What is the primary function of SCOT Units in a refinery?

The primary function of SCOT (Spent Caustic Oxidation Technology) units in a refinery is to oxidize acid gas feed, which includes components like hydrogen sulfide (H2S). These units are critical in the processes that deal with sulfur recovery and ensure that the acid gases produced during refining operations are safely and effectively treated. By converting these gases, SCOT units help prevent the release of harmful emissions and support the overall environmental compliance of the refinery.

In contrast, producing steam and power is typically the role of a cogeneration unit or boiler system, while treating wastewater is associated with a refinery’s wastewater treatment facilities. The conversion of SRU feed into liquid sulfur is specifically the domain of Sulfur Recovery Units (SRU) rather than SCOT units. Hence, the focus on acid gas oxidation directly identifies the essential function of SCOT units within refinery operations.