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
Estimating the term…
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 surface onto which has been loaded elemental iodine. Elemental iodine is loaded onto the polyethersulfone surface by immersing the polyethersulfone substrate in an iodine/ethanol solution, then removing the substrate from the iodine/ethanol solution and rinsing in ethanol.
Claims40
An apparatus for removing mercury from a gas stream, the apparatus comprising:
- a polyethersulfone surface;
- and,
- elemental iodine disposed thereon.
A method of removing mercury vapor from a gas stream comprising the steps of:
- providing a polyethersulfone surface;
- loading elemental iodine onto the polyethersulfone surface;
- and,
- contacting the iodine-loaded polyethersulfone 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 substrate having
- elemental iodine disposed on the surface of the substrate.
Dependencies are inferred from the claim text.