METHOD OF CATALYTIC CLEANING OF WASTE GASES FROM NITRIC OXIDES Russian patent published in 2001 - IPC

FIELD: cleaning industrial gaseous emissions. SUBSTANCE: method is conducted at elevated temperature with the use of ammonia and catalyst containing, mas.%: active component in form of sludge of sewage from thermal power stations formed in flushing boiler units, 45 to 85; binder-clay, 13 to 35; and temporary technological binder, 2-20; catalyst is subjected to roasting at temperature of 530 to 600 C for 4 to 6 h. EFFECT: enhanced efficiency of cleaning waste gases from nitric oxides; increased ultimate compressive strength. 3 cl, 2 tbl, 22 ex