H2S Scavenger Program for SOx Compliance

This case study details the implementation of a sulfur dioxide (SOx) compliance solution at a refinery in the Great Plains, United States. The document outlines the challenge of managing high hydrogen sulfide (H2S) levels in flare gas, which exceeded 2,000 ppm, and the associated regulatory requirement from the US Environmental Protection Agency (EPA) to maintain SOx emissions below 162 ppm. To address this, the refinery engaged Baker Hughes to develop a cost-effective solution that would avoid the multimillion-dollar investment required for amine units. The Baker Hughes team inspected the flare system and determined that a direct injection approach using SULFIX™ SX9252 H2S scavengers would be effective. The implementation of this program successfully reduced H2S concentrations in the flare line to below 150 ppm over several months, ensuring compliance with EPA regulations. The program continues to be monitored to maintain low H2S levels.