Patents by Inventor Mark David Kehmna

Mark David Kehmna 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).

  • Method and apparatus to facilitate heating feedwater in a power generation system
    Patent number: 10378763
    Abstract: A power generation system includes a power generation plant portion including a feedwater heating system configured to channel a feedwater stream and a carbon dioxide capture portion coupled in flow communication with the power generation plant portion. The carbon dioxide capture portion includes a solvent circuit configured to channel a solvent stream through at least a portion of the carbon dioxide capture portion. The carbon dioxide capture portion also includes a heat recovery system coupled in flow communication with the solvent circuit and the feedwater heating system. The heat recovery system is configured to transfer heat energy from the solvent stream to the feedwater stream and to channel the heated feedwater from the heat recovery system to the feedwater heating system.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 13, 2019
    Assignee: General Electric Company
    Inventors: Surinder Prabhjot Singh, Dan Hancu, Benjamin Rue Wood, Wei Chen, Dwayne David McDuffie, Mark David Kehmna, Irina Pavlovna Spiry
  • METHOD AND APPARATUS TO FACILITATE HEATING FEEDWATER IN A POWER GENERATION SYSTEM
    Publication number: 20170159932
    Abstract: A power generation system includes a power generation plant portion including a feedwater heating system configured to channel a feedwater stream and a carbon dioxide capture portion coupled in flow communication with the power generation plant portion. The carbon dioxide capture portion includes a solvent circuit configured to channel a solvent stream through at least a portion of the carbon dioxide capture portion. The carbon dioxide capture portion also includes a heat recovery system coupled in flow communication with the solvent circuit and the feedwater heating system. The heat recovery system is configured to transfer heat energy from the solvent stream to the feedwater stream and to channel the heated feedwater from the heat recovery system to the feedwater heating system.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 8, 2017
    Inventors: Surinder Prabhjot Singh, Dan Hancu, Benjamin Rue Wood, Wei Chen, Dwayne David McDuffie, Mark David Kehmna, Irina Pavlovna Spiry
  • Duct fired combined cycle system
    Patent number: 9500103
    Abstract: The present application provides a combined cycle system. The combined cycle system may include a heat recovery steam generator with a first low pressure section and a second low pressure section, a steam turbine with a low pressure steam section in communication with the second low pressure section of the heat recovery steam generator, and a duct burner positioned upstream of the heat recovery steam generator.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: November 22, 2016
    Assignee: General Electric Company
    Inventors: Mark David Kehmna, Seyfettin Can Gulen
  • Duct Fired Combined Cycle System
    Publication number: 20150052906
    Abstract: The present application provides a combined cycle system. The combined cycle system may include a heat recovery steam generator with a first low pressure section and a second low pressure section, a steam turbine with a low pressure steam section in communication with the second low pressure section of the heat recovery steam generator, and a duct burner positioned upstream of the heat recovery steam generator.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 26, 2015
    Applicant: General Electric Company
    Inventors: Mark David Kehmna, Seyfettin Can Gulen