CN219885865U - Powder granule sewage purification recovery system of polypropylene device - Google Patents
Powder granule sewage purification recovery system of polypropylene device Download PDFInfo
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- CN219885865U CN219885865U CN202320983444.6U CN202320983444U CN219885865U CN 219885865 U CN219885865 U CN 219885865U CN 202320983444 U CN202320983444 U CN 202320983444U CN 219885865 U CN219885865 U CN 219885865U
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- tank
- sewage
- sludge
- inlet
- polypropylene
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- 239000010865 sewage Substances 0.000 title claims abstract description 71
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 37
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 37
- -1 polypropylene Polymers 0.000 title claims abstract description 36
- 239000008187 granular material Substances 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 title claims abstract description 28
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 238000000746 purification Methods 0.000 title claims abstract description 14
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000007667 floating Methods 0.000 claims abstract description 9
- 239000008188 pellet Substances 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 49
- 239000002245 particle Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000002955 isolation Methods 0.000 claims description 21
- 238000009825 accumulation Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 241000282326 Felis catus Species 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 238000004064 recycling Methods 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model relates to a powder granule sewage purification and recovery system of a polypropylene device, which comprises an electrochemical facility, a buffer tank and a granule separating tank, wherein the electrochemical facility is used for removing floating, dispersed oil, emulsified oil and propylene glycol in the sewage of the polypropylene device; the first side of the grain separating tank is provided with an inlet which is lower than the output port of the buffer tank so as to enable sewage to automatically flow into the grain separating tank, and the second side of the grain separating tank is provided with an outlet which is lower than the inlet so as to enable sewage to automatically flow out; a pellet basket is disposed in the pellet tank adjacent the inlet for blocking and receiving the pellets therein. According to the utility model, oil separation treatment is carried out through an electrochemical facility, floating oil, dispersed oil, emulsified oil and propylene glycol in the sewage of the polypropylene device are removed, then the sewage is enabled to pass through a grain separation tank in a self-flowing mode to collect powder and granules in the sewage, the powder and the granules are effectively recovered, adverse effects caused by the fact that the granules enter the downstream are avoided, the recovered granules are located in a grain separation basket and are convenient to take out, and the operation is simple and convenient.
Description
Technical Field
The utility model relates to a powder granule sewage purification and recovery system of a polypropylene device.
Background
Polypropylene (PP) is a semi-crystalline thermoplastic plastic, has high impact resistance and strong mechanical property, can resist various organic solvents and acid-base corrosion, has wide application in industry, and is one of common polymer materials.
In the production process of polypropylene devices represented by the spheronizone polypropylene process technology, equipment such as an extruder, a granulating water tank and the like can generate a certain amount of high polymer particles in the production process, and the particles often flow into a production sewage pipe network along with the production sewage discharge equipment. These particles are classified into powder and granules according to particle size. The particle size of the powder is 88-3000 mu m, and the particle size of the granules is 3-4 mm. These powders and granules are insoluble in water and cannot be biochemically degraded, and have a specific gravity greater than that of water.
The amount of powder and pellets often varies depending on the adjustment of the production run, and a part of the falling material is produced during the sampling process, because a part of the material is discharged and replaced for representative sample during the sampling process, and the other part of the falling material amount is mainly determined by the running condition of the extruder, and if the extruder is not well-cut, a lot of large or small particles are produced. The floor material has a sales channel, and the price is lower than that of a normal granular product. At present, a skimming pool is usually arranged on a drain pipe of equipment such as an extruder, a grain cutting water tank and the like, polymer particles floating on the water surface are blocked by a retaining wall, but the particles are often easily carried out of the skimming pool by water flow, so that the particles enter an underground pipe network for producing sewage and are dispersed to all parts of the pipe network along with the water flow. Polymer particles entering a pipe network easily block the wellhead of a subterranean well, the inlet and outlet of a water pool and the orifice of equipment, so that various problems exist in the aspects of daily maintenance and management of the device and recovery of floor materials.
The waste water discharged from the polypropylene device contains a small amount of substances such as COD, BOD, petroleum, propylene glycol solution and the like besides polypropylene powder and granules. If the waste water is not removed, the water is fished out and the waste water pool has the problems of strong smell, dirty waste materials and poor waste water, does not meet the environmental protection requirement, and the fished out granular materials are poor in quality and are not suitable for sale.
