CN113136000A - Polyvinyl chloride paste resin micro-suspension polymerization method - Google Patents
Polyvinyl chloride paste resin micro-suspension polymerization method Download PDFInfo
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- CN113136000A CN113136000A CN202110279507.5A CN202110279507A CN113136000A CN 113136000 A CN113136000 A CN 113136000A CN 202110279507 A CN202110279507 A CN 202110279507A CN 113136000 A CN113136000 A CN 113136000A
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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
- C08F114/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F114/02—Monomers containing chlorine
- C08F114/04—Monomers containing two carbon atoms
- C08F114/06—Vinyl chloride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/02—Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
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Abstract
The invention provides a polyvinyl chloride paste resin micro-suspension polymerization method, wherein equipment used in the polymerization process comprises a polymerization kettle, a dispersion tank, a toluene storage tank, an initiator 1 configuration tank, an initiator 1 program tank, an emulsifier program tank, an deionized water storage tank, a monomer storage tank and a post-mixing agent program tank; the input end of the polymerization kettle is communicated with the output end of the dispersion tank, the input end of the dispersion tank is respectively communicated with an initiator 1 program groove, an initiator 2 program groove, an emulsifier program groove, a deionized water storage tank and a monomer storage tank, and the post-mixing program groove is communicated with the polymerization kettle; the initiator 1 program tank is communicated with the initiator 1 configuration tank, and the initiator 1 configuration tank is communicated with the toluene storage tank. In the invention, the addition of the preparation, the washing of the polymerization kettle and the recovery of the monomer are all automatically completed, the automation degree of the whole process is high, the production efficiency is high, and the method has great advantages in the aspects of energy consumption, monomer residual quantity, yield and the like.
Description
Technical Field
The invention belongs to the technical field of polyvinyl chloride production, and particularly relates to a polyvinyl chloride paste resin micro-suspension polymerization method.
Background
The polyvinyl chloride paste resin has the advantages of convenient preparation, stable performance, easy control, convenient use, excellent product performance, good chemical stability and the like, so the polyvinyl chloride paste resin is widely applied to the production of artificial leather, vinyl toys, soft trademarks, wallpaper, paint coatings, foamed plastics and the like. The production process of domestic polyvinyl chloride paste resin includes microsuspension method, its technological process includes polymerization process, recovery process, drying process and grinding process, in which in the polymerization process various preparations are required to be prepared, including initiator 1, initiator 2, emulsifier and after-mixing agent, initiator 1, initiator 2 and emulsifier and vinyl chloride monomer are added into dispersion tank together to form stable dispersion liquor, the dispersion liquor is circularly added into polymerization still at the same time, the after-mixing agent is directly added into polymerization still, the polymerization reaction is implemented in the polymerization still, after the reaction is completed, the latex is discharged into blowing-off tank, then the polymerization still after discharging material firstly implements self-pressure vinyl chloride monomer recovery and forced vinyl chloride monomer recovery, after the completion of after-polymerization still opening manhole, high-pressure water cleaning is implemented, the interior of blowing-off tank is continuously implemented with vinyl chloride monomer recovery, after the recovery, the latex in the blowing-off tank is fed into drying process to implement drying, and grinding the dried paste resin, and packaging and warehousing.
The above process has the following problems: 1. the initiator 1, the initiator 2, the emulsifier and the post-mixing agent need to be manually prepared in each kettle, so that the production efficiency is reduced, the problem of large preparation error is easy to occur, the quality of polymerization reaction is not facilitated, and the yield is influenced. 2. Toluene in the initiator needs to be weighed manually in each kettle, and after a human body contacts and sucks the toluene, the toluene is harmful to human health and pollutes the environment. 3. All need carry out the interior washing of artifical cauldron after the polyreaction at every turn, working strength is big, and the cleaning performance is poor, and the volatile substances in the polymerizer can harm health, and the cleaning efficiency is low moreover, still can produce a large amount of sewage. 4. In the monomer recovery of the polymerization kettle and the blowing groove, the recovery time is long, the steam energy consumption is high, the content of the vinyl chloride monomer in the latex entering the drying process is 500-2500ppm, the risks of environmental pollution and health hazard in the drying process are increased, and the excessive consumption of the vinyl chloride monomer is also caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a polyvinyl chloride paste resin micro-suspension polymerization method which has high automation degree and low vinyl chloride monomer content in latex and reduces environmental hazard and human health hazard.
