CN109675499B - Polytetrafluoroethylene dispersion resin polymerization automation application device - Google Patents
Polytetrafluoroethylene dispersion resin polymerization automation application device Download PDFInfo
- Publication number
- CN109675499B CN109675499B CN201910048751.3A CN201910048751A CN109675499B CN 109675499 B CN109675499 B CN 109675499B CN 201910048751 A CN201910048751 A CN 201910048751A CN 109675499 B CN109675499 B CN 109675499B
- Authority
- CN
- China
- Prior art keywords
- monomer
- tank
- reaction kettle
- valve
- communicated
- 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
- 239000006185 dispersion Substances 0.000 title claims abstract description 87
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 40
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 40
- 239000011347 resin Substances 0.000 title claims abstract description 30
- 229920005989 resin Polymers 0.000 title claims abstract description 30
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 25
- -1 Polytetrafluoroethylene Polymers 0.000 title claims abstract description 16
- 239000000178 monomer Substances 0.000 claims abstract description 208
- 238000006243 chemical reaction Methods 0.000 claims abstract description 111
- 239000007788 liquid Substances 0.000 claims abstract description 98
- 239000006096 absorbing agent Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000007599 discharging Methods 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/04—Pressure vessels, e.g. autoclaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/002—Component parts of these vessels not mentioned in B01J3/004, B01J3/006, B01J3/02 - B01J3/08; Measures taken in conjunction with the process to be carried out, e.g. safety measures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/02—Feed or outlet devices therefor
-
- 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
- C08F14/00—Homopolymers and copolymers 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
- C08F14/02—Monomers containing chlorine
- C08F14/04—Monomers containing two carbon atoms
- C08F14/06—Vinyl chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polymerisation Methods In General (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
Abstract
The invention belongs to the technical field of chemical equipment, and discloses an automatic polytetrafluoroethylene dispersion resin polymerization application device which is provided with a monomer groove; the upper end of the monomer tank is communicated with the monomer absorber through a pipeline, the monomer absorber is communicated with the reaction kettle through a monomer filter, the reaction kettle is communicated with the dispersion liquid filter tank through a reaction kettle discharge cut-off valve, and the dispersion liquid filter tank is communicated with the PTFE aftertreatment pipe network through a filter tank discharge cut-off valve. The invention aims to promote the automatic control of PTFE dispersion resin polymerization, improve the accuracy, precision and sensitivity of automatic production and measurement, reduce random errors of manual operation, replace the original manual pressure drop pinching operation by the application of the polymerization automation technology, promote the uniformity of molecular weight distribution, finally promote the product quality of PTFE dispersion resin, reduce the labor intensity of workers, reduce the cost and increase the efficiency, drive the development of enterprises and improve the economic benefit of the enterprises.
Description
Technical Field
The invention belongs to the technical field of chemical equipment, and particularly relates to an automatic polymerization application device for polytetrafluoroethylene dispersion resin.
Background
Currently, the current state of the art commonly used in the industry is as follows: PTFE dispersion resin is popular with national defense and sophisticated technologies due to excellent high-low temperature performance and chemical stability, and gradually pushed to civilian use, but production technical means of enterprises and units in China are too traditional according to own process conditions and market demands so far, operation conditions are harsh, most of the PTFE dispersion resin stays in a manual mode, and certain potential safety hazards exist in the production process.
At present, the production plate of the common grade of the dispersion resin in China is in a continuous trend and has a large scale, but a set of relatively perfect automatic control system is not established for the development of novel resin so far, the production process means is too manual, and the molecular weight distribution is uneven, so that the quality and grade of the final product are endangered, and the benefit of the product is uneven.
At present, most of industrial PTFE dispersion resins are manually operated, and a monomer tank is simultaneously put into tetrafluoroethylene for reaction in the manual temperature rising and pressure rising process, so that the temperature rising and pressure rising and the feeding of the reaction kettle are difficult to be simultaneously considered, the accurate control of the tetrafluoroethylene feeding amount of the reaction kettle is difficult to be realized by the manual operation, and certain potential safety hazard exists in the manual operation process; the pressure drop of the reaction kettle is only remained in manual feeding, the manual timing is performed, the manual feeding is difficult to accurately reach the pressure value required by the reaction kettle, a certain delay error exists in the manual timing, the feeding accuracy of the reaction kettle is affected, the uneven distribution of the molecular weight of PTFE dispersion resin is directly caused, and finally the product quality and grade are difficult to ensure.
In summary, the problems of the prior art are:
(1) The industrial PTFE dispersion resin is mostly manually operated, if the temperature of a monomer evaporator is increased by adopting manual operation, the temperature control of the monomer evaporator is inaccurate, and a manual random error causes that a manual valve for discharging a monomer tank cannot be closed in place in time, so that the potential safety hazard that the pressure of the monomer tank is continuously increased is triggered, the PTFE dispersion resin polymerization reaction belongs to high-pressure reaction, and if the feeding and boosting operations are singly considered manually, the stability is low, the simultaneous consideration of the feeding and boosting operations is difficult, and a certain potential safety hazard exists;
(2) The accurate control of the tetrafluoroethylene feeding amount of the reaction kettle is difficult to realize by manual operation, and the PTFE dispersion resin polymerization reaction belongs to exothermic reaction, the reaction kettle is mostly manually pinched off, the temperature is difficult to grasp due to difficult control of feeding, uneven distribution of the molecular weight of the PTFE dispersion resin is caused, and therefore the physical and mechanical properties of the product are affected.
The difficulty of solving the technical problems is as follows: the hardware of the existing instrument has weak anti-interference capability and large type selection difficulty, and the accuracy, precision and sensitivity of the automatic measuring instrument are still to be improved, for example, the PID control of the pneumatic valve is not sensitive.
Meaning of solving the technical problems: the automatic application eliminates the potential safety hazard of field operators, reduces labor intensity, saves labor cost, and improves the product quality of PTFE dispersion resin to a great extent, thereby improving economic benefit.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides an automatic polymerization application device for polytetrafluoroethylene dispersion resin.
The invention is realized in such a way that an automatic application device for polymerization of polytetrafluoroethylene dispersion resin is provided with:
A monomer tank;
The monomer tank is communicated with the PTFE feeding pipe network through a monomer tank feeding cut-off valve, and the monomer tank feeding cut-off valve is electrically connected with a liquid level meter of the monomer tank cylinder, namely when the liquid level of the monomer tank reaches a set value, the monomer tank feeding cut-off valve automatically closes and cuts off feeding, so that the liquid level interlocking of the monomer tank feeding cut-off valve and the liquid level meter of the monomer tank cylinder is realized; the lower end of the monomer tank is sequentially communicated with a monomer tank discharging cut-off valve, a monomer tank discharging regulating valve and a monomer evaporator through pipelines, the monomer tank discharging regulating valve is electrically connected with a remote pressure transmitter of the monomer tank cylinder, namely when the pressure of the monomer tank is close to a set value, the monomer tank discharging regulating valve automatically closes or opens the opening of the regulating valve through PID control, so that the pressure interlocking of the monomer tank discharging regulating valve and the remote pressure transmitter of the monomer tank cylinder is realized;
The upper end of the monomer tank is communicated with a monomer absorber through a pipeline, the monomer absorber is communicated with a reaction kettle through a monomer filter, and a reaction kettle feeding flowmeter, a reaction kettle feeding regulating valve and a reaction kettle feeding cut-off valve are sequentially communicated between the monomer absorber and the monomer filter;
The reaction kettle cylinder is communicated with a reaction kettle remote pressure transmitter, the reaction kettle remote pressure transmitter is electrically connected with a reaction kettle feed regulating valve, namely, when the pressure of the reaction kettle is close to a set value, the reaction kettle feed regulating valve is automatically closed or opened by PID control to control the opening degree of the regulating valve, so that the pressure interlocking of the reaction kettle feed regulating valve and the reaction kettle cylinder remote pressure transmitter is realized, the reaction kettle is communicated with a dispersion liquid filter tank through a reaction kettle discharge cut-off valve, the reaction kettle discharge cut-off valve is electrically connected with a liquid level meter of the dispersion liquid filter tank cylinder, namely, when the liquid level of the dispersion liquid filter tank reaches the set value, the reaction kettle discharge cut-off valve is automatically closed to cut off feed, and the liquid level interlocking of the reaction kettle discharge cut-off valve and the liquid level meter of the dispersion liquid filter tank cylinder is realized; the dispersion liquid filter tank is communicated with the PTFE post-treatment pipe network through a filter tank discharging cut-off valve.
The invention aims to promote the automatic control of PTFE dispersion resin polymerization, the polymerization automation technology replaces the manual heating and boosting and manual feeding in the original production operation, the original manual valve is repeatedly opened and closed in the actual heating and boosting operation process, the blocking phenomenon is caused after the manual valve is repeatedly operated due to the particularity that the reaction raw materials are easy to self-gather, the risk of inaccurate temperature control and continuous pressure rising is caused by random errors of the manual operation, the automatic interlocking is put into use, the stability of temperature control and pressure control is improved, the valve blocking is reduced, the operation of field personnel is not needed, the labor intensity is reduced, and the labor cost is saved; the application of the polymerization automation technology replaces the original manual pressure drop meter pinching operation, the original reaction judgment adopts manual meter pinching and manual feeding, the manual operation has a certain time delay, the reaction state cannot be completely and accurately judged, the automation metering and the interlocking are put into use, the measuring accuracy, precision and sensitivity are improved, the automatic technical performance is continuously improved, the correct reaction state feedback is made, the reaction temperature is timely grasped, the uniformity of molecular weight distribution is promoted, the product quality of PTFE dispersion resin is finally improved, the manual labor intensity is reduced, the development of enterprises is driven, and the economic benefit of the enterprises is improved.
