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1. US20160168066 - Water control in acetic acid production processes

Office
États-Unis d'Amérique
Numéro de la demande 14964793
Date de la demande 10.12.2015
Numéro de publication 20160168066
Date de publication 16.06.2016
Numéro de délivrance 09428434
Date de délivrance 30.08.2016
Type de publication B2
CIB
C07C 51/12
CCHIMIE; MÉTALLURGIE
07CHIMIE ORGANIQUE
CCOMPOSÉS ACYCLIQUES OU CARBOCYCLIQUES
51Préparation d'acides carboxyliques, de leurs sels, halogénures ou anhydrides
10par réaction avec du monoxyde de carbone
12sur un groupe contenant de l'oxygène d'un composé organique, p.ex. d'un alcool
CPC
C07C 51/12
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
10by reaction with carbon monoxide
12on an oxygen-containing group in organic compounds, e.g. alcohols
C07C 51/44
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
42Separation; Purification; Stabilisation; Use of additives
43by change of the physical state, e.g. crystallisation
44by distillation
C07C 51/48
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
42Separation; Purification; Stabilisation; Use of additives
48by liquid-liquid treatment
C07C 51/50
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
42Separation; Purification; Stabilisation; Use of additives
50Use of additives, e.g. for stabilisation
Déposants LyondellBasell Acetyls, LLC
Inventeurs Noel C. Hallinan
John D. Hearn
David L. Ramage
Brian A. Salisbury
Daniel F. White
Titre
(EN) Water control in acetic acid production processes
Abrégé
(EN)

Processes for producing acetic acid are presented herein. One or more embodiments include processes for controlling downstream water concentration in acetic acid production process including contacting methanol and carbon monoxide in the presence of a reaction medium under carbonylation conditions sufficient to form a carbonylation product including acetic acid, wherein the reaction medium includes a carbonylation catalyst, water in an upstream water concentration of from 1 wt. % to 14 wt. % water, and a tertiary phosphine oxide; recovering acetic acid from the carbonylation product; and controlling a downstream water concentration by determining a target water concentration and introducing the tertiary phosphine oxide to the reaction medium at a rate, basicity, concentration or combination thereof sufficient to provide a downstream water concentration within 1 wt. % of the target water concentration.