CN116462260A - A triple effect evaporation system for industrial waste water evaporation salt extraction - Google Patents
A triple effect evaporation system for industrial waste water evaporation salt extraction Download PDFInfo
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- CN116462260A CN116462260A CN202310516359.3A CN202310516359A CN116462260A CN 116462260 A CN116462260 A CN 116462260A CN 202310516359 A CN202310516359 A CN 202310516359A CN 116462260 A CN116462260 A CN 116462260A
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- effect
- evaporation
- chamber
- heating chamber
- effect evaporation
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- 238000001704 evaporation Methods 0.000 title claims abstract description 128
- 230000008020 evaporation Effects 0.000 title claims abstract description 117
- 230000000694 effects Effects 0.000 title claims abstract description 63
- 150000003839 salts Chemical class 0.000 title claims abstract description 47
- 238000000605 extraction Methods 0.000 title claims abstract description 23
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 39
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/26—Multiple-effect evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention provides a three-effect evaporation system for evaporating and extracting salt from industrial wastewater, and relates to the field of wastewater evaporation and salt extraction. The utility model provides a three effect evaporation system for industrial waste water evaporation salt extraction, includes condensate water preheater, one effect evaporation chamber, one effect heating chamber, two effect evaporation chamber, two effect heating chambers, three effect evaporation chamber and three effect heating chambers, the top of two effect evaporation chamber communicates to the inside of two effect heating chambers through the steam honeycomb duct, the top of three effect evaporation chamber communicates to the inside of three effect heating chambers through the steam honeycomb duct, the top of three effect heating chamber communicates to the condenser inside through the steam honeycomb duct. The three-effect evaporation system disclosed by the invention has the advantages that the heating time of materials is shorter, the evaporation speed is high, the concentration specific gravity is high, the original effect of the materials can be effectively maintained, the subsequent salt extraction efficiency is improved, meanwhile, the steam is recycled, and compared with the traditional evaporation salt extraction system, the evaporation capacity is saved by about 60%, and the assistance is provided for energy conservation and consumption reduction of enterprises.
Description
Technical Field
The invention relates to the field of evaporation and salt extraction of wastewater, in particular to a three-effect evaporation system for evaporation and salt extraction of industrial wastewater.
Background
Industrial wastewater generally contains a large amount of salt, if the industrial wastewater is directly discharged, the environment is polluted, and resources are wasted, so that an enterprise can generally carry out evaporation salt extraction during industrial wastewater treatment, and multi-effect evaporation salt extraction is the most common method for the enterprise in the salt extraction process.
The multi-effect evaporation salt extraction technology aims at energy efficiency and economy, and in a closed system with temperature and pressure regulation, separation is realized by repeated evaporation and condensation, and the salt dissolved in the solution is extracted, wherein the total proportion is more than 95%. The technology has the greatest advantages of high efficiency, stable quality, economy, environmental protection and easy control of operation, but in the current multi-effect salt extraction system, as materials are directly evaporated through an evaporation chamber, the materials are required to be heated for a long time, the evaporation speed is low, the proportion of concentrate produced in the later stage is small, the original effect of the materials cannot be kept, the salt extraction efficiency is low, meanwhile, the steam is directly discharged after being used once, the utilization rate of the steam is low, and the energy consumption is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a three-effect evaporation system for evaporating and extracting salt from industrial wastewater, which has the advantages of shorter heating time, high evaporation speed, high concentration specific gravity and high salt extraction efficiency, and meanwhile, the steam recycling is more energy-saving.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the utility model provides a three effect evaporation system for industrial waste water evaporation draws salt, includes condensate water preheater, one effect evaporation chamber, one effect heating chamber, two effect evaporation chambers, two effect heating chambers, three effect evaporation chambers and three effect heating chambers, the top of one effect evaporation chamber passes through steam honeycomb duct and connects in one side of one effect heating chamber, the output of condensate water preheater passes through material honeycomb duct and circulating pump intercommunication to the inside of one effect heating chamber, the top of one effect heating chamber passes through steam honeycomb duct intercommunication to the inside of two effect evaporation chambers, the top of two effect evaporation chambers passes through steam honeycomb duct intercommunication to the inside of two effect heating chambers, the top of two effect heating chambers passes through steam honeycomb duct intercommunication to the inside of three effect evaporation chambers, the condenser is installed to one side of three effect heating chambers, the top of three effect heating chamber passes through steam honeycomb duct intercommunication to the condenser inside.
Preferably, a feed pump is arranged on one side of the condensate water preheater through a feed pipe, and a sub-cylinder is arranged on one side of the first-effect evaporation chamber through a steam guide pipe.
Preferably, the bottom end of the first-effect heating chamber is connected to one side of the bottom end of the first-effect evaporating chamber through a first return pipe, and one side of the bottom end of the first-effect evaporating chamber is connected to the condensate water inlet end of the condensate water preheater through a condensate water guide pipe.
Preferably, the bottom end of the two-effect heating chamber is connected with a second return pipe, and the bottom end of the second return pipe is communicated to the inside of the liquid storage tank through a condensed water guiding pipe.
Preferably, the bottom of the triple-effect heating chamber is communicated to the inside of the gas-liquid separator through a third return pipe, one side of the gas-liquid separator is communicated to the inside of the liquid storage tank through a condensed water guide pipe, the bottom of the gas-liquid separator is communicated to the inside of the vortex salt separator through a pipeline, and a salt storage chamber is arranged at the bottom of the vortex salt separator.
Preferably, an automatic drainer is installed on one side of the condenser, the input end and the output end of the automatic drainer are both communicated to the inside of the condenser through pipelines, and a vacuum interface is arranged at the top end of the automatic drainer.
Preferably, the bottom end of the automatic drainer is communicated to the inside of the liquid storage tank through a condensed water delivery pipe, and the output end of the liquid storage tank is communicated to the condensed water inlet end of the condensed water preheater through a pipeline and a return liquid pump.
Working principle: the feed liquid is pressurized by a feed pump, continuously enters a condensate water preheater, exchanges heat with steam condensate, then enters a first-effect evaporation chamber, then enters a first-effect heating chamber through a circulating pump, steam from an external pipeline enters a shell side of the first-effect heating chamber for heating after passing through a gas separation cylinder, secondary steam is generated by boiling evaporation after controlling a pressure scheme in the first-effect heating chamber, the secondary steam after evaporation in the first-effect evaporation chamber is used as a second-effect heating source, the condensate water in the first-effect heating chamber returns to the condensate water preheater through a steam guide pipe, exchanges heat with the feed liquid before entering the first-effect heating chamber, preheats the feed liquid, simultaneously recovers hot water waste heat, the second-effect evaporation chamber is heated under the action of the secondary steam of the first-effect heating chamber, starts boiling evaporation, then the secondary steam generated by the second-effect evaporation chamber enters a three-effect heating chamber through a three-effect evaporation chamber, the secondary steam generated by the second-effect evaporation chamber is used as a heat source for evaporation, the solution in the second-effect evaporation chamber enters the three-effect evaporation chamber through a pressure difference, the second-effect evaporation chamber is used as a condensate water heating source, the condensate water generated by the second-effect evaporation chamber returns to the three-effect evaporation chamber through a first-effect return pipe and the first-effect evaporation chamber, the condensate water heater returns to the three-effect evaporator as condensate water-cooling system, and finally returns to the three-effect heating chamber through the condensate water-effect evaporator, and the condensate water-circulating system is cooled by the condensate water-circulation system, and finally returns the condensate water generated by the three-effect heating chamber, and the condensate water is cooled by the condensate water after the condensate system, concentrated feed liquid discharged from the three-effect heating chamber enters the gas-liquid separator for separation, liquid enters the vortex salt separator for separation and salt extraction, and enters the salt storage chamber.
The invention provides a three-effect evaporation system for evaporating and extracting salt from industrial wastewater. The beneficial effects are as follows:
the three-effect evaporation system disclosed by the invention has the advantages that the heating time of materials is shorter, the evaporation speed is high, the concentration specific gravity is high, the original effect of the materials can be effectively maintained, the subsequent salt extraction efficiency is improved, meanwhile, the steam is recycled, and compared with the traditional evaporation salt extraction system, the evaporation capacity is saved by about 60%, and the assistance is provided for energy conservation and consumption reduction of enterprises.
Drawings
FIG. 1 is a schematic flow chart of the system of the present invention.
Wherein, 1, a condensate water preheater; 2. a first-effect evaporation chamber; 3. a first-effect heating chamber; 4. a two-effect evaporation chamber; 5. a two-effect heating chamber; 6. a triple effect evaporation chamber; 7. a three-effect heating chamber; 8. a condenser; 9. an automatic drainer; 10. a feed pump; 11. a cylinder; 12. a first return pipe; 13. a second return pipe; 14. a third return line; 15. a gas-liquid separator; 16. a swirl salt separator; 17. a salt storage chamber; 18. a vacuum interface; 19. a liquid storage tank.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
fig. 1 is a schematic diagram of a system flow of the present invention, as shown in fig. 1, an embodiment of the present invention provides a three-effect evaporation system for evaporating and extracting salt from industrial wastewater, which comprises a condensate water preheater 1, a one-effect evaporation chamber 2, a one-effect heating chamber 3, a two-effect evaporation chamber 4, a two-effect heating chamber 5, a three-effect evaporation chamber 6 and a three-effect heating chamber 7, wherein the top end of the one-effect evaporation chamber 2 is connected to one side of the one-effect heating chamber 3 through a steam guide pipe, the output end of the condensate water preheater 1 is communicated to the interior of the one-effect heating chamber 3 through a material guide pipe and a circulating pump, the top end of the one-effect heating chamber 3 is communicated to the interior of the two-effect evaporation chamber 4 through a steam guide pipe, the top end of the two-effect evaporation chamber 4 is communicated to the interior of the two-effect heating chamber 5 through a steam guide pipe, the top end of the two-effect heating chamber 5 is communicated to the interior of the three-effect evaporation chamber 6 through a steam guide pipe, the top end of the three-effect heating chamber 7 is communicated to the interior of the three-effect heating chamber 7 through a steam guide pipe, one side of the three-effect heating chamber 7 is provided with a condenser 8, and the top end of the three-effect heating chamber 7 is communicated to the interior of the condenser 8 through steam guide pipe.
Specifically, the feed liquid is pressurized by the feed pump 10, continuously enters the condensate water preheater 1, exchanges heat with the steam condensate, then enters the first-effect evaporation chamber 2, then enters the first-effect heating chamber 3 through the circulating pump, meanwhile, steam from the outer pipeline enters the shell side of the first-effect heating chamber 3 for heating after passing through the air dividing cylinder 11, secondary steam is generated by boiling evaporation after controlling the pressure scheme in the first-effect heating chamber 3, the secondary steam after evaporation in the first-effect evaporation chamber 2 is used as a second-effect heating source, enters the second-effect evaporation chamber 4 through the steam guide pipe, condensed water in the first-effect heating chamber 3 returns to the condensate water preheater 1 through the first return pipe 12 and the first-effect evaporation chamber 2, exchanges heat with the feed liquid before entering the first-effect heating chamber 3, and simultaneously recovers hot water waste heat, the second-effect evaporation chamber 4 is heated under the action of the secondary steam of the first-effect heating chamber 3, the secondary steam generated by the second-effect evaporation chamber 4 enters the third-effect heating chamber 7 through the third-effect evaporation chamber 6, the secondary steam generated by the second-effect evaporation chamber 4 is used as a heat source for evaporation, the first-effect evaporation chamber 2 enters the second-effect evaporation chamber 4, the second-effect evaporation chamber 4 is discharged into the third-effect evaporation chamber 6 through the third-effect evaporation chamber 6, the second-effect evaporation chamber 4 is used as a second-effect evaporation chamber, and the pressure difference is generated by the second-effect evaporation chamber 6, and the second-effect evaporation chamber is discharged into the third-effect evaporation chamber 4, and the second-effect evaporation chamber is cooled, and finally enters the second-effect evaporation chamber 4 through the second-effect evaporation chamber 6.
In this embodiment, a feed pump 10 is installed on one side of the condensate water preheater 1 through a feed pipe, so as to heat the feed liquid, and the feed liquid continuously enters the condensate water preheater 1, and a sub-cylinder 11 is installed on one side of the first-effect evaporation chamber 2 through a steam guide pipe, so as to control steam to enter a shell side of the first-effect heating chamber 3 for heating.
Further, the bottom end of the first effective heating chamber 3 is connected to one side of the bottom end of the first effective evaporating chamber 2 through a first return pipe 12, and one side of the bottom end of the first effective evaporating chamber 2 is connected to the condensate water inlet end of the condensate water preheater 1 through a condensate water guide pipe to recover condensate water.
Further, the bottom end of the two-effect heating chamber 5 is connected with a second return pipe 13, the bottom end of the second return pipe 13 is communicated to the inside of a liquid storage tank 19 through a condensate water delivery pipe for recovering condensate water, the bottom end of the automatic drainer 9 is communicated to the inside of the liquid storage tank 19 through a condensate water delivery pipe, the output end of the liquid storage tank 19 is communicated to the condensate water inlet end of the condensate water preheater 1 through a pipeline and a return liquid pump in the same way as the above, the bottom end of the three-effect heating chamber 7 is communicated to the inside of a gas-liquid separator 15 through a third return pipe 14 for being used as system supplementing water, and one side of the gas-liquid separator 15 is communicated to the inside of the liquid storage tank 19 through a condensate water delivery pipe.
Further, the bottom of the gas-liquid separator 15 is communicated to the inside of the vortex salt separator 16 through a pipeline, a salt storage chamber 17 is arranged at the bottom of the vortex salt separator 16, the gas-liquid separator 15 is used for separating the concentrated feed liquid from the concentrated feed liquid, the vortex salt separator 16 is used for separating and extracting the salt content of the separated concentrated feed liquid, an automatic drainer 9 is arranged on one side of the condenser 8, the input end and the output end of the automatic drainer 9 are communicated to the inside of the condenser 8 through pipelines, condensed water is led in and discharged into the condenser 8, and a vacuum interface 18 is arranged at the top end of the automatic drainer 9 and used for vacuum drying the inside of the automatic drainer 9.
Although embodiments of the present invention 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 invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a three effect evaporation system for industrial waste water evaporation salt, includes condensate water preheater (1), one effect evaporation chamber (2), one effect heating chamber (3), two effect evaporation chamber (4), two effect heating chamber (5), three effect evaporation chamber (6) and three effect heating chamber (7), its characterized in that: the top of first effect evaporation chamber (2) is in through steam honeycomb duct connection one side of first effect heating chamber (3), the output of condensate water preheater (1) is through material honeycomb duct and circulating pump intercommunication to the inside of first effect heating chamber (3), the top of first effect heating chamber (3) is through steam honeycomb duct intercommunication to the inside of second effect evaporation chamber (4), the top of second effect evaporation chamber (4) is through steam honeycomb duct intercommunication to the inside of second effect heating chamber (5), the top of second effect heating chamber (5) is through steam honeycomb duct intercommunication to inside three effect evaporation chamber (6), the top of three effect evaporation chamber (6) is through steam honeycomb duct intercommunication to inside three effect heating chamber (7), condenser (8) are installed to one side of three effect heating chamber (7), the top of three effect heating chamber (7) is through steam honeycomb duct intercommunication to inside condenser (8).
2. A triple effect evaporation system for evaporation and salt extraction of industrial waste water according to claim 1, wherein: one side of the condensate water preheater (1) is provided with a feed pump (10) through a feed pipe, and one side of the first-effect evaporation chamber (2) is provided with a sub-cylinder (11) through a steam guide pipe.
3. A triple effect evaporation system for evaporation and salt extraction of industrial waste water according to claim 1, wherein: the bottom end of the first-effect heating chamber (3) is connected to one side of the bottom end of the first-effect evaporating chamber (2) through a first return pipe (12), and one side of the bottom end of the first-effect evaporating chamber (2) is connected to the condensate water inlet end of the condensate water preheater (1) through a condensate water guide pipe.
4. A triple effect evaporation system for evaporation and salt extraction of industrial waste water according to claim 1, wherein: the bottom end of the two-effect heating chamber (5) is connected with a second return pipe (13), and the bottom end of the second return pipe (13) is communicated to the inside of the liquid storage tank (19) through a condensed water delivery pipe.
5. A triple effect evaporation system for evaporation and salt extraction of industrial waste water according to claim 1, wherein: the bottom of triple effect heating chamber (7) is inside through third back flow (14) intercommunication to vapour and liquid separator (15), one side of vapour and liquid separator (15) is inside through comdenstion water honeycomb duct intercommunication to reservoir (19), the inside of swirl salt separator (16) is passed through to the bottom of vapour and liquid separator (15) through pipeline intercommunication, the bottom of swirl salt separator (16) is provided with salt storage room (17).
6. A triple effect evaporation system for evaporation and salt extraction of industrial waste water according to claim 1, wherein: an automatic drainer (9) is arranged on one side of the condenser (8), the input end and the output end of the automatic drainer (9) are communicated to the inside of the condenser (8) through pipelines, and a vacuum interface (18) is arranged at the top end of the automatic drainer (9).
7. A triple effect evaporation system for evaporating and extracting salt from industrial waste water as claimed in claim 6, wherein: the bottom of the automatic drainer (9) is communicated to the inside of the liquid storage tank (19) through a condensed water delivery pipe, and the output end of the liquid storage tank (19) is communicated to the condensed water inlet end of the condensed water preheater (1) through a pipeline and a return liquid pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310516359.3A CN116462260A (en) | 2023-05-09 | 2023-05-09 | A triple effect evaporation system for industrial waste water evaporation salt extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310516359.3A CN116462260A (en) | 2023-05-09 | 2023-05-09 | A triple effect evaporation system for industrial waste water evaporation salt extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116462260A true CN116462260A (en) | 2023-07-21 |
Family
ID=87180765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310516359.3A Pending CN116462260A (en) | 2023-05-09 | 2023-05-09 | A triple effect evaporation system for industrial waste water evaporation salt extraction |
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| Country | Link |
|---|---|
| CN (1) | CN116462260A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117902659A (en) * | 2024-03-18 | 2024-04-19 | 南京依涛环保科技有限公司 | A method and process device for deep treatment of desulfurization wastewater |
| CN119409256A (en) * | 2024-11-29 | 2025-02-11 | 南京环保产业创新中心有限公司 | A triple-effect evaporation treatment device and method for salt-containing sewage |
-
2023
- 2023-05-09 CN CN202310516359.3A patent/CN116462260A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117902659A (en) * | 2024-03-18 | 2024-04-19 | 南京依涛环保科技有限公司 | A method and process device for deep treatment of desulfurization wastewater |
| CN119409256A (en) * | 2024-11-29 | 2025-02-11 | 南京环保产业创新中心有限公司 | A triple-effect evaporation treatment device and method for salt-containing sewage |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20230721 |
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