Further, the monomer groove cylinder is communicated with a monomer groove liquid level meter through a pipeline, and the monomer groove liquid level meter is electrically connected with a monomer groove feeding cut-off valve.
According to the invention, after the liquid level in the monomer tank reaches the high limit set value, the feeding cut-off valve of the monomer tank is automatically closed, the problem of accurate feeding measurement of the monomer tank is effectively solved, a PLC control system is adopted in the temperature rising and pressure increasing process of the monomer tank, a high limit value alarm is set for the liquid level of the monomer tank at a DCS interface, when the feeding amount of the monomer tank reaches the high limit value, the system alarms and effectively reminds an operator, and the potential safety hazard of the monomer tank to a great extent due to the fact that the manual feeding amount is too small in atmospheric gas phase space is ensured.
Further, the upper end of the monomer evaporator is communicated with the upper end of the monomer tank through a pipeline, the lower end and the upper end of the monomer evaporator are respectively communicated with a medium-temperature hot water inlet pipe and a medium-temperature hot water return pipe through pipelines, a monomer evaporator water inlet cut-off valve is fixed between the medium-temperature hot water inlet pipe and the monomer evaporator through a flange, the monomer evaporator water inlet cut-off valve is communicated with a monomer evaporator thermal resistor, and the monomer evaporator thermal resistor is communicated with the upper end of the monomer evaporator through a pipeline.
When the monomer evaporator has a heating condition, the water inlet cut-off valve of the monomer evaporator can be opened to continuously supply medium-temperature hot water outside the coil pipe of the monomer evaporator, and after the temperature of the monomer evaporator reaches a required set value, the water inlet cut-off valve of the monomer evaporator is automatically closed, and the temperature of the monomer evaporator and the water inlet cut-off valve of the monomer evaporator are interlocked to realize automatic control of the temperature of the monomer evaporator, so that the phenomenon of unstable temperature caused by manual pump starting and manual water inlet valve switching is effectively overcome, and the boosting operation of a subsequent monomer is influenced.
Further, the monomer adsorber cylinder is communicated with a monomer adsorber thermal resistor and a monomer adsorber remote pressure transmitter through pipelines.
According to the invention, the thermal resistor is additionally arranged on the single absorber, so that the self-aggregation condition in the single absorber can be effectively and timely judged, and the temperature high-limit value alarm is set, so that the judgment can be timely performed, and the safe operation is ensured. Meanwhile, a remote pressure transmitter is arranged, so that whether the pressure difference between the front and the rear of the single adsorber is increased can be distinguished, the phenomenon that the single adsorber is blocked and cannot be effectively predicted is avoided, and finally the product quality is influenced.
Further, the dispersion liquid filtering tank body is communicated with a filtering tank liquid level meter through a pipeline, and the reaction kettle discharging cut-off valve is electrically connected with the filtering tank liquid level meter.
According to the invention, the liquid level in the filter tank can be detected through the filter tank liquid level meter, the liquid level of the dispersion liquid filter tank is interlocked with the discharge cut-off valve of the reaction kettle, so that the automatic control of the liquid level of the dispersion liquid filter tank is realized, meanwhile, a PLC control system is adopted in the discharge process of the reaction kettle, a high-limit value alarm is set on the liquid level of the dispersion liquid filter tank at a DCS interface, and after the liquid level of the dispersion liquid filter tank reaches a high-limit set value, a corresponding alarm indication is made by an automatic control system, so that the overflow phenomenon of the dispersion liquid filter tank is effectively overcome, and the automatic safe and stable feeding of the dispersion liquid is realized.
Further, a silk screen pressing frame is fixed inside the dispersion liquid filtering tank through a bolt, and a double-layer stainless steel wire mesh is fixed inside the silk screen pressing frame through a bolt.
According to the invention, the dispersion liquid filter tank is fully filtered by adopting the finish-polished double-layer stainless steel wire mesh, so that the emulsion breaking materials in the dispersion liquid guided in the reaction kettle are effectively intercepted.
Further, the dispersion liquid filter tank feed pipe adopts a bottom-inserted pipe form, and the feed pipe stretches into the bottom of the dispersion liquid filter tank.
The dispersion liquid discharged from the reaction kettle enters the dispersion liquid filtering tank in the form of a bottom inserting pipe, and a feed pipe is in a liquid sealing state before the dispersion liquid enters the tank, so that the impact frequency of the dispersion liquid on the tank wall is reduced, and the demulsification of the dispersion liquid is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of an automated polytetrafluoroethylene dispersion resin polymerization application apparatus according to an embodiment of the present invention;
In the figure: 1. a monomer tank feeding cut-off valve; 2. a monomer tank level gauge; 3. a single cell remote pressure transmitter; 4. a monomer adsorber; 5. thermal resistance of the single absorber; 6. a single adsorber remote pressure transmitter; 7. a reactor feed flowmeter; 8. a reaction kettle feeding regulating valve; 9. a reaction kettle feeding cut-off valve; 10. a monomer tank; 11. a single tank discharging cut-off valve; 12. a single tank discharging regulating valve; 13. thermal resistance of the monomer evaporator; 14. a water inlet cut-off valve of the monomer evaporator; 15. a monomer evaporator; 16. a filter tank discharging cut-off valve; 17. a dispersion liquid filtering tank; 18. a reaction kettle; 19. a reaction kettle remote pressure transmitter; 20. a monomer filter; 21. PTFE (polytetrafluoroethylene) feeding pipe network; 22. removing a medium-temperature hot water return pipe; 23. medium-temperature hot water inlet pipe; 24. removing PTFE post-treatment pipe network; 25, a step of selecting a specific type of material; a reaction kettle discharging cut-off valve; 26. a filter tank level gauge.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.
The principle of application of the invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an apparatus for automatically applying polytetrafluoroethylene dispersion resin polymerization according to an embodiment of the present invention includes: a monomer tank feeding cut-off valve 1, a monomer tank liquid level meter 2, a monomer tank remote pressure transmitter 3, a monomer absorber 4, a monomer absorber thermal resistor 5, a monomer absorber remote pressure transmitter 6, a reaction kettle feeding flowmeter 7, a reaction kettle feeding regulating valve 8, a reaction kettle feeding cut-off valve 9, a monomer tank 10, a monomer tank discharging cut-off valve 11, a monomer tank discharging regulating valve 12, a monomer evaporator thermal resistor 13, a monomer evaporator water inlet cut-off valve 14, a monomer evaporator 15, a filter tank discharging cut-off valve 16, a dispersion liquid filter tank 17, a reaction kettle 18, a reaction kettle remote pressure transmitter 19, a monomer filter 20, a PTFE feeding pipe network 21, a medium-temperature hot water removing return pipe 22, a medium-temperature hot water inlet pipe 23 and a PTFE removing post-treatment pipe network 24; a reaction kettle discharge cut-off valve 25 and a filter tank liquid level gauge 26.
The monomer tank 10 is communicated with a PTFE feeding pipe network 21 through a monomer tank feeding cut-off valve 1, the lower end of the monomer tank 10 is sequentially communicated with a monomer tank discharging cut-off valve 11, a monomer tank discharging regulating valve 12 and a monomer evaporator 15 through pipelines, and the monomer tank discharging regulating valve 12 is electrically connected with a monomer tank remote transmission pressure transmitter 3 outside the monomer tank 10; the upper end of the monomer tank 10 is communicated with the monomer absorber 4 through a pipeline, the monomer absorber 4 is communicated with the reaction kettle 18 through a monomer filter 20, and a reaction kettle feeding flowmeter 7, a reaction kettle feeding regulating valve 9 and a reaction kettle feeding cut-off valve 8 are sequentially communicated between the monomer absorber and the monomer filter 4; the outside of the reaction kettle 18 is communicated with a reaction kettle remote pressure transmitter 19, the reaction kettle remote pressure transmitter 19 is electrically connected with the reaction kettle feed regulating valve 9, the reaction kettle 18 is communicated with a dispersion liquid filter tank 17 through a reaction kettle discharge cut-off valve 25, and the dispersion liquid filter tank 17 is communicated with a PTFE aftertreatment pipe network 24 through a filter tank discharge cut-off valve 16.
Preferably, the outside of the monomer tank 10 is communicated with a monomer tank liquid level meter 2 through a pipeline, and the monomer tank liquid level meter 2 is electrically connected with a monomer tank feeding cut-off valve 1.
Preferably, the upper end of the monomer evaporator 15 is communicated with the upper end of the monomer tank 10 through a pipeline, the lower end and the upper end of the monomer evaporator 15 are respectively communicated with the middle-temperature hot water inlet pipe 23 and the middle-temperature hot water outlet return pipe 22 through pipelines, a monomer evaporator water inlet cut-off valve 14 is fixed between the middle-temperature hot water inlet pipe 23 and the monomer evaporator 15 through a flange, the monomer evaporator water inlet cut-off valve 14 is communicated with the monomer evaporator thermal resistor 13, and the monomer evaporator thermal resistor 13 is communicated with the upper end of the monomer evaporator 10 through a pipeline.
