Patents by Inventor Rattan K. Tawney

Rattan K. Tawney 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 for refueling existing natural gas combined cycle plant as a non-integrated gasification combined cycle plant
    Patent number: 8118895
    Abstract: A process of generating power utilizing a low level heat from a raw syngas produced in a quench gasifier is disclosed. The process includes a first stage that includes: producing raw syngas at the quench gasifier, making 150 psi saturated steam from the produced raw syngas, superheating the saturated steam, and using the superheated saturated steam in a low pressure steam turbine to generate power. The process includes a second stage that includes: providing the raw syngas and a process condensate stream to a thermal fluid vaporizer to vaporize an organic thermal fluid, and using the vaporized organic thermal fluid in an expander turbine to generate power via an organic Rankine cycle.
    Type: Grant
    Filed: March 29, 2008
    Date of Patent: February 21, 2012
    Assignee: Bechtel Power Corporation
    Inventors: Harvey Wen, Rattan K. Tawney