Butadiene extraction process
US9409837B2 · kind B2 · utility
0Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Mar 2, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/167
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for recovering butadiene from a C4 fraction is disclosed. The process may include: contacting a mixed C4 stream comprising butane, butene, and butadiene, with a solvent comprising an organic solvent and water in a butadiene pre-absorber column to recover an overheads fraction comprising at least a portion of the butane, butene, and water, and a first bottoms fraction comprising the organic solvent, butadiene, and at least a portion of the butene; and feeding the first bottoms fraction to a butadiene extraction unit to recover a butene fraction, a crude butadiene fraction, and a solvent fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.