Preferably, the outside of the single adsorber 4 is communicated with a single adsorber thermal resistor 5 and a single adsorber remote pressure transmitter 6 through pipelines.
Preferably, the outside of the dispersion liquid filter tank 17 is communicated with a filter tank liquid level meter 26 through a pipeline, and a reactor discharge cut-off valve 25 is electrically connected with the filter tank liquid level meter 26.
Preferably, a wire mesh pressing frame is fixed inside the dispersion liquid filtering tank 17 through bolts, and a double-layer stainless steel wire mesh is fixed inside the wire mesh pressing frame through bolts.
Preferably, the feed pipe of the dispersion filter tank 17 is in the form of a bottom-inserted pipe, which extends into the bottom of the dispersion filter tank 17.
When the invention is used, the monomer tank 10 is used as metering and is fed from the tank bottom, materials enter the monomer tank 10 from a TFE feeding pipe network through the monomer tank feeding cut-off valve 1, and when the monomer tank liquid level meter 2 displays that the set value is reached, the monomer tank feeding cut-off valve 1 is automatically closed, and the material collection of the monomer tank 10 is completed; the monomer tank 10 is respectively connected with the monomer absorber 4 and the monomer evaporator 15, the gas phase in the material enters the monomer absorber 4, the liquid phase enters the monomer evaporator 15, the top of the monomer evaporator 15 is provided with a hole, and the outlet pipeline is connected with the top of the monomer tank 10; the gas phase in the monomer tank 10 enters a monomer filter 20 through a monomer absorber 4, then enters a reaction kettle 18 from the top of the reaction kettle, and is discharged to a dispersion liquid filter tank 17 from the bottom of the reaction kettle.
The feeding system is characterized in that a remote liquid level meter 2 is arranged on a monomer tank 10, pipe orifices are respectively formed in the upper part and the bottom of the monomer tank 10, the remote liquid level meter 2 is connected with the pipe orifices of the monomer tank by adopting flanges, and a monomer tank feeding cut-off valve 1 is arranged on a feeding pipe at the lower part of the monomer tank.
The heating system is characterized in that a thermal resistor 13 is arranged on a monomer evaporator 15, a pipe orifice is formed in the top of the monomer evaporator 15, the thermal resistor 13 is connected with the pipe orifice of the monomer evaporator 15 through threads, a medium-temperature hot water inlet pipe is additionally arranged on the side surface of the monomer evaporator 15, and a water inlet cut-off valve 14 of the monomer evaporator is arranged on the medium-temperature hot water inlet pipe.
The boosting system is characterized in that a remote pressure transmitter 3 is arranged on a single tank 10, a pipe orifice is opened at the top of the single tank 10, the remote pressure transmitter 3 is connected with the pipe orifice of the single tank 10 by adopting a flange, and a single tank discharge cut-off valve 11 and a single tank discharge regulating valve 12 are arranged on a discharge pipe at the bottom of the single tank 10.
The reaction system is provided with a remote pressure transmitter 19 on a reaction kettle 18, a pipe orifice is opened at the top of the reaction kettle, the remote pressure transmitter 19 is connected with the pipe orifice of the reaction kettle by adopting a flange, and a reaction kettle feeding flowmeter 7, a reaction kettle feeding cut-off valve 9 and a reaction kettle feeding regulating valve 8 are arranged on a feed pipe at the top of the reaction kettle.
The reaction system is characterized in that a single absorber 4 is additionally arranged on a feeding pipe of a reaction kettle 18, a thermal resistor 5 is arranged at the middle lower part of the single absorber 4, a remote pressure transmitter 6 is arranged at the top of the single absorber, and a single filter 20 is additionally arranged on the feeding pipe of the reaction kettle.
The main body of the discharging system is a dispersion liquid filter tank 17 with a belt for filtering, the right side of a cylinder body of the discharging system is filtered by adopting a silk screen pressing frame combined fine polishing double-layer stainless steel wire gauze, a feed pipe of the dispersion liquid filter tank 17 is in a bottom-inserted pipe mode, a remote transmission liquid level meter is arranged at the top of the dispersion liquid filter tank 17, a reaction kettle discharging cut-off valve 25 is arranged on the feed pipe of the dispersion liquid filter tank 17, and a filter tank discharging cut-off valve 16 is arranged on a discharge pipe at the bottom of the dispersion liquid filter tank 17.
According to the invention, the dispersion liquid filter tank 17 is arranged behind the discharge pipe of the reaction kettle, the dispersion liquid conveyed by the reaction kettle 18 enters the dispersion liquid filter tank 17 in a bottom-inserted pipe mode, and the feed pipe is in a liquid sealing state before the dispersion liquid enters the tank, so that the impact frequency of the dispersion liquid with the tank wall is reduced, the emulsion breaking of the dispersion liquid is greatly reduced, the tank is fully filtered by adopting a finish-polished double-layer stainless steel wire net, and the effective interception of emulsion breaking materials in the dispersion liquid guided in the reaction kettle 18 is realized. The reaction kettle 18 is provided with a discharging condition, a reaction kettle discharging cut-off valve 25 can be opened, after the liquid level in the dispersion liquid filter tank 17 reaches a set liquid level value, the reaction kettle discharging cut-off valve is automatically closed, the liquid level 26 of the dispersion liquid filter tank and the reaction kettle discharging cut-off valve 25 are interlocked to realize automatic control of the liquid level of the dispersion liquid filter tank 17, meanwhile, a high-limit value alarm is set for the liquid level of the dispersion liquid filter tank 17, and after the liquid level of the dispersion liquid filter tank 17 reaches the high-limit set value, a corresponding alarm indication is made by an automatic control system, so that the overflow phenomenon of the dispersion liquid filter tank 17 is effectively overcome, and automatic safe and stable feeding of the dispersion liquid is realized.
The monomer tank 10 is in the charge state, can open monomer tank feeding trip valve 1, after the liquid level reaches the setting value in the monomer tank 10, self-closing monomer tank feeding trip valve 1, monomer tank level gauge 2 realizes the automatic control of monomer tank liquid level with monomer tank feeding trip valve 1 interlocking to effectively solve the accurate feeding metering problem of monomer tank to set up the high limit value to the monomer tank liquid level, when the monomer tank feed volume reaches the high limit value, the system reports to the police and effectively reminds the operator, ensures that the monomer tank is because of manual feed volume too big atmospheric space is little causes to a great extent potential safety hazard.
The monomer evaporator 15 has the heating condition, can open monomer evaporator water inlet cut-off valve 14, carries out the continuous warm water of supplying to outside the monomer evaporator 15 coil pipe, and after monomer evaporator 15 temperature reached the requirement setting value, the automatic shutdown of monomer evaporator water inlet cut-off valve 14 is closed to the automation, and monomer evaporator 15 temperature and monomer evaporator water inlet cut-off valve 14 interlock realize the automatic control of monomer evaporator temperature, effectively overcome manual pump that opens, switch the unstable phenomenon of temperature that manual water intaking valve caused, influence the operation of stepping up of follow-up monomer.
The monomer tank 10 has the condition of stepping up, after the temperature of the monomer evaporator 15 reaches the working condition requirement, the monomer tank discharge cut-off valve 11 and the monomer tank discharge regulating valve 12 can be opened, after the pressure of the monomer tank 10 is close to a required set pressure value, the monomer tank discharge regulating valve 12 is automatically turned off or turned on, the pressure of the monomer tank 10 and the monomer tank discharge regulating valve 12 are interlocked to realize the automatic control of the pressure of the monomer tank, the problem of unstable stepping up caused by manual operation of the monomer tank 10 discharge valve in the past is effectively avoided, the manual valve is frequently and easily self-accumulated and blocked, a certain maintenance safety problem is brought, the manual cost is saved because the manual discharge valve is not required to be operated by on-site operators, the labor intensity is greatly reduced, and meanwhile, the pressure change condition of the monomer tank 10 can be closely observed through remote transmission of the pressure, and necessary solving measures are timely taken.
The thermal resistor 5 is additionally arranged in the single absorber 4, so that the self-polymerization condition in the single absorber 4 can be effectively and timely judged, if the self-polymerization condition occurs, the self-polymerization of silica gel in the single absorber 4 is carried out, the temperature rise phenomenon is accompanied, the temperature high-limit value alarm is set, the timely prejudgment can be realized, and the safe operation is ensured. Meanwhile, the remote pressure transmitter 6 is arranged, so that whether the pressure difference between the front and the rear of the single adsorber 4 is increased can be distinguished, the situation that the single adsorber 4 is blocked and cannot be effectively predicted is avoided, corresponding measures are timely taken, and finally the product quality is influenced.
