Patents by Inventor Joseph Monroe RAWLS

Joseph Monroe RAWLS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8877012
    Abstract: An apparatus, for the steam explosion treatment of biomass, having a pressurized reactor vessel to receive a biomass material and steam, discharge lines connecting the pressurized reactor vessel to the separation device, the lines sized and positioned to allow for the steam explosion of biomass material. At the outlet end of the discharge lines is a collection-expansion manifold to connect the outlet end of each of the discharge lines to a collection line, wherein the collection line provides a passage for biomass material and steam flowing from the discharge lines. The collection line passage has a substantially larger cross-sectional area than the cross-sectional area of a single discharge line. The collection line is coupled to a separation device such that the separation device receives the biomass material and steam from the collection line.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: November 4, 2014
    Assignee: Andritz Inc.
    Inventors: Joseph Monroe Rawls, Thomas Pschorn, Bertil Stromberg, Patrick Pepin
  • Publication number: 20140110509
    Abstract: An apparatus, for the steam explosion treatment of biomass, having a pressurized reactor vessel to receive a biomass material and steam, discharge lines connecting the pressurized reactor vessel to the separation device, the lines sized and positioned to allow for the steam explosion of biomass material. At the outlet end of the discharge lines is a collection-expansion manifold to connect the outlet end of each of the discharge lines to a collection line, wherein the collection line provides a passage for biomass material and steam flowing from the discharge lines. The collection line passage has a substantially larger cross-sectional area than the cross-sectional area of a single discharge line. The collection line is coupled to a separation device such that the separation device receives the biomass material and steam from the collection line.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 24, 2014
    Applicant: Andritz Inc.
    Inventors: Joseph Monroe RAWLS, Thomas PSCHORN, Bertil STROMBERG, Patrick PEPIN
  • Publication number: 20140110069
    Abstract: An apparatus, for the steam explosion treatment of biomass, having a pressurized reactor vessel to receive a biomass material and steam, discharge lines connecting the pressurized reactor vessel to the separation device, the lines sized and positioned to allow for the steam explosion of biomass material. At the outlet end of the discharge lines is a collection-expansion manifold to connect the outlet end of each of the discharge lines to a collection line, wherein the collection line provides a passage for biomass material and steam flowing from the discharge lines. The collection line passage has a substantially larger cross-sectional area than the cross-sectional area of a single discharge line. The collection line is coupled to a separation device such that the separation device receives the biomass material and steam from the collection line.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 24, 2014
    Applicant: Andritz Inc.
    Inventors: Joseph Monroe RAWLS, Thomas PSCHORN, Bertil STROMBERG, Patrick PEPIN
  • Patent number: 8628623
    Abstract: A reactor for the treatment of lignocellulosic material and related methods. The reactor includes a vessel having an upper portion and a lower portion. A pressure envelope is formed between an outer wall of the vessel and at least one lower wall of the lower portion of the vessel, and the upper portion of the vessel and the pressure envelope are operatively connected with a pressurization line, such that a pressure of the pressure envelope and a pressure of the upper portion may be equalized.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: January 14, 2014
    Assignee: Andritz Technology and Asset Management GmbH
    Inventors: John Bolles, Joseph Monroe Rawls, Bertil Stromberg
  • Publication number: 20130232863
    Abstract: Systems and methods for producing torrefied lignocellulosic material in a commercially suitable process.
    Type: Application
    Filed: April 25, 2013
    Publication date: September 12, 2013
    Applicant: ANDRITZ TECHNOLOGY AND ASSET MANAGEMENT GMBH
    Inventors: Bertil STROMBERG, Joseph Monroe RAWLS
  • Patent number: 8449724
    Abstract: Systems and methods for producing torrefied lignocellulosic material in a commercially suitable process.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: May 28, 2013
    Assignee: Andritz Technology and Asset Management GmbH
    Inventors: Bertil Stromberg, Joseph Monroe Rawls
  • Publication number: 20130105295
    Abstract: A pressurized torrefaction reactor vessel including: a rotatable shaft extending vertically down from a top of the vessel; scraper devices each at a different elevation within the vessel and mounted to the shaft; a tray associated with each one of the scraper devices such that the scraper device is immediately above a tray of the tray assembly; wherein the tray is an open mesh and impermeable to passage of biomass through the tray; each tray includes a discharge opening to transfer biomass from the tray and down to a tray of a lower one of the tray assemblies, and wherein the discharge opening in the lowermost tray assembly transfers the biomass to a pile of the biomass in the vessel, and a bottom discharge port of the vessel through which the torrefied biomass is discharged.
    Type: Application
    Filed: June 28, 2012
    Publication date: May 2, 2013
    Applicant: ANDRITZ INC.
    Inventors: Andrew EYER, Bertil STROMBERG, Joseph Monroe RAWLS, Brian F. GREENWOOD, John WESTON, Michael SESTRICH, Nachiketa NANDY, John BOLLES, Jay MIELE
  • Publication number: 20130098751
    Abstract: A method for torrefaction of lignocellulosic biomass comprising: continuously feeding the biomass to an upper inlet to the torrefaction reactor vessel such that the biomass material is deposited on an upper tray assembly of tray assemblies stacked vertically within the reactor; as the biomass moves over each tray assembly, heating and drying the biomass material with a non-oxidizing gas under a pressure of at least 3 bar gauge and at a temperature of at least 200° C.; cascading the biomass down through the trays by passing the biomass through an opening in each of the trays to deposit the biomass on the tray of the next lower tray assembly; discharging torrefied biomass from a lower outlet of the torrefaction reactor, and circulating gas extracted from the reactor vessel back to the reactor.
    Type: Application
    Filed: June 28, 2012
    Publication date: April 25, 2013
    Applicant: ANDRITZ INC.
    Inventors: Andrew EYER, Bertil STROMBERG, Joseph Monroe RAWLS, Brian F. GREENWOOD
  • Publication number: 20110180061
    Abstract: A reactor for the treatment of lignocellulosic material and related methods. The reactor includes a vessel having an upper portion and a lower portion. A pressure envelope is formed between an outer wall of the vessel and at least one lower wall of the lower portion of the vessel, and the upper portion of the vessel and the pressure envelope are operatively connected with a pressurization line, such that a pressure of the pressure envelope and a pressure of the upper portion may be equalized.
    Type: Application
    Filed: December 20, 2010
    Publication date: July 28, 2011
    Applicant: ANDRITZ TECHNOLOGY AND ASSET MANAGEMENT GmbH
    Inventors: John BOLLES, Joseph Monroe RAWLS, Bertil STROMBERG
  • Publication number: 20110041392
    Abstract: Systems and methods for producing torrefied lignocellulosic material in a commercially suitable process.
    Type: Application
    Filed: July 8, 2010
    Publication date: February 24, 2011
    Inventors: Bertil STROMBERG, Joseph Monroe RAWLS