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1. WO2000043334 - METHOD AND INSTALLATION FOR SEPARATING AND PURIFYING DIPHENOLS IN THE PHENOL AND PHENOL DERIVATIVES INDUSTRY

Publication Number WO/2000/043334
Publication Date 27.07.2000
International Application No. PCT/FR2000/000166
International Filing Date 25.01.2000
Chapter 2 Demand Filed 24.07.2000
IPC
C07C 37/68 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
68Separation; Purification; Stabilisation; Use of additives
C07C 37/74 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
68Separation; Purification; Stabilisation; Use of additives
70by physical treatment
74by distillation
CPC
C07C 37/685
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
68Purification; separation; Use of additives, e.g. for stabilisation
685Processes comprising at least two steps in series
C07C 37/74
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
68Purification; separation; Use of additives, e.g. for stabilisation
70by physical treatment
74by distillation
Applicants
  • RHODIA CHIMIE [FR/FR]; 26 Quai Alphonse-le-Gallo F-92512 Boulogne Billancourt Cedex, FR (AllExceptUS)
  • BOURDON, Jacques [FR/FR]; FR (UsOnly)
  • CLERIN, Daniel [FR/FR]; FR (UsOnly)
Inventors
  • BOURDON, Jacques; FR
  • CLERIN, Daniel; FR
Agents
  • MONCHENY, Michel; Cabinet Lavoix 9, place d'Estienne d'Orves F-75441 Paris Cedex 09, FR
Priority Data
99/0090825.01.1999FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD AND INSTALLATION FOR SEPARATING AND PURIFYING DIPHENOLS IN THE PHENOL AND PHENOL DERIVATIVES INDUSTRY
(FR) PROCEDE ET INSTALLATION DE SEPARATION ET PURIFICATION DES DIPHENOLS DANS L'INDUSTRIE DU PHENOL ET DE SES DERIVES
Abstract
(EN)
A method and installation for separating and purifying a crude mixture containing hydroquinone, resorcinol and possibly tars and/or catechol, comprising the following steps: - a possible distillation stage (1) in order to obtain a catechol head, - the foot (1) or crude mixture undergoes distillation (II) in order to obtain a fraction that is rich in resorcinol, - the foot of (II) undergoes distillation (III) in order to obtain a fraction that is rich in hydroquinone, whereupon said rich fractions are refined (IV or V). Preferably, one or several stages in which tar is removed (I,1') precede stage (I) or (II).
(FR)
Procédé et installation de séparation et purification d'un mélange brut contenant hydroquinone, résorcinol, éventuellement goudrons et/ou catéchol, comprenant: une éventuelle étape de distillation (I) conçue pour obtenir du catéchol en tête; le pied de (I), ou le mélange brut, est soumis à une étape de distillation (II) conçue pour obtenir en tête une fraction riche en résorcinol; le pied de (II) est soumis à une étape de distillation (III) conçue pour obtenir en tête une fraction riche en hydroquinone, puis on soumet ces fractions riches à du raffinage (IV ou V). On fait de préférence précéder l'étape (I) ou (II) d'une ou plusieurs étapes de dégoudronnage (1, 1').
Also published as
NO20013619
Latest bibliographic data on file with the International Bureau