中国化学工程学报(英文版)
中國化學工程學報(英文版)
중국화학공정학보(영문판)
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2007年
2期
268-275
,共8页
谭中欣%李海滨%王小亮%蒋旭光%严建华
譚中訢%李海濱%王小亮%蔣旭光%嚴建華
담중흔%리해빈%왕소량%장욱광%엄건화
hazardous waste%incineration%thermodynamic equilibrium model%heavy metals%species transformation%prediction
The release of heavy metals from the combustion of hazardous wastes is an environmental issue of increasing concern.The species transformation characteristics of toxic heavy metals and their distribution are considered to be a complex problem of mechanism.The behavior of hazardous dyestuff residue is investigated in a tubular furnace under the general condition of hazardous waste pyrolysis and gasfication.Data interpretation has been aided by parallel theoretical study based on a thermodynamic equilibrium model based on the principle of Gibbs free energy minimization.The results show that Ni,Zn,Mn,and Cr are more enriched in dyestuff residue incineration than other heavy metals (Hg,As,and Se) subjected to volatilization.The thermodynamic model calculation is used for explaining the experiment data at 800℃ and analyzing species transformation of heavy metals.These results of species transformation are used to predict the distribution and emission characteristics of trace elements.Although most trace element predictions are validated by the measurements,cautions are in order due to the complexity of incineration systems.