Multizonal thermodynamic equilibrium calculation is one of the methods used in estimating or explaining the fate of elements such as heavy metals during waste incinerations and probably only one method that can estimate the fate of trace elements, but the ability of the calculation as a fate-estimation tool was not fully examined. This study examines the performance of multizonal thermodynamic equilibrium calculation applied to waste incineration by comparing the calculated results with the results from the incineration test and literature information. High temperature behaviors of the heavy metals were also reviewed to correctly understand their gas phase speciation in the incinerator, and the thermodynamic data of gaseous Cd species were modified to better reproduce the high temperature vaporization behavior. The calculation represented the high volatility of Hg, Cd, Pb, and low volatility of Cr in the incineration, whereas the measured high volatility of Zn and As could not be obtained by the calculation. The calculation succeeded in reproducing the possible gas phase chemical speciation of heavy metals in the incinerator expected from the review on the high temperature properties, whereas the calculated fly ash speciation does not match with the measured speciation. Possible reasons for these inconsistencies were considered.

多区域热力学平衡计算是用于估计或解释废物焚烧过程中重金属等元素的归宿的方法之一，并且可能只是可以估算痕量元素归宿的一种方法，但该计算能力却可以作为归宿估算该工具尚未完全检查。本研究通过将计算结果与焚化试验和文献信息的结果进行比较，检验了应用于废物焚烧的多区域热力学平衡计算的性能。还审查了重金属的高温行为，以正确理解它们在焚化炉中的气相形态，并修改了气态Cd物种的热力学数据，以更好地再现高温汽化行为。计算结果表明，焚烧过程中Hg，Cd，Pb的挥发性高，而Cr的挥发性低，而通过计算无法获得测得的Zn和As的高挥发性。该计算成功地再现了焚烧炉中重金属可能具有的气相化学形态，这是对高温特性的回顾所期望的，而计算出的粉煤灰形态却与测得的形态不符。考虑了这些不一致的可能原因。该计算成功地再现了焚烧炉中重金属可能具有的气相化学形态，这是对高温特性的回顾所期望的，而计算出的粉煤灰形态却与测得的形态不符。考虑了这些不一致的可能原因。该计算成功地再现了焚烧炉中重金属可能具有的气相化学形态，这是对高温特性的回顾所期望的，而计算出的粉煤灰形态却与测得的形态不符。考虑了这些不一致的可能原因。