9700 Elmira Circle
Sacramento, CA 96827-1120
Tele/Fax: 916-363-9705
Email: ROBSACROB@cs.com
BIOREFINERY FEEDSTOCK
Introduction:
Three steps are required to make synthesis gas, a
mixture of hydrogen and carbon monoxide from biomass. They are drying at 150°C.,
pyrolysis at 150°C - 700°C. and steam reformation at
800°C - 1100°C. The drying and pyrolysis can be performed in a much smaller size
unit which can be trailer-mounted. The bio-char can be slurried
in the bio-oil and transported to the Biorefinery
much as crude oil is transported to a petroleum refinery. Biomass typically has
20% moisture and pyrolysis creates about 30% char, 30% oil and 30% combustible
gas. The gas would be used as fuel for the drying and pyrolysis. A mobile
dryer/pyrolyzer would have a capacity of 10 wet tons per hour
. Thus, the slurry would reduce the volume of the biomass by about 50%.
Agricultural Residue Collection Site:
At an agricultural collection site, lignocellulosic residues from agricultural wastes are pyrolyzed to pyrolysis oil for transfer by tank truck to a biorefinery. Cereal straws with high silica content would coat
the refractories of an incinerator with slag and are
best suited to pyrolysis.
Forest Residue Collection
Slash can be comminuted, dried and pyrolyzed
to pyrolysis oil for transport to a biorefinery.
Proposed Waste Facility:
1. A burn site or landfill for agricultural residues
or forest slash would create a bio-char/bio-oil slurry
for transport to a biorefinery.
2.The biorefinery would
steam reform the slurry to synthesis gas for an integrated gasifier combined
cycle power pland or for catalytic synthesis of
ethanol or gasoline.
3. The year-around availability of forest slash would compensate for the seasonality of agricultural wastes.