Title:
METHOD FOR PRODUCING PURIFIED AQUEOUS HYDROGEN PEROXIDE SOLUTION
Document Type and Number:
WIPO Patent Application WO/2022/270454
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method for producing an aqueous hydrogen peroxide solution, whereby it becomes possible to reduce impurities including organic substances and prevent the formation of bubbles or an odor. The solution for the problem is a method for producing a purified aqueous hydrogen peroxide solution, the method including a specific osmosis membrane treatment step for bringing a crude aqueous hydrogen peroxide solution containing impurities into contact with a reverse osmosis membrane. In the osmosis membrane treatment step, the pressure (MPaG) of the reverse osmosis membrane and the linear velocity (m3/(m2·h)) of the aqueous hydrogen peroxide solution are adjusted in such a manner that a first integrated value that is a product of a value of the pressure of the reverse osmosis membrane and a value of the linear velocity of the aqueous hydrogen peroxide solution becomes less than 0.15.
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Inventors:
SHIGETA KOHEI (JP)
KUSHIDA YASUHIRO (JP)
KUSHIDA YASUHIRO (JP)
Application Number:
PCT/JP2022/024484
Publication Date:
December 29, 2022
Filing Date:
June 20, 2022
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C01B15/013; B01D61/02; B01D69/00
Foreign References:
| JPH0733408A | 1995-02-03 | |||
| JPH10330102A | 1998-12-15 | |||
| JPH09102480A | 1997-04-15 | |||
| JP2004089962A | 2004-03-25 | |||
| JP2007014878A | 2007-01-25 | |||
| JPH09271647A | 1997-10-21 | |||
| US20170113932A1 | 2017-04-27 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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