Integrated process for the production of vinyl acetate and/or acetic acid using a fluidized bed
US6180821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Dec 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Acetic acid and/or vinyl acetate are produced by an integrated process in which a gaseous feedstock comprising ethylene and/or ethane and optionally steam is contacted in a first reaction zone (step (a)) with a molecular oxygen-containing gas in the presence of a catalyst active for the oxidation of ethylene to acetic acid and/or ethane to acetic acid and ethylene to produce a first product stream comprising acetic acid, water and ethylene (either as unreacted ethylene and/or as co-produced ethylene) and optionally also ethane, carbon monoxide, carbon dioxide and/or nitrogen. At least a portion of the first gaseous product stream comprising at least acetic acid and ethylene and optionally also one or more of water, ethane, carbon monoxide, carbon dioxide and/or nitrogen is contacted in a second reaction zone (step (b)) in the presence or absence of additional ethylene and/or acetic acid with a molecular oxygen-containing gas in the presence of a catalyst active for the production of vinyl acetate to produce a second product stream comprising vinyl acetate, water, acetic acid and optionally ethylene. The second product stream is separated by distillation (step (c)) into an overhead …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.