Selective noncatalytic reduction definition

Selective noncatalytic reduction means a noncombustion control technology that destroys NOx by injecting a reducing agent (e.g., ammonia, urea, or cyanuric acid) into the flue gas, downstream of the combustion zone that converts NOx to molecular nitrogen, water, and when urea or cyanuric acid is used, to carbon dioxide.

Selective noncatalytic reduction or “SNCR” means a noncombustion technology that reduces NOx emissions without a catalyst by injecting a reducing agent (such as ammonia, urea or cyanuric acid) into the flue gas, downstream of the combustion zone; the injection of the reducing agent converts NOx to molecular nitrogen, water, and (if the reducing agent is urea or cyanuric acid) carbon dioxide (CO2).

Selective noncatalytic reduction means a noncombustion control

Examples of Selective noncatalytic reduction in a sentence

• SCR has been demonstrated to be able to achieve NOx emission limits of 2.0 ppm.18 Selective non-catalytic reduction (SNCR): Selective non-catalytic reduction involves injection of ammonia or urea with proprietary conditioners into the exhaust gas stream without a catalyst.

• Selective non-catalytic reduction (SNCR) requires a temperature window that is higher than the exhaust temperatures from utility gas turbine installations.

• Selective non-catalytic reduction (SNCR) involves the direct injection of ammonia or urea at high flue gas temperatures.

• Selective non-catalytic reduction (SNCR) is the only other post combustion control technology available for controlling NOX and is generally considered to be less effective.

• Selective non-catalytic reduction (SNCR) is a post-combustion control technology that reduces NOx emissions by injection of ammonia or urea into the flue gas in the furnace.

• Selective noncatalytic reduction technologies use a reducing agent to reduce the nitrogen oxides to nitrogen and water (EIIP, 1995a; EIIP, 1995b).

• Potential NOX control technologies for combustion gas turbines include the following:• Combustion controls− Dry combustion controls− Dry low-NOX combustor design− Catalytic combustors (e.g., XONON™) • Post-combustion controls− Selective non-catalytic reduction (SNCR)− Non-selective catalytic reduction (NSCR)− SCONOX TMThe technical feasibility of available NOX control technologies is presented below.

• The facility also includes a combustion turbine, an emergency generator, primary and secondary coal crushers, coal and wood handling systems, and various insignificant and exempt activities.• Utility boilers SR4 and SR6 are equipped with the following air pollution control equipment:o Electrostatic precipitators to control the emissions of particulate matter;o Selective non-catalytic reduction (SNCR) systems to control nitrogen oxide (NOx) emissions.

• Selective noncatalytic reduction (SNCR) add-on technologyhas been used to control NO X emissions from municipal waste combustors (MWC’s) by reducing NO X to N2 without the use of catalysts.

• Selective non-catalytic reduction uses ammonia (NH3) or urea (H2NCONH2) to reduce NOx to nitrogen and water.

More Definitions of Selective noncatalytic reduction

Selective noncatalytic reduction means a noncombustion control technology thatdestroys NOx by injecting a reducing agent (e.g., ammonia, urea, or cyanuric acid)

Selective noncatalytic reduction means emission control technology that involves the injection of a chemical reagent at high flue gas temperatures to selectively reduce NOx emissions to nitrogen and water.

Selective noncatalytic reduction or “SNCR” shall mean an air pollution control device consisting of a reactant injection system using ammonia or urea to selectively reduce NOx to nitrogen and water and may include an enhanced reactant such as hydrogen.