The main problems of the existing polymer particle-containing drainage system are as follows: (1) When receiving polymer-containing particle drainage of production equipment, a skimming pool cannot intercept all polymer particles, a part of polymer particles inevitably enter an underground pipe network of production sewage, and after entering the pipe network, the polymer particles are carried to various positions in the pipe network along with water flow, so that the polymer particles are dispersed in positions and are inconvenient to clean and collect; (2) At present, the technology for separating powder and granules from wastewater at home and abroad usually adopts mechanical fishing, and the technology usually adopts artificial net bags for fishing at home and abroad, so that the effect is poor and omission is easy.
Disclosure of Invention
Aiming at the current state of the art, the utility model provides a system for purifying and recycling the powder and granular materials of the polypropylene device, which can effectively recycle the powder and granular materials in the sewage of the polypropylene device and remove the oil.
The technical scheme adopted for solving the technical problems is as follows:
a powder granule sewage purification and recovery system of a polypropylene device, comprising:
an electrochemical facility for removing floating, dispersed oil, emulsified oil and propylene glycol in the polypropylene device sewage; the top of the electrochemical facility is provided with a dirty oil discharge port, and the bottom of the electrochemical facility is provided with a sludge outlet;
the buffer tank is arranged at the downstream of the electrochemical facility, the top of the buffer tank is provided with an input port for inputting liquid processed by the electrochemical facility and used for further oil-water separation, the top of the buffer tank is provided with a dirty oil discharge port, the bottom of the buffer tank is provided with a sludge outlet, and the lower part of the buffer tank is provided with an output port for discharging the sewage with particles;
the first side is provided with an inlet which is lower than the output port of the buffer tank and can allow sewage to enter the particle separating tank automatically, and the second side is provided with an outlet which is lower than the inlet and can allow sewage to flow out automatically; the particle separating tank is provided with a particle separating basket which is arranged close to the inlet and used for separating and containing particles.
Preferably, the electrochemical facility comprises a first part and a second part which are adjacently arranged, wherein a partition plate extending downwards from the top is arranged in the first part, a gap for sewage after oil separation to enter the second part is formed between the bottom of the partition plate and the inner bottom wall of the first part, and a dirty oil discharge port is formed at the top of the first part; the sewage inlet of the electrochemical facility is connected to the side of the first part and the sewage outlet is connected to the side of the second part.
Preferably, the device further comprises a dirty oil collecting tank which is arranged above the electrochemical facility and the buffer tank, wherein a dirty oil inlet of the dirty oil collecting tank is communicated with each dirty oil discharge port through a pipeline; the dirty oil collecting tank is provided with a channel for delivering the precipitated sewage to a sewage inlet of an electrochemical facility and a sludge outlet for discharging the precipitated sludge.
Preferably, the system further comprises a homogenizing tank connected to the upstream of the electrochemical facility, wherein the top of the homogenizing tank is used for inputting sewage of the polypropylene device, the lower outlet of the homogenizing tank is connected with the sewage port of the electrochemical facility, and the bottom of the homogenizing tank is provided with a sludge outlet.
Preferably, the device further comprises a wet sludge tank and a sludge concentration tank, wherein the top of the wet sludge tank is provided with sludge inlets communicated with sludge outlets, the outlets of the wet sludge tank are connected with the inlets of the sludge concentration tank, and the top of the sludge concentration tank is provided with a pipeline for conveying the obtained supernatant to a dirty oil inlet of a dirty oil collecting tank.
Preferably, the bottom wall of the separator tank is higher near the first side than the second side so as to form a tray at the first side, the separator basket is arranged on the tray, the top opening corresponds to an inlet pipeline of the separator tank, the second side is concave downwards to form a water accumulation area, and an outlet of the separator tank is connected with the water accumulation area.
Preferably, the side wall of the grain isolation pond is provided with a filtering hole, the top opening of the grain isolation pond is provided with a cover plate biased at the side part of the inlet pipeline, and the cover plate is detachably arranged at the top of the grain isolation pond.
