CN221051700U - Refined waste water discharging equipment of refined terephthalic acid - Google Patents
Refined waste water discharging equipment of refined terephthalic acid Download PDFInfo
- Publication number
- CN221051700U CN221051700U CN202322662492.8U CN202322662492U CN221051700U CN 221051700 U CN221051700 U CN 221051700U CN 202322662492 U CN202322662492 U CN 202322662492U CN 221051700 U CN221051700 U CN 221051700U
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- China
- Prior art keywords
- fixedly connected
- terephthalic acid
- shell
- refined
- plug
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- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000002351 wastewater Substances 0.000 title claims abstract description 74
- 238000007599 discharging Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000002699 waste material Substances 0.000 claims description 17
- 238000000746 purification Methods 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 7
- 241000883990 Flabellum Species 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 30
- 239000000110 cooling liquid Substances 0.000 description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 4
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model belongs to the technical field of wastewater discharge, in particular to a refined terephthalic acid refined wastewater discharge device, which comprises a shell; the top of the shell is fixedly connected with a conical flaring; two side walls of the shell are fixedly connected with two symmetrically arranged bottom plates; the top of the bottom plate is fixedly connected with a water tank; the side wall of the water tank is communicated with a water pipe; the end part of the water pipe is fixedly connected with a grid plate; the water outlet of the water pipe faces the top of the shell; a group of symmetrical supporting plates are fixedly connected to the side wall of the conical flaring; a motor is fixedly connected to the side wall of the supporting plate; an extension rod is fixedly connected with the output end of the motor; the extension rod penetrates through the support plate; the middle part of the extension rod is fixedly connected with a fan blade; through such structure, can cool down to the refined waste water that produces of accurate terephthalic acid, through the flabellum of both sides, can let the face of cooling wider, let the refined waste water of accurate terephthalic acid that flows into inside the casing all be the state after the cooling, be convenient for follow-up filtration and emission.
Description
Technical Field
The utility model belongs to the technical field of wastewater discharge, and particularly relates to a refined terephthalic acid refined wastewater discharge device.
Background
Refined terephthalic acid, also known as PTA, is a white powder crystal with trace amounts of toxins, and is a flammable chemical material commonly used in the production of polyester.
During the production of the purified terephthalic acid, a large amount of wastewater is generated, and the wastewater contains a large amount of pollutants, so that the direct discharge of the wastewater can cause the pollution of soil, atmosphere and water.
The temperature of the waste water of the purified terephthalic acid is higher after the waste water is produced, the normal temperature can reach more than 42 ℃, and the flocculating agent is added at the moment to cause poor flocculating agent effect, influence the purification of the waste water and cause difficult normal discharge.
To this end, the present utility model provides a purified terephthalic acid purification wastewater discharge apparatus.
Disclosure of utility model
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a refined terephthalic acid refined wastewater discharge device, which comprises a shell; the top of the shell is fixedly connected with a conical flaring; two side walls of the shell are fixedly connected with two symmetrically arranged bottom plates; the top of the bottom plate is fixedly connected with a water tank; the side wall of the water tank is communicated with a water pipe; the end part of the water pipe is fixedly connected with a grid plate; the water outlet of the water pipe faces the top of the shell; a group of symmetrical supporting plates are fixedly connected to the side wall of the conical flaring; a motor is fixedly connected to the side wall of the supporting plate; an extension rod is fixedly connected with the output end of the motor; the extension rod penetrates through the support plate; the middle part of the extension rod is fixedly connected with a fan blade; a storage barrel is fixedly connected to the bottom of the shell; the bottom rigid coupling of storage bucket has the waste water mouth, through such structure, can cool down to the refined waste water that produces of accurate terephthalic acid, through the flabellum of both sides, can let the face of cooling wider, lets the refined waste water of accurate terephthalic acid that flows into inside the casing all be the state after the cooling, is convenient for follow-up filtration and emission.
Preferably, the bottom of the conical flaring is fixedly connected with a first filter plate; a plurality of first through holes are formed in the top of the first filter plate; the bottom of the first filter plate is fixedly connected with a connecting block; the bottom of the connecting block is rotationally connected with an auger; the bottom of the shell is fixedly connected with a second filter plate; a plurality of second through holes are formed in the top of the second filter plate; the radius of the second through hole is smaller than that of the first through hole; the auger is located between the first filter plate and the second filter plate, through the structure, solid particles in waste liquid can be filtered at the tops of the first filter plate and the second filter plate, and the waste liquid flowing into the storage barrel is liquid, so that the next decomposition is facilitated.
Preferably, the top of the bottom plate is fixedly connected with a guide plate; the air vent is arranged on one side of the guide plate, which faces the fan blades, and through the structure, the cooling range of the cooling liquid is wider, and meanwhile, the blowing-out of wind force is not blocked.
Preferably, a baffle is fixedly connected between the storage barrel and the waste water port; a first water drain hole is formed in the middle of the baffle plate; a first plug is arranged in the middle of the first drain hole; through the structure, the first drain hole and the first plug are matched for use, so that the refined waste water of the refined terephthalic acid can be chemically decomposed, the refined waste water of the refined terephthalic acid is relatively clean, and the pollution of the refined waste water of the refined terephthalic acid to the environment is reduced.
Preferably, a second drain hole is formed in the bottom of the waste water port; a second plug is arranged in the middle of the second drain hole; the second drain hole and the second plug are matched for use; a pull rope penetrates through the middle of the second plug; the pull rope penetrates through the second plug and extends to the outside of the waste water port; the end of the pull rope is fixedly connected with the bottom of the first plug, through the structure, relatively clean refined terephthalic acid refined wastewater can be discharged, environmental pollution is reduced, and meanwhile, the first plug can be pulled more conveniently by pulling the pull rope, so that dissolved refined terephthalic acid refined wastewater flows into the wastewater outlet more conveniently.
Preferably, the middle part of the pull rope is fixedly connected with PH test paper; the PH test paper is positioned above the second plug; and be located the inside at waste water mouth, through this kind of structure, can let the staff observe the colour change of PH test paper in advance to judge whether the solution and the filtration of the refined waste water of accurate terephthalic acid reach the standard, thereby decide whether discharge.
The beneficial effects of the utility model are as follows:
1. According to the refined terephthalic acid wastewater discharge device, the water pump arranged in the water tank is synchronously started, the water pump is started to drive the cooling liquid filled in the water tank to flow out along with the water pipe and spray the cooling liquid into the shell, at the moment, the two motors are started, the motor is started to drive the extension rod to rotate, the fan blades fixedly connected to the middle part of the extension rod rotate along with the rotation of the extension rod, wind power is generated when the fan blades rotate, the opposite fan blades blow each other, opposite wind power is generated, the wastewater generated by refined terephthalic acid can be cooled, the cooled surfaces are wider through the fan blades at the two sides, and the refined terephthalic acid wastewater flowing into the shell is in a cooled state, so that the subsequent filtering and discharge are facilitated.
2. According to the refined terephthalic acid wastewater discharge device, the auger is driven to rotate by water flow, so that the liquid in the shell can be rolled by the rotation of the auger, the residual small particle residues can be brought out, and then the waste liquid can flow into the storage barrel through the second through holes.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a schematic diagram of the motor of the present utility model;
FIG. 3 is a schematic view of the structure of a water pipe according to the present utility model;
FIG. 4 is a schematic view of the structure of the auger of the present utility model;
FIG. 5 is a schematic view of the structure of the pull cord of the present utility model;
FIG. 6 is a schematic view of the structure of the first plug of the present utility model;
In the figure: 1. a housing; 12. a cone flare; 13. a bottom plate; 14. a water tank; 15. a water pipe; 16. a grid plate; 17. a support plate; 18. a motor; 19. an extension rod; 110. a fan blade; 111. a storage barrel; 112. a waste water port; 2. a first filter plate; 21. a first through hole; 22. a connecting block; 23. an auger; 24. a second filter plate; 25. a second through hole; 3. a deflector; 31. a vent hole; 4. a baffle; 41. a first drain hole; 42. a first plug; 5. a second drain hole; 51. a second plug; 52. a pull rope; 6. PH test paper; 7. and (5) a buckle.
Detailed Description
The utility model is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1 to 6, a wastewater discharge apparatus for purifying terephthalic acid according to an embodiment of the present utility model includes a housing 1; the top of the shell 1 is fixedly connected with a conical flaring 12; two side walls of the shell 1 are fixedly connected with two symmetrically arranged bottom plates 13; the top of the bottom plate 13 is fixedly connected with a water tank 14; the side wall of the water tank 14 is communicated with a water pipe 15; the end part of the water pipe 15 is fixedly connected with a grid plate 16; the water outlet of the water pipe 15 faces the top of the shell 1; a group of symmetrical supporting plates 17 are fixedly connected to the side wall of the conical flaring 12; the side wall of the supporting plate 17 is fixedly connected with a motor 18; an extension rod 19 is fixedly connected to the output end of the motor 18; the extension rod 19 penetrates through the support plate 17; the middle part of the extension rod 19 is fixedly connected with a fan blade 110; a storage barrel 111 is fixedly connected to the bottom of the shell 1; the bottom of the storage barrel 111 is fixedly connected with a waste water port 112, during operation, sewage after the processing of the refined terephthalic acid flows to the equipment, the sewage enters the equipment through the conical flaring 12, when the sewage enters the conical flaring 12, the water pump placed in the water tank 14 is synchronously started, the water pump is started to drive cooling liquid filled in the water tank 14, the cooling liquid flows out along with the water pipe 15 and is sprayed into the shell 1, at the moment, two motors 18 are started, the motor 18 is started to drive the extension rod 19 to rotate, the fan blades 110 fixedly connected to the middle part of the extension rod 19 rotate along with the rotation of the extension rod 19, wind power is generated when the fan blades 110 rotate, opposite wind power is generated when the opposite fan blades 110 mutually blow, through the structure, the waste water generated by the refining of the refined terephthalic acid can be cooled, the cooled surface is wider through the fan blades 110 at two sides, the refined terephthalic acid waste water flowing into the shell 1 is in a cooled state, and the subsequent filtering and discharging are convenient.
As shown in fig. 1 and 4, the bottom of the conical flaring 12 is fixedly connected with a first filter plate 2; the top of the first filter plate 2 is provided with a plurality of first through holes 21; the bottom of the first filter plate 2 is fixedly connected with a connecting block 22; the bottom of the connecting block 22 is rotatably connected with an auger 23; the bottom of the shell 1 is fixedly connected with a second filter plate 24; a plurality of second through holes 25 are formed in the top of the second filter plate 24; the radius of the second through hole 25 is smaller than that of the first through hole 21; the auger 23 is located between the first filter plate 2 and the second filter plate 24, during operation, the refined waste liquid of refined terephthalic acid after being cooled can initially flow to the top of the first filter plate 2, at this moment, the residual particles in the refined waste liquid of refined terephthalic acid can be filtered to the top of the first filter plate 2 by the first through hole 21, then the waste liquid of liquid flows into the inside of the shell 1, a large amount of waste liquid and cooling liquid flow to the inside of the shell 1 together, at this moment, the water flow can drive the auger 23 to rotate, at this moment, the auger 23 rotates can let the liquid in the shell 1 roll, at this moment, the residual smaller particles remain can be taken out, then the waste liquid can flow into the inside of the storage barrel 111 through the second through hole 25, through such a structure, the solid particles in the waste liquid can be filtered at the top of the first filter plate 2 and the second filter plate 24, let the waste liquid flowing into the inside of the storage barrel 111 all be liquid, and the next decomposition is convenient.
As shown in fig. 1 and 4, the top of the bottom plate 13 is fixedly connected with a guide plate 3; the air vent 31 has been seted up to one side of guide plate 3 towards flabellum 110, and during operation, when the coolant liquid in the water pipe 15 blowout, can spout to the top of guide plate 3, and liquid is pounded to the top of guide plate 3, can spout simultaneously, sets up air vent 31, can let the wind-force that flabellum 110 produced blow through guide plate 3, through such structure, can let coolant liquid refrigerated scope wider, does not block the blowout of wind-force simultaneously.
As shown in fig. 5, a baffle 4 is fixedly connected between the storage barrel 111 and the waste water outlet 112; a first drain hole 41 is formed in the middle of the baffle 4; a first plug 42 is arranged in the middle of the first drain hole 41; the first drain hole 41 and the first plug 42 are matched for use, when the storage barrel 111 is filled with a proper amount of ethanol, propanol or dimethyl sulfoxide during operation, when the refined waste water of the liquid refined terephthalic acid flows into the storage barrel 111 through cooling and filtering, the refined waste water of the liquid refined terephthalic acid contacts with the ethanol, propanol or dimethyl sulfoxide, and then decomposition is generated, so that relatively clean waste water is obtained, the first drain hole 41 can be opened, the waste water flows out, and through the structure, the refined waste water of the refined terephthalic acid can be chemically decomposed, the refined waste water of the refined terephthalic acid is relatively clean, and the pollution of the refined waste water of the refined terephthalic acid to the environment is reduced.
As shown in fig. 5, a second drain hole 5 is formed at the bottom of the waste water port 112; a second plug 51 is arranged in the middle of the second drain hole 5; the second water drain hole 5 and the second plug 51 are matched for use; a pull rope 52 penetrates through the middle part of the second plug 51; the pull rope 52 penetrates the second plug 51 to extend to the outside of the waste water port 112; the end of the pull rope 52 is fixedly connected with the bottom of the first plug 42, when the relatively clean purified terephthalic acid wastewater flows into the waste water port 112 during operation, the pull rope 52 can be pulled to drive the second plug 51 to be pulled out through pulling the pull rope 52, the relatively clean purified terephthalic acid wastewater can be discharged through the structure, the pollution to the environment is reduced, and meanwhile, the first plug 42 can be pulled more conveniently through pulling the pull rope 52, so that the dissolved purified terephthalic acid wastewater flows into the waste water port 112 more conveniently.
As shown in fig. 6, the middle part of the pull rope 52 is fixedly connected with a PH test paper 6; the PH test paper 6 is positioned above the second plug 51; and be located the inside at waste water mouth 112, during operation, when pulling stay cord 52, can pull out PH test paper 6 first, through such structure, can let the staff observe the colour change of PH test paper 6 first to judge whether the dissolution and the filtration of the refined waste water of smart terephthalic acid reach standard, thereby decide whether discharge.
As shown in fig. 5, the bottom of the waste water port 112 is fixedly connected with a buckle 7; the buckle 7 is located at the end of the pull rope 52, and when the buckle is in operation, the pull rope 52 can be clamped in the middle of the buckle 7 without pulling the pull rope 52, and through the structure, the problem of acceleration damage caused by the fact that the pull rope 52 is in a panic state is solved.
When the device works, sewage after the processing of the refined terephthalic acid flows into the device through the conical flaring 12, when the sewage enters the conical flaring 12, a water pump placed in the water tank 14 is synchronously started, the water pump is started to drive cooling liquid filled in the water tank 14 to flow out along with the water pipe 15 and spray the cooling liquid into the shell 1, at the moment, two motors 18 are started, the motor 18 is started to drive the extension rod 19 to rotate, fan blades 110 fixedly connected to the middle part of the extension rod 19 rotate along with the extension rod 19, the fan blades 110 rotate to generate wind force, the opposite fan blades 110 mutually blow to generate opposite wind force, the refined terephthalic acid waste liquid after being cooled initially flows to the top of the first filter plate 2, and residual particles in the refined terephthalic acid waste liquid are filtered to the upper part of the first filter plate 2 through the first through hole 21, the waste liquid of the liquid flows into the shell 1, a large amount of waste liquid and cooling liquid flow into the shell 1 together, at the moment, the water flow drives the auger 23 to rotate, at the moment, the auger 23 rotates to enable the liquid in the shell 1 to roll, at the moment, the residual smaller particles are carried out, the waste liquid flows into the storage barrel 111 through the second through hole 25, when the cooling liquid in the water pipe 15 is sprayed out, the waste liquid is sprayed to the top of the guide plate 3, when the liquid is smashed to the top of the guide plate 3, the air vent 31 is formed, the wind generated by the fan blade 110 can blow through the guide plate 3, a proper amount of ethanol, propanol or dimethyl sulfoxide is filled in the storage barrel 111, when the refined terephthalic acid wastewater of the liquid flows into the storage barrel 111 through cooling and filtering, the refined terephthalic acid wastewater is contacted with the ethanol, propanol or dimethyl sulfoxide, and then decomposition is generated, the method comprises the steps that relatively clean waste water is obtained, then a first drain hole 41 can be opened to enable the waste water to flow out, when the relatively clean purified terephthalic acid purified waste water flows into the waste water port 112, a pull rope 52 can be pulled through, the pull rope 52 can be pulled to drive a second plug 51 to be pulled out, and the middle part of the pull rope 52 is fixedly connected with a PH test paper 6; the PH test paper 6 is positioned above the second plug 51; and is positioned inside the waste water port 112, and when the pull rope 52 is pulled in operation, the PH test paper 6 is pulled out first.