The technical scheme adopted by the invention is as follows:
a polyvinyl chloride paste resin micro-suspension polymerization method comprises a polymerization process, a recovery process and a drying process, and is characterized in that: the equipment used in the polymerization process comprises a polymerization kettle, a dispersion tank, a toluene storage tank, an initiator 1 configuration tank, an initiator 1 program tank, an emulsifier program tank, an deionized water storage tank, a monomer storage tank and a post-mixing program tank;
the input end of the polymerization kettle is communicated with the output end of the dispersion tank, the input end of the dispersion tank is respectively communicated with an initiator 1 program groove, an initiator 2 program groove, an emulsifier program groove, a deionized water storage tank and a monomer storage tank, and the post-mixing program groove is communicated with the polymerization kettle; the initiator 1 program tank is communicated with the initiator 1 configuration tank, and the initiator 1 configuration tank is communicated with the toluene storage tank;
the output end of the polymerization kettle is communicated with the input end of a latex recovery and concentration device in the recovery process, and the latex discharged by the recovery and concentration device enters the drying process for treatment.
And moreover, after the polymerization process is finished, a washing process is carried out, and washing water after the washing process is finished is conveyed to the input end of the recovery and concentration device.
Furthermore, the rinsing process comprises the steps of:
setting a polymerization reaction limit value, and automatically counting each polymerization process;
when the count is smaller than a limited value, after each polymerization reaction is finished, the cleaning device automatically cleans the interior of the polymerization kettle, and the cleaning water is conveyed from the polymerization kettle to the recovery and concentration device for vinyl chloride monomer recovery;
when the count is equal to a limited numerical value, the cleaning device automatically cleans the interior of the polymerization kettle, and the cleaning water is conveyed from the polymerization kettle to the recovery and concentration device for vinyl chloride monomer recovery; carrying out self-pressure recovery and forced recovery in the polymerization kettle; and opening the manhole and checking the polymerization kettle.
And the input end of the post-mixing program tank is communicated with a post-mixing storage tank, and the post-mixing storage tank is arranged in the constant-temperature melting chamber.
And a liquid level meter, a thermometer and a stirrer are arranged in the program tank, a flow meter is arranged at the output end of the program tank, and a heating jacket is arranged outside the program tank or a heater is arranged inside the program tank.
And the latex recovery and concentration device comprises a heating sleeve, a recovery tower and a blowing groove, the heating sleeve is arranged on the outer sleeve of the recovery tower, a spray head arranged in the recovery tower is communicated with one end of the blowing groove, a plurality of layers of tower trays with overflow weirs are arranged in the recovery tower, the output end of the bottom of the recovery tower is communicated with the other end of the blowing groove, the third end of the blowing groove is communicated with the polymerization kettle, and a liquid level meter and a thermometer are arranged in the recovery tower.
And the latex recovery and concentration device comprises a heating sleeve, a recovery tower and a blowing groove, the heating sleeve is arranged on the outer sleeve of the recovery tower, a spray head arranged in the recovery tower is communicated with one end of the blowing groove, a plurality of layers of tower trays with overflow weirs are arranged in the recovery tower, the output end of the bottom of the recovery tower is communicated with the other end of the blowing groove, the third end of the blowing groove is communicated with the polymerization kettle, and a liquid level meter and a thermometer are arranged in the recovery tower.
And the shell of the polymerization kettle is provided with at least one two-position pneumatic valve, one side of the two-position pneumatic valve is communicated with the inside of the polymerization kettle, the other side of the two-position pneumatic valve is communicated with the sealing sleeve, the sealing sleeve is internally provided with a cleaning head, and the cleaning head can extend into the polymerization kettle when the two-position pneumatic valve is opened.
And the shell of the polymerization kettle is provided with at least one two-position pneumatic valve, one side of the two-position pneumatic valve is communicated with the inside of the polymerization kettle, the other side of the two-position pneumatic valve is communicated with the sealing sleeve, the sealing sleeve is internally provided with a cleaning head, and the cleaning head can extend into the polymerization kettle when the two-position pneumatic valve is opened.
