Title:
ORGANIC MATERIAL LIQUID DEHYDRATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/154097
Kind Code:
A1
Abstract:
Provided is a method for processing a material liquid, which is an organic solution containing a small amount of water, using forward osmosis under a non-heated condition to obtain a dehydrated material liquid without causing degradation or change in quality of a solute. This method is for dehydrating a material liquid containing a first organic solvent, water, and a first solute, and comprises a dehydration step for bring the material liquid and an induction organic liquid containing a second organic solvent into contact with each other through a forward osmosis membrane to obtain a dehydrated material liquid that has the moisture content thereof reduced to less than 1 mass% through dehydration. In one mode, the initial moisture content of the material liquid in the dehydration step is not less than 1 mass% but less than 30 mass%, and the initial moisture content of the induction organic liquid is less than the initial moisture content of the material liquid.
Inventors:
OSAKI TAKAHIRO (JP)
KATAYAMA YUJI (JP)
TAKADA RYOICHI (JP)
SUZUMURA KEITARO (JP)
KATAYAMA YUJI (JP)
TAKADA RYOICHI (JP)
SUZUMURA KEITARO (JP)
Application Number:
PCT/JP2022/001207
Publication Date:
July 21, 2022
Filing Date:
January 14, 2022
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B01D61/00; B01D63/04; C07B63/00
Domestic Patent References:
| WO2020050282A1 | 2020-03-12 | |||
| WO2020241865A1 | 2020-12-03 |
Foreign References:
| JP2016155078A | 2016-09-01 | |||
| JP2012512740A | 2012-06-07 | |||
| JPS54119096A | 1979-09-14 | |||
| JP2019187380A | 2019-10-31 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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