Low-NOx gas calciner FCB Zero-NOx Preca

The FCB Zero-NOx Preca hot spot precalciner increases production and cuts NOx emissions while stabilizing the burning line. It can be used with a wide variety of fuels but was specifically developed for low-volatility fuels such as petroleum coke (petcoke) and anthracite. The unit can also use oils and solvents, plastic, wood and tire chips to achieve a high alternative fuel ratio (AFR). The standard FCB Zero-NOx Preca can achieve exceptionally low emissions of down to 200 mg/Nm³, with air staging and selective non-catalytic reduction (SNCR) injections. Customer benefits: Staged combustion initiates burning at very low air ratios and minimizes emissions NOx reduction to less than 500 mg/Nm³ (0.018 oz/35Nft³) when processing petcoke without SNCR High-speed ignition and a high burn-out without CO emissions Can burn all fuel types Accepts waste tire chips of up to 150 mm (6 in) High operating stability provides a constant raw meal calcination rate at the kiln inlet, and overall high stability of the burning line Key features: Multichannel, low-NOx burner for main and ignition fuel ensures stable combustion Meal distribution is ensured by an efficient splash box and ring chamber Air flow is regulated by a sturdy, air-cooled tertiary air damper Gravity is used to feed alternative solid fuels (ASF), which fall straight into the center of the flame Drop-out box makes the meal fall onto the kiln in case of abnormal fluctuations