The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2026
Filed:
Sep. 30, 2021
Ineos Acetyls Uk Limited, Lyndhurst, GB;
James William Brace, Camerton, GB;
Ineos Acetyls UK Limited, Lyndhurst, GB;
Abstract
The present disclosure relates generally to processes and systems for distillation of acetic acid products. In one aspect, the disclosure provides a process for separating a feed stream comprising acetic acid and propionic acid in a distillation column. The process includes introducing a feed stream into the column through a feed inlet; withdrawing a first product stream comprising acetic acid and propionic acid from a first draw outlet disposed at a level above the level of the feed inlet; and withdrawing a second product stream comprising acetic acid and propionic acid from a second draw outlet disposed at a level between the level of the feed inlet and the level of the first draw outlet. The volume ratio of the first product stream to the second product stream is in the range of 1:9 to 19:1; and the amount of propionic acid present in the second product stream is at least 50 ppmw greater than the amount of propionic acid present in the first product stream.