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A waste water discharging device for refined terephthalic acid comprises a shell (1); the method is characterized in that: the top of the shell (1) is fixedly connected with a conical flaring (12); two side walls of the shell (1) are fixedly connected with two symmetrically arranged bottom plates (13); the top of the bottom plate (13) is fixedly connected with a water tank (14); the side wall of the water tank (14) is communicated with a water pipe (15); the end part of the water pipe (15) is fixedly connected with a grid plate (16); the water outlet of the water pipe (15) faces the top of the shell (1); the side wall of the conical flaring (12) is fixedly connected with a group of symmetrical supporting plates (17); a motor (18) is fixedly connected to the side wall of the supporting plate (17); an extension rod (19) is fixedly connected with the output end of the motor (18); the extension rod (19) penetrates through the supporting plate (17); the middle part of the extension rod (19) is fixedly connected with a fan blade (110); a storage barrel (111) is fixedly connected to the bottom of the shell (1); the bottom of the storage barrel (111) is fixedly connected with a waste water port (112).
2. The wastewater discharge apparatus for purifying terephthalic acid as claimed in claim 1, wherein: the bottom of the conical flaring (12) is fixedly connected with a first filter plate (2); a plurality of first through holes (21) are formed in the top of the first filter plate (2); the bottom of the first filter plate (2) is fixedly connected with a connecting block (22); the bottom of the connecting block (22) is rotationally connected with an auger (23); the bottom of the shell (1) is fixedly connected with a second filter plate (24); a plurality of second through holes (25) are formed in the top of the second filter plate (24); the radius of the second through hole (25) is smaller than that of the first through hole (21); the auger (23) is located between the first filter plate (2) and the second filter plate (24).
3. The purified terephthalic acid purification wastewater discharge device according to claim 2, wherein: the top of the bottom plate (13) is fixedly connected with a guide plate (3); a vent hole (31) is formed in one side, facing the fan blades (110), of the guide plate (3).
4. A purified terephthalic acid purification wastewater discharge device as claimed in claim 3, wherein: a baffle (4) is fixedly connected between the storage barrel (111) and the waste water port (112); a first water drain hole (41) is formed in the middle of the baffle plate (4); a first plug (42) is arranged in the middle of the first water discharge hole (41); the first drain hole (41) and the first plug (42) are matched for use.
5. The wastewater discharge device for refining terephthalic acid according to claim 4, wherein: a second drain hole (5) is formed in the bottom of the waste water port (112); a second plug (51) is arranged in the middle of the second drain hole (5); the second drain hole (5) and the second plug (51) are matched for use; a pull rope (52) penetrates through the middle of the second plug (51); the pull rope (52) penetrates through the second plug (51) and extends to the outside of the waste water port (112); the end of the pull rope (52) is fixedly connected with the bottom of the first plug (42).
6. The wastewater discharge device for refining terephthalic acid as claimed in claim 5, wherein: the middle part of the pull rope (52) is fixedly connected with a PH test paper (6); the PH test paper (6) is positioned above the second plug (51); and is located inside the waste gate (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322662492.8U CN221051700U (en) | 2023-09-28 | 2023-09-28 | Refined waste water discharging equipment of refined terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322662492.8U CN221051700U (en) | 2023-09-28 | 2023-09-28 | Refined waste water discharging equipment of refined terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221051700U true CN221051700U (en) | 2024-05-31 |
Family
ID=91206696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322662492.8U Active CN221051700U (en) | 2023-09-28 | 2023-09-28 | Refined waste water discharging equipment of refined terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221051700U (en) |
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2023
- 2023-09-28 CN CN202322662492.8U patent/CN221051700U/en active Active
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