Apparatus and methods for removing mercury from fluid streams
AssigneeCooper Environmental Services LLC
InventorsJohn Arthur Cooper, Sarah Catherine Fry, Bruce Edward Johnsen
Life of this patent
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Abstract
An apparatus and method for removing mercury, and in particular elemental mercury, from a fluid stream by exposing the fluid stream to a polyethersulfone or filter-coated with anion exchange resin, or anion exchange resin-coated surface onto which has been loaded elemental iodine. Elemental iodine is loaded onto the PES or anion exchange resin-coated surface by immersing the PES or anion exchange resin-coated substrate in an iodine/pentane solution, then removing the substrate from the iodine/pentane solution and rinsing in pentane.
Claims40
An apparatus for removing mercury from a gas stream, the apparatus comprising:
- a polyethersulfone surface or a surface coated with an anion exchange resin;
- and,
- elemental iodine disposed thereon.
A method of removing mercury vapor from a gas stream comprising the steps of:
- providing a polyethersulfone or resin-coated surface;
- loading elemental iodine onto the polyethersulfone or resin-coated surface;
- and,
- contacting the iodine-loaded polyethersulfone or resin-coated surface with a gas stream containing vapor-phase mercury.
A method of analyzing mercury in a gas stream comprising the steps of:
- providing a mercury containing gas stream;
- extracting a portion of the gas stream;
- passing the extracted portion through a filter train, the filter train comprising a first filter for extracting particulate oxidized mercury, a second filter for extracting oxidized vapor phase mercury, and a third filter for extracting elemental vapor phase mercury;
- and,
- the third filter comprising a gas permeable polyethersulfone or Anion exchange resin-coated substrate having elemental iodine disposed on the surface of the substrate.
Dependencies are inferred from the claim text.