Title:
有機溶媒の精製方法及び精製装置
Document Type and Number:
Japanese Patent JP7146568
Kind Code:
B2
Abstract:
To provide a method and apparatus for purifying an organic solvent, in which, when purifying an organic solvent that is miscible with water using an ion exchange resin, the ion exchange resin can be exchanged at an appropriate timing by detecting a sign of beginning of leakage of ionic impurities from the ion exchange resin.SOLUTION: Provided is a method and apparatus for purifying an organic solvent, in which two packed towers packed with an ion exchange resin are connected in series to pass an organic solvent through the two packed towers, and, assuming the packed towers on the upstream side and the downstream side in the flow direction of the organic solvent to be the front stage packed tower and the rear stage packed tower, respectively, the specific resistance or conductivity of the organic solvent at the outlet of the front stage packed tower is measured.SELECTED DRAWING: Figure 1
Inventors:
Kyosuke Yamada
Ryosuke Terashi
Atsushi Hisamatsu
Ryosuke Terashi
Atsushi Hisamatsu
Application Number:
JP2018199948A
Publication Date:
October 04, 2022
Filing Date:
October 24, 2018
Export Citation:
Assignee:
Organo Corporation
International Classes:
B01J47/022; B01D61/36; B01J39/05; B01J39/07; B01J41/05; B01J41/07; B01J47/026; B01J47/04; B01J49/85; C07D207/267
Domestic Patent References:
| JP5294902A | ||||
| JP2014144937A | ||||
| JP2016030233A | ||||
| JP2014144936A | ||||
| JP6206069A | ||||
| JP2015071139A |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata