Low-NOx gas calciner FCB Zero-NOx Preca

The FCB Zero-NOx Preca can be used with a wide variety of fuels (oil, coal, natural gas, petcoke, anthracite) and a high proportion of AFR (oils and solvents, plastic, wood or tyre chips). Already reaching less than 500 mg/Nm³ NOx with petcoke, the FCB Zero-NOx Preca provides evolutions to go down to 200 mg/Nm³, with air staging and SNCR injections. Customer benefits The staged combustion which initiates burning at very low air ratios, minimizes emissions. The FCB Zero-NOx Preca can burn all types of fuels. Waste tyres chips up to 250 mm large have been burnt. Up to 60% coarse ASF can be accepted. NOx production less than 500 mg/Nm³ with petcoke. Ignition is very quick and a high burn-out is obtained without CO emission. Technical advantages The Fives hot-spot precalciner is equipped with a multichannel, Low-NOx burner. The meal distribution is ensured by an efficient splash box and ring chamber. The air flow is regulated with a sturdy, air-cooled tertiary air damper. Alternative solid fuels feed the FCB Zero-NOx Preca by gravity and fall right into the center of the flame.