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:
Jan. 12, 2016
Filed:
Dec. 23, 2009
Sean Anthony Hennigan, Hull, GB;
David Edward George Jeffers, Woking, GB;
Martin John Sellers, Wokingham, GB;
Stephen James Smith, Cottingham, GB;
Peter John Wilson, Hedon, GB;
Sean Anthony Hennigan, Hull, GB;
David Edward George Jeffers, Woking, GB;
Martin John Sellers, Wokingham, GB;
Stephen James Smith, Cottingham, GB;
Peter John Wilson, Hedon, GB;
BP CHEMICALS LIMITED, Middlesex, GB;
Abstract
Process for removing acetone from a stream including acetone (A), methyl acetate (MA) and methyl iodide (MI), by (a) introducing the stream into a first distillation zone (FDZ); (b) introducing acetic acid (AA) into the FDZ, by adding AA to the stream or by introducing AA to the FDZ at or above the introduction point of the stream, or a combination thereof; (c) removing from the FDZ an overhead stream including MI and a bottoms stream containing A, MA, AA, and a reduced amount of MI; (d) introducing the bottoms stream into a second distillation zone (SDZ); (e) removing from the SDZ an overhead stream containing MA and MI and a bottoms stream containing A, MA and AA; (f) introducing the bottoms stream from (e) into a third distillation zone (TDZ); removing from the TDZ an overhead stream containing MA and A and a bottoms stream containing MA and AA.