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Write short note on: Control of NO x emission.
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written 6.1 years ago by | • modified 5.1 years ago |
Many modern technologies and methods have been developed to reduce amount of NO x emissions since these gases readily react with common organic chemicals to form variety of toxic products like nitric acid vapors and nitro arenes. Some of the control techniques are:
Exhaust Gas Recirculation(EGR) is being widely used in many vehicles.
Selective Catalytic Reduction (SCR) and Selective Non – Catalytic Reduction (SNCR) are now being used in diesel trucks and cars.
Water injection technology, in which water is introduced into the combustion chamber.
Catalytic Converters
Lean $NO_{x}$ traps (LNT) are $NO_{x}$ adsorber catalysts
Three way catalysts (TWC) which are basically palladium-rhodium or tri-metal formulations to reduce $NO_{x}$ to nitrogen.
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