CN116498898A - Fluorine gas supply system - Google Patents
Fluorine gas supply system Download PDFInfo
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- CN116498898A CN116498898A CN202310287417.XA CN202310287417A CN116498898A CN 116498898 A CN116498898 A CN 116498898A CN 202310287417 A CN202310287417 A CN 202310287417A CN 116498898 A CN116498898 A CN 116498898A
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- Prior art keywords
- fluorine gas
- fluorine
- gas
- inlet
- supply system
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- 239000011737 fluorine Substances 0.000 title claims abstract description 426
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 426
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 424
- 239000000428 dust Substances 0.000 claims abstract description 71
- 239000012528 membrane Substances 0.000 claims abstract description 41
- 238000003682 fluorination reaction Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 372
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 33
- 238000007664 blowing Methods 0.000 claims description 23
- 239000000498 cooling water Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 230000004888 barrier function Effects 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- SANRKQGLYCLAFE-UHFFFAOYSA-H uranium hexafluoride Chemical compound F[U](F)(F)(F)(F)F SANRKQGLYCLAFE-UHFFFAOYSA-H 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 23
- MZFRHHGRNOIMLW-UHFFFAOYSA-J uranium(4+);tetrafluoride Chemical compound F[U](F)(F)F MZFRHHGRNOIMLW-UHFFFAOYSA-J 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 239000011824 nuclear material Substances 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229910052770 Uranium Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 150000002221 fluorine Chemical class 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/065—Arrangements for producing propulsion of gases or vapours
- F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0157—Compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/021—Avoiding over pressurising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/01—Purifying the fluid
- F17C2265/012—Purifying the fluid by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/05—Applications for industrial use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a fluorine gas supply system, which comprises a first fluorine gas buffer tank, a fluorine gas dust remover, a fluorine gas membrane compressor, a second fluorine gas buffer tank and a pneumatic valve group, wherein a fluorine gas outlet of the first fluorine gas buffer tank is connected with a fluorine gas inlet of the fluorine gas dust remover through a first fluorine gas main pipe, a fluorine gas outlet of the fluorine gas dust remover is connected with a gas inlet of the fluorine gas membrane compressor through a second fluorine gas main pipe, and a gas outlet of the fluorine gas membrane compressor is connected with a fluorine gas inlet of the second fluorine gas buffer tank through a third fluorine gas main pipe; the pneumatic valve group is arranged on the adjusting pipeline, an air inlet of the adjusting pipeline is connected with the third fluorine gas main pipe, and an air outlet of the adjusting pipeline is connected with the second fluorine gas main pipe. The fluorine gas supply system provided by the invention not only can be used for conveying stable fluorine gas flow into the vertical fluorination reactor, but also can ensure the pressure stability in the fluorine gas conveying process, thereby being beneficial to continuous and stable operation of a uranium hexafluoride product production line.
Description
Technical Field
The invention relates to the technical field of uranium conversion equipment, in particular to a fluorine gas supply system.
Background
In the field of nuclear fuel recycling, uranium hexafluoride (UF 6 ) The uranium conversion process mainly prepared and the technical system thereof are one of key links for fully utilizing uranium resources. In the uranium hexafluoride preparation process, uranium tetrafluoride material and fluorine gas are subjected to countercurrent contact reaction in a vertical fluorination reactor to generate a uranium hexafluoride product. Fluorine gas (F) required for fluorination step 2 ) Is prepared by electrolysis of KH at medium temperature 2 F 3 Molten salt is generated and F is taken 2 Is sent to a fluorination process and uranium tetrafluoride (UF) 4 ) Carrying out fluorination reaction to generate UF 6 And (5) a product. From the following componentsThe intermediate temperature electrolysis process is influenced by various factors to generate F 2 The method has the characteristics of small pressure, large flow and poor stability, and cannot be directly used for uranium hexafluoride production.
In addition, a large amount of electrolyte enters the pipeline along with fluorine gas in the electrolytic fluorine production process, and unstable current in the electrolytic process can lead to unstable pressure of a fluorine gas main pipe and larger fluctuation of fluorine gas flow, so that the fluorination reaction effect of uranium tetrafluoride can be seriously affected. When the pressure of the fluorine gas main pipe is too high, fluorine gas in the electrolytic tank is easy to overflow from the sealing gasket under the action of the positive pressure and contacts with air, so that the sealing gasket is burnt, and the electrolytic tank is stopped. When the pressure of the fluorine gas main pipe is too high, the sealing performance of the electrolytic tank is easily damaged, and air enters the electrolytic tank to be contacted with fluorine gas under the action of the negative pressure from the sealing position of the electrolytic tank pipeline and the tank body, so that the sealing gasket is burnt, and the electrolytic tank is stopped. That is, if the pressure of the fluorine gas header pipe is unstable during the electrolytic fluorine production process, the stability of the system operation is seriously damaged, resulting in a great loss of nuclear material.
