CN220802338U - Impurity filtering system for polyester regeneration process - Google Patents
Impurity filtering system for polyester regeneration process Download PDFInfo
- Publication number
- CN220802338U CN220802338U CN202321489886.1U CN202321489886U CN220802338U CN 220802338 U CN220802338 U CN 220802338U CN 202321489886 U CN202321489886 U CN 202321489886U CN 220802338 U CN220802338 U CN 220802338U
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- Prior art keywords
- filter
- tank
- pipeline
- filtering system
- impurity filtering
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- 239000012535 impurity Substances 0.000 title claims abstract description 44
- 238000001914 filtration Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 17
- 229920000728 polyester Polymers 0.000 title claims description 17
- 230000008569 process Effects 0.000 title claims description 17
- 230000008929 regeneration Effects 0.000 title claims description 13
- 238000011069 regeneration method Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000001556 precipitation Methods 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000004062 sedimentation Methods 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims 2
- 239000013049 sediment Substances 0.000 abstract description 12
- 238000004140 cleaning Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 210000005056 cell body Anatomy 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The impurity filtering system comprises a material conveying pump, a filter, a main material conveying pipe, a precipitation tank, a switching valve and a desilting tank, wherein the main material conveying pipe is connected to the upper part of the precipitation tank, a drain hole at the bottom of the precipitation tank is connected with the desilting tank through a pipeline, and the switching valve is arranged on the pipeline; the filter feeding end is connected to the side wall of the settling tank through a pipeline, and the material conveying pump is connected with the filter discharging end through a pipeline. The scheme can effectively alleviate the blockage problem of the pipeline filter, can lead the filter cleaning period to be longer than the shutdown maintenance period, and basically eliminates the failure shutdown caused by the blockage of the filter; the sediment at the bottom of the settling tank can be cleaned in time, so that the utilization rate of the settling tank is improved, the discharging time of the upper-level reaction kettle is shortened, and the production efficiency is improved; a group of standby settling tanks can be reduced, equipment investment is reduced, and economic benefit is improved; the materials available in the filter residue can be further recovered, and the resource utilization rate is improved.
Description
Technical Field
The utility model belongs to the technical field of chemical fiber production facility, concretely relates to dacron polyester regeneration process impurity filtration system.
Background
The polyester regeneration system takes waste textiles, clothing factory leftover materials and the like as initial raw materials, reduces the waste polyester materials into chemical micromolecules through a unique chemical decomposition technology, and regenerates the novel polyester fiber with high quality, multifunction, traceability and permanent circularity through high-precision technical means such as rectification, filtration, purification, polymerization and the like.
However, as the recycled waste textiles contain a plurality of impurities such as cotton, hemp and wool and metal, sand and stone, the impurities cannot participate in the reaction, wherein the cotton, hemp and wool easily block the filter, and hard objects such as metal, sand and stone easily damage the impeller of the pump. At present, the filter has higher blocking frequency, and the filter needs to be insulated, so that the disassembly and the cleaning are very complicated, a device capable of removing internal impurities on line is needed to solve the problem, and meanwhile, outlet impurities are needed to be reduced as much as possible, and the blocking of the filter is delayed; the impurity with higher density is easy to deposit at the bottom of the storage tank, after a period of stacking, the practical usable volume of the storage tank is obviously reduced, so that the discharge time of the upper-level reaction kettle is increased, the whole production process is influenced, the production efficiency is reduced, a group of standby devices are arranged for switching, and the cleaning is required to be stopped for three months, but the impurity can be solidified after the deposition time is overlong, the cleaning difficulty is greatly increased, the cleaning time is long, the equipment is slow to cool down, potential safety hazards exist, each cleaning process generates abolish the contract tons, the BHET content in 40 tons is higher, in the prior art, a standby storage tank is arranged on site for switching, thus greatly increasing the investment cost, reducing the economic benefit, and even so, the cleaning process is very complicated, not only wastes time, but also wastes a lot of available materials.