Preferably, a ladder extending downwards from the top opening is arranged on the inner wall of the grain isolation pond, so that the inside of the grain isolation pond is convenient to overhaul.
Compared with the prior art, the utility model has the advantages that: according to the utility model, oil separation treatment is carried out through an electrochemical facility, floating oil, dispersed oil, emulsified oil and propylene glycol in the sewage of the polypropylene device are removed, then the sewage is enabled to pass through a grain separation tank in a self-flowing mode to collect powder and granules in the sewage, the powder and the granules are effectively recovered, adverse effects caused by the fact that the granules enter the downstream are avoided, the recovered granules are located in a grain separation basket and are convenient to take out, and the operation is simple and convenient.
Drawings
FIG. 1 is a schematic diagram of a recycling system according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the structure of the spacer cell of FIG. 1;
fig. 3 is a top view of fig. 2.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 3, the powder granule sewage purification recovery system of the polypropylene device of the present embodiment includes:
an electrochemical facility 01 for removing floating, dispersed oil, emulsified oil and propylene glycol in the polypropylene device sewage; the top of the electrochemical facility 01 is provided with a dirty oil discharge port, and the bottom is provided with a sludge outlet;
the buffer tank 02 is arranged at the downstream of the electrochemical facility 01, the top of the buffer tank is provided with an input port for inputting liquid processed by the electrochemical facility 01 and used for further oil-water separation, the top of the buffer tank is provided with a dirty oil discharge port, the bottom of the buffer tank is provided with a sludge outlet, and the lower part of the buffer tank is provided with an output port for discharging the sewage with particles;
the grain separating tank 03 is arranged at the downstream of the buffer tank 02, the first side is provided with an inlet which is lower than the outlet of the buffer tank 02 and can allow sewage to flow into the grain separating tank, and the second side is provided with an outlet which is lower than the inlet and can allow sewage to flow out; a spacer basket 031 is provided in the spacer tank 03, which is arranged near the inlet, for blocking and receiving particulate matter therein.
The electrochemical facility 01 comprises a first part 011 and a second part 012 which are adjacently arranged, wherein a baffle 013 which extends downwards from the top is arranged in the first part 011, a gap for sewage after oil separation to enter the second part 012 is formed between the bottom of the baffle 013 and the inner bottom wall of the first part 011, and a dirty oil discharge port is formed at the top of the first part 011; the sewage inlet of the electrochemical installation 01 is connected to the side of the first section 011 and the sewage outlet is connected to the side of the second section 012.
The embodiment also comprises a dirty oil collecting pool 04 which is arranged above the electrochemical facility 01 and the buffer tank 02, wherein a dirty oil inlet of the dirty oil collecting pool 04 is communicated with each dirty oil discharge port through a pipeline; the dirty oil collecting tank 04 is provided with a channel for delivering the precipitated sewage to a sewage inlet of the electrochemical facility 01 and a sludge outlet for discharging the precipitated sludge. The embodiment further comprises a homogenizing tank 05 connected to the upstream of the electrochemical facility 01, wherein the top of the homogenizing tank 05 is used for inputting sewage of the polypropylene device, the lower outlet of the homogenizing tank 05 is connected with the sewage port of the electrochemical facility 01, and the bottom of the homogenizing tank 05 is provided with a sludge outlet.
The embodiment further comprises a wet sludge tank 06 and a sludge concentration tank 07, wherein the top of the wet sludge tank 06 is provided with a sludge inlet communicated with each sludge outlet, the outlet of the wet sludge tank 06 is connected with the inlet of the sludge concentration tank 07, and the top of the sludge concentration tank 07 is provided with a pipeline for conveying the obtained supernatant to a dirty oil inlet of a dirty oil collecting tank 04.
In the present embodiment, the bottom wall of the separator tank 03 is higher near the first side than the second side so that a pallet 032 is formed at the first side, a separator basket 031 is placed on the pallet 032 and has an opening at the top corresponding to the inlet pipe 001 of the separator tank 03, a water accumulation region 033 is concavely formed at the second side, and the outlet 002 of the separator tank 03 is connected to the water accumulation region 033.
The side wall of the grain isolation pond 03 is provided with a filtering hole, the top opening of the grain isolation pond 03 is provided with a cover plate 034 biased at the side part of the inlet pipeline, and the cover plate 034 is detachably arranged at the top of the grain isolation pond 03. The inner wall of the grain isolation pond 03 is provided with a cat ladder 035 which extends downwards from the top opening, thereby facilitating the maintenance of the inside.
As shown in fig. 1, the recovery system of the present embodiment is used for treating sewage:
(1) The sewage from polypropylene plant (temperature 30-95 deg.C, 10-100 ppm of polypropylene powder and granule, 10-20 mg/L of propylene glycol, 30mg/L of petroleum, and 100mg/L of SS) is pumped into electrochemical facility 01 after passing through homogenizing tank 05, and most of floating, dispersing, emulsifying and propylene glycol are removed by oil separation and electric flocculation. The electrochemical facility 01 adopts 380V alternating current, the current density is 500-600A/-square meter, the electrode plate adopts titanium material nickel plating, and the electrolysis time is 60min. The electrochemical facility is divided into 2 parts, wherein the first part is an oil separation tank, and the second part is a reaction tank. Upstream water enters the oil separation tank and then enters the reaction tank. Sodium chloride is added into the water to keep the conductivity of the sewage at 40-80 mu S/cm. To remove propylene glycol, hydrogen peroxide is added into an electrochemical facility 01, propylene glycol is oxidized to generate malonic acid, and sodium hydroxide is added into a buffer tank 02 for neutralization.
(2) The effluent from the electrochemical facility 01 enters a buffer tank 02, and the floating, dispersed and emulsified oil is not completely treated in the previous stage, and is treated in the buffer tank.
(3) And (5) mechanically filtering and recycling polypropylene granules in the sewage. After the buffer tank 02 is discharged, the production wastewater with polypropylene particles is connected into the grain isolation pond 03 in a self-flowing mode through a pipeline. The height difference is arranged between the water inlet pipe and the water outlet pipe in the grain isolation pond 03. The water flows through the spacer basket 031 in a self-flowing manner into the downstream pipe network. The spacer basket 031 is placed at the bottom of the spacer pool 03. Polypropylene particles carried in the water flow are intercepted by the spacer basket 031. The worker confirms the full state of the spacer basket 031 through the observation hole of the cover plate. In the production drain interval, the worker opens the cover plate, lifts the spacer basket 031, and collects the intercepted polypropylene granule powder particles.
(4) After the water is discharged from the grain separating tank 03, the sewage is lifted by a pump and is sent to a sewage treatment plant for subsequent treatment.
(5) During the treatment, a certain amount of sludge and dirty oil is produced. Sludge is mainly produced in the electrochemical facility 01 for back flushing and the buffer tank 02 for sewage discharge. Considering harmless and recycling treatment of sludge, the sludge is collected in a wet sludge tank 06 for storage, and then is pumped to a sludge concentration tank 07 for concentration and solid-liquid separation by a lifting pump, and the supernatant fluid flows back to a dirty oil collecting tank 04. And delivering the effluent of the concentration tank to a sludge dewatering unit for dewatering. The concentrated sludge at the bottom of the dirty oil collecting tank 04 is conveyed back to the wet sludge tank under pressure, and is sent to an off-site treatment facility for harmless and recycling treatment after dehydration and reduction. Dirty oil is mainly generated in the back flushing of the electrochemical facility 01 and the pollution discharge of the buffer tank 02. The water content of the dirty oil is higher, after the dirty oil is pumped to a dirty oil collecting tank for natural sedimentation and separation, the dirty oil at the upper part is pumped to an oil recovery system for system recovery, and the sewage at the middle part is sent to a downstream sewage treatment plant for subsequent treatment.
