Biomass Processing

摘要

A biomass processing system produces a refined bio oil. The system includes a first auger carrying the biomass through a torrefaction/drying chamber to dry the biomass and a second auger carries biomass feed material though the torrefaction/drying chamber to produce vapor phase bio oil. The vapor phase bio oil is collected carried from the torrefaction/drying chamber to condensers and quenched by a water spray before release into the condensers. The water spray also serving as a solvent to reduce pH in the liquid phase raw bio oil. The raw bio oil is carried to a conditioning system where the raw bio oil resides in a separation tank where the water separates and is removed producing refined bio oil. Ethanol may be mixed with the refined bio oil to produce fuel oil or petroleum asphalt may be mixed with the refined bio to obtain a substitute for road asphalt.

主权项

1. A method for producing road asphalt, the method comprising:
feeding biomass into a two pass torrefaction/drying chamber; drying the biomass to create dry biomass; heating the dry biomass to create vapor phase bio oil; carrying the vapor phase bio oil to a condenser; condensing the bio oil vapor into liquid phase raw bio oil in the condenser; separating water from the raw bio oil in a separator to produce refined bio oil; and processing the refined bio oil into a road asphalt.