Methods and apparatuses for forming low-metal biomass-derived pyrolysis oil
US8940060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2011 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods and apparatuses for forming a low-metal biomass-derived pyrolysis oil are provided. In an embodiment, a method for forming a low-metal biomass-derived pyrolysis oil includes washing biomass comprising a water-soluble metal component therein with wash water that is substantially free of water-soluble metals. The washed biomass and water containing water-soluble metal are separated after washing the biomass. The washed biomass is pyrolyzed in a pyrolysis process to form a pyrolysis vapor stream. A portion of the pyrolysis vapor stream is condensed to form a condensate. The wash water is derived from the washed biomass. In an embodiment of an apparatus, the apparatus comprises a washing stage, a biomass dryer, a pyrolysis reactor, a quenching system comprising a primary condenser and a secondary condenser, and a return line that connects the quenching system to the washing stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.