CN115430182B - Liquid discharge method and liquid discharge device for suspension resin water mixture - Google Patents
Liquid discharge method and liquid discharge device for suspension resin water mixture Download PDFInfo
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- CN115430182B CN115430182B CN202110625933.XA CN202110625933A CN115430182B CN 115430182 B CN115430182 B CN 115430182B CN 202110625933 A CN202110625933 A CN 202110625933A CN 115430182 B CN115430182 B CN 115430182B
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- 239000007788 liquid Substances 0.000 title claims abstract description 122
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000011347 resin Substances 0.000 title claims abstract description 60
- 229920005989 resin Polymers 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000725 suspension Substances 0.000 title claims abstract description 36
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 242
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 47
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 47
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 46
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 230000001502 supplementing effect Effects 0.000 claims description 28
- 238000011084 recovery Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 238000012800 visualization Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 5
- 230000032798 delamination Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 9
- 230000000007 visual effect Effects 0.000 description 15
- 238000010298 pulverizing process Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000010902 jet-milling Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention belongs to the technical field of polytetrafluoroethylene production, and particularly discloses a liquid discharge method of a suspension resin water mixture, and also discloses a liquid discharge device. The liquid discharge method of the suspension resin water mixture adopts a material conveying system to extract materials from the bottom of a material tank containing the polytetrafluoroethylene suspension resin water mixture and convey the materials into the material tank through the upper part of the material tank, and when the mass percentage content of the polytetrafluoroethylene suspension resin in the conveyed materials in the material conveying system is lower than 5 percent, the material conveying system is closed; and then draining the liquid from the bottom of the material tank through a liquid draining system. The liquid discharge method can effectively avoid discharging a large amount of polytetrafluoroethylene resin materials in the liquid discharge process, greatly reduce the generation of degraded materials and realize clean production.
Description
Technical Field
The invention relates to the technical field of polytetrafluoroethylene production, in particular to a liquid discharge method of a suspension resin water mixture and a liquid discharge device.
Background
Polytetrafluoroethylene (PTFE) resins have excellent chemical stability, corrosion resistance, sealing properties, high lubrication non-tackiness, electrical insulation properties, and good aging resistance, and are currently widely used in the industries of aviation, electronics, chemical industry, machinery, construction, medicine, and the like. The polytetrafluoroethylene resin is mainly divided into dispersion resin and suspension resin according to the preparation process.
The preparation of polytetrafluoroethylene resin by a suspension method usually takes deionized water as a reaction medium, an initiator and an auxiliary agent are added, tetrafluoroethylene is continuously introduced into a reaction kettle in a gas phase form to realize free radical polymerization, and reacted materials are subjected to boiling in high temperature water, wet crushing, washing, dehydration, drying and cooling, and then are subjected to jet milling to prepare various brands of products with different particle sizes. The wet crushing process has strict requirements on the water-material ratio and the material temperature of the materials, and in general, in order to eliminate the influence of the polymeric acid medium on the appearance quality of the product, and improve the production efficiency, part of water in the materials needs to be discharged, the content of polytetrafluoroethylene in the materials is improved, then wet crushing is carried out, and at present, most of water is discharged in a manner of sedimentation liquid discharge in a tank. The stirring of the material tank is stopped for a period of time, the density of the resin in the tank is higher than that of water, but the resin can gather and delaminate at the bottom of the tank and the water surface under the action of surface tension in the water, and then a drain valve is slowly opened at the bottom of the tank to directly drain.
The resin accumulated at the bottom of the tank in the drainage process can flow out along with the medium, namely water. By controlling the opening of the liquid discharge valve, the materials gathered at the bottom of the tank bridge after a period of time to form a water flow channel, and only water discharge and no discharge can be realized at the moment. The materials discharged together with the medium in the liquid discharge process are settled and recovered, and the part of the materials can only be treated as degraded materials. At present, the drainage technology can generate a lot of degraded materials due to unstable operation in the actual production process, waste is caused, the production cost is not controlled, and the environment is polluted. Therefore, it is necessary to improve the drainage process to reduce the generation of degraded materials and improve the production efficiency.
Disclosure of Invention
The invention mainly solves the technical problem of providing a liquid discharge method of a suspension resin water mixture, which can effectively reduce the generation of polytetrafluoroethylene degradation materials and shorten the liquid discharge time.
