CN211358762U - Polyethylene low-temperature low-pressure polymerization reaction kettle - Google Patents
Polyethylene low-temperature low-pressure polymerization reaction kettle Download PDFInfo
- Publication number
- CN211358762U CN211358762U CN201921656641.7U CN201921656641U CN211358762U CN 211358762 U CN211358762 U CN 211358762U CN 201921656641 U CN201921656641 U CN 201921656641U CN 211358762 U CN211358762 U CN 211358762U
- Authority
- CN
- China
- Prior art keywords
- stirring paddle
- kettle body
- air inlet
- cauldron
- low
- 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
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 19
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 18
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 18
- -1 Polyethylene Polymers 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The utility model discloses a polyethylene low-temperature low-pressure polymerization reaction kettle, which comprises a kettle body, an air inlet pipe and a stirring paddle, wherein the stirring paddle is positioned at the lower part in the kettle body, the central axis of the stirring paddle vertically extends upwards, and the stirring paddle rotates to generate downward turbulent flow in the kettle body; the air inlet pipe is located one end in the kettle body extends downwards to the bottom of the kettle body and below the stirring paddle along the inner wall of the kettle body. The utility model discloses simple structure overcomes the insufficient problem of polymerization in-process raw materials mixing under low temperature low pressure environment to promote reaction efficiency, reduce the reaction energy consumption, and promote polyethylene product quality.
Description
Technical Field
The utility model relates to a chemical reactor field, concretely relates to polyethylene low temperature low pressure polymerization cauldron.
Background
Polyethylene (PE) is by far the most widely used polymer material in the world. The synthesis of polyethylene can be classified into a high pressure polymerization process, a medium pressure polymerization process, and a low pressure polymerization process according to the polymerization pressure. The polyethylene reaction kettle is a main device for preparing polyethylene high molecular materials, and two or more liquids and liquids with certain volumes are uniformly mixed with solid or gas materials by a stirrer under certain pressure and temperature to promote the reaction. In a reaction kettle for preparing polyethylene by low-temperature and low-pressure polymerization, due to the difficult problem of insufficient mixing of gas-liquid, gas-solid and liquid-solid raw materials, the polymerization reaction rate is slow, the reaction efficiency is low and the reaction energy consumption is high.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a simple structure has overcome the polyethylene low temperature low pressure polymerization cauldron of the insufficient problem of raw materials mixing in the low temperature low pressure polymerization process, has promoted reaction efficiency, has reduced the reaction energy consumption to polyethylene product quality has been promoted.
The utility model provides an above-mentioned technical problem adopted technical scheme as follows:
a polyethylene low-temperature low-pressure polymerization reaction kettle comprises a kettle body, an air inlet pipe and a stirring paddle, wherein the stirring paddle is positioned at the lower part in the kettle body, the central shaft of the stirring paddle vertically extends upwards, and the stirring paddle rotates to generate downward turbulent flow in the kettle body; the air inlet pipe is located one end in the kettle body extends downwards to the bottom of the kettle body and below the stirring paddle along the inner wall of the kettle body.
The beneficial effects of the utility model are embodied in: simple structure, at internal catalyst and the solvent of putting into of cauldron, utilize ethylene gas to get into the internal bubble of cauldron from the internal bottom of cauldron through the intake pipe, the bubble upwards floats the in-process at the cauldron body and is broken by the stirring rake, and along with the rotatory decurrent turbulent flow that produces of stirring rake and the internal catalyst of cauldron and solvent intensive mixing, overcome the insufficient problem of polymerization in-process raw materials mixing under low temperature low pressure environment, thereby promote reaction efficiency, reduce the reaction energy consumption, and promote polyethylene product quality.
Further, the stirring paddle adopts a propelling stirring paddle.
The beneficial effect of adopting the further technical scheme is that: the push type stirring paddle is used for rotating and crushing ethylene bubbles, and pushing the catalyst and the solvent in the kettle body to generate turbulence downwards, so that the raw materials are fully and uniformly mixed in the kettle body.
Further, the intake pipe is responsible for and many air inlet branch by admitting air and constitutes, air inlet branch's pipe diameter is less than air inlet branch's the pipe diameter of being responsible for, air inlet branch's one end is located the cauldron is external, and the other end is located the cauldron is internal, many air inlet branch's one end is connected air inlet branch is located the internal one end of cauldron, the other end all follow cauldron internal wall downwardly extending extremely cauldron body bottom and the below of stirring rake.
The beneficial effect of adopting the further technical scheme is that: ethylene gas is responsible for the back by many inlet branch and is shunted the back and get into the internal a plurality of tiny bubbles that form of cauldron through the inlet, and tiny bubble is changeed by the stirring rake breakage, and more extensive with the internal catalyst of cauldron and solvent contact mix to more quick realization raw materials misce bene promotes reaction efficiency and product quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic diagram of the internal structure of the embodiment of the present invention;
in the attached drawing, 1-kettle body, 2-stirring paddle, 3-air inlet pipe, 301-main air inlet pipe and 302-branch air inlet pipe.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1, a polyethylene low-temperature low-pressure polymerization reaction kettle comprises a kettle body 1, an air inlet pipe 3 and a stirring paddle 2;
the stirring paddle 2 is positioned at the lower part in the kettle body 1, the central shaft of the stirring paddle 2 vertically extends upwards, and the stirring paddle 2 adopts a propelling stirring paddle which rotates to generate downward turbulent flow in the kettle body 1;
the one end that intake pipe 3 is located the cauldron body 1 is along the below of 1 inner wall downwardly extending to the cauldron body 1 bottom and stirring rake 2 of the cauldron body, intake pipe 3 is responsible for 301 and many air inlet branch pipe 302 by admitting air to one, the pipe diameter of air inlet branch pipe 302 is less than the pipe diameter of the person in charge 301 that admits air, the one end that 301 was responsible for in the air is located outside the cauldron body 1, the other end is located the cauldron body 1, the one end of many air inlet branch pipe 302 is connected and is admitted air the one end that 301 is located the cauldron body 1, the other end all follows the below of 1 inner wall downwardly extending to the cauldron body 1 bottom and stirring rake 2 of the.
