Method for the production of butadiene from ethanol in one low-water- and low-energy-consumption reaction step
US9950969B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2521/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a process for the production of butadiene from an ethanol feed comprising at least 80% by weight of ethanol, comprising a step for conversion of ethanol to acetaldehyde, a step for the extraction of butadiene, a step for scrubbing gaseous by-products with water, a step for eliminating impurities and brown oils, a step for treating effluents, a first butadiene purification step, and a subsequent butadiene purification step, said ethanol feed being supplied to said butadiene extraction step, the arrangement of the steps and recycles allowing the recycles to be maximized and allowing the water and energy consumption to be minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.