| 초록 |
In recent years, As interest in environmental problem has increased, Various regulations have been strengthened. Oxy-fuel combustion is considered as one of promising technologies to reduce the emissions of greenhouse gas. In this study, the direct desulfurization reaction of 4 different kinds of limestones(CaCO3:72-95wt%) was carried out under Oxy-CFB combustion conditions(CO2 concentration:60-95%, Temperature:600-1000℃). To investigate the effect of type of limestone, reaction temperature and CO2 ratio on the desulfurization reaction, Sulfated samples prepared in a thermogravimetric analyzer were analyzed by Scanning Electron Microscope(SEM). Also, the gas-solid reaction model(SCM,VRM,MVRM,RP) was applied to derive the reaction rate equation for direct desulfurization of limestone. |