Based on the above circumstances, it has been an urgent need in the art to design a fluorine gas supply system that can deliver a stable flow of fluorine gas into a vertical fluorination reactor and can ensure a stable pressure of the fluorine gas header pipe.
Disclosure of Invention
The invention aims to provide a fluorine gas supply system which can convey stable fluorine gas flow into a vertical fluorination reactor and can ensure the pressure stability of a fluorine gas main pipe.
The invention provides a fluorine gas supply system which comprises a first fluorine gas buffer tank, a fluorine gas dust remover, a fluorine gas membrane compressor, a second fluorine gas buffer tank and a pneumatic valve group, wherein a fluorine gas outlet of the first fluorine gas buffer tank is connected with a fluorine gas inlet of the fluorine gas dust remover through a first fluorine gas main pipe, a fluorine gas outlet of the fluorine gas dust remover is connected with a gas inlet of the fluorine gas membrane compressor through a second fluorine gas main pipe, and a gas outlet of the fluorine gas membrane compressor is connected with a fluorine gas inlet of the second fluorine gas buffer tank through a third fluorine gas main pipe; the pneumatic valve group is arranged on an adjusting pipeline, an air inlet of the adjusting pipeline is connected with the third fluorine gas main pipe, and an air outlet of the adjusting pipeline is connected with the second fluorine gas main pipe.
According to the fluorine gas supply system provided by the invention, the fluorine gas supply system further comprises a nitrogen gas conveying pipeline, wherein the nitrogen gas conveying pipeline is respectively connected with the fluorine gas dust remover and the fluorine gas diaphragm compressor.
According to the fluorine gas supply system provided by the invention, the fluorine gas supply system further comprises a cooling water input pipeline and a cooling water output pipeline, wherein the fluorine gas diaphragm compressor is respectively connected with a water inlet pipe and a water outlet pipe, the cooling water input pipeline is connected with the water inlet pipe of the fluorine gas diaphragm compressor, and the cooling water output pipeline is connected with the water outlet pipe of the fluorine gas diaphragm compressor.
According to the fluorine gas supply system provided by the invention, the fluorine gas supply system further comprises a tail gas conveying pipeline, and the fluorine gas dust remover and the fluorine gas membrane compressor are respectively connected with the tail gas conveying pipeline.
According to the fluorine gas supply system provided by the invention, the fluorine gas dust remover comprises a cylinder body, a cone cap, a filter pipe assembly, a back blowing assembly and a filter residue collecting device, wherein the cone cap is connected with the upper end of the cylinder body, the filter residue collecting device is connected with the lower end of the cylinder body, the filter pipe assembly is arranged in the cylinder body, and part of the back blowing assembly is arranged in the cone cap; the fluorine gas inlet of the fluorine gas dust remover is arranged on the side wall of the cylinder body, and the fluorine gas outlet of the fluorine gas dust remover is arranged at the top end of the cone cap; and a tail gas outlet is further formed in the side wall of the cylinder body and connected with the tail gas conveying pipeline.
According to the fluorine gas supply system provided by the invention, the back blowing assembly comprises a plurality of first back blowing pipes and a plurality of second back blowing pipes, and one end of each first back blowing pipe and one end of each second back blowing pipe respectively penetrate through the cone cap and are arranged outside the cone cap; the outside of the cone cap is respectively provided with a first back-blowing inlet and a second back-blowing inlet, one end of each first back-blowing pipe is respectively connected with the first back-blowing inlet, one end of each second back-blowing pipe is respectively connected with the second back-blowing inlet, and the first back-blowing inlet and the second back-blowing inlet are respectively connected with the nitrogen conveying pipeline.
According to the fluorine gas supply system provided by the invention, the filter residue collecting device comprises a filter residue conveying cone body and a filter residue collecting tank, wherein the filter residue conveying cone body is of a conical cylinder body structure with a large upper part and a small lower part, the upper end of the filter residue conveying cone body is connected with the lower end of the cylinder body, and the lower end of the filter residue conveying cone body is connected with the upper end of the filter residue collecting tank.
