Removal of permanganate reducing compounds from methanol carbonylation process stream
US7223883B2 · kind B2 · utility
25Cited by
12References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2004 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | May 30, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improvement of the methanol carbonylation process for manufacturing acetic acid is disclosed. Specifically disclosed is a method for removing permanganate reducing compounds (“PRC's”) from the condensed light ends overhead stream, including (a) distilling at least a portion of the condensed light ends overhead to yield a PRC enriched second overhead stream; (b) extracting the second overhead stream with water and separating therefrom an aqueous stream containing PRC's; and (c) returning at least a portion of the extracted second overhead to the second distiller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.