Disclosure of utility model
The utility model aims to provide an impurity filtering system for a polyester regeneration process, which aims to at least solve all or part of the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The impurity filtering system comprises a material conveying pump, a filter, a main material conveying pipe, a precipitation tank, a switching valve and a desilting tank, wherein the main material conveying pipe is connected to the upper part of the precipitation tank, a drain hole at the bottom of the precipitation tank is connected with the desilting tank through a pipeline, and the switching valve is arranged on the pipeline; the filter feeding end is connected to the side wall of the settling tank through a pipeline, and the material conveying pump is connected with the filter discharging end through a pipeline. In the prior art scheme, the tank body at the position of the precipitation tank is internally provided with the stirrer, impurity materials in the tank body are stirred, the impurity materials are uniformly discharged from the bottom of the pipe body into the filter for filtering, and in the scheme, the impurity materials are in the precipitation tank, the stirrer is not arranged in the precipitation tank, the impurity materials are simply precipitated in the precipitation tank, supernatant fluid is filtered under the action of the material conveying pump through the filter connected to the side wall of the precipitation tank, liquid is pumped away for subsequent processing operation, filter residues are reserved in the filter, and the impurity content is greatly reduced due to the supernatant fluid only, so that the blocking condition of the filter can be slowed down, and the overhauling and cleaning period of the filter is prolonged. The filter may be a basket filter.
In an alternative optimization mode, the number of the filters is two, and the two filters are connected in parallel. The valves are independently arranged at two ends of the filters which are connected in parallel, the filters can be controlled to be on-line independently or jointly on-line through opening and closing the valves, for example, one of the filters is blocked, the valves in front of and behind the filter can be closed, the filter is off-line, cleaning and maintenance are carried out, meanwhile, the other filter works on line, the operation of the whole system is not influenced, and the blocking of the filter can be further delayed through the scheme. It should be noted that, in order to ensure that the filter is easy to replace or maintain when it is blocked, even if a group of filters is used, valves are required to be respectively installed before and after the filters.
In an alternative optimization, the filtration is an automatic doctor blade filter. One or two groups of filters mentioned in the scheme can be used, the original filter is replaced by an automatic scraper filter with the filtering precision of 2mm, the working temperature is 180 ℃, the treatment capacity is 8-12m 3/h, the filter element can be automatically cleaned, the blocking condition is slowed down, and the cleaning period is prolonged; when the automatic scraper filter specifically works, liquid flows in from a feed end, flows outwards from the inner surface of the filter element, the lower end of the filter element is connected with a discharge end, the liquid is extracted from the discharge end, and impurity particles are intercepted on the inner surface of the filter element; when a certain amount of impurities are intercepted on the surface of the filter element, a cleaning program is started at regular time or according to a set pressure difference, a speed reducing motor or an air cylinder drives a scraping blade attached to the surface of the filter element to rotate, impurities on the inner surface of the filter element are scraped, the impurities leave the surface of the filter element along a scraper and fall into the bottom of the filter along with descending liquid, a rotary sweeping plate sweeps the bottom heavy impurities into a dirt accumulation cavity, the impurities are accumulated in the dirt accumulation cavity and the bottom of the filter, a drain valve is opened at regular time, the liquid and impurity filter residues are discharged from a drain outlet, and the filter can be recycled.
