Distillation: apparatus – Apparatus – Systems
Reexamination Certificate
2011-04-12
2011-04-12
Manoharan, Virginia (Department: 1771)
Distillation: apparatus
Apparatus
Systems
C159S016100, C202S173000, C202S186000, C202S201000, C203S005000, C203S049000, C203S078000, C203SDIG016
Reexamination Certificate
active
07922872
ABSTRACT:
A distillation apparatus of the present invention includes a distillation column group in which a plurality of distillation columns including a condenser and a reboiler is connected in the form of a cascade; a gas-feeding line which feeds gas from the distillation column to a latter distillation column; a gas line which introduces the gas from the distillation column to the condenser attached to the distillation column; a liquid-line which withdraws a condensed liquid from the condenser; a liquid-reflux line which introduces a part of the condensed liquid from the liquid-line to the distillation column; a liquid-return line which returns the remainder of the condensed liquid from the liquid-line to a former distillation column; a valve provided on the liquid-return line; and a bypass line which connects the liquid-return line and the gas line so as to flow an evaporated gas generated in the liquid-return line to the gas line.
REFERENCES:
patent: 2820001 (1958-01-01), Van Dijck et al.
patent: 4543446 (1985-09-01), Foss et al.
patent: 6134915 (2000-10-01), Denzau et al.
patent: 6321565 (2001-11-01), Kihara et al.
patent: 6835287 (2004-12-01), Kihara et al.
patent: 7297237 (2007-11-01), Asano et al.
patent: 7368601 (2008-05-01), Yada et al.
patent: 2005/0044886 (2005-03-01), Okasinski et al.
patent: 467 617 (1937-06-01), None
Yamamoto, “Atomic Energy Chemical Engineering”, Nikkan Kogyo Shimbun, Ltd., 1976, pp. 10-48 (concise explanation).
Kanbe et al., “Development of Oxygen-18 Separation Unit by Oxygen Distillation”, No. 23, pp. 20-25 (abstract).
Kihara et al., “Development of Oxygen-18 Separation Unit by Oxygen Distillation”, No. 23, pp. 14-19 (abstract).
Extended European Search Report in 07 254 585.8 dated Jun. 1, 2010.
Kambe Takashi
Kihara Hitoshi
Manoharan Virginia
Nixon & Vanderhye P.C.
Taiyo Nippon Sanso Corporation
LandOfFree
Distillation apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Distillation apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distillation apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2667307