The invention has the advantages and positive effects that:
1. in the method, a plurality of preparations are prepared in batches in advance and are added into a polymerization kettle through a program tank and a pump when in use, so that the intensity of manual operation is reduced, the accuracy of preparation is improved, frequent contact between personnel and hazardous reagents is avoided, and the risks of environmental pollution and human hazard are reduced.
2. In the method, at least one three-dimensional cleaning device is arranged on a polymerization kettle, a telescopic cleaning head on the device can extend into the polymerization kettle from a two-position pneumatic valve arranged on a polymerization kettle shell, high-pressure hot deionized water sprayed by the cleaning head can fully clean the interior of the polymerization kettle, the washed sewage enters a recovery tower, vinyl chloride monomer is recovered through a recovery pipeline, latex returns to a blowing tank for vinyl chloride monomer recovery again, and the problems of low efficiency and high risk in manual washing in the prior art are solved.
3. In the method, the washed latex and the latex in the blowing groove are treated in the recovery tower, the vinyl chloride monomer is recovered by the recovery pipeline, the latex returns to the blowing groove to recover the vinyl chloride monomer again, and then enters the drying process, the vinyl chloride monomer in the latex is greatly reduced, the environmental safety and the human health safety in the drying process are ensured, and the excessive consumption of the vinyl chloride monomer is also avoided.
4. In the invention, the addition of the preparation, the washing of the polymerization kettle and the recovery of the monomer are all automatically completed, the automation degree of the whole process is high, the production efficiency is high, and the method has great advantages in the aspects of energy consumption, monomer residual quantity, yield and the like.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention;
FIG. 2 is a schematic diagram of a program slot;
FIG. 3 is a schematic view of a melting chamber;
FIG. 4 is a schematic diagram of a latex recovery and concentration apparatus;
FIG. 5 is a schematic diagram of a recovery column;
FIG. 6 is a schematic view of a three-dimensional cleaning apparatus;
fig. 7 is a schematic view of another cleaning configuration.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The invention discloses a polyvinyl chloride paste resin micro-suspension polymerization method, which comprises a polymerization process, a recovery process and a drying process as shown in figures 1-6, and is characterized in that: the equipment used in the polymerization process comprises a polymerization kettle, a dispersion tank, a toluene storage tank, an initiator 1 configuration tank, an initiator 1 program tank, an emulsifier program tank, a deionized water storage tank, a monomer storage tank and a post-mixing agent program tank shown in figure 1, wherein the input end of the polymerization kettle is communicated with the output end of the dispersion tank, the input end of the dispersion tank is respectively communicated with the initiator 1 program tank, the initiator 2 program tank, the emulsifier program tank, the deionized water storage tank and the monomer storage tank (not shown in figure 1) through a pump 1, and the post-mixing agent program tank is communicated with the polymerization kettle; the initiator 1 program tank is communicated with the initiator 1 configuration tank, and the initiator 1 configuration tank is communicated with the toluene storage tank through a pump.
The output end of the polymerization kettle is communicated with the input end of a latex recovery and concentration device in the recovery process, and the latex discharged by the recovery and concentration device enters the drying process for treatment.
The input end of the rear mixing program groove is communicated with the rear mixing storage tank through a pump, and the rear mixing storage tank and the barreled rear mixing raw materials are both arranged in the constant-temperature melting chamber.
The melting chamber is a constant-temperature house as shown in fig. 3, heating is performed through circulation of steam, automatic adjustment of the opening degree of a steam pipeline is achieved through feedback data of a thermometer, and the constant temperature in the melting chamber is guaranteed to be 60 +/-5 ℃, so that the post-mixing agent in the post-mixing agent storage tank and the post-mixing agent in the post-mixing agent barrel in the melting chamber is kept in a liquid state.
As shown in FIG. 2, each program tank is internally provided with a liquid level meter, a thermometer and a stirrer 4 at 5, the output end of the program tank is provided with a flow meter, the program tank is externally provided with a heating jacket or internally provided with a heater, the upper end of the program tank is provided with an input end 3, and the lower end of the program tank is provided with an output end. The program tank is automatically controlled by a control system, and forms feedback signals according to sensors such as a flowmeter, a liquid level meter, a thermometer and the like to automatically adjust the opening degree of a bottom valve, the working state of a pump and the working state of a heating jacket or a heater.
The preparation can be prepared once in 7 days and automatically added into a polymerization kettle according to the process requirements by a control system during the polymerization reaction.
After the polymerization reaction is finished, discharging the polymerization kettle to a latex recovery and concentration device, and then flushing the polymerization kettle, wherein the flushing process comprises the following steps:
1. setting a polymerization reaction limit value (such as 20 or 50), and automatically counting each polymerization process;
2. when the count is smaller than a limited value, after each polymerization reaction is finished, the cleaning device automatically cleans the interior of the polymerization kettle, and the cleaning water is conveyed from the polymerization kettle to the recovery and concentration device for vinyl chloride monomer recovery; waiting for the next batch of feed.
3. When the count is equal to a limited numerical value, the cleaning device automatically cleans the interior of the polymerization kettle, and the cleaning water is conveyed from the polymerization kettle to the recovery and concentration device for vinyl chloride monomer recovery; carrying out self-pressure recovery and forced recovery in the polymerization kettle; and opening the manhole and checking the polymerization kettle.
In order to realize the above cleaning process, a structure as shown in fig. 6 is adopted: at least one two-position pneumatic valve 14(DN200 pneumatic automatic control valve) is arranged on the shell of the polymerization kettle 16, one side of the two-position pneumatic valve is connected with the interface 15 of the polymerization kettle in a sealing way, the other side of the two-position pneumatic valve is communicated with a sealing sleeve 12, a three-dimensional cleaning device 11 is arranged on the sealing sleeve, and a cleaning head 13 at the front end of an expansion link 17 of the three-dimensional cleaning device can extend into the polymerization kettle when the two-position pneumatic valve is opened.
When two formula pneumatic valves are in the closed condition, the inside state that is in mutual isolation with sealing sleeve of polymerizer, when two formula pneumatic valves are in the open mode, polymerizer inside and sealing sleeve intercommunication each other, the telescopic link stretches out and gets into inside the polymerizer, please wash the head can three-dimensionally rotate and spout high-pressure heat deionized water (65 degrees centigrade) on to the polymerizer inner wall, because the inner wall of the polymerizer of washing that spun high-pressure heat deionized water can be even, realize the quick of polymerizer inner wall, comprehensive washing from this. The sealing sleeve isolates the inside of the polymerization kettle from the external environment, and prevents the evaporation substances in the polymerization kettle from entering the external environment.
In addition to the structure shown in fig. 6, referring to fig. 7, the three-dimensional cleaning device is disposed outside the polymerizer, the front end of the telescopic rod 17, the front end of which can be extended and retracted, extends into the sealing sleeve, and the front end of the telescopic rod is provided with a washing head capable of rotating three-dimensionally or a plurality of nozzles facing different directions (the front end of the telescopic rod is the washing head). When the cleaning is needed, the telescopic rod extends into the polymerization kettle, the high-pressure heat deionized water sprayed out when the cleaning head rotates is used for cleaning the inner wall of the polymerization kettle, or the plurality of nozzles at the front end of the telescopic rod spray the high-pressure heat deionized water to different positions of the inner wall of the polymerization kettle. The sealing sleeve isolates the inside of the polymerization kettle from the external environment, and prevents the evaporation substances in the polymerization kettle from entering the external environment.
The washed washing water enters the latex recovery and concentration device, the latex recovery and concentration device comprises a heating sleeve, a recovery tower 6 and a blowing groove, the heating sleeve 10 is sleeved outside the recovery tower and is communicated with the hot water groove through a hot water valve and a hot water pump, a spray head (distributor) 7 arranged in the recovery tower is communicated with one end of the blowing groove through a latex valve and a latex pump, a plurality of layers of tower trays 8 with overflow weirs 9 are arranged in the recovery tower, the output end of the bottom of the recovery tower is communicated with the other end of the blowing groove, the third end of the blowing groove is communicated with a polymerization kettle, and a liquid level meter and a thermometer are arranged in the recovery tower. Feedback signals of the liquid level meter and the thermometer are input into the control system, and the control system adjusts the hot water valve and the latex valve, so that the control of the liquid level in the recovery tower and the inner circulation of the heating jacket is realized. The height of the recovery tower is 7-10 m, the diameter is 2.5-4 m, the tray is 4-8 layers, and the distance between each layer is 40-80 cm.
The specific recovery process is as follows:
1. the blowing tank receives the latex discharged from the polymerizer and the washing water after washing.
2. The blow tank was heated to 70 degrees celsius and then the latex (including the paste resin, vinyl chloride monomer and water) was transferred to a recovery tower where it was evacuated and held at 65 degrees celsius.
3. Vapor, vinyl chloride monomer and other gaseous substances enter the recovery pipeline through the discharge valve to be recovered.
4. The remaining latex (including the paste resin, water and small amounts of vinyl chloride monomer) is returned to the blow tank where the vinyl chloride monomer autogenous pressure and forced (vacuum) recovery takes place.
5. After a period of time, the blow tank discharges the latex to the equipment for the drying process.
Examples
Aiming at the prior art and the invention, 8000 hours of production is respectively carried out, and all indexes are detected and recorded to form a comparison table as shown in table 1:
table 1: art comparison table
As can be seen from the contents in Table 1, in the same production period, the cycle per kettle of the invention is shortened, the yield is increased, the energy consumption, the monomer residual quantity, the steam consumption, the sewage quantity, the labor and the like are greatly reduced, and the quality and the latex solid content are greatly improved. It can be seen that the present invention is superior to the prior art in all aspects when in use.
Claims (9)
1. A polyvinyl chloride paste resin micro-suspension polymerization method comprises a polymerization process, a recovery process and a drying process, and is characterized in that: the equipment used in the polymerization process comprises a polymerization kettle, a dispersion tank, a toluene storage tank, an initiator 1 configuration tank, an initiator 1 program tank, an emulsifier program tank, an deionized water storage tank, a monomer storage tank and a post-mixing program tank;
the input end of the polymerization kettle is communicated with the output end of the dispersion tank, the input end of the dispersion tank is respectively communicated with an initiator 1 program groove, an initiator 2 program groove, an emulsifier program groove, a deionized water storage tank and a monomer storage tank, and the post-mixing program groove is communicated with the polymerization kettle; the initiator 1 program tank is communicated with the initiator 1 configuration tank, and the initiator 1 configuration tank is communicated with the toluene storage tank;
the output end of the polymerization kettle is communicated with the input end of a latex recovery and concentration device in the recovery process, and the latex discharged by the recovery and concentration device enters the drying process for treatment.
2. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 1, wherein: and carrying out a washing process after the polymerization process is finished, and conveying washing water after the washing process is finished to the input end of the recovery and concentration device.
3. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 2, wherein: the rinsing process comprises the steps of:
setting a polymerization reaction limit value, and automatically counting each polymerization process;
when the count is smaller than a limited value, after each polymerization reaction is finished, the cleaning device automatically cleans the interior of the polymerization kettle, and the cleaning water is conveyed from the polymerization kettle to the recovery and concentration device for vinyl chloride monomer recovery;
when the count is equal to a limited numerical value, the cleaning device automatically cleans the interior of the polymerization kettle, and the cleaning water is conveyed from the polymerization kettle to the recovery and concentration device for vinyl chloride monomer recovery; carrying out self-pressure recovery and forced recovery in the polymerization kettle; and opening the manhole and checking the polymerization kettle.
4. A process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 3, wherein: the input end of the post-mixing program tank is communicated with a post-mixing storage tank, and the post-mixing storage tank is arranged in a constant-temperature melting chamber.
5. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 1, 2, 3 or 4, wherein: the liquid level meter, the thermometer and the stirrer are arranged in the program tank, the flowmeter is arranged at the output end of the program tank, and the heating sleeve is arranged outside the program tank or the heater is arranged inside the program tank.
6. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 1, 2, 3 or 4, wherein: the latex recovery and concentration device comprises a heating sleeve, a recovery tower and a blowing groove, the heating sleeve is arranged on the outer sleeve of the recovery tower, a spray head arranged in the recovery tower is communicated with one end of the blowing groove, a plurality of layers of tower trays with overflow weirs are arranged in the recovery tower, the output end of the bottom of the recovery tower is communicated with the other end of the blowing groove, the third end of the blowing groove is communicated with the polymerization kettle, and a liquid level meter and a thermometer are arranged in the recovery tower.
7. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 5, wherein: the latex recovery and concentration device comprises a heating sleeve, a recovery tower and a blowing groove, the heating sleeve is arranged on the outer sleeve of the recovery tower, a spray head arranged in the recovery tower is communicated with one end of the blowing groove, a plurality of layers of tower trays with overflow weirs are arranged in the recovery tower, the output end of the bottom of the recovery tower is communicated with the other end of the blowing groove, the third end of the blowing groove is communicated with the polymerization kettle, and a liquid level meter and a thermometer are arranged in the recovery tower.
8. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 6, wherein: the device is characterized in that at least one two-position pneumatic valve is arranged on a shell of the polymerization kettle, one side of the two-position pneumatic valve is communicated with the inside of the polymerization kettle, the other side of the two-position pneumatic valve is communicated with a sealing sleeve, a cleaning head is arranged in the sealing sleeve, and the cleaning head can stretch into the polymerization kettle when the two-position pneumatic valve is opened.
9. The process for the microsuspension polymerization of polyvinyl chloride paste resin according to claim 7, wherein: the device is characterized in that at least one two-position pneumatic valve is arranged on a shell of the polymerization kettle, one side of the two-position pneumatic valve is communicated with the inside of the polymerization kettle, the other side of the two-position pneumatic valve is communicated with a sealing sleeve, a cleaning head is arranged in the sealing sleeve, and the cleaning head can stretch into the polymerization kettle when the two-position pneumatic valve is opened.
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| CN202110279507.5A CN113136000B (en) | 2021-03-16 | 2021-03-16 | Polyvinyl chloride paste resin micro-suspension polymerization method |
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| CN202110279507.5A CN113136000B (en) | 2021-03-16 | 2021-03-16 | Polyvinyl chloride paste resin micro-suspension polymerization method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452921A (en) * | 2021-12-27 | 2022-05-10 | 昆明云能化工有限公司 | Production system of polyvinyl chloride resin for cables |
| CN114950321A (en) * | 2022-06-07 | 2022-08-30 | 新疆中泰化学托克逊能化有限公司 | Polyvinyl chloride resin preparation facilities |
| CN116078308A (en) * | 2023-02-20 | 2023-05-09 | 河北国超热力工程有限公司 | Intelligent control method for reflux condenser at top of chloroethylene suspension polymerization kettle |
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| EP0306433A2 (en) * | 1987-08-31 | 1989-03-08 | The Goodyear Tire & Rubber Company | Micro-suspension polymerization of vinyl chloride |
| CN103331030A (en) * | 2013-07-23 | 2013-10-02 | 新疆中泰化学股份有限公司 | Stripping tower device with double overflow weir plates |
| CN105693899A (en) * | 2016-04-06 | 2016-06-22 | 辽宁方大工程设计有限公司 | Device for producing polyvinyl chloride paste resin by micro emulsion suspension process and production method using device |
| CN107365428A (en) * | 2017-08-23 | 2017-11-21 | 天津渤天化工有限责任公司 | PVC paste resin Monomer Recovery System and method |
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2021
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306433A2 (en) * | 1987-08-31 | 1989-03-08 | The Goodyear Tire & Rubber Company | Micro-suspension polymerization of vinyl chloride |
| CN103331030A (en) * | 2013-07-23 | 2013-10-02 | 新疆中泰化学股份有限公司 | Stripping tower device with double overflow weir plates |
| CN105693899A (en) * | 2016-04-06 | 2016-06-22 | 辽宁方大工程设计有限公司 | Device for producing polyvinyl chloride paste resin by micro emulsion suspension process and production method using device |
| CN107365428A (en) * | 2017-08-23 | 2017-11-21 | 天津渤天化工有限责任公司 | PVC paste resin Monomer Recovery System and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452921A (en) * | 2021-12-27 | 2022-05-10 | 昆明云能化工有限公司 | Production system of polyvinyl chloride resin for cables |
| CN114452921B (en) * | 2021-12-27 | 2024-04-30 | 昆明云能化工有限公司 | Production system of polyvinyl chloride resin for cables |
| CN114950321A (en) * | 2022-06-07 | 2022-08-30 | 新疆中泰化学托克逊能化有限公司 | Polyvinyl chloride resin preparation facilities |
| CN116078308A (en) * | 2023-02-20 | 2023-05-09 | 河北国超热力工程有限公司 | Intelligent control method for reflux condenser at top of chloroethylene suspension polymerization kettle |
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| CN113136000B (en) | 2022-12-30 |
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