According to the fluorine gas supply system provided by the invention, the fluorine gas inlet of the first fluorine gas buffer tank is connected with the fluorine gas input main pipe, and the fluorine gas input main pipe is used for being connected with the electrolytic fluorine production device.
According to the fluorine gas supply system provided by the invention, the fluorine gas outlet of the second fluorine gas buffer tank is connected with the fluorine gas output main pipe, and the fluorine gas output main pipe is used for being connected with the vertical fluorination reactor.
According to the fluorine gas supply system provided by the invention, the fluorine gas dust collectors are provided with a plurality of fluorine gas inlets, the fluorine gas inlets of the fluorine gas dust collectors are respectively connected with the first fluorine gas main pipe, and the fluorine gas outlets of the fluorine gas dust collectors are respectively connected with the second fluorine gas main pipe; the fluorine membrane compressors are provided with a plurality of gas inlets, the gas inlets of the fluorine membrane compressors are respectively connected with the second fluorine gas main pipe, and the gas outlets of the fluorine membrane compressors are respectively connected with the third fluorine gas main pipe.
The invention provides a fluorine gas supply system, wherein a fluorine gas outlet of a first fluorine gas buffer tank is connected with a fluorine gas inlet of a fluorine gas dust remover through a first fluorine gas main pipe, the fluorine gas outlet of the fluorine gas dust remover is connected with a gas inlet of a fluorine gas membrane compressor through a second fluorine gas main pipe, the gas outlet of the fluorine membrane compressor is connected with the fluorine gas inlet of the second fluorine gas buffer tank through a third fluorine gas main pipe, a pneumatic valve group is arranged on an adjusting pipeline, an air inlet of the adjusting pipeline is connected with the third fluorine gas main pipe, and an air outlet of the adjusting pipeline is connected with the second fluorine gas main pipe; when the fluorine gas supply system is used, the fluorine gas supply system is arranged between the electrolytic fluorine making device and the vertical fluorination reactor, fluorine gas generated by the electrolytic fluorine making device is firstly conveyed to a first fluorine gas buffer tank for temporary storage and buffering, then fluorine gas in the first fluorine gas buffer tank is conveyed to a fluorine gas dust remover, the fluorine gas dust remover can be used for filtering and removing dust of the fluorine gas, the fluorine gas after filtering and removing dust is conveyed to a fluorine gas membrane compressor for pressurization treatment, the fluorine gas after pressurization treatment is conveyed to a second fluorine gas buffer tank for temporary storage and buffering, and then the second fluorine gas buffer tank is conveyed to the vertical fluorination reactor; in the process, the pressure of fluorine gas in the second fluorine gas main pipe and the third fluorine gas main pipe can be regulated through the pneumatic valve group so as to supply stable fluorine gas into the vertical fluorination reactor through the second fluorine gas buffer tank. Therefore, the fluorine gas supply system provided by the invention not only can convey stable fluorine gas flow into the vertical fluorination reactor, but also can ensure the pressure stability in the fluorine gas conveying process, thereby being beneficial to continuous and stable operation of a uranium hexafluoride product production line, ensuring that uranium tetrafluoride materials fully react with fluorine gas, increasing the effective utilization rate of nuclear materials and reducing the loss of the nuclear materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the structure of a fluorine gas supply system according to the present invention;
FIG. 2 is a flow chart of the operation of the fluorine gas supply system of the present invention;
FIG. 3 is a schematic view showing the structure of a fluorine dust collector in the fluorine gas supply system of the invention;
fig. 4 is a schematic view showing another structure of the fluorine gas supply system of the present invention.
