Use of detailed kinetic models for multiscale process simulations of sulfur recovery units

The modeling of thermal reaction furnaces of sulfur recovery units is a quite cumbersome problem since it involves different modeling scales such as the kinetic/molecular micro-scale, the reactor design meso-scale, and the hemical process macro-scale. The present paper proposes preliminary results of a multiscale approach to model the thermal furnaces and waste heat boiler based on detailed kinetics and reactor network analysis (RNA). The main kinetic mechanisms are discussed and validated using experimental data; industrial data is used to validate the RNA layout.