CN221536624U - Industrial byproduct sodium sulfate recycling device - Google Patents
Industrial byproduct sodium sulfate recycling device Download PDFInfo
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- CN221536624U CN221536624U CN202322830009.2U CN202322830009U CN221536624U CN 221536624 U CN221536624 U CN 221536624U CN 202322830009 U CN202322830009 U CN 202322830009U CN 221536624 U CN221536624 U CN 221536624U
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- Prior art keywords
- sodium sulfate
- carbonization
- tank
- tower
- ammonia
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- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims abstract description 40
- 229910052938 sodium sulfate Inorganic materials 0.000 title claims abstract description 40
- 235000011152 sodium sulphate Nutrition 0.000 title claims abstract description 40
- 239000006227 byproduct Substances 0.000 title claims abstract description 34
- 238000004064 recycling Methods 0.000 title claims abstract description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000003763 carbonization Methods 0.000 claims abstract description 47
- 238000002425 crystallisation Methods 0.000 claims abstract description 28
- 230000008025 crystallization Effects 0.000 claims abstract description 28
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 26
- 238000001704 evaporation Methods 0.000 claims abstract description 24
- 230000008020 evaporation Effects 0.000 claims abstract description 24
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 17
- 238000004821 distillation Methods 0.000 claims abstract description 17
- 239000012452 mother liquor Substances 0.000 claims abstract description 17
- 230000008014 freezing Effects 0.000 claims abstract description 14
- 238000007710 freezing Methods 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims abstract description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 42
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 24
- 239000001569 carbon dioxide Substances 0.000 claims description 21
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 21
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 17
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 17
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 17
- 239000001099 ammonium carbonate Substances 0.000 claims description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 13
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 12
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 12
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 12
- 238000009656 pre-carbonization Methods 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract description 10
- 235000011130 ammonium sulphate Nutrition 0.000 abstract description 10
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 abstract description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 abstract 1
- 239000000047 product Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 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
- 230000009615 deamination Effects 0.000 description 2
- 238000006481 deamination reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000005649 metathesis reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Fertilizers (AREA)
Abstract
The utility model discloses an industrial byproduct sodium sulfate recycling device, which comprises a carbonization system, a double decomposition reaction system, an ammonia evaporation system, a freezing system and an evaporation crystallization system; the discharge port of the carbonization system and the outlet of the industrial byproduct sodium sulfate storage tank are connected to a premixing tank of the double decomposition reaction system together; the double decomposition reaction system comprises a premixing tank, a double decomposition reactor, a centrifugal machine A, a dryer A and a calciner which are connected in sequence; the ammonia distillation system comprises an ammonia distillation tower which is connected with a mother liquor outlet of the centrifugal machine A; the refrigerating system comprises a refrigerating device, and a transition tank is connected between a feed inlet of the refrigerating device and a mother liquor outlet of the ammonia still; the evaporation crystallization system comprises an evaporation crystallization device, a centrifugal machine B and a dryer B which are sequentially connected, and a feed inlet of the evaporation crystallization device is connected with a freezing mother liquor outlet of the freezing device. The utility model can be widely applied to the recycling of byproduct sodium sulfate in the industry to produce industrial sodium bicarbonate, soda and agricultural ammonium sulfate.
Description
Technical Field
The utility model belongs to the technical field of chemical industry, relates to recycling of industrial byproduct sodium sulfate, and in particular relates to a device for recycling of industrial byproduct sodium sulfate.
Background
With the promotion of zero emission of industrial wastewater in China, the yields of industrial byproducts sodium sulfate and sodium chloride produced from the zero emission of industrial wastewater are increasingly increased. Aiming at the industrial byproduct sodium sulfate, the existing market has large saturation, few available channels, a large amount of byproduct sodium sulfate is piled up in industrial factories, the economic benefit is small, a heavy economic burden is brought to enterprises, and meanwhile, the environment protection and the potential safety hazard are large. In view of the above, it is necessary to develop a recycling device for industrial byproduct sodium sulfate, so as to solve the problem of low benefit and no utilization value of industrial byproduct sodium sulfate.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model aims to provide a recycling device for industrial byproduct sodium sulfate, which solves the problems of low benefit and no utilization value of industrial byproduct sodium sulfate.
In order to solve the technical problems, the utility model adopts the following technical scheme:
an industrial byproduct sodium sulfate recycling device comprises a carbonization system, a double decomposition reaction system, an ammonia evaporation system, a refrigeration system and an evaporation crystallization system;
The carbonization system can produce ammonium bicarbonate, and a discharge port of the carbonization system and an outlet of an industrial byproduct sodium sulfate storage tank are connected to a premixing tank of the double decomposition reaction system together;
The double decomposition reaction system can produce sodium bicarbonate and sodium carbonate and comprises a premixing tank, a double decomposition reactor, a centrifugal machine A, a dryer A and a calciner which are connected in sequence;
the ammonia distillation system comprises an ammonia distillation tower which is connected with a mother liquor outlet of the centrifugal machine A;
the refrigerating system comprises a refrigerating device, and a transition tank is connected between a feed inlet of the refrigerating device and a mother liquor outlet of the ammonia distillation tower;
The evaporation crystallization system comprises an evaporation crystallization device, a centrifugal machine B and a dryer B which are sequentially connected, and a feed inlet of the evaporation crystallization device is connected with a freezing mother liquor outlet of the freezing device.
The utility model also comprises the following technical characteristics:
specifically, the carbonization system comprises a pre-carbonization tower, a main carbonization tower, a carbon dioxide purifier, an ammonia water tank, a denitrification device and an ammonium bicarbonate tank.
Specifically, the ammonia water tank is connected with a denitrification device; the ammonia water tank, the pre-carbonization tower and the main carbonization tower are sequentially connected, and the outlet of the carbon dioxide purifier is also connected to the main carbonization tower; the discharge port of the main carbonization tower is connected with an ammonium bicarbonate tank; the discharge port of the ammonium bicarbonate tank is connected to the premixing tank.
Specifically, the gas outlet of the ammonia still is connected to a pre-carbonization tower of the carbonization system.
Specifically, a carbon dioxide compressor is arranged between the carbon dioxide purifier and the main carbonization tower.
In particular, the crystallization outlet of the freezing device is connected to the premixing tank.
Specifically, the transition tank, the evaporation crystallization device and the centrifuge B are all connected to a salt impurity drying device.
In particular, the gas outlet of the calciner is connected to a carbonization system.
Compared with the prior art, the utility model has the following technical effects:
The utility model can be used for recycling industrial byproduct sodium sulfate generated in industries or areas such as coal chemical industry, petrochemical industry, metallurgy, rare earth, medicine, industrial park and the like, has wide application, low production cost and high economic value of products, recycles carbon dioxide generated in the industrial field while recycling the byproduct sodium sulfate, plays a role in carbon emission reduction, can produce sodium bicarbonate or soda serving as a common medicament in the industry or water treatment industry, and can produce agricultural-grade ammonium sulfate.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
The meaning of each reference numeral in the figures is:
11. The device comprises a pre-carbonization tower 12, a main carbonization tower 13, a carbon dioxide purifier 14, an ammonia water tank 15, a denitrification device 16 and an ammonium bicarbonate tank; 21. a premixing tank 22, a double decomposition reactor 23, a centrifugal machine A24, a dryer A25 and a calciner; 31. an ammonia distillation tower; 41. a refrigerating device; 51. the evaporation crystallization device, 52, centrifuges B,53, dryer B;6. a transition tank; 7. a salt impurity drying device; 8. industrial byproduct sodium sulfate storage tank.
Detailed Description
The following specific embodiments of the present utility model are provided, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of the present utility model fall within the protection scope of the present utility model.
Example 1:
As shown in FIG. 1, the embodiment provides a recycling device for industrial byproduct sodium sulfate, which comprises a carbonization system, a double decomposition reaction system, an ammonia evaporation system, a refrigeration system and an evaporation crystallization system. The device can be widely applied to the recycling of byproduct sodium sulfate in the industry, and can produce industrial sodium bicarbonate and soda and agricultural industrial ammonium sulfate.
The carbonization system can produce ammonium bicarbonate, and the discharge port of the carbonization system and the outlet of the industrial byproduct sodium sulfate storage tank 8 are connected to the premixing tank 21 of the double decomposition reaction system. Washing and purifying industrial carbon dioxide, and then enabling the industrial carbon dioxide to enter a carbonization tower to carry out carbonization reaction with ammonia water to generate ammonium bicarbonate; specifically, the carbonization system comprises a pre-carbonization tower 11, a main carbonization tower 12, a carbon dioxide purifier 13, an ammonia water tank 14, a denitrification device 15 and an ammonium bicarbonate tank 16; the ammonia water tank 14 is connected with a denitrification device 15; the ammonia water tank 14, the pre-carbonization tower 11 and the main carbonization tower 12 are connected in sequence, and the outlet of the carbon dioxide purifier 13 is also connected to the main carbonization tower 12; the discharge port of the main carbonization tower 12 is connected with an ammonium bicarbonate tank 16; the outlet of the ammonium bicarbonate tank 16 is connected to a premixing tank 21.
