Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Animal fibers
Patent
1999-03-12
2000-02-22
Walsh, Donald P.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Animal fibers
162 1, 162 60, 162 72, 162 78, 162151, 209157, 209173, D01B 1000, D01C 300, D21C 902, B03B 566
Patent
active
060276088
ABSTRACT:
A process for converting components of poultry production feather waste into value-added products involves a single counterflow or batch system wash in a polar organic solvent solution. The feather waste can contain loose, picked feathers, and non-feather avian parts. The feather-waste stream is exposed to a concentration gradient of solvent which sanitizes, denatures, dehydrates, and de-oils it. In one aspect, the counterflow contact between solvent solution and feather waste takes place in an inclined screw conveyor. The process produces avian oil and protein from a liquid intermediate stream and dry fiber and protein powder from the converted waste stream. Fiber from this process can be used in fabrics, composites, extrusions and laminates. Oil and protein can be used in biochemical, pharmaceutical, cosmetic, animal feed, and fertilizer products.
REFERENCES:
patent: 3475112 (1969-10-01), Mahall
patent: 3607621 (1971-09-01), Wasko et al.
patent: 4169706 (1979-10-01), Kruchen
patent: 5053082 (1991-10-01), Flanigan
patent: 5705030 (1998-01-01), Gassner et al.
Origin Technology, Inc
Schlak Daniel
Walsh Donald P.
LandOfFree
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