Dear All,
The aim of a Flare Gas Recovery Unit of a petrochemical complex is converting of H2S (17.5 %wt) in flue gas to Ammonium Sulfate (commercial-grade). The process includes three stages:
1- Sweetening Unit
2- H2S Oxidation Unit (Converting of H2S to SO2)
3- Producing of ammonium sulfate from SO2 by ammonia scrubbing.
The first and third technology is clear for me. However, we have no idea about the second stage.
What is the conventional method for converting of H2S to SO2 in this regard?
I know the Claus process as be used in conventional SRU unit, but i am not sure about the applicability of this in this case.
Is there any industrial method for direct converting of H2S to ammonium sulfate without oxidation (SO2) ?
Thanks.