The Linde Clinsulf® process for sulfur recovery: Modelling and simulation

Abstract

Extending the adsorption simulation model ADLIN® to chemical reactions with catalysts we have designed a favourable modification to the Linde Clinsulf® process which converts H₂S and COS to sulfur. Using a detailed precooling treatment before switching the hot and cold reactors we were able to reduce the typical lack in conversion to merely 0.5% which guarantees an overall sulfur recovery above 99.7% during the entire cycle time. The model calculations reveal the complex interaction of chemical reaction, adsorption, condensation and heat transfer for designing actual plants.