Electrolytic apparatus for producing fluorine or nitrogen trifluoride
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C25B-001/00
C25C-001/00
C25C-007/00
출원번호
US-0798146
(2007-05-10)
등록번호
US-8142623
(2012-03-27)
우선권정보
JP-2006-013255 (2006-01-20)
발명자
/ 주소
Tojo, Tetsuro
Hiraiwa, Jiro
Takebayashi, Hitoshi
Kodama, Masashi
출원인 / 주소
Toyo Tanso Co., Ltd.
대리인 / 주소
Birch, Stewart, Kolasch & Birch, LLP
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
It is a task of the present invention to provide an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt, the electrolytic apparatus being advantageous in that the electrolysis can be performed without the occurrence of the
It is a task of the present invention to provide an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt, the electrolytic apparatus being advantageous in that the electrolysis can be performed without the occurrence of the anode effect even at a high current density and without the occurrence of an anodic dissolution. In the present invention, this task has been accomplished by an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt at an applied current density of from 1 to 1,000 A/dm2, the electrolytic apparatus using a conductive diamond-coated electrode as an anode.
대표청구항▼
1. An electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt at an applied current density of from 1 to 1,000 A/dm2, which comprises: an electrolytic cell which is partitioned into an anode chamber and a cathode chamber by a
1. An electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt at an applied current density of from 1 to 1,000 A/dm2, which comprises: an electrolytic cell which is partitioned into an anode chamber and a cathode chamber by a partition wall,an anode which is disposed in said anode chamber, anda cathode which is disposed in said cathode chamber,said electrolytic cell having an inlet for feeding thereto a hydrogen fluoride-containing molten salt as an electrolysis liquid or a raw material for said hydrogen fluoride-containing molten salt,said anode chamber having an anode gas outlet for withdrawing gas from said electrolytic cell,said cathode chamber having a cathode gas outlet for withdrawing gas from said electrolytic cell,said anode comprising a conductive substrate and a coating layer formed on at least a part of the surface of said conductive substrate,wherein at least a surface portion of said conductive substrate is comprised of a conductive carbonaceous material, andwherein said coating layer is comprised of a conductive carbonaceous material having a diamond structure,wherein the ratio of the horizontal cross-sectional area of said cathode chamber to the horizontal cross-sectional area of said anode chamber is 2 or more. 2. The electrolytic apparatus according to claim 1, wherein the whole of said conductive substrate is comprised of a conductive carbonaceous material. 3. The electrolytic apparatus according to claim 1, wherein said electrolytic cell is columnar. 4. The electrolytic apparatus according to claim 3, wherein said electrolytic cell is cylindrical or rectangularly parallelepipedic. 5. The electrolytic apparatus according to claim 1 or 2, which is provided with an anode chamber pressure adjusting means for adjusting the internal pressure of said anode chamber and a cathode chamber pressure adjusting means for adjusting the internal pressure of said cathode chamber. 6. The electrolytic apparatus according to claim 1 or 2, wherein: said anode chamber is provided with an anode chamber liquid surface detecting means for detecting the height of the surface of said electrolysis liquid in said anode chamber, andsaid cathode chamber is provided with a cathode chamber liquid surface detecting means for detecting the height of the surface of said electrolysis liquid in said cathode chamber. 7. The electrolytic apparatus according to claim 1 or 2, which is provided with a temperature adjusting means for adjusting the internal temperature of said electrolytic apparatus. 8. The electrolytic apparatus according to claim 1 or 2, which is provided with an inert gas feeding means for feeding an inert gas to said cathode chamber. 9. A system for feeding fluorine or nitrogen trifluoride to a reactor for performing a reaction using fluorine or nitrogen trifluoride, said system comprising: the electrolytic apparatus of claim 1 or 2, anda pressurizing apparatus for pressurizing fluorine or nitrogen trifluoride produced using said electrolytic apparatus,wherein, in operation, feeding of fluorine or nitrogen trifluoride from said system to a reactor for performing a reaction using fluorine or nitrogen trifluoride is performed through said pressurizing apparatus. 10. The system according to claim 9, which is provided with a means for mixing gas withdrawn from said cathode gas outlet with an inert gas to dilute the gas withdrawn, followed by removal of the resultant diluted gas from said system. 11. The system according to claim 9, wherein said electrolytic apparatus and said pressurizing apparatus are accommodated in a casing. 12. A system for feeding fluorine or nitrogen trifluoride to a reactor for performing a reaction using fluorine or nitrogen trifluoride, said system comprising: the electrolytic apparatus of claim 1 or 2,a purification apparatus for purifying fluorine or nitrogen trifluoride produced using said electrolytic apparatus, anda pressurizing apparatus for pressurizing fluorine or nitrogen trifluoride purified using said purification apparatus,wherein, in operation, feeding of fluorine or nitrogen trifluoride from said system to a reactor for performing a reaction using fluorine or nitrogen trifluoride is performed through said pressurizing apparatus. 13. The system according to claim 12, which is provided with a means for mixing gas withdrawn from said cathode gas outlet with an inert gas to dilute the gas withdrawn, followed by removal of the resultant diluted gas from said system. 14. The system according to claim 12, wherein said electrolytic apparatus, said purification apparatus and said pressurizing apparatus are accommodated in a casing. 15. The electrolytic apparatus according to claim 1, wherein said conductive carbonaceous material constituting at least a surface portion of said conductive substrate is amorphous carbon. 16. The electrolytic apparatus according to claim 15, wherein the area of said coating layer formed on at least a part of the surface of said conductive substrate is 10% or more of the entire surface area of said conductive substrate. 17. The electrolytic apparatus according to claim 15, wherein said conductive substrate has the shape of a plate, and said coating layer is formed only on two surfaces of said conductive substrate which are perpendicular to the thickness wise direction of said conductive substrate.
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이 특허에 인용된 특허 (3)
Tojo, Tetsuro; Hiraiwa, Jiro; Takebayashi, Hitoshi; Tada, Yoshitomi, Apparatus for generating fluorine gas.
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