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Fluorine Gas Generation Device

a technology of fluorine gas and generation device, which is applied in the direction of fluorine/hydrogenfluoride, fluorine, electrolysis components, etc., can solve the problems of fluorine gas generation device, pipe blockage, etc., and achieve the effect of supplying fluorine gas stably and continuously

Inactive Publication Date: 2012-04-12
CENT GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0027]According to the present invention, a fluorine gas generation device can be provided, which is capable of re-using components derived from a molten salt as raw materials for an electrolytic cell by liquefying and circulating the components derived from a molten salt in the vicinity of a gas outlet of the electrolytic cell, and further capable of stably and continuously supplying fluorine gas without need of disassembling and washing works of a valve and a pipe used for guiding a main product gas containing a fluorine gas as a main component and a subsidiary product gas containing a hydrogen gas as a main component which are generated from the electrolytic cell.

Problems solved by technology

As a result, there occurs clogging of a pipe in the fluorine gas generation device while the fluorine gas generation device is used for a long period of time.
As a result, there also occurs clogging of a pipe in the fluorine gas generation device while the fluorine gas generation device is used for a long period of time.
During this treatment of the fluorine gas, mist contained in the fluorine gas tends to cause not only clogging of the pipe as described above, but also clogging of the pressure regulator valve and clogging of the refining tower and deterioration of the absorbent.
Even in this trapping method, the filter tends to suffer from clogging at certain intervals.
Accordingly, not only a complicated working but also deterioration in productivity tend to be caused.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0032]Referring to FIG. 1, a fluorine gas generation device 100 according to a first embodiment of the present invention is explained.

[0033]The fluorine gas generation device 100 is an apparatus in which a main product gas containing a fluorine gas as a main component as well as a subsidiary product gas containing a hydrogen gas as a main component are generated by electrolysis.

[0034]The fluorine gas generation device 100 includes an electrolytic cell 1 that generates a fluorine gas by electrolysis, a fluorine gas supply system 2 that supplies the main product gas (fluorine gas) generated from the electrolytic cell 1 to the outside, and a hydrogen gas supply system 3 that supplies the subsidiary product gas (hydrogen gas) generated with the hydrogen gas generated, to the outside.

[0035]First, the electrolytic cell 1 is explained.

[0036]A molten salt containing hydrogen fluoride (HF) is reserved in the electrolytic cell 1. In this embodiment, a mixture (KF·2HF) of hydrogen fluoride and...

second embodiment

Modification of Second Embodiment

[0097]In the above-described second embodiment, the pipe that guides each of the main product gas and the subsidiary product gas generated in the electrolytic cell, and the pipe that circulates hydrogen fluoride contained in each of the gases generated are provided separately from each other. With this construction, even when increasing the amount of each of the gases to be generated in the electrolytic cell, hydrogen fluoride can be normally liquefied and circulated.

[0098]However, in the second embodiment, the connecting portion between the pipe that guides each of the main product gas and the subsidiary product gas generated in the electrolytic cell and the pipe that circulates hydrogen fluoride contained in each of the gases is not covered with the heat exchange mechanism such as the jacket, and a flow of each of the gases generated in the electrolytic cell and a flow of hydrogen fluoride liquefied become complicated. Therefore, it is likely that ...

example 1

[0102]FIG. 1 is a schematic diagram showing an experimental apparatus used in Example 1.

[0103]A stainless steel pipe having a diameter (φ) of ¼ inch was used as the first fluorine gas pipe 9 and the hydrogen gas pipe 10. A stainless steel pipe having a diameter (φ) of 1 inch and a length (L) of 15 cm was used as the jacket 13, and arranged to cool the first fluorine gas pipe 9. The jacket 13 was disposed on a portion of the first fluorine gas pipe 9 which was located in the position spaced by 20 cm from the top plate 1a of the electrolytic cell 1.

[0104]A cooling temperature of the portion of the first fluorine gas pipe 9 on which the jacket was disposed was adjusted to −50° C. by flowing a heating medium through the jacket. A silicone oil was used as the heating medium.

[0105]A current value for the electrolytic cell 1 was retained such that the linear velocity of the gases in the first fluorine gas pipe 9 became 7 cm / sec, and a continuous operation of the electrolytic cell 1 was car...

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Abstract

A fluorine gas generation device includes an electrolytic cell that electrolyzes hydrogen fluoride in an electrolytic bath constituted of a molten salt containing hydrogen fluoride. The fluorine gas generation device liquefies and circulates a hydrogen fluoride gas vaporized from the molten salt and mist derived from the molten salt which is entrained on the gases generated by using a circulating device connected to a pipe on an upper portion of the electrolytic cell, thereby returning the hydrogen fluoride gas and the mist derived from the molten salt to the electrolytic cell.

Description

TECHNICAL FIELD[0001]The present invention relates to a fluorine gas generation device, and particularly relates to a gas generation device capable of preventing clogging of a pipe with mist entrained on a gas generated, and a piping construction of the gas generation device.BACKGROUND OF THE INVENTION[0002]Conventionally, there is known a fluorine gas generation device, which includes an electrolytic cell for electrolyzing hydrogen fluoride in an electrolytic bath constituted of hydrogen fluoride-containing molten salt. In the fluorine gas generation device, a main product gas containing a fluorine gas as a main component is generated on an anode side of the electrolytic cell, whereas a subsidiary product gas containing a hydrogen gas as a main component is generated on a cathode side of the electrolytic cell.[0003]In such a fluorine gas generation device as described above, a hydrogen fluoride gas vaporized from the molten salt is mixed into the main product gas containing a fluor...

Claims

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Application Information

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IPC IPC(8): C25B1/24C25B9/00C25B15/08
CPCC01B7/195C25B15/08C25B1/245C01B7/20C25B9/00
Inventor MIYAZAKI, TATSUOMORI, ISAMU
Owner CENT GLASS CO LTD
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