Plasma based trace metal removal apparatus and method
AssigneeContinental Research & Engineering, LLC
InventorChristopher Herbst
Life of this patent
Estimating the term…
Abstract
A system and method for the removal of metals such as mercury from a gas stream. The method involves contacting a gas stream containing the target metals with reactive chemical species generated in a plasma device. The metal to be removed is chemically converted into forms enabling capture in either conventional particulate removal devices or in a wet scrubber for the capture of a soluble chemical species.
Claims19
A plasma based removal apparatus for the removal of contaminants from a gas stream comprising:
- a non-thermal plasma generation device adapted for installation in a conduit, said plasma device being a first treatment device located in a gas stream without an intervening treatment device disposed in the gas stream between a source of gas and said plasma device, the gas stream containing at least one contaminant;
- a source of electrical power supplying electrical power to said plasma device;
- a source of plasma gas in fluid communication with said plasma device to create an activated species within said plasma device and discharge the activated species into the gas stream, whereby the activated species reacts with the at least one contaminant to form at least one reactant compound;
- and
- a removal device in direct communication with said plasma device for removing the at least one reactant compound from the gas stream.
A plasma based removal apparatus for the removal of contaminants from a gas stream comprising:
- a removal device adapted to be installed in a conduit;
- at least one non-thermal plasma generation device disposed upstream of said removal device;
- a source of electrical power supplying electrical power to said plasma device;
- and
- a source of plasma gas in fluid communication with said plasma device to create an activated species within said plasma device and discharge the activated species into a gas stream containing at least one contaminant, whereby the activated species reacts with the at least one contaminant to form at least one reactant compound for removal by said removal device, and wherein the at least one reactant compound includes at least one of a metal chloride and an oxy-chloride.
A plasma based removal apparatus for the removal of contaminants from a gas stream comprising:
- a plurality of non-thermal plasma generation devices adapted to be installed in a conduit;
- a source of electrical power supplying electrical power to said plasma devices;
- a source of plasma gas in fluid communication with said plasma devices to create an activated species within said plasmas device and discharge the activated species into a gas stream containing at least one contaminant, the activated species reacting with the at least one contaminant to form at least one reactant compound including at least one of a metal chloride and an oxy-chloride;
- and
- a removal device for removing the at least one reactant compound from the gas stream.
Dependencies are inferred from the claim text.