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1. WO2020195454 - METHOD FOR DEHYDRATING ORGANIC SOLVENT AND METHOD FOR PURIFYING ORGANIC SOLVENT

Publication Number WO/2020/195454
Publication Date 01.10.2020
International Application No. PCT/JP2020/007412
International Filing Date 25.02.2020
IPC
C07C 23/08 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
23Compounds containing at least one halogen atom bound to a ring other than a six-membered aromatic ring
02Monocyclic halogenated hydrocarbons
08with a five-membered ring
C07C 29/76 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
29Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
74Separation; Purification; Stabilisation; Use of additives
76by physical treatment
C07C 31/125 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
31Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
02Monohydroxylic acyclic alcohols
125containing five to twenty-two carbon atoms
C07C 17/38 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
38Separation; Purification; Stabilisation; Use of additives
Applicants
  • 日本ゼオン株式会社 ZEON CORPORATION [JP]/[JP]
Inventors
  • 太田 圭祐 OTA Keisuke
  • 菅原 充 SUGAWARA Mitsuru
Agents
  • 杉村 憲司 SUGIMURA Kenji
Priority Data
2019-05922726.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR DEHYDRATING ORGANIC SOLVENT AND METHOD FOR PURIFYING ORGANIC SOLVENT
(FR) PROCÉDÉ DE DÉSHYDRATATION D'UN SOLVANT ORGANIQUE ET PROCÉDÉ DE PURIFICATION D'UN SOLVANT ORGANIQUE
(JA) 有機溶剤の脱水方法および有機溶剤の精製方法
Abstract
(EN)
The present invention provides a method for dehydrating an organic solvent, while suppressing an increase in the number of fine particles. A method for dehydrating an organic solvent according to the present invention comprises: a step (A) wherein a gas for dehydration is prepared; and a step (B) wherein the gas for dehydration, which has been prepared in the step (A), is brought into contact with an organic solvent. The step (A) comprises: a step (a1) wherein a gas for dehydration is obtained by having a gas, which has a dew point of -30°C or less, permeate through a gas filter; or a step (a2) wherein a gas for dehydration is obtained by adjusting the dew point of a gas, which has been caused to permeate through a gas filter, to -30°C or less.
(FR)
La présente invention concerne un procédé de déshydratation d'un solvant organique, dont l'augmentation du nombre de particules fines a été supprimé. Un procédé de déshydratation d'un solvant organique selon la présente invention comprend : une étape (A) consistant à préparer un gaz de déshydratation ; et une étape (B) consistant à mettre en contact le gaz de déshydratation qui a été préparé à l'étape (A), avec un solvant organique. L'étape (A) comprend : une étape (a1) consistant à obtenir un gaz de déshydratation à partir d'un gaz, qui a un point de rosée de -30 °C ou moins, qui passe à travers un filtre à gaz ; ou une étape (a2) consistant à obtenir un gaz de déshydratation par ajustement du point de rosée d'un gaz, qui a été amené à passer à travers un filtre à gaz, à -30 °C ou moins.
(JA)
本発明は、微粒子数の増加を抑制しつつ有機溶剤を脱水する方法を提供する。本発明の有機溶剤の脱水方法は、脱水用ガスを準備する工程(A)と、工程(A)で準備した脱水用ガスと、有機溶剤とを接触させる工程(B)とを含み、工程(A)が、露点が-30℃以下のガスをガスフィルターに通過させて脱水用ガスを得る工程(a1)、または、ガスフィルターを通過させたガスの露点を-30℃以下に調整して脱水用ガスを得る工程(a2)を含む。
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