Distillation: processes – separatory – Separating isotopes or tautomers
Reexamination Certificate
2007-11-20
2007-11-20
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
Separating isotopes or tautomers
C202S154000, C202S198000, C202S155000, C202S172000, C202S173000, C203S022000, C203S071000, C203S100000, C423S579000, C423SDIG018
Reexamination Certificate
active
10432164
ABSTRACT:
By using a dephlegmator which conducts distillation concurrently with heat exchange within at least one distillation column, or a portion of one distillation column, of a distillation cascade, the quantity of liquid holdup within the distillation apparatus is reduced and the start-up time is shortened. Consequently, the operational costs associated with startup are reduced, and productivity is improved markedly.
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Asano Koichi
Egoshi Nobuaki
Hayashida Shigeru
Kawakami Hiroshi
Koichi Asano
Nixon & Vanderhye P.C.
Taiyo Nippon Sanso Corporation
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