The invention also provides a liquid discharge device for the suspension resin water mixture.
To solve the above technical problems, in a first aspect, the present invention provides a method for draining a suspension resin water mixture, comprising the steps of:
a material conveying system is adopted to extract materials from the bottom of a material tank containing polytetrafluoroethylene suspension resin water mixture, and the materials are conveyed into the material tank through the upper part of the material tank;
when the mass percentage content of polytetrafluoroethylene suspension resin in the transported materials in the material transporting system is lower than 5%, the material transporting system is closed, and then liquid is discharged from the bottom of the material tank through a liquid discharging system.
Preferably, when the material transported in the material transporting system is water, that is, when the mass percentage content of polytetrafluoroethylene suspension resin in the transported material in the material transporting system is 0%, the material transporting system is closed, and then liquid is discharged from the bottom of the material tank through the liquid discharging system.
Compared with the existing drainage mode, namely, stirring of a material tank is stopped for a period of time, and then a drainage valve is slowly opened at the bottom of the tank to directly drain water. By adopting the liquid discharge method, the material at the bottom in the material tank is bridged to form the water flow channel, so that the polytetrafluoroethylene resin material in the medium water discharged during liquid discharge is little, and no material basically flows out. Compared with the traditional process, the liquid discharge method can effectively avoid discharging a large amount of polytetrafluoroethylene resin materials in the liquid discharge process, greatly reduce the generation of degraded materials, control the production cost and realize clean production. In addition, as the content of polytetrafluoroethylene resin materials in the medium water discharged during liquid discharge is small, the liquid discharge flow can be regulated, and compared with the traditional process, the liquid discharge method can also obviously shorten the liquid discharge time and finish the liquid discharge operation in a shorter time.
Experiments prove that compared with the existing drainage method, the drainage method provided by the invention has the advantages that the wet weight of the polytetrafluoroethylene resin material discharged in the drainage process is only 6% -14% of that of the polytetrafluoroethylene resin material discharged in the existing method, the generation of degraded materials is obviously reduced, the production cost is effectively controlled, and the clean production is realized. In addition, the liquid discharge time is shortened by more than 60 percent compared with the liquid discharge time of the prior method.
As a preferred embodiment of the invention, before a material conveying system is adopted to extract materials from the bottom of a material tank containing polytetrafluoroethylene suspension resin water mixture, the polytetrafluoroethylene suspension resin water mixture in the material tank is cooled to 0-50 ℃, and then stirring is stopped, and standing and layering are carried out.
As a further preferable embodiment of the invention, the polytetrafluoroethylene suspension resin water mixture in the material tank is cooled to 10-30 ℃, and then stirring is stopped; and/or, the standing delamination time is 5-15 minutes, and effectively about 10 minutes.
As a preferred embodiment of the invention, the material conveying system comprises a discharge valve, a conveying pump and a feed valve, wherein the conveying pump is arranged between the discharge valve and the feed valve, the discharge valve is communicated with the bottom of the material tank through a pipeline, the feed valve is communicated with a feed inlet at the upper part of the material tank through a pipeline, and the feed inlet at the upper part of the tank is higher than the material liquid level of the material tank. The material pumped from the bottom of the material tank passes through the discharge valve, is conveyed by the conveying pump, and is returned into the material tank through the feeding valve from the upper part of the material tank, and the polytetrafluoroethylene resin in the material pumped from the bottom of the material tank can float on the upper part of the material tank after being returned to the material tank because the feeding hole at the upper part of the tank is higher than the liquid level of the material in the material tank.
Preferably, the material conveying system is further provided with a visual connection section. The visual connecting section can be made of transparent materials so as to facilitate the observation of materials transmitted in the material transmission system.
Preferably, the transmission pump is a crushing pump, and a water supplementing pipeline is further arranged in front of the crushing pump, namely, a water supplementing pipeline is further arranged on a pipeline between the discharge valve and the crushing pump, and a water supplementing valve is arranged on the water supplementing pipeline. The crushing pump can be a shearing type crushing pump, materials are crushed mainly through mutually nested stator and rotor millstone in the cavity, the granularity of the crushed polytetrafluoroethylene resin materials is reduced, the specific surface area is increased, and the crushed polytetrafluoroethylene resin materials are easier to float on the upper part of the material tank after returning to the material tank.
