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Title:
METHOD FOR DEHYDRATING AND CONCENTRATING WATER-CONTAINING SOLVENT
Document Type and Number:
Japanese Patent JP2012157791
Kind Code:
A
Abstract:

To provide a method for achieving high dehydration and concentration of a water-containing solvent at low running cost.

The water-containing solvent is evaporated in an evaporator 3 to generate water-containing solvent vapor. The water-containing solvent vapor is supplied into a non-permeating side chamber 13 of a dehydration membrane module 4, while inert gas (dehumidified at least either before introduced into a relay tank 5 or after drawn out of the relay tank) stored in the relay tank 5 is supplied into a permeating side chamber 14 of the dehydration membrane module 4. Water vapor having permeated the permeating side chamber 14 from the non-permeating side chamber 13 is purged with the inert gas after dehumidified, and the inert gas is returned to the relay tank 5 and recycled.


Inventors:
NINOMIYA KOHEI
KIKUCHI MASAO
Application Number:
JP2011000017266
Publication Date:
August 23, 2012
Filing Date:
January 28, 2011
Export Citation:
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Assignee:
UBE INDUSTRIES
NIPPON KAGAKU KIKAI SEIZO
International Classes:
B01D53/22
Domestic Patent References:
JP2009165994A2009-07-30
JPH10113531A1998-05-06
JP2009172463A2009-08-06
JPS63178824A1988-07-22
JPS56151604U1981-11-13
JPH02273518A1990-11-08
JPH05269333A1993-10-19
JP2009165994A2009-07-30
JPH10113531A1998-05-06
Attorney, Agent or Firm:
伊藤 克博
小野 暁子