Reference numerals illustrate:
1. a first fluorine buffer tank; 2. a fluorine gas dust remover; 21. a fluorine gas inlet; 22. a fluorine gas outlet; 23. a tail gas outlet; 201. a cylinder; 202. a conical cap; 203. a filter tube assembly; 204. a first blowback pipe; 205. a second blowback pipe; 206. a first blowback inlet; 207. a second blowback inlet; 208. conveying the filter residues to the vertebral bodies; 209. a filter residue collection tank; 3. a fluorine diaphragm compressor; 4. a second fluorine buffer tank; 5. a pneumatic valve group; 6. a first fluorine gas header; 7. a second fluorine gas header; 8. a third fluorine gas header; 9. adjusting the pipeline; 10. a nitrogen gas delivery line; 11. a tail gas delivery line; 12. fluorine gas input header pipe; 13. a fluorine gas output main pipe; 14. a cooling water input pipeline; 15. a cooling water output line; 16. a water inlet pipe; 17. and a water outlet pipe.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are 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.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, the fluorine gas supply system according to the embodiment of the invention includes a first fluorine gas buffer tank 1, a fluorine gas dust remover 2, a fluorine gas membrane compressor 3, a second fluorine gas buffer tank 4, and a pneumatic valve group 5, wherein a fluorine gas outlet of the first fluorine gas buffer tank 1 is connected to a fluorine gas inlet of the fluorine gas dust remover 2 through a first fluorine gas main pipe 6, a fluorine gas outlet of the fluorine gas dust remover 2 is connected to a gas inlet of the fluorine gas membrane compressor 3 through a second fluorine gas main pipe 7, and a gas outlet of the fluorine gas membrane compressor 3 is connected to a fluorine gas inlet of the second fluorine gas buffer tank 4 through a third fluorine gas main pipe 8. Wherein the pneumatic valve group 5 is arranged on an adjusting pipeline 9, an air inlet of the adjusting pipeline 9 is connected with a third fluorine gas main pipe 8, and an air outlet of the adjusting pipeline 9 is connected with a second fluorine gas main pipe 7.
In use, the fluorine gas supply system is installed between the electrolytic fluorine making apparatus and the vertical fluorination reactor. The electrolytic fluorine production device can generate fluorine gas through an electrolytic tank, the electrolytic fluorine production device firstly conveys the generated fluorine gas to the first fluorine gas buffer tank 1 for temporary storage and buffering, then the first fluorine gas buffer tank 1 conveys the fluorine gas to the fluorine gas dust remover 2, the fluorine gas dust remover 2 can carry out filtration dust removal treatment on the fluorine gas, the fluorine gas after filtration dust removal treatment is conveyed to the fluorine gas membrane compressor 3 for pressurization treatment, the fluorine gas after the pressurization treatment is conveyed to the second fluorine gas buffer tank 4 for temporary storage and buffering, and then the second fluorine gas buffer tank 4 conveys the fluorine gas to the vertical fluorination reactor for uranium hexafluoride preparation. In the process, most of the pressurized fluorine gas enters the vertical fluorination reactor to react with uranium tetrafluoride materials through the adjusting function of the pneumatic valve group 5, and a small amount of fluorine gas returns to the second fluorine gas main pipe 7 through the pneumatic valve group 5 on the adjusting pipeline 9 and is conveyed to the fluorine gas membrane compressor 3, so that the fluorine gas pressure in the second fluorine gas main pipe 7 and the third fluorine gas main pipe 8 is adjusted, the fluorine gas flow is stabilized, and the stable fluorine gas is supplied into the vertical fluorination reactor through the second fluorine gas buffer tank 4.
Therefore, the fluorine gas supply system provided by the embodiment of the invention can not only convey stable fluorine gas flow into the vertical fluorination reactor, but also ensure pressure stability in the fluorine gas conveying process by controlling the fluorine gas barrier compressor 3 and the pneumatic valve group 5 in a linkage manner, so that continuous and stable operation of a uranium hexafluoride product production line is facilitated, the uranium tetrafluoride material and the fluorine gas are ensured to fully react, the effective utilization rate of the nuclear material is increased, the slag yield is reduced, and the loss of the nuclear material is reduced.
In addition, the fluorine gas supply system provided by the embodiment of the invention has good sealing property, heat dissipation, high efficiency and stability, all devices and equipment in the system are stable in operation, the failure rate is low, large-scale fluorine gas supply can be realized, and the supply amount of fluorine gas is flexible and adjustable.
Specifically, the pneumatic valve group 5 is electrically connected with the DCS, and the opening of the pneumatic valve group 5 can be adjusted through the DCS, so that the fluorine gas pressure of the second fluorine gas main pipe 7 and the third fluorine gas main pipe 8 is controlled, the situation that a post operator constantly adjusts the opening of the inlet and outlet valve of the fluorine gas membrane compressor 3 to control the fluorine gas pressure is avoided, the contact frequency of the post operator and the fluorine gas is reduced, and the safety risk is reduced.
When the fluorine pressure of the third fluorine gas main pipe 8 is too low, the opening degree of the pneumatic valve group 5 is regulated to be increased, so that the fluorine gas compensation of the second fluorine gas main pipe 7 is increased, and the fluorine pressure of the third fluorine gas main pipe 8 is increased.
On the contrary, when the fluorine pressure of the third fluorine gas main pipe 8 is higher, the opening degree of the pneumatic valve group 5 is adjusted and reduced, so that the fluorine compensation of the second fluorine gas main pipe 7 is reduced, and the fluorine of the third fluorine gas main pipe 8 is reduced.