As a preferred embodiment of the present invention, the drain system includes a drain valve connected to a bottom of the material tank by a pipe, and a recovery tank. Medium water discharged from the bottom of the material tank enters the recovery tank for recovery after passing through the liquid discharge valve.
Preferably, the drainage system is provided with a visual connection section. The visualization connection section may be made of a transparent material to facilitate the observation of the medium being drained in the drainage system.
In a second aspect, the invention also provides a liquid discharge device for suspending a resin water mixture, which comprises a material tank, a material conveying system and a liquid discharge system, wherein the material conveying system and the liquid discharge system are connected with the material tank;
the material conveying system comprises a discharge valve, a conveying pump and a feed valve, wherein the conveying pump is arranged between the discharge valve and the feed valve, the discharge valve is communicated with the bottom of the material tank through a pipeline, the feed valve is communicated with a feed inlet at the upper part of the material tank through a pipeline, and the feed inlet at the upper part of the tank is higher than the material liquid level of the material tank;
the liquid draining system comprises a liquid draining valve and a recovery groove, and the liquid draining valve is connected with the bottom of the material groove through a pipeline.
In a preferred embodiment of the present invention, the conveying pump is a pulverizing pump, and a water supplementing pipe is further disposed before the pulverizing pump, that is, a water supplementing pipe is further disposed on a pipe between the discharge valve and the pulverizing pump, and a water supplementing valve is disposed on the water supplementing pipe. The crushing pump can be a shearing type crushing pump, materials are crushed mainly through mutually nested stator and rotor millstone in the cavity, the granularity of the crushed polytetrafluoroethylene resin materials is reduced, the specific surface area is increased, and the crushed polytetrafluoroethylene resin materials are easier to float on the upper part of the material tank after returning to the material tank.
Preferably, the material conveying system is provided with a visual connecting section; and/or the liquid draining system is provided with a visual connecting section. The visualization attachment section may be made of a transparent material, such as transparent plastic or glass, to facilitate viewing of the internally conveyed medium or material.
The liquid discharge method is realized by the liquid discharge device.
When the liquid discharge device is adopted for liquid discharge, firstly, the temperature of the water mixture in the material tank is reduced to 0-50 ℃, then stirring is stopped, and the mixture is kept stand for 10 minutes;
then a feed valve at the top of the material tank is opened, then a water supplementing valve on an inlet pipe of a crushing pump is opened, the crushing pump is started, a discharge valve is slowly and fully opened, and materials at the bottom of the material tank are crushed and conveyed to the upper part in the material tank;
the polytetrafluoroethylene resin content in the material to be returned to the upper part of the material tank is very low, preferably 0%, namely the returned material is all water, at the moment, the bottom material in the material tank is bridged to form a water flow channel, at the moment, the material conveying system is closed, namely the crushing pump is stopped, the water supplementing valve and the discharging valve are closed, then the discharging valve is opened to discharge liquid, and the polytetrafluoroethylene resin material in medium water discharged during the liquid discharge is very little;
and after the liquid level in the material tank is reduced to the low limit, closing the liquid discharge valve, and finishing the water discharge.
The liquid discharging device for the suspension resin water mixture is designed for the layered polytetrafluoroethylene suspension resin liquid discharging with a certain water-material ratio in the container, can effectively avoid bringing a large amount of polytetrafluoroethylene resin materials when medium water is discharged, and can effectively reduce the generation of polytetrafluoroethylene degradation materials.
Compared with the existing device, the liquid discharging device has the advantages that only a material conveying system is needed to be added, and the improvement cost is low; the liquid discharge device has the advantages of simple operation and strong repeatability, and can realize remote control.
Drawings
FIG. 1 is a schematic diagram of a liquid discharge device for suspending a resin-water mixture according to the present invention;
in the figure: 1-breather valve, 2-material groove, 3-flowing back valve, 4-feed valve, 5-bleeder valve, 6-moisturizing valve, 7-transfer pump, 8-visual linkage segment, 9-recovery tank.
Detailed Description
The technical scheme of the invention is described in detail below.
