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US 8,911,699 B2Granted
Charge-induced selective reduction of nitrogen
AssigneeClearsign Combustion Corporation
InventorsJoseph Colannino, David B. Goodson, Igor A. Krichtafovitch, Roberto Ruiz, Christopher A. Wiklof
Life of this patent
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Abstract
A selective catalytic reduction system (SCR) or selective non-catalytic reduction (SNCR) system include a reagent charging apparatus configured to apply one or more electrical charges to a NOx reducing reagent. The electrical charges enhance mixing of the reagent with fluids carrying NOx and/or enhance reactivity of the reagent with NOx.
Claims60
A selective nitrogen oxide (NOx) reduction system, comprising:
- a reagent charging apparatus configured to apply electrical charges to a selective nitrogen oxide reduction SCR/SNCR reagent;
- a reagent launcher operatively coupled to the reagent charging apparatus and configured to launch the charged reagent into a flue gas produced by a combustion reaction;
- and
- a combustion reaction charging apparatus configured to apply second electrical charges to the combustion reaction.
1 more element
A method for operating a nitrogen oxide (NOx) control system, comprising:
- applying first electrical charges to a selective nitrogen reduction SCR/SNCR reagent;
- injecting the charged reagent into a flue gas from a combustion reaction;
- and
- applying second electrical charges to the combustion reaction;
- wherein the first electrical charges and the second electrical charges are selected to enhance mixing of the reagent with NOx or to enhance reactivity of the reagent with NOx to reduce the NOx to molecular nitrogen (N2).
2 more elements
A selective nitrogen oxide (NOx) reduction system, comprising:
- a reagent charging apparatus configured to apply electrical charges to a selective nitrogen oxide reduction reagent;
- and
- a reagent launcher operatively coupled to the reagent charging apparatus and configured to launch reagent into a flue gas produced by a combustion reaction;
- wherein
- the system lacks catalyst.
2 more elements
Dependencies are inferred from the claim text.