In the early reaction stage of the reaction kettle 18, the reaction kettle feed cut-off valve 7 and the reaction kettle feed regulating valve 9 can be opened, the reaction kettle 18 is fed, after the pressure of the reaction kettle 18 reaches a set value, the reaction kettle feed regulating valve 9 is automatically closed, the reaction starts to enter a pressure drop state, the reaction kettle feed regulating valve 9 is automatically opened within a working condition time range when the pressure drop reaches a working condition, after the pressure of the reaction kettle reaches the set value again, the self-control program is automatically switched to a reaction stage, the reaction kettle feed regulating valve 9 is automatically opened and closed in the reaction process, the set value of the reaction pressure is maintained, meanwhile, the high-limit alarm value of the reaction pressure is additionally arranged, the pressure condition of the reaction kettle is timely reminded, the overpressure phenomenon of the reaction kettle is avoided, and the safety of equipment and personnel is ensured. The pressure boost through monomer tank 10 and with reation kettle 18 pressure differential can effectively carry the monomer to reation kettle 18, monomer tank 10 is stepped up simultaneously, and reation kettle 18 satisfies the operating mode demand and throws the material simultaneously, effectively solves the drawback that step up and throw the material and be difficult to compromise during manual operation to reation kettle 18 feeding flowmeter 8 has been set up on reation kettle 18 inlet pipe, realizes advancing the accurate control of tetrafluoroethylene volume to reation kettle 18.
The invention provides an automatic application device for polymerization of polytetrafluoroethylene dispersion resin, which can effectively solve the defect of unstable temperature control of manual operation, promote uniformity of molecular weight distribution of products, finally promote product quality, reduce manual operation intensity, reduce cost and increase efficiency due to automatic setting, and promote reliability and safety of field operation.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention are within the scope of the technical solutions of the present invention.
Claims (5)
1. An automated polytetrafluoroethylene dispersion resin polymerization application apparatus, characterized in that the automated polytetrafluoroethylene dispersion resin polymerization application apparatus is provided with:
A monomer tank;
The monomer tank is communicated with a PTFE feeding pipe network through a monomer tank feeding cut-off valve, and the lower end of the monomer tank is sequentially communicated with a monomer tank discharging cut-off valve, a monomer tank discharging regulating valve and a monomer evaporator through pipelines, and the monomer tank discharging regulating valve is electrically connected with a monomer tank remote transmission pressure transmitter at the outer side of the monomer tank;
The upper end of the monomer tank is communicated with a monomer absorber through a pipeline, the monomer absorber is communicated with a reaction kettle through a monomer filter, and a reaction kettle feeding flowmeter, a reaction kettle feeding regulating valve and a reaction kettle feeding cut-off valve are sequentially communicated between the monomer absorber and the monomer filter;
The reaction kettle is communicated with a reaction kettle remote pressure transmitter, the reaction kettle remote pressure transmitter is electrically connected with a reaction kettle feeding regulating valve, the reaction kettle is communicated with a dispersion liquid filter tank through a reaction kettle discharging cut-off valve, and the dispersion liquid filter tank is communicated with a PTFE aftertreatment pipe network through a filter tank discharging cut-off valve;
the monomer tank cylinder is communicated with a monomer tank liquid level meter through a pipeline, and the monomer tank liquid level meter is electrically connected with a monomer tank feeding cut-off valve;
The upper end of the monomer evaporator is communicated with the upper end of the monomer tank through a pipeline, the lower end and the upper end of the monomer evaporator are respectively communicated with a middle-temperature hot water inlet pipe and a middle-temperature hot water return pipe through pipelines, a monomer evaporator water inlet cut-off valve is fixed between the middle-temperature hot water inlet pipe and the monomer evaporator through a flange, the monomer evaporator water inlet cut-off valve is communicated with a monomer evaporator thermal resistor, and the monomer evaporator thermal resistor is communicated with the upper end of the monomer evaporator through a pipeline.
2. The automated polytetrafluoroethylene dispersion resin polymerization application apparatus of claim 1, wherein the monomer adsorber cylinder is in communication with a monomer adsorber thermal resistor and a monomer adsorber remote pressure transmitter via a conduit.
3. The automated polytetrafluoroethylene dispersion resin polymerization application device according to claim 1, wherein the dispersion liquid filtering tank body is communicated with a filtering tank liquid level meter through a pipeline, and the reaction kettle discharging cut-off valve is electrically connected with the filtering tank liquid level meter.
4. The automated polytetrafluoroethylene dispersion resin polymerization application device according to claim 1, wherein a wire mesh press frame is fixed inside the dispersion filter tank by bolts, and a double-layer stainless steel wire mesh is fixed inside the wire mesh press frame by bolts.
5. An automated polytetrafluoroethylene dispersion resin polymerization application apparatus according to claim 1 wherein the dispersion filter tank feed tube is in the form of a bottom tube, the feed tube extending into the bottom of the dispersion filter tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048751.3A CN109675499B (en) | 2019-01-18 | 2019-01-18 | Polytetrafluoroethylene dispersion resin polymerization automation application device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048751.3A CN109675499B (en) | 2019-01-18 | 2019-01-18 | Polytetrafluoroethylene dispersion resin polymerization automation application device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109675499A CN109675499A (en) | 2019-04-26 |
| CN109675499B true CN109675499B (en) | 2024-05-17 |
Family
ID=66193650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048751.3A Active CN109675499B (en) | 2019-01-18 | 2019-01-18 | Polytetrafluoroethylene dispersion resin polymerization automation application device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109675499B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113967457A (en) * | 2021-10-18 | 2022-01-25 | 福建三农新材料有限责任公司 | Preparation method, refining device and application of perfluorohexylethanol |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020030944A (en) * | 2000-10-18 | 2002-04-26 | 김충섭 | The contiunous transport equipments for PTFE pyrolysis |
| CN203342791U (en) * | 2013-06-08 | 2013-12-18 | 山东瑞特新材料有限公司 | Polytetrafluoroethylene polymerization reaction device |
| CN204297389U (en) * | 2014-11-14 | 2015-04-29 | 浙江巨圣氟化学有限公司 | A kind of monomer storage tank being applied to polytetrafluoroethylene |
| CN106397644A (en) * | 2016-04-28 | 2017-02-15 | 福建三农化学农药有限责任公司 | Device and method for preparing polytetrafluoroethylene |
| CN208200800U (en) * | 2017-05-27 | 2018-12-07 | 泰兴市梅兰化工有限公司 | A kind of Kynoar reaction system |
| CN209576622U (en) * | 2019-01-18 | 2019-11-05 | 福建三农新材料有限责任公司 | A kind of polytetrafluoroethyldispersion dispersion resin polymerization automation application device |
-
2019
- 2019-01-18 CN CN201910048751.3A patent/CN109675499B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020030944A (en) * | 2000-10-18 | 2002-04-26 | 김충섭 | The contiunous transport equipments for PTFE pyrolysis |
| CN203342791U (en) * | 2013-06-08 | 2013-12-18 | 山东瑞特新材料有限公司 | Polytetrafluoroethylene polymerization reaction device |
| CN204297389U (en) * | 2014-11-14 | 2015-04-29 | 浙江巨圣氟化学有限公司 | A kind of monomer storage tank being applied to polytetrafluoroethylene |
| CN106397644A (en) * | 2016-04-28 | 2017-02-15 | 福建三农化学农药有限责任公司 | Device and method for preparing polytetrafluoroethylene |
| CN208200800U (en) * | 2017-05-27 | 2018-12-07 | 泰兴市梅兰化工有限公司 | A kind of Kynoar reaction system |
| CN209576622U (en) * | 2019-01-18 | 2019-11-05 | 福建三农新材料有限责任公司 | A kind of polytetrafluoroethyldispersion dispersion resin polymerization automation application device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109675499A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104474988B (en) | A kind of automatic control method neutralizing reaction unit | |
| CN105927210B (en) | Integrated automatic well selection metering device and multi-process automatic oil well yield metering method | |
| CN109675499B (en) | Polytetrafluoroethylene dispersion resin polymerization automation application device | |
| CN100582711C (en) | Device for testing product air leakage | |
| CN103527173B (en) | A kind of metering device of output of fluid produced by oil production well | |
| CN114961675B (en) | Intelligent on-line detection injection equipment | |
| CN108147133A (en) | A kind of silicone sealant raw material intelligence transport system for building | |
| CN209576622U (en) | A kind of polytetrafluoroethyldispersion dispersion resin polymerization automation application device | |
| CN111196047A (en) | Automatic accurate ratio and monitored control system | |
| CN110426465A (en) | A kind of transformer oil chromatographic degasser and its control method | |
| CN115672219A (en) | Method and system for automatically controlling pH value of reaction kettle | |
| CN112268602B (en) | Ultrasonic water meter detection device and detection method | |
| CN109694422B (en) | Automatic control method for chloroprene rubber polymerization | |
| CN203860432U (en) | Primary tobacco-moistening humidification device for tobacco threshing and redrying | |
| CN207231561U (en) | Measuring device for measuring liquid flow of pipeline | |
| CN210085403U (en) | Intelligent volatile oil extraction device | |
| CN215540903U (en) | Continuous self-control reaction device | |
| CN217465911U (en) | Liquid medium metering device | |
| CN111270090A (en) | High-precision liquid continuous weighing automatic feeding system | |
| CN204362872U (en) | Profit water controller | |
| CN111068599B (en) | Device for preparing 2-acetyl pyrrole | |
| CN210584518U (en) | Automatic water and steam adding control device for water glass static pressure dissolving kettle | |
| CN220057061U (en) | Nickel electrolyte cathode flow regulating device | |
| CN218834513U (en) | Control device for adding catalyst into reaction kettle | |
| CN220019281U (en) | Device for semi-quantitative analysis of tributyl phosphate in tributyl phosphate kerosene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |