THE CATALYTIC INCINERATION OF ETHYL MERCAPTAN OVER A MNO FE2O3 CATALYST/

The catalytic incineration of ethyl mercaptan over a MnO/Fe2O3 fixed b ed catalytic reactor was studied. The effects of operating parameters including inlet temperature, space velocity, C2H5SH concentration and O-2 concentration were characterized. Three kinetic models, such as po wer-rate law, the Mars and Van Krevelen model and the Langmuir-Hinshel wood model were used to analyze the results. A differential reactor de sign was used for best fit of kinetic models in this study. The result s showed that the conversion of ethyl mercaptan was increased with an increase in the inlet temperature and a decrease in the space velocity . The conversion was lower at the higher concentration of ethyl mercap tan. The O-2 concentration had a positive effect on the conversion of ethyl mercaptan. C2H5SH had a poisoning effect on the MnO/Fe2O3 cataly st, especially at a lower temperature. The Langmuir-Hinshelwood model may be feasible to describe the catalytic incineration of C2H5SH. This suggests that the chemical adsorption of O-2 molecule is important in the process of catalytic incineration of C2H5SH.