The working mode is as follows: catalyst and solvent are put into the kettle body 1, ethylene gas is distributed through the plurality of air inlet branch pipes 302 after passing through the air inlet main pipe 301, and then enters the kettle body 1 from the bottom in the kettle body 1 to form a plurality of fine bubbles, the bubbles are crushed by the stirring paddle 2 in the upward floating process of the kettle body 1, downward turbulence generated along with the rotation of the stirring paddle 2 is fully mixed with the catalyst and the solvent in the kettle body 1, and the problem of insufficient mixing of raw materials in the polymerization reaction process under the low-temperature and low-pressure environment is solved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (2)
1. The utility model provides a polyethylene low temperature low pressure polymerization cauldron, includes the cauldron body (1), intake pipe (3) and stirring rake (2), its characterized in that: the stirring paddle (2) is positioned at the lower part in the kettle body (1), the central axis of the stirring paddle vertically extends upwards, and the stirring paddle (2) rotates to generate downward turbulence in the kettle body (1); one end of the air inlet pipe (3) positioned in the kettle body (1) extends downwards to the bottom of the kettle body (1) and below the stirring paddle (2) along the inner wall of the kettle body (1); intake pipe (3) are responsible for (301) and many air inlet branch pipe (302) by one admitting air and constitute, the pipe diameter of air inlet branch pipe (302) is less than the pipe diameter of the person in charge (301) admits air, the one end of the person in charge (301) of admitting air is located outside the cauldron body (1), the other end is located in the cauldron body (1), many the one end of air inlet branch pipe (302) is connected admit air and be responsible for (301) and be located one end in the cauldron body (1), the other end all follows cauldron body (1) inner wall downwardly extending reaches cauldron body (1) bottom and the below of stirring rake (2).
2. The low temperature and low pressure polyethylene polymerization reactor of claim 1, wherein: the stirring paddle (2) adopts a push type stirring paddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656641.7U CN211358762U (en) | 2019-09-30 | 2019-09-30 | Polyethylene low-temperature low-pressure polymerization reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656641.7U CN211358762U (en) | 2019-09-30 | 2019-09-30 | Polyethylene low-temperature low-pressure polymerization reaction kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211358762U true CN211358762U (en) | 2020-08-28 |
Family
ID=72162269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921656641.7U Active CN211358762U (en) | 2019-09-30 | 2019-09-30 | Polyethylene low-temperature low-pressure polymerization reaction kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211358762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538617A (en) * | 2019-09-30 | 2019-12-06 | 西安艾姆高分子材料有限公司 | Polyethylene low temperature and low pressure polymerization reactor |
-
2019
- 2019-09-30 CN CN201921656641.7U patent/CN211358762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538617A (en) * | 2019-09-30 | 2019-12-06 | 西安艾姆高分子材料有限公司 | Polyethylene low temperature and low pressure polymerization reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207970852U (en) | A kind of hydrogenation reaction kettle | |
| CN202336337U (en) | Hydrogenation reaction kettle | |
| CN105148823A (en) | Inflatable stirring reaction device | |
| CN207533222U (en) | A kind of self-priming lotion screen printing brush coating reaction kettle of stirring | |
| CN211358762U (en) | Polyethylene low-temperature low-pressure polymerization reaction kettle | |
| CN207430300U (en) | A kind of hydrogenation reaction kettle | |
| CN101817505B (en) | Dimethyl dichlorosilane hydrolysis method for directly producing gaseous hydrogen chloride | |
| CN205556651U (en) | Integration device and including being somebody's turn to do device for gas delivery and material mixing | |
| CN101805673B (en) | Airlifting biodiesel ester exchange reactor | |
| CN201823495U (en) | Gas-filling stirring device | |
| CN205761135U (en) | A kind of novel device for realizing lime nitrogen hydrolysis | |
| CN201459004U (en) | An improved polyether polymerization kettle | |
| CN203935841U (en) | A kind of efficient circulation reactor | |
| CN204159325U (en) | A kind of Novel mixer of the application in hydriding reactor | |
| CN219482685U (en) | Pre-reaction device for preparing oxalic acid by hydrolyzing dimethyl oxalate | |
| CN102765728A (en) | Precipitation reactor for producing highly dispersed silicon dioxide | |
| CN206381996U (en) | A hydrogenation reactor | |
| CN205676168U (en) | A kind of carburizing reagent system of injection reactor and nano-calcium carbonate | |
| CN206715938U (en) | A kind of new reactor for being used for folic acid synthesis | |
| CN206256132U (en) | Eddy flow bubble tower phase reactor | |
| CN208894225U (en) | A kind of converted starch reactor tank convenient for discharging | |
| CN211936925U (en) | Reaction kettle for chemical industry | |
| CN211026257U (en) | Carbonization tank with gas distribution platform | |
| CN104387258B (en) | A kind of production of chloroacetic acid method and chlorination reactor | |
| CN204385193U (en) | Anaerobic fermentation tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |