CN220657491U - Ethylene sulfite production equipment - Google Patents
Ethylene sulfite production equipment Download PDFInfo
- Publication number
- CN220657491U CN220657491U CN202322293671.9U CN202322293671U CN220657491U CN 220657491 U CN220657491 U CN 220657491U CN 202322293671 U CN202322293671 U CN 202322293671U CN 220657491 U CN220657491 U CN 220657491U
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- water
- pipe
- connecting pipe
- kettle body
- water tank
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- WDXYVJKNSMILOQ-UHFFFAOYSA-N 1,3,2-dioxathiolane 2-oxide Chemical compound O=S1OCCO1 WDXYVJKNSMILOQ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 2
- RBBXSUBZFUWCAV-UHFFFAOYSA-N ethenyl hydrogen sulfite Chemical compound OS(=O)OC=C RBBXSUBZFUWCAV-UHFFFAOYSA-N 0.000 claims 6
- 239000003651 drinking water Substances 0.000 claims 2
- 235000020188 drinking water Nutrition 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 27
- 238000001816 cooling Methods 0.000 abstract description 16
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 5
- 238000004821 distillation Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002000 Electrolyte additive Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BDUPRNVPXOHWIL-UHFFFAOYSA-N dimethyl sulfite Chemical compound COS(=O)OC BDUPRNVPXOHWIL-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012450 pharmaceutical intermediate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
Abstract
The utility model discloses a production device of ethylene sulfite, which relates to the technical field of ethylene sulfite production and comprises a kettle body, wherein one side of the top end of the kettle body is connected with a feed pipe, the top end of the feed pipe is in threaded connection with a first sealing cover, the other side of the top end of the kettle body is provided with a detection component, and the outside of the kettle body is provided with a temperature regulation component; the beneficial effects of the utility model are as follows: through the temperature regulation assembly, when the temperature is required to be raised, the heating rod is opened, the temperature in the kettle body is raised, when the temperature is too high, the water pump is started, cold water flows in the water cooling pipe and absorbs the heat in the kettle body, and then the water tank is returned from the second connecting pipe, so that the temperature of equipment can be conveniently regulated by workers; through the detection component that sets up, in the production process, the gaseous air vent that evaporates gets into the detection incasement, and the methanol content in the gaseous detection instrument detection of methyl alcohol, when methyl alcohol content is lower or when not, the reaction is over, is convenient for judge.
Description
Technical Field
The utility model relates to production equipment, in particular to production equipment for ethylene sulfite, and belongs to the technical field of ethylene sulfite production.
Background
The ethylene sulfite belongs to an organic annular film forming additive in the electrolyte additive of the lithium ion battery, can improve the low-temperature performance of the electrolyte, and ensures that the lithium ion battery has excellent storage stability; the derivative can also be used for organic synthesis and pharmaceutical intermediates, the ethylene sulfite takes dimethyl sulfite and ethylene glycol as raw materials, the temperature is gradually increased from 60 ℃ to 70 ℃ to 160 ℃ to 180 ℃, methanol generated in the reaction process is continuously removed, and if the methanol is not distilled out, the reaction is completely carried out, the production condition is complex, and production equipment of the ethylene sulfite is needed.
