NOx Reduction through Mass Flow Control
As a technique to reduce the level of Nitrogen Oxides (NOx) in boiler or furnace exhaust gases, Selective Catalytic Reduction has been around for years. Selective Catalytic Reduction is a technology which converts Nitrogen Oxides (NOx) with the aid of a catalyst into diatomic Nitrogen and water. A reductant agent is injected into the exhaust stream through a special catalyst. A typical reductant used here is anhydrous ammonia.
A customer of Bronkhorst, who has been selling and servicing boilers and pumps for commercial and industrial applications all over the world, had been using a mass flow controller. Unfortunately this mass flow controller was not reliable and robust enough for the application and thus their customers were suffering from poor ammonia measurement and control.