selective catalytic reduction working
Selective catalytic reduction is an advanced emission control technology, which is aimed at deoxidizing nitrogen pollutants from diesel engines. SCR involves the injection of an liquid reductant, typically urea, into the exhaust stream before it reaches the SCR catalyst. This triggers a chemical reaction that turns NOx into nitrogen and water free from harm to any living thing on Earth. The system includes numerous technological elements such as modules for accurate reductant dosing, an SCR catalyst coated with precious metals which facilitate reaction, as well and a control system to make sure the process is effective. SCR is widely used in such fields as automotive, marine and power generation, thus effectively reducing NOx emissions and meeting environmental regulations.