42 are of an integral structure, a first flow guide cavity is formed in the first stirring shaft 42, a second flow guide cavity is formed in the stirring blade 43 in a direction perpendicular to the first axis, and the first flow guide cavity is communicated with the second flow guide cavity;
specifically, two input ports 422 are symmetrically arranged on the side wall of the first end portion about the first axis, and the input ports 422 communicate the sealed bin 3 with the first diversion cavity; both ends of the stirring blade 43 are provided with an output port 421, and the output port 421 communicates the premixing cavity with the second diversion cavity;
specifically, ethylene enters the sealed bin 3 from the air inlet 31, then enters the first flow guide cavity through the inlet 422, and further flows into the second flow guide cavity, the stirring blade 43 is driven by the first driving device 41 to rotate around the first axis, the ethylene gas is dispersed into the reaction solvent from the outlet 421 under the action of centrifugal force, and negative pressure is generated in the first flow guide cavity, so that the ethylene gas in the sealed cavity continuously flows in from the inlet 422 and flows out from the outlet 421.
In a preferred embodiment, a reaction stirrer is disposed on the polymerization tank body 1, and the reaction stirrer comprises:
a second stirring shaft 51, wherein the second stirring shaft 51 is rotatably installed in the reaction cavity along a second axial line direction, and the second axial line is perpendicular to the central axis of the premixing pipeline 2;
the stirring paddle comprises a first stirring paddle 52 and a second stirring paddle 53 which are fixedly sleeved on the second stirring shaft 51, the section of the first stirring paddle 52 is parallel to the second stirring shaft 51, and the section of the second stirring paddle 53 is vertical to the second stirring shaft 51;
specifically, the first stirring paddle 52 makes the solution flow along the radial direction during stirring, the second stirring paddle 53 makes the solution flow along the axial direction during stirring, and the first stirring paddle 52 and the second stirring paddle 53 are matched with each other, so that the reactants are uniformly mixed and the reaction rate is increased.
And the second driving device is used for driving the second stirring shaft 51 to rotate around a second axis.
In a preferred embodiment, the second driving device comprises a driving motor 61 and a speed reducer 62, a driving shaft of the driving motor 61 is connected with an input end of the speed reducer 62, and an output end of the speed reducer 62 is connected with one end of the second stirring shaft 51.
Specifically, the second driving device is fixed at the top end of the outer wall of the polymerizer body 1, and the output end of the speed reducer 62 extends into the reaction chamber and is fixedly connected with one end of the second stirring shaft 51, so that the driving motor 61 drives the second stirring shaft 51 to rotate around the second axis.
In a preferred embodiment, the feed inlet 11 is provided on the side wall of the polymerization vessel body 1 near the bottom, and the discharge outlet 12 is provided on the side wall of the polymerization vessel body 1 near the top.
Specifically, the polymerization process is continuous polymerization, reactants enter the feed port 11 and then undergo polymerization, and products are extruded from the discharge port 12.
In a preferred embodiment, the sidewall of the polymerization kettle body 1 near the bottom is provided with a catalyst inlet 13.
In particular, the catalyst is used to initiate a polymerization reaction.
In a preferred embodiment, a heat tracing pipe 7 for reaction heat exchange is provided in the polymerizer body 1.
Specifically, in the ethylene polymerization reaction process, cooling water is continuously introduced into the heat tracing pipe 7 to cool the interior of the reaction chamber, so that the temperature is kept between 50 and 60 ℃.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. A solution polymerized UHMWPE polymerization kettle, comprising:
the device comprises a polymerization kettle body (1), wherein a reaction cavity is arranged in the polymerization kettle body (1), and the polymerization kettle body (1) is provided with a feeding hole (11) and a discharging hole (12);
a premixing cavity is arranged in the premixing pipeline (2), one end of the premixing pipeline (2) is communicated with the reaction cavity through the feeding hole, and the other end of the premixing pipeline (2) is used for introducing a reaction solvent;
the stirring piece can be rotatably arranged on the premixing pipeline (2) along a first axis, and the first axis and the central axis of the premixing pipeline (2) form a set included angle; the stirring piece is provided with an input part positioned outside the premixing pipeline (2) and a stirring part extending into the premixing pipeline (2); the stirring piece is hollow, an input port (422) for inputting ethylene is formed in the input part, and an output port (421) communicated with the input port (422) is formed in the stirring part;
a first drive means (41), said first drive means (41) for driving said stirring element in rotation about said first axis.
2. A solution polymerized UHMWPE kettle according to claim 1, wherein the angle between said first axis and the central axis of said premix conduit (2) is 90 °.
3. The solution polymerized UHMWPE polymerization kettle of claim 2, wherein the pre-mixing pipe (2) is provided with a mounting hole, and the stirring member is rotatably mounted on the mounting hole; correspond on the lateral wall of premixing pipeline (2) the mounting hole is equipped with sealed storehouse (3), the input part is arranged in sealed storehouse (3), be equipped with ethylene air inlet (31) on the lateral wall of sealed storehouse (3).