When the fluorine gas pressure of the third fluorine gas main pipe 8 is kept in a relatively stable state, the fluorine gas flow cannot cause larger fluctuation due to the fact that more electrolyte is carried into the pipeline and the electrolytic current is unstable in the electrolytic fluorine production process, and continuous and stable operation of production cannot be affected at the moment.
Specifically, the fluorine gas inlet of the first fluorine buffer tank 1 is connected to an electrolytic fluorine generating apparatus through a fluorine gas input manifold 12. The fluorine gas outlet of the second fluorine gas buffer tank 4 is connected with the vertical fluorination reactor through a fluorine gas output header pipe 13.
Specifically, in the fluorine gas supply system of the embodiment of the invention, the volume of the first fluorine buffer tank 1 is larger than the volume of the second fluorine buffer tank 4. By arranging the first fluorine buffer tank 1 at the front end of the fluorine dust remover 2, stable operation of the working condition of the electrolytic tank in the electrolytic fluorine making process can be ensured. By providing the second fluorine buffer tank 4 at the rear end of the fluorine barrier compressor 3, the flow rate and pressure stability of the inlet fluorine gas of the fluorine barrier compressor 3 can be ensured.
Wherein, the fluorine gas inlet and the fluorine gas outlet of the first fluorine gas buffer tank 1 are respectively provided with a control valve. Control valves are respectively arranged at the fluorine gas inlet and the fluorine gas outlet of the second fluorine buffer tank 4.
In some embodiments of the present invention, the fluorine gas supply system further comprises a nitrogen gas delivery line 10, and the nitrogen gas delivery line 10 is connected to the fluorine gas precipitator 2 and the fluorine membrane compressor 3, respectively. That is, nitrogen gas can be supplied to the fluorine gas dust collector 2 and the fluorine gas barrier compressor 3 through the nitrogen gas supply line 10. Wherein, a control valve is arranged on a connecting pipeline between the nitrogen gas conveying pipeline 10 and the fluorine gas dust remover 2, and a control valve is arranged on a connecting pipeline between the nitrogen gas conveying pipeline 10 and the fluorine gas diaphragm compressor 3.
Further, the fluorine gas supply system further comprises a tail gas conveying pipeline 11, and the tail gas conveying pipeline 11 is respectively connected with the fluorine gas dust remover 2 and the fluorine gas membrane compressor 3. Wherein, a control valve is arranged on a connecting pipeline between the tail gas conveying pipeline 11 and the fluorine gas dust remover 2, and a control valve is arranged on a connecting pipeline between the tail gas conveying pipeline 11 and the fluorine gas diaphragm compressor 3.
As shown in fig. 3, in some embodiments of the present invention, the fluorine gas dust remover 2 includes a cylinder 201, a cone cap 202, a filter tube assembly 203, a blowback assembly, and a residue collecting device, the cone cap 202 is connected to an upper end of the cylinder 201, the residue collecting device is connected to a lower end of the cylinder 201, the filter tube assembly 203 is disposed inside the cylinder 201, and a portion of the blowback assembly is disposed inside the cone cap 202. Wherein the fluorine gas inlet 21 of the fluorine gas dust remover 2 is arranged on the side wall of the cylinder 201, and the fluorine gas outlet 22 of the fluorine gas dust remover 2 is arranged at the top end of the cone cap 202. A tail gas outlet 23 is also provided on the side wall of the barrel 201, the tail gas outlet 23 being connected to the tail gas delivery line 11.
Specifically, the filter tube assembly 203 includes a plurality of filter tubes disposed in a vertical direction for filtering fluorine gas.
Specifically, the blowback assembly includes a plurality of first blowback pipes 204 and a plurality of second blowback pipes 205, and one end of each first blowback pipe 204 and one end of each second blowback pipe 205 are disposed outside the cone cap 202 through the cone cap 202, respectively. A first blowback inlet 206 and a second blowback inlet 207 are provided outside the cone cap 202, one end of each first blowback pipe 204 is connected to the first blowback inlet 206, one end of each second blowback pipe 205 is connected to the second blowback inlet 207, and the first blowback inlet 206 and the second blowback inlet 207 are connected to the nitrogen gas supply line 10. The first blowback pipes 204 and the second blowback pipes 205 are arranged vertically, and nozzles are provided at the bottoms of the first blowback pipes 204 and the second blowback pipes 205, respectively.
