Abstract

The agglomeration that occurs in a fluidized bed incineration system results in the unexpected shutdown of the system and causes secondary pollutants such as heavy metals to be generated. Addition of Al- and Ca-based additives is an efficient method to control the particle agglomeration. However, emission behavior of heavy metals in incineration processes could be influenced by the addition of agglomeration inhibitors due to both chemical reaction with metals and the fluidization behavior being changed. Accordingly, the aim of this study is to show the emission characteristics of heavy metals (Pb, Cr, and Cd) under various waste compositions (Cl and S) and the addition of agglomeration inhibitors (Al and Ca) during the defluidization process. A thermodynamic equilibrium simulation was used to predict heavy metal formation and to compare the experimental results. The results showed that the emission concentration of heavy metals increased as a result of the reduction of combustion efficiency caused by Al a...

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