Degassing Pit

Before molten sulfur can be allowed to flow to storage , it must have residual H₂S removed.  This is often done by an air sweep of the sulfur pit.  The sweep air, now containing H₂S, is sent to the TGU along with the tail gas from the process.  SulphurPro® contains a unit operation which models the sulfur pit and its efficacy in removing H₂S from the product sulfur.  This allows you to close in ever more tightly on the actual emissions from the SRU in terms of the emission rates of real species.