In an optional optimization mode, the automatic scraper filter further comprises a screw press, a drain outlet of the automatic scraper filter is connected with the screw press, and the screw press is provided with a filter residue outlet and a filtrate outlet. On the basis of the scheme, the filtrate can be further extracted through the screw squeezer, so that the utilization rate of materials is improved; the dewatering process of the screw press is in two stages. In the initial stage, the spiral auger is used for dehydration, the spiral auger is divided into three sections, namely a transmission section, a compression section and a discharge section, the transmission section ensures that materials stably enter equipment, the screw pitch and the spiral inner diameter of a spiral blade of the dehydration section are gradually reduced, so that the transmission space is gradually reduced, and the gradually reduced transmission space forms gradually increased pressure on the materials to force the volume of the materials to be reduced and the water is squeezed; in the second stage, a material blocking device is used for dehydration, when materials enter a discharging section of a spiral auger, the spiral auger can apply axial thrust to the materials to push the materials out of a discharging hole, and meanwhile, the material blocking device pressurized by an air pressure device can apply reverse acting force to the materials to be pushed out, so that extrusion force is formed to carry out two-stage dehydration on the materials; the filter residues from the automatic scraper filter pass through a screw press, and the filtrate passes through a filtrate outlet and flows to a lower collecting tank and is pumped to a rear-end storage tank for treatment; and the squeezed filter residues are discharged out of the system through a filter residue discharge outlet.
In an optional optimization mode, the bottom of the precipitation tank is a 45-degree conical sealing head. The 45-degree conical sealing head is more beneficial to the falling of impurity materials, ensures that impurities are not deposited on the bottom of the precipitation tank for a long time, and prevents solidification of the impurities.
In an optional optimization mode, the desilting tank comprises a top cover, quick clamps, a tank body and a tray, wherein the upper portion of the tank body is open, the plurality of quick clamps are arranged on the periphery of the upper portion of the tank body, the tray is arranged at the bottom of the tank body, the top cover is fixed at the top of the tank body through the quick clamps, the top cover is connected with the sedimentation tank through a pipeline, and a switching valve is arranged on the pipeline. The cell body is the square groove, quick clamp makes things convenient for the dismantlement and the installation of lid, the tray can make things convenient for fork truck or hydraulic vehicle transportation to handle, opens the lid and conveniently clear up inside impurity.
In an optional optimization mode, the vacuum pump further comprises a vacuum suction port and a vacuum suction pump, wherein the vacuum suction port is arranged on the top cover and is connected with the vacuum suction pump through a pipeline. Through the negative pressure suction mode, the sediment at the bottom of the sedimentation tank can be smoothly discharged into the sediment removal tank.
In an alternative optimization mode, the device further comprises a nitrogen filling pipe, and the nitrogen filling pipe is connected to the upper portion of the settling tank. The scheme is the preferred scheme, on the basis of the scheme, specific operation mode is, through the pressurization in nitrogen gas filling pipe to the precipitation tank, increase discharge pressure, then open the ooff valve, open the vacuum suction pump, increase negative pressure suction, help precipitation tank bottom sediment is discharged into in the desilting jar, close the ooff valve, wait to remove the interior material cooling back of desilting jar and change the desilting jar, and can clear up the desilting jar that gets off so that use next time, impurity in the desilting jar still can be filtered again according to the circumstances, the utilization ratio of material is improved as far as possible.
In an alternative optimization mode, the average inner diameter of the drain hole at the bottom of the sedimentation tank is not smaller than DN250.DN250 means that the inner diameter of the pipeline is 250mm, the inner diameter of the pipeline of the drain hole at the bottom of the sedimentation tank is not less than 250mm, and the smooth discharge of impurity sludge can be effectively ensured.
In an optional optimization mode, two desilting tanks are provided. The scheme can be that two desilting tanks are connected through a pipeline, or two tank bodies are arranged according to the situation, the tank bodies are respectively and independently provided with a quick clamp and a tray, and the tank bodies are directly replaced when the tank bodies are replaced. The tank body in the scheme can be configured according to the production capacity of equipment, and the number of the tank body is not less than one.
Compared with the prior art, the utility model has the beneficial effects that:
The scheme can effectively alleviate the blockage problem of the pipeline filter, can lead the filter cleaning period to be longer than the shutdown maintenance period, and basically eliminates the failure shutdown caused by the blockage of the filter; the sediment at the bottom of the settling tank can be cleaned in time, so that the utilization rate of the settling tank is improved, the discharging time of the upper-level reaction kettle is shortened, and the production efficiency is improved; a group of standby settling tanks can be reduced, equipment investment is reduced, and economic benefit is improved; the materials available in the filter residue can be further recovered, and the resource utilization rate is improved.
