Patents Assigned to Apogee Scientific, Inc.
  • Sample conditioning system for removing selenium from a gas stream
    Patent number: 7608230
    Abstract: A sample conditioning system removes selenium from a flue gas sample to provide more accurate measure of mercury in the gas stream. Ammonia or another basic reagent is added to the sampled gas stream to increase the pH of the condensate, and thereby ensuring the removal of hydrogen selenide.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: October 27, 2009
    Assignee: Apogee Scientific, Inc
    Inventors: Scott E. McLaren, Kevin M. Fisher
  • Particulate separation system for mercury analysis
    Patent number: 6736883
    Abstract: A particulate separation system for accurate measurement of vapor-phase mercury in a flue gas stream uses an inertial gas sampling filter in which the skin temperature of the filter element is controlled to allow vapor-phase mercury measurements while minimizing measurement artifacts caused by: (1) mercury thermally desorbing off particulates into the gas stream; and (2) mercury being removed from the vapor phase by collection on particulate matter at the gas/particle separation interface.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: May 18, 2004
    Assignee: Apogee Scientific, Inc.
    Inventors: Sharon Sjostrom, Timothy Ebner, Richard Slye