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Title: Method and apparatus for de-watering biomass materials in a compression drying process

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.

Inventors:
 [1]
  1. Roseville, MN
Issue Date:
Research Org.:
University of Minnesota
OSTI Identifier:
866084
Patent Number(s):
4630535
Assignee:
Regents of University of Minnesota (Minneapolis, MN)
DOE Contract Number:  
AS07-83ID12349
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; de-watering; biomass; materials; compression; drying; process; effectively; squeezing; moisture; wood; chips; green; press; comprising; closed; chamber; laterally; movable; base; piston; conforming; shape; cross-section; adapted; periodically; receive; charge; material; dehydrated; forced; suffcient; force; compress; crush; matrix; contained; configured; preferential; flow; center; mass; outwardly; grooved; walls; squeezed; flows; grooves; formed; collecting; receptacle; drawn; capillary; action; removed; biomass materials; closed chamber; capillary action; biomass material; wood chips; drying process; grooves formed; periodically receive; /100/

Citation Formats

Haygreen, John G. Method and apparatus for de-watering biomass materials in a compression drying process. United States: N. p., 1986. Web.
Haygreen, John G. Method and apparatus for de-watering biomass materials in a compression drying process. United States.
Haygreen, John G. Wed . "Method and apparatus for de-watering biomass materials in a compression drying process". United States. https://www.osti.gov/servlets/purl/866084.
@article{osti_866084,
title = {Method and apparatus for de-watering biomass materials in a compression drying process},
author = {Haygreen, John G},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

Patent:

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