This invention pertains to a bio-
mass processing system, and method of
processing waste bio-
mass, wherein one or more mixers mixes a
bed of bio-
mass material such as
manure at substantially any and all locations in a defined length and width portion of the
bed, in a dryer. Heated air percolates upwardly through the
bed. Separation apparatus separates a relatively dryer fraction of the bio-mass material from the dryer. The separated finished product from the dryer is optionally fed to a boiler where the dried bio-mass material is burned.
Heat of combustion from the boiler is used as dryer heat for
drying the bio-mass feed material in the dryer.
Excess heat is optionally used to produce steam, which powers a
turbine, which powers an electrical generator. Residual ash from the
combustion process comprises about 2% by weight of the solids content of e.g. a feed
stream coming into the dryer.