WO2007023615A1 - フッ素系ガス発生装置 - Google Patents
フッ素系ガス発生装置 Download PDFInfo
- Publication number
- WO2007023615A1 WO2007023615A1 PCT/JP2006/312866 JP2006312866W WO2007023615A1 WO 2007023615 A1 WO2007023615 A1 WO 2007023615A1 JP 2006312866 W JP2006312866 W JP 2006312866W WO 2007023615 A1 WO2007023615 A1 WO 2007023615A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- supply pipe
- raw material
- gas
- electrolytic bath
- fluorine
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/05—Pressure cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/245—Fluorine; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
Definitions
- the fluorine-based gas is generated in an electrolytic cell 1 of a fluorine-based gas generator as shown in the schematic diagram of FIG.
- the material of the electrolytic cell 1 is usually Ni, Monel, carbon steel or the like.
- the electrolytic bath 1 is filled with a mixed molten salt of potassium hydrogen fluoride or ammonium fluoride hydrofluoride as the electrolytic bath 2.
- the mixed molten salt used for the electrolytic bath 2 has a melting point higher than room temperature, and an ordinary electrolytic cell 1 for generating a fluorine-based gas has a heating device 12 (temperature adjusting means) such as a heater and a hot water pipe on its outer periphery.
- Examples of the melting point of the mixed molten salt used in the electrolytic bath include about 70 ° C (KF-2HF) and about 50 ° C (NH F-2HF
- the electrolytic cell 1 is divided into an anode chamber 3 and an anode chamber 4 by a partition wall 16 formed of monel or the like.
- a voltage between the carbon 51 or nickel (hereinafter referred to as Ni) anode 51 housed in the anode chamber 3 and the Ni cathode 52 housed in the cathode chamber 4 for electrical decomposition the anode chamber Fluorine gas is generated on the 3 side and hydrogen gas is generated on the 4 side of the cathode chamber.
- the generated fluorine-based gas is discharged from the fluorine-based gas outlet 22, and the hydrogen gas generated on the cathode chamber 4 side is discharged from the hydrogen gas outlet 23.
- the raw materials for electrolysis are reduced by electrolysis.
- HF hydrogen fluoride
- HF gas as a raw material gas is directly supplied into the electrolytic bath 2 from the raw material gas supply port 26 extending from the outside of the electrolytic cell 1 to the electrolytic bath 2 in the cathode chamber.
- HF has a boiling point of about 20 ° C. Since the gas generator is supplied with gas, the raw material gas supply pipe 25 needs to be heated to about 35 to 40 ° C. Yes. The same applies to the ammonium fluoride hydrofluoric acid electrolytic bath.
- the raw material gas supply pipe 25 extending from the outside of the electrolytic cell 1 to the electrolytic bath 2 of the cathode chamber, and the illustrated ammonia, which has exactly the same configuration as the HF gas supply pipe, are shown below.
- NH) HF gas and NH gas are supplied directly into the electrolytic bath 2 from the gas supply pipe.
- the supply of HF gas and NH gas depends on the liquid level detection sensor that monitors the liquid level of the electrolytic bath 2.
- the melting point of a mixed molten salt of potassium fluoride, fluoride fluoride or ammonium fluoride fluoride varies depending on the composition ratio of its components.
- the mixed molten salt for electrolytic baths commonly used for fluorine generation is KF '2HF, and its melting point is 70 ° C.
- the ratio of HF in the electrolytic bath to KF is controlled in the range of 1.9 to 2.3.
- the melting point of the electrolytic bath rises rapidly and exceeds 100 ° C.
- the melting point deviates from the control capability of the gas generator, the molten state of the electrolytic bath cannot be maintained, and as a result, electrolysis becomes impossible and the gas generator does not function.
- the HF concentration exceeds the upper limit of KF '2.3 HF, the melting point of the electrolytic bath will decrease, but it will cause problems when the carbon anode collapses or the corrosion of the gas generator progresses when HF increases. . In either case, stable gas supply cannot be achieved.
- the raw material gas to the electrolytic bath Supply must be able to continue stably.
- Patent Document 2 As a method for solving the problem of blockage of the source gas supply pipe due to the electrolytic bath in Patent Document 1, for example, a method as described in Patent Document 2 below has been proposed.
- the raw material gas supply pipe 25 is added with a nitrogen gas supply pipe 40 and various members for controlling the flow thereof.
