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Keywords:
waste incinerator /
primary air /
combustion /
numerical simulation
Abstract: The waste combustion in the waste bed and the impacts of the waste burning efficiency are complex. In order to solve this problem, the method of numerical simulation has been adopted to simulate waste combustion, and calculate the mass loss rate, moisture evaporation, volatile release, char burning rate. Used the total flow rate of primary air between 50～1 000 Nm3/min to calculate the mass loss, excess air coefficient of waste bed, components of the gas. Calculated results show that the burning efficiency is higher when the total flow rate of primary air is at 517.47～632.09 Nm3/min . The average surface temperature of waste bed is markedly improved when the primary air flow rate is 50～75 Nm3/min at the both ends of the grates. This can improve the burning efficiency and decrease the total flow rate of primary air to economize energy resources. So there are some reference values for the further optimization of the waste incinerator and improving the burning efficiency.
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