Example 1
The embodiment provides a liquid discharge method of a suspension resin water mixture, which comprises the following steps:
firstly, cooling the polytetrafluoroethylene suspension resin water mixture in the material tank to 0-50 ℃, preferably to 10-30 ℃, stopping stirring, standing for layering for 5-15 minutes, preferably about 10 minutes;
the material conveying system is adopted to extract materials from the bottom of a material tank containing polytetrafluoroethylene suspension resin water mixture and convey the materials into the material tank through the upper part of the material tank, when the mass percentage content of polytetrafluoroethylene suspension resin in the conveyed materials in the material conveying system is lower than 5%, the materials conveyed in the material conveying system are preferably all water, at the moment, the materials at the bottom in the material tank are bridged to form a water flow channel, no materials flow out or only very little materials are discharged along with medium water, and at the moment, the material conveying system is closed;
then the liquid is discharged from the bottom of the material tank through a liquid discharge system, namely medium water is discharged.
As shown in fig. 1, the material conveying system comprises a discharge valve 5, a conveying pump 7 and a feed valve 4 which are sequentially connected in series, wherein the discharge valve 5 is communicated with the bottom of the material tank 2 through a pipeline, the feed valve 4 is communicated with a feed inlet at the upper part of the material tank 2 through a pipeline, and the feed inlet at the upper part of the material tank is higher than the liquid level of the material in the material tank 2.
The material transfer system is also provided with a visual connection section 8.
As a specific implementation mode, a visual connecting section 8 is arranged on a communicating pipeline between the discharge valve 5 and the bottom of the material tank 2, and the visual connecting section 8 can be made of transparent plastic or glass materials, so that the condition of materials in the pipeline can be conveniently observed, whether the materials of the discharge pipe flow out or not can be judged, and the materials can be observed manually or through monitoring videos.
As a specific embodiment, the conveying pump 7 is a pulverizing pump, and a water supplementing pipeline is further arranged in front of the pulverizing pump, namely, a water supplementing pipeline is arranged between the discharge valve 5 and the pulverizing pump, and a water supplementing valve 6 is arranged on the water supplementing pipeline. Preferably, the crushing pump is a shearing crushing pump, and materials are crushed mainly through stator and rotor millstones which are mutually nested in the cavity.
The liquid discharge system comprises a liquid discharge valve 3 and a recovery tank 9, wherein the liquid discharge valve 3 is connected with the tank bottom of the material tank 2 through a pipeline. When the liquid is discharged from the bottom of the material tank through the liquid discharge system, the liquid discharge valve 3 is opened, and discharged medium water enters the recovery tank 9.
The liquid discharge system is also provided with a visual connecting section 8, which is also convenient for observing the condition of the materials in the pipeline, and the visual connecting section 8 is preferably arranged on the connecting pipeline between the liquid discharge valve 3 and the bottom of the material tank 2.
Before flowing back, will rest the material of back gathering in material inslot bottom through smashing the pump earlier and carry back to the material inslot through material inslot upper portion again, when gathering the material bridging of inslot bottom and forming a rivers passageway, and after no material flows out, carry out the drainage again, can avoid traditional technology in the flowing back in-process with a large amount of material discharge's possibility, greatly reduced the production of degrading the material, realized clean production.
Example 2
The embodiment provides a liquid discharging device for a suspension resin water mixture, which is shown in fig. 1, and comprises a material tank 2, a material conveying system and a liquid discharging system, wherein the material conveying system and the liquid discharging system are connected with the material tank 2, and a breather valve 1 is arranged at the top of the material tank 2.
The material conveying system comprises a discharge valve 5, a conveying pump 7 and a feed valve 4 which are sequentially connected in series, wherein the discharge valve 5 is communicated with the bottom of the material tank 2 through a pipeline, the feed valve 4 is communicated with a feed inlet at the upper part of the material tank 2 through a pipeline, and the feed inlet at the upper part of the material tank is higher than the material liquid level of the material tank.
The liquid discharge system comprises a liquid discharge valve 3 and a recovery tank 9, wherein the liquid discharge valve 3 is connected with the tank bottom of the material tank 2 through a pipeline.
As a specific embodiment, the conveying pump 7 is a pulverizing pump, and a water supplementing pipeline is further arranged in front of the pulverizing pump, namely, a water supplementing pipeline is arranged between the discharge valve 5 and the pulverizing pump, and a water supplementing valve 6 is arranged on the water supplementing pipeline. Preferably, the crushing pump is a shearing crushing pump, and materials are crushed mainly through stator and rotor millstones which are mutually nested in the cavity.
