NOF炉温和钢带清洁对产品的影响.pdf

New generation of furnaces Which choice for modern vertical NOF? Burners choices/edge softening Recent improvements in NOF technology What ? Why ? Benefits ? Lateral burners control Heating homogeneity Strip quality operation Design of the burners (quick Minimize ppm O2 Strip Quality coating combustion, Air/Gas ratio) quality Burners and control Cleaning effect of the NOF Strip Quality coating Level 1 and LTOP® Selective oxidation quality adherence Anti-oxidation device even Avoid oxidation Strip quality, during line stop Avoid strip breakage OPEX Ultra Low Nox Burners when Nox emissions Compl ywith regulations, needed (less than 75ppm@3%O2) Decrease De-Nox OPEX Fiber lining walls (1600°C Flexibility, Transition time, grade) fiber burner blocks Less particles inside Quality, BB life time Assure to be always in the Coating quality, L-TOP Math Model (Choice correct area for cleaning, HSS management of the temp. end of NOF, without oxidation High low rate transition management) Set point during transition management 2 Fuel consumption Main Parameters: The product • A wide range of materials: 3 Oil iron fines • Horizontal or vertical NOF gives good surface preparation for galvanizing : up to 1,000 mg rolling oil iron fines/m2 both sides (with max. 50%