INVESTIGATION OF SO_2, HCl AND NO_x CONTROL FROM WASTE INCINERATORS USING A NOVEL ADDITIVE IN A PILOT SCALE REACTOR

摘要

A pilot scale experimental investigation of the use of a novel additive, calcium magnesium acetate, for the simultaneous control of SO_2, HCl and NOx has been carried out. The pilot scale reactor simulated the furnace and flue gas conditions of a typical large scale waste incinerator and was a vertical 4m high reactor operated at 80kW. The calcium magnesium acetate was added as a wet spray to the reactor at temperatures above 750℃. The influence of the calcium magnesium acetate dose rate was investigated on the simultaneous removal of SO_2, HCl and NOx. Maximum reductions were achieved at a Ca/S ratio (or Ca/Cl ratio) of 2.5 and were, 70% for SO_2, 45% for HCl and 18% for NOx for each of the pollutant gases respectively.