Modeling of heavy metals behavior based on fly ash from MSWI in a swirling furnace

摘要

Based on the experimental results and existent states of heavy metals in fly ashes and slag, the gas-solid reaction theory during the melting process, heat and mass transfer of particles in fly ashes, chemical dynamics theory such as volatile heavy metals diffuseness, the plentiful experimental datum were analyzed. Theoretical simulated results from the predicted model are basically consistent with experimental data concerning Co, Cu, Ni, Cr, and Mn fixed rates from in swirling furnace. Results indicate that this approach permits to predict the extent of heavy metals vaporization from a glassy matrix, such as As, Cd, Pb, Zn, and Hg, when heavy metals in swirling melting. The model of heavy metals melting reaction and the volatility in particles during fly ashes melting process has been constructed.