Screens Or Washers Patents (Class 127/25)
  • Patent number: 8715419
    Abstract: A method to process cellulosic material in a treatment vessel including: introducing the cellulosic material to a processing chamber of the vessel; adding heat energy or pressure to the vessel to hydrolyze the cellulosic material in the processing chamber and dissolve hemi-cellulosic from the cellulosic material; compressing the cellulosic material in the processing chamber; extracting the dissolved hemi-cellulosic material through a screen from the processing section; draining the extracted hemi-cellulosic material from the vessel; and discharging the cellulosic material from the vessel separately from the extracted hemi-cellulosic material.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: May 6, 2014
    Assignee: Andritz Inc.
    Inventors: Peter Mraz, Thomas Pschorn, Bertil Stromberg, Namhee Shin
  • Patent number: 8353989
    Abstract: A biomass cooking device including: a treatment vessel having an biomass inlet adapted to receive biomass material to a processing chamber of the vessel, a biomass outlet adapted to discharge from the processing chamber the biomass material processed in the vessel, an extraction region of the vessel and a liquids outlet to the extraction region to discharge dissolved hemi-cellulosic material extracted from the biomass material in the processing chamber; a piston press in the cooking vessel defining a moveable wall of the processing chamber, wherein the piston press moves to reduce the processing chamber and thereby compress the biomass material; and a screen plate in the vessel forming a barrier between the processing chamber and an extraction region of the vessel, the screen plate having apertures to pass the dissolved hemi-cellulosic material through the screen plate from the processing chamber to the extraction region.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: January 15, 2013
    Assignee: Andritz Inc.
    Inventors: Peter Mraz, Thomas Pschorn, Bertil Stromberg, NamHee Shin
  • Patent number: 7815876
    Abstract: The reactor pump for hydrolytic splitting of cellulose is configured to pump cellulose, under high pressure, with low availability of sugar into a reactor. The reactor has an upstream transition segment connected to a downstream reaction chamber. The transition segment has an inlet that is smaller than the outlet. The inner walls taper outward. The chamber has an inlet that is larger than the discharge outlet. The inner walls taper inward. The transition segment outlet has an area that is substantially the same as the area of the chamber inlet. Back pressure in the chamber forms a cellulose plug within the inlet of the transition segment. The plug stops cellulose from escaping out the inlet. High pressure pumping forms a cellulose plug within the discharge outlet of the chamber. The plug slows downstream movement of the cooking cellulose giving the cellulose time to cook. Cooking cellulose begins to breakdown under heat and the injection of acid, if required.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 19, 2010
    Inventor: David A. Olson
  • Patent number: 7815741
    Abstract: A reactor for hydrolytic splitting of cellulose under high pressure and heat has an inlet and outlet each with a cross-sectional area smaller than the cross-sectional area of the reactor. The pressure and heat in the reactor forms a cellulose plug within the inlet and the outlet. The inlet plug stops cellulose from escaping out the inlet. Cellulose begins to breakdown under heat, pressure, and if required an acid or a lubricant. The outlet plug slows downstream movement of cooking cellulose. Cellulose may be pre-treated by the addition of water, a weak acid, a lubricant, or a combination of the foregoing. The outer surface of the plug cooks faster than the inner core of the plug, becomes a liquefied slurry, and slides faster towards the outlet than the inner core.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: October 19, 2010
    Inventor: David A. Olson
  • Patent number: 7481890
    Abstract: Method and apparatus for processing corn into one or more corn products including dextrose. In a preferred process, corn is processed and treated with solvent(s) to extract oil. The oil can be subsequently recovered using membrane technology. Zein may also be produced if the solvent is an alcohol. Starch in the deoiled meal is converted to dextrose by liquefaction and saccharification with enzymes. The reaction mixture containing the dextrose and other components is subjected to one or more unit operations such as screening, filtration, and/or membrane technology to produce one or more of corn gluten, soluble protein, dextrose, and fiber.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: January 27, 2009
    Assignee: The Board of Trustees of the University of Illinois
    Inventor: Munir Cheryan
  • Patent number: 4283232
    Abstract: In apparatus comprising a plurality of hydrocyclone stages connected in cascade as a totally enclosed system, for use in the upgrading of starch or other particulate feedstock, there is provision for recycling part of the underflow stream from the final hydrocyclone stage to the preceding stage.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: August 11, 1981
    Assignee: Wessanen Nederland B.V.
    Inventor: Ijsbrand Best
  • Patent number: 4207118
    Abstract: A starch wet milling process, in which a series of independent classifications and separations is carried out in the production of starch, employs a Starch Gluten Separation Station having a three-stage centrifugation treatment including passing the entire mill stream through a mill stream centrifuge thickener, followed by primary starch centrifuge separation and gluten centrifuge thickening.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: June 10, 1980
    Assignee: Dorr-Oliver Incorporated
    Inventors: Laszlo Bonnyay, James C. Elsken
  • Patent number: 3981738
    Abstract: Device for gluten washing including a cylinder of increasing diameter having protruding helical flights. The cylinder presents an outward surface of peaked, elbow-shaped ridges. The cylinder and its helical wings are encompassed by a cylindrical, screen stator and the whole set at an angle above the horizontal in an enclosing tank. The bottom end of the stator is partially open to communicate with a feed hopper while the upper end, along with the cylinder, is subject to spray nozzles. A recirculation system conducts liquid from the bottom to the top of the tank.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: September 21, 1976
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Ganta Venkateswara Rao, Dale Albert Garinger, Floyd Kent Shoup
  • Patent number: 3980493
    Abstract: Apparatus for separating and recovering starch and gluten from wheat flour dough. It includes a known trough-like vessel having a semicircular, at least partly perforated bottom, dough treatment members mounted on a rotatable shaft extending longitudinally within the vessel, means for adding wash liquid to the vessel, means for withdrawing this wash liquid together with extracted starch via the perforations, means for introducing dough at one end of the vessel and means for discharging gluten at the opposite end. The treatment members are in the form of rotatable radial blades having angularly inclined faces adapted to lift and advance the dough along the vessel while substantially avoiding pressing the dough against the perforated bottom. The blades also have sharpened leading edges adapted to co-operate with fixed cutter bars extending transversely across the vessel.
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: September 14, 1976
    Assignee: The Ogilvie Flour Mills Company, Limited
    Inventors: Gerald J. Dunne, Thomas Walter Roberts