That is, nitrogen gas enters each first blowback pipe 204 through the first blowback inlet 206, and at the same time, nitrogen gas enters each second blowback pipe 205 through the second blowback inlet 207, and then nitrogen gas is ejected into the fluorine gas dust collector 2 through the nozzles of each first blowback pipe 204 and each second blowback pipe 205. Since each of the first blowback pipes 204 and each of the second blowback pipes 205 are disposed in the vertical direction, nitrogen gas can be blown downward in the fluorine dust collector 2. Further, since each of the first blowback pipes 204 and each of the second blowback pipes 205 are located above the filter tube assemblies 203, nitrogen gas can be blown into the filter tube assemblies 203.
Specifically, the filter residue collecting device comprises a filter residue conveying cone 208 and a filter residue collecting tank 209, wherein the filter residue conveying cone 208 is of a conical cylinder structure with a large upper part and a small lower part, the upper end of the filter residue conveying cone 208 is connected with the lower end of the cylinder 201, and the lower end of the filter residue conveying cone 208 is detachably connected with the upper end of the filter residue collecting tank 209.
In the working process of the system, the main function of the fluorine gas dust remover 2 is to realize the separation of gas and solid phases and filter dust in fluorine gas, thereby prolonging the working life of the fluorine gas diaphragm compressor 3. The fluorine gas enters the cylinder 201 from the fluorine gas inlet 21 of the fluorine gas dust remover 2, is filtered by the filter pipe assembly 203 in the cylinder 201, enters the cone cap 202 through the filter pipe assembly 203, and is then conveyed to the fluorine gas membrane compressor 3 through the fluorine gas outlet 22 of the fluorine gas dust remover 2. When the fluorine gas is filtered in the fluorine gas dust remover 2, impurities entrained in the gas are blocked by the filter pipe assembly 203 and naturally fall into the filter residue collection tank 209 to be collected through the cylinder 201 and the filter residue conveying cone 208 in sequence.
Through setting up blowback subassembly, can concentrate the clearance to the inside of fluorine gas dust remover 2 regularly to ensure that fluorine gas dust remover 2 has good gas permeability and validity. That is, after the fluorine gas dust collector is put into operation for a certain time, the first blowback inlet 206 and the second blowback inlet 207 of the fluorine gas dust collector 2 are opened, and the nitrogen gas conveyed through the nitrogen gas conveying pipeline 10 enters the nozzles of the first blowback pipes 204 and the second blowback pipes 205 from the first blowback inlet 206 and the second blowback inlet 207, respectively, so as to blowback the filter pipe assembly 203, blow down the impurities attached to the filter pipes in the filter pipe assembly 203, and naturally drop into the filter residue collection tank 209 through the cylinder 201 and the filter residue conveying cone 208 in sequence. After a certain period, the filter residue collection tank 209 can be detached to clean impurities in the filter residue collection tank 209.
In addition, during maintenance and overhaul period, nitrogen can be introduced into the fluorine gas dust remover 2 through the nitrogen conveying pipeline 10, and then tail gas in the fluorine gas dust remover 2 is conveyed to the tail gas conveying pipeline 11 for discharge through the tail gas outlet 23, so that gas replacement can be carried out on the fluorine gas dust remover 2, and further subsequent equipment maintenance and overhaul are facilitated.
In some embodiments of the present invention, the fluorine gas supply system further includes a cooling water input pipeline 14 and a cooling water output pipeline 15, the fluorine gas membrane compressor 3 is connected with a water inlet pipe 16 and a water outlet pipe 17, the cooling water input pipeline 14 is connected with the water inlet pipe 16 of the fluorine gas membrane compressor 3, and the cooling water output pipeline 15 is connected with the water outlet pipe 17 of the fluorine gas membrane compressor 3. Wherein, the water inlet pipe 16 and the water outlet pipe 17 of the fluorine diaphragm compressor 3 are respectively provided with a control valve.
