Chemistry of inorganic compounds – Nitrogen or compound thereof – Binary compound
Reexamination Certificate
2005-06-21
2005-06-21
Langel, Wayne A. (Department: 1754)
Chemistry of inorganic compounds
Nitrogen or compound thereof
Binary compound
Reexamination Certificate
active
06908601
ABSTRACT:
The invention provides a method and apparatus for producing nitrogen trifluoride. The invention involves passing a working fluid through a heat engine cycle and using the mechanical energy generated by the working fluid to produce sufficient mixing intensity within a nitrogen trifluoride reactor. The method utilizes a working fluid vapor jet, such as a hydrogen fluoride vapor jet, to impart sufficient energy to the mixing zone of a reactor in order to disperse gaseous fluorine within a liquid ammonium acid fluoride melt. A gaseous reaction product stream is removed from the reactor, the reaction product stream comprising nitrogen trifluoride and a working fluid vapor. The working fluid is then separated from the nitrogen trifluoride and recycled for reuse in the process, thereby completing a heat engine cycle.
REFERENCES:
patent: 4001380 (1977-01-01), Gordon et al.
patent: 4091081 (1978-05-01), Woytek et al.
patent: 4543242 (1985-09-01), Aramaki et al.
patent: 4804447 (1989-02-01), Sartori
patent: 4933158 (1990-06-01), Aritsuka et al.
patent: 5084156 (1992-01-01), Iwanaga et al.
patent: 5085752 (1992-02-01), Iwanaga et al.
patent: 5628894 (1997-05-01), Tarancon
patent: 5637285 (1997-06-01), Coronell et al.
patent: 6010605 (2000-01-01), Tarancon
patent: 2003/0017098 (2003-01-01), Ohno et al.
patent: 198 36 807 (2000-02-01), None
Robert H. Perry and Cecil H. Chilton, Chemical Engineers' Handbook, Fifth Ed., 1969, McGraw-Hill Book Company, “Flow in Pipes and Channels”, 5-29, no month.
Walter J. Moore, Physical Chemistry, Third Ed., Prentice-Hall, Inc., 1962, Chapter 3, pp. 70-72, no month.
D. Filliaudeau and G. Picard, “Temperature Dependence of the Vapor Pressures and Electrochemical Windows of the NH4HF2-HF Mixtures,” Materials Science Forum, vol. 73-75 (1991) pp. 669-675, no month.
European Search Report for Application No. EP 03 25 0729 dated Mar. 9, 2004.
Patent Abstracts of Japan vol. 017, No. 452 (C-1099), Aug. 19, 1993 & JP 05 105411 A (Onoda Cement Co Ltd), Apr. 27, 1993 *abstract*.
Mohan Vasu R.
Satchell, Jr. Donald Prentice
Langel Wayne A.
Neida Philip H. Von
The BOC Group Inc.
Zebrak Ira Lee
LandOfFree
Method for the production of nitrogen trifluoride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the production of nitrogen trifluoride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of nitrogen trifluoride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3501482