Manufacture of butadiene from ethylene
US9505682B2 · kind B2 · utility
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15References
12Claims
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Key dates
| Filing date | Jul 7, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jan 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of producing butadiene includes: (1) dimerizing ethylene to butene followed by (2) oxidatively dehydrogenating the butene to butadiene and (3) recovering the butadiene by (i) absorbing the product with a hydrocarbon absorber oil and (ii) stripping a crude product stream from the absorber oil. The absorber oil is selected so as to be effective to sequester ethylene dimerization-derived impurities from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.