Drawings
FIG. 1 is a diagram of an impurity filtering system in the regeneration process of polyester;
FIG. 2 is a structural view of the desilting tank of the present utility model.
In the figure:
1. A material conveying pump 2, a filter 3, a nitrogen filling pipe 4, a main material conveying pipe 5, a sedimentation tank 6, a switching valve 7, a vacuumizing pipe 8, a desilting tank 9, a screw press 10, a filter residue discharge port 11, a filtrate discharge port 12 and a vacuum suction pump;
8-1 parts of a cover, 8-2 parts of a quick clamp, 8-3 parts of a groove body, 8-4 parts of a tray, 8-5 parts of a vacuumizing port.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-2:
Example 1:
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The impurity filtering system comprises a material conveying pump 1, a filter 2, a main material conveying pipe 4, a precipitation tank 5, a switching valve 6 and a desilting tank 8, wherein the main material conveying pipe 4 is connected to the upper part of the precipitation tank 5, a drain hole at the bottom of the precipitation tank 5 is connected with the desilting tank 8 through a pipeline, and the switching valve 6 is arranged on the pipeline; the feeding end of the filter 2 is connected to the side wall of the precipitation tank 5 through a pipeline, and the material conveying pump 1 is connected with the discharging end of the filter 2 through a pipeline.
Example 2:
On the basis of embodiment 1, the number of the filters 2 is two, and the two filters 2 are connected in parallel. The filter 2 is an automatic doctor filter.
Example 3:
On the basis of embodiment 2, the automatic scraper filter further comprises a screw press 9, wherein a drain outlet of the automatic scraper filter is connected with the screw press 9, and the screw press 9 is provided with a filter residue outlet 10 and a filter filtrate outlet 11.
Example 4:
on the basis of the embodiment 1, the bottom of the precipitation tank 5 is a 45-degree conical seal head.
Example 5:
On the basis of embodiment 3, remove silt jar 8 includes top cap 8-1, quick clamp 8-2, cell body 8-3, tray 8-4, cell body 8-3 upper portion opening, and be equipped with a plurality of quick clamps 8-2 around its upper portion, cell body 8-3 bottom sets up tray 8-4, and top cap 8-1 passes through quick clamp 8-2 to be fixed at cell body 8-3 top, and top cap 8-1 passes through the pipe connection with precipitation tank 5, sets up ooff valve 6 on the pipeline, remove silt jar 8 is two.
Example 6:
On the basis of the embodiment 5, the vacuum pump further comprises a vacuum suction port 8-5 and a vacuum suction pump 12, wherein the vacuum suction port 8-5 is arranged on the top cover 8-1, and the vacuum suction port 8-5 is connected with the vacuum suction pump 12 through a pipeline. And the nitrogen filling pipe 3 is connected to the upper part of the sedimentation tank 5.
Example 7:
On the basis of examples 1-6, the average internal diameter of the drain at the bottom of the precipitation tank 5 is not less than DN250.
The above embodiments are only exemplary combinations of the present embodiments, and the embodiments described in the embodiments may be arbitrarily combined without departing from the scope of the present embodiments.
