Experimental studies have been performed to derive the design parameters applicable to real municipal solid waste incinerators using the scale-down model. The model can simulate the combustion conditions, temperature field, chemical species concentrations, residence times and geometrical similarity of real incinerator combustion chambers. The optimum operating conditions of the model municipal solid waste incinerator are decided through the successive tests to be performed. The secondary air injection into incinerator combustion chamber is to supply fresh air for oxidative destruction of toxic pollutants and their intermediate products. Mixing between the fresh air and the burnt gas is important, in that oxygen availability and high temperature are essential for chemical reactions of incomplete combustion products. The mixing characteristics are evaluated in terms of mean temperature distributions, chemical species concentration measurements and temperature fluctuation measurements.
