Process for the thermal conversion of biomass to liquids
US5605551A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1995 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Jul 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/145
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high conversion of biomass, such as wood, sawdust, bark, or agricultural wastes, to liquids is obtained bypyrolysis at short reaction tines in a reactor capable of high heat transfer rates; the reactor being of the fluidized bed, circulating fluidized bed or transport type in which the conveying gas contains low and carefully controlled amounts of oxygen, allowing a reaction system with low concentrations of carbon monoxide or flammable gases with a resulting improvement in operating safety and potential improvement in thermal efficiency and capital costs. The oxidation steps may be carried out in one or two stages. The resulting liquid product may be used as an alternative liquid fuel or as a source of high-value chemicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.