selective catalytic reduction nox
Selective Catalytic Reduction (SCR) of NOx technology is an advanced technology for control. designed to cut nitrogen oxide (NOx) emissions from diesel engines. The primary task of SCR is to cut these harmful gases down into harmless nitrogen and water vapor. The technology features the use of a catalyst, typically made from precious metals, which facilitates the chemical reaction without being consumed in the process. SCR systems are equipped with sensors and a urea dosing system that injects a precisely measured amount of urea-based fluid, known as DEF (diesel exhaust fluid), into the exhaust stream.It is at these temperatures ranging between 200-450C that the SCR catalyst is most efficient in promoting destructive chemical reactions to break down one mixture into the next.The uses of SCR are all- inclusive, ranging from heavy goods vehicles and buses to off-highway machines, as well as industrial electric power systems. It makes a great contribution in alleviating our air pollution problems.