Method for preparing 1-butene and propylene
US11905238B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2021 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 16, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/163
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a method for preparing 1-butene and propylene including: supplying a C4 mixture stream to a first hydrogenation reactor to convert 1,3-butadiene into 1-butene; supplying a discharge stream from the first hydrogenation reactor to a first distillation column, supplying a lower discharge stream from the first distillation column including 2-butene and n-butane to a metathesis reactor, and supplying an upper discharge stream from the first distillation column including 1-butene and i-butane to a second distillation column; recovering an upper discharge stream the second distillation column including i-butane and recovering 1-butene from a lower discharge stream from the second distillation column; and producing propylene in the metathesis reactor, supplying a discharge stream from the metathesis reactor to a purification unit to recover propylene, and recycling an unreacted material to the metathesis reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.