- the pressure of nitrogen supplied to the nitrogen supply pipe 40 is adjusted by the pressure reducing valve 46, and it is stored once in the nitrogen tank 44 via the automatic valve 45.
- the nitrogen stored in the nitrogen tank 44 is adjusted again with the pressure reducing valve 43 in the nitrogen supply pipe 40.
- the flow rate is adjusted with the flow meter 42 and supplied to the raw material gas supply pipe 25 through the automatic valve 41.
- the specific operation is as follows.
- the source gas remains in the source gas supply pipe 25 at this time, it quickly dissolves in the electrolytic bath 2, so that the inside of the source gas supply pipe 25 connected to the cathode chamber 4 is in a reduced pressure state.
- the electrolytic bath 2 is sucked up into the raw material gas supply pipe 25 through the raw material gas supply port 26 whose viscosity is low in the molten state.
- the heater 24 attached to the source gas supply pipe 25 has a heating condition of 35 to 40 ° C and is lower than the electrolytic bath 2 melting point of 50 to 70 ° C. Part of bath 2 cools and solidifies.
- the automatic valve 41 is opened, nitrogen gas is supplied to the raw material gas supply pipe 25 and remains in the raw material gas supply pipe 25, and all of the raw material gas remaining in the electrolytic bath 2 is supplied.
- the inside of the raw material gas supply pipe 25 is cleaned after being washed away.
- Patent Document 1 Japanese Patent Publication No. 9 505853
- Patent Document 2 Japanese Patent No. 3527735
- a gas generator that generates a fluorine-based gas causes a sudden power failure during the supply of the raw material gas. Or the piping in the gas generator is obstructed, or a person has discovered and illustrated a gas leak or other anomaly, or operated the EMO (emergency stop) button, or the temperature or pressure If the sequencer determines that the liquid level is abnormal or equivalent to EMO, the gas generator may be brought to an emergency stop. Specifically, (1) the power source (electricity) is shut off, and (2) all automatic valves on the primary and secondary pipes of the equipment in Fig. 2 (45 on the nitrogen gas supply pipe 40 in Fig.
- the automatic valve referred to here is a valve that is opened and closed by an external electric signal or gas pressure, such as a solenoid valve or a pneumatic valve.
- the gas generator of FIG. 2 represented by Patent Document 2 is provided on the nitrogen gas supply pipe 40! /, And is stored in the nitrogen tank 44 and used as a raw material using the gas pressure. Supply nitrogen to the gas supply pipe 25 for a certain period of time. ⁇ The raw material gas in the raw gas supply pipe 25 is forced to flow toward the electrolytic bath 2 so that the electrolytic bath into the raw gas supply pipe 25 is supplied. It is possible to prevent the absorption, lifting and solidification of 2.
- the gas generator in FIG. 2 requires members such as the nitrogen tank 44 and the pressure reducing valve 46 on the nitrogen gas supply pipe 40, and the pipe becomes complicated.
- FIG. 2 after EMO stop In this gas generator, the electrolytic cell 1 is sealed in order to shut off the outside. In this state, if nitrogen gas is allowed to flow, for example, at 200 ccZ for 30 minutes as a cleaning condition for the feed pipe for the source gas, a total of 6 liters of nitrogen will be pushed toward the cathode chamber 4 with one EMO stop. Become.
- the size of the electrolytic cell 1 varies depending on the amount of fluorine gas generated. As an example, if the space of the cathode chamber 4 is about 60 liters in a 100A capacity device, 6 liters of nitrogen gas is pushed into it. This simply increases the pressure by 10%. If this pressure difference causes an imbalance in the liquid level, and if EMO is stopped again for some reason, further imbalance in the liquid level will be superimposed, making it impossible to restart the gas generator easily.
- the present invention has been made in view of the above-described problems, and the object of the present invention is to stop supply of raw materials such as HF and NH when the operation is stopped due to an abnormality while having a simple configuration.
- the present invention includes an electrolytic bath having a mixed molten salt power containing hydrogen fluoride or an ammonium salt in an electrolytic cell including an anode chamber and a cathode chamber, and electrolyzing the electrolytic bath.
- a gas generator for generating fluorine-based gas for example, fluorine or nitrogen trifluoride
- a raw material supply pipe for supplying a raw material for electrolysis reaching the electrolytic bath in the electrolytic cell;
- a normally closed type valve provided in the middle of the raw material supply pipe and a normally open type valve that connects the raw material supply pipe downstream of the normal close type valve and the gas phase portion of the electrolytic cell.
