Method for producing fluorine gas and device for producing fluorine gas

a technology of fluorine gas and production method, which is applied in the direction of electrolysis components, cells, electrodes, etc., can solve the problems of discontinuing or stopping the production operation of fluorine gas, etc., and achieve the effect of suppressing the clogging of pipes and valves with mis

Pending Publication Date: 2022-05-19
RESONAC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention can prevent the clogging of pipes and valves when using an electrolyte to produce fluorine gas. This is done by adding hydrogen fluoride and metal fluoride to the electrolyte.

Problems solved by technology

The mist accompanying fluorine gas becomes fine particles, which may clog pipes and valves used to send fluorine gas.
This may force a production operation of fluorine gas to discontinue or stop and has interfered with continuous operation to produce fluorine gas by the electrolytic method.

Method used

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  • Method for producing fluorine gas and device for producing fluorine gas
  • Method for producing fluorine gas and device for producing fluorine gas
  • Method for producing fluorine gas and device for producing fluorine gas

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first alternative embodiment

[0128]A first alternative embodiment will be described with reference to FIG. 4. In the device for producing fluorine gas illustrated in FIG. 2, the second bypass pipes 52 connect the electrolytic cells 11 to the first bypass pipe 51. In contrast, in a device for producing fluorine gas in the first alternative embodiment illustrated in FIG. 4, second bypass pipes 52 connect first pipes 41 to a first bypass pipe 51. The device for producing fluorine gas in the first alternative embodiment has substantially the same constitution as the device for producing fluorine gas in FIG. 2 except the above structure, and thus similar structures are not described.

second alternative embodiment

[0129]A second alternative embodiment will be described with reference to FIG. 5. A device for producing fluorine gas in the second alternative embodiment illustrated in FIG. 5 includes a single electrolytic cell 11. A first average particle size measurement unit 31 is not provided on a fourth pipe 44 but on a first pipe 41 and is provided at the upstream side of a first pipe valve 61. The device includes no second bypass pipe 52, and a first bypass pipe 51 is directly connected to an electrolytic cell 11 but not through a second bypass pipe 52.

[0130]The first bypass pipe 51 has a larger diameter than the fourth pipe 44 and thus functions as the clogging suppression mechanism. A mist pool space is further provided, for example, at the downstream end of the first bypass pipe 51, and this can further improve the clogging suppression effect. Examples of the mist pool space include a space formed from the downstream end portion of the first bypass pipe 51 and having a larger pipe diamet...

third alternative embodiment

[0132]A third alternative embodiment will be described with reference to FIG. 6. In a device for producing fluorine gas in the third alternative embodiment, a first average particle size measurement unit 31 is provided on an electrolytic cell 11, and the average particle size of a mist is measured by introducing the anode gas in the electrolytic cell 11 directly into the first average particle size measurement unit 31. The device for producing fluorine gas in the third alternative embodiment has no second average particle size measurement unit 34. The device for producing fluorine gas in the third alternative embodiment has substantially the same constitution as the device for producing fluorine gas in the second alternative embodiment except the above structure, and thus similar structures are not described.

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Abstract

Provided is a method for producing fluorine gas, capable of suppressing clogging of pipes and valves with mist. Fluorine gas is produced by a method including electrolyzing an electrolyte in an electrolytic cell, measuring the water concentration in a fluid generated in a cathode chamber in the electrolyzing, and sending a fluid generated in the inside of the electrolytic cell in the electrolyzing the electrolyte, from the inside to the outside of the electrolytic cell through a flow path. In the sending, the flow path in which the fluid flows is switched in accordance with the water concentration measured in the measuring the water concentration.

Description

TECHNICAL FIELD[0001]The present invention relates to a method for producing fluorine gas and a device for producing fluorine gas.BACKGROUND ART[0002]Fluorine gas can be synthesized (electrolytically synthesized) by electrolyzing an electrolyte containing hydrogen fluoride and a metal fluoride. Electrolyzing an electrolyte generates mist (for example, a mist of the electrolyte) together with fluorine gas, and thus the fluorine gas sent from an electrolytic cell is accompanied with mist. The mist accompanying fluorine gas becomes fine particles, which may clog pipes and valves used to send fluorine gas. This may force a production operation of fluorine gas to discontinue or stop and has interfered with continuous operation to produce fluorine gas by the electrolytic method.[0003]To suppress clogging of pipes and valves with mist, PTL 1 discloses technology of heating fluorine gas accompanied with mist or a pipe through which the gas passes, to a temperature equal to or higher than th...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C25B1/245C25B9/00C25B15/025C25B11/043C25B15/08
CPCC25B1/245C25B9/00C25B15/08C25B11/043C25B15/025C25B15/023C25B15/029C25B9/19C25B9/60
InventorOGURO, SHINYAFUKUCHI, YOHSUKEKOBAYASHI
OwnerRESONAC CORP