When the fluorine diaphragm compressor 3 works, the elastic deformation of the diaphragm is mainly used for doing work to boost the gas, so that the problem that the fluorine diaphragm compressor 3 reacts with the fluorine gas due to friction acting in the operation process of the compressor is avoided, and the operation safety and stability of the fluorine diaphragm compressor 3 are ensured. Because the fluorine diaphragm compressor 3 has good sealing performance, no leakage exists in the compression process, and the fluorine diaphragm compressor is particularly suitable for compressing and conveying flammable and explosive gases such as fluorine and the like and harmful gases. The fluorine diaphragm compressor 3 has the advantages of large allowable single-stage pressure ratio, high supercharging efficiency, large heat dissipation area of the diaphragm head, low exhaust temperature and better medium stability in the gas conveying process. Because the fluorine diaphragm compressor 3 compresses the fluorine gas in the operation process, the fluorine gas can generate heat, so that the heat is conducted to the diaphragm and the end cover of the fluorine diaphragm compressor 3, and the diaphragm and the end cover generate heat, thereby influencing the service life and the compression efficiency of the diaphragm. Therefore, in order to improve the service life of the diaphragm and ensure the compression efficiency of the fluorine diaphragm compressor 3, cooling water channels may be respectively provided on the cylinder head and the cylinder body of the fluorine diaphragm compressor 3, or a cooling water pipe may be placed in the low-pressure cylinder body of the fluorine diaphragm compressor 3, and then cooling water is conveyed into the fluorine diaphragm compressor 3 through the cooling water input pipeline 14, so as to cool the interior of the fluorine diaphragm compressor 3, cool the discharged high-temperature gas and high-temperature working oil in the cylinder body, ensure the working reliability and safety of the fluorine diaphragm compressor 3, and then cool the fluorine diaphragm compressor 3 and discharge the cooled cooling water through the cooling water output pipeline 15.
In particular, the diaphragm is an important key component of the fluorine barrier compressor 3. As HF gas is entrained in fluorine gas generated by preparing fluorine through medium-temperature electrolysis, the corrosion resistance of the membrane material should be considered when the membrane material is selected. Meanwhile, the diaphragm is subjected to hundreds of alternating stresses per minute in the working process, so that the fatigue of materials is easily caused, and the buckling deformation, perforation and crack of the diaphragm are caused. Therefore, in order to ensure stable operation of the system, the diaphragm of the fluorine diaphragm compressor 3 employs a stainless steel diaphragm.
In the fluorine gas supply system of the embodiment of the invention, one or more fluorine gas barrier compressors 3 may be provided according to actual use requirements. As shown in fig. 4, when the fluorine membrane compressors 3 are provided in plural, the gas inlets of the respective fluorine membrane compressors 3 are connected to the second fluorine gas manifold 7 through the first gas inlet branch pipes, respectively, and the gas outlets of the respective fluorine membrane compressors 3 are connected to the third fluorine gas manifold 8 through the first gas outlet branch pipes, respectively. The gas inlets of the fluorine membrane compressors 3 are respectively connected with the nitrogen gas conveying pipeline 10 through second gas inlet branch pipelines, and the gas outlets of the fluorine membrane compressors 3 are respectively connected with the tail gas conveying pipeline 11 through second gas outlet branch pipelines. Each fluorine diaphragm compressor 3 is connected with a cooling water input pipeline 14 through a water inlet pipe 16, and each fluorine diaphragm compressor 3 is connected with a cooling water output pipeline 15 through a water outlet pipe 17. Wherein, control valves are respectively arranged on each first air inlet branch pipeline, each first air outlet branch pipeline, each second air inlet branch pipeline, each second air outlet branch pipeline, each water inlet pipe 16 and each water outlet pipe 17. That is, one of the fluorine membrane compressors 3 can be started to work in the system operation process, and the rest of the fluorine membrane compressors 3 are used as standby, so that the fluorine membrane compressors 3 can be maintained at fixed time.
In the fluorine gas supply system according to the embodiment of the invention, one or more fluorine gas dust collectors 2 may be provided according to actual use requirements. As shown in fig. 4, when the fluorine gas dust collectors 2 are provided in plural, the fluorine gas inlet of each fluorine gas dust collector 2 is connected to the first fluorine gas main pipe 6, and the fluorine gas outlet of each fluorine gas dust collector 2 is connected to the second fluorine gas main pipe 7. Each fluorine gas dust remover 2 is connected with a nitrogen gas conveying pipeline 10 through a nitrogen gas input branch pipeline respectively, and each fluorine gas dust remover 2 is connected with a tail gas conveying pipeline 11 through a nitrogen gas output branch pipeline respectively. Wherein, control valves are respectively arranged at the fluorine gas inlet of each fluorine gas dust remover 2, the fluorine gas outlet of each fluorine gas dust remover 2, each nitrogen gas input branch pipeline and each nitrogen gas output branch pipeline. That is, one of the fluorine gas dust collectors 2 can be started to work in the running process of the system, and the rest of the fluorine gas dust collectors 2 are used as standby, so that the fluorine gas dust collectors 2 can be maintained at fixed time.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The fluorine gas supply system is characterized by comprising a first fluorine gas buffer tank, a fluorine gas dust remover, a fluorine gas membrane compressor, a second fluorine gas buffer tank and a pneumatic valve group, wherein a fluorine gas outlet of the first fluorine gas buffer tank is connected with a fluorine gas inlet of the fluorine gas dust remover through a first fluorine gas main pipe, a fluorine gas outlet of the fluorine gas dust remover is connected with a gas inlet of the fluorine gas membrane compressor through a second fluorine gas main pipe, and a gas outlet of the fluorine gas membrane compressor is connected with a fluorine gas inlet of the second fluorine gas buffer tank through a third fluorine gas main pipe; the pneumatic valve group is arranged on an adjusting pipeline, an air inlet of the adjusting pipeline is connected with the third fluorine gas main pipe, and an air outlet of the adjusting pipeline is connected with the second fluorine gas main pipe.
2. The fluorine supply system of claim 1, further comprising a nitrogen delivery line connected to the fluorine scrubber and the fluorine barrier compressor, respectively.
3. The fluorine gas supply system according to claim 1, further comprising a cooling water input pipeline and a cooling water output pipeline, wherein the fluorine gas barrier compressor is connected with a water inlet pipe and a water outlet pipe, respectively, the cooling water input pipeline is connected with the water inlet pipe of the fluorine gas barrier compressor, and the cooling water output pipeline is connected with the water outlet pipe of the fluorine gas barrier compressor.
4. The fluorine supply system of claim 2, further comprising a tail gas delivery conduit, wherein the fluorine scrubber and the fluorine barrier compressor are each coupled to the tail gas delivery conduit.
5. The fluorine gas supply system according to claim 4, wherein the fluorine gas dust remover comprises a cylinder, a cone cap, a filter tube assembly, a blowback assembly and a filter residue collecting device, the cone cap is connected with the upper end of the cylinder, the filter residue collecting device is connected with the lower end of the cylinder, the filter tube assembly is arranged in the cylinder, and a part of the blowback assembly is arranged in the cone cap; the fluorine gas inlet of the fluorine gas dust remover is arranged on the side wall of the cylinder body, and the fluorine gas outlet of the fluorine gas dust remover is arranged at the top end of the cone cap; and a tail gas outlet is further formed in the side wall of the cylinder body and connected with the tail gas conveying pipeline.
6. A fluorine gas supply system according to claim 5, wherein the blowback assembly comprises a plurality of first blowback pipes and a plurality of second blowback pipes, one end of each of the first blowback pipes and one end of each of the second blowback pipes being disposed outside the cone cap through the cone cap, respectively; the outside of the cone cap is respectively provided with a first back-blowing inlet and a second back-blowing inlet, one end of each first back-blowing pipe is respectively connected with the first back-blowing inlet, one end of each second back-blowing pipe is respectively connected with the second back-blowing inlet, and the first back-blowing inlet and the second back-blowing inlet are respectively connected with the nitrogen conveying pipeline.
7. The fluorine gas supply system according to claim 5, wherein the residue collecting means comprises a residue conveying cone and a residue collecting tank, the residue conveying cone is of a conical cylinder structure with a large upper part and a small lower part, an upper end of the residue conveying cone is connected with a lower end of the cylinder, and a lower end of the residue conveying cone is connected with an upper end of the residue collecting tank.
8. A fluorine supply system according to any of claims 1 to 7, wherein the fluorine inlet of the first fluorine buffer tank is connected to a fluorine inlet manifold for connection to an electrolytic fluorine generating device.
9. A fluorine supply system according to any of claims 1 to 7, wherein the fluorine outlet of the second fluorine buffer tank is connected to a fluorine outlet manifold for connection to a vertical fluorination reactor.
10. The fluorine supply system according to any one of claims 1 to 7, wherein a plurality of fluorine gas dust collectors are provided, a fluorine gas inlet of each of the fluorine gas dust collectors is connected to the first fluorine gas manifold, and a fluorine gas outlet of each of the fluorine gas dust collectors is connected to the second fluorine gas manifold; the fluorine membrane compressors are provided with a plurality of gas inlets, the gas inlets of the fluorine membrane compressors are respectively connected with the second fluorine gas main pipe, and the gas outlets of the fluorine membrane compressors are respectively connected with the third fluorine gas main pipe.
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| CN202310287417.XA CN116498898A (en) | 2023-03-22 | 2023-03-22 | Fluorine gas supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310287417.XA CN116498898A (en) | 2023-03-22 | 2023-03-22 | Fluorine gas supply system |
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