The material transfer system is also provided with a visual connection section 8.
As a specific implementation mode, a visual connecting section 8 is arranged on a communicating pipeline between the discharge valve 5 and the bottom of the material tank 2, and the visual connecting section 8 can be made of transparent plastic or glass materials, so that the condition of materials in the pipeline can be conveniently observed, whether the materials of the discharge pipe flow out or not can be judged, and the materials can be observed manually or through monitoring videos.
The liquid discharge system comprises a liquid discharge valve 3 and a recovery tank 9, wherein the liquid discharge valve 3 is connected with the tank bottom of the material tank 2 through a pipeline. When the liquid is discharged from the bottom of the material tank through the liquid discharge system, the liquid discharge valve 3 is opened, and discharged medium water enters the recovery tank 9.
The liquid discharge system is also provided with a visual connecting section 8, which is also convenient for observing the condition of the materials in the pipeline, and the visual connecting section 8 is preferably arranged on the connecting pipeline between the liquid discharge valve 3 and the bottom of the material tank 2.
In this embodiment, all valves and the pulverizing pump are remotely controlled to open and close.
In the existing production, a liquid discharge pipeline is arranged at the bottom of the material tank 2, and the liquid discharge pipeline is directly connected with a liquid discharge system. The liquid discharge device of the embodiment can be obtained by simply modifying the liquid discharge device, namely, a three-way valve is arranged on a liquid discharge pipeline, one outlet is communicated with a liquid discharge system, and the other outlet is communicated with a material conveying system.
Tests were carried out during actual production using the liquid discharge apparatus provided in example 2 and the liquid discharge method provided in example 1, and are specifically shown in the following experimental examples.
Experimental example 1
And cooling the polytetrafluoroethylene suspension resin water mixture in the material tank 2 to 25 ℃, stopping stirring, and standing for 10 minutes, wherein the material level in the material tank is 1600mm.
The feeding valve 4 at the top of the material tank 2 is opened, the water supplementing valve 6 of the inlet pipe of the crushing pump is opened, the crushing pump is started, the discharging valve 5 is slowly fully opened, and materials at the bottom of the material tank 2 are crushed and conveyed into the material tank 2 through the upper part of the material tank. After the medium flowing out of the discharging pipe is water, stopping the crushing pump, and closing the water supplementing valve 6 and the discharging valve 5.
And opening the liquid discharge valve 3 by a certain opening degree to discharge liquid, and closing the liquid discharge valve 3 when the liquid level in the material tank 2 is reduced to 1000mm and reaches the liquid discharge height requirement. The draining time was 25 minutes, and the wet weight of the discharged polytetrafluoroethylene resin material was 1.2Kg.
Experimental example 2
And cooling the polytetrafluoroethylene suspension resin water mixture in the material tank 2 to 25 ℃, stopping stirring, and standing for 10 minutes, wherein the material level in the material tank is 1600mm.
The feeding valve 4 at the top of the material tank 2 is opened, the water supplementing valve 6 of the inlet pipe of the crushing pump is opened, the crushing pump is started, the discharging valve 5 is slowly fully opened, and materials at the bottom of the material tank 2 are crushed and conveyed into the material tank 2 through the upper part of the material tank. After the medium flowing out of the discharging pipe is water, stopping the crushing pump, and closing the water supplementing valve 6 and the discharging valve 5.
The drain valve 3 is opened by a certain opening degree to drain. When the liquid level in the material tank 2 is reduced to 1000mm, the liquid discharge height requirement is met, and the liquid discharge valve 3 is closed. The draining time was 20 minutes, and the wet weight of the discharged polytetrafluoroethylene resin material was 2.4Kg.
A comparative example is provided below, which is different from experimental example 1 and experimental example 2 in that comparative example 1 adopts the existing drainage method, i.e., drainage is directly performed after standing.
Comparative example 1
And cooling the polytetrafluoroethylene suspension resin water mixture in the material tank 2 to 25 ℃, stopping stirring, and standing for 10 minutes, wherein the material level in the tank is 1600mm.
And closing the discharge valve 5, slowly opening the liquid discharge valve 3 by a certain opening degree to discharge liquid, and closing the liquid discharge valve when the liquid level in the material tank 2 is reduced to 1000mm and reaches the liquid discharge height requirement. The draining time was 70 minutes, and the wet weight of the discharged polytetrafluoroethylene resin material was 18Kg.
