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. 15, 2010
Filed:
Jun. 09, 2006
Robert Sterling Kline, Johnson City, TN (US);
Gregory Abbott Wellman, Jr., Kingsport, TN (US);
Brandon Tyler Earls, Kingsport, TN (US);
Jerry Lee Bewley, Church Hill, TN (US);
Robert Sterling Kline, Johnson City, TN (US);
Gregory Abbott Wellman, Jr., Kingsport, TN (US);
Brandon Tyler Earls, Kingsport, TN (US);
Jerry Lee Bewley, Church Hill, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Disclosed is a process for the production of acetic acid or mixtures of acetic acid and acetic anhydride in a carbonylation process wherein a mixture comprising methyl acetate and/or dimethyl ether and methyl iodide is contacting in the liquid phase with carbon monoxide in the presence of a carbonylation catalyst at elevated pressures and temperatures. Methanol, water, or a mixture thereof is added to an acetic anhydride-containing stream within a flash evaporation zone to convert some or all of the acetic anhydride to acetic acid and optionally methyl acetate and to provide heat for the evaporation of a portion of the product effluent produced by the carbonylation process.