The metathesis reaction system is capable of producing baking soda and sodium carbonate and includes a premix tank 21, a metathesis reactor 22, a centrifuge A23, a dryer A24, and a calciner 25, which are connected in sequence. And (3) enabling the industrial byproduct sodium sulfate, ammonium bicarbonate generated by the carbonization system and a certain proportion of water to enter a premixing tank, uniformly mixing, entering a double decomposition reactor, generating sodium bicarbonate, performing centrifugal separation by a centrifugal machine A to obtain sodium bicarbonate wet salt with a certain water content, drying the sodium bicarbonate wet salt by a dryer A to obtain dried sodium bicarbonate, and enabling the sodium bicarbonate to enter a calciner to obtain a soda product after calcination.
The ammonia distillation system comprises an ammonia distillation tower 31, and the ammonia distillation tower 31 is connected with a mother liquor outlet of a centrifugal machine A23; and (3) allowing the mother liquor of the centrifugal machine A to enter an ammonia distillation system for deamination.
The refrigerating system comprises a refrigerating device 41, and a transition tank 6 is connected between a feed inlet of the refrigerating device 41 and a mother liquor outlet of the ammonia distillation tower 31; and (5) introducing the deaminated mother liquor into a refrigerating device to recycle excessive sodium sulfate in the system.
The evaporative crystallization system comprises an evaporative crystallization device 51, a centrifugal machine B52 and a dryer B53 which are sequentially connected, wherein a feed inlet of the evaporative crystallization device 51 is connected with a freezing mother liquor outlet of the freezing device 41; the frozen mother solution enters an evaporation crystallization device, and is subjected to high-temperature evaporation crystallization to obtain ammonium sulfate, and the ammonium sulfate product of agricultural grade is obtained after further centrifugal dehydration and drying.
The gas outlet of the ammonia still 31 is connected to the pre-carbonization tower 11 of the carbonization system; specifically, the gas generated by the ammonia still is further recycled into the carbonization system for reuse through the recycling tower.
A carbon dioxide compressor is arranged between the carbon dioxide purifier 13 and the main carbonization tower 12; and removing carbon dioxide of impurities, and entering a carbonization main tower through a carbon dioxide compressor.
The crystallization outlet of the freezing device 41 is connected to the premixing tank 21; specifically, the excessive sodium sulfate of the recovery system of the freezing device is frozen, and the sodium sulfate decahydrate enters a hot melting device to be melted, so that the obtained sodium sulfate enters a premixing tank to be reused.
The transition tank 6, the evaporative crystallization device 51 and the centrifuge B52 are all connected to a salt impurity drying device 7 to remove impurities from the system.
The gas outlet of the calciner 25 is connected to a carbonization system; the carbon dioxide generated by calcination is returned to the carbonization system for further recycling.
When the utility model is operated, industrial carbon dioxide enters a carbonization tower to carry out carbonization reaction with ammonia water after being washed and purified, and ammonium bicarbonate is generated; the industrial byproduct sodium sulfate, ammonium bicarbonate generated by a carbonization system and a certain proportion of water enter a premixing tank, are mixed uniformly and enter a double decomposition reactor, sodium bicarbonate is generated and is centrifugally separated by a centrifugal machine A to obtain sodium bicarbonate wet salt with a certain water content, the sodium bicarbonate wet salt is dried by a dryer A to obtain dry sodium bicarbonate, the sodium bicarbonate enters a calciner to be calcined to obtain a soda product, and carbon dioxide generated by calcination returns to the carbonization system for further recycling; the mother liquor of the centrifugal machine A enters an ammonia distillation system to carry out deamination, gas generated by the ammonia distillation tower is further recovered by a recovery tower and enters a carbonization system to be reused, the deaminated mother liquor enters excessive sodium sulfate of a recovery system of a refrigerating device, and the chilled sodium sulfate decahydrate enters a hot melting device to be melted to obtain sodium sulfate and enters a premixing tank to be reused; the frozen mother solution enters an evaporation crystallization device, ammonium sulfate is obtained through high-temperature evaporation crystallization, and an agricultural grade ammonium sulfate product is obtained after further centrifugal dehydration and drying; the evaporation crystallization device discharges mother liquor periodically to remove impurities in the system.
The utility model has the advantages that the primary sodium utilization rate of the industrial byproduct sodium sulfate is 88 percent, the sodium utilization rate reaches more than 99 percent after the sodium sulfate is recovered by a refrigerating system, the purity of soda products is more than 98.5 percent, and the requirements of national standard GB/T210-2022 (industrial sodium carbonate) are met; the purity of the ammonium sulfate is more than 98 percent, and the nitrogen content of the ammonium sulfate and other products in GBT535-2020 (fertilizer grade ammonium sulfate standard) is more than 19 percent.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (8)
1. The industrial byproduct sodium sulfate recycling device is characterized by comprising a carbonization system, a double decomposition reaction system, an ammonia evaporation system, a freezing system and an evaporation crystallization system;
The carbonization system can produce ammonium bicarbonate, and a discharge port of the carbonization system and an outlet of an industrial byproduct sodium sulfate storage tank (8) are connected to a premixing tank (21) of the double decomposition reaction system together;
The double decomposition reaction system can produce sodium bicarbonate and sodium carbonate and comprises a premixing tank (21), a double decomposition reactor (22), a centrifugal machine A (23), a dryer A (24) and a calciner (25) which are connected in sequence;
The ammonia distillation system comprises an ammonia distillation tower (31), and the ammonia distillation tower (31) is connected with a mother liquor outlet of the centrifugal machine A (23);
The refrigerating system comprises a refrigerating device (41), and a transition tank (6) is connected between a feed inlet of the refrigerating device (41) and a mother liquor outlet of the ammonia distillation tower (31);
The evaporation crystallization system comprises an evaporation crystallization device (51), a centrifugal machine B (52) and a dryer B (53) which are sequentially connected, wherein a feed inlet of the evaporation crystallization device (51) is connected with a freezing mother liquor outlet of a freezing device (41).
2. The industrial byproduct sodium sulfate recycling apparatus according to claim 1, wherein the carbonization system comprises a pre-carbonization tower (11), a main carbonization tower (12), a carbon dioxide purifier (13), an ammonia water tank (14), a denitrification device (15) and an ammonium bicarbonate tank (16).
3. The industrial byproduct sodium sulfate recycling device according to claim 2, wherein the ammonia water tank (14) is connected with a denitrification device (15); the ammonia water tank (14), the pre-carbonization tower (11) and the main carbonization tower (12) are connected in sequence, and the outlet of the carbon dioxide purifier (13) is also connected to the main carbonization tower (12); the discharge port of the main carbonization tower (12) is connected with an ammonium bicarbonate tank (16); the discharge port of the ammonium bicarbonate tank (16) is connected to a premixing tank (21).
4. The apparatus for recycling industrial byproduct sodium sulfate according to claim 2, wherein a gas outlet of the ammonia still (31) is connected to a pre-carbonization tower (11) of the carbonization system.
5. The industrial byproduct sodium sulfate recycling apparatus according to claim 2, wherein a carbon dioxide compressor is provided between the carbon dioxide purifier (13) and the main carbonization tower (12).
6. The apparatus for recycling industrial byproduct sodium sulfate according to claim 1, wherein a crystallization outlet of the freezing apparatus (41) is connected to the premixing tank (21).
7. The industrial byproduct sodium sulfate recycling device according to claim 1, wherein the transition tank (6), the evaporative crystallization device (51) and the centrifuge B (52) are connected to a mixed salt drying device (7).
8. The industrial byproduct sodium sulfate recycling apparatus as claimed in claim 1, wherein a gas outlet of the calciner (25) is connected to a carbonization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322830009.2U CN221536624U (en) | 2023-10-20 | 2023-10-20 | Industrial byproduct sodium sulfate recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322830009.2U CN221536624U (en) | 2023-10-20 | 2023-10-20 | Industrial byproduct sodium sulfate recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221536624U true CN221536624U (en) | 2024-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322830009.2U Active CN221536624U (en) | 2023-10-20 | 2023-10-20 | Industrial byproduct sodium sulfate recycling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221536624U (en) |
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2023
- 2023-10-20 CN CN202322830009.2U patent/CN221536624U/en active Active
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