UREA AQUEOUS SOLUTION SPRAYING NOZZLE FOR UREA METHOD DENITRIFICATION AND UREA METHOD DENITRIFICATION DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To find out a material for spraying nozzle for a urea method denitrification urea aqueous soln. capable of withstanding the use for a long period. ;SOLUTION: This urea aqueous soln. spraying nozzle for urea method denitrification comprises 90 wt.% Cr or 22-40 wt.% Cr, 0.1-25 wt.% Ni and the balance consisting substantially of Fe. The urea method denitrification device uses this nozzle installed in a combustion furnace in a 800-1200°C temperature range.;COPYRIGHT: (C)1999,JPO