- a raw material supply system having a bypass pipe In the fluorine gas generator of the present invention, it is preferable that the raw material supply pipe is provided on the cathode chamber side of the electrolytic cell.
- the fluorine-based gas generator of the present invention can be used even when the normally closed valve of the raw material supply pipe is closed and the supply of the raw material is stopped, or even when an emergency stop is performed during the supply of the raw material. It is preferable that an open valve is opened to balance the pressure in the raw material supply pipe with the pressure in the electrolytic cell.
- the normally closed type valve here means that the valve is closed in a natural state, and when necessary, the valve is opened by an external electrical signal or gas pressure. Contrary to the normal open type valve, the valve is open in the natural state, and is closed by an external electrical signal or gas pressure when necessary. It is an automatic valve.
- a nitrogen gas supply pipe for supplying nitrogen gas is provided between the normally closed valve of the raw material supply pipe and the normally open valve of the bypass pipe. It is preferable to be further connected to the raw material supply pipe.
- FIG. 3 is a schematic view of the main part of the fluorine gas generator according to the embodiment of the present invention.
- 1 is an electrolytic cell
- 2 is an electrolytic bath made of KF'HF mixed molten salt
- 3 is an anode chamber
- 4 is a cathode chamber.
- 5 is a first liquid level detecting means for detecting the liquid level of the anode chamber.
- 6 is a second liquid level detecting means for detecting the liquid level of the cathode chamber.
- 11 is a thermometer for measuring the temperature of the electrolytic bath 2
- 12 is a hot water jacket for heating and melting the electrolytic bath 2 on the outer periphery of the electrolytic bath 1, and a heating device (temperature adjusting means) connected thereto.
- . 22 is an outlet for fluorine gas generated from the anode chamber 3.
- 23 is a hydrogen gas generating port that also generates 4 forces in the cathode chamber, followed by an automatic valve 89 for shutting down when EMO is stopped.
- 25 is an HF supply pipe for supplying HF to the electrolytic cell 1.
- 80 is a bypass that is a bypass pipe. 81 is an automatic valve arranged on the HF supply pipe, 82 is an automatic valve arranged on the bypass 80, and 83 monitors the flow rate of HF passing through the HF supply pipe 25. It is a flow meter. 84 is a pressure gauge for measuring the pressure of HF.
- the bypass 80 connects the source gas supply pipe 25 and the gas phase portion of the cathode chamber 4 of the electrolytic cell 1.
- the abatement tower 14 is a detoxification tower that removes HF from the mixed gas of hydrogen and HF discharged from the cathode chamber 4.
- the abatement tower 14 can be used in the present invention before or after the automatic valve 89.
- 15 is an HF detoxification tower that separates fluorine gas by removing only HF from the mixed gas of HF and HF discharged from the anode chamber 3.
- the HF removal tower 15 can be used in the present embodiment either before or after the automatic valve 91.
- an HF supply stop detection device for detecting the stop of HF supply is provided.
- the automatic valve 81, the automatic valve 82, and the HF supply stop detection device are provided with HF distribution.
- a tube occlusion protection measure is constructed.
- the electrolytic cell 1 is made of a metal or alloy such as Ni, Monel, pure iron, stainless steel, or the like.
- the electrolytic cell 1 is separated into an anode chamber 3 and a cathode chamber 4 by a partition wall 16 which is also N or Monelka.
- An anode 51 is disposed in the anode chamber 3.
- the cathode chamber 4 is provided with a cathode 52.
- Ni, iron or the like as the cathode.
- the heating device 12 (temperature adjusting means) can sense the temperature measured by the thermometer 11, and can adjust to the desired electrolytic bath temperature. Thereby, for example, the electrolytic bath 2 can be heated to 85 to 90 ° C. to maintain a molten state. If temperature control is difficult with just a hot water jacket, an electric heater may be used as a supplement. Moreover, if the heat capacities match, the electrolytic bath 2 can be melted only by an electric heater.
- the upper lid 17 of the electrolytic cell 1 is generated from the anode chamber 3 and a purge gas inlet / outlet of gas piping force (not shown) which is one of the pressure maintaining means for maintaining the inside of the anode chamber 3 and the cathode chamber 4 at atmospheric pressure.