As can be seen from comparison of experimental example 1, experimental example 2 and comparative example 1, the liquid discharge device and the liquid discharge method of the invention can obviously shorten the liquid discharge time of the polytetrafluoroethylene suspension resin water mixture and obviously reduce the generation of degraded materials.
While the invention has been described in detail in the foregoing general description, embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. A method of draining a suspension resin water mixture, comprising the steps of:
a material conveying system is adopted to extract materials from the bottom of a material tank containing polytetrafluoroethylene suspension resin water mixture, and the materials are conveyed into the material tank through the upper part of the material tank;
when the mass percentage content of polytetrafluoroethylene suspension resin in the transported materials in the material transporting system is lower than 5%, closing the material transporting system, and then draining liquid from the bottom of the material tank through a liquid draining system;
before the material conveying system is adopted to extract materials from the bottom of a material tank containing polytetrafluoroethylene suspension resin water mixture, cooling the polytetrafluoroethylene suspension resin water mixture in the material tank to 0-50 ℃, stopping stirring, standing and layering;
the material conveying system comprises a discharge valve, a conveying pump and a feed valve, wherein the discharge valve is communicated with the bottom of the material tank through a pipeline, the feed valve is communicated with a feed inlet at the upper part of the material tank through a pipeline, and the feed inlet at the upper part of the tank is higher than the material liquid level of the material tank;
the conveying pump is a crushing pump, a water supplementing pipeline is further arranged on a pipeline between the discharging valve and the crushing pump, and a water supplementing valve is arranged on the water supplementing pipeline.
2. The liquid discharge method according to claim 1, wherein the polytetrafluoroethylene suspension resin water mixture in the material tank is cooled to 10-30 ℃, and then stirring is stopped; and/or, the standing delamination time is 5-15 minutes.
3. The drainage method of claim 1, wherein the material transfer system is provided with a visualization connection section.
4. The drainage method according to claim 1, wherein the drainage system comprises a drainage valve and a recovery tank, and the drainage valve is connected with the bottom of the tank of the material tank through a pipe.
5. The drainage method of claim 4, wherein the drainage system is provided with a visualization connection.
6. The liquid discharge device for the suspension resin water mixture is characterized by comprising a material tank, and a material conveying system and a liquid discharge system which are connected with the material tank;
the material conveying system comprises a discharge valve, a conveying pump and a feed valve, wherein the discharge valve is communicated with the bottom of the material tank through a pipeline, the feed valve is communicated with a feed inlet at the upper part of the material tank through a pipeline, and the feed inlet at the upper part of the tank is higher than the material liquid level of the material tank;
the liquid draining system comprises a liquid draining valve and a recovery tank, and the liquid draining valve is connected with the bottom of the material tank through a pipeline;
the conveying pump is a crushing pump, a water supplementing pipeline is further arranged on a pipeline between the discharging valve and the crushing pump, and a water supplementing valve is arranged on the water supplementing pipeline.
7. The drainage device of claim 6, wherein the material transfer system is provided with a visualization connection section.
8. The drain device according to claim 6, wherein the drain system is provided with a visualization connection section.
9. The liquid discharge method according to any one of claims 1 to 5 is achieved by the liquid discharge apparatus according to any one of claims 6 to 8.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203221A (en) * | 1996-12-16 | 1998-12-30 | 株式会社日本触媒 | Process for production of carboxylic acid ester and resin-separating tank used therein |
| JP2005021816A (en) * | 2003-07-03 | 2005-01-27 | Matsushita Electric Ind Co Ltd | Foreign substances separating apparatus |
| WO2006087575A2 (en) * | 2005-02-18 | 2006-08-24 | Conder Products Limited | Improved oil/water separator |
| CN103611336A (en) * | 2013-11-19 | 2014-03-05 | 湖南省湘衡盐化有限责任公司 | Device and method for reducing suspended matters in refined brine |
| CN104437805A (en) * | 2014-12-02 | 2015-03-25 | 中昊晨光化工研究院有限公司 | Crushing equipment and crushing method of polytetrafluoroethylene resin with suspension method |
| CN204293995U (en) * | 2014-11-14 | 2015-04-29 | 浙江巨圣氟化学有限公司 | A kind ofly be applied to the separation knockouts preparing dispersed polytetrafluoroethylresin |
| CN204637670U (en) * | 2015-04-30 | 2015-09-16 | 湖南兴瑞新材料研究发展有限公司 | Sedimentation recycling device |
| CN204865099U (en) * | 2015-07-07 | 2015-12-16 | 赵龙 | Drawing liquid device |
| KR20170090827A (en) * | 2016-01-29 | 2017-08-08 | 주식회사 에코바이론 | Slurry Circulation System |
| CN107140730A (en) * | 2017-07-21 | 2017-09-08 | 石家庄顺时科技有限公司 | A kind of emergent ancillary equipment of bioanalysis sewage disposal system activated sludge and method |
| CN207886754U (en) * | 2017-12-29 | 2018-09-21 | 贵州汉方药业有限公司 | A kind of Alcohol-settling tank convenient for slagging tap |
| KR102157572B1 (en) * | 2020-04-29 | 2020-09-18 | (주)하나엔텍 | Scum and sediment removal apparatus for dust collecting deodorizer |
| CN212141751U (en) * | 2020-04-24 | 2020-12-15 | 陕西泓硕工程科技有限公司 | Integrated device for treating sewage containing high suspended solids |
| CN112111031A (en) * | 2019-06-19 | 2020-12-22 | 中昊晨光化工研究院有限公司 | Recovery device and recovery method for preparing polytetrafluoroethylene resin by suspension method |
-
2021
- 2021-06-04 CN CN202110625933.XA patent/CN115430182B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203221A (en) * | 1996-12-16 | 1998-12-30 | 株式会社日本触媒 | Process for production of carboxylic acid ester and resin-separating tank used therein |
| JP2005021816A (en) * | 2003-07-03 | 2005-01-27 | Matsushita Electric Ind Co Ltd | Foreign substances separating apparatus |
| WO2006087575A2 (en) * | 2005-02-18 | 2006-08-24 | Conder Products Limited | Improved oil/water separator |
| CN103611336A (en) * | 2013-11-19 | 2014-03-05 | 湖南省湘衡盐化有限责任公司 | Device and method for reducing suspended matters in refined brine |
| CN204293995U (en) * | 2014-11-14 | 2015-04-29 | 浙江巨圣氟化学有限公司 | A kind ofly be applied to the separation knockouts preparing dispersed polytetrafluoroethylresin |
| CN104437805A (en) * | 2014-12-02 | 2015-03-25 | 中昊晨光化工研究院有限公司 | Crushing equipment and crushing method of polytetrafluoroethylene resin with suspension method |
| CN204637670U (en) * | 2015-04-30 | 2015-09-16 | 湖南兴瑞新材料研究发展有限公司 | Sedimentation recycling device |
| CN204865099U (en) * | 2015-07-07 | 2015-12-16 | 赵龙 | Drawing liquid device |
| KR20170090827A (en) * | 2016-01-29 | 2017-08-08 | 주식회사 에코바이론 | Slurry Circulation System |
| CN107140730A (en) * | 2017-07-21 | 2017-09-08 | 石家庄顺时科技有限公司 | A kind of emergent ancillary equipment of bioanalysis sewage disposal system activated sludge and method |
| CN207886754U (en) * | 2017-12-29 | 2018-09-21 | 贵州汉方药业有限公司 | A kind of Alcohol-settling tank convenient for slagging tap |
| CN112111031A (en) * | 2019-06-19 | 2020-12-22 | 中昊晨光化工研究院有限公司 | Recovery device and recovery method for preparing polytetrafluoroethylene resin by suspension method |
| CN212141751U (en) * | 2020-04-24 | 2020-12-15 | 陕西泓硕工程科技有限公司 | Integrated device for treating sewage containing high suspended solids |
| KR102157572B1 (en) * | 2020-04-29 | 2020-09-18 | (주)하나엔텍 | Scum and sediment removal apparatus for dust collecting deodorizer |
Non-Patent Citations (1)
| Title |
|---|
| 聚四氟乙烯悬浮树脂粉碎影响因素研究;张鹏;钱庆东;李苏桐;诸天庆;郑宙飞;;化工生产与技术(第04期);7-8+21-23 * |
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