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Downsizing a Claus Sulfur Recovery Unit

Presented By

Charles Kimantas - Bechtel

Martin Taylor - Bechtel


The drop in crude oil prices has lowered the economic advantage of processing high sulfur crudes. Refineries are, therefore, processing lower sulfur crudes. This has resulted in a reduction in the amount of hydrogen sulfide (H2S) available for processing into sulfur. In some cases this will require modification of sulfur recovery units to handle smaller quantities of H2S. This paper discusses the modifications that can be made to process quantities of H2S that are significantly less than the original design. “Significantly less” may mean 50%, 30% or even 10% of design, depending on the unit configuration.

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