Title:
METHOD AND DEVICE FOR SEPARATION AND CONCENTRATION BY EVAPORATION OF MIXTURE WITH SEPARATION FACTOR OF APPROX. 1
Document Type and Number:
WIPO Patent Application WO/2002/041977
Kind Code:
A1
Abstract:
A method for separation and concentration of a mixture, comprising the step of operating at least one or a part of distillation towers forming a distillation cascade by a dephlegmator for simultaneously performing a heat exchange and an evaporation to reduce the hold-up amount of liquid in an evaporation device so as to shorten a startup time, whereby a wasteful operating cost required for startup can be reduced, and a productivity can be increased remarkably.
Inventors:
ASANO KOUICHI (JP)
HAYASHIDA SHIGERU (JP)
EGOSHI NOBUAKI (JP)
KAWAKAMI HIROSHI (JP)
HAYASHIDA SHIGERU (JP)
EGOSHI NOBUAKI (JP)
KAWAKAMI HIROSHI (JP)
Application Number:
PCT/JP2001/010203
Publication Date:
May 30, 2002
Filing Date:
November 22, 2001
Export Citation:
Assignee:
NIPPON OXYGEN CO LTD (JP)
ASANO KOUICHI (JP)
HAYASHIDA SHIGERU (JP)
EGOSHI NOBUAKI (JP)
KAWAKAMI HIROSHI (JP)
ASANO KOUICHI (JP)
HAYASHIDA SHIGERU (JP)
EGOSHI NOBUAKI (JP)
KAWAKAMI HIROSHI (JP)
International Classes:
B01D3/14; B01D3/32; B01D59/04; F25J3/02; F25J3/06; F25J3/08; (IPC1-7): B01D59/04; B01D3/14
Foreign References:
| JP2001239101A | 2001-09-04 | |||
| US4315902A | 1982-02-16 | |||
| JPH0263501A | 1990-03-02 |
Other References:
See also references of EP 1338327A4
Attorney, Agent or Firm:
Shiga, Masatake (23-3 Takadanobaba 3-chome Shinjuku-ku, Tokyo, JP)
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