Does CO burn in fluidized bed?-A detailed chemical kinetic modeling study

摘要

One important issue in fluidized bed combustion is the effect of the fluidized particles on the homogeneous oxidation of both the volatiles and CO from char combustion. These surfaces are though to quench the radicals and thus lower the rate of combustion significantly. In this work the quenching of the radicals is introduced in a detailed chemical kinetic mechanism to mode the effect of the solids on the oxidation of CO in the particulate and bubble phases. In this way the effect of particle concentration, particle diameter, temperature, air-to-fuel ratio, and water concentration has been studied.