Patents by Inventor Dominic J. Zelnik

Dominic J. Zelnik 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: 8877044
    Abstract: Methods for preparing solvent-dry, stackable tailings. The method can include the steps of adding a first quantity of first solvent to a bitumen material to form a first mixture, separating a first quantity of bitumen-enriched solvent from the first mixture and thereby creating first solvent-wet tailings, adding a quantity of second solvent to first solvent-wet tailings to separate a first quantity of first solvent component from the first solvent-wet tailings and thereby producing second solvent-wet tailings, and adding a quantity of water to the second solvent-wet tailings to separate a first quantity of second solvent component from the second solvent-wet tailings and thereby forming solvent-dry, stackable tailings.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 4, 2014
    Assignee: Shell Canada Energy Cheveron Canada Limited
    Inventors: Willem P. C. Duyvesteyn, Mahendra Joshi, Julian Kift, Dominic J. Zelnik, Whip C. Thompson, Cherish M. Hoffman
  • Publication number: 20130341245
    Abstract: A hydrocarbon upgrading method is described. The method can generally include a step of providing a nozzle reactor, a step of injecting hydrocarbon residuum into the feed passage of the nozzle reactor, and a step of injecting a cracking material into the main passage of the nozzle reactor, and a step of collecting a product stream exiting the exit opening of the main passage of the nozzle reactor. The hydrocarbon residuum used in the method can be obtained from a hydroconversion-type upgrader, such as an ebullating bed hydrocracker.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: MARATHON OIL CANADA CORPORATION
    Inventors: Jose Armando Salazar-Guillen, Mahendra Joshi, Dominic J. Zelnik
  • Publication number: 20130251597
    Abstract: A nozzle reactor includes a passage having one or more regions with a converging-diverging shape. The nozzle reactor accelerates a reacting fluid to supersonic velocities and mixes it with a feed material. The reacting fluid and the feed material may be pre-heated. The high speed collision between the reacting fluid and the feed material at elevated temperatures causes the materials to react.
    Type: Application
    Filed: February 7, 2013
    Publication date: September 26, 2013
    Applicant: MARATHON CANADIAN OIL SANDS HOLDING LIMITED
    Inventors: Jose Armando Salazar, Mahendra Joshi, Christopher Daniel Ard, Dominic J. Zelnik
  • Publication number: 20130092599
    Abstract: Methods and systems of upgrading hydrocarbon material, such as bituminous material, are described. The methods and systems can reduce or eliminate the need for the use of atmospheric and/or vacuum distillation towers by instead using clyconic separation apparatus. The methods and systems can include the use of one or more cyclonic separation apparatus aligned in series in order to separate out a high boiling point fraction of the hydrocarbon material and then upgrading the high boiling point hydrocarbon material in a nozzle reactor.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 18, 2013
    Applicant: MARATHON OIL CANADA CORPORATION
    Inventors: Jose Armando Salazar, Mahendra Joshi, Dominic J. Zelnik
  • Publication number: 20130026077
    Abstract: A bitumen extraction method can include the use of a two or more mixing drums aligned in series for spraying solvent over bituminous material and/or tailings loaded in the mixing drums while the mixing drums rotate. Such mixing can result in the dissolution of bitumen into the solvent, which then allows for the separation of a “dilbit” stream from the bituminous material.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 31, 2013
    Applicant: MARATHON OIL CANADA CORPORATION
    Inventors: Mahendra Joshi, Julian Kift, Cherish M. Hoffman, Whip C. Thompson, Dominic J. Zelnik
  • Publication number: 20130026078
    Abstract: Methods for preparing solvent-dry, stackable tailings. The method can include the steps of adding a first quantity of solvent to a bitumen material to form a first mixture, separating a first quantity of bitumen-enriched solvent from the first mixture and thereby creating solvent-wet tailings, and adding a quantity of water to the solvent-wet tailings to separate a solvent component from the solvent-wet tailings and thereby forming solvent-dry, stackable tailings. The solvent used in the methods can include paraffinic solvent, such as pentane.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 31, 2013
    Applicant: MARATHON OIL CANADA CORPORATION
    Inventors: Mahendra Joshi, Julian Kift, Cherish M. Hoffman, Whip C. Thompson, Dominic J. Zelnik
  • Publication number: 20120152809
    Abstract: Methods and system for extracting bitumen can include the use of a mixing drum for spraying solvent over bituminous material to help dissolve bitumen and create a bitumen-laden solvent phase that can be separated from the non-bituminous components of the bituminous material. The mixing drum can be rotating during the spraying step to help promote dissolution of bitumen. The mixing drum can also include an internal screen for separating bitumen-laden solvent from the non-bituminous material. In some embodiments, two or more mixing drums are used in series, with the non-bituminous material from the first mixing drum being sprayed with additional solvent in the second mixing drum and bitumen laden solvent from the second mixing drum being used as the solvent sprayed over bituminous material in the first mixing drum. Hydrocyclones can also be incorporated in the in system and methods for increased extraction efficiency.
    Type: Application
    Filed: November 29, 2011
    Publication date: June 21, 2012
    Applicant: MARATHON OIL CANADA CORPORATION
    Inventors: Julian Kift, Mahendra Joshi, Cherish M. Hoffman, Whip C. Thompson, Dominic J. Zelnik
  • Publication number: 20110180459
    Abstract: Methods for preparing solvent-dry, stackable tailings. The method can include the steps of adding a first quantity of first solvent to a bitumen material to form a first mixture, separating a first quantity of bitumen-enriched solvent from the first mixture and thereby creating first solvent-wet tailings, adding a quantity of second solvent to first solvent-wet tailings to separate a first quantity of first solvent component from the first solvent-wet tailings and thereby producing second solvent-wet tailings, and adding a quantity of water to the second solvent-wet tailings to separate a first quantity of second solvent component from the second solvent-wet tailings and thereby forming solvent-dry, stackable tailings.
    Type: Application
    Filed: November 30, 2010
    Publication date: July 28, 2011
    Applicant: MARATHON OIL CANADA CORPORATION
    Inventors: Willem P.C. Duyvesteyn, Mahendra Joshi, Julian Kift, Dominic J. Zelnik, Whip C. Thompson, Cherish M. Hoffman