Method for concentrating heavy nitrogen isotope

Details Method for concentrating heavy nitrogen isotope Method for concentrating heavy nitrogen isotope

2007-03-12

2010-11-09

Manoharan, Virginia (Department: 1797)

Distillation: processes, separatory

Separating isotopes or tautomers

C062S643000, C062S919000, C203S078000, C203S080000, C203S084000, C423S351000, C423SDIG018, C202S154000, C202S155000, C202S172000

Reexamination Certificate

active

07828939

ABSTRACT:
A method for concentrating effectively the heavy nitrogen isotope15N to 50 atom % or more in which14N15N and/or15N2, which are molecules containing a heavy nitrogen isotope of15N, are concentrated by distilling successively nitrogen N2using plural distillation columns T1to T4each of which includes at least one condenser C1to C4and at least one reboiler R1to R4and is arranged in series, and a part of nitrogen in the distillation is drawn out to be subjected to isotope scrambling in an isotope scrambler S1, and nitrogen after the isotope scrambling is returned to the distillation to produce nitrogen N2with a15N concentration of 50 atom % or more.

REFERENCES:
patent: 6202440 (2001-03-01), Hayashida et al.
patent: 6321565 (2001-11-01), Kihara et al.
patent: 6461583 (2002-10-01), Hayashida et al.
patent: 6835287 (2004-12-01), Kihara et al.
patent: 7302812 (2007-12-01), Okasinski et al.
patent: 3-47518 (1991-02-01), None
patent: 11-188240 (1999-07-01), None
patent: 2001-104756 (2001-04-01), None
patent: 2003-210945 (2003-07-01), None
patent: 00/27509 (2000-05-01), None
International Search Report for PCT/JP2007/054765, mailed.
Kambe, T. et al., “Development of Oxygen- 18 Separation Unit by Oxygen Distillation”, Taiyo Nissan Giho, No. 23, pp. 20-25, (2004).

Affiliated with

Also associated with

Rating

Method for concentrating heavy nitrogen isotope 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 concentrating heavy nitrogen isotope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for concentrating heavy nitrogen isotope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4170253