Gray prediction model of exhaust emission characteristics of solid waste in gasification and incineration treatment

Due to the complexity of the production mechanism of NO_x and SO₂ in gasification treatment, it is difficult to predict the concentration of NO_x and SO₂ by kinetic model. Based on gray theory GM(1, 1) and GM(2, 1) model, gray prediction model is studied on the NO_x and SO₂ emission characteristics in gasification and incineration process. The methods of gray model are presented in detail. The parameters of model equations were computed according to the solid waste experimental data in different runs, including temperatures, gasification media and running conditions of combustor. The results show that computed values are in good agreement with experimental ones, and these gray models can preciously predict the processes of synthesis gases emission of gasification.