4. The solution-polymerized UHMWPE kettle according to claim 3, wherein said stirring element comprises:
the first stirring shaft (42), the first stirring shaft (42) can be rotatably arranged at the mounting hole, and a flow guide cavity is arranged in the first stirring shaft (42); the first end part of the first stirring shaft (42) extends into the sealed cabin (3), and the second end part of the first stirring shaft (42) extends into the premixing cavity; the side wall of the first end part is provided with the input port (422), and the input port (422) is communicated with the diversion cavity;
stirring leaf (43), stirring leaf (43) with the second end connection, be equipped with on stirring leaf (43) with the delivery outlet of water conservancy diversion chamber intercommunication.
5. A solution polymerized UHMWPE kettle according to claim 2 wherein said kettle body (1) is provided with a reaction stirrer, said reaction stirrer comprising:
a second stirring shaft (51), wherein the second stirring shaft (51) is rotatably arranged in the reaction cavity along a second axial line direction, and the second axial line is perpendicular to the central axis of the premixing pipeline (2);
the stirring paddle comprises a first stirring paddle (52) and a second stirring paddle (53) which are fixedly sleeved on the second stirring shaft (51), the section of the first stirring paddle (52) is parallel to the second stirring shaft (51), and the section of the second stirring paddle (53) is vertical to the second stirring shaft (51);
and the second driving device is used for driving the second stirring shaft (51) to rotate around the second axis.
6. A solution polymerized UHMWPE polymerization kettle according to claim 5, characterized in that the second driving means comprises a driving motor (61) and a speed reducer (62), the driving shaft of the driving motor being connected with the input end of the speed reducer, the output end of the speed reducer being connected with one end of the second stirring shaft (51).
7. A solution polymerized UHMWPE polymerization kettle according to claim 6, wherein said inlet (11) is opened in the side wall of the polymerization kettle body (1) near the bottom and said outlet (12) is opened in the side wall of the polymerization kettle body (1) near the top.
8. A solution polymerized UHMWPE polymerization kettle according to claim 7 wherein the polymerization kettle body (1) has a catalyst inlet (13) on the side wall near the bottom.
9. A solution polymerized UHMWPE polymerizer according to claim 8, wherein a heat tracing pipe (7) for reaction heat exchange is provided in the polymerizer body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221288234.7U CN217568737U (en) | 2022-05-27 | 2022-05-27 | UHMWPE polymerization kettle for solution polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221288234.7U CN217568737U (en) | 2022-05-27 | 2022-05-27 | UHMWPE polymerization kettle for solution polymerization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217568737U true CN217568737U (en) | 2022-10-14 |
Family
ID=83555481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221288234.7U Active CN217568737U (en) | 2022-05-27 | 2022-05-27 | UHMWPE polymerization kettle for solution polymerization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217568737U (en) |
-
2022
- 2022-05-27 CN CN202221288234.7U patent/CN217568737U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4718185B2 (en) | Taylor reactor for mass conversion | |
| CN217568737U (en) | UHMWPE polymerization kettle for solution polymerization | |
| CN114632444A (en) | Stirrer with self-absorption and gas-liquid dispersion functions | |
| CN102091572B (en) | Polymer reactor for synthesizing rubber | |
| KR102553750B1 (en) | Chemical reactor and preparation method of olefin using the same | |
| CN109603724B (en) | Chemical reaction kettle with higher stirring efficiency | |
| CN110252236A (en) | A kind of diethanol monoisopropanolamine production multiple spot mixing reactor | |
| CN104923110A (en) | Fast homogenizing equipment | |
| CN207169660U (en) | High-efficiency polymerization kettle is used in a kind of polypropylene production | |
| CN211612703U (en) | Viscous material polymerization stirred tank | |
| KR101340712B1 (en) | Mix apparatus including draft tube | |
| CN209406313U (en) | Super effect stirring online reactor | |
| CN206668612U (en) | Impeller, multiphase flow reactor and multiphase flow continuous reaction system | |
| CN111514803A (en) | Internal circulation type solid-liquid mixing system | |
| CN216458856U (en) | Reaction system | |
| CN216630835U (en) | Reaction system | |
| CN107061349A (en) | Impeller, multiphase flow reactor and multiphase flow continuous reaction system | |
| CN206325567U (en) | A kind of esterifying kettle of improved structure | |
| CN216727239U (en) | Polymeric kettle of polyolefin elastomer preparation | |
| CN211677702U (en) | High-efficiency polymerization kettle | |
| CN213766596U (en) | Emulsification forming device of polymer | |
| CN112790417B (en) | Improved full-automatic homogeneous inflation foaming machine | |
| CN213966207U (en) | Viscous material stirring and mixing device | |
| CN213791579U (en) | Liquid accelerator apparatus for producing | |
| CN218281721U (en) | HFPO polymerization reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |