A Detailed Study of the role of Halogens in the Inhibition of Nitrogen Oxide Formation in Fluidized Bed Incinerators

摘要

A laboratory-scale, electrically heated bed of fluidized sand was used to study the effect of chlorine on NO_x and N_2O emissions during incineration processes. Pyridine (C_5H_5N) was burnt, as a model compound, at temperatures between 700 and 900 deg C in mixtures of O_2 and N_2 to produce NO_x and N_2O. The concentration of pyridine in the fluidizing air was between 500 and 2000 ppm. The concentrations of NO_x, N_2O, CO and CO_2 were measured continuously in the freeboard Chlorine was introduced to the bed as HCl at concentrations up to 6000 ppm.