Kinetic-based Models for Alumina and Titania Claus Catalysts Based on Experimental Data

Catalytic section of Claus process is significant for increasing the efficiency of sulfur recovery, and decreasing the amount of H 2 S emission to the environment. In this research, experiments at different gas hourly space velocities (GHSVs) and temperatures were carried out in a bench scale plant in the presence of both alumina (Al 2 O 3 ) and titania (TiO 2 ) commercial Claus catalysts. The feed composition and operating conditions were selected within the range of a target industrial scale plant. Thereafter, an isotherm model was constructed for the bench scale reactor, and its kinetic parameters were estimated using the obtained data. Results showed that H 2 S and CS 2 conversions over Al 2 O 3 and TiO 2 Claus catalysts could be predicted with the average absolute deviation (AAD) of 9.86 and 30.03%, and 15.31 and 4.22%, respectively.