The 'a ethylene sulfite production equipment' disclosed in the application number of CN201921464132.4 is also an increasingly mature technology, and comprises a reaction kettle (1), a distillation kettle (6), a rectification kettle and a product receiving tank (9), wherein the inlet of the reaction kettle (1) is respectively connected with a reaction raw material adding tank through a pipeline, and the outlet of the reaction kettle (1) is sequentially connected with the distillation kettle (6), the rectification kettle and the product receiving tank (9) through pipelines; a methanol storage tank (5) is arranged between the reaction kettle (1) and the distillation kettle (6), and the outlet of the reaction kettle (1) and the outlet of the distillation kettle (6) are respectively and simultaneously connected with the methanol storage tank (5) through pipelines. The utility model adopts the transesterification method to prepare the ethylene sulfite, thereby greatly reducing production equipment, reducing labor cost, avoiding three wastes, collecting and storing byproduct methanol in a centralized way, not only reducing side reaction, but also recycling the byproduct methanol, and improving the product purity, wherein the product purity is more in accordance with sustainable and green development requirements, and the continuous reaction device of the ethylene sulfite disclosed by the application number of CN202221030078.4 comprises an ethylene glycol feeding pipeline, a thionyl chloride feeding pipeline, a mixing device, a microchannel reactor group, a gas-liquid separation device and a reaction liquid heating device; the ethylene glycol feeding pipeline and the sulfoxide chloride feeding pipeline are respectively and independently connected with a feeding port of the mixing device; the microchannel reactor group comprises at least 2 microchannel reactors; the feed inlet of the microchannel reactor is connected with the discharge outlet of the mixing device; the discharge port of the microchannel reactor is connected with the feed port of the gas-liquid separation device; and a feed inlet of the reaction liquid heating device is connected with a liquid outlet of the gas-liquid separation device. The utility model realizes continuous preparation of ethylene sulfite by microchannel reaction, simplifies operation steps, reduces labor intensity, improves production efficiency and productivity, and can carry out more refined production control.
The ethylene sulfite production equipment in the two disclosed technologies has the following defects: the temperature during the reaction is difficult to control, so that the product is lost, the generated methanol is inconvenient to detect, and whether the reaction process is finished or not is inconvenient to judge, so that the utility model provides the ethylene sulfite production equipment.
Disclosure of Invention
The utility model aims to provide a production device of ethylene sulfite, which solves the problems that the reaction temperature is difficult to control and whether the reaction is ended or not is inconvenient to judge in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sulfurous acid ethylene ester production facility, includes the cauldron body, one side on cauldron body top is connected with the inlet pipe, the top threaded connection of inlet pipe has first sealed lid, the opposite side on cauldron body top is equipped with detection component, the outside of the cauldron body is equipped with temperature regulation subassembly, the bottom of the cauldron body is equipped with the stabilizer blade, the middle part of the bottom of the cauldron body is connected with the discharging pipe, the bottom threaded connection of discharging pipe has the sealed lid of second.
As a preferable technical scheme of the utility model, the detection assembly comprises a detection box, a vent hole, a methanol detector and an air outlet pipe, wherein the detection box is connected to the other side of the top end of the kettle body, the vent hole is formed between the detection box and the kettle body, the middle part of the inner wall of the top end of the detection box is connected with the methanol detector, and the top end of the detection box is connected with the air outlet pipe.
As a preferable technical scheme of the utility model, the temperature adjusting component comprises a heat insulation shell, a heat insulation ring, a heating rod, a water cooling pipe, a first connecting pipe and a second connecting pipe, wherein the heat insulation shell is connected to the outside of the kettle body, the middle part of the heat insulation shell is connected with the heat insulation ring, the top of the heat insulation shell is connected with the heating rod, the bottom of the heat insulation shell is connected with the water cooling pipe, one end of the water cooling pipe is connected with the first connecting pipe, the other end of the water cooling pipe is connected with the second connecting pipe, and both the first connecting pipe and the second connecting pipe penetrate through the heat insulation shell.
As a preferable technical scheme of the utility model, the bottom of the front surface of the heat preservation shell is connected with a bearing plate, one side of the top end of the bearing plate is connected with a water tank, one end of a second connecting pipe is connected with the top end of the water tank, the other side of the top end of the bearing plate is connected with a water pump, one end of a first connecting pipe is connected with a water outlet of the water pump, a water inlet of the water pump is connected with a water suction pipe, and one end of the water suction pipe is connected with the water tank.
As a preferable technical scheme of the utility model, the top end of the water tank is connected with a semiconductor refrigerating sheet, the cold head of the semiconductor refrigerating sheet penetrates through the water tank, and the cold head of the semiconductor refrigerating sheet is positioned below the liquid level.
As a preferable technical scheme of the utility model, the top end of the water tank is connected with a water adding pipe, and the top end of the water adding pipe is connected with a third sealing cover in a threaded manner.
As a preferable technical scheme of the utility model, the middle part of the top end of the kettle body is connected with a motor frame, a driving motor is arranged in the motor frame, the middle part of the top end of the kettle body is rotationally connected with a stirring shaft through a bearing, the top end of the stirring shaft is connected with a transmission shaft of the driving motor, and the outer wall of the stirring shaft is connected with a stirring rod.
Compared with the related art, the ethylene sulfite production equipment provided by the utility model has the following beneficial effects:
1. through the temperature regulation assembly, when the temperature is required to be raised, the heating rod is opened, the temperature inside the heat preservation shell and the kettle body is raised, when the temperature is too high, the water pump is started, water in the water tank is extracted into the first connecting pipe from the water suction pipe, cold water flows in the water cooling pipe, heat in the kettle body is absorbed, and then the water returns into the water tank from the second connecting pipe, so that the temperature of production equipment can be conveniently regulated by workers, and the reaction condition can be timely met;
2. through the detection component that sets up, in the production process, the gaseous air vent that evaporates gets into the detection incasement, and the methanol content in the gaseous detection instrument detection of methyl alcohol, when methyl alcohol content is lower or when not, the reaction is over, is convenient for judge.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;
fig. 4 is a schematic cross-sectional structure of the water tank of the present utility model.
In the figure: 1. a kettle body; 2. a support leg; 3. a second sealing cover; 4. a detection assembly; 5. a feed pipe; 6. a first sealing cover; 7. a discharge pipe; 8. a temperature regulating assembly; 9. a carrying plate; 10. a water tank; 11. a water pump; 12. a water pumping pipe; 13. a cooling sheet; 14. a water supply pipe; 15. a third sealing cover; 16. a motor frame; 17. a driving motor; 18. a stirring shaft; 19. a stirring rod; 401. a detection box; 402. a vent hole; 403. a methanol detector; 404. an air outlet pipe; 801. a thermal insulation shell; 802. a heat insulating ring; 803. a heating rod; 804. a water-cooled tube; 805. a first connection pipe; 806. and a second connection pipe.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1-4, the utility model provides a production device of ethylene sulfite, comprising a kettle body 1, wherein one side of the top end of the kettle body 1 is connected with a feed pipe 5, the top end of the feed pipe 5 is in threaded connection with a first sealing cover 6, the other side of the top end of the kettle body 1 is provided with a detection component 4, the outside of the kettle body 1 is provided with a temperature adjusting component 8, the bottom end of the kettle body 1 is provided with two support legs 2, the middle part of the bottom end of the kettle body 1 is connected with a discharge pipe 7, and the bottom end of the discharge pipe 7 is in threaded connection with a second sealing cover 3;
the middle part of the top end of the kettle body 1 is connected with a motor frame 16, a driving motor 17 is arranged in the motor frame 16, the middle part of the top end of the kettle body 1 is rotationally connected with a stirring shaft 18 through a bearing, the top end of the stirring shaft 18 is connected with a transmission shaft of the driving motor 17, the outer wall of the stirring shaft 18 is connected with a stirring rod 19, the driving motor 17 is started, the driving motor 17 drives the stirring shaft 18 and the stirring rod 19 to rotate, the reaction medicaments are uniformly mixed, and the reaction speed is accelerated;
the detection assembly 4 comprises a detection box 401, a vent hole 402, a methanol detector 403 and an air outlet pipe 404, wherein the detection box 401 is connected to the other side of the top end of the kettle body 1, the vent hole 402 is formed between the detection box 401 and the kettle body 1, the middle part of the inner wall of the top end of the detection box 401 is connected with the methanol detector 403, the top end of the detection box 401 is connected with the air outlet pipe 404, the evaporated gas enters the detection box 401 from the vent hole 402, the methanol detector 403 detects the methanol content in the gas, and when the methanol content is lower or not, the reaction is ended, so that the judgment is convenient;
specifically, as shown in fig. 1, 2 and 3, in the production process, the distilled gas enters the detection box 401 from the vent hole 402, and the methanol detector 403 detects the methanol content in the gas, when the methanol content is low or not, the reaction is finished, so that the judgment is convenient, and the gas containing methanol is introduced into the methanol treatment tank from the gas outlet pipe 404 to treat the methanol.
Example 2:
the temperature adjusting component 8 comprises a heat insulation shell 801, a heat insulation ring 802, a heating rod 803, a water cooling pipe 804, a first connecting pipe 805 and a second connecting pipe 806, wherein the heat insulation shell 801 is connected to the outside of the kettle body 1, the middle part of the heat insulation shell 801 is connected with the heat insulation ring 802, the top of the heat insulation shell 801 is connected with the heating rod 803, the bottom of the heat insulation shell 801 is connected with the water cooling pipe 804, one end of the water cooling pipe 804 is connected with the first connecting pipe 805, the other end of the water cooling pipe 804 is connected with the second connecting pipe 806, the first connecting pipe 805 and the second connecting pipe 806 penetrate through the heat insulation shell 801, when the temperature needs to be raised, the heating rod 803 is opened, the temperature inside the heat insulation shell 801 and the kettle body 1 is raised, cold water is introduced into the first connecting pipe 805 when the temperature is too high, the cold water flows in the water cooling pipe 804 and flows out of the second connecting pipe 806, heat in the kettle body 1 is taken away, and the reaction temperature is convenient to adjust;
the bottom of the front surface of the heat preservation shell 801 is connected with a bearing plate 9, one side of the top end of the bearing plate 9 is connected with a water tank 10, one end of a second connecting pipe 806 is connected with the top end of the water tank 10, the other side of the top end of the bearing plate 9 is connected with a water pump 11, one end of a first connecting pipe 805 is connected with a water outlet of the water pump 11, a water inlet of the water pump 11 is connected with a water suction pipe 12, one end of the water suction pipe 12 is connected with the water tank 10, the water pump 11 is started, water in the water tank 10 is pumped into the first connecting pipe 805 from the water suction pipe 12, and then the water returns into the water tank 10 from the second connecting pipe 806, so that cooling water can be recycled, and resource waste is reduced;
the top end of the water tank 10 is connected with a semiconductor refrigerating sheet 13, a cold head of the semiconductor refrigerating sheet 13 penetrates through the water tank 10, the cold head of the semiconductor refrigerating sheet 13 is positioned below the liquid level, the semiconductor refrigerating sheet 13 is opened, water returned into the water tank 10 is refrigerated again and then enters the next cycle, and the cooling effect is improved;
the top end of the water tank 10 is connected with a water adding pipe 14, the top end of the water adding pipe 14 is connected with a third sealing cover 15 in a threaded manner, when the temperature is reduced, a small part of water is consumed, the third sealing cover 15 is opened, and water is supplemented from the water adding pipe 14;
specifically, as shown in fig. 1, 2 and 4, when the temperature needs to be raised, the heating rod 803 is opened to raise the temperature inside the heat insulation shell 801 and the kettle body 1, when the temperature is too high, the water pump 11 is started to pump water in the water tank 10 from the water pumping pipe 12 to the first connecting pipe 805, cold water flows in the water cooling pipe 804 to absorb heat inside the kettle body 1, and then the water tank 10 is returned from the second connecting pipe 806, so that the temperature of production equipment can be conveniently adjusted by workers, and the reaction condition can be timely satisfied.
When the kettle is used, firstly, the reaction agent is added from the feed pipe 5, then, the driving motor 17 is started, the driving motor 17 drives the stirring shaft 18 and the stirring rod 19 to rotate, the reaction agent is uniformly mixed, then, the heating rod 803 is opened, the temperature inside the heat insulation shell 801 and the kettle body 1 is increased until the temperature inside the kettle body 1 meets the reaction condition, when the temperature inside the kettle body 1 is overhigh, the water pump 11 is started, water in the water tank 10 is pumped from the water suction pipe 12 into the first connecting pipe 805, cold water flows in the water cooling pipe 804, heat inside the kettle body 1 is absorbed, then, the water returns to the water tank 10 from the second connecting pipe 806, the semiconductor refrigerating sheet 13 is opened, the water returned to the water tank 10 enters the next circulation after being refrigerated again, the cooling effect is increased, the temperature of the production equipment is conveniently adjusted by workers, the reaction condition is timely met, when the temperature is reduced, a small part of the water is consumed, the third sealing cover 15 is opened, and water is supplemented from the water adding pipe 14.
