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:
Jun. 03, 2014
Filed:
May. 31, 2011
Noel C. Hallinan, Loveland, OH (US);
Brian Salisbury, Oxford, PA (US);
Wayne Joseph Brtko, Glen Mills, PA (US);
Noel C. Hallinan, Loveland, OH (US);
Brian Salisbury, Oxford, PA (US);
Wayne Joseph Brtko, Glen Mills, PA (US);
Lyondell Chemical Technology, L.P., Houston, TX (US);
Abstract
The disclosure relates to a process in which methanol is carbonylated in a reaction zone in the presence of a catalyst to obtain a reaction mixture (A) comprising acetic acid, hydrogen iodide, methyl iodide, water and the catalyst. At least a part of the reaction mixture (A) is withdrawn from the reaction zone. The withdrawn part of the reaction mixture (A) is introduced into a flash zone where it is brought into contact with an alkylimidazolium iodide to form a secondary mixture (B), and where the secondary mixture (B) is separated to obtain a vapor stream (B) which comprises the acetic acid, water and methyl iodide, and a liquid stream (B) which comprises the catalyst, the alkylimidazolium iodide and hydrogen iodide. The vapor stream (B) is processed to purify the acetic acid, and the liquid stream (B) is recycled to the reaction zone. The reaction mixture (A) is brought into contact with the alkylimidazolium iodide in the flash zone