CN111978438B - Chlorinated polyvinyl chloride device - Google Patents
Chlorinated polyvinyl chloride device Download PDFInfo
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- CN111978438B CN111978438B CN201910427356.6A CN201910427356A CN111978438B CN 111978438 B CN111978438 B CN 111978438B CN 201910427356 A CN201910427356 A CN 201910427356A CN 111978438 B CN111978438 B CN 111978438B
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- polyvinyl chloride
- chlorination
- pipeline
- bin
- free radical
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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
- C08F8/00—Chemical modification by after-treatment
- C08F8/18—Introducing halogen atoms or halogen-containing groups
- C08F8/20—Halogenation
- C08F8/22—Halogenation by reaction with free halogens
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The device comprises a plasma free radical generating device, an electromagnetic control valve, a chlorination pipeline, a gap feeding and discharging port, a vacuum pump, a circulating fan and the like. Polyvinyl chloride powder firstly enters a feeding bin, the bin is connected with a vacuum pump, a feeding valve is opened after air entering the bin is extracted, and polyvinyl chloride falls into a chlorination pipeline with inclination and rolls to a discharging bin chamber; the chlorination pipeline is communicated with a circulating gas path with a plasma free radical generating device, the circulating gas path is provided with a chlorine gas introducing port, and the polyvinyl chloride forms chlorinated polyvinyl chloride after chlorination reaction. Compared with the existing water phase method, the device has the advantages of no waste liquid discharge and green and environment-friendly process.
Description
Technical Field
The invention relates to a device for chlorinating polyvinyl chloride, in particular to a device for realizing deep chlorination of polyvinyl chloride by injecting chlorine free radicals into a chlorination pipeline together with a plasma free radical generating device.
Background
At present, chlorinated polyvinyl chloride is realized by a water phase method, and the method generates a lot of waste water and brings higher treatment cost.
The corrosion resistance of the equipment required by the current ultraviolet method for chlorinated polyvinyl chloride causes the manufacturing cost of the equipment to be very high.
The plasma is directly generated in the chlorination pipeline, so that the plasma is easily formed to carbonize particles, and the chlorination consistency and quality after deep chlorination are influenced.
Disclosure of Invention
In the chlorinated polyvinyl chloride device, the plasma free radical generation area is separated from the chlorination pipeline, so that the free radicals in the plasma are injected into the chlorination pipeline to realize deep chlorination of polyvinyl chloride, and local thermal ablation of the plasma in the chlorination area is avoided.
In order to avoid exhaust gas emission, in the chlorinated polyvinyl chloride device, the gas after chlorination is recycled.
In the heating device, polyvinyl chloride powder enters a transition bin through a feeding hole, then an electromagnetic valve is closed, a vacuum pump is started to extract oxygen and water vapor components in the powder, and then the feeding valve is opened to open and close for feeding, so that the consistency of raw materials is ensured.
The chlorination pipeline in the device is obliquely arranged, so that powder falling into the chlorination pipeline can roll downwards along the inclined plane of the pipeline, and the deep chlorination of the polyvinyl chloride is realized in the rolling process.
The chlorination pipeline is communicated with a circulating fan and is connected with a chlorine pipeline, and the amount of chlorine introduced is controlled by a flowmeter.
In the device, a cooling sleeve is arranged outside the chlorination pipeline so as to control the reaction temperature of the chlorination reaction chamber.
And the chlorinated polyvinyl chloride enters a discharging bin and is discharged through an electromagnetic valve.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a chlorinated polyvinyl chloride device according to an embodiment of the present invention.
Detailed Description
A detailed description of a specific embodiment of the present invention is given with reference to fig. 1. The device is characterized by comprising a plasma free radical generating device 104, an electromagnetic control valve 102, a chlorination pipeline 105, a gap feeding bin 110, a gap discharging bin 109, a vacuum pump 111, a circulating fan 103 and the like.
A detailed description of a specific embodiment of the present invention is given with reference to fig. 1. The polyvinyl chloride powder 100 is first introduced into a feeding bin 109, which is connected to a vacuum pump 111, and after air is sucked into the bin, a valve switch 102 of a feeding bin 110 is opened, and the polyvinyl chloride powder 100 falls into a chlorination pipe 105 with a slope and rolls down along the slope in the chlorination pipe 105.
A detailed description of a specific embodiment of the present invention is given with reference to fig. 1. The chlorination line 105 is connected to a circulating gas line with a plasma radical generator 104, and the circulating gas line is provided with a chlorine gas inlet, and the amount of the introduced chlorine gas is controlled by an electromagnetic valve 108.
Referring to fig. 1, the polymerization gas is driven by a blower 103 to circulate the gas out of the chlorination line 105, and then the gas returns to the plasma radical generator through a circulation line 107 to generate radicals and gas to be filled into the chlorination line 105.
The polyvinyl chloride powder 100 is subjected to chlorination reaction to form chlorinated polyvinyl chloride powder 200.
Referring to fig. 1, water-cooled sleeves 106 are arranged outside the chlorination pipeline 105, and the materials of the chlorination pipeline 105 and the circulating pipeline 107 are made of adaptive pipe materials.
The invention has been described above with reference to specific embodiments with reference to the accompanying drawings, however, it should be noted that many changes and modifications can be made to the above-described embodiments without departing from the spirit and scope of the invention, and these changes and modifications fall within the scope of the invention defined by the claims.
Claims (7)
1. A chlorinated polyvinyl chloride device is a device for realizing deep chlorination of polyvinyl chloride powder by adopting intermittent feeding and intermittent introduction of chlorine, and comprises a plasma free radical generating device, an electromagnetic control valve, a chlorination pipeline, an intermittent feeding bin, a discharging bin, a vacuum pump and a circulating fan; the polyvinyl chloride powder firstly enters the feeding bin, the feeding bin is connected with the vacuum pump, the electromagnetic control valve is opened after air entering the feeding bin is extracted, and the polyvinyl chloride powder falls into the chlorination pipeline with inclination and rolls to the discharging bin; the chlorination pipeline is communicated with a circulating gas path with the plasma free radical generating device, the circulating gas path is provided with a chlorine gas introducing port, and polyvinyl chloride forms chlorinated polyvinyl chloride after chlorination reaction.
2. A device for chlorinating polyvinyl chloride according to claim 1, wherein: polyvinyl chloride powder enters the feeding bin through the feeding hole, then the electromagnetic control valve is closed, the vacuum pump is started to pump oxygen and water vapor in the powder, and then the electromagnetic control valve is opened to feed.
3. A device for chlorinating polyvinyl chloride according to claim 1, wherein: in the device, the plasma free radical generating device is separated from the chlorination pipeline, and the deep chlorination of the polyvinyl chloride is realized by injecting free radicals generated by the plasma free radical generating device into the chlorination pipeline.
4. A device for chlorinating polyvinyl chloride according to claim 1, wherein: the chlorination pipeline is communicated with a circulating fan and is connected with a chlorine pipeline, and the introduction amount of chlorine is controlled by a flowmeter.
5. A chlorinated polyvinyl chloride device according to claim 1, wherein: and a cooling sleeve is arranged outside the chlorination pipeline.
6. A device for chlorinating polyvinyl chloride according to claim 1, wherein: the circulating gas in the circulating gas path is driven by a circulating fan, so that the circulating gas is discharged from the chlorination pipeline, then returns to the plasma free radical generating device through the circulating gas path to generate free radicals, and the free radicals and neutral gas are poured into the chlorination pipeline together.
7. A device for chlorinating polyvinyl chloride according to claim 1, wherein: and the chlorinated polyvinyl chloride enters the discharging bin and is discharged through the electromagnetic control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910427356.6A CN111978438B (en) | 2019-05-22 | 2019-05-22 | Chlorinated polyvinyl chloride device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910427356.6A CN111978438B (en) | 2019-05-22 | 2019-05-22 | Chlorinated polyvinyl chloride device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111978438A CN111978438A (en) | 2020-11-24 |
| CN111978438B true CN111978438B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910427356.6A Active CN111978438B (en) | 2019-05-22 | 2019-05-22 | Chlorinated polyvinyl chloride device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029862A (en) * | 1975-06-25 | 1977-06-14 | The Dow Chemical Company | Olefin polymer chlorination products having improved handling properties and process for their preparation |
| CN101921350A (en) * | 2010-07-27 | 2010-12-22 | 中国科学院等离子体物理研究所 | Method for preparing chlorinated high polymer by adopting plasma modified chlorination process |
| CN102199230A (en) * | 2011-03-15 | 2011-09-28 | 清华大学 | Multilayer bed reactor and method for synthesizing chlorinated polyvinyl chloride by using low temperature plasmas |
| WO2013059109A1 (en) * | 2011-10-20 | 2013-04-25 | Lubrizol Advanced Materials, Inc. | Polyacetylene and chlorinated polyaceytlene and production processes thereof |
| CN103435723A (en) * | 2013-04-27 | 2013-12-11 | 中国科学院等离子体物理研究所 | Apparatus and method for preparing chlorinated polyethylene |
| CN103497264A (en) * | 2013-09-29 | 2014-01-08 | 中国平煤神马能源化工集团有限责任公司 | Reaction system and method for intermittent production of chlorinated polyvinyl chloride |
| CN103562230A (en) * | 2011-05-26 | 2014-02-05 | 朗盛国际股份公司 | Process and apparatus for production of halogenated butyl rubber with reduced emissions |
| CN105363390A (en) * | 2014-08-29 | 2016-03-02 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | Riser for preparing chlorinated polyvinyl chloride through circulating fluidized bed |
-
2019
- 2019-05-22 CN CN201910427356.6A patent/CN111978438B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029862A (en) * | 1975-06-25 | 1977-06-14 | The Dow Chemical Company | Olefin polymer chlorination products having improved handling properties and process for their preparation |
| CN101921350A (en) * | 2010-07-27 | 2010-12-22 | 中国科学院等离子体物理研究所 | Method for preparing chlorinated high polymer by adopting plasma modified chlorination process |
| CN102199230A (en) * | 2011-03-15 | 2011-09-28 | 清华大学 | Multilayer bed reactor and method for synthesizing chlorinated polyvinyl chloride by using low temperature plasmas |
| CN103562230A (en) * | 2011-05-26 | 2014-02-05 | 朗盛国际股份公司 | Process and apparatus for production of halogenated butyl rubber with reduced emissions |
| WO2013059109A1 (en) * | 2011-10-20 | 2013-04-25 | Lubrizol Advanced Materials, Inc. | Polyacetylene and chlorinated polyaceytlene and production processes thereof |
| CN103435723A (en) * | 2013-04-27 | 2013-12-11 | 中国科学院等离子体物理研究所 | Apparatus and method for preparing chlorinated polyethylene |
| CN103497264A (en) * | 2013-09-29 | 2014-01-08 | 中国平煤神马能源化工集团有限责任公司 | Reaction system and method for intermittent production of chlorinated polyvinyl chloride |
| CN105363390A (en) * | 2014-08-29 | 2016-03-02 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | Riser for preparing chlorinated polyvinyl chloride through circulating fluidized bed |
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| CN111978438A (en) | 2020-11-24 |
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