Discussion on the exhaust emission characteristics of Super Opticlaus.
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This post was last edited by liaifeng on 2018-7-27 at 16:44. As the title suggests, for a sulfur recovery unit that uses the ultra-optimal Claus process, what is the level of sulfur dioxide emissions in the exhaust gas? What is the biggest challenge in operating the device? Experts with experience in management operations, please share your insights.
It is generally between 200 and 300; it is high at the start of operation, which is a drawback of this process. Without hydrogenation, the desulfurized material is sent directly back to the Claus furnace, which saves energy and enables ultra-low emissions
Expressing doubt: Is it that low?
The highest sulfur recovery rate achievable with the ultra-optimal Claus process is 99.5%. If the gas released from the liquid sulfur tank is not recycled in the Claus process but is instead burned together with the Claus process exhaust gases, the SO2 concentration in those exhaust gases will be around 2000–3000 mg/Nm3; it is very difficult to achieve a concentration in the range of a few hundred mg/Nm3.