Claims (8)
1. The utility model provides a powder aggregate sewage purification recovery system of polypropylene plant which characterized in that includes:
an electrochemical facility for removing floating, dispersed oil, emulsified oil and propylene glycol in the polypropylene device sewage; the top of the electrochemical facility is provided with a dirty oil discharge port, and the bottom of the electrochemical facility is provided with a sludge outlet;
the buffer tank is arranged at the downstream of the electrochemical facility, the top of the buffer tank is provided with an input port for inputting liquid processed by the electrochemical facility and used for further oil-water separation, the top of the buffer tank is provided with a dirty oil discharge port, the bottom of the buffer tank is provided with a sludge outlet, and the lower part of the buffer tank is provided with an output port for discharging the sewage with particles;
the first side is provided with an inlet which is lower than the output port of the buffer tank and can allow sewage to enter the particle separating tank automatically, and the second side is provided with an outlet which is lower than the inlet and can allow sewage to flow out automatically; the particle separating tank is provided with a particle separating basket which is arranged close to the inlet and used for separating and containing particles.
2. The powder granule sewage purification and recovery system of a polypropylene apparatus according to claim 1, wherein: the electrochemical facility comprises a first part and a second part which are adjacently arranged, wherein a partition plate extending downwards from the top is arranged in the first part, a gap for sewage after oil separation to enter the second part is formed between the bottom of the partition plate and the inner bottom wall of the first part, and a dirty oil discharge port is formed in the top of the first part; the sewage inlet of the electrochemical facility is connected to the side of the first part and the sewage outlet is connected to the side of the second part.
3. The powder granule sewage purification and recovery system of a polypropylene apparatus according to claim 2, wherein: the device also comprises a dirty oil collecting tank which is arranged above the electrochemical facility and the buffer tank, wherein a dirty oil inlet of the dirty oil collecting tank is communicated with each dirty oil discharge port through a pipeline; the dirty oil collecting tank is provided with a channel for delivering the precipitated sewage to a sewage inlet of an electrochemical facility and a sludge outlet for discharging the precipitated sludge.
4. A powder pellet sewage purification and recovery system of a polypropylene apparatus according to claim 3, wherein: the sewage treatment device is characterized by further comprising a homogenizing tank connected to the upstream of the electrochemical facility, wherein the top of the homogenizing tank is used for inputting sewage of the polypropylene device, the lower outlet of the homogenizing tank is connected with the sewage port of the electrochemical facility, and the bottom of the homogenizing tank is provided with a sludge outlet.
5. The powder granule sewage purification and recovery system of a polypropylene apparatus according to claim 4, wherein: the wet sludge tank is characterized by further comprising a wet sludge tank and a sludge concentration tank, wherein the top of the wet sludge tank is provided with sludge inlets communicated with sludge outlets, the outlets of the wet sludge tank are connected with the inlets of the sludge concentration tank, and the top of the sludge concentration tank is provided with a pipeline for conveying the obtained supernatant to a dirty oil inlet of a dirty oil collecting tank.
6. The powder granule sewage purification and recovery system of a polypropylene apparatus according to any one of claims 1 to 5, wherein: the bottom wall of the grain isolation pond is higher than the second side near the first side so as to form a supporting table at the first side, the grain isolation basket is arranged on the supporting table, the top opening of the grain isolation basket corresponds to an inlet pipeline of the grain isolation pond, a water accumulation area is concavely formed at the second side, and an outlet of the grain isolation pond is connected with the water accumulation area.
7. The powder granule sewage purification and recovery system of a polypropylene apparatus according to claim 6, wherein: the side wall of the grain isolation pond is provided with a filtering hole, the top opening of the grain isolation pond is provided with a cover plate biased at the side part of the inlet pipeline, and the cover plate is detachably arranged at the top of the grain isolation pond.
8. The powder granule sewage purification and recovery system of a polypropylene apparatus according to claim 6, wherein: the inner wall of the grain isolation pond is provided with a cat ladder which extends downwards from the opening at the top, so that the inside of the grain isolation pond is convenient to overhaul.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320983444.6U CN219885865U (en) | 2023-04-26 | 2023-04-26 | Powder granule sewage purification recovery system of polypropylene device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320983444.6U CN219885865U (en) | 2023-04-26 | 2023-04-26 | Powder granule sewage purification recovery system of polypropylene device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219885865U true CN219885865U (en) | 2023-10-24 |
Family
ID=88408946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320983444.6U Active CN219885865U (en) | 2023-04-26 | 2023-04-26 | Powder granule sewage purification recovery system of polypropylene device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219885865U (en) |
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2023
- 2023-04-26 CN CN202320983444.6U patent/CN219885865U/en active Active
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