The working mode is as follows: taking example 6 as an example, the upper-level reaction kettle discharges impurity materials into a precipitation tank 5 through a main material conveying pipe 4, the impurity materials are simply precipitated in the precipitation tank, supernatant liquid is filtered under the action of a material conveying pump 1 through an automatic scraper filter connected to the side wall of the precipitation tank 5, liquid is pumped away for subsequent processing operation, filter residues are left in the filter, filter residues in the automatic scraper filter are transferred into a screw press 9 and are separated into filter residues and filtrate, and the filter residues are discharged through a filter residue discharge port 10 and a filtrate discharge port 11; the sediment material in the sedimentation tank 5 is pressurized in the sedimentation tank 5 through the nitrogen gas filling pipe 3, the discharge pressure is increased, then the switch valve 6 is opened, the vacuum suction pump 12 is opened, the negative pressure suction force is increased, after sediment at the bottom of the sedimentation tank 5 is discharged into the sediment removal tank 8, the switch valve 6 is closed, the sediment removal tank 8 is replaced after the material in the sediment removal tank 8 is cooled, the replaced sediment removal tank 8 can be cleaned for the next use, impurities in the sediment removal tank 8 can be filtered again according to the situation, and the utilization rate of the material is improved as much as possible.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The impurity filtering system for the polyester regeneration process is characterized by comprising a material conveying pump (1), a filter (2), a main material conveying pipe (4), a precipitation tank (5), a switching valve (6) and a desilting tank (8), wherein the main material conveying pipe (4) is connected to the upper part of the precipitation tank (5), a drain hole at the bottom of the precipitation tank (5) is connected with the desilting tank (8) through a pipeline, and the switching valve (6) is arranged on the pipeline; the feeding end of the filter (2) is connected to the side wall of the precipitation tank (5) through a pipeline, and the material conveying pump (1) is connected with the discharging end of the filter (2) through a pipeline;
The silt removing tank (8) comprises a top cover (8-1), a quick clamp (8-2), a tank body (8-3) and a tray (8-4), wherein the upper portion of the tank body (8-3) is provided with an opening, the periphery of the upper portion of the tank body is provided with a plurality of quick clamps (8-2), the tray (8-4) is arranged at the bottom of the tank body (8-3), the top cover (8-1) is fixed at the top of the tank body (8-3) through the quick clamp (8-2), the top cover (8-1) is connected with the sedimentation tank (5) through a pipeline, and a switching valve (6) is arranged on the pipeline.
2. The impurity filtering system for polyester regeneration process according to claim 1, wherein the number of the filters (2) is two, and the two filters (2) are connected in parallel.
3. A polyester recycling process impurity filtering system according to claim 1 or 2, characterized in that said filter (2) is an automatic doctor filter.
4. A polyester recycling process impurity filtering system according to claim 3, further comprising a screw press (9), wherein the drain outlet of the automatic scraper filter is connected with the screw press (9), and the screw press (9) is provided with a filter residue outlet (10) and a filtrate outlet (11).
5. The impurity filtering system for the polyester regeneration process according to claim 1, wherein the bottom of the precipitation tank (5) is a 45-degree conical end socket.
6. The impurity filtering system for the polyester regeneration process according to claim 1, further comprising a vacuumizing port (8-5) and a vacuum suction pump (12), wherein the vacuumizing port (8-5) is arranged on the top cover (8-1), and the vacuumizing port (8-5) is connected with the vacuum suction pump (12) through a pipeline.
7. The impurity filtering system for polyester regeneration process according to claim 1, further comprising a nitrogen filling pipe (3), wherein the nitrogen filling pipe (3) is connected to the upper part of the settling tank (5).
8. The impurity filtering system for polyester regeneration process according to claim 1, wherein the average inner diameter of the drain hole at the bottom of the precipitation tank (5) is not smaller than DN250.
9. The impurity filtering system for polyester regeneration process according to claim 1, wherein the number of the desilting tanks (8) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321489886.1U CN220802338U (en) | 2023-06-13 | 2023-06-13 | Impurity filtering system for polyester regeneration process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321489886.1U CN220802338U (en) | 2023-06-13 | 2023-06-13 | Impurity filtering system for polyester regeneration process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220802338U true CN220802338U (en) | 2024-04-19 |
Family
ID=90679333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321489886.1U Active CN220802338U (en) | 2023-06-13 | 2023-06-13 | Impurity filtering system for polyester regeneration process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220802338U (en) |
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2023
- 2023-06-13 CN CN202321489886.1U patent/CN220802338U/en active Active
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