biomass can be an important energy source for a sustainable energy
economy. However, cellulosic biomass tends to be very low density
(bulky), high in moisture, and irregular in size. These negative
features have limited the use of cellulosic biomass in fuel production.
The SGT feed pretreatment process is a form of thermal treatment used as
an initial step in the gasification of cellulosic biomass which results
in a higher density, higher fuel value feedstock. During the process,
the undesirable water contained in the biomass, as well as volatile
chemical components are removed from the biomass and the resulting gases
are utilized in other parts of the bio‐refinery. The basic biomass constituents (cellulose, hemi‐cellulose
and lignin), are partially decomposed in the process making the biomass
much more friable. This significantly reduces the energy required to
grind the biomass to a particle size which is easily handled with proven
solids handling methods. This material also has the benefit of being
more stable for storage than virgin biomass. The final pre-treated
biomass, is a dry, granular material which is an ideal fuel for the SGT
high pressure gasifier.
SGT has optimized and integrated the pre-treatment process into overall bio‐refinery
in a way that actually improves the energy and carbon efficiency of the
overall process, increasing liquid product yields and improving overall
SynGas Technology Pre-treated BiomassThe
high energy density and uniform particle size of the biomass provides
an excellent feedstock for the SynGas Technology gasifier.