Title:
ＮＭＰ水溶液の精製システム及び精製方法
Document Type and Number:
Japanese Patent JP6783384
Kind Code:
B2
Abstract:
In this NMP aqueous solution purification system 1, the generation of peroxides of NMP is suppressed. This NMP aqueous solution purification system 1 is provided with: a pervaporation membrane device 201 for removing water from an NMP aqueous solution to prepare an NMP concentrated solution; containers 101, 103, 106, 301 which is provided on the upstream side or the downstream side of the pervaporation membrane device 201 and stores the NMP aqueous solution or the NMP concentrated solution; and inert gas supply means L401-405, U402-U405 for filling gas phase parts of the containers 101, 103, 106, 301 with inert gas.
More Like This:
| WO/2020/050282 | FEEDSTOCK SOLUTION FLOW CONCENTRATION SYSTEM |
| JP2721694 | PROBLEM TO BE SOLVED: To collect pure water from wastewater. |
| JPH11197469 | SPIRAL MEMBRANE MODULE |
Inventors:
Ryosuke Terashi
Kyosuke Yamada
Satoshi Hibi
Kyosuke Yamada
Satoshi Hibi
Application Number:
JP2019516899A
Publication Date:
November 11, 2020
Filing Date:
February 26, 2018
Export Citation:
Assignee:
Organo Corporation
International Classes:
B01D61/36; B01D19/00; B01D61/00; B01D61/14; B01D61/58; B01D71/02; B01J39/04; B01J41/04; B01J47/02; B01J47/028; B01J47/04
Domestic Patent References:
| JP2016030233A | ||||
| JP2003081885A | ||||
| JP4298221A | ||||
| JP2015071139A | ||||
| JP2013018747A |
Foreign References:
| US20170043302 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata