Selective Catalytic Reduction definition

Selective Catalytic Reduction means a noncombustion control technology that destroys NOx by injecting a reducing agent (e.g., ammonia) into the flue gas that, in the presence of a catalyst (e.g., vana- dium, titanium, or zeolite), converts NOx into molecular nitrogen and water.

Selective Catalytic Reduction or “SCR” shall mean an air pollution control device consisting of ammonia injection and a catalyst bed to selectively catalyze the reduction of NOx with ammonia to nitrogen and water.

Selective Catalytic Reduction and “SCR” shall mean a pollution control device that reacts ammonia (NH3) or urea with NOX to form nitrogen (N2) and water (H2O) using a catalyst to speed the reaction. SCRs include traditional add-on SCRs and catalyst-impregnated ceramic filters.

Examples of Selective Catalytic Reduction in a sentence

• Tennessee Valley Authority Coal-Fired Units that Continue to be Operated and Other Actions Taken or Planned Fossil Plant Units Affected* Selective catalytic reduction systems (“SCR”)** Unit 10 at Shawnee was idled in 2010 and retired.

• Tennessee Valley Authority Coal-Fired Units Retired Under Environmental Agreements Fossil Plant Units Affected* Selective catalytic reduction systems (“SCR”)Source: Tennessee Valley Authority 2014, 2017b, and 2018a.

• Selective catalytic reduction (SCR) units shall be operated if catalyst bed temperature is greater than 400°F, or as specified by manufacturer.

• Tennessee Valley Authority Coal-Fired Units to be Retired Under Environmental Agreements Fossil Plant * Selective catalytic reduction systems (“SCR”)Source: Tennessee Valley Authority 2014a; and Tennessee Valley Authority 2015a.

• Tennessee Valley Authority Coal-Fired Units Retired for Business Reasons Fossil Plant Units Affected* Selective catalytic reduction systems (“SCR”)Source: Tennessee Valley Authority 2014a, 2017b, 2018a, 2019b, and 2020b; and Associated Press 2018.

More Definitions of Selective Catalytic Reduction

Selective Catalytic Reduction or “SCR” means a pollution control device that employs selective catalytic reduction technology for the reduction of NOx emissions.

Selective Catalytic Reduction or “SCR” means an advanced active emissions control technology system that injects a liquid-reductant agent through a special catalyst into the exhaust stream of a diesel engine.

Selective Catalytic Reduction or “SCR” means an emission control system that injects diesel exhaust fluid into the exhaust stream where it reacts with a catalyst to reduce NOx emissions.

Selective Catalytic Reduction or "SCR" means an air pollution control device for reducing NOx emissions in which ammonia ("NH3") is added to the flue gas and then passed through layers of a catalyst material. The ammonia and NOx in the flue gas stream react on the surface of the catalyst, forming nitrogen ("N2") and water vapor. (“U.S. v Consumers Energy Company, Civil Action 14-13580, E.D. Mich., 2014” paragraph 61)

Selective Catalytic Reduction and “SCR” shall mean a pollution control device that employs selective catalytic reduction technology to react ammonia (NH3) with NOx to form nitrogen (N2) and water (H20) using a catalyst to speed the reaction;

Selective Catalytic Reduction means a noncombustion control technology thatdestroys NOx by injecting a reducing agent (e.g., ammonia) into the flue gas that, in the presence of a catalyst (e.g., vanadium, titanium, or zeolite), converts NOx into molecular nitrogen and water.

Selective Catalytic Reduction is an Element of Design that reduces NOx emissions by chemically converting exhaust gas that contains NOx into nitrogen and water through the injection of diesel exhaust fluid. Sensors in the SCR system communicate with the OBD to ensure that SCR is properly controlling NOx emissions.