METHOD AND SYSTEM FOR PRODUCING PURIFIED AQUEOUS HYDROGEN PEROXIDE SOLUTION

Title:

METHOD AND SYSTEM FOR PRODUCING PURIFIED AQUEOUS HYDROGEN PEROXIDE SOLUTION

Document Type and Number:

WIPO Patent Application WO/2018/155465

Kind Code:

A1

Abstract:

Provided are a method and system for efficiently producing a purified aqueous hydrogen peroxide solution having a high purity. This method for producing a purified aqueous hydrogen peroxide solution comprises: step A for vaporizing a raw material containing a crude aqueous hydrogen peroxide solution; step B for condensing at least a portion of the gas and liquid obtained in step A, and separating the gas and liquid into a gas phase and a liquid phase; and step C for returning, into the raw material, at least a portion of a separation liquid which is the separated liquid phase, wherein step C further includes step D for adjusting the concentration of hydrogen peroxide in the separation liquid.

Inventors:

SHIGETA KOHEI (JP)
KUSHIDA YASUHIRO (JP)
YAMAMOTO TETSUYA (JP)
MATSUURA SHINICHIRO (JP)
IKEDA HIDETOSHI (JP)

Application Number:

PCT/JP2018/006097

Publication Date:

August 30, 2018

Filing Date:

February 21, 2018

Export Citation:

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Assignee:

MITSUBISHI GAS CHEMICAL CO (JP)

International Classes:

C01B15/013; B01D1/00; B01D3/14; B01J39/04; B01J41/04; B01J47/04

Foreign References:

JPH0780227A	1995-03-28
JP2001172008A	2001-06-26
JPH09503990A	1997-04-22