Process for removing acetone from a stream comprising acetone, methyl acetate and methyl iodide
US9233902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Oct 26, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/83
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.