Presses – With drain means for expressed liquid – Drainage through or along surface spanning pressure surfaces
Patent
1984-10-12
1986-12-23
Feldman, Peter
Presses
With drain means for expressed liquid
Drainage through or along surface spanning pressure surfaces
100116, 100218, 100295, B30B 906
Patent
active
046305351
ABSTRACT:
A method and apparatus for more effectively squeezing moisture from wood chips and/or other "green" biomass materials. A press comprising a generally closed chamber having a laterally movable base at the lower end thereof, and a piston or ram conforming in shape to the cross-section of the chamber is adapted to periodically receive a charge of biomass material to be dehydrated. The ram is forced against the biomass material with suffcient force to compress the biomass and to crush the matrix in which moisture is contained within the material with the face of the ram being configured to cause a preferential flow of moisture from the center of the mass outwardly to the grooved walls of the chamber. Thus, the moisture is effectively squeezed from the biomass and flows through the grooves formed in the walls of the chamber to a collecting receptacle and is not drawn back into the mass by capillary action when the force is removed from the ram.
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Feldman Peter
Haugen Orrin M.
Niebuhr Frederick W.
Nikolai Thomas J.
Regents of the University of Minnesota
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