Process for direct hydorliquefaction of biomass comprising two stages of ebullating bed hydroconversion
US8623102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 8, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for direct hydroliquefaction of biomass selected from algae, lignocellulosic biomass and/or of one or more constituents of lignocellulosic biomass selected from the group comprising cellulose, hemicellulose and/or lignin for producing fuel bases comprising two successive hydroconversion stages under high hydrogen pressure in ebullating bed reactors. Hydroconversion takes place in the presence of a supported catalyst of the type for hydroconversion of petroleum residue and a suspension composed of the biomass and a solvent, preferably a hydrogen donor solvent and preferably recycled from the process. The biomass can undergo a pretreatment of drying and/or roasting and/or grinding and/or demineralization prior to hydroliquefaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.