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1. WO2020111439 - ISOPROPYL ALCOHOL PURIFICATION METHOD

Publication Number WO/2020/111439
Publication Date 04.06.2020
International Application No. PCT/KR2019/009326
International Filing Date 26.07.2019
IPC
C07C 29/82 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
80by distillation
82by azeotropic distillation
C07C 31/10 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
10containing three carbon atoms
CPC
C07C 29/82
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; Use of additives, e.g. for stabilisation
76by physical treatment
80by distillation
82by azeotropic distillation
C07C 31/10
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
31Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
02Monohydroxylic acyclic alcohols
10containing three carbon atoms
Applicants
  • 주식회사 엘지화학 LG CHEM, LTD. [KR]/[KR]
Inventors
  • 김성균 KIM, Sung Kyun
  • 이성규 LEE, Sung Kyu
  • 박사은 PARK, Saeun
Agents
  • 정순성 CHUNG, Soon-Sung
Priority Data
10-2018-015217330.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) ISOPROPYL ALCOHOL PURIFICATION METHOD
(FR) PROCÉDÉ DE PURIFICATION D’ALCOOL D’ISOPROPYLE
(KO) 이소프로필 알코올의 정제방법
Abstract
(EN)
An isopropyl alcohol purification method according to an embodiment of the present application comprises the steps of: inputting feed including isopropyl alcohol, water, and a byproduct including normal propyl alcohol to an azeotropic distillation purification column; separating an azeotrope including isopropyl alcohol, normal propyl alcohol, and water to the top of the azeotropic distillation purification column, and inputting the separated azeotrope to a dehydration column; separating isopropyl alcohol and normal propyl alcohol to the bottom of the dehydration column, and inputting the separated isopropyl alcohol and normal propyl alcohol to a normal propyl alcohol purification column; and separating isopropyl alcohol to the top of the normal propyl alcohol purification column.
(FR)
La présente invention concerne un procédé de purification d’alcool d’isopropyle selon un mode de réalisation comprenant les étapes suivantes : l'entrée d’une alimentation comprenant l’alcool d’isopropyle, de l’eau, et un sous-produit comprenant de l’alcool de propyle normal au niveau d’une colonne de purification par distillation azéotrope ; la séparation d’un azéotrope comprenant de l’alcool d’isopropyle, de l’alcool de propyle normal, et de l’eau au sommet de la colonne de purification par distillation azéotrope, et l'entrée de l’azéotrope séparé au niveau d’une colonne de déshydratation ; la séparation de l’alcool d’isopropyle et de l’alcool de propyle normal au fond de la colonne de déshydratation, et l'entrée de l’alcool d’isopropyle séparé et de l’alcool de propyle normal au niveau d’une colonne de purification d’alcool de propyle normal ; et la séparation de l’alcool d’isopropyle au sommet de la colonne de purification d’alcool de propyle normal.
(KO)
본 출원의 일 실시상태에 따른 이소프로필 알코올의 정제방법은, 이소프로필 알코올; 물; 및 노멀 프로필 알코올을 포함하는 부산물을 포함하는 피드를 공비증류 정제탑에 투입하는 단계; 상기 공비증류 정제탑의 상부로 이소프로필 알코올, 노멀 프로필 알코올 및 물을 포함하는 공비 혼합물을 분리하여 탈수탑에 투입하는 단계; 상기 탈수탑의 하부로 이소프로필 알코올 및 노멀 프로필 알코올을 분리하여 노멀 프로필 알코올 정제탑에 투입하는 단계; 및 상기 노멀 프로필 알코올 정제탑의 상부로 이소프로필 알코올을 분리하는 단계를 포함한다.
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