Back to results
US 9,427,702 B2Granted
Electric reagent launcher for reduction of nitrogen
AssigneeClearsign Combustion Corporation
InventorsJoseph Colannino, David B. Goodson, Igor A. Krichtafovitch, Roberto Ruiz, Christopher A. Wiklof
Life of this patent
Estimating the term…
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.
Claims72
A selective nitrogen oxide (NOx) reduction system for a combustion reaction device, the system comprising:
- a reagent charging apparatus configured to apply electrical charges to a selective nitrogen oxide reduction reagent, the reagent further comprising a SCR/SNCR reagent;
- and
- a reagent launcher configured to launch the charged reagent into a flue gas produced by a combustion reaction;
- the reagent launcher further comprising:
- a body defining a chamber, a launch orifice configured to eject reagent, and a reagent delivery passage configured to deliver the reagent or fluid carrying the reagent from a reagent source to the chamber;
- and
- at least one electrode, distinct from the body defining the chamber, disposed at least partially within the chamber, within the launch orifice or within the delivery passage;
- wherein the at least one electrode is operatively coupled to the reagent charging apparatus.
5 more elements
A method for operating a nitrogen oxide (NOx) control system for combustion, comprising:
- delivering a reagent through a delivery passage to a chamber inside a body, the reagent further comprising a selective nitrogen reduction SCR/SNCR reagent;
- applying first electrical charges to the reagent by applying the first electrical charges to at least one electrode, the electrode being distinct from the body defining the chamber and being disposed at least partially within the chamber, within a launch orifice of the chamber or within the delivery passage;
- and
- injecting the charged reagent, via the launch orifice of the chamber, into a flue gas resulting from a combustion reaction;
- wherein the first 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
Dependencies are inferred from the claim text.