[Thermodynamic of trace element mobilisation during coal combustion].
The thermodynamic equilibrium distributions of the trace elements nickel, chromium, mercury, arsenic, selenium and antimony between the condensed and gaseous phases were examined. Predictions were made using a comprehensive model of the various oxide and sulphide melt models, matte, salt and solid solution models. Three regimes for coal combustion were defined. The condensation sequence from the equilibrium gas phase at 1300 K was predicted on cooling by 10 K steps. The calculated results agree with published experimental results. The comprehensive model enhances the value of the predictions.
Meng
Yun
Y
Chemistry Department of Normal College, Qingdao University, Qingdao 266071, China. mengyun71@hotmail.com
Zhang
Jun-ying
JY
Zhong
Qin
Q
D002857:Chromium / Q000032:analysis; D003031:Coal / Q000032:analysis*; D003198:Computer Simulation; D006358:Hot Temperature; D008628:Mercury / Q000032:analysis; D008962:Models, Theoretical; D009532:Nickel / Q000032:analysis; D013816:Thermodynamics; D014131:Trace Elements / Q000032:analysis*
D003031:Coal; D014131:Trace Elements; D002857:Chromium; D009532:Nickel; D008628:Mercury