- a fluorine gas outlet 22 through which the fluorine gas is discharged and a hydrogen gas outlet 23 generated from the cathode chamber 4 are provided.
- the upper lid 17 has a first liquid level detection sensor 5 and a second liquid level. A detection sensor 6 is provided!
- the raw material gas supply pipe 25 is connected to an HF supply source outside the gas generator, and extends from the connecting portion to the raw material gas supply port 26 disposed in the cathode chamber 4 of the electrolytic cell 1.
- the raw material gas supply pipe 25 is covered with a temperature adjustment heater 24 for supplying HF in a gas phase, and is heated in the range of 35 to 40 ° C.
- the raw material gas supply pipe 25 has a manual valve 66, a pressure gauge 31, a pressure gauge 34, a flow meter 83, an automatic valve 81, a pressure gauge 84, and an automatic valve 81 and pressure in order from the upstream side to the downstream side.
- a bypass 80 communicating with the cathode chamber 4 is provided in the raw material gas supply pipe 25 between the total 84, and an automatic valve 82 is disposed in the middle of the bypass 80.
- the pressure gauge 84 can be placed either before or after the bypass pipe 80 on the secondary side of the automatic valve 81.
- the automatic valve 81 opens to supply HF to the electrolytic bath 2 when the first liquid level detection sensor 5 and the second liquid level detection sensor 6 detect a decrease in the level of the electrolytic bath 2. .
- the automatic valve 82 is not shown! / ⁇
- the pressure inside the raw material gas supply pipe 25 is balanced with respect to the electrolytic cell 1 by opening and closing in conjunction with the HF supply stop detection device.
- a flow meter 83 is supplied to the electrolytic cell 1 through the raw material gas supply pipe 25 and monitors the flow rate of HF.
- the pressure in the cathode chamber 4 is maintained by the no-pass 80. Can do. Further, the pressure in the source gas supply pipe 25 at this time can be monitored by the pressure gauge 84.
- the automatic valve 81 arranged on the source gas supply pipe 25 is normally closed, and the automatic valve 82 arranged on the binos 80 is normal. It is preferable to use an open type. With this configuration, even if an emergency stop occurs such as when a power source is not secured due to an earthquake or power outage, the above operation can be performed automatically as a gas generator.
- the source gas supply pipe 25 is not depressurized due to dissolution of the source gas (HF gas) in the electrolytic bath 2 or clogged due to backflow or solidification of the electrolytic bath 2 caused by this, and nitrogen to the cathode chamber is not caused. Since there is no imbalance of the bath surface in the electrolytic cell due to gas introduction, the gas generator can be stopped safely and safely.
- the following effects are obtained. That is, when the supply of the raw material gas to the gas generator suddenly stops, the raw material gas may remain in the raw material gas supply pipe 25, and then the raw material gas dissolves into the electrolytic bath 2 so that the raw material gas supply pipe 25 The inside tends to depressurize. At this time, since the atmospheric gas immediately flows into the source gas supply pipe 25 from the gas phase portion of the cathode chamber 4 through the bypass 80 with the automatic valve 82 opened, the pressure in the source gas supply pipe 25 does not seem to be reduced. As a result, to the raw material gas supply pipe 25 Therefore, it is possible to prevent the source gas supply pipe 25 from being blocked due to the backflow or solidification of the electrolytic bath 2.
- This raw material gas supply system has a simpler structure than conventional fluorine-based gas generators, and it is possible to imbalance the bath surface in the electrolytic cell 1 and to prevent the electrolytic bath 2 from flowing into the raw material gas supply pipe 25.
- a gas generator that can prevent backflow and solidification can be provided.
- the automatic valve 82 can be replaced with a check valve.
- HF is flowing through the source gas supply pipe 25, it closes and nothing flows into the nopass 80.
- a gas sufficient to compensate for the decompression generated by the HF melting into the electrolytic bath 2 can be sent from the cathode chamber 4 to the source gas supply pipe 25 via the bypass 80. If possible, the functions are equivalent.
- the operation at the EMO stop in the gas generator is naturally effective, but the response after the HF supply operation is stopped is also effective. That is, in the gas generator according to the present embodiment, the raw material gas remaining in the raw material gas supply pipe 25 is dissolved in the electrolytic bath 2 when the raw material gas is stopped or stopped. Even if the pressure decreases, the atmospheric gas from the gas phase part of the cathode chamber 4 immediately flows into the source gas supply pipe 25 through the bypass, so the pressure in the source gas supply pipe 25 does not seem to decrease. As a result, blockage of the raw material gas supply pipe 25 due to the backflow or solidification of the electrolytic bath 2 to the raw material gas supply pipe 25 can be prevented.
- the nitrogen gas supply pipe 40 to the raw material gas supply pipe 25 in FIG. 2 and the accompanying members can be eliminated, and the production of the gas generator can be eliminated. Miniaturization is possible. Furthermore, in continuing the operation, the amount of nitrogen used can be reduced as compared with the prior art, and the number of members used in the gas generator can be reduced, so that the maintenance cost can be reduced accordingly.
- the raw material supply system according to the present invention is used when HF or NH is supplied in a gas state.
- FIG. 1 is a schematic view of a main part of a conventional gas generator.
- FIG. 2 is a schematic view of the main part of another conventional gas generator.
- FIG. 3 is a schematic view of a main part of a gas generator according to an embodiment of the present invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/064,704 US8366886B2 (en) | 2005-08-25 | 2006-06-28 | Fluorogas generator |
JP2007532029A JP4777989B2 (ja) | 2005-08-25 | 2006-06-28 | フッ素系ガス発生装置 |
CN2006800309201A CN101248216B (zh) | 2005-08-25 | 2006-06-28 | 氟系气体产生装置 |
EP06767483A EP1932949A4 (en) | 2005-08-25 | 2006-06-28 | FLUORINATED GAS GENERATOR |
KR1020087006144A KR101266707B1 (ko) | 2005-08-25 | 2008-03-13 | 불소계 가스 발생 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005244374 | 2005-08-25 | ||
JP2005-244374 | 2005-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007023615A1 true WO2007023615A1 (ja) | 2007-03-01 |
Family
ID=37771367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/312866 WO2007023615A1 (ja) | 2005-08-25 | 2006-06-28 | フッ素系ガス発生装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8366886B2 (ja) |
EP (1) | EP1932949A4 (ja) |
JP (1) | JP4777989B2 (ja) |
KR (1) | KR101266707B1 (ja) |
CN (1) | CN101248216B (ja) |
TW (1) | TWI390084B (ja) |
WO (1) | WO2007023615A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009014078A1 (ja) * | 2007-07-20 | 2009-01-29 | Toyo Tanso Co., Ltd. | フッ素系ガス及び水素ガス発生装置 |
JP2009242944A (ja) * | 2008-03-11 | 2009-10-22 | Toyo Tanso Kk | フッ素ガス発生装置 |
US20120085640A1 (en) * | 2009-06-29 | 2012-04-12 | Central Glass Company, Limited | Fluorine Gas Generation Device |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5332829B2 (ja) * | 2009-04-01 | 2013-11-06 | セントラル硝子株式会社 | フッ素ガス生成装置 |
JP5581676B2 (ja) | 2009-12-02 | 2014-09-03 | セントラル硝子株式会社 | フッ素ガス生成装置 |
TWI525042B (zh) * | 2010-09-16 | 2016-03-11 | 首威公司 | 氟化氫供應單元 |
TW201219686A (en) * | 2010-09-16 | 2012-05-16 | Solvay | Fluorine gas plant with seismic protection |
TWI551730B (zh) * | 2010-11-17 | 2016-10-01 | 首威公司 | 電解器設備 |
WO2013092773A1 (en) * | 2011-12-22 | 2013-06-27 | Solvay Sa | Liquid level control in an electrolytic cell for the generation of fluorine |
CN110965078A (zh) * | 2019-12-10 | 2020-04-07 | 中核二七二铀业有限责任公司 | 一种氟化氢供料的自动控制装置 |
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JPS527735B1 (ja) | 1970-05-15 | 1977-03-04 | ||
JPH02232386A (ja) * | 1989-03-03 | 1990-09-14 | Mitsui Toatsu Chem Inc | 溶融塩電解法によるガスの製造方法 |
JPH09505853A (ja) | 1994-09-14 | 1997-06-10 | ブリティッシュ・ニュークリア・フューエルズ・パブリック・リミテッド・カンパニー | フッ素セル |
JP2002339090A (ja) * | 2000-04-07 | 2002-11-27 | Toyo Tanso Kk | フッ素ガス発生装置 |
JP2004043885A (ja) * | 2002-07-11 | 2004-02-12 | L'air Liquide Sa Pour L'etude & L'exploitation Des Procedes Georges Claude | フッ素ガス生成装置 |
JP2004052105A (ja) * | 2002-05-29 | 2004-02-19 | Toyo Tanso Kk | フッ素ガス発生装置 |
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US2951021A (en) * | 1952-03-28 | 1960-08-30 | Nat Res Corp | Electrolytic production of titanium |
US5628894A (en) * | 1995-10-17 | 1997-05-13 | Florida Scientific Laboratories, Inc. | Nitrogen trifluoride process |
KR100485490B1 (ko) * | 2000-04-07 | 2005-04-28 | 도요탄소 가부시키가이샤 | 불소가스 발생장치 |
KR100519843B1 (ko) * | 2002-05-29 | 2005-10-06 | 도요탄소 가부시키가이샤 | 불소가스 발생장치 |
JP3617835B2 (ja) * | 2002-09-20 | 2005-02-09 | 東洋炭素株式会社 | フッ素ガス発生装置 |
KR100533411B1 (ko) * | 2002-11-08 | 2005-12-02 | 도요탄소 가부시키가이샤 | 불소가스 발생장치와 그 전해욕 액면 제어방법 |
JP3527735B1 (ja) * | 2002-11-20 | 2004-05-17 | 東洋炭素株式会社 | フッ素ガス発生装置 |
-
2006
- 2006-06-28 CN CN2006800309201A patent/CN101248216B/zh not_active Expired - Fee Related
- 2006-06-28 JP JP2007532029A patent/JP4777989B2/ja active Active
- 2006-06-28 US US12/064,704 patent/US8366886B2/en not_active Expired - Fee Related
- 2006-06-28 WO PCT/JP2006/312866 patent/WO2007023615A1/ja active Application Filing
- 2006-06-28 EP EP06767483A patent/EP1932949A4/en not_active Withdrawn
- 2006-07-06 TW TW095124690A patent/TWI390084B/zh not_active IP Right Cessation
-
2008
- 2008-03-13 KR KR1020087006144A patent/KR101266707B1/ko not_active IP Right Cessation
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JPS527735B1 (ja) | 1970-05-15 | 1977-03-04 | ||
JPH02232386A (ja) * | 1989-03-03 | 1990-09-14 | Mitsui Toatsu Chem Inc | 溶融塩電解法によるガスの製造方法 |
JPH09505853A (ja) | 1994-09-14 | 1997-06-10 | ブリティッシュ・ニュークリア・フューエルズ・パブリック・リミテッド・カンパニー | フッ素セル |
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JP2004043885A (ja) * | 2002-07-11 | 2004-02-12 | L'air Liquide Sa Pour L'etude & L'exploitation Des Procedes Georges Claude | フッ素ガス生成装置 |
JP2005097667A (ja) * | 2003-09-24 | 2005-04-14 | Air Liquide Japan Ltd | フッ素ガス生成装置 |
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Title |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009014078A1 (ja) * | 2007-07-20 | 2009-01-29 | Toyo Tanso Co., Ltd. | フッ素系ガス及び水素ガス発生装置 |
JP2009024222A (ja) * | 2007-07-20 | 2009-02-05 | Toyo Tanso Kk | フッ素系ガス及び水素ガス発生装置 |
JP2009242944A (ja) * | 2008-03-11 | 2009-10-22 | Toyo Tanso Kk | フッ素ガス発生装置 |
US20120085640A1 (en) * | 2009-06-29 | 2012-04-12 | Central Glass Company, Limited | Fluorine Gas Generation Device |
CN102803566A (zh) * | 2009-06-29 | 2012-11-28 | 中央硝子株式会社 | 氟气生成装置 |
Also Published As
Publication number | Publication date |
---|---|
US20090260981A1 (en) | 2009-10-22 |
EP1932949A1 (en) | 2008-06-18 |
TWI390084B (zh) | 2013-03-21 |
EP1932949A4 (en) | 2011-08-03 |
CN101248216B (zh) | 2010-06-16 |
CN101248216A (zh) | 2008-08-20 |
US8366886B2 (en) | 2013-02-05 |
JPWO2007023615A1 (ja) | 2009-02-26 |
JP4777989B2 (ja) | 2011-09-21 |
TW200712261A (en) | 2007-04-01 |
KR20080045196A (ko) | 2008-05-22 |
KR101266707B1 (ko) | 2013-05-22 |
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