Process for the preparation of acrylic acid comprising a partial oxidation of propane to propylene
US7732639B2 · kind B2 · utility
0Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jul 9, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for preparing acrylic acid by oxidizing propylene and then acrolein, involving the recycling of gases that had not reacted by means of a partial oxidation of the propane, in parallel, at the end of the acrylic acid recovery step, then returning, to the propylene-converting reactor, a gas rich in both propane and propylene having been subjected to a second passage in the acrylic acid recovery column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.