Process for dry fractionation of lignocellulosic biomass
US9879287B2 · kind B2 · utility
0Cited by
1References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 24, 2014 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Feb 24, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The process for the dry fractionation of lignocellulosic biomass of at least 50% by weight of lignins, cellulose and hemicelluloses. The biomass is fragmented to obtain an ultrafine powder. The process includes at least one step of separating a fraction enriched with cellulose and a fraction enriched with lignin, hemicelluloses and minerals by electrostatic sorting of the ultrafine particles. Preferably, the fraction separation step includes a step of triboelectrostatic charging of ultrafine particles and at least one step of deviating a path in the electric field of the charged particles to sort the particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.