Patents by Inventor Dustin J. Zastrow

Dustin J. Zastrow 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).

  • Biomass pyrolysis reactor with integrated quench and method for converting biomass to liquid bio-oil
    Patent number: 10550330
    Abstract: An apparatus and method are described for high-yield fast pyrolysis of biomass feedstock to produce a liquid bio-oil product. A bubbling fluidized bed reactor is provided having an integrated, rapid quench apparatus for minimizing secondary cracking reactions that can otherwise lower the yield of bio-oil. A quench stream is provided inside the reactor to minimize the residence time that the product vapors spend at high temperature where cracking can occur. The quench stream is introduced downstream of the fluidized bed but still internal to the reactor. The fluidized bed medium is constrained to the bottom of the reactor and is not cooled by the quench stream.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 4, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Paul E. Yelvington, Dustin J. Zastrow, Nicholas R. Schwartz
  • Biomass pyrolysis reactor with integrated quench and method for converting biomass to liquid bio-oil
    Patent number: 10017700
    Abstract: An apparatus and method are described for high-yield fast pyrolysis of biomass feedstock to produce a liquid bio-oil product. A bubbling fluidized bed reactor is provided having an integrated, rapid quench apparatus for minimizing secondary cracking reactions that can otherwise lower the yield of bio-oil. A quench stream is provided inside the reactor to minimize the residence time that the product vapors spend at high temperature where cracking can occur. The quench stream is introduced downstream of the fluidized bed but still internal to the reactor. The fluidized bed medium is constrained to the bottom of the reactor and is not cooled by the quench stream.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: July 10, 2018
    Assignee: Mainstream Engineering Corporation
    Inventors: Paul E. Yelvington, Dustin J. Zastrow, Nicholas R. Schwartz