Refinery flare gas H2S removal


Courtesy of Macrotek Inc.

A major Gulf Coast refinery was searching for a solution to reduce flare gas SO2 that was resulting from very high H2S concentrations during periodic venting events. Original considerations were limited to very costly upstream equipment changes or a sulphur recovery unit, all costing tens of millions of dollars.

Macrotek was contracted to design and build a cost-effective H2S scrubbing unit to reduce the H2S down to EPA acceptable limits for the SO2 resulting from the flare combustion. Macrotek designed and supplied a unique two-stage system that has been operating successfully for a number of years. The by-product is sulfite, which is sold as a reusable material.

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