Patents by Inventor Robert M. Henningsgaard

Robert M. Henningsgaard 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 for removing mercury from a gas stream and apparatus for same
    Patent number: 5827352
    Abstract: A method for removing mercury from a gas stream. In the method, sorbent is injected into the gas stream. Water is dispersed into the gas stream to create a cooled gas stream. The cooled gas stream is allowed to dwell with the sorbent in a chamber to remove mercury from the cooled gas stream. The cooled gas stream is passed through an electrostatic precipitator located above the chamber which collects water and recycles the collected water back into the chamber for cooling the gas stream in the chamber. An apparatus for removing mercury from a gas stream is also provided.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: October 27, 1998
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Ralph F. Altman, Ramsay Chang, Robert M. Henningsgaard, Ronald W. Elsner