In the production process, the distilled gas enters the detection box 401 from the vent hole 402, the methanol detector 403 detects the methanol content in the gas, when the methanol content is lower or not, the reaction is finished, the judgment is convenient, and the gas containing the methanol is introduced into the methanol treatment tank from the gas outlet pipe 404 to treat the methanol.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a sulfurous acid ethylene ester production facility, includes the cauldron body (1), its characterized in that, one side on cauldron body (1) top is connected with inlet pipe (5), the top threaded connection of inlet pipe (5) has first sealed lid (6), the opposite side on cauldron body (1) top is equipped with detection component (4), the outside on cauldron body (1) is equipped with temperature regulation subassembly (8), the bottom of cauldron body (1) is equipped with stabilizer blade (2), the middle part of cauldron body (1) bottom is connected with discharging pipe (7), the bottom threaded connection of discharging pipe (7) has sealed lid (3) of second.
2. A vinyl sulfite production facility as claimed in claim 1, wherein: the utility model discloses a detecting assembly (4), including detecting case (401), air vent (402), methyl alcohol detector (403) and outlet duct (404), detecting case (401) are connected the opposite side on cauldron body (1) top, air vent (402) are seted up detecting case (401) with between the cauldron body (1), detecting case (401) top inner wall's middle part is connected with methyl alcohol detector (403), detecting case (401) top is connected with outlet duct (404).
3. A vinyl sulfite production facility as claimed in claim 1, wherein: the utility model provides a temperature regulation subassembly (8) is including heat preservation shell (801), heat insulating ring (802), heating rod (803), water-cooled tube (804), first connecting pipe (805) and second connecting pipe (806), heat preservation shell (801) are connected the outside of cauldron body (1), the middle part of heat preservation shell (801) is connected with heat insulating ring (802), the top of heat preservation shell (801) is connected with heating rod (803), the bottom of heat preservation shell (801) is connected with water-cooled tube (804), the one end of water-cooled tube (804) is connected with first connecting pipe (805), the other end of water-cooled tube (804) is connected with second connecting pipe (806), first connecting pipe (805) with second connecting pipe (806) all run through heat preservation shell (801).
4. A vinyl sulfite production facility as claimed in claim 3, wherein: the utility model discloses a water tank, including heat preservation shell (801), bearing plate (9), water tank (10) are connected to positive bottom of heat preservation shell (801), one side on bearing plate (9) top is connected with water tank (10), one end of second connecting pipe (806) with the top of water tank (10) is connected, the opposite side on bearing plate (9) top is connected with water pump (11), one end of first connecting pipe (805) with the delivery port of water pump (11) is connected, the water inlet of water pump (11) is connected with drinking-water pipe (12), the one end of drinking-water pipe (12) with water tank (10) are connected.
5. A vinyl sulfite production facility as recited in claim 4, wherein: the top end of the water tank (10) is connected with a semiconductor refrigerating sheet (13), a cold head of the semiconductor refrigerating sheet (13) penetrates through the water tank (10), and the cold head of the semiconductor refrigerating sheet (13) is located below the liquid level.
6. A vinyl sulfite production facility as recited in claim 4, wherein: the top of the water tank (10) is connected with a water adding pipe (14), and the top of the water adding pipe (14) is connected with a third sealing cover (15) in a threaded manner.
7. A vinyl sulfite production facility as claimed in claim 1, wherein: the middle part at the top of the kettle body (1) is connected with a motor frame (16), a driving motor (17) is arranged in the motor frame (16), a stirring shaft (18) is rotatably connected to the middle part at the top of the kettle body (1) through a bearing, the top of the stirring shaft (18) is connected with a transmission shaft of the driving motor (17), and a stirring rod (19) is connected to the outer wall of the stirring shaft (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322293671.9U CN220657491U (en) | 2023-08-25 | 2023-08-25 | Ethylene sulfite production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322293671.9U CN220657491U (en) | 2023-08-25 | 2023-08-25 | Ethylene sulfite production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220657491U true CN220657491U (en) | 2024-03-26 |
Family
ID=90328451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322293671.9U Active CN220657491U (en) | 2023-08-25 | 2023-08-25 | Ethylene sulfite production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220657491U (en) |
-
2023
- 2023-08-25 